Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pul removal of obsolete architecture ports from Arnd Bergmann:
 "This removes the entire architecture code for blackfin, cris, frv,
  m32r, metag, mn10300, score, and tile, including the associated device
  drivers.

  I have been working with the (former) maintainers for each one to
  ensure that my interpretation was right and the code is definitely
  unused in mainline kernels. Many had fond memories of working on the
  respective ports to start with and getting them included in upstream,
  but also saw no point in keeping the port alive without any users.

  In the end, it seems that while the eight architectures are extremely
  different, they all suffered the same fate: There was one company in
  charge of an SoC line, a CPU microarchitecture and a software
  ecosystem, which was more costly than licensing newer off-the-shelf
  CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
  seems that all the SoC product lines are still around, but have not
  used the custom CPU architectures for several years at this point. In
  contrast, CPU instruction sets that remain popular and have actively
  maintained kernel ports tend to all be used across multiple licensees.

  [ See the new nds32 port merged in the previous commit for the next
    generation of "one company in charge of an SoC line, a CPU
    microarchitecture and a software ecosystem"   - Linus ]

  The removal came out of a discussion that is now documented at
  https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
  marking any ports as deprecated but remove them all at once after I
  made sure that they are all unused. Some architectures (notably tile,
  mn10300, and blackfin) are still being shipped in products with old
  kernels, but those products will never be updated to newer kernel
  releases.

  After this series, we still have a few architectures without mainline
  gcc support:

   - unicore32 and hexagon both have very outdated gcc releases, but the
     maintainers promised to work on providing something newer. At least
     in case of hexagon, this will only be llvm, not gcc.

   - openrisc, risc-v and nds32 are still in the process of finishing
     their support or getting it added to mainline gcc in the first
     place. They all have patched gcc-7.3 ports that work to some
     degree, but complete upstream support won't happen before gcc-8.1.
     Csky posted their first kernel patch set last week, their situation
     will be similar

  [ Palmer Dabbelt points out that RISC-V support is in mainline gcc
    since gcc-7, although gcc-7.3.0 is the recommended minimum  - Linus ]"

This really says it all:

 2498 files changed, 95 insertions(+), 467668 deletions(-)

* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
  MAINTAINERS: UNICORE32: Change email account
  staging: iio: remove iio-trig-bfin-timer driver
  tty: hvc: remove tile driver
  tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
  serial: remove tile uart driver
  serial: remove m32r_sio driver
  serial: remove blackfin drivers
  serial: remove cris/etrax uart drivers
  usb: Remove Blackfin references in USB support
  usb: isp1362: remove blackfin arch glue
  usb: musb: remove blackfin port
  usb: host: remove tilegx platform glue
  pwm: remove pwm-bfin driver
  i2c: remove bfin-twi driver
  spi: remove blackfin related host drivers
  watchdog: remove bfin_wdt driver
  can: remove bfin_can driver
  mmc: remove bfin_sdh driver
  input: misc: remove blackfin rotary driver
  input: keyboard: remove bf54x driver
  ...

19 files changed, 0 insertions, 11368 deletions

diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index b811442c5ce6..e5041c605fd0 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -151,19 +151,6 @@ config LEGACY_PTY_COUNT
 	  When not in use, each legacy PTY occupies 12 bytes on 32-bit
 	  architectures and 24 bytes on 64-bit architectures.
 
-config BFIN_JTAG_COMM
-	tristate "Blackfin JTAG Communication"
-	depends on BLACKFIN
-	help
-	  Add support for emulating a TTY device over the Blackfin JTAG.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called bfin_jtag_comm.
-
-config BFIN_JTAG_COMM_CONSOLE
-	bool "Console on Blackfin JTAG"
-	depends on BFIN_JTAG_COMM=y
-
 config SERIAL_NONSTANDARD
 	bool "Non-standard serial port support"
 	depends on HAS_IOMEM
@@ -402,19 +389,6 @@ config GOLDFISH_TTY_EARLY_CONSOLE
 	default y if GOLDFISH_TTY=y
 	select SERIAL_EARLYCON
 
-config DA_TTY
-	bool "DA TTY"
-	depends on METAG_DA
-	select SERIAL_NONSTANDARD
-	help
-	  This enables a TTY on a Dash channel.
-
-config DA_CONSOLE
-	bool "DA Console"
-	depends on DA_TTY
-	help
-	  This enables a console on a Dash channel.
-
 config MIPS_EJTAG_FDC_TTY
 	bool "MIPS EJTAG Fast Debug Channel TTY"
 	depends on MIPS_CDMM
diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index 8ce3a8661b31..c72cafdf32b4 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -20,7 +20,6 @@ obj-$(CONFIG_SERIAL_DEV_BUS)	+= serdev/
 
 # tty drivers
 obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o
-obj-$(CONFIG_BFIN_JTAG_COMM)	+= bfin_jtag_comm.o
 obj-$(CONFIG_CYCLADES)		+= cyclades.o
 obj-$(CONFIG_ISI)		+= isicom.o
 obj-$(CONFIG_MOXA_INTELLIO)	+= moxa.o
@@ -32,7 +31,6 @@ obj-$(CONFIG_SYNCLINKMP)	+= synclinkmp.o
 obj-$(CONFIG_SYNCLINK)		+= synclink.o
 obj-$(CONFIG_PPC_EPAPR_HV_BYTECHAN) += ehv_bytechan.o
 obj-$(CONFIG_GOLDFISH_TTY)	+= goldfish.o
-obj-$(CONFIG_DA_TTY)		+= metag_da.o
 obj-$(CONFIG_MIPS_EJTAG_FDC_TTY) += mips_ejtag_fdc.o
 obj-$(CONFIG_VCC)		+= vcc.o
 
diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c
deleted file mode 100644
index c369bf27a67b..000000000000
--- a/drivers/tty/bfin_jtag_comm.c
+++ /dev/null
@@ -1,353 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * TTY over Blackfin JTAG Communication
- *
- * Copyright 2008-2009 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-#define DRV_NAME "bfin-jtag-comm"
-#define DEV_NAME "ttyBFJC"
-#define pr_fmt(fmt) DRV_NAME ": " fmt
-
-#include <linux/circ_buf.h>
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/kernel.h>
-#include <linux/kthread.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/atomic.h>
-
-#define pr_init(fmt, args...) ({ static const __initconst char __fmt[] = fmt; printk(__fmt, ## args); })
-
-/* See the Debug/Emulation chapter in the HRM */
-#define EMUDOF   0x00000001	/* EMUDAT_OUT full & valid */
-#define EMUDIF   0x00000002	/* EMUDAT_IN full & valid */
-#define EMUDOOVF 0x00000004	/* EMUDAT_OUT overflow */
-#define EMUDIOVF 0x00000008	/* EMUDAT_IN overflow */
-
-static inline uint32_t bfin_write_emudat(uint32_t emudat)
-{
-	__asm__ __volatile__("emudat = %0;" : : "d"(emudat));
-	return emudat;
-}
-
-static inline uint32_t bfin_read_emudat(void)
-{
-	uint32_t emudat;
-	__asm__ __volatile__("%0 = emudat;" : "=d"(emudat));
-	return emudat;
-}
-
-static inline uint32_t bfin_write_emudat_chars(char a, char b, char c, char d)
-{
-	return bfin_write_emudat((a << 0) | (b << 8) | (c << 16) | (d << 24));
-}
-
-#define CIRC_SIZE 2048	/* see comment in tty_io.c:do_tty_write() */
-#define CIRC_MASK (CIRC_SIZE - 1)
-#define circ_empty(circ)     ((circ)->head == (circ)->tail)
-#define circ_free(circ)      CIRC_SPACE((circ)->head, (circ)->tail, CIRC_SIZE)
-#define circ_cnt(circ)       CIRC_CNT((circ)->head, (circ)->tail, CIRC_SIZE)
-#define circ_byte(circ, idx) ((circ)->buf[(idx) & CIRC_MASK])
-
-static struct tty_driver *bfin_jc_driver;
-static struct task_struct *bfin_jc_kthread;
-static struct tty_port port;
-static volatile struct circ_buf bfin_jc_write_buf;
-
-static int
-bfin_jc_emudat_manager(void *arg)
-{
-	uint32_t inbound_len = 0, outbound_len = 0;
-
-	while (!kthread_should_stop()) {
-		struct tty_struct *tty = tty_port_tty_get(&port);
-		/* no one left to give data to, so sleep */
-		if (tty == NULL && circ_empty(&bfin_jc_write_buf)) {
-			pr_debug("waiting for readers\n");
-			__set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule();
-			continue;
-		}
-
-		/* no data available, so just chill */
-		if (!(bfin_read_DBGSTAT() & EMUDIF) && circ_empty(&bfin_jc_write_buf)) {
-			pr_debug("waiting for data (in_len = %i) (circ: %i %i)\n",
-				inbound_len, bfin_jc_write_buf.tail, bfin_jc_write_buf.head);
-			tty_kref_put(tty);
-			if (inbound_len)
-				schedule();
-			else
-				schedule_timeout_interruptible(HZ);
-			continue;
-		}
-
-		/* if incoming data is ready, eat it */
-		if (bfin_read_DBGSTAT() & EMUDIF) {
-			uint32_t emudat = bfin_read_emudat();
-			if (inbound_len == 0) {
-				pr_debug("incoming length: 0x%08x\n", emudat);
-				inbound_len = emudat;
-			} else {
-				size_t num_chars = (4 <= inbound_len ? 4 : inbound_len);
-				pr_debug("  incoming data: 0x%08x (pushing %zu)\n", emudat, num_chars);
-				inbound_len -= num_chars;
-				tty_insert_flip_string(&port, (unsigned char *)&emudat, num_chars);
-				tty_flip_buffer_push(&port);
-			}
-		}
-
-		/* if outgoing data is ready, post it */
-		if (!(bfin_read_DBGSTAT() & EMUDOF) && !circ_empty(&bfin_jc_write_buf)) {
-			if (outbound_len == 0) {
-				outbound_len = circ_cnt(&bfin_jc_write_buf);
-				bfin_write_emudat(outbound_len);
-				pr_debug("outgoing length: 0x%08x\n", outbound_len);
-			} else {
-				int tail = bfin_jc_write_buf.tail;
-				size_t ate = (4 <= outbound_len ? 4 : outbound_len);
-				uint32_t emudat =
-				bfin_write_emudat_chars(
-					circ_byte(&bfin_jc_write_buf, tail + 0),
-					circ_byte(&bfin_jc_write_buf, tail + 1),
-					circ_byte(&bfin_jc_write_buf, tail + 2),
-					circ_byte(&bfin_jc_write_buf, tail + 3)
-				);
-				bfin_jc_write_buf.tail += ate;
-				outbound_len -= ate;
-				if (tty)
-					tty_wakeup(tty);
-				pr_debug("  outgoing data: 0x%08x (pushing %zu)\n", emudat, ate);
-			}
-		}
-		tty_kref_put(tty);
-	}
-
-	__set_current_state(TASK_RUNNING);
-	return 0;
-}
-
-static int
-bfin_jc_open(struct tty_struct *tty, struct file *filp)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&port.lock, flags);
-	port.count++;
-	spin_unlock_irqrestore(&port.lock, flags);
-	tty_port_tty_set(&port, tty);
-	wake_up_process(bfin_jc_kthread);
-	return 0;
-}
-
-static void
-bfin_jc_close(struct tty_struct *tty, struct file *filp)
-{
-	unsigned long flags;
-	bool last;
-
-	spin_lock_irqsave(&port.lock, flags);
-	last = --port.count == 0;
-	spin_unlock_irqrestore(&port.lock, flags);
-	if (last)
-		tty_port_tty_set(&port, NULL);
-	wake_up_process(bfin_jc_kthread);
-}
-
-/* XXX: we dont handle the put_char() case where we must handle count = 1 */
-static int
-bfin_jc_circ_write(const unsigned char *buf, int count)
-{
-	int i;
-	count = min(count, circ_free(&bfin_jc_write_buf));
-	pr_debug("going to write chunk of %i bytes\n", count);
-	for (i = 0; i < count; ++i)
-		circ_byte(&bfin_jc_write_buf, bfin_jc_write_buf.head + i) = buf[i];
-	bfin_jc_write_buf.head += i;
-	return i;
-}
-
-#ifndef CONFIG_BFIN_JTAG_COMM_CONSOLE
-# define console_lock()
-# define console_unlock()
-#endif
-static int
-bfin_jc_write(struct tty_struct *tty, const unsigned char *buf, int count)
-{
-	int i;
-	console_lock();
-	i = bfin_jc_circ_write(buf, count);
-	console_unlock();
-	wake_up_process(bfin_jc_kthread);
-	return i;
-}
-
-static void
-bfin_jc_flush_chars(struct tty_struct *tty)
-{
-	wake_up_process(bfin_jc_kthread);
-}
-
-static int
-bfin_jc_write_room(struct tty_struct *tty)
-{
-	return circ_free(&bfin_jc_write_buf);
-}
-
-static int
-bfin_jc_chars_in_buffer(struct tty_struct *tty)
-{
-	return circ_cnt(&bfin_jc_write_buf);
-}
-
-static const struct tty_operations bfin_jc_ops = {
-	.open            = bfin_jc_open,
-	.close           = bfin_jc_close,
-	.write           = bfin_jc_write,
-	/*.put_char        = bfin_jc_put_char,*/
-	.flush_chars     = bfin_jc_flush_chars,
-	.write_room      = bfin_jc_write_room,
-	.chars_in_buffer = bfin_jc_chars_in_buffer,
-};
-
-static int __init bfin_jc_init(void)
-{
-	int ret;
-
-	bfin_jc_kthread = kthread_create(bfin_jc_emudat_manager, NULL, DRV_NAME);
-	if (IS_ERR(bfin_jc_kthread))
-		return PTR_ERR(bfin_jc_kthread);
-
-	ret = -ENOMEM;
-
-	bfin_jc_write_buf.head = bfin_jc_write_buf.tail = 0;
-	bfin_jc_write_buf.buf = kmalloc(CIRC_SIZE, GFP_KERNEL);
-	if (!bfin_jc_write_buf.buf)
-		goto err_buf;
-
-	bfin_jc_driver = alloc_tty_driver(1);
-	if (!bfin_jc_driver)
-		goto err_driver;
-
-	tty_port_init(&port);
-
-	bfin_jc_driver->driver_name  = DRV_NAME;
-	bfin_jc_driver->name         = DEV_NAME;
-	bfin_jc_driver->type         = TTY_DRIVER_TYPE_SERIAL;
-	bfin_jc_driver->subtype      = SERIAL_TYPE_NORMAL;
-	bfin_jc_driver->init_termios = tty_std_termios;
-	tty_set_operations(bfin_jc_driver, &bfin_jc_ops);
-	tty_port_link_device(&port, bfin_jc_driver, 0);
-
-	ret = tty_register_driver(bfin_jc_driver);
-	if (ret)
-		goto err;
-
-	pr_init(KERN_INFO DRV_NAME ": initialized\n");
-
-	return 0;
-
- err:
-	tty_port_destroy(&port);
-	put_tty_driver(bfin_jc_driver);
- err_driver:
-	kfree(bfin_jc_write_buf.buf);
- err_buf:
-	kthread_stop(bfin_jc_kthread);
-	return ret;
-}
-module_init(bfin_jc_init);
-
-static void __exit bfin_jc_exit(void)
-{
-	kthread_stop(bfin_jc_kthread);
-	kfree(bfin_jc_write_buf.buf);
-	tty_unregister_driver(bfin_jc_driver);
-	put_tty_driver(bfin_jc_driver);
-	tty_port_destroy(&port);
-}
-module_exit(bfin_jc_exit);
-
-#if defined(CONFIG_BFIN_JTAG_COMM_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
-static void
-bfin_jc_straight_buffer_write(const char *buf, unsigned count)
-{
-	unsigned ate = 0;
-	while (bfin_read_DBGSTAT() & EMUDOF)
-		continue;
-	bfin_write_emudat(count);
-	while (ate < count) {
-		while (bfin_read_DBGSTAT() & EMUDOF)
-			continue;
-		bfin_write_emudat_chars(buf[ate], buf[ate+1], buf[ate+2], buf[ate+3]);
-		ate += 4;
-	}
-}
-#endif
-
-#ifdef CONFIG_BFIN_JTAG_COMM_CONSOLE
-static void
-bfin_jc_console_write(struct console *co, const char *buf, unsigned count)
-{
-	if (bfin_jc_kthread == NULL)
-		bfin_jc_straight_buffer_write(buf, count);
-	else
-		bfin_jc_circ_write(buf, count);
-}
-
-static struct tty_driver *
-bfin_jc_console_device(struct console *co, int *index)
-{
-	*index = co->index;
-	return bfin_jc_driver;
-}
-
-static struct console bfin_jc_console = {
-	.name    = DEV_NAME,
-	.write   = bfin_jc_console_write,
-	.device  = bfin_jc_console_device,
-	.flags   = CON_ANYTIME | CON_PRINTBUFFER,
-	.index   = -1,
-};
-
-static int __init bfin_jc_console_init(void)
-{
-	register_console(&bfin_jc_console);
-	return 0;
-}
-console_initcall(bfin_jc_console_init);
-#endif
-
-#ifdef CONFIG_EARLY_PRINTK
-static void __init
-bfin_jc_early_write(struct console *co, const char *buf, unsigned int count)
-{
-	bfin_jc_straight_buffer_write(buf, count);
-}
-
-static struct console bfin_jc_early_console __initdata = {
-	.name   = "early_BFJC",
-	.write   = bfin_jc_early_write,
-	.flags   = CON_ANYTIME | CON_PRINTBUFFER,
-	.index   = -1,
-};
-
-struct console * __init
-bfin_jc_early_init(unsigned int port, unsigned int cflag)
-{
-	return &bfin_jc_early_console;
-}
-#endif
-
-MODULE_AUTHOR("Mike Frysinger <vapier@gentoo.org>");
-MODULE_DESCRIPTION("TTY over Blackfin JTAG Communication");
-MODULE_LICENSE("GPL");
diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig
index fec457edad14..3bade5ad3d71 100644
--- a/drivers/tty/hvc/Kconfig
+++ b/drivers/tty/hvc/Kconfig
@@ -88,15 +88,6 @@ config HVC_DCC
 	 driver. This console is used through a JTAG only on ARM. If you don't have
 	 a JTAG then you probably don't want this option.
 
-config HVC_BFIN_JTAG
-	bool "Blackfin JTAG console"
-	depends on BLACKFIN
-	select HVC_DRIVER
-	help
-	 This console uses the Blackfin JTAG to create a console under the
-	 the HVC driver.  If you don't have JTAG, then you probably don't
-	 want this option.
-
 config HVCS
 	tristate "IBM Hypervisor Virtual Console Server support"
 	depends on PPC_PSERIES && HVC_CONSOLE
diff --git a/drivers/tty/hvc/Makefile b/drivers/tty/hvc/Makefile
index 0b02ec7f1dfd..7da1934d34e8 100644
--- a/drivers/tty/hvc/Makefile
+++ b/drivers/tty/hvc/Makefile
@@ -3,12 +3,10 @@ obj-$(CONFIG_HVC_CONSOLE)	+= hvc_vio.o hvsi_lib.o
 obj-$(CONFIG_HVC_OPAL)		+= hvc_opal.o hvsi_lib.o
 obj-$(CONFIG_HVC_OLD_HVSI)	+= hvsi.o
 obj-$(CONFIG_HVC_RTAS)		+= hvc_rtas.o
-obj-$(CONFIG_HVC_TILE)		+= hvc_tile.o
 obj-$(CONFIG_HVC_DCC)		+= hvc_dcc.o
 obj-$(CONFIG_HVC_DRIVER)	+= hvc_console.o
 obj-$(CONFIG_HVC_IRQ)		+= hvc_irq.o
 obj-$(CONFIG_HVC_XEN)		+= hvc_xen.o
 obj-$(CONFIG_HVC_IUCV)		+= hvc_iucv.o
 obj-$(CONFIG_HVC_UDBG)		+= hvc_udbg.o
-obj-$(CONFIG_HVC_BFIN_JTAG)	+= hvc_bfin_jtag.o
 obj-$(CONFIG_HVCS)		+= hvcs.o
diff --git a/drivers/tty/hvc/hvc_bfin_jtag.c b/drivers/tty/hvc/hvc_bfin_jtag.c
deleted file mode 100644
index dd7cae4c195b..000000000000
--- a/drivers/tty/hvc/hvc_bfin_jtag.c
+++ /dev/null
@@ -1,104 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Console via Blackfin JTAG Communication
- *
- * Copyright 2008-2011 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-
-#include "hvc_console.h"
-
-/* See the Debug/Emulation chapter in the HRM */
-#define EMUDOF   0x00000001	/* EMUDAT_OUT full & valid */
-#define EMUDIF   0x00000002	/* EMUDAT_IN full & valid */
-#define EMUDOOVF 0x00000004	/* EMUDAT_OUT overflow */
-#define EMUDIOVF 0x00000008	/* EMUDAT_IN overflow */
-
-/* Helper functions to glue the register API to simple C operations */
-static inline uint32_t bfin_write_emudat(uint32_t emudat)
-{
-	__asm__ __volatile__("emudat = %0;" : : "d"(emudat));
-	return emudat;
-}
-
-static inline uint32_t bfin_read_emudat(void)
-{
-	uint32_t emudat;
-	__asm__ __volatile__("%0 = emudat;" : "=d"(emudat));
-	return emudat;
-}
-
-/* Send data to the host */
-static int hvc_bfin_put_chars(uint32_t vt, const char *buf, int count)
-{
-	static uint32_t outbound_len;
-	uint32_t emudat;
-	int ret;
-
-	if (bfin_read_DBGSTAT() & EMUDOF)
-		return 0;
-
-	if (!outbound_len) {
-		outbound_len = count;
-		bfin_write_emudat(outbound_len);
-		return 0;
-	}
-
-	ret = min(outbound_len, (uint32_t)4);
-	memcpy(&emudat, buf, ret);
-	bfin_write_emudat(emudat);
-	outbound_len -= ret;
-
-	return ret;
-}
-
-/* Receive data from the host */
-static int hvc_bfin_get_chars(uint32_t vt, char *buf, int count)
-{
-	static uint32_t inbound_len;
-	uint32_t emudat;
-	int ret;
-
-	if (!(bfin_read_DBGSTAT() & EMUDIF))
-		return 0;
-	emudat = bfin_read_emudat();
-
-	if (!inbound_len) {
-		inbound_len = emudat;
-		return 0;
-	}
-
-	ret = min(inbound_len, (uint32_t)4);
-	memcpy(buf, &emudat, ret);
-	inbound_len -= ret;
-
-	return ret;
-}
-
-/* Glue the HVC layers to the Blackfin layers */
-static const struct hv_ops hvc_bfin_get_put_ops = {
-	.get_chars = hvc_bfin_get_chars,
-	.put_chars = hvc_bfin_put_chars,
-};
-
-static int __init hvc_bfin_console_init(void)
-{
-	hvc_instantiate(0, 0, &hvc_bfin_get_put_ops);
-	return 0;
-}
-console_initcall(hvc_bfin_console_init);
-
-static int __init hvc_bfin_init(void)
-{
-	hvc_alloc(0, 0, &hvc_bfin_get_put_ops, 128);
-	return 0;
-}
-device_initcall(hvc_bfin_init);
diff --git a/drivers/tty/hvc/hvc_tile.c b/drivers/tty/hvc/hvc_tile.c
deleted file mode 100644
index b517c0661abb..000000000000
--- a/drivers/tty/hvc/hvc_tile.c
+++ /dev/null
@@ -1,196 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- * Tilera TILE Processor hypervisor console
- */
-
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/moduleparam.h>
-#include <linux/platform_device.h>
-#include <linux/types.h>
-
-#include <asm/setup.h>
-#include <arch/sim_def.h>
-
-#include <hv/hypervisor.h>
-
-#include "hvc_console.h"
-
-static int use_sim_console;
-static int __init sim_console(char *str)
-{
-	use_sim_console = 1;
-	return 0;
-}
-early_param("sim_console", sim_console);
-
-int tile_console_write(const char *buf, int count)
-{
-	if (unlikely(use_sim_console)) {
-		int i;
-		for (i = 0; i < count; ++i)
-			__insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_PUTC |
-				     (buf[i] << _SIM_CONTROL_OPERATOR_BITS));
-		__insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_PUTC |
-			     (SIM_PUTC_FLUSH_BINARY <<
-			      _SIM_CONTROL_OPERATOR_BITS));
-		return 0;
-	} else {
-		/* Translate 0 bytes written to EAGAIN for hvc_console_print. */
-		return hv_console_write((HV_VirtAddr)buf, count) ?: -EAGAIN;
-	}
-}
-
-static int hvc_tile_put_chars(uint32_t vt, const char *buf, int count)
-{
-	return tile_console_write(buf, count);
-}
-
-static int hvc_tile_get_chars(uint32_t vt, char *buf, int count)
-{
-	int i, c;
-
-	for (i = 0; i < count; ++i) {
-		c = hv_console_read_if_ready();
-		if (c < 0)
-			break;
-		buf[i] = c;
-	}
-
-	return i;
-}
-
-#ifdef __tilegx__
-/*
- * IRQ based callbacks.
- */
-static int hvc_tile_notifier_add_irq(struct hvc_struct *hp, int irq)
-{
-	int rc;
-	int cpu = raw_smp_processor_id();  /* Choose an arbitrary cpu */
-	HV_Coord coord = { .x = cpu_x(cpu), .y = cpu_y(cpu) };
-
-	rc = notifier_add_irq(hp, irq);
-	if (rc)
-		return rc;
-
-	/*
-	 * Request that the hypervisor start sending us interrupts.
-	 * If the hypervisor returns an error, we still return 0, so that
-	 * we can fall back to polling.
-	 */
-	if (hv_console_set_ipi(KERNEL_PL, irq, coord) < 0)
-		notifier_del_irq(hp, irq);
-
-	return 0;
-}
-
-static void hvc_tile_notifier_del_irq(struct hvc_struct *hp, int irq)
-{
-	HV_Coord coord = { 0, 0 };
-
-	/* Tell the hypervisor to stop sending us interrupts. */
-	hv_console_set_ipi(KERNEL_PL, -1, coord);
-
-	notifier_del_irq(hp, irq);
-}
-
-static void hvc_tile_notifier_hangup_irq(struct hvc_struct *hp, int irq)
-{
-	hvc_tile_notifier_del_irq(hp, irq);
-}
-#endif
-
-static const struct hv_ops hvc_tile_get_put_ops = {
-	.get_chars = hvc_tile_get_chars,
-	.put_chars = hvc_tile_put_chars,
-#ifdef __tilegx__
-	.notifier_add = hvc_tile_notifier_add_irq,
-	.notifier_del = hvc_tile_notifier_del_irq,
-	.notifier_hangup = hvc_tile_notifier_hangup_irq,
-#endif
-};
-
-
-#ifdef __tilegx__
-static int hvc_tile_probe(struct platform_device *pdev)
-{
-	struct hvc_struct *hp;
-	int tile_hvc_irq;
-
-	/* Create our IRQ and register it. */
-	tile_hvc_irq = irq_alloc_hwirq(-1);
-	if (!tile_hvc_irq)
-		return -ENXIO;
-
-	tile_irq_activate(tile_hvc_irq, TILE_IRQ_PERCPU);
-	hp = hvc_alloc(0, tile_hvc_irq, &hvc_tile_get_put_ops, 128);
-	if (IS_ERR(hp)) {
-		irq_free_hwirq(tile_hvc_irq);
-		return PTR_ERR(hp);
-	}
-	dev_set_drvdata(&pdev->dev, hp);
-
-	return 0;
-}
-
-static int hvc_tile_remove(struct platform_device *pdev)
-{
-	int rc;
-	struct hvc_struct *hp = dev_get_drvdata(&pdev->dev);
-
-	rc = hvc_remove(hp);
-	if (rc == 0)
-		irq_free_hwirq(hp->data);
-
-	return rc;
-}
-
-static void hvc_tile_shutdown(struct platform_device *pdev)
-{
-	struct hvc_struct *hp = dev_get_drvdata(&pdev->dev);
-
-	hvc_tile_notifier_del_irq(hp, hp->data);
-}
-
-static struct platform_device hvc_tile_pdev = {
-	.name           = "hvc-tile",
-	.id             = 0,
-};
-
-static struct platform_driver hvc_tile_driver = {
-	.probe          = hvc_tile_probe,
-	.remove         = hvc_tile_remove,
-	.shutdown	= hvc_tile_shutdown,
-	.driver         = {
-		.name   = "hvc-tile",
-	}
-};
-#endif
-
-static int __init hvc_tile_console_init(void)
-{
-	hvc_instantiate(0, 0, &hvc_tile_get_put_ops);
-	add_preferred_console("hvc", 0, NULL);
-	return 0;
-}
-console_initcall(hvc_tile_console_init);
-
-static int __init hvc_tile_init(void)
-{
-#ifndef __tilegx__
-	struct hvc_struct *hp;
-	hp = hvc_alloc(0, 0, &hvc_tile_get_put_ops, 128);
-	return PTR_ERR_OR_ZERO(hp);
-#else
-	platform_device_register(&hvc_tile_pdev);
-	return platform_driver_register(&hvc_tile_driver);
-#endif
-}
-device_initcall(hvc_tile_init);
diff --git a/drivers/tty/metag_da.c b/drivers/tty/metag_da.c
deleted file mode 100644
index 99eaed4b2dbc..000000000000
--- a/drivers/tty/metag_da.c
+++ /dev/null
@@ -1,665 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  dashtty.c - tty driver for Dash channels interface.
- *
- *  Copyright (C) 2007,2008,2012 Imagination Technologies
- */
-
-#include <linux/atomic.h>
-#include <linux/completion.h>
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/export.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/kthread.h>
-#include <linux/moduleparam.h>
-#include <linux/mutex.h>
-#include <linux/sched.h>
-#include <linux/serial.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_flip.h>
-#include <linux/uaccess.h>
-
-#include <asm/da.h>
-
-/* Channel error codes */
-#define CONAOK	0
-#define CONERR	1
-#define CONBAD	2
-#define CONPRM	3
-#define CONADR	4
-#define CONCNT	5
-#define CONCBF	6
-#define CONCBE	7
-#define CONBSY	8
-
-/* Default channel for the console */
-#define CONSOLE_CHANNEL      1
-
-#define NUM_TTY_CHANNELS     6
-
-/* Auto allocate */
-#define DA_TTY_MAJOR        0
-
-/* A speedy poll rate helps the userland debug process connection response.
- * But, if you set it too high then no other userland processes get much
- * of a look in.
- */
-#define DA_TTY_POLL (HZ / 50)
-
-/*
- * A short put delay improves latency but has a high throughput overhead
- */
-#define DA_TTY_PUT_DELAY (HZ / 100)
-
-static atomic_t num_channels_need_poll = ATOMIC_INIT(0);
-
-static struct timer_list poll_timer;
-
-static struct tty_driver *channel_driver;
-
-static struct timer_list put_timer;
-static struct task_struct *dashtty_thread;
-
-/*
- * The console_poll parameter determines whether the console channel should be
- * polled for input.
- * By default the console channel isn't polled at all, in order to avoid the
- * overhead, but that means it isn't possible to have a login on /dev/console.
- */
-static bool console_poll;
-module_param(console_poll, bool, S_IRUGO);
-
-#define RX_BUF_SIZE 1024
-
-enum {
-	INCHR = 1,
-	OUTCHR,
-	RDBUF,
-	WRBUF,
-	RDSTAT
-};
-
-/**
- * struct dashtty_port - Wrapper struct for dashtty tty_port.
- * @port:		TTY port data
- * @rx_lock:		Lock for rx_buf.
- *			This protects between the poll timer and user context.
- *			It's also held during read SWITCH operations.
- * @rx_buf:		Read buffer
- * @xmit_lock:		Lock for xmit_*, and port.xmit_buf.
- *			This protects between user context and kernel thread.
- *			It's also held during write SWITCH operations.
- * @xmit_cnt:		Size of xmit buffer contents
- * @xmit_head:		Head of xmit buffer where data is written
- * @xmit_tail:		Tail of xmit buffer where data is read
- * @xmit_empty:		Completion for xmit buffer being empty
- */
-struct dashtty_port {
-	struct tty_port		 port;
-	spinlock_t		 rx_lock;
-	void			*rx_buf;
-	struct mutex		 xmit_lock;
-	unsigned int		 xmit_cnt;
-	unsigned int		 xmit_head;
-	unsigned int		 xmit_tail;
-	struct completion	 xmit_empty;
-};
-
-static struct dashtty_port dashtty_ports[NUM_TTY_CHANNELS];
-
-static atomic_t dashtty_xmit_cnt = ATOMIC_INIT(0);
-static wait_queue_head_t dashtty_waitqueue;
-
-/*
- * Low-level DA channel access routines
- */
-static int chancall(int in_bios_function, int in_channel,
-		    int in_arg2, void *in_arg3,
-		    void *in_arg4)
-{
-	register int   bios_function asm("D1Ar1") = in_bios_function;
-	register int   channel       asm("D0Ar2") = in_channel;
-	register int   arg2          asm("D1Ar3") = in_arg2;
-	register void *arg3          asm("D0Ar4") = in_arg3;
-	register void *arg4          asm("D1Ar5") = in_arg4;
-	register int   bios_call     asm("D0Ar6") = 3;
-	register int   result        asm("D0Re0");
-
-	asm volatile (
-		"MSETL	[A0StP++], %6,%4,%2\n\t"
-		"ADD	A0StP, A0StP, #8\n\t"
-		"SWITCH	#0x0C30208\n\t"
-		"GETD	%0, [A0StP+#-8]\n\t"
-		"SUB	A0StP, A0StP, #(4*6)+8\n\t"
-		: "=d" (result)   /* outs */
-		: "d" (bios_function),
-		  "d" (channel),
-		  "d" (arg2),
-		  "d" (arg3),
-		  "d" (arg4),
-		  "d" (bios_call) /* ins */
-		: "memory");
-
-	return result;
-}
-
-/*
- * Attempts to fetch count bytes from channel and returns actual count.
- */
-static int fetch_data(unsigned int channel)
-{
-	struct dashtty_port *dport = &dashtty_ports[channel];
-	int received = 0;
-
-	spin_lock_bh(&dport->rx_lock);
-	/* check the port isn't being shut down */
-	if (!dport->rx_buf)
-		goto unlock;
-	if (chancall(RDBUF, channel, RX_BUF_SIZE,
-		     (void *)dport->rx_buf, &received) == CONAOK) {
-		if (received) {
-			int space;
-			unsigned char *cbuf;
-
-			space = tty_prepare_flip_string(&dport->port, &cbuf,
-							received);
-
-			if (space <= 0)
-				goto unlock;
-
-			memcpy(cbuf, dport->rx_buf, space);
-			tty_flip_buffer_push(&dport->port);
-		}
-	}
-unlock:
-	spin_unlock_bh(&dport->rx_lock);
-
-	return received;
-}
-
-/**
- * find_channel_to_poll() - Returns number of the next channel to poll.
- * Returns:	The number of the next channel to poll, or -1 if none need
- *		polling.
- */
-static int find_channel_to_poll(void)
-{
-	static int last_polled_channel;
-	int last = last_polled_channel;
-	int chan;
-	struct dashtty_port *dport;
-
-	for (chan = last + 1; ; ++chan) {
-		if (chan >= NUM_TTY_CHANNELS)
-			chan = 0;
-
-		dport = &dashtty_ports[chan];
-		if (dport->rx_buf) {
-			last_polled_channel = chan;
-			return chan;
-		}
-
-		if (chan == last)
-			break;
-	}
-	return -1;
-}
-
-/**
- * put_channel_data() - Write out a block of channel data.
- * @chan:	DA channel number.
- *
- * Write a single block of data out to the debug adapter. If the circular buffer
- * is wrapped then only the first block is written.
- *
- * Returns:	1 if the remote buffer was too full to accept data.
- *		0 otherwise.
- */
-static int put_channel_data(unsigned int chan)
-{
-	struct dashtty_port *dport;
-	struct tty_struct *tty;
-	int number_written;
-	unsigned int count = 0;
-
-	dport = &dashtty_ports[chan];
-	mutex_lock(&dport->xmit_lock);
-	if (dport->xmit_cnt) {
-		count = min((unsigned int)(SERIAL_XMIT_SIZE - dport->xmit_tail),
-			    dport->xmit_cnt);
-		chancall(WRBUF, chan, count,
-			 dport->port.xmit_buf + dport->xmit_tail,
-			 &number_written);
-		dport->xmit_cnt -= number_written;
-		if (!dport->xmit_cnt) {
-			/* reset pointers to avoid wraps */
-			dport->xmit_head = 0;
-			dport->xmit_tail = 0;
-			complete(&dport->xmit_empty);
-		} else {
-			dport->xmit_tail += number_written;
-			if (dport->xmit_tail >= SERIAL_XMIT_SIZE)
-				dport->xmit_tail -= SERIAL_XMIT_SIZE;
-		}
-		atomic_sub(number_written, &dashtty_xmit_cnt);
-	}
-	mutex_unlock(&dport->xmit_lock);
-
-	/* if we've made more data available, wake up tty */
-	if (count && number_written) {
-		tty = tty_port_tty_get(&dport->port);
-		if (tty) {
-			tty_wakeup(tty);
-			tty_kref_put(tty);
-		}
-	}
-
-	/* did the write fail? */
-	return count && !number_written;
-}
-
-/**
- * put_data() - Kernel thread to write out blocks of channel data to DA.
- * @arg:	Unused.
- *
- * This kernel thread runs while @dashtty_xmit_cnt != 0, and loops over the
- * channels to write out any buffered data. If any of the channels stall due to
- * the remote buffer being full, a hold off happens to allow the debugger to
- * drain the buffer.
- */
-static int put_data(void *arg)
-{
-	unsigned int chan, stall;
-
-	__set_current_state(TASK_RUNNING);
-	while (!kthread_should_stop()) {
-		/*
-		 * For each channel see if there's anything to transmit in the
-		 * port's xmit_buf.
-		 */
-		stall = 0;
-		for (chan = 0; chan < NUM_TTY_CHANNELS; ++chan)
-			stall += put_channel_data(chan);
-
-		/*
-		 * If some of the buffers are full, hold off for a short while
-		 * to allow them to empty.
-		 */
-		if (stall)
-			msleep(25);
-
-		wait_event_interruptible(dashtty_waitqueue,
-					 atomic_read(&dashtty_xmit_cnt));
-	}
-
-	return 0;
-}
-
-/*
- *	This gets called every DA_TTY_POLL and polls the channels for data
- */
-static void dashtty_timer(struct timer_list *poll_timer)
-{
-	int channel;
-
-	/* If there are no ports open do nothing and don't poll again. */
-	if (!atomic_read(&num_channels_need_poll))
-		return;
-
-	channel = find_channel_to_poll();
-
-	/* Did we find a channel to poll? */
-	if (channel >= 0)
-		fetch_data(channel);
-
-	mod_timer(poll_timer, jiffies + DA_TTY_POLL);
-}
-
-static void add_poll_timer(struct timer_list *poll_timer)
-{
-	timer_setup(poll_timer, dashtty_timer, TIMER_PINNED);
-	poll_timer->expires = jiffies + DA_TTY_POLL;
-
-	/*
-	 * Always attach the timer to the boot CPU. The DA channels are per-CPU
-	 * so all polling should be from a single CPU.
-	 */
-	add_timer_on(poll_timer, 0);
-}
-
-static int dashtty_port_activate(struct tty_port *port, struct tty_struct *tty)
-{
-	struct dashtty_port *dport = container_of(port, struct dashtty_port,
-						  port);
-	void *rx_buf;
-
-	/* Allocate the buffer we use for writing data */
-	if (tty_port_alloc_xmit_buf(port) < 0)
-		goto err;
-
-	/* Allocate the buffer we use for reading data */
-	rx_buf = kzalloc(RX_BUF_SIZE, GFP_KERNEL);
-	if (!rx_buf)
-		goto err_free_xmit;
-
-	spin_lock_bh(&dport->rx_lock);
-	dport->rx_buf = rx_buf;
-	spin_unlock_bh(&dport->rx_lock);
-
-	/*
-	 * Don't add the poll timer if we're opening a console. This
-	 * avoids the overhead of polling the Dash but means it is not
-	 * possible to have a login on /dev/console.
-	 *
-	 */
-	if (console_poll || dport != &dashtty_ports[CONSOLE_CHANNEL])
-		if (atomic_inc_return(&num_channels_need_poll) == 1)
-			add_poll_timer(&poll_timer);
-
-	return 0;
-err_free_xmit:
-	tty_port_free_xmit_buf(port);
-err:
-	return -ENOMEM;
-}
-
-static void dashtty_port_shutdown(struct tty_port *port)
-{
-	struct dashtty_port *dport = container_of(port, struct dashtty_port,
-						  port);
-	void *rx_buf;
-	unsigned int count;
-
-	/* stop reading */
-	if (console_poll || dport != &dashtty_ports[CONSOLE_CHANNEL])
-		if (atomic_dec_and_test(&num_channels_need_poll))
-			del_timer_sync(&poll_timer);
-
-	mutex_lock(&dport->xmit_lock);
-	count = dport->xmit_cnt;
-	mutex_unlock(&dport->xmit_lock);
-	if (count) {
-		/*
-		 * There's still data to write out, so wake and wait for the
-		 * writer thread to drain the buffer.
-		 */
-		del_timer(&put_timer);
-		wake_up_interruptible(&dashtty_waitqueue);
-		wait_for_completion(&dport->xmit_empty);
-	}
-
-	/* Null the read buffer (timer could still be running!) */
-	spin_lock_bh(&dport->rx_lock);
-	rx_buf = dport->rx_buf;
-	dport->rx_buf = NULL;
-	spin_unlock_bh(&dport->rx_lock);
-	/* Free the read buffer */
-	kfree(rx_buf);
-
-	/* Free the write buffer */
-	tty_port_free_xmit_buf(port);
-}
-
-static const struct tty_port_operations dashtty_port_ops = {
-	.activate	= dashtty_port_activate,
-	.shutdown	= dashtty_port_shutdown,
-};
-
-static int dashtty_install(struct tty_driver *driver, struct tty_struct *tty)
-{
-	return tty_port_install(&dashtty_ports[tty->index].port, driver, tty);
-}
-
-static int dashtty_open(struct tty_struct *tty, struct file *filp)
-{
-	return tty_port_open(tty->port, tty, filp);
-}
-
-static void dashtty_close(struct tty_struct *tty, struct file *filp)
-{
-	return tty_port_close(tty->port, tty, filp);
-}
-
-static void dashtty_hangup(struct tty_struct *tty)
-{
-	int channel;
-	struct dashtty_port *dport;
-
-	channel = tty->index;
-	dport = &dashtty_ports[channel];
-
-	/* drop any data in the xmit buffer */
-	mutex_lock(&dport->xmit_lock);
-	if (dport->xmit_cnt) {
-		atomic_sub(dport->xmit_cnt, &dashtty_xmit_cnt);
-		dport->xmit_cnt = 0;
-		dport->xmit_head = 0;
-		dport->xmit_tail = 0;
-		complete(&dport->xmit_empty);
-	}
-	mutex_unlock(&dport->xmit_lock);
-
-	tty_port_hangup(tty->port);
-}
-
-/**
- * dashtty_put_timer() - Delayed wake up of kernel thread.
- * @ignored:	unused
- *
- * This timer function wakes up the kernel thread if any data exists in the
- * buffers. It is used to delay the expensive writeout until the writer has
- * stopped writing.
- */
-static void dashtty_put_timer(struct timer_list *unused)
-{
-	if (atomic_read(&dashtty_xmit_cnt))
-		wake_up_interruptible(&dashtty_waitqueue);
-}
-
-static int dashtty_write(struct tty_struct *tty, const unsigned char *buf,
-			 int total)
-{
-	int channel, count, block;
-	struct dashtty_port *dport;
-
-	/* Determine the channel */
-	channel = tty->index;
-	dport = &dashtty_ports[channel];
-
-	/*
-	 * Write to output buffer.
-	 *
-	 * The reason that we asynchronously write the buffer is because if we
-	 * were to write the buffer synchronously then because DA channels are
-	 * per-CPU the buffer would be written to the channel of whatever CPU
-	 * we're running on.
-	 *
-	 * What we actually want to happen is have all input and output done on
-	 * one CPU.
-	 */
-	mutex_lock(&dport->xmit_lock);
-	/* work out how many bytes we can write to the xmit buffer */
-	total = min(total, (int)(SERIAL_XMIT_SIZE - dport->xmit_cnt));
-	atomic_add(total, &dashtty_xmit_cnt);
-	dport->xmit_cnt += total;
-	/* write the actual bytes (may need splitting if it wraps) */
-	for (count = total; count; count -= block) {
-		block = min(count, (int)(SERIAL_XMIT_SIZE - dport->xmit_head));
-		memcpy(dport->port.xmit_buf + dport->xmit_head, buf, block);
-		dport->xmit_head += block;
-		if (dport->xmit_head >= SERIAL_XMIT_SIZE)
-			dport->xmit_head -= SERIAL_XMIT_SIZE;
-		buf += block;
-	}
-	count = dport->xmit_cnt;
-	/* xmit buffer no longer empty? */
-	if (count)
-		reinit_completion(&dport->xmit_empty);
-	mutex_unlock(&dport->xmit_lock);
-
-	if (total) {
-		/*
-		 * If the buffer is full, wake up the kthread, otherwise allow
-		 * some more time for the buffer to fill up a bit before waking
-		 * it.
-		 */
-		if (count == SERIAL_XMIT_SIZE) {
-			del_timer(&put_timer);
-			wake_up_interruptible(&dashtty_waitqueue);
-		} else {
-			mod_timer(&put_timer, jiffies + DA_TTY_PUT_DELAY);
-		}
-	}
-	return total;
-}
-
-static int dashtty_write_room(struct tty_struct *tty)
-{
-	struct dashtty_port *dport;
-	int channel;
-	int room;
-
-	channel = tty->index;
-	dport = &dashtty_ports[channel];
-
-	/* report the space in the xmit buffer */
-	mutex_lock(&dport->xmit_lock);
-	room = SERIAL_XMIT_SIZE - dport->xmit_cnt;
-	mutex_unlock(&dport->xmit_lock);
-
-	return room;
-}
-
-static int dashtty_chars_in_buffer(struct tty_struct *tty)
-{
-	struct dashtty_port *dport;
-	int channel;
-	int chars;
-
-	channel = tty->index;
-	dport = &dashtty_ports[channel];
-
-	/* report the number of bytes in the xmit buffer */
-	mutex_lock(&dport->xmit_lock);
-	chars = dport->xmit_cnt;
-	mutex_unlock(&dport->xmit_lock);
-
-	return chars;
-}
-
-static const struct tty_operations dashtty_ops = {
-	.install		= dashtty_install,
-	.open			= dashtty_open,
-	.close			= dashtty_close,
-	.hangup			= dashtty_hangup,
-	.write			= dashtty_write,
-	.write_room		= dashtty_write_room,
-	.chars_in_buffer	= dashtty_chars_in_buffer,
-};
-
-static int __init dashtty_init(void)
-{
-	int ret;
-	int nport;
-	struct dashtty_port *dport;
-
-	if (!metag_da_enabled())
-		return -ENODEV;
-
-	channel_driver = tty_alloc_driver(NUM_TTY_CHANNELS,
-					  TTY_DRIVER_REAL_RAW);
-	if (IS_ERR(channel_driver))
-		return PTR_ERR(channel_driver);
-
-	channel_driver->driver_name = "metag_da";
-	channel_driver->name = "ttyDA";
-	channel_driver->major = DA_TTY_MAJOR;
-	channel_driver->minor_start = 0;
-	channel_driver->type = TTY_DRIVER_TYPE_SERIAL;
-	channel_driver->subtype = SERIAL_TYPE_NORMAL;
-	channel_driver->init_termios = tty_std_termios;
-	channel_driver->init_termios.c_cflag |= CLOCAL;
-
-	tty_set_operations(channel_driver, &dashtty_ops);
-	for (nport = 0; nport < NUM_TTY_CHANNELS; nport++) {
-		dport = &dashtty_ports[nport];
-		tty_port_init(&dport->port);
-		dport->port.ops = &dashtty_port_ops;
-		spin_lock_init(&dport->rx_lock);
-		mutex_init(&dport->xmit_lock);
-		/* the xmit buffer starts empty, i.e. completely written */
-		init_completion(&dport->xmit_empty);
-		complete(&dport->xmit_empty);
-	}
-
-	timer_setup(&put_timer, dashtty_put_timer, 0);
-
-	init_waitqueue_head(&dashtty_waitqueue);
-	dashtty_thread = kthread_create(put_data, NULL, "ttyDA");
-	if (IS_ERR(dashtty_thread)) {
-		pr_err("Couldn't create dashtty thread\n");
-		ret = PTR_ERR(dashtty_thread);
-		goto err_destroy_ports;
-	}
-	/*
-	 * Bind the writer thread to the boot CPU so it can't migrate.
-	 * DA channels are per-CPU and we want all channel I/O to be on a single
-	 * predictable CPU.
-	 */
-	kthread_bind(dashtty_thread, 0);
-	wake_up_process(dashtty_thread);
-
-	ret = tty_register_driver(channel_driver);
-
-	if (ret < 0) {
-		pr_err("Couldn't install dashtty driver: err %d\n",
-		       ret);
-		goto err_stop_kthread;
-	}
-
-	return 0;
-
-err_stop_kthread:
-	kthread_stop(dashtty_thread);
-err_destroy_ports:
-	for (nport = 0; nport < NUM_TTY_CHANNELS; nport++) {
-		dport = &dashtty_ports[nport];
-		tty_port_destroy(&dport->port);
-	}
-	put_tty_driver(channel_driver);
-	return ret;
-}
-device_initcall(dashtty_init);
-
-#ifdef CONFIG_DA_CONSOLE
-
-static void dash_console_write(struct console *co, const char *s,
-			       unsigned int count)
-{
-	int actually_written;
-
-	chancall(WRBUF, CONSOLE_CHANNEL, count, (void *)s, &actually_written);
-}
-
-static struct tty_driver *dash_console_device(struct console *c, int *index)
-{
-	*index = c->index;
-	return channel_driver;
-}
-
-struct console dash_console = {
-	.name = "ttyDA",
-	.write = dash_console_write,
-	.device = dash_console_device,
-	.flags = CON_PRINTBUFFER,
-	.index = 1,
-};
-
-#endif
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 3682fd3e960c..736720a8d84f 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -498,92 +498,6 @@ config SERIAL_SA1100_CONSOLE
 	  your boot loader (lilo or loadlin) about how to pass options to the
 	  kernel at boot time.)
 
-config SERIAL_BFIN
-	tristate "Blackfin serial port support"
-	depends on BLACKFIN
-	select SERIAL_CORE
-	select SERIAL_BFIN_UART0 if (BF531 || BF532 || BF533 || BF561)
-	help
-	  Add support for the built-in UARTs on the Blackfin.
-
-	  To compile this driver as a module, choose M here: the
-	  module is named bfin_uart.ko.
-
-config SERIAL_BFIN_CONSOLE
-	bool "Console on Blackfin serial port"
-	depends on SERIAL_BFIN=y
-	select SERIAL_CORE_CONSOLE
-
-choice
-	prompt "UART Mode"
-	depends on SERIAL_BFIN
-	default SERIAL_BFIN_DMA
-	help
-	  This driver supports the built-in serial ports of the Blackfin family
-	  of CPUs
-
-config SERIAL_BFIN_DMA
-	bool "DMA mode"
-	depends on !DMA_UNCACHED_NONE && KGDB_SERIAL_CONSOLE=n
-	help
-	  This driver works under DMA mode. If this option is selected, the
-	  blackfin simple dma driver is also enabled.
-
-config SERIAL_BFIN_PIO
-	bool "PIO mode"
-	help
-	  This driver works under PIO mode.
-
-endchoice
-
-config SERIAL_BFIN_UART0
-	bool "Enable UART0"
-	depends on SERIAL_BFIN
-	help
-	  Enable UART0
-
-config BFIN_UART0_CTSRTS
-	bool "Enable UART0 hardware flow control"
-	depends on SERIAL_BFIN_UART0
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_UART1
-	bool "Enable UART1"
-	depends on SERIAL_BFIN && (!BF531 && !BF532 && !BF533 && !BF561)
-	help
-	  Enable UART1
-
-config BFIN_UART1_CTSRTS
-	bool "Enable UART1 hardware flow control"
-	depends on SERIAL_BFIN_UART1
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_UART2
-	bool "Enable UART2"
-	depends on SERIAL_BFIN && (BF54x || BF538 || BF539)
-	help
-	  Enable UART2
-
-config BFIN_UART2_CTSRTS
-	bool "Enable UART2 hardware flow control"
-	depends on SERIAL_BFIN_UART2
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_UART3
-	bool "Enable UART3"
-	depends on SERIAL_BFIN && (BF54x)
-	help
-	  Enable UART3
-
-config BFIN_UART3_CTSRTS
-	bool "Enable UART3 hardware flow control"
-	depends on SERIAL_BFIN_UART3
-	help
-	  Enable hardware flow control in the driver.
-
 config SERIAL_IMX
 	tristate "IMX serial port support"
 	depends on HAS_DMA
@@ -991,35 +905,6 @@ config SERIAL_ICOM
 	  This driver can also be built as a module.  If so, the module
 	  will be called icom.
 
-config SERIAL_M32R_SIO
-	bool "M32R SIO I/F"
-	depends on M32R
-	default y
-	select SERIAL_CORE
-	help
-	  Say Y here if you want to use the M32R serial controller.
-
-config SERIAL_M32R_SIO_CONSOLE
-	bool "use SIO console"
-	depends on SERIAL_M32R_SIO=y
-	select SERIAL_CORE_CONSOLE
-	help
-	  Say Y here if you want to support a serial console.
-
-	  If you use an M3T-M32700UT or an OPSPUT platform,
-	  please say also y for SERIAL_M32R_PLDSIO.
-
-config SERIAL_M32R_PLDSIO
-	bool "M32R SIO I/F on a PLD"
-	depends on SERIAL_M32R_SIO=y && (PLAT_OPSPUT || PLAT_USRV || PLAT_M32700UT)
-	default n
-	help
-	  Say Y here if you want to use the M32R serial controller
-	  on a PLD (Programmable Logic Device).
-
-	  If you use an M3T-M32700UT or an OPSPUT platform,
-	  please say Y.
-
 config SERIAL_TXX9
 	bool "TMPTX39XX/49XX SIO support"
 	depends on HAS_TXX9_SERIAL
@@ -1114,17 +999,6 @@ config SERIAL_VT8500_CONSOLE
 	depends on SERIAL_VT8500=y
 	select SERIAL_CORE_CONSOLE
 
-config SERIAL_ETRAXFS
-	bool "ETRAX FS serial port support"
-	depends on ETRAX_ARCH_V32 && OF
-	select SERIAL_CORE
-	select SERIAL_MCTRL_GPIO if GPIOLIB
-
-config SERIAL_ETRAXFS_CONSOLE
-	bool "ETRAX FS serial console support"
-	depends on SERIAL_ETRAXFS
-	select SERIAL_CORE_CONSOLE
-
 config SERIAL_NETX
 	tristate "NetX serial port support"
 	depends on ARCH_NETX
@@ -1242,69 +1116,6 @@ config SERIAL_SC16IS7XX_SPI
           This is additional support to exsisting driver.
           You must select at least one bus for the driver to be built.
 
-config SERIAL_BFIN_SPORT
-	tristate "Blackfin SPORT emulate UART"
-	depends on BLACKFIN
-	select SERIAL_CORE
-	help
-	  Enable SPORT emulate UART on Blackfin series.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called bfin_sport_uart.
-
-config SERIAL_BFIN_SPORT_CONSOLE
-	bool "Console on Blackfin sport emulated uart"
-	depends on SERIAL_BFIN_SPORT=y
-	select SERIAL_CORE_CONSOLE
-
-config SERIAL_BFIN_SPORT0_UART
-	bool "Enable UART over SPORT0"
-	depends on SERIAL_BFIN_SPORT && !(BF542 || BF544)
-	help
-	  Enable UART over SPORT0
-
-config SERIAL_BFIN_SPORT0_UART_CTSRTS
-	bool "Enable UART over SPORT0 hardware flow control"
-	depends on SERIAL_BFIN_SPORT0_UART
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_SPORT1_UART
-	bool "Enable UART over SPORT1"
-	depends on SERIAL_BFIN_SPORT
-	help
-	  Enable UART over SPORT1
-
-config SERIAL_BFIN_SPORT1_UART_CTSRTS
-	bool "Enable UART over SPORT1 hardware flow control"
-	depends on SERIAL_BFIN_SPORT1_UART
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_SPORT2_UART
-	bool "Enable UART over SPORT2"
-	depends on SERIAL_BFIN_SPORT && (BF54x || BF538 || BF539)
-	help
-	  Enable UART over SPORT2
-
-config SERIAL_BFIN_SPORT2_UART_CTSRTS
-	bool "Enable UART over SPORT2 hardware flow control"
-	depends on SERIAL_BFIN_SPORT2_UART
-	help
-	  Enable hardware flow control in the driver.
-
-config SERIAL_BFIN_SPORT3_UART
-	bool "Enable UART over SPORT3"
-	depends on SERIAL_BFIN_SPORT && (BF54x || BF538 || BF539)
-	help
-	  Enable UART over SPORT3
-
-config SERIAL_BFIN_SPORT3_UART_CTSRTS
-	bool "Enable UART over SPORT3 hardware flow control"
-	depends on SERIAL_BFIN_SPORT3_UART
-	help
-	  Enable hardware flow control in the driver.
-
 config SERIAL_TIMBERDALE
 	tristate "Support for timberdale UART"
 	select SERIAL_CORE
@@ -1519,15 +1330,6 @@ config SERIAL_EFM32_UART_CONSOLE
 	depends on SERIAL_EFM32_UART=y
 	select SERIAL_CORE_CONSOLE
 
-config SERIAL_TILEGX
-	tristate "TILE-Gx on-chip serial port support"
-	depends on TILEGX
-	select TILE_GXIO_UART
-	select SERIAL_CORE
-	---help---
-	  This device provides access to the on-chip UARTs on the TILE-Gx
-	  processor.
-
 config SERIAL_ARC
 	tristate "ARC UART driver support"
 	select SERIAL_CORE
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index 842d185d697e..b30ee2e5d518 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -29,8 +29,6 @@ obj-$(CONFIG_SERIAL_PXA_NON8250) += pxa.o
 obj-$(CONFIG_SERIAL_PNX8XXX) += pnx8xxx_uart.o
 obj-$(CONFIG_SERIAL_SA1100) += sa1100.o
 obj-$(CONFIG_SERIAL_BCM63XX) += bcm63xx_uart.o
-obj-$(CONFIG_SERIAL_BFIN) += bfin_uart.o
-obj-$(CONFIG_SERIAL_BFIN_SPORT) += bfin_sport_uart.o
 obj-$(CONFIG_SERIAL_SAMSUNG) += samsung.o
 obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
 obj-$(CONFIG_SERIAL_MAX310X) += max310x.o
@@ -47,12 +45,9 @@ obj-$(CONFIG_SERIAL_CPM) += cpm_uart/
 obj-$(CONFIG_SERIAL_IMX) += imx.o
 obj-$(CONFIG_SERIAL_MPC52xx) += mpc52xx_uart.o
 obj-$(CONFIG_SERIAL_ICOM) += icom.o
-obj-$(CONFIG_SERIAL_M32R_SIO) += m32r_sio.o
 obj-$(CONFIG_SERIAL_MPSC) += mpsc.o
 obj-$(CONFIG_SERIAL_MESON) += meson_uart.o
 obj-$(CONFIG_SERIAL_SB1250_DUART) += sb1250-duart.o
-obj-$(CONFIG_ETRAX_SERIAL) += crisv10.o
-obj-$(CONFIG_SERIAL_ETRAXFS) += etraxfs-uart.o
 obj-$(CONFIG_SERIAL_SCCNXP) += sccnxp.o
 obj-$(CONFIG_SERIAL_SC16IS7XX_CORE) += sc16is7xx.o
 obj-$(CONFIG_SERIAL_JSM) += jsm/
@@ -68,7 +63,6 @@ obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
 obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o
 obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o
 obj-$(CONFIG_SERIAL_ST_ASC) += st-asc.o
-obj-$(CONFIG_SERIAL_TILEGX) += tilegx.o
 obj-$(CONFIG_SERIAL_QE) += ucc_uart.o
 obj-$(CONFIG_SERIAL_TIMBERDALE)	+= timbuart.o
 obj-$(CONFIG_SERIAL_GRLIB_GAISLER_APBUART) += apbuart.o
diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
deleted file mode 100644
index 4ccca5d22f4f..000000000000
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ /dev/null
@@ -1,937 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Blackfin On-Chip Sport Emulated UART Driver
- *
- * Copyright 2006-2009 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-/*
- * This driver and the hardware supported are in term of EE-191 of ADI.
- * http://www.analog.com/static/imported-files/application_notes/EE191.pdf 
- * This application note describe how to implement a UART on a Sharc DSP,
- * but this driver is implemented on Blackfin Processor.
- * Transmit Frame Sync is not used by this driver to transfer data out.
- */
-
-/* #define DEBUG */
-
-#define DRV_NAME "bfin-sport-uart"
-#define DEVICE_NAME	"ttySS"
-#define pr_fmt(fmt) DRV_NAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/ioport.h>
-#include <linux/io.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_core.h>
-#include <linux/gpio.h>
-
-#include <asm/bfin_sport.h>
-#include <asm/delay.h>
-#include <asm/portmux.h>
-
-#include "bfin_sport_uart.h"
-
-struct sport_uart_port {
-	struct uart_port	port;
-	int			err_irq;
-	unsigned short		csize;
-	unsigned short		rxmask;
-	unsigned short		txmask1;
-	unsigned short		txmask2;
-	unsigned char		stopb;
-/*	unsigned char		parib; */
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-	int cts_pin;
-	int rts_pin;
-#endif
-};
-
-static int sport_uart_tx_chars(struct sport_uart_port *up);
-static void sport_stop_tx(struct uart_port *port);
-
-static inline void tx_one_byte(struct sport_uart_port *up, unsigned int value)
-{
-	pr_debug("%s value:%x, mask1=0x%x, mask2=0x%x\n", __func__, value,
-		up->txmask1, up->txmask2);
-
-	/* Place Start and Stop bits */
-	__asm__ __volatile__ (
-		"%[val] <<= 1;"
-		"%[val] = %[val] & %[mask1];"
-		"%[val] = %[val] | %[mask2];"
-		: [val]"+d"(value)
-		: [mask1]"d"(up->txmask1), [mask2]"d"(up->txmask2)
-		: "ASTAT"
-	);
-	pr_debug("%s value:%x\n", __func__, value);
-
-	SPORT_PUT_TX(up, value);
-}
-
-static inline unsigned char rx_one_byte(struct sport_uart_port *up)
-{
-	unsigned int value;
-	unsigned char extract;
-	u32 tmp_mask1, tmp_mask2, tmp_shift, tmp;
-
-	if ((up->csize + up->stopb) > 7)
-		value = SPORT_GET_RX32(up);
-	else
-		value = SPORT_GET_RX(up);
-
-	pr_debug("%s value:%x, cs=%d, mask=0x%x\n", __func__, value,
-		up->csize, up->rxmask);
-
-	/* Extract data */
-	__asm__ __volatile__ (
-		"%[extr] = 0;"
-		"%[mask1] = %[rxmask];"
-		"%[mask2] = 0x0200(Z);"
-		"%[shift] = 0;"
-		"LSETUP(.Lloop_s, .Lloop_e) LC0 = %[lc];"
-		".Lloop_s:"
-		"%[tmp] = extract(%[val], %[mask1].L)(Z);"
-		"%[tmp] <<= %[shift];"
-		"%[extr] = %[extr] | %[tmp];"
-		"%[mask1] = %[mask1] - %[mask2];"
-		".Lloop_e:"
-		"%[shift] += 1;"
-		: [extr]"=&d"(extract), [shift]"=&d"(tmp_shift), [tmp]"=&d"(tmp),
-		  [mask1]"=&d"(tmp_mask1), [mask2]"=&d"(tmp_mask2)
-		: [val]"d"(value), [rxmask]"d"(up->rxmask), [lc]"a"(up->csize)
-		: "ASTAT", "LB0", "LC0", "LT0"
-	);
-
-	pr_debug("	extract:%x\n", extract);
-	return extract;
-}
-
-static int sport_uart_setup(struct sport_uart_port *up, int size, int baud_rate)
-{
-	int tclkdiv, rclkdiv;
-	unsigned int sclk = get_sclk();
-
-	/* Set TCR1 and TCR2, TFSR is not enabled for uart */
-	SPORT_PUT_TCR1(up, (LATFS | ITFS | TFSR | TLSBIT | ITCLK));
-	SPORT_PUT_TCR2(up, size + 1);
-	pr_debug("%s TCR1:%x, TCR2:%x\n", __func__, SPORT_GET_TCR1(up), SPORT_GET_TCR2(up));
-
-	/* Set RCR1 and RCR2 */
-	SPORT_PUT_RCR1(up, (RCKFE | LARFS | LRFS | RFSR | IRCLK));
-	SPORT_PUT_RCR2(up, (size + 1) * 2 - 1);
-	pr_debug("%s RCR1:%x, RCR2:%x\n", __func__, SPORT_GET_RCR1(up), SPORT_GET_RCR2(up));
-
-	tclkdiv = sclk / (2 * baud_rate) - 1;
-	/* The actual uart baud rate of devices vary between +/-2%. The sport
-	 * RX sample rate should be faster than the double of the worst case,
-	 * otherwise, wrong data are received. So, set sport RX clock to be
-	 * 3% faster.
-	 */
-	rclkdiv = sclk / (2 * baud_rate * 2 * 97 / 100) - 1;
-	SPORT_PUT_TCLKDIV(up, tclkdiv);
-	SPORT_PUT_RCLKDIV(up, rclkdiv);
-	SSYNC();
-	pr_debug("%s sclk:%d, baud_rate:%d, tclkdiv:%d, rclkdiv:%d\n",
-			__func__, sclk, baud_rate, tclkdiv, rclkdiv);
-
-	return 0;
-}
-
-static irqreturn_t sport_uart_rx_irq(int irq, void *dev_id)
-{
-	struct sport_uart_port *up = dev_id;
-	struct tty_port *port = &up->port.state->port;
-	unsigned int ch;
-
-	spin_lock(&up->port.lock);
-
-	while (SPORT_GET_STAT(up) & RXNE) {
-		ch = rx_one_byte(up);
-		up->port.icount.rx++;
-
-		if (!uart_handle_sysrq_char(&up->port, ch))
-			tty_insert_flip_char(port, ch, TTY_NORMAL);
-	}
-
-	spin_unlock(&up->port.lock);
-
-	/* XXX this won't deadlock with lowlat? */
-	tty_flip_buffer_push(port);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t sport_uart_tx_irq(int irq, void *dev_id)
-{
-	struct sport_uart_port *up = dev_id;
-
-	spin_lock(&up->port.lock);
-	sport_uart_tx_chars(up);
-	spin_unlock(&up->port.lock);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t sport_uart_err_irq(int irq, void *dev_id)
-{
-	struct sport_uart_port *up = dev_id;
-	unsigned int stat = SPORT_GET_STAT(up);
-
-	spin_lock(&up->port.lock);
-
-	/* Overflow in RX FIFO */
-	if (stat & ROVF) {
-		up->port.icount.overrun++;
-		tty_insert_flip_char(&up->port.state->port, 0, TTY_OVERRUN);
-		SPORT_PUT_STAT(up, ROVF); /* Clear ROVF bit */
-	}
-	/* These should not happen */
-	if (stat & (TOVF | TUVF | RUVF)) {
-		pr_err("SPORT Error:%s %s %s\n",
-		       (stat & TOVF) ? "TX overflow" : "",
-		       (stat & TUVF) ? "TX underflow" : "",
-		       (stat & RUVF) ? "RX underflow" : "");
-		SPORT_PUT_TCR1(up, SPORT_GET_TCR1(up) & ~TSPEN);
-		SPORT_PUT_RCR1(up, SPORT_GET_RCR1(up) & ~RSPEN);
-	}
-	SSYNC();
-
-	spin_unlock(&up->port.lock);
-	/* XXX we don't push the overrun bit to TTY? */
-
-	return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-static unsigned int sport_get_mctrl(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	if (up->cts_pin < 0)
-		return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-
-	/* CTS PIN is negative assertive. */
-	if (SPORT_UART_GET_CTS(up))
-		return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-	else
-		return TIOCM_DSR | TIOCM_CAR;
-}
-
-static void sport_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	if (up->rts_pin < 0)
-		return;
-
-	/* RTS PIN is negative assertive. */
-	if (mctrl & TIOCM_RTS)
-		SPORT_UART_ENABLE_RTS(up);
-	else
-		SPORT_UART_DISABLE_RTS(up);
-}
-
-/*
- * Handle any change of modem status signal.
- */
-static irqreturn_t sport_mctrl_cts_int(int irq, void *dev_id)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)dev_id;
-	unsigned int status;
-
-	status = sport_get_mctrl(&up->port);
-	uart_handle_cts_change(&up->port, status & TIOCM_CTS);
-
-	return IRQ_HANDLED;
-}
-#else
-static unsigned int sport_get_mctrl(struct uart_port *port)
-{
-	pr_debug("%s enter\n", __func__);
-	return TIOCM_CTS | TIOCM_CD | TIOCM_DSR;
-}
-
-static void sport_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	pr_debug("%s enter\n", __func__);
-}
-#endif
-
-/* Reqeust IRQ, Setup clock */
-static int sport_startup(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	int ret;
-
-	pr_debug("%s enter\n", __func__);
-	ret = request_irq(up->port.irq, sport_uart_rx_irq, 0,
-		"SPORT_UART_RX", up);
-	if (ret) {
-		dev_err(port->dev, "unable to request SPORT RX interrupt\n");
-		return ret;
-	}
-
-	ret = request_irq(up->port.irq+1, sport_uart_tx_irq, 0,
-		"SPORT_UART_TX", up);
-	if (ret) {
-		dev_err(port->dev, "unable to request SPORT TX interrupt\n");
-		goto fail1;
-	}
-
-	ret = request_irq(up->err_irq, sport_uart_err_irq, 0,
-		"SPORT_UART_STATUS", up);
-	if (ret) {
-		dev_err(port->dev, "unable to request SPORT status interrupt\n");
-		goto fail2;
-	}
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-	if (up->cts_pin >= 0) {
-		if (request_irq(gpio_to_irq(up->cts_pin),
-			sport_mctrl_cts_int,
-			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
-			0, "BFIN_SPORT_UART_CTS", up)) {
-			up->cts_pin = -1;
-			dev_info(port->dev, "Unable to attach BlackFin UART over SPORT CTS interrupt. So, disable it.\n");
-		}
-	}
-	if (up->rts_pin >= 0) {
-		if (gpio_request(up->rts_pin, DRV_NAME)) {
-			dev_info(port->dev, "fail to request RTS PIN at GPIO_%d\n", up->rts_pin);
-			up->rts_pin = -1;
-		} else
-			gpio_direction_output(up->rts_pin, 0);
-	}
-#endif
-
-	return 0;
- fail2:
-	free_irq(up->port.irq+1, up);
- fail1:
-	free_irq(up->port.irq, up);
-
-	return ret;
-}
-
-/*
- * sport_uart_tx_chars
- *
- * ret 1 means need to enable sport.
- * ret 0 means do nothing.
- */
-static int sport_uart_tx_chars(struct sport_uart_port *up)
-{
-	struct circ_buf *xmit = &up->port.state->xmit;
-
-	if (SPORT_GET_STAT(up) & TXF)
-		return 0;
-
-	if (up->port.x_char) {
-		tx_one_byte(up, up->port.x_char);
-		up->port.icount.tx++;
-		up->port.x_char = 0;
-		return 1;
-	}
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
-		/* The waiting loop to stop SPORT TX from TX interrupt is
-		 * too long. This may block SPORT RX interrupts and cause
-		 * RX FIFO overflow. So, do stop sport TX only after the last
-		 * char in TX FIFO is moved into the shift register.
-		 */
-		if (SPORT_GET_STAT(up) & TXHRE)
-			sport_stop_tx(&up->port);
-		return 0;
-	}
-
-	while(!(SPORT_GET_STAT(up) & TXF) && !uart_circ_empty(xmit)) {
-		tx_one_byte(up, xmit->buf[xmit->tail]);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE -1);
-		up->port.icount.tx++;
-	}
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(&up->port);
-
-	return 1;
-}
-
-static unsigned int sport_tx_empty(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	unsigned int stat;
-
-	stat = SPORT_GET_STAT(up);
-	pr_debug("%s stat:%04x\n", __func__, stat);
-	if (stat & TXHRE) {
-		return TIOCSER_TEMT;
-	} else
-		return 0;
-}
-
-static void sport_stop_tx(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-
-	if (!(SPORT_GET_TCR1(up) & TSPEN))
-		return;
-
-	/* Although the hold register is empty, last byte is still in shift
-	 * register and not sent out yet. So, put a dummy data into TX FIFO.
-	 * Then, sport tx stops when last byte is shift out and the dummy
-	 * data is moved into the shift register.
-	 */
-	SPORT_PUT_TX(up, 0xffff);
-	while (!(SPORT_GET_STAT(up) & TXHRE))
-		cpu_relax();
-
-	SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) & ~TSPEN));
-	SSYNC();
-
-	return;
-}
-
-static void sport_start_tx(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-
-	/* Write data into SPORT FIFO before enable SPROT to transmit */
-	if (sport_uart_tx_chars(up)) {
-		/* Enable transmit, then an interrupt will generated */
-		SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) | TSPEN));
-		SSYNC();
-	}
-
-	pr_debug("%s exit\n", __func__);
-}
-
-static void sport_stop_rx(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-	/* Disable sport to stop rx */
-	SPORT_PUT_RCR1(up, (SPORT_GET_RCR1(up) & ~RSPEN));
-	SSYNC();
-}
-
-static void sport_break_ctl(struct uart_port *port, int break_state)
-{
-	pr_debug("%s enter\n", __func__);
-}
-
-static void sport_shutdown(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	dev_dbg(port->dev, "%s enter\n", __func__);
-
-	/* Disable sport */
-	SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) & ~TSPEN));
-	SPORT_PUT_RCR1(up, (SPORT_GET_RCR1(up) & ~RSPEN));
-	SSYNC();
-
-	free_irq(up->port.irq, up);
-	free_irq(up->port.irq+1, up);
-	free_irq(up->err_irq, up);
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-	if (up->cts_pin >= 0)
-		free_irq(gpio_to_irq(up->cts_pin), up);
-	if (up->rts_pin >= 0)
-		gpio_free(up->rts_pin);
-#endif
-}
-
-static const char *sport_type(struct uart_port *port)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-	return up->port.type == PORT_BFIN_SPORT ? "BFIN-SPORT-UART" : NULL;
-}
-
-static void sport_release_port(struct uart_port *port)
-{
-	pr_debug("%s enter\n", __func__);
-}
-
-static int sport_request_port(struct uart_port *port)
-{
-	pr_debug("%s enter\n", __func__);
-	return 0;
-}
-
-static void sport_config_port(struct uart_port *port, int flags)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	pr_debug("%s enter\n", __func__);
-	up->port.type = PORT_BFIN_SPORT;
-}
-
-static int sport_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
-	pr_debug("%s enter\n", __func__);
-	return 0;
-}
-
-static void sport_set_termios(struct uart_port *port,
-		struct ktermios *termios, struct ktermios *old)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-	unsigned long flags;
-	int i;
-
-	pr_debug("%s enter, c_cflag:%08x\n", __func__, termios->c_cflag);
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-	if (old == NULL && up->cts_pin != -1)
-		termios->c_cflag |= CRTSCTS;
-	else if (up->cts_pin == -1)
-		termios->c_cflag &= ~CRTSCTS;
-#endif
-
-	switch (termios->c_cflag & CSIZE) {
-	case CS8:
-		up->csize = 8;
-		break;
-	case CS7:
-		up->csize = 7;
-		break;
-	case CS6:
-		up->csize = 6;
-		break;
-	case CS5:
-		up->csize = 5;
-		break;
-	default:
-		pr_warn("requested word length not supported\n");
-		break;
-	}
-
-	if (termios->c_cflag & CSTOPB) {
-		up->stopb = 1;
-	}
-	if (termios->c_cflag & PARENB) {
-		pr_warn("PAREN bit is not supported yet\n");
-		/* up->parib = 1; */
-	}
-
-	spin_lock_irqsave(&up->port.lock, flags);
-
-	port->read_status_mask = 0;
-
-	/*
-	 * Characters to ignore
-	 */
-	port->ignore_status_mask = 0;
-
-	/* RX extract mask */
-	up->rxmask = 0x01 | (((up->csize + up->stopb) * 2 - 1) << 0x8);
-	/* TX masks, 8 bit data and 1 bit stop for example:
-	 * mask1 = b#0111111110
-	 * mask2 = b#1000000000
-	 */
-	for (i = 0, up->txmask1 = 0; i < up->csize; i++)
-		up->txmask1 |= (1<<i);
-	up->txmask2 = (1<<i);
-	if (up->stopb) {
-		++i;
-		up->txmask2 |= (1<<i);
-	}
-	up->txmask1 <<= 1;
-	up->txmask2 <<= 1;
-	/* uart baud rate */
-	port->uartclk = uart_get_baud_rate(port, termios, old, 0, get_sclk()/16);
-
-	/* Disable UART */
-	SPORT_PUT_TCR1(up, SPORT_GET_TCR1(up) & ~TSPEN);
-	SPORT_PUT_RCR1(up, SPORT_GET_RCR1(up) & ~RSPEN);
-
-	sport_uart_setup(up, up->csize + up->stopb, port->uartclk);
-
-	/* driver TX line high after config, one dummy data is
-	 * necessary to stop sport after shift one byte
-	 */
-	SPORT_PUT_TX(up, 0xffff);
-	SPORT_PUT_TX(up, 0xffff);
-	SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) | TSPEN));
-	SSYNC();
-	while (!(SPORT_GET_STAT(up) & TXHRE))
-		cpu_relax();
-	SPORT_PUT_TCR1(up, SPORT_GET_TCR1(up) & ~TSPEN);
-	SSYNC();
-
-	/* Port speed changed, update the per-port timeout. */
-	uart_update_timeout(port, termios->c_cflag, port->uartclk);
-
-	/* Enable sport rx */
-	SPORT_PUT_RCR1(up, SPORT_GET_RCR1(up) | RSPEN);
-	SSYNC();
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static const struct uart_ops sport_uart_ops = {
-	.tx_empty	= sport_tx_empty,
-	.set_mctrl	= sport_set_mctrl,
-	.get_mctrl	= sport_get_mctrl,
-	.stop_tx	= sport_stop_tx,
-	.start_tx	= sport_start_tx,
-	.stop_rx	= sport_stop_rx,
-	.break_ctl	= sport_break_ctl,
-	.startup	= sport_startup,
-	.shutdown	= sport_shutdown,
-	.set_termios	= sport_set_termios,
-	.type		= sport_type,
-	.release_port	= sport_release_port,
-	.request_port	= sport_request_port,
-	.config_port	= sport_config_port,
-	.verify_port	= sport_verify_port,
-};
-
-#define BFIN_SPORT_UART_MAX_PORTS 4
-
-static struct sport_uart_port *bfin_sport_uart_ports[BFIN_SPORT_UART_MAX_PORTS];
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
-#define CLASS_BFIN_SPORT_CONSOLE	"bfin-sport-console"
-
-static int __init
-sport_uart_console_setup(struct console *co, char *options)
-{
-	struct sport_uart_port *up;
-	int baud = 57600;
-	int bits = 8;
-	int parity = 'n';
-# ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-	int flow = 'r';
-# else
-	int flow = 'n';
-# endif
-
-	/* Check whether an invalid uart number has been specified */
-	if (co->index < 0 || co->index >= BFIN_SPORT_UART_MAX_PORTS)
-		return -ENODEV;
-
-	up = bfin_sport_uart_ports[co->index];
-	if (!up)
-		return -ENODEV;
-
-	if (options)
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-
-	return uart_set_options(&up->port, co, baud, parity, bits, flow);
-}
-
-static void sport_uart_console_putchar(struct uart_port *port, int ch)
-{
-	struct sport_uart_port *up = (struct sport_uart_port *)port;
-
-	while (SPORT_GET_STAT(up) & TXF)
-		barrier();
-
-	tx_one_byte(up, ch);
-}
-
-/*
- * Interrupts are disabled on entering
- */
-static void
-sport_uart_console_write(struct console *co, const char *s, unsigned int count)
-{
-	struct sport_uart_port *up = bfin_sport_uart_ports[co->index];
-	unsigned long flags;
-
-	spin_lock_irqsave(&up->port.lock, flags);
-
-	if (SPORT_GET_TCR1(up) & TSPEN)
-		uart_console_write(&up->port, s, count, sport_uart_console_putchar);
-	else {
-		/* dummy data to start sport */
-		while (SPORT_GET_STAT(up) & TXF)
-			barrier();
-		SPORT_PUT_TX(up, 0xffff);
-		/* Enable transmit, then an interrupt will generated */
-		SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) | TSPEN));
-		SSYNC();
-
-		uart_console_write(&up->port, s, count, sport_uart_console_putchar);
-
-		/* Although the hold register is empty, last byte is still in shift
-		 * register and not sent out yet. So, put a dummy data into TX FIFO.
-		 * Then, sport tx stops when last byte is shift out and the dummy
-		 * data is moved into the shift register.
-		 */
-		while (SPORT_GET_STAT(up) & TXF)
-			barrier();
-		SPORT_PUT_TX(up, 0xffff);
-		while (!(SPORT_GET_STAT(up) & TXHRE))
-			barrier();
-
-		/* Stop sport tx transfer */
-		SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) & ~TSPEN));
-		SSYNC();
-	}
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static struct uart_driver sport_uart_reg;
-
-static struct console sport_uart_console = {
-	.name		= DEVICE_NAME,
-	.write		= sport_uart_console_write,
-	.device		= uart_console_device,
-	.setup		= sport_uart_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-	.data		= &sport_uart_reg,
-};
-
-#define SPORT_UART_CONSOLE	(&sport_uart_console)
-#else
-#define SPORT_UART_CONSOLE	NULL
-#endif /* CONFIG_SERIAL_BFIN_SPORT_CONSOLE */
-
-
-static struct uart_driver sport_uart_reg = {
-	.owner		= THIS_MODULE,
-	.driver_name	= DRV_NAME,
-	.dev_name	= DEVICE_NAME,
-	.major		= 204,
-	.minor		= 84,
-	.nr		= BFIN_SPORT_UART_MAX_PORTS,
-	.cons		= SPORT_UART_CONSOLE,
-};
-
-#ifdef CONFIG_PM
-static int sport_uart_suspend(struct device *dev)
-{
-	struct sport_uart_port *sport = dev_get_drvdata(dev);
-
-	dev_dbg(dev, "%s enter\n", __func__);
-	if (sport)
-		uart_suspend_port(&sport_uart_reg, &sport->port);
-
-	return 0;
-}
-
-static int sport_uart_resume(struct device *dev)
-{
-	struct sport_uart_port *sport = dev_get_drvdata(dev);
-
-	dev_dbg(dev, "%s enter\n", __func__);
-	if (sport)
-		uart_resume_port(&sport_uart_reg, &sport->port);
-
-	return 0;
-}
-
-static const struct dev_pm_ops bfin_sport_uart_dev_pm_ops = {
-	.suspend	= sport_uart_suspend,
-	.resume		= sport_uart_resume,
-};
-#endif
-
-static int sport_uart_probe(struct platform_device *pdev)
-{
-	struct resource *res;
-	struct sport_uart_port *sport;
-	int ret = 0;
-
-	dev_dbg(&pdev->dev, "%s enter\n", __func__);
-
-	if (pdev->id < 0 || pdev->id >= BFIN_SPORT_UART_MAX_PORTS) {
-		dev_err(&pdev->dev, "Wrong sport uart platform device id.\n");
-		return -ENOENT;
-	}
-
-	if (bfin_sport_uart_ports[pdev->id] == NULL) {
-		bfin_sport_uart_ports[pdev->id] =
-			kzalloc(sizeof(struct sport_uart_port), GFP_KERNEL);
-		sport = bfin_sport_uart_ports[pdev->id];
-		if (!sport) {
-			dev_err(&pdev->dev,
-				"Fail to malloc sport_uart_port\n");
-			return -ENOMEM;
-		}
-
-		ret = peripheral_request_list(dev_get_platdata(&pdev->dev),
-						DRV_NAME);
-		if (ret) {
-			dev_err(&pdev->dev,
-				"Fail to request SPORT peripherals\n");
-			goto out_error_free_mem;
-		}
-
-		spin_lock_init(&sport->port.lock);
-		sport->port.fifosize  = SPORT_TX_FIFO_SIZE,
-		sport->port.ops       = &sport_uart_ops;
-		sport->port.line      = pdev->id;
-		sport->port.iotype    = UPIO_MEM;
-		sport->port.flags     = UPF_BOOT_AUTOCONF;
-
-		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		if (res == NULL) {
-			dev_err(&pdev->dev, "Cannot get IORESOURCE_MEM\n");
-			ret = -ENOENT;
-			goto out_error_free_peripherals;
-		}
-
-		sport->port.membase = ioremap(res->start, resource_size(res));
-		if (!sport->port.membase) {
-			dev_err(&pdev->dev, "Cannot map sport IO\n");
-			ret = -ENXIO;
-			goto out_error_free_peripherals;
-		}
-		sport->port.mapbase = res->start;
-
-		sport->port.irq = platform_get_irq(pdev, 0);
-		if ((int)sport->port.irq < 0) {
-			dev_err(&pdev->dev, "No sport RX/TX IRQ specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-
-		sport->err_irq = platform_get_irq(pdev, 1);
-		if (sport->err_irq < 0) {
-			dev_err(&pdev->dev, "No sport status IRQ specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-		if (res == NULL)
-			sport->cts_pin = -1;
-		else
-			sport->cts_pin = res->start;
-
-		res = platform_get_resource(pdev, IORESOURCE_IO, 1);
-		if (res == NULL)
-			sport->rts_pin = -1;
-		else
-			sport->rts_pin = res->start;
-#endif
-	}
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
-	if (!is_early_platform_device(pdev)) {
-#endif
-		sport = bfin_sport_uart_ports[pdev->id];
-		sport->port.dev = &pdev->dev;
-		dev_set_drvdata(&pdev->dev, sport);
-		ret = uart_add_one_port(&sport_uart_reg, &sport->port);
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
-	}
-#endif
-	if (!ret)
-		return 0;
-
-	if (sport) {
-out_error_unmap:
-		iounmap(sport->port.membase);
-out_error_free_peripherals:
-		peripheral_free_list(dev_get_platdata(&pdev->dev));
-out_error_free_mem:
-		kfree(sport);
-		bfin_sport_uart_ports[pdev->id] = NULL;
-	}
-
-	return ret;
-}
-
-static int sport_uart_remove(struct platform_device *pdev)
-{
-	struct sport_uart_port *sport = platform_get_drvdata(pdev);
-
-	dev_dbg(&pdev->dev, "%s enter\n", __func__);
-	dev_set_drvdata(&pdev->dev, NULL);
-
-	if (sport) {
-		uart_remove_one_port(&sport_uart_reg, &sport->port);
-		iounmap(sport->port.membase);
-		peripheral_free_list(dev_get_platdata(&pdev->dev));
-		kfree(sport);
-		bfin_sport_uart_ports[pdev->id] = NULL;
-	}
-
-	return 0;
-}
-
-static struct platform_driver sport_uart_driver = {
-	.probe		= sport_uart_probe,
-	.remove		= sport_uart_remove,
-	.driver		= {
-		.name	= DRV_NAME,
-#ifdef CONFIG_PM
-		.pm	= &bfin_sport_uart_dev_pm_ops,
-#endif
-	},
-};
-
-#ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
-static struct early_platform_driver early_sport_uart_driver __initdata = {
-	.class_str = CLASS_BFIN_SPORT_CONSOLE,
-	.pdrv = &sport_uart_driver,
-	.requested_id = EARLY_PLATFORM_ID_UNSET,
-};
-
-static int __init sport_uart_rs_console_init(void)
-{
-	early_platform_driver_register(&early_sport_uart_driver, DRV_NAME);
-
-	early_platform_driver_probe(CLASS_BFIN_SPORT_CONSOLE,
-		BFIN_SPORT_UART_MAX_PORTS, 0);
-
-	register_console(&sport_uart_console);
-
-	return 0;
-}
-console_initcall(sport_uart_rs_console_init);
-#endif
-
-static int __init sport_uart_init(void)
-{
-	int ret;
-
-	pr_info("Blackfin uart over sport driver\n");
-
-	ret = uart_register_driver(&sport_uart_reg);
-	if (ret) {
-		pr_err("failed to register %s:%d\n",
-				sport_uart_reg.driver_name, ret);
-		return ret;
-	}
-
-	ret = platform_driver_register(&sport_uart_driver);
-	if (ret) {
-		pr_err("failed to register sport uart driver:%d\n", ret);
-		uart_unregister_driver(&sport_uart_reg);
-	}
-
-	return ret;
-}
-module_init(sport_uart_init);
-
-static void __exit sport_uart_exit(void)
-{
-	platform_driver_unregister(&sport_uart_driver);
-	uart_unregister_driver(&sport_uart_reg);
-}
-module_exit(sport_uart_exit);
-
-MODULE_AUTHOR("Sonic Zhang, Roy Huang");
-MODULE_DESCRIPTION("Blackfin serial over SPORT driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/bfin_sport_uart.h b/drivers/tty/serial/bfin_sport_uart.h
deleted file mode 100644
index 4b12f45d6580..000000000000
--- a/drivers/tty/serial/bfin_sport_uart.h
+++ /dev/null
@@ -1,86 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Blackfin On-Chip Sport Emulated UART Driver
- *
- * Copyright 2006-2008 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-/*
- * This driver and the hardware supported are in term of EE-191 of ADI.
- * http://www.analog.com/static/imported-files/application_notes/EE191.pdf 
- * This application note describe how to implement a UART on a Sharc DSP,
- * but this driver is implemented on Blackfin Processor.
- * Transmit Frame Sync is not used by this driver to transfer data out.
- */
-
-#ifndef _BFIN_SPORT_UART_H
-#define _BFIN_SPORT_UART_H
-
-#define OFFSET_TCR1		0x00	/* Transmit Configuration 1 Register */
-#define OFFSET_TCR2		0x04	/* Transmit Configuration 2 Register */
-#define OFFSET_TCLKDIV		0x08	/* Transmit Serial Clock Divider Register */
-#define OFFSET_TFSDIV		0x0C	/* Transmit Frame Sync Divider Register */
-#define OFFSET_TX		0x10	/* Transmit Data Register		*/
-#define OFFSET_RX		0x18	/* Receive Data Register		*/
-#define OFFSET_RCR1		0x20	/* Receive Configuration 1 Register	*/
-#define OFFSET_RCR2		0x24	/* Receive Configuration 2 Register	*/
-#define OFFSET_RCLKDIV		0x28	/* Receive Serial Clock Divider Register */
-#define OFFSET_RFSDIV		0x2c	/* Receive Frame Sync Divider Register */
-#define OFFSET_STAT		0x30	/* Status Register			*/
-
-#define SPORT_GET_TCR1(sport)		bfin_read16(((sport)->port.membase + OFFSET_TCR1))
-#define SPORT_GET_TCR2(sport)		bfin_read16(((sport)->port.membase + OFFSET_TCR2))
-#define SPORT_GET_TCLKDIV(sport)	bfin_read16(((sport)->port.membase + OFFSET_TCLKDIV))
-#define SPORT_GET_TFSDIV(sport)		bfin_read16(((sport)->port.membase + OFFSET_TFSDIV))
-#define SPORT_GET_TX(sport)		bfin_read16(((sport)->port.membase + OFFSET_TX))
-#define SPORT_GET_RX(sport)		bfin_read16(((sport)->port.membase + OFFSET_RX))
-/*
- * If another interrupt fires while doing a 32-bit read from RX FIFO,
- * a fake RX underflow error will be generated.  So disable interrupts
- * to prevent interruption while reading the FIFO.
- */
-#define SPORT_GET_RX32(sport) \
-({ \
-	unsigned int __ret; \
-	unsigned long flags; \
-	if (ANOMALY_05000473) \
-		local_irq_save(flags); \
-	__ret = bfin_read32((sport)->port.membase + OFFSET_RX); \
-	if (ANOMALY_05000473) \
-		local_irq_restore(flags); \
-	__ret; \
-})
-#define SPORT_GET_RCR1(sport)		bfin_read16(((sport)->port.membase + OFFSET_RCR1))
-#define SPORT_GET_RCR2(sport)		bfin_read16(((sport)->port.membase + OFFSET_RCR2))
-#define SPORT_GET_RCLKDIV(sport)	bfin_read16(((sport)->port.membase + OFFSET_RCLKDIV))
-#define SPORT_GET_RFSDIV(sport)		bfin_read16(((sport)->port.membase + OFFSET_RFSDIV))
-#define SPORT_GET_STAT(sport)		bfin_read16(((sport)->port.membase + OFFSET_STAT))
-
-#define SPORT_PUT_TCR1(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_TCR1), v)
-#define SPORT_PUT_TCR2(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_TCR2), v)
-#define SPORT_PUT_TCLKDIV(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_TCLKDIV), v)
-#define SPORT_PUT_TFSDIV(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_TFSDIV), v)
-#define SPORT_PUT_TX(sport, v)		bfin_write16(((sport)->port.membase + OFFSET_TX), v)
-#define SPORT_PUT_RX(sport, v)		bfin_write16(((sport)->port.membase + OFFSET_RX), v)
-#define SPORT_PUT_RCR1(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_RCR1), v)
-#define SPORT_PUT_RCR2(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_RCR2), v)
-#define SPORT_PUT_RCLKDIV(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_RCLKDIV), v)
-#define SPORT_PUT_RFSDIV(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_RFSDIV), v)
-#define SPORT_PUT_STAT(sport, v)	bfin_write16(((sport)->port.membase + OFFSET_STAT), v)
-
-#define SPORT_TX_FIFO_SIZE	8
-
-#define SPORT_UART_GET_CTS(x)		gpio_get_value(x->cts_pin)
-#define SPORT_UART_DISABLE_RTS(x)	gpio_set_value(x->rts_pin, 1)
-#define SPORT_UART_ENABLE_RTS(x)	gpio_set_value(x->rts_pin, 0)
-
-#if defined(CONFIG_SERIAL_BFIN_SPORT0_UART_CTSRTS) \
-	|| defined(CONFIG_SERIAL_BFIN_SPORT1_UART_CTSRTS) \
-	|| defined(CONFIG_SERIAL_BFIN_SPORT2_UART_CTSRTS) \
-	|| defined(CONFIG_SERIAL_BFIN_SPORT3_UART_CTSRTS)
-# define CONFIG_SERIAL_BFIN_SPORT_CTSRTS
-#endif
-
-#endif /* _BFIN_SPORT_UART_H */
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
deleted file mode 100644
index 4755fa696321..000000000000
--- a/drivers/tty/serial/bfin_uart.c
+++ /dev/null
@@ -1,1551 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Blackfin On-Chip Serial Driver
- *
- * Copyright 2006-2011 Analog Devices Inc.
- *
- * Enter bugs at http://blackfin.uclinux.org/
- */
-
-#if defined(CONFIG_SERIAL_BFIN_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#define DRIVER_NAME "bfin-uart"
-#define pr_fmt(fmt) DRIVER_NAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/ioport.h>
-#include <linux/gfp.h>
-#include <linux/io.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/platform_device.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_core.h>
-#include <linux/gpio.h>
-#include <linux/irq.h>
-#include <linux/kgdb.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-
-#include <asm/portmux.h>
-#include <asm/cacheflush.h>
-#include <asm/dma.h>
-#include <asm/bfin_serial.h>
-
-#ifdef CONFIG_SERIAL_BFIN_MODULE
-# undef CONFIG_EARLY_PRINTK
-#endif
-
-/* UART name and device definitions */
-#define BFIN_SERIAL_DEV_NAME	"ttyBF"
-#define BFIN_SERIAL_MAJOR	204
-#define BFIN_SERIAL_MINOR	64
-
-static struct bfin_serial_port *bfin_serial_ports[BFIN_UART_NR_PORTS];
-
-#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
-	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
-
-# ifndef CONFIG_SERIAL_BFIN_PIO
-#  error KGDB only support UART in PIO mode.
-# endif
-
-static int kgdboc_port_line;
-static int kgdboc_break_enabled;
-#endif
-/*
- * Setup for console. Argument comes from the menuconfig
- */
-#define DMA_RX_XCOUNT		512
-#define DMA_RX_YCOUNT		(PAGE_SIZE / DMA_RX_XCOUNT)
-
-#define DMA_RX_FLUSH_JIFFIES	(HZ / 50)
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart);
-#else
-static void bfin_serial_tx_chars(struct bfin_serial_port *uart);
-#endif
-
-static void bfin_serial_reset_irda(struct uart_port *port);
-
-#if defined(SERIAL_BFIN_CTSRTS) || \
-	defined(SERIAL_BFIN_HARD_CTSRTS)
-static unsigned int bfin_serial_get_mctrl(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	if (uart->cts_pin < 0)
-		return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-
-	/* CTS PIN is negative assertive. */
-	if (UART_GET_CTS(uart))
-		return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-	else
-		return TIOCM_DSR | TIOCM_CAR;
-}
-
-static void bfin_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	if (uart->rts_pin < 0)
-		return;
-
-	/* RTS PIN is negative assertive. */
-	if (mctrl & TIOCM_RTS)
-		UART_ENABLE_RTS(uart);
-	else
-		UART_DISABLE_RTS(uart);
-}
-
-/*
- * Handle any change of modem status signal.
- */
-static irqreturn_t bfin_serial_mctrl_cts_int(int irq, void *dev_id)
-{
-	struct bfin_serial_port *uart = dev_id;
-	struct uart_port *uport = &uart->port;
-	unsigned int status = bfin_serial_get_mctrl(uport);
-#ifdef SERIAL_BFIN_HARD_CTSRTS
-
-	UART_CLEAR_SCTS(uart);
-	if (uport->hw_stopped) {
-		if (status) {
-			uport->hw_stopped = 0;
-			uart_write_wakeup(uport);
-		}
-	} else {
-		if (!status)
-			uport->hw_stopped = 1;
-	}
-#else
-	uart_handle_cts_change(uport, status & TIOCM_CTS);
-#endif
-
-	return IRQ_HANDLED;
-}
-#else
-static unsigned int bfin_serial_get_mctrl(struct uart_port *port)
-{
-	return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-}
-
-static void bfin_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-}
-#endif
-
-/*
- * interrupts are disabled on entry
- */
-static void bfin_serial_stop_tx(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	struct circ_buf *xmit = &uart->port.state->xmit;
-#endif
-
-	while (!(UART_GET_LSR(uart) & TEMT))
-		cpu_relax();
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	disable_dma(uart->tx_dma_channel);
-	xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
-	uart->port.icount.tx += uart->tx_count;
-	uart->tx_count = 0;
-	uart->tx_done = 1;
-#else
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
-	/* Clear TFI bit */
-	UART_PUT_LSR(uart, TFI);
-#endif
-	UART_CLEAR_IER(uart, ETBEI);
-#endif
-}
-
-/*
- * port is locked and interrupts are disabled
- */
-static void bfin_serial_start_tx(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	struct tty_struct *tty = uart->port.state->port.tty;
-
-	/*
-	 * To avoid losting RX interrupt, we reset IR function
-	 * before sending data.
-	 */
-	if (tty->termios.c_line == N_IRDA)
-		bfin_serial_reset_irda(port);
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	if (uart->tx_done)
-		bfin_serial_dma_tx_chars(uart);
-#else
-	UART_SET_IER(uart, ETBEI);
-	bfin_serial_tx_chars(uart);
-#endif
-}
-
-/*
- * Interrupts are enabled
- */
-static void bfin_serial_stop_rx(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-	UART_CLEAR_IER(uart, ERBFI);
-}
-
-#if ANOMALY_05000363 && defined(CONFIG_SERIAL_BFIN_PIO)
-# define UART_GET_ANOMALY_THRESHOLD(uart)    ((uart)->anomaly_threshold)
-# define UART_SET_ANOMALY_THRESHOLD(uart, v) ((uart)->anomaly_threshold = (v))
-#else
-# define UART_GET_ANOMALY_THRESHOLD(uart)    0
-# define UART_SET_ANOMALY_THRESHOLD(uart, v)
-#endif
-
-#ifdef CONFIG_SERIAL_BFIN_PIO
-static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
-{
-	unsigned int status, ch, flg;
-	static u64 anomaly_start;
-
-	status = UART_GET_LSR(uart);
-	UART_CLEAR_LSR(uart);
-
-	ch = UART_GET_CHAR(uart);
-	uart->port.icount.rx++;
-
-#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
-	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
-	if (kgdb_connected && kgdboc_port_line == uart->port.line
-		&& kgdboc_break_enabled)
-		if (ch == 0x3) {/* Ctrl + C */
-			kgdb_breakpoint();
-			return;
-		}
-
-	if (!uart->port.state)
-		return;
-#endif
-	if (ANOMALY_05000363) {
-		/* The BF533 (and BF561) family of processors have a nice anomaly
-		 * where they continuously generate characters for a "single" break.
-		 * We have to basically ignore this flood until the "next" valid
-		 * character comes across.  Due to the nature of the flood, it is
-		 * not possible to reliably catch bytes that are sent too quickly
-		 * after this break.  So application code talking to the Blackfin
-		 * which sends a break signal must allow at least 1.5 character
-		 * times after the end of the break for things to stabilize.  This
-		 * timeout was picked as it must absolutely be larger than 1
-		 * character time +/- some percent.  So 1.5 sounds good.  All other
-		 * Blackfin families operate properly.  Woo.
-		 */
-		if (anomaly_start > 0) {
-			u64 curr, nsecs, threshold_ns;
-
-			if ((~ch & (~ch + 1)) & 0xff)
-				goto known_good_char;
-
-			curr = ktime_get_ns();
-			nsecs = curr - anomaly_start;
-			if (nsecs >> 32)
-				goto known_good_char;
-
-			threshold_ns = UART_GET_ANOMALY_THRESHOLD(uart)
-							* NSEC_PER_USEC;
-			if (nsecs > threshold_ns)
-				goto known_good_char;
-
-			if (ch)
-				anomaly_start = 0;
-			else
-				anomaly_start = curr;
-
-			return;
-
- known_good_char:
-			status &= ~BI;
-			anomaly_start = 0;
-		}
-	}
-
-	if (status & BI) {
-		if (ANOMALY_05000363)
-			if (bfin_revid() < 5)
-				anomaly_start = ktime_get_ns();
-		uart->port.icount.brk++;
-		if (uart_handle_break(&uart->port))
-			goto ignore_char;
-		status &= ~(PE | FE);
-	}
-	if (status & PE)
-		uart->port.icount.parity++;
-	if (status & OE)
-		uart->port.icount.overrun++;
-	if (status & FE)
-		uart->port.icount.frame++;
-
-	status &= uart->port.read_status_mask;
-
-	if (status & BI)
-		flg = TTY_BREAK;
-	else if (status & PE)
-		flg = TTY_PARITY;
-	else if (status & FE)
-		flg = TTY_FRAME;
-	else
-		flg = TTY_NORMAL;
-
-	if (uart_handle_sysrq_char(&uart->port, ch))
-		goto ignore_char;
-
-	uart_insert_char(&uart->port, status, OE, ch, flg);
-
- ignore_char:
-	tty_flip_buffer_push(&uart->port.state->port);
-}
-
-static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
-{
-	struct circ_buf *xmit = &uart->port.state->xmit;
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
-		/* Clear TFI bit */
-		UART_PUT_LSR(uart, TFI);
-#endif
-		/* Anomaly notes:
-		 *  05000215 -	we always clear ETBEI within last UART TX
-		 *		interrupt to end a string. It is always set
-		 *		when start a new tx.
-		 */
-		UART_CLEAR_IER(uart, ETBEI);
-		return;
-	}
-
-	if (uart->port.x_char) {
-		UART_PUT_CHAR(uart, uart->port.x_char);
-		uart->port.icount.tx++;
-		uart->port.x_char = 0;
-	}
-
-	while ((UART_GET_LSR(uart) & THRE) && xmit->tail != xmit->head) {
-		UART_PUT_CHAR(uart, xmit->buf[xmit->tail]);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		uart->port.icount.tx++;
-	}
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(&uart->port);
-}
-
-static irqreturn_t bfin_serial_rx_int(int irq, void *dev_id)
-{
-	struct bfin_serial_port *uart = dev_id;
-
-	while (UART_GET_LSR(uart) & DR)
-		bfin_serial_rx_chars(uart);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t bfin_serial_tx_int(int irq, void *dev_id)
-{
-	struct bfin_serial_port *uart = dev_id;
-
-	spin_lock(&uart->port.lock);
-	if (UART_GET_LSR(uart) & THRE)
-		bfin_serial_tx_chars(uart);
-	spin_unlock(&uart->port.lock);
-
-	return IRQ_HANDLED;
-}
-#endif
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
-{
-	struct circ_buf *xmit = &uart->port.state->xmit;
-
-	uart->tx_done = 0;
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
-		uart->tx_count = 0;
-		uart->tx_done = 1;
-		return;
-	}
-
-	if (uart->port.x_char) {
-		UART_PUT_CHAR(uart, uart->port.x_char);
-		uart->port.icount.tx++;
-		uart->port.x_char = 0;
-	}
-
-	uart->tx_count = CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE);
-	if (uart->tx_count > (UART_XMIT_SIZE - xmit->tail))
-		uart->tx_count = UART_XMIT_SIZE - xmit->tail;
-	blackfin_dcache_flush_range((unsigned long)(xmit->buf+xmit->tail),
-					(unsigned long)(xmit->buf+xmit->tail+uart->tx_count));
-	set_dma_config(uart->tx_dma_channel,
-		set_bfin_dma_config(DIR_READ, DMA_FLOW_STOP,
-			INTR_ON_BUF,
-			DIMENSION_LINEAR,
-			DATA_SIZE_8,
-			DMA_SYNC_RESTART));
-	set_dma_start_addr(uart->tx_dma_channel, (unsigned long)(xmit->buf+xmit->tail));
-	set_dma_x_count(uart->tx_dma_channel, uart->tx_count);
-	set_dma_x_modify(uart->tx_dma_channel, 1);
-	SSYNC();
-	enable_dma(uart->tx_dma_channel);
-
-	UART_SET_IER(uart, ETBEI);
-}
-
-static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart)
-{
-	int i, flg, status;
-
-	status = UART_GET_LSR(uart);
-	UART_CLEAR_LSR(uart);
-
-	uart->port.icount.rx +=
-		CIRC_CNT(uart->rx_dma_buf.head, uart->rx_dma_buf.tail,
-		UART_XMIT_SIZE);
-
-	if (status & BI) {
-		uart->port.icount.brk++;
-		if (uart_handle_break(&uart->port))
-			goto dma_ignore_char;
-		status &= ~(PE | FE);
-	}
-	if (status & PE)
-		uart->port.icount.parity++;
-	if (status & OE)
-		uart->port.icount.overrun++;
-	if (status & FE)
-		uart->port.icount.frame++;
-
-	status &= uart->port.read_status_mask;
-
-	if (status & BI)
-		flg = TTY_BREAK;
-	else if (status & PE)
-		flg = TTY_PARITY;
-	else if (status & FE)
-		flg = TTY_FRAME;
-	else
-		flg = TTY_NORMAL;
-
-	for (i = uart->rx_dma_buf.tail; ; i++) {
-		if (i >= UART_XMIT_SIZE)
-			i = 0;
-		if (i == uart->rx_dma_buf.head)
-			break;
-		if (!uart_handle_sysrq_char(&uart->port, uart->rx_dma_buf.buf[i]))
-			uart_insert_char(&uart->port, status, OE,
-				uart->rx_dma_buf.buf[i], flg);
-	}
-
- dma_ignore_char:
-	tty_flip_buffer_push(&uart->port.state->port);
-}
-
-void bfin_serial_rx_dma_timeout(struct timer_list *t)
-{
-	struct bfin_serial_port *uart = from_timer(uart, t, rx_dma_timer);
-	int x_pos, pos;
-	unsigned long flags;
-
-	dma_disable_irq_nosync(uart->rx_dma_channel);
-	spin_lock_irqsave(&uart->rx_lock, flags);
-
-	/* 2D DMA RX buffer ring is used. Because curr_y_count and
-	 * curr_x_count can't be read as an atomic operation,
-	 * curr_y_count should be read before curr_x_count. When
-	 * curr_x_count is read, curr_y_count may already indicate
-	 * next buffer line. But, the position calculated here is
-	 * still indicate the old line. The wrong position data may
-	 * be smaller than current buffer tail, which cause garbages
-	 * are received if it is not prohibit.
-	 */
-	uart->rx_dma_nrows = get_dma_curr_ycount(uart->rx_dma_channel);
-	x_pos = get_dma_curr_xcount(uart->rx_dma_channel);
-	uart->rx_dma_nrows = DMA_RX_YCOUNT - uart->rx_dma_nrows;
-	if (uart->rx_dma_nrows == DMA_RX_YCOUNT || x_pos == 0)
-		uart->rx_dma_nrows = 0;
-	x_pos = DMA_RX_XCOUNT - x_pos;
-	if (x_pos == DMA_RX_XCOUNT)
-		x_pos = 0;
-
-	pos = uart->rx_dma_nrows * DMA_RX_XCOUNT + x_pos;
-	/* Ignore receiving data if new position is in the same line of
-	 * current buffer tail and small.
-	 */
-	if (pos > uart->rx_dma_buf.tail ||
-		uart->rx_dma_nrows < (uart->rx_dma_buf.tail/DMA_RX_XCOUNT)) {
-		uart->rx_dma_buf.head = pos;
-		bfin_serial_dma_rx_chars(uart);
-		uart->rx_dma_buf.tail = uart->rx_dma_buf.head;
-	}
-
-	spin_unlock_irqrestore(&uart->rx_lock, flags);
-	dma_enable_irq(uart->rx_dma_channel);
-
-	mod_timer(&(uart->rx_dma_timer), jiffies + DMA_RX_FLUSH_JIFFIES);
-}
-
-static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
-{
-	struct bfin_serial_port *uart = dev_id;
-	struct circ_buf *xmit = &uart->port.state->xmit;
-
-	spin_lock(&uart->port.lock);
-	if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) {
-		disable_dma(uart->tx_dma_channel);
-		clear_dma_irqstat(uart->tx_dma_channel);
-		/* Anomaly notes:
-		 *  05000215 -	we always clear ETBEI within last UART TX
-		 *		interrupt to end a string. It is always set
-		 *		when start a new tx.
-		 */
-		UART_CLEAR_IER(uart, ETBEI);
-		uart->port.icount.tx += uart->tx_count;
-		if (!(xmit->tail == 0 && xmit->head == 0)) {
-			xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);
-
-			if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-				uart_write_wakeup(&uart->port);
-		}
-
-		bfin_serial_dma_tx_chars(uart);
-	}
-
-	spin_unlock(&uart->port.lock);
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t bfin_serial_dma_rx_int(int irq, void *dev_id)
-{
-	struct bfin_serial_port *uart = dev_id;
-	unsigned int irqstat;
-	int x_pos, pos;
-
-	spin_lock(&uart->rx_lock);
-	irqstat = get_dma_curr_irqstat(uart->rx_dma_channel);
-	clear_dma_irqstat(uart->rx_dma_channel);
-
-	uart->rx_dma_nrows = get_dma_curr_ycount(uart->rx_dma_channel);
-	x_pos = get_dma_curr_xcount(uart->rx_dma_channel);
-	uart->rx_dma_nrows = DMA_RX_YCOUNT - uart->rx_dma_nrows;
-	if (uart->rx_dma_nrows == DMA_RX_YCOUNT || x_pos == 0)
-		uart->rx_dma_nrows = 0;
-
-	pos = uart->rx_dma_nrows * DMA_RX_XCOUNT;
-	if (pos > uart->rx_dma_buf.tail ||
-		uart->rx_dma_nrows < (uart->rx_dma_buf.tail/DMA_RX_XCOUNT)) {
-		uart->rx_dma_buf.head = pos;
-		bfin_serial_dma_rx_chars(uart);
-		uart->rx_dma_buf.tail = uart->rx_dma_buf.head;
-	}
-
-	spin_unlock(&uart->rx_lock);
-
-	return IRQ_HANDLED;
-}
-#endif
-
-/*
- * Return TIOCSER_TEMT when transmitter is not busy.
- */
-static unsigned int bfin_serial_tx_empty(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned int lsr;
-
-	lsr = UART_GET_LSR(uart);
-	if (lsr & TEMT)
-		return TIOCSER_TEMT;
-	else
-		return 0;
-}
-
-static void bfin_serial_break_ctl(struct uart_port *port, int break_state)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	u32 lcr = UART_GET_LCR(uart);
-	if (break_state)
-		lcr |= SB;
-	else
-		lcr &= ~SB;
-	UART_PUT_LCR(uart, lcr);
-	SSYNC();
-}
-
-static int bfin_serial_startup(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	dma_addr_t dma_handle;
-
-	if (request_dma(uart->rx_dma_channel, "BFIN_UART_RX") < 0) {
-		printk(KERN_NOTICE "Unable to attach Blackfin UART RX DMA channel\n");
-		return -EBUSY;
-	}
-
-	if (request_dma(uart->tx_dma_channel, "BFIN_UART_TX") < 0) {
-		printk(KERN_NOTICE "Unable to attach Blackfin UART TX DMA channel\n");
-		free_dma(uart->rx_dma_channel);
-		return -EBUSY;
-	}
-
-	set_dma_callback(uart->rx_dma_channel, bfin_serial_dma_rx_int, uart);
-	set_dma_callback(uart->tx_dma_channel, bfin_serial_dma_tx_int, uart);
-
-	uart->rx_dma_buf.buf = (unsigned char *)dma_alloc_coherent(NULL, PAGE_SIZE, &dma_handle, GFP_DMA);
-	uart->rx_dma_buf.head = 0;
-	uart->rx_dma_buf.tail = 0;
-	uart->rx_dma_nrows = 0;
-
-	set_dma_config(uart->rx_dma_channel,
-		set_bfin_dma_config(DIR_WRITE, DMA_FLOW_AUTO,
-				INTR_ON_ROW, DIMENSION_2D,
-				DATA_SIZE_8,
-				DMA_SYNC_RESTART));
-	set_dma_x_count(uart->rx_dma_channel, DMA_RX_XCOUNT);
-	set_dma_x_modify(uart->rx_dma_channel, 1);
-	set_dma_y_count(uart->rx_dma_channel, DMA_RX_YCOUNT);
-	set_dma_y_modify(uart->rx_dma_channel, 1);
-	set_dma_start_addr(uart->rx_dma_channel, (unsigned long)uart->rx_dma_buf.buf);
-	enable_dma(uart->rx_dma_channel);
-
-	uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES;
-	add_timer(&(uart->rx_dma_timer));
-#else
-# if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
-	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
-	if (kgdboc_port_line == uart->port.line && kgdboc_break_enabled)
-		kgdboc_break_enabled = 0;
-	else {
-# endif
-	if (request_irq(uart->rx_irq, bfin_serial_rx_int, 0,
-	     "BFIN_UART_RX", uart)) {
-		printk(KERN_NOTICE "Unable to attach BlackFin UART RX interrupt\n");
-		return -EBUSY;
-	}
-
-	if (request_irq
-	    (uart->tx_irq, bfin_serial_tx_int, 0,
-	     "BFIN_UART_TX", uart)) {
-		printk(KERN_NOTICE "Unable to attach BlackFin UART TX interrupt\n");
-		free_irq(uart->rx_irq, uart);
-		return -EBUSY;
-	}
-
-# ifdef CONFIG_BF54x
-	{
-		/*
-		 * UART2 and UART3 on BF548 share interrupt PINs and DMA
-		 * controllers with SPORT2 and SPORT3. UART rx and tx
-		 * interrupts are generated in PIO mode only when configure
-		 * their peripheral mapping registers properly, which means
-		 * request corresponding DMA channels in PIO mode as well.
-		 */
-		unsigned uart_dma_ch_rx, uart_dma_ch_tx;
-
-		switch (uart->rx_irq) {
-		case IRQ_UART3_RX:
-			uart_dma_ch_rx = CH_UART3_RX;
-			uart_dma_ch_tx = CH_UART3_TX;
-			break;
-		case IRQ_UART2_RX:
-			uart_dma_ch_rx = CH_UART2_RX;
-			uart_dma_ch_tx = CH_UART2_TX;
-			break;
-		default:
-			uart_dma_ch_rx = uart_dma_ch_tx = 0;
-			break;
-		}
-
-		if (uart_dma_ch_rx &&
-			request_dma(uart_dma_ch_rx, "BFIN_UART_RX") < 0) {
-			printk(KERN_NOTICE"Fail to attach UART interrupt\n");
-			free_irq(uart->rx_irq, uart);
-			free_irq(uart->tx_irq, uart);
-			return -EBUSY;
-		}
-		if (uart_dma_ch_tx &&
-			request_dma(uart_dma_ch_tx, "BFIN_UART_TX") < 0) {
-			printk(KERN_NOTICE "Fail to attach UART interrupt\n");
-			free_dma(uart_dma_ch_rx);
-			free_irq(uart->rx_irq, uart);
-			free_irq(uart->tx_irq, uart);
-			return -EBUSY;
-		}
-	}
-# endif
-# if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
-	defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
-	}
-# endif
-#endif
-
-#ifdef SERIAL_BFIN_CTSRTS
-	if (uart->cts_pin >= 0) {
-		if (request_irq(gpio_to_irq(uart->cts_pin),
-			bfin_serial_mctrl_cts_int,
-			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
-			0, "BFIN_UART_CTS", uart)) {
-			uart->cts_pin = -1;
-			pr_info("Unable to attach BlackFin UART CTS interrupt. So, disable it.\n");
-		}
-	}
-	if (uart->rts_pin >= 0) {
-		if (gpio_request(uart->rts_pin, DRIVER_NAME)) {
-			pr_info("fail to request RTS PIN at GPIO_%d\n", uart->rts_pin);
-			uart->rts_pin = -1;
-		} else
-			gpio_direction_output(uart->rts_pin, 0);
-	}
-#endif
-#ifdef SERIAL_BFIN_HARD_CTSRTS
-	if (uart->cts_pin >= 0) {
-		if (request_irq(uart->status_irq, bfin_serial_mctrl_cts_int,
-			0, "BFIN_UART_MODEM_STATUS", uart)) {
-			uart->cts_pin = -1;
-			dev_info(port->dev, "Unable to attach BlackFin UART Modem Status interrupt.\n");
-		}
-
-		/* CTS RTS PINs are negative assertive. */
-		UART_PUT_MCR(uart, UART_GET_MCR(uart) | ACTS);
-		UART_SET_IER(uart, EDSSI);
-	}
-#endif
-
-	UART_SET_IER(uart, ERBFI);
-	return 0;
-}
-
-static void bfin_serial_shutdown(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-	disable_dma(uart->tx_dma_channel);
-	free_dma(uart->tx_dma_channel);
-	disable_dma(uart->rx_dma_channel);
-	free_dma(uart->rx_dma_channel);
-	del_timer(&(uart->rx_dma_timer));
-	dma_free_coherent(NULL, PAGE_SIZE, uart->rx_dma_buf.buf, 0);
-#else
-#ifdef CONFIG_BF54x
-	switch (uart->port.irq) {
-	case IRQ_UART3_RX:
-		free_dma(CH_UART3_RX);
-		free_dma(CH_UART3_TX);
-		break;
-	case IRQ_UART2_RX:
-		free_dma(CH_UART2_RX);
-		free_dma(CH_UART2_TX);
-		break;
-	default:
-		break;
-	}
-#endif
-	free_irq(uart->rx_irq, uart);
-	free_irq(uart->tx_irq, uart);
-#endif
-
-#ifdef SERIAL_BFIN_CTSRTS
-	if (uart->cts_pin >= 0)
-		free_irq(gpio_to_irq(uart->cts_pin), uart);
-	if (uart->rts_pin >= 0)
-		gpio_free(uart->rts_pin);
-#endif
-#ifdef SERIAL_BFIN_HARD_CTSRTS
-	if (uart->cts_pin >= 0)
-		free_irq(uart->status_irq, uart);
-#endif
-}
-
-static void
-bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
-		   struct ktermios *old)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned long flags;
-	unsigned int baud, quot;
-	unsigned int ier, lcr = 0;
-	unsigned long timeout;
-
-#ifdef SERIAL_BFIN_CTSRTS
-	if (old == NULL && uart->cts_pin != -1)
-		termios->c_cflag |= CRTSCTS;
-	else if (uart->cts_pin == -1)
-		termios->c_cflag &= ~CRTSCTS;
-#endif
-
-	switch (termios->c_cflag & CSIZE) {
-	case CS8:
-		lcr = WLS(8);
-		break;
-	case CS7:
-		lcr = WLS(7);
-		break;
-	case CS6:
-		lcr = WLS(6);
-		break;
-	case CS5:
-		lcr = WLS(5);
-		break;
-	default:
-		printk(KERN_ERR "%s: word length not supported\n",
-			__func__);
-	}
-
-	/* Anomaly notes:
-	 *  05000231 -  STOP bit is always set to 1 whatever the user is set.
-	 */
-	if (termios->c_cflag & CSTOPB) {
-		if (ANOMALY_05000231)
-			printk(KERN_WARNING "STOP bits other than 1 is not "
-				"supported in case of anomaly 05000231.\n");
-		else
-			lcr |= STB;
-	}
-	if (termios->c_cflag & PARENB)
-		lcr |= PEN;
-	if (!(termios->c_cflag & PARODD))
-		lcr |= EPS;
-	if (termios->c_cflag & CMSPAR)
-		lcr |= STP;
-
-	spin_lock_irqsave(&uart->port.lock, flags);
-
-	port->read_status_mask = OE;
-	if (termios->c_iflag & INPCK)
-		port->read_status_mask |= (FE | PE);
-	if (termios->c_iflag & (IGNBRK | BRKINT | PARMRK))
-		port->read_status_mask |= BI;
-
-	/*
-	 * Characters to ignore
-	 */
-	port->ignore_status_mask = 0;
-	if (termios->c_iflag & IGNPAR)
-		port->ignore_status_mask |= FE | PE;
-	if (termios->c_iflag & IGNBRK) {
-		port->ignore_status_mask |= BI;
-		/*
-		 * If we're ignoring parity and break indicators,
-		 * ignore overruns too (for real raw support).
-		 */
-		if (termios->c_iflag & IGNPAR)
-			port->ignore_status_mask |= OE;
-	}
-
-	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
-	quot = uart_get_divisor(port, baud);
-
-	/* If discipline is not IRDA, apply ANOMALY_05000230 */
-	if (termios->c_line != N_IRDA)
-		quot -= ANOMALY_05000230;
-
-	UART_SET_ANOMALY_THRESHOLD(uart, USEC_PER_SEC / baud * 15);
-
-	/* Wait till the transfer buffer is empty */
-	timeout = jiffies + msecs_to_jiffies(10);
-	while (UART_GET_GCTL(uart) & UCEN && !(UART_GET_LSR(uart) & TEMT))
-		if (time_after(jiffies, timeout)) {
-			dev_warn(port->dev, "timeout waiting for TX buffer empty\n");
-			break;
-		}
-
-	/* Disable UART */
-	ier = UART_GET_IER(uart);
-	UART_PUT_GCTL(uart, UART_GET_GCTL(uart) & ~UCEN);
-	UART_DISABLE_INTS(uart);
-
-	/* Set DLAB in LCR to Access CLK */
-	UART_SET_DLAB(uart);
-
-	UART_PUT_CLK(uart, quot);
-	SSYNC();
-
-	/* Clear DLAB in LCR to Access THR RBR IER */
-	UART_CLEAR_DLAB(uart);
-
-	UART_PUT_LCR(uart, (UART_GET_LCR(uart) & ~LCR_MASK) | lcr);
-
-	/* Enable UART */
-	UART_ENABLE_INTS(uart, ier);
-	UART_PUT_GCTL(uart, UART_GET_GCTL(uart) | UCEN);
-
-	/* Port speed changed, update the per-port timeout. */
-	uart_update_timeout(port, termios->c_cflag, baud);
-
-	spin_unlock_irqrestore(&uart->port.lock, flags);
-}
-
-static const char *bfin_serial_type(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-	return uart->port.type == PORT_BFIN ? "BFIN-UART" : NULL;
-}
-
-/*
- * Release the memory region(s) being used by 'port'.
- */
-static void bfin_serial_release_port(struct uart_port *port)
-{
-}
-
-/*
- * Request the memory region(s) being used by 'port'.
- */
-static int bfin_serial_request_port(struct uart_port *port)
-{
-	return 0;
-}
-
-/*
- * Configure/autoconfigure the port.
- */
-static void bfin_serial_config_port(struct uart_port *port, int flags)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-	if (flags & UART_CONFIG_TYPE &&
-	    bfin_serial_request_port(&uart->port) == 0)
-		uart->port.type = PORT_BFIN;
-}
-
-/*
- * Verify the new serial_struct (for TIOCSSERIAL).
- * The only change we allow are to the flags and type, and
- * even then only between PORT_BFIN and PORT_UNKNOWN
- */
-static int
-bfin_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
-	return 0;
-}
-
-/*
- * Enable the IrDA function if tty->ldisc.num is N_IRDA.
- * In other cases, disable IrDA function.
- */
-static void bfin_serial_set_ldisc(struct uart_port *port,
-				  struct ktermios *termios)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned int val;
-
-	switch (termios->c_line) {
-	case N_IRDA:
-		val = UART_GET_GCTL(uart);
-		val |= (UMOD_IRDA | RPOLC);
-		UART_PUT_GCTL(uart, val);
-		break;
-	default:
-		val = UART_GET_GCTL(uart);
-		val &= ~(UMOD_MASK | RPOLC);
-		UART_PUT_GCTL(uart, val);
-	}
-}
-
-static void bfin_serial_reset_irda(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned int val;
-
-	val = UART_GET_GCTL(uart);
-	val &= ~(UMOD_MASK | RPOLC);
-	UART_PUT_GCTL(uart, val);
-	SSYNC();
-	val |= (UMOD_IRDA | RPOLC);
-	UART_PUT_GCTL(uart, val);
-	SSYNC();
-}
-
-#ifdef CONFIG_CONSOLE_POLL
-/* Anomaly notes:
- *  05000099 -  Because we only use THRE in poll_put and DR in poll_get,
- *		losing other bits of UART_LSR is not a problem here.
- */
-static void bfin_serial_poll_put_char(struct uart_port *port, unsigned char chr)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-
-	while (!(UART_GET_LSR(uart) & THRE))
-		cpu_relax();
-
-	UART_CLEAR_DLAB(uart);
-	UART_PUT_CHAR(uart, (unsigned char)chr);
-}
-
-static int bfin_serial_poll_get_char(struct uart_port *port)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	unsigned char chr;
-
-	while (!(UART_GET_LSR(uart) & DR))
-		cpu_relax();
-
-	UART_CLEAR_DLAB(uart);
-	chr = UART_GET_CHAR(uart);
-
-	return chr;
-}
-#endif
-
-static struct uart_ops bfin_serial_pops = {
-	.tx_empty	= bfin_serial_tx_empty,
-	.set_mctrl	= bfin_serial_set_mctrl,
-	.get_mctrl	= bfin_serial_get_mctrl,
-	.stop_tx	= bfin_serial_stop_tx,
-	.start_tx	= bfin_serial_start_tx,
-	.stop_rx	= bfin_serial_stop_rx,
-	.break_ctl	= bfin_serial_break_ctl,
-	.startup	= bfin_serial_startup,
-	.shutdown	= bfin_serial_shutdown,
-	.set_termios	= bfin_serial_set_termios,
-	.set_ldisc	= bfin_serial_set_ldisc,
-	.type		= bfin_serial_type,
-	.release_port	= bfin_serial_release_port,
-	.request_port	= bfin_serial_request_port,
-	.config_port	= bfin_serial_config_port,
-	.verify_port	= bfin_serial_verify_port,
-#ifdef CONFIG_CONSOLE_POLL
-	.poll_put_char	= bfin_serial_poll_put_char,
-	.poll_get_char	= bfin_serial_poll_get_char,
-#endif
-};
-
-#if defined(CONFIG_SERIAL_BFIN_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
-/*
- * If the port was already initialised (eg, by a boot loader),
- * try to determine the current setup.
- */
-static void __init
-bfin_serial_console_get_options(struct bfin_serial_port *uart, int *baud,
-			   int *parity, int *bits)
-{
-	unsigned int status;
-
-	status = UART_GET_IER(uart) & (ERBFI | ETBEI);
-	if (status == (ERBFI | ETBEI)) {
-		/* ok, the port was enabled */
-		u32 lcr, clk;
-
-		lcr = UART_GET_LCR(uart);
-
-		*parity = 'n';
-		if (lcr & PEN) {
-			if (lcr & EPS)
-				*parity = 'e';
-			else
-				*parity = 'o';
-		}
-		*bits = ((lcr & WLS_MASK) >> WLS_OFFSET) + 5;
-
-		/* Set DLAB in LCR to Access CLK */
-		UART_SET_DLAB(uart);
-
-		clk = UART_GET_CLK(uart);
-
-		/* Clear DLAB in LCR to Access THR RBR IER */
-		UART_CLEAR_DLAB(uart);
-
-		*baud = get_sclk() / (16*clk);
-	}
-	pr_debug("%s:baud = %d, parity = %c, bits= %d\n", __func__, *baud, *parity, *bits);
-}
-
-static struct uart_driver bfin_serial_reg;
-
-static void bfin_serial_console_putchar(struct uart_port *port, int ch)
-{
-	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-	while (!(UART_GET_LSR(uart) & THRE))
-		barrier();
-	UART_PUT_CHAR(uart, ch);
-}
-
-#endif /* defined (CONFIG_SERIAL_BFIN_CONSOLE) ||
-		 defined (CONFIG_EARLY_PRINTK) */
-
-#ifdef CONFIG_SERIAL_BFIN_CONSOLE
-#define CLASS_BFIN_CONSOLE	"bfin-console"
-/*
- * Interrupts are disabled on entering
- */
-static void
-bfin_serial_console_write(struct console *co, const char *s, unsigned int count)
-{
-	struct bfin_serial_port *uart = bfin_serial_ports[co->index];
-	unsigned long flags;
-
-	spin_lock_irqsave(&uart->port.lock, flags);
-	uart_console_write(&uart->port, s, count, bfin_serial_console_putchar);
-	spin_unlock_irqrestore(&uart->port.lock, flags);
-
-}
-
-static int __init
-bfin_serial_console_setup(struct console *co, char *options)
-{
-	struct bfin_serial_port *uart;
-	int baud = 57600;
-	int bits = 8;
-	int parity = 'n';
-# if defined(SERIAL_BFIN_CTSRTS) || \
-	defined(SERIAL_BFIN_HARD_CTSRTS)
-	int flow = 'r';
-# else
-	int flow = 'n';
-# endif
-
-	/*
-	 * Check whether an invalid uart number has been specified, and
-	 * if so, search for the first available port that does have
-	 * console support.
-	 */
-	if (co->index < 0 || co->index >= BFIN_UART_NR_PORTS)
-		return -ENODEV;
-
-	uart = bfin_serial_ports[co->index];
-	if (!uart)
-		return -ENODEV;
-
-	if (options)
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-	else
-		bfin_serial_console_get_options(uart, &baud, &parity, &bits);
-
-	return uart_set_options(&uart->port, co, baud, parity, bits, flow);
-}
-
-static struct console bfin_serial_console = {
-	.name		= BFIN_SERIAL_DEV_NAME,
-	.write		= bfin_serial_console_write,
-	.device		= uart_console_device,
-	.setup		= bfin_serial_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-	.data		= &bfin_serial_reg,
-};
-#define BFIN_SERIAL_CONSOLE	(&bfin_serial_console)
-#else
-#define BFIN_SERIAL_CONSOLE	NULL
-#endif /* CONFIG_SERIAL_BFIN_CONSOLE */
-
-#ifdef	CONFIG_EARLY_PRINTK
-static struct bfin_serial_port bfin_earlyprintk_port;
-#define CLASS_BFIN_EARLYPRINTK	"bfin-earlyprintk"
-
-/*
- * Interrupts are disabled on entering
- */
-static void
-bfin_earlyprintk_console_write(struct console *co, const char *s, unsigned int count)
-{
-	unsigned long flags;
-
-	if (bfin_earlyprintk_port.port.line != co->index)
-		return;
-
-	spin_lock_irqsave(&bfin_earlyprintk_port.port.lock, flags);
-	uart_console_write(&bfin_earlyprintk_port.port, s, count,
-		bfin_serial_console_putchar);
-	spin_unlock_irqrestore(&bfin_earlyprintk_port.port.lock, flags);
-}
-
-/*
- * This should have a .setup or .early_setup in it, but then things get called
- * without the command line options, and the baud rate gets messed up - so
- * don't let the common infrastructure play with things. (see calls to setup
- * & earlysetup in ./kernel/printk.c:register_console()
- */
-static struct console bfin_early_serial_console __initdata = {
-	.name = "early_BFuart",
-	.write = bfin_earlyprintk_console_write,
-	.device = uart_console_device,
-	.flags = CON_PRINTBUFFER,
-	.index = -1,
-	.data  = &bfin_serial_reg,
-};
-#endif
-
-static struct uart_driver bfin_serial_reg = {
-	.owner			= THIS_MODULE,
-	.driver_name		= DRIVER_NAME,
-	.dev_name		= BFIN_SERIAL_DEV_NAME,
-	.major			= BFIN_SERIAL_MAJOR,
-	.minor			= BFIN_SERIAL_MINOR,
-	.nr			= BFIN_UART_NR_PORTS,
-	.cons			= BFIN_SERIAL_CONSOLE,
-};
-
-static int bfin_serial_suspend(struct platform_device *pdev, pm_message_t state)
-{
-	struct bfin_serial_port *uart = platform_get_drvdata(pdev);
-
-	return uart_suspend_port(&bfin_serial_reg, &uart->port);
-}
-
-static int bfin_serial_resume(struct platform_device *pdev)
-{
-	struct bfin_serial_port *uart = platform_get_drvdata(pdev);
-
-	return uart_resume_port(&bfin_serial_reg, &uart->port);
-}
-
-static int bfin_serial_probe(struct platform_device *pdev)
-{
-	struct resource *res;
-	struct bfin_serial_port *uart = NULL;
-	int ret = 0;
-
-	if (pdev->id < 0 || pdev->id >= BFIN_UART_NR_PORTS) {
-		dev_err(&pdev->dev, "Wrong bfin uart platform device id.\n");
-		return -ENOENT;
-	}
-
-	if (bfin_serial_ports[pdev->id] == NULL) {
-
-		uart = kzalloc(sizeof(*uart), GFP_KERNEL);
-		if (!uart) {
-			dev_err(&pdev->dev,
-				"fail to malloc bfin_serial_port\n");
-			return -ENOMEM;
-		}
-		bfin_serial_ports[pdev->id] = uart;
-
-#ifdef CONFIG_EARLY_PRINTK
-		if (!(bfin_earlyprintk_port.port.membase
-			&& bfin_earlyprintk_port.port.line == pdev->id)) {
-			/*
-			 * If the peripheral PINs of current port is allocated
-			 * in earlyprintk probe stage, don't do it again.
-			 */
-#endif
-		ret = peripheral_request_list(
-			dev_get_platdata(&pdev->dev),
-			DRIVER_NAME);
-		if (ret) {
-			dev_err(&pdev->dev,
-				"fail to request bfin serial peripherals\n");
-			goto out_error_free_mem;
-		}
-#ifdef CONFIG_EARLY_PRINTK
-		}
-#endif
-
-		spin_lock_init(&uart->port.lock);
-		uart->port.uartclk   = get_sclk();
-		uart->port.fifosize  = BFIN_UART_TX_FIFO_SIZE;
-		uart->port.ops       = &bfin_serial_pops;
-		uart->port.line      = pdev->id;
-		uart->port.iotype    = UPIO_MEM;
-		uart->port.flags     = UPF_BOOT_AUTOCONF;
-
-		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		if (res == NULL) {
-			dev_err(&pdev->dev, "Cannot get IORESOURCE_MEM\n");
-			ret = -ENOENT;
-			goto out_error_free_peripherals;
-		}
-
-		uart->port.membase = ioremap(res->start, resource_size(res));
-		if (!uart->port.membase) {
-			dev_err(&pdev->dev, "Cannot map uart IO\n");
-			ret = -ENXIO;
-			goto out_error_free_peripherals;
-		}
-		uart->port.mapbase = res->start;
-
-		uart->tx_irq = platform_get_irq(pdev, 0);
-		if (uart->tx_irq < 0) {
-			dev_err(&pdev->dev, "No uart TX IRQ specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-
-		uart->rx_irq = platform_get_irq(pdev, 1);
-		if (uart->rx_irq < 0) {
-			dev_err(&pdev->dev, "No uart RX IRQ specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-		uart->port.irq = uart->rx_irq;
-
-		uart->status_irq = platform_get_irq(pdev, 2);
-		if (uart->status_irq < 0) {
-			dev_err(&pdev->dev, "No uart status IRQ specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-
-#ifdef CONFIG_SERIAL_BFIN_DMA
-		spin_lock_init(&uart->rx_lock);
-		uart->tx_done	    = 1;
-		uart->tx_count	    = 0;
-
-		res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-		if (res == NULL) {
-			dev_err(&pdev->dev, "No uart TX DMA channel specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-		uart->tx_dma_channel = res->start;
-
-		res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
-		if (res == NULL) {
-			dev_err(&pdev->dev, "No uart RX DMA channel specified\n");
-			ret = -ENOENT;
-			goto out_error_unmap;
-		}
-		uart->rx_dma_channel = res->start;
-
-		timer_setup(&uart->rx_dma_timer, bfin_serial_rx_dma_timeout, 0);
-#endif
-
-#if defined(SERIAL_BFIN_CTSRTS) || \
-	defined(SERIAL_BFIN_HARD_CTSRTS)
-		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-		if (res == NULL)
-			uart->cts_pin = -1;
-		else
-			uart->cts_pin = res->start;
-
-		res = platform_get_resource(pdev, IORESOURCE_IO, 1);
-		if (res == NULL)
-			uart->rts_pin = -1;
-		else
-			uart->rts_pin = res->start;
-#endif
-	}
-
-#ifdef CONFIG_SERIAL_BFIN_CONSOLE
-	if (!is_early_platform_device(pdev)) {
-#endif
-		uart = bfin_serial_ports[pdev->id];
-		uart->port.dev = &pdev->dev;
-		dev_set_drvdata(&pdev->dev, uart);
-		ret = uart_add_one_port(&bfin_serial_reg, &uart->port);
-#ifdef CONFIG_SERIAL_BFIN_CONSOLE
-	}
-#endif
-
-	if (!ret)
-		return 0;
-
-	if (uart) {
-out_error_unmap:
-		iounmap(uart->port.membase);
-out_error_free_peripherals:
-		peripheral_free_list(dev_get_platdata(&pdev->dev));
-out_error_free_mem:
-		kfree(uart);
-		bfin_serial_ports[pdev->id] = NULL;
-	}
-
-	return ret;
-}
-
-static int bfin_serial_remove(struct platform_device *pdev)
-{
-	struct bfin_serial_port *uart = platform_get_drvdata(pdev);
-
-	dev_set_drvdata(&pdev->dev, NULL);
-
-	if (uart) {
-		uart_remove_one_port(&bfin_serial_reg, &uart->port);
-		iounmap(uart->port.membase);
-		peripheral_free_list(dev_get_platdata(&pdev->dev));
-		kfree(uart);
-		bfin_serial_ports[pdev->id] = NULL;
-	}
-
-	return 0;
-}
-
-static struct platform_driver bfin_serial_driver = {
-	.probe		= bfin_serial_probe,
-	.remove		= bfin_serial_remove,
-	.suspend	= bfin_serial_suspend,
-	.resume		= bfin_serial_resume,
-	.driver		= {
-		.name	= DRIVER_NAME,
-	},
-};
-
-#if defined(CONFIG_SERIAL_BFIN_CONSOLE)
-static struct early_platform_driver early_bfin_serial_driver __initdata = {
-	.class_str = CLASS_BFIN_CONSOLE,
-	.pdrv = &bfin_serial_driver,
-	.requested_id = EARLY_PLATFORM_ID_UNSET,
-};
-
-static int __init bfin_serial_rs_console_init(void)
-{
-	early_platform_driver_register(&early_bfin_serial_driver, DRIVER_NAME);
-
-	early_platform_driver_probe(CLASS_BFIN_CONSOLE, BFIN_UART_NR_PORTS, 0);
-
-	register_console(&bfin_serial_console);
-
-	return 0;
-}
-console_initcall(bfin_serial_rs_console_init);
-#endif
-
-#ifdef CONFIG_EARLY_PRINTK
-/*
- * Memory can't be allocated dynamically during earlyprink init stage.
- * So, do individual probe for earlyprink with a static uart port variable.
- */
-static int bfin_earlyprintk_probe(struct platform_device *pdev)
-{
-	struct resource *res;
-	int ret;
-
-	if (pdev->id < 0 || pdev->id >= BFIN_UART_NR_PORTS) {
-		dev_err(&pdev->dev, "Wrong earlyprintk platform device id.\n");
-		return -ENOENT;
-	}
-
-	ret = peripheral_request_list(dev_get_platdata(&pdev->dev),
-					DRIVER_NAME);
-	if (ret) {
-		dev_err(&pdev->dev,
-				"fail to request bfin serial peripherals\n");
-			return ret;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (res == NULL) {
-		dev_err(&pdev->dev, "Cannot get IORESOURCE_MEM\n");
-		ret = -ENOENT;
-		goto out_error_free_peripherals;
-	}
-
-	bfin_earlyprintk_port.port.membase = ioremap(res->start,
-						     resource_size(res));
-	if (!bfin_earlyprintk_port.port.membase) {
-		dev_err(&pdev->dev, "Cannot map uart IO\n");
-		ret = -ENXIO;
-		goto out_error_free_peripherals;
-	}
-	bfin_earlyprintk_port.port.mapbase = res->start;
-	bfin_earlyprintk_port.port.line = pdev->id;
-	bfin_earlyprintk_port.port.uartclk = get_sclk();
-	bfin_earlyprintk_port.port.fifosize  = BFIN_UART_TX_FIFO_SIZE;
-	spin_lock_init(&bfin_earlyprintk_port.port.lock);
-
-	return 0;
-
-out_error_free_peripherals:
-	peripheral_free_list(dev_get_platdata(&pdev->dev));
-
-	return ret;
-}
-
-static struct platform_driver bfin_earlyprintk_driver = {
-	.probe		= bfin_earlyprintk_probe,
-	.driver		= {
-		.name	= DRIVER_NAME,
-		.owner	= THIS_MODULE,
-	},
-};
-
-static struct early_platform_driver early_bfin_earlyprintk_driver __initdata = {
-	.class_str = CLASS_BFIN_EARLYPRINTK,
-	.pdrv = &bfin_earlyprintk_driver,
-	.requested_id = EARLY_PLATFORM_ID_UNSET,
-};
-
-struct console __init *bfin_earlyserial_init(unsigned int port,
-						unsigned int cflag)
-{
-	struct ktermios t;
-	char port_name[20];
-
-	if (port < 0 || port >= BFIN_UART_NR_PORTS)
-		return NULL;
-
-	/*
-	 * Only probe resource of the given port in earlyprintk boot arg.
-	 * The expected port id should be indicated in port name string.
-	 */
-	snprintf(port_name, 20, DRIVER_NAME ".%d", port);
-	early_platform_driver_register(&early_bfin_earlyprintk_driver,
-		port_name);
-	early_platform_driver_probe(CLASS_BFIN_EARLYPRINTK, 1, 0);
-
-	if (!bfin_earlyprintk_port.port.membase)
-		return NULL;
-
-#ifdef CONFIG_SERIAL_BFIN_CONSOLE
-	/*
-	 * If we are using early serial, don't let the normal console rewind
-	 * log buffer, since that causes things to be printed multiple times
-	 */
-	bfin_serial_console.flags &= ~CON_PRINTBUFFER;
-#endif
-
-	bfin_early_serial_console.index = port;
-	t.c_cflag = cflag;
-	t.c_iflag = 0;
-	t.c_oflag = 0;
-	t.c_lflag = ICANON;
-	t.c_line = port;
-	bfin_serial_set_termios(&bfin_earlyprintk_port.port, &t, &t);
-
-	return &bfin_early_serial_console;
-}
-#endif /* CONFIG_EARLY_PRINTK */
-
-static int __init bfin_serial_init(void)
-{
-	int ret;
-
-	pr_info("Blackfin serial driver\n");
-
-	ret = uart_register_driver(&bfin_serial_reg);
-	if (ret) {
-		pr_err("failed to register %s:%d\n",
-			bfin_serial_reg.driver_name, ret);
-	}
-
-	ret = platform_driver_register(&bfin_serial_driver);
-	if (ret) {
-		pr_err("fail to register bfin uart\n");
-		uart_unregister_driver(&bfin_serial_reg);
-	}
-
-	return ret;
-}
-
-static void __exit bfin_serial_exit(void)
-{
-	platform_driver_unregister(&bfin_serial_driver);
-	uart_unregister_driver(&bfin_serial_reg);
-}
-
-
-module_init(bfin_serial_init);
-module_exit(bfin_serial_exit);
-
-MODULE_AUTHOR("Sonic Zhang, Aubrey Li");
-MODULE_DESCRIPTION("Blackfin generic serial port driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV_MAJOR(BFIN_SERIAL_MAJOR);
-MODULE_ALIAS("platform:bfin-uart");
diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
deleted file mode 100644
index c9458a033e3c..000000000000
--- a/drivers/tty/serial/crisv10.c
+++ /dev/null
@@ -1,4248 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Serial port driver for the ETRAX 100LX chip
- *
- *    Copyright (C) 1998-2007  Axis Communications AB
- *
- *    Many, many authors. Based once upon a time on serial.c for 16x50.
- *
- */
-
-static char *serial_version = "$Revision: 1.25 $";
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched/signal.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/major.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/mutex.h>
-#include <linux/bitops.h>
-#include <linux/seq_file.h>
-#include <linux/delay.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-
-#include <asm/irq.h>
-#include <asm/dma.h>
-
-#include <arch/svinto.h>
-#include <arch/system.h>
-
-/* non-arch dependent serial structures are in linux/serial.h */
-#include <linux/serial.h>
-/* while we keep our own stuff (struct e100_serial) in a local .h file */
-#include "crisv10.h"
-#include <asm/fasttimer.h>
-#include <arch/io_interface_mux.h>
-
-#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
-#ifndef CONFIG_ETRAX_FAST_TIMER
-#error "Enable FAST_TIMER to use SERIAL_FAST_TIMER"
-#endif
-#endif
-
-#if defined(CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS) && \
-           (CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS == 0)
-#error "RX_TIMEOUT_TICKS == 0 not allowed, use 1"
-#endif
-
-/*
- * All of the compatibilty code so we can compile serial.c against
- * older kernels is hidden in serial_compat.h
- */
-#if defined(LOCAL_HEADERS)
-#include "serial_compat.h"
-#endif
-
-struct tty_driver *serial_driver;
-
-/* number of characters left in xmit buffer before we ask for more */
-#define WAKEUP_CHARS 256
-
-//#define SERIAL_DEBUG_INTR
-//#define SERIAL_DEBUG_OPEN
-//#define SERIAL_DEBUG_FLOW
-//#define SERIAL_DEBUG_DATA
-//#define SERIAL_DEBUG_THROTTLE
-//#define SERIAL_DEBUG_IO  /* Debug for Extra control and status pins */
-//#define SERIAL_DEBUG_LINE 0 /* What serport we want to debug */
-
-/* Enable this to use serial interrupts to handle when you
-   expect the first received event on the serial port to
-   be an error, break or similar. Used to be able to flash IRMA
-   from eLinux */
-#define SERIAL_HANDLE_EARLY_ERRORS
-
-/* Currently 16 descriptors x 128 bytes = 2048 bytes */
-#define SERIAL_DESCR_BUF_SIZE 256
-
-#define SERIAL_PRESCALE_BASE 3125000 /* 3.125MHz */
-#define DEF_BAUD_BASE SERIAL_PRESCALE_BASE
-
-/* We don't want to load the system with massive fast timer interrupt
- * on high baudrates so limit it to 250 us (4kHz) */
-#define MIN_FLUSH_TIME_USEC 250
-
-/* Add an x here to log a lot of timer stuff */
-#define TIMERD(x)
-/* Debug details of interrupt handling */
-#define DINTR1(x)  /* irq on/off, errors */
-#define DINTR2(x)    /* tx and rx */
-/* Debug flip buffer stuff */
-#define DFLIP(x)
-/* Debug flow control and overview of data flow */
-#define DFLOW(x)
-#define DBAUD(x)
-#define DLOG_INT_TRIG(x)
-
-//#define DEBUG_LOG_INCLUDED
-#ifndef DEBUG_LOG_INCLUDED
-#define DEBUG_LOG(line, string, value)
-#else
-struct debug_log_info
-{
-	unsigned long time;
-	unsigned long timer_data;
-//  int line;
-	const char *string;
-	int value;
-};
-#define DEBUG_LOG_SIZE 4096
-
-struct debug_log_info debug_log[DEBUG_LOG_SIZE];
-int debug_log_pos = 0;
-
-#define DEBUG_LOG(_line, _string, _value) do { \
-  if ((_line) == SERIAL_DEBUG_LINE) {\
-    debug_log_func(_line, _string, _value); \
-  }\
-}while(0)
-
-void debug_log_func(int line, const char *string, int value)
-{
-	if (debug_log_pos < DEBUG_LOG_SIZE) {
-		debug_log[debug_log_pos].time = jiffies;
-		debug_log[debug_log_pos].timer_data = *R_TIMER_DATA;
-//    debug_log[debug_log_pos].line = line;
-		debug_log[debug_log_pos].string = string;
-		debug_log[debug_log_pos].value = value;
-		debug_log_pos++;
-	}
-	/*printk(string, value);*/
-}
-#endif
-
-#ifndef CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS
-/* Default number of timer ticks before flushing rx fifo
- * When using "little data, low latency applications: use 0
- * When using "much data applications (PPP)" use ~5
- */
-#define CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS 5
-#endif
-
-unsigned long timer_data_to_ns(unsigned long timer_data);
-
-static void change_speed(struct e100_serial *info);
-static void rs_throttle(struct tty_struct * tty);
-static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
-static int rs_write(struct tty_struct *tty,
-		const unsigned char *buf, int count);
-#ifdef CONFIG_ETRAX_RS485
-static int e100_write_rs485(struct tty_struct *tty,
-		const unsigned char *buf, int count);
-#endif
-static int get_lsr_info(struct e100_serial *info, unsigned int *value);
-
-
-#define DEF_BAUD 115200   /* 115.2 kbit/s */
-#define DEF_RX 0x20  /* or SERIAL_CTRL_W >> 8 */
-/* Default value of tx_ctrl register: has txd(bit 7)=1 (idle) as default */
-#define DEF_TX 0x80  /* or SERIAL_CTRL_B */
-
-/* offsets from R_SERIALx_CTRL */
-
-#define REG_DATA 0
-#define REG_DATA_STATUS32 0 /* this is the 32 bit register R_SERIALx_READ */
-#define REG_TR_DATA 0
-#define REG_STATUS 1
-#define REG_TR_CTRL 1
-#define REG_REC_CTRL 2
-#define REG_BAUD 3
-#define REG_XOFF 4  /* this is a 32 bit register */
-
-/* The bitfields are the same for all serial ports */
-#define SER_RXD_MASK         IO_MASK(R_SERIAL0_STATUS, rxd)
-#define SER_DATA_AVAIL_MASK  IO_MASK(R_SERIAL0_STATUS, data_avail)
-#define SER_FRAMING_ERR_MASK IO_MASK(R_SERIAL0_STATUS, framing_err)
-#define SER_PAR_ERR_MASK     IO_MASK(R_SERIAL0_STATUS, par_err)
-#define SER_OVERRUN_MASK     IO_MASK(R_SERIAL0_STATUS, overrun)
-
-#define SER_ERROR_MASK (SER_OVERRUN_MASK | SER_PAR_ERR_MASK | SER_FRAMING_ERR_MASK)
-
-/* Values for info->errorcode */
-#define ERRCODE_SET_BREAK    (TTY_BREAK)
-#define ERRCODE_INSERT        0x100
-#define ERRCODE_INSERT_BREAK (ERRCODE_INSERT | TTY_BREAK)
-
-#define FORCE_EOP(info)  *R_SET_EOP = 1U << info->iseteop;
-
-/*
- * General note regarding the use of IO_* macros in this file:
- *
- * We will use the bits defined for DMA channel 6 when using various
- * IO_* macros (e.g. IO_STATE, IO_MASK, IO_EXTRACT) and _assume_ they are
- * the same for all channels (which of course they are).
- *
- * We will also use the bits defined for serial port 0 when writing commands
- * to the different ports, as these bits too are the same for all ports.
- */
-
-
-/* Mask for the irqs possibly enabled in R_IRQ_MASK1_RD etc. */
-static const unsigned long e100_ser_int_mask = 0
-#ifdef CONFIG_ETRAX_SERIAL_PORT0
-| IO_MASK(R_IRQ_MASK1_RD, ser0_data) | IO_MASK(R_IRQ_MASK1_RD, ser0_ready)
-#endif
-#ifdef CONFIG_ETRAX_SERIAL_PORT1
-| IO_MASK(R_IRQ_MASK1_RD, ser1_data) | IO_MASK(R_IRQ_MASK1_RD, ser1_ready)
-#endif
-#ifdef CONFIG_ETRAX_SERIAL_PORT2
-| IO_MASK(R_IRQ_MASK1_RD, ser2_data) | IO_MASK(R_IRQ_MASK1_RD, ser2_ready)
-#endif
-#ifdef CONFIG_ETRAX_SERIAL_PORT3
-| IO_MASK(R_IRQ_MASK1_RD, ser3_data) | IO_MASK(R_IRQ_MASK1_RD, ser3_ready)
-#endif
-;
-unsigned long r_alt_ser_baudrate_shadow = 0;
-
-/* this is the data for the four serial ports in the etrax100 */
-/*  DMA2(ser2), DMA4(ser3), DMA6(ser0) or DMA8(ser1) */
-/* R_DMA_CHx_CLR_INTR, R_DMA_CHx_FIRST, R_DMA_CHx_CMD */
-
-static struct e100_serial rs_table[] = {
-	{ .baud        = DEF_BAUD,
-	  .ioport        = (unsigned char *)R_SERIAL0_CTRL,
-	  .irq         = 1U << 12, /* uses DMA 6 and 7 */
-	  .oclrintradr = R_DMA_CH6_CLR_INTR,
-	  .ofirstadr   = R_DMA_CH6_FIRST,
-	  .ocmdadr     = R_DMA_CH6_CMD,
-	  .ostatusadr  = R_DMA_CH6_STATUS,
-	  .iclrintradr = R_DMA_CH7_CLR_INTR,
-	  .ifirstadr   = R_DMA_CH7_FIRST,
-	  .icmdadr     = R_DMA_CH7_CMD,
-	  .idescradr   = R_DMA_CH7_DESCR,
-	  .rx_ctrl     = DEF_RX,
-	  .tx_ctrl     = DEF_TX,
-	  .iseteop     = 2,
-	  .dma_owner   = dma_ser0,
-	  .io_if       = if_serial_0,
-#ifdef CONFIG_ETRAX_SERIAL_PORT0
-          .enabled  = 1,
-#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT
-	  .dma_out_enabled = 1,
-	  .dma_out_nbr = SER0_TX_DMA_NBR,
-	  .dma_out_irq_nbr = SER0_DMA_TX_IRQ_NBR,
-	  .dma_out_irq_flags = 0,
-	  .dma_out_irq_description = "serial 0 dma tr",
-#else
-	  .dma_out_enabled = 0,
-	  .dma_out_nbr = UINT_MAX,
-	  .dma_out_irq_nbr = 0,
-	  .dma_out_irq_flags = 0,
-	  .dma_out_irq_description = NULL,
-#endif
-#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN
-	  .dma_in_enabled = 1,
-	  .dma_in_nbr = SER0_RX_DMA_NBR,
-	  .dma_in_irq_nbr = SER0_DMA_RX_IRQ_NBR,
-	  .dma_in_irq_flags = 0,
-	  .dma_in_irq_description = "serial 0 dma rec",
-#else
-	  .dma_in_enabled = 0,
-	  .dma_in_nbr = UINT_MAX,
-	  .dma_in_irq_nbr = 0,
-	  .dma_in_irq_flags = 0,
-	  .dma_in_irq_description = NULL,
-#endif
-#else
-          .enabled  = 0,
-	  .io_if_description = NULL,
-	  .dma_out_enabled = 0,
-	  .dma_in_enabled = 0
-#endif
-
-},  /* ttyS0 */
-	{ .baud        = DEF_BAUD,
-	  .ioport        = (unsigned char *)R_SERIAL1_CTRL,
-	  .irq         = 1U << 16, /* uses DMA 8 and 9 */
-	  .oclrintradr = R_DMA_CH8_CLR_INTR,
-	  .ofirstadr   = R_DMA_CH8_FIRST,
-	  .ocmdadr     = R_DMA_CH8_CMD,
-	  .ostatusadr  = R_DMA_CH8_STATUS,
-	  .iclrintradr = R_DMA_CH9_CLR_INTR,
-	  .ifirstadr   = R_DMA_CH9_FIRST,
-	  .icmdadr     = R_DMA_CH9_CMD,
-	  .idescradr   = R_DMA_CH9_DESCR,
-	  .rx_ctrl     = DEF_RX,
-	  .tx_ctrl     = DEF_TX,
-	  .iseteop     = 3,
-	  .dma_owner   = dma_ser1,
-	  .io_if       = if_serial_1,
-#ifdef CONFIG_ETRAX_SERIAL_PORT1
-          .enabled  = 1,
-	  .io_if_description = "ser1",
-#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA8_OUT
-	  .dma_out_enabled = 1,
-	  .dma_out_nbr = SER1_TX_DMA_NBR,
-	  .dma_out_irq_nbr = SER1_DMA_TX_IRQ_NBR,
-	  .dma_out_irq_flags = 0,
-	  .dma_out_irq_description = "serial 1 dma tr",
-#else
-	  .dma_out_enabled = 0,
-	  .dma_out_nbr = UINT_MAX,
-	  .dma_out_irq_nbr = 0,
-	  .dma_out_irq_flags = 0,
-	  .dma_out_irq_description = NULL,
-#endif
-#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA9_IN
-	  .dma_in_enabled = 1,
-	  .dma_in_nbr = SER1_RX_DMA_NBR,
-	  .dma_in_irq_nbr = SER1_DMA_RX_IRQ_NBR,
-	  .dma_in_irq_flags = 0,
-	  .dma_in_irq_description = "serial 1 dma rec",
-#else
-	  .dma_in_enabled = 0,
-	  .dma_in_enabled = 0,
-	  .dma_in_nbr = UINT_MAX,
-	  .dma_in_irq_nbr = 0,
-	  .dma_in_irq_flags = 0,
-	  .dma_in_irq_description = NULL,
-#endif
-#else
-          .enabled  = 0,
-	  .io_if_description = NULL,
-	  .dma_in_irq_nbr = 0,
-	  .dma_out_enabled = 0,
-	  .dma_in_enabled = 0
-#endif
-},  /* ttyS1 */
-
-	{ .baud        = DEF_BAUD,
-	  .ioport        = (unsigned char *)R_SERIAL2_CTRL,
-	  .irq         = 1U << 4,  /* uses DMA 2 and 3 */
-	  .oclrintradr = R_DMA_CH2_CLR_INTR,
-	  .ofirstadr   = R_DMA_CH2_FIRST,
-	  .ocmdadr     = R_DMA_CH2_CMD,
-	  .ostatusadr  = R_DMA_CH2_STATUS,
-	  .iclrintradr = R_DMA_CH3_CLR_INTR,
-	  .ifirstadr   = R_DMA_CH3_FIRST,
-	  .icmdadr     = R_DMA_CH3_CMD,
-	  .idescradr   = R_DMA_CH3_DESCR,
-	  .rx_ctrl     = DEF_RX,
-	  .tx_ctrl     = DEF_TX,
-	  .iseteop     = 0,
-	  .dma_owner   = dma_ser2,
-	  .io_if       = if_serial_2,
-#ifdef CONFIG_ETRAX_SERIAL_PORT2
-          .enabled  = 1,
-	  .io_if_description = "ser2",
-#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT
-	  .dma_out_enabled = 1,
-	  .dma_out_nbr = SER2_TX_DMA_NBR,
-	  .dma_out_irq_nbr = SER2_DMA_TX_IRQ_NBR,
-	  .dma_out_irq_flags = 0,
-	  .dma_out_irq_description = "serial 2 dma tr",
-#else
-	  .dma_out_enabled = 0,
-	  .dma_out_nbr = UINT_MAX,
-	  .dma_out_irq_nbr = 0,
-	  .dma_out_irq_flags = 0,
-	  .dma_out_irq_description = NULL,
-#endif
-#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN
-	  .dma_in_enabled = 1,
-	  .dma_in_nbr = SER2_RX_DMA_NBR,
-	  .dma_in_irq_nbr = SER2_DMA_RX_IRQ_NBR,
-	  .dma_in_irq_flags = 0,
-	  .dma_in_irq_description = "serial 2 dma rec",
-#else
-	  .dma_in_enabled = 0,
-	  .dma_in_nbr = UINT_MAX,
-	  .dma_in_irq_nbr = 0,
-	  .dma_in_irq_flags = 0,
-	  .dma_in_irq_description = NULL,
-#endif
-#else
-          .enabled  = 0,
-	  .io_if_description = NULL,
-	  .dma_out_enabled = 0,
-	  .dma_in_enabled = 0
-#endif
- },  /* ttyS2 */
-
-	{ .baud        = DEF_BAUD,
-	  .ioport        = (unsigned char *)R_SERIAL3_CTRL,
-	  .irq         = 1U << 8,  /* uses DMA 4 and 5 */
-	  .oclrintradr = R_DMA_CH4_CLR_INTR,
-	  .ofirstadr   = R_DMA_CH4_FIRST,
-	  .ocmdadr     = R_DMA_CH4_CMD,
-	  .ostatusadr  = R_DMA_CH4_STATUS,
-	  .iclrintradr = R_DMA_CH5_CLR_INTR,
-	  .ifirstadr   = R_DMA_CH5_FIRST,
-	  .icmdadr     = R_DMA_CH5_CMD,
-	  .idescradr   = R_DMA_CH5_DESCR,
-	  .rx_ctrl     = DEF_RX,
-	  .tx_ctrl     = DEF_TX,
-	  .iseteop     = 1,
-	  .dma_owner   = dma_ser3,
-	  .io_if       = if_serial_3,
-#ifdef CONFIG_ETRAX_SERIAL_PORT3
-          .enabled  = 1,
-	  .io_if_description = "ser3",
-#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA4_OUT
-	  .dma_out_enabled = 1,
-	  .dma_out_nbr = SER3_TX_DMA_NBR,
-	  .dma_out_irq_nbr = SER3_DMA_TX_IRQ_NBR,
-	  .dma_out_irq_flags = 0,
-	  .dma_out_irq_description = "serial 3 dma tr",
-#else
-	  .dma_out_enabled = 0,
-	  .dma_out_nbr = UINT_MAX,
-	  .dma_out_irq_nbr = 0,
-	  .dma_out_irq_flags = 0,
-	  .dma_out_irq_description = NULL,
-#endif
-#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA5_IN
-	  .dma_in_enabled = 1,
-	  .dma_in_nbr = SER3_RX_DMA_NBR,
-	  .dma_in_irq_nbr = SER3_DMA_RX_IRQ_NBR,
-	  .dma_in_irq_flags = 0,
-	  .dma_in_irq_description = "serial 3 dma rec",
-#else
-	  .dma_in_enabled = 0,
-	  .dma_in_nbr = UINT_MAX,
-	  .dma_in_irq_nbr = 0,
-	  .dma_in_irq_flags = 0,
-	  .dma_in_irq_description = NULL
-#endif
-#else
-          .enabled  = 0,
-	  .io_if_description = NULL,
-	  .dma_out_enabled = 0,
-	  .dma_in_enabled = 0
-#endif
- }   /* ttyS3 */
-};
-
-
-#define NR_PORTS (sizeof(rs_table)/sizeof(struct e100_serial))
-
-#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
-static struct fast_timer fast_timers[NR_PORTS];
-#endif
-
-/* RS-485 */
-#if defined(CONFIG_ETRAX_RS485)
-#ifdef CONFIG_ETRAX_FAST_TIMER
-static struct fast_timer fast_timers_rs485[NR_PORTS];
-#endif
-#if defined(CONFIG_ETRAX_RS485_ON_PA)
-static int rs485_pa_bit = CONFIG_ETRAX_RS485_ON_PA_BIT;
-#endif
-#endif
-
-/* Info and macros needed for each ports extra control/status signals. */
-#define E100_STRUCT_PORT(line, pinname) \
- ((CONFIG_ETRAX_SER##line##_##pinname##_ON_PA_BIT >= 0)? \
-		(R_PORT_PA_DATA): ( \
- (CONFIG_ETRAX_SER##line##_##pinname##_ON_PB_BIT >= 0)? \
-		(R_PORT_PB_DATA):&dummy_ser[line]))
-
-#define E100_STRUCT_SHADOW(line, pinname) \
- ((CONFIG_ETRAX_SER##line##_##pinname##_ON_PA_BIT >= 0)? \
-		(&port_pa_data_shadow): ( \
- (CONFIG_ETRAX_SER##line##_##pinname##_ON_PB_BIT >= 0)? \
-		(&port_pb_data_shadow):&dummy_ser[line]))
-#define E100_STRUCT_MASK(line, pinname) \
- ((CONFIG_ETRAX_SER##line##_##pinname##_ON_PA_BIT >= 0)? \
-		(1<<CONFIG_ETRAX_SER##line##_##pinname##_ON_PA_BIT): ( \
- (CONFIG_ETRAX_SER##line##_##pinname##_ON_PB_BIT >= 0)? \
-		(1<<CONFIG_ETRAX_SER##line##_##pinname##_ON_PB_BIT):DUMMY_##pinname##_MASK))
-
-#define DUMMY_DTR_MASK 1
-#define DUMMY_RI_MASK  2
-#define DUMMY_DSR_MASK 4
-#define DUMMY_CD_MASK  8
-static unsigned char dummy_ser[NR_PORTS] = {0xFF, 0xFF, 0xFF,0xFF};
-
-/* If not all status pins are used or disabled, use mixed mode */
-#ifdef CONFIG_ETRAX_SERIAL_PORT0
-
-#define SER0_PA_BITSUM (CONFIG_ETRAX_SER0_DTR_ON_PA_BIT+CONFIG_ETRAX_SER0_RI_ON_PA_BIT+CONFIG_ETRAX_SER0_DSR_ON_PA_BIT+CONFIG_ETRAX_SER0_CD_ON_PA_BIT)
-
-#if SER0_PA_BITSUM != -4
-#  if CONFIG_ETRAX_SER0_DTR_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#   endif
-# if CONFIG_ETRAX_SER0_RI_ON_PA_BIT == -1
-#   ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED
-#     define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1
-#   endif
-#  endif
-#  if CONFIG_ETRAX_SER0_DSR_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#  if CONFIG_ETRAX_SER0_CD_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#endif
-
-#define SER0_PB_BITSUM (CONFIG_ETRAX_SER0_DTR_ON_PB_BIT+CONFIG_ETRAX_SER0_RI_ON_PB_BIT+CONFIG_ETRAX_SER0_DSR_ON_PB_BIT+CONFIG_ETRAX_SER0_CD_ON_PB_BIT)
-
-#if SER0_PB_BITSUM != -4
-#  if CONFIG_ETRAX_SER0_DTR_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#   endif
-# if CONFIG_ETRAX_SER0_RI_ON_PB_BIT == -1
-#   ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED
-#     define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1
-#   endif
-#  endif
-#  if CONFIG_ETRAX_SER0_DSR_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#  if CONFIG_ETRAX_SER0_CD_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#endif
-
-#endif /* PORT0 */
-
-
-#ifdef CONFIG_ETRAX_SERIAL_PORT1
-
-#define SER1_PA_BITSUM (CONFIG_ETRAX_SER1_DTR_ON_PA_BIT+CONFIG_ETRAX_SER1_RI_ON_PA_BIT+CONFIG_ETRAX_SER1_DSR_ON_PA_BIT+CONFIG_ETRAX_SER1_CD_ON_PA_BIT)
-
-#if SER1_PA_BITSUM != -4
-#  if CONFIG_ETRAX_SER1_DTR_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#   endif
-# if CONFIG_ETRAX_SER1_RI_ON_PA_BIT == -1
-#   ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED
-#     define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1
-#   endif
-#  endif
-#  if CONFIG_ETRAX_SER1_DSR_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#  if CONFIG_ETRAX_SER1_CD_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#endif
-
-#define SER1_PB_BITSUM (CONFIG_ETRAX_SER1_DTR_ON_PB_BIT+CONFIG_ETRAX_SER1_RI_ON_PB_BIT+CONFIG_ETRAX_SER1_DSR_ON_PB_BIT+CONFIG_ETRAX_SER1_CD_ON_PB_BIT)
-
-#if SER1_PB_BITSUM != -4
-#  if CONFIG_ETRAX_SER1_DTR_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#   endif
-# if CONFIG_ETRAX_SER1_RI_ON_PB_BIT == -1
-#   ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED
-#     define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1
-#   endif
-#  endif
-#  if CONFIG_ETRAX_SER1_DSR_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#  if CONFIG_ETRAX_SER1_CD_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#endif
-
-#endif /* PORT1 */
-
-#ifdef CONFIG_ETRAX_SERIAL_PORT2
-
-#define SER2_PA_BITSUM (CONFIG_ETRAX_SER2_DTR_ON_PA_BIT+CONFIG_ETRAX_SER2_RI_ON_PA_BIT+CONFIG_ETRAX_SER2_DSR_ON_PA_BIT+CONFIG_ETRAX_SER2_CD_ON_PA_BIT)
-
-#if SER2_PA_BITSUM != -4
-#  if CONFIG_ETRAX_SER2_DTR_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#   endif
-# if CONFIG_ETRAX_SER2_RI_ON_PA_BIT == -1
-#   ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED
-#     define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1
-#   endif
-#  endif
-#  if CONFIG_ETRAX_SER2_DSR_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#  if CONFIG_ETRAX_SER2_CD_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#endif
-
-#define SER2_PB_BITSUM (CONFIG_ETRAX_SER2_DTR_ON_PB_BIT+CONFIG_ETRAX_SER2_RI_ON_PB_BIT+CONFIG_ETRAX_SER2_DSR_ON_PB_BIT+CONFIG_ETRAX_SER2_CD_ON_PB_BIT)
-
-#if SER2_PB_BITSUM != -4
-#  if CONFIG_ETRAX_SER2_DTR_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#   endif
-# if CONFIG_ETRAX_SER2_RI_ON_PB_BIT == -1
-#   ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED
-#     define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1
-#   endif
-#  endif
-#  if CONFIG_ETRAX_SER2_DSR_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#  if CONFIG_ETRAX_SER2_CD_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#endif
-
-#endif /* PORT2 */
-
-#ifdef CONFIG_ETRAX_SERIAL_PORT3
-
-#define SER3_PA_BITSUM (CONFIG_ETRAX_SER3_DTR_ON_PA_BIT+CONFIG_ETRAX_SER3_RI_ON_PA_BIT+CONFIG_ETRAX_SER3_DSR_ON_PA_BIT+CONFIG_ETRAX_SER3_CD_ON_PA_BIT)
-
-#if SER3_PA_BITSUM != -4
-#  if CONFIG_ETRAX_SER3_DTR_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#   endif
-# if CONFIG_ETRAX_SER3_RI_ON_PA_BIT == -1
-#   ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED
-#     define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1
-#   endif
-#  endif
-#  if CONFIG_ETRAX_SER3_DSR_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#  if CONFIG_ETRAX_SER3_CD_ON_PA_BIT == -1
-#    ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#endif
-
-#define SER3_PB_BITSUM (CONFIG_ETRAX_SER3_DTR_ON_PB_BIT+CONFIG_ETRAX_SER3_RI_ON_PB_BIT+CONFIG_ETRAX_SER3_DSR_ON_PB_BIT+CONFIG_ETRAX_SER3_CD_ON_PB_BIT)
-
-#if SER3_PB_BITSUM != -4
-#  if CONFIG_ETRAX_SER3_DTR_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#   endif
-# if CONFIG_ETRAX_SER3_RI_ON_PB_BIT == -1
-#   ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED
-#     define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1
-#   endif
-#  endif
-#  if CONFIG_ETRAX_SER3_DSR_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#  if CONFIG_ETRAX_SER3_CD_ON_PB_BIT == -1
-#    ifndef CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED
-#      define CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED 1
-#    endif
-#  endif
-#endif
-
-#endif /* PORT3 */
-
-
-#if defined(CONFIG_ETRAX_SER0_DTR_RI_DSR_CD_MIXED) || \
-    defined(CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED) || \
-    defined(CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED) || \
-    defined(CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED)
-#define ETRAX_SERX_DTR_RI_DSR_CD_MIXED
-#endif
-
-#ifdef ETRAX_SERX_DTR_RI_DSR_CD_MIXED
-/* The pins can be mixed on PA and PB */
-#define CONTROL_PINS_PORT_NOT_USED(line) \
-  &dummy_ser[line], &dummy_ser[line], \
-  &dummy_ser[line], &dummy_ser[line], \
-  &dummy_ser[line], &dummy_ser[line], \
-  &dummy_ser[line], &dummy_ser[line], \
-  DUMMY_DTR_MASK, DUMMY_RI_MASK, DUMMY_DSR_MASK, DUMMY_CD_MASK
-
-
-struct control_pins
-{
-	volatile unsigned char *dtr_port;
-	unsigned char          *dtr_shadow;
-	volatile unsigned char *ri_port;
-	unsigned char          *ri_shadow;
-	volatile unsigned char *dsr_port;
-	unsigned char          *dsr_shadow;
-	volatile unsigned char *cd_port;
-	unsigned char          *cd_shadow;
-
-	unsigned char dtr_mask;
-	unsigned char ri_mask;
-	unsigned char dsr_mask;
-	unsigned char cd_mask;
-};
-
-static const struct control_pins e100_modem_pins[NR_PORTS] =
-{
-	/* Ser 0 */
-	{
-#ifdef CONFIG_ETRAX_SERIAL_PORT0
-	E100_STRUCT_PORT(0,DTR), E100_STRUCT_SHADOW(0,DTR),
-	E100_STRUCT_PORT(0,RI),  E100_STRUCT_SHADOW(0,RI),
-	E100_STRUCT_PORT(0,DSR), E100_STRUCT_SHADOW(0,DSR),
-	E100_STRUCT_PORT(0,CD),  E100_STRUCT_SHADOW(0,CD),
-	E100_STRUCT_MASK(0,DTR),
-	E100_STRUCT_MASK(0,RI),
-	E100_STRUCT_MASK(0,DSR),
-	E100_STRUCT_MASK(0,CD)
-#else
-	CONTROL_PINS_PORT_NOT_USED(0)
-#endif
-	},
-
-	/* Ser 1 */
-	{
-#ifdef CONFIG_ETRAX_SERIAL_PORT1
-	E100_STRUCT_PORT(1,DTR), E100_STRUCT_SHADOW(1,DTR),
-	E100_STRUCT_PORT(1,RI),  E100_STRUCT_SHADOW(1,RI),
-	E100_STRUCT_PORT(1,DSR), E100_STRUCT_SHADOW(1,DSR),
-	E100_STRUCT_PORT(1,CD),  E100_STRUCT_SHADOW(1,CD),
-	E100_STRUCT_MASK(1,DTR),
-	E100_STRUCT_MASK(1,RI),
-	E100_STRUCT_MASK(1,DSR),
-	E100_STRUCT_MASK(1,CD)
-#else
-	CONTROL_PINS_PORT_NOT_USED(1)
-#endif
-	},
-
-	/* Ser 2 */
-	{
-#ifdef CONFIG_ETRAX_SERIAL_PORT2
-	E100_STRUCT_PORT(2,DTR), E100_STRUCT_SHADOW(2,DTR),
-	E100_STRUCT_PORT(2,RI),  E100_STRUCT_SHADOW(2,RI),
-	E100_STRUCT_PORT(2,DSR), E100_STRUCT_SHADOW(2,DSR),
-	E100_STRUCT_PORT(2,CD),  E100_STRUCT_SHADOW(2,CD),
-	E100_STRUCT_MASK(2,DTR),
-	E100_STRUCT_MASK(2,RI),
-	E100_STRUCT_MASK(2,DSR),
-	E100_STRUCT_MASK(2,CD)
-#else
-	CONTROL_PINS_PORT_NOT_USED(2)
-#endif
-	},
-
-	/* Ser 3 */
-	{
-#ifdef CONFIG_ETRAX_SERIAL_PORT3
-	E100_STRUCT_PORT(3,DTR), E100_STRUCT_SHADOW(3,DTR),
-	E100_STRUCT_PORT(3,RI),  E100_STRUCT_SHADOW(3,RI),
-	E100_STRUCT_PORT(3,DSR), E100_STRUCT_SHADOW(3,DSR),
-	E100_STRUCT_PORT(3,CD),  E100_STRUCT_SHADOW(3,CD),
-	E100_STRUCT_MASK(3,DTR),
-	E100_STRUCT_MASK(3,RI),
-	E100_STRUCT_MASK(3,DSR),
-	E100_STRUCT_MASK(3,CD)
-#else
-	CONTROL_PINS_PORT_NOT_USED(3)
-#endif
-	}
-};
-#else  /* ETRAX_SERX_DTR_RI_DSR_CD_MIXED */
-
-/* All pins are on either PA or PB for each serial port */
-#define CONTROL_PINS_PORT_NOT_USED(line) \
-  &dummy_ser[line], &dummy_ser[line], \
-  DUMMY_DTR_MASK, DUMMY_RI_MASK, DUMMY_DSR_MASK, DUMMY_CD_MASK
-
-
-struct control_pins
-{
-	volatile unsigned char *port;
-	unsigned char          *shadow;
-
-	unsigned char dtr_mask;
-	unsigned char ri_mask;
-	unsigned char dsr_mask;
-	unsigned char cd_mask;
-};
-
-#define dtr_port port
-#define dtr_shadow shadow
-#define ri_port port
-#define ri_shadow shadow
-#define dsr_port port
-#define dsr_shadow shadow
-#define cd_port port
-#define cd_shadow shadow
-
-static const struct control_pins e100_modem_pins[NR_PORTS] =
-{
-	/* Ser 0 */
-	{
-#ifdef CONFIG_ETRAX_SERIAL_PORT0
-	E100_STRUCT_PORT(0,DTR), E100_STRUCT_SHADOW(0,DTR),
-	E100_STRUCT_MASK(0,DTR),
-	E100_STRUCT_MASK(0,RI),
-	E100_STRUCT_MASK(0,DSR),
-	E100_STRUCT_MASK(0,CD)
-#else
-	CONTROL_PINS_PORT_NOT_USED(0)
-#endif
-	},
-
-	/* Ser 1 */
-	{
-#ifdef CONFIG_ETRAX_SERIAL_PORT1
-	E100_STRUCT_PORT(1,DTR), E100_STRUCT_SHADOW(1,DTR),
-	E100_STRUCT_MASK(1,DTR),
-	E100_STRUCT_MASK(1,RI),
-	E100_STRUCT_MASK(1,DSR),
-	E100_STRUCT_MASK(1,CD)
-#else
-	CONTROL_PINS_PORT_NOT_USED(1)
-#endif
-	},
-
-	/* Ser 2 */
-	{
-#ifdef CONFIG_ETRAX_SERIAL_PORT2
-	E100_STRUCT_PORT(2,DTR), E100_STRUCT_SHADOW(2,DTR),
-	E100_STRUCT_MASK(2,DTR),
-	E100_STRUCT_MASK(2,RI),
-	E100_STRUCT_MASK(2,DSR),
-	E100_STRUCT_MASK(2,CD)
-#else
-	CONTROL_PINS_PORT_NOT_USED(2)
-#endif
-	},
-
-	/* Ser 3 */
-	{
-#ifdef CONFIG_ETRAX_SERIAL_PORT3
-	E100_STRUCT_PORT(3,DTR), E100_STRUCT_SHADOW(3,DTR),
-	E100_STRUCT_MASK(3,DTR),
-	E100_STRUCT_MASK(3,RI),
-	E100_STRUCT_MASK(3,DSR),
-	E100_STRUCT_MASK(3,CD)
-#else
-	CONTROL_PINS_PORT_NOT_USED(3)
-#endif
-	}
-};
-#endif /* !ETRAX_SERX_DTR_RI_DSR_CD_MIXED */
-
-#define E100_RTS_MASK 0x20
-#define E100_CTS_MASK 0x40
-
-/* All serial port signals are active low:
- * active   = 0 -> 3.3V to RS-232 driver -> -12V on RS-232 level
- * inactive = 1 -> 0V   to RS-232 driver -> +12V on RS-232 level
- *
- * These macros returns the pin value: 0=0V, >=1 = 3.3V on ETRAX chip
- */
-
-/* Output */
-#define E100_RTS_GET(info) ((info)->rx_ctrl & E100_RTS_MASK)
-/* Input */
-#define E100_CTS_GET(info) ((info)->ioport[REG_STATUS] & E100_CTS_MASK)
-
-/* These are typically PA or PB and 0 means 0V, 1 means 3.3V */
-/* Is an output */
-#define E100_DTR_GET(info) ((*e100_modem_pins[(info)->line].dtr_shadow) & e100_modem_pins[(info)->line].dtr_mask)
-
-/* Normally inputs */
-#define E100_RI_GET(info) ((*e100_modem_pins[(info)->line].ri_port) & e100_modem_pins[(info)->line].ri_mask)
-#define E100_CD_GET(info) ((*e100_modem_pins[(info)->line].cd_port) & e100_modem_pins[(info)->line].cd_mask)
-
-/* Input */
-#define E100_DSR_GET(info) ((*e100_modem_pins[(info)->line].dsr_port) & e100_modem_pins[(info)->line].dsr_mask)
-
-/* Calculate the chartime depending on baudrate, numbor of bits etc. */
-static void update_char_time(struct e100_serial * info)
-{
-	tcflag_t cflags = info->port.tty->termios.c_cflag;
-	int bits;
-
-	/* calc. number of bits / data byte */
-	/* databits + startbit and 1 stopbit */
-	if ((cflags & CSIZE) == CS7)
-		bits = 9;
-	else
-		bits = 10;
-
-	if (cflags & CSTOPB)     /* 2 stopbits ? */
-		bits++;
-
-	if (cflags & PARENB)     /* parity bit ? */
-		bits++;
-
-	/* calc timeout */
-	info->char_time_usec = ((bits * 1000000) / info->baud) + 1;
-	info->flush_time_usec = 4*info->char_time_usec;
-	if (info->flush_time_usec < MIN_FLUSH_TIME_USEC)
-		info->flush_time_usec = MIN_FLUSH_TIME_USEC;
-
-}
-
-/*
- * This function maps from the Bxxxx defines in asm/termbits.h into real
- * baud rates.
- */
-
-static int
-cflag_to_baud(unsigned int cflag)
-{
-	static int baud_table[] = {
-		0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400,
-		4800, 9600, 19200, 38400 };
-
-	static int ext_baud_table[] = {
-		0, 57600, 115200, 230400, 460800, 921600, 1843200, 6250000,
-                0, 0, 0, 0, 0, 0, 0, 0 };
-
-	if (cflag & CBAUDEX)
-		return ext_baud_table[(cflag & CBAUD) & ~CBAUDEX];
-	else
-		return baud_table[cflag & CBAUD];
-}
-
-/* and this maps to an etrax100 hardware baud constant */
-
-static unsigned char
-cflag_to_etrax_baud(unsigned int cflag)
-{
-	char retval;
-
-	static char baud_table[] = {
-		-1, -1, -1, -1, -1, -1, -1, 0, 1, 2, -1, 3, 4, 5, 6, 7 };
-
-	static char ext_baud_table[] = {
-		-1, 8, 9, 10, 11, 12, 13, 14, -1, -1, -1, -1, -1, -1, -1, -1 };
-
-	if (cflag & CBAUDEX)
-		retval = ext_baud_table[(cflag & CBAUD) & ~CBAUDEX];
-	else
-		retval = baud_table[cflag & CBAUD];
-
-	if (retval < 0) {
-		printk(KERN_WARNING "serdriver tried setting invalid baud rate, flags %x.\n", cflag);
-		retval = 5; /* choose default 9600 instead */
-	}
-
-	return retval | (retval << 4); /* choose same for both TX and RX */
-}
-
-
-/* Various static support functions */
-
-/* Functions to set or clear DTR/RTS on the requested line */
-/* It is complicated by the fact that RTS is a serial port register, while
- * DTR might not be implemented in the HW at all, and if it is, it can be on
- * any general port.
- */
-
-
-static inline void
-e100_dtr(struct e100_serial *info, int set)
-{
-	unsigned char mask = e100_modem_pins[info->line].dtr_mask;
-
-#ifdef SERIAL_DEBUG_IO
-	printk("ser%i dtr %i mask: 0x%02X\n", info->line, set, mask);
-	printk("ser%i shadow before 0x%02X get: %i\n",
-	       info->line, *e100_modem_pins[info->line].dtr_shadow,
-	       E100_DTR_GET(info));
-#endif
-	/* DTR is active low */
-	{
-		unsigned long flags;
-
-		local_irq_save(flags);
-		*e100_modem_pins[info->line].dtr_shadow &= ~mask;
-		*e100_modem_pins[info->line].dtr_shadow |= (set ? 0 : mask);
-		*e100_modem_pins[info->line].dtr_port = *e100_modem_pins[info->line].dtr_shadow;
-		local_irq_restore(flags);
-	}
-
-#ifdef SERIAL_DEBUG_IO
-	printk("ser%i shadow after 0x%02X get: %i\n",
-	       info->line, *e100_modem_pins[info->line].dtr_shadow,
-	       E100_DTR_GET(info));
-#endif
-}
-
-/* set = 0 means 3.3V on the pin, bitvalue: 0=active, 1=inactive
- *                                          0=0V    , 1=3.3V
- */
-static inline void
-e100_rts(struct e100_serial *info, int set)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	info->rx_ctrl &= ~E100_RTS_MASK;
-	info->rx_ctrl |= (set ? 0 : E100_RTS_MASK);  /* RTS is active low */
-	info->ioport[REG_REC_CTRL] = info->rx_ctrl;
-	local_irq_restore(flags);
-#ifdef SERIAL_DEBUG_IO
-	printk("ser%i rts %i\n", info->line, set);
-#endif
-}
-
-
-/* If this behaves as a modem, RI and CD is an output */
-static inline void
-e100_ri_out(struct e100_serial *info, int set)
-{
-	/* RI is active low */
-	{
-		unsigned char mask = e100_modem_pins[info->line].ri_mask;
-		unsigned long flags;
-
-		local_irq_save(flags);
-		*e100_modem_pins[info->line].ri_shadow &= ~mask;
-		*e100_modem_pins[info->line].ri_shadow |= (set ? 0 : mask);
-		*e100_modem_pins[info->line].ri_port = *e100_modem_pins[info->line].ri_shadow;
-		local_irq_restore(flags);
-	}
-}
-static inline void
-e100_cd_out(struct e100_serial *info, int set)
-{
-	/* CD is active low */
-	{
-		unsigned char mask = e100_modem_pins[info->line].cd_mask;
-		unsigned long flags;
-
-		local_irq_save(flags);
-		*e100_modem_pins[info->line].cd_shadow &= ~mask;
-		*e100_modem_pins[info->line].cd_shadow |= (set ? 0 : mask);
-		*e100_modem_pins[info->line].cd_port = *e100_modem_pins[info->line].cd_shadow;
-		local_irq_restore(flags);
-	}
-}
-
-static inline void
-e100_disable_rx(struct e100_serial *info)
-{
-	/* disable the receiver */
-	info->ioport[REG_REC_CTRL] =
-		(info->rx_ctrl &= ~IO_MASK(R_SERIAL0_REC_CTRL, rec_enable));
-}
-
-static inline void
-e100_enable_rx(struct e100_serial *info)
-{
-	/* enable the receiver */
-	info->ioport[REG_REC_CTRL] =
-		(info->rx_ctrl |= IO_MASK(R_SERIAL0_REC_CTRL, rec_enable));
-}
-
-/* the rx DMA uses both the dma_descr and the dma_eop interrupts */
-
-static inline void
-e100_disable_rxdma_irq(struct e100_serial *info)
-{
-#ifdef SERIAL_DEBUG_INTR
-	printk("rxdma_irq(%d): 0\n",info->line);
-#endif
-	DINTR1(DEBUG_LOG(info->line,"IRQ disable_rxdma_irq %i\n", info->line));
-	*R_IRQ_MASK2_CLR = (info->irq << 2) | (info->irq << 3);
-}
-
-static inline void
-e100_enable_rxdma_irq(struct e100_serial *info)
-{
-#ifdef SERIAL_DEBUG_INTR
-	printk("rxdma_irq(%d): 1\n",info->line);
-#endif
-	DINTR1(DEBUG_LOG(info->line,"IRQ enable_rxdma_irq %i\n", info->line));
-	*R_IRQ_MASK2_SET = (info->irq << 2) | (info->irq << 3);
-}
-
-/* the tx DMA uses only dma_descr interrupt */
-
-static void e100_disable_txdma_irq(struct e100_serial *info)
-{
-#ifdef SERIAL_DEBUG_INTR
-	printk("txdma_irq(%d): 0\n",info->line);
-#endif
-	DINTR1(DEBUG_LOG(info->line,"IRQ disable_txdma_irq %i\n", info->line));
-	*R_IRQ_MASK2_CLR = info->irq;
-}
-
-static void e100_enable_txdma_irq(struct e100_serial *info)
-{
-#ifdef SERIAL_DEBUG_INTR
-	printk("txdma_irq(%d): 1\n",info->line);
-#endif
-	DINTR1(DEBUG_LOG(info->line,"IRQ enable_txdma_irq %i\n", info->line));
-	*R_IRQ_MASK2_SET = info->irq;
-}
-
-static void e100_disable_txdma_channel(struct e100_serial *info)
-{
-	unsigned long flags;
-
-	/* Disable output DMA channel for the serial port in question
-	 * ( set to something other than serialX)
-	 */
-	local_irq_save(flags);
-	DFLOW(DEBUG_LOG(info->line, "disable_txdma_channel %i\n", info->line));
-	if (info->line == 0) {
-		if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma6)) ==
-		    IO_STATE(R_GEN_CONFIG, dma6, serial0)) {
-			genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma6);
-			genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, unused);
-		}
-	} else if (info->line == 1) {
-		if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma8)) ==
-		    IO_STATE(R_GEN_CONFIG, dma8, serial1)) {
-			genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma8);
-			genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, usb);
-		}
-	} else if (info->line == 2) {
-		if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma2)) ==
-		    IO_STATE(R_GEN_CONFIG, dma2, serial2)) {
-			genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma2);
-			genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, par0);
-		}
-	} else if (info->line == 3) {
-		if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma4)) ==
-		    IO_STATE(R_GEN_CONFIG, dma4, serial3)) {
-			genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma4);
-			genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma4, par1);
-		}
-	}
-	*R_GEN_CONFIG = genconfig_shadow;
-	local_irq_restore(flags);
-}
-
-
-static void e100_enable_txdma_channel(struct e100_serial *info)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	DFLOW(DEBUG_LOG(info->line, "enable_txdma_channel %i\n", info->line));
-	/* Enable output DMA channel for the serial port in question */
-	if (info->line == 0) {
-		genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma6);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, serial0);
-	} else if (info->line == 1) {
-		genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma8);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, serial1);
-	} else if (info->line == 2) {
-		genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma2);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, serial2);
-	} else if (info->line == 3) {
-		genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma4);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma4, serial3);
-	}
-	*R_GEN_CONFIG = genconfig_shadow;
-	local_irq_restore(flags);
-}
-
-static void e100_disable_rxdma_channel(struct e100_serial *info)
-{
-	unsigned long flags;
-
-	/* Disable input DMA channel for the serial port in question
-	 * ( set to something other than serialX)
-	 */
-	local_irq_save(flags);
-	if (info->line == 0) {
-		if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma7)) ==
-		    IO_STATE(R_GEN_CONFIG, dma7, serial0)) {
-			genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma7);
-			genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma7, unused);
-		}
-	} else if (info->line == 1) {
-		if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma9)) ==
-		    IO_STATE(R_GEN_CONFIG, dma9, serial1)) {
-			genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma9);
-			genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma9, usb);
-		}
-	} else if (info->line == 2) {
-		if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma3)) ==
-		    IO_STATE(R_GEN_CONFIG, dma3, serial2)) {
-			genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma3);
-			genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma3, par0);
-		}
-	} else if (info->line == 3) {
-		if ((genconfig_shadow & IO_MASK(R_GEN_CONFIG, dma5)) ==
-		    IO_STATE(R_GEN_CONFIG, dma5, serial3)) {
-			genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma5);
-			genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma5, par1);
-		}
-	}
-	*R_GEN_CONFIG = genconfig_shadow;
-	local_irq_restore(flags);
-}
-
-
-static void e100_enable_rxdma_channel(struct e100_serial *info)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	/* Enable input DMA channel for the serial port in question */
-	if (info->line == 0) {
-		genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma7);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma7, serial0);
-	} else if (info->line == 1) {
-		genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma9);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma9, serial1);
-	} else if (info->line == 2) {
-		genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma3);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma3, serial2);
-	} else if (info->line == 3) {
-		genconfig_shadow &=  ~IO_MASK(R_GEN_CONFIG, dma5);
-		genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma5, serial3);
-	}
-	*R_GEN_CONFIG = genconfig_shadow;
-	local_irq_restore(flags);
-}
-
-#ifdef SERIAL_HANDLE_EARLY_ERRORS
-/* in order to detect and fix errors on the first byte
-   we have to use the serial interrupts as well. */
-
-static inline void
-e100_disable_serial_data_irq(struct e100_serial *info)
-{
-#ifdef SERIAL_DEBUG_INTR
-	printk("ser_irq(%d): 0\n",info->line);
-#endif
-	DINTR1(DEBUG_LOG(info->line,"IRQ disable data_irq %i\n", info->line));
-	*R_IRQ_MASK1_CLR = (1U << (8+2*info->line));
-}
-
-static inline void
-e100_enable_serial_data_irq(struct e100_serial *info)
-{
-#ifdef SERIAL_DEBUG_INTR
-	printk("ser_irq(%d): 1\n",info->line);
-	printk("**** %d = %d\n",
-	       (8+2*info->line),
-	       (1U << (8+2*info->line)));
-#endif
-	DINTR1(DEBUG_LOG(info->line,"IRQ enable data_irq %i\n", info->line));
-	*R_IRQ_MASK1_SET = (1U << (8+2*info->line));
-}
-#endif
-
-static inline void
-e100_disable_serial_tx_ready_irq(struct e100_serial *info)
-{
-#ifdef SERIAL_DEBUG_INTR
-	printk("ser_tx_irq(%d): 0\n",info->line);
-#endif
-	DINTR1(DEBUG_LOG(info->line,"IRQ disable ready_irq %i\n", info->line));
-	*R_IRQ_MASK1_CLR = (1U << (8+1+2*info->line));
-}
-
-static inline void
-e100_enable_serial_tx_ready_irq(struct e100_serial *info)
-{
-#ifdef SERIAL_DEBUG_INTR
-	printk("ser_tx_irq(%d): 1\n",info->line);
-	printk("**** %d = %d\n",
-	       (8+1+2*info->line),
-	       (1U << (8+1+2*info->line)));
-#endif
-	DINTR2(DEBUG_LOG(info->line,"IRQ enable ready_irq %i\n", info->line));
-	*R_IRQ_MASK1_SET = (1U << (8+1+2*info->line));
-}
-
-static inline void e100_enable_rx_irq(struct e100_serial *info)
-{
-	if (info->uses_dma_in)
-		e100_enable_rxdma_irq(info);
-	else
-		e100_enable_serial_data_irq(info);
-}
-static inline void e100_disable_rx_irq(struct e100_serial *info)
-{
-	if (info->uses_dma_in)
-		e100_disable_rxdma_irq(info);
-	else
-		e100_disable_serial_data_irq(info);
-}
-
-#if defined(CONFIG_ETRAX_RS485)
-/* Enable RS-485 mode on selected port. This is UGLY. */
-static int
-e100_enable_rs485(struct tty_struct *tty, struct serial_rs485 *r)
-{
-	struct e100_serial * info = (struct e100_serial *)tty->driver_data;
-
-#if defined(CONFIG_ETRAX_RS485_ON_PA)
-	*R_PORT_PA_DATA = port_pa_data_shadow |= (1 << rs485_pa_bit);
-#endif
-
-	info->rs485 = *r;
-
-	/* Maximum delay before RTS equal to 1000 */
-	if (info->rs485.delay_rts_before_send >= 1000)
-		info->rs485.delay_rts_before_send = 1000;
-
-/*	printk("rts: on send = %i, after = %i, enabled = %i",
-		    info->rs485.rts_on_send,
-		    info->rs485.rts_after_sent,
-		    info->rs485.enabled
-	);
-*/
-	return 0;
-}
-
-static int
-e100_write_rs485(struct tty_struct *tty,
-                 const unsigned char *buf, int count)
-{
-	struct e100_serial * info = (struct e100_serial *)tty->driver_data;
-	int old_value = (info->rs485.flags) & SER_RS485_ENABLED;
-
-	/* rs485 is always implicitly enabled if we're using the ioctl()
-	 * but it doesn't have to be set in the serial_rs485
-	 * (to be backward compatible with old apps)
-	 * So we store, set and restore it.
-	 */
-	info->rs485.flags |= SER_RS485_ENABLED;
-	/* rs_write now deals with RS485 if enabled */
-	count = rs_write(tty, buf, count);
-	if (!old_value)
-		info->rs485.flags &= ~(SER_RS485_ENABLED);
-	return count;
-}
-
-#ifdef CONFIG_ETRAX_FAST_TIMER
-/* Timer function to toggle RTS when using FAST_TIMER */
-static void rs485_toggle_rts_timer_function(unsigned long data)
-{
-	struct e100_serial *info = (struct e100_serial *)data;
-
-	fast_timers_rs485[info->line].function = NULL;
-	e100_rts(info, (info->rs485.flags & SER_RS485_RTS_AFTER_SEND));
-#if defined(CONFIG_ETRAX_RS485_DISABLE_RECEIVER)
-	e100_enable_rx(info);
-	e100_enable_rx_irq(info);
-#endif
-}
-#endif
-#endif /* CONFIG_ETRAX_RS485 */
-
-/*
- * ------------------------------------------------------------
- * rs_stop() and rs_start()
- *
- * This routines are called before setting or resetting tty->stopped.
- * They enable or disable transmitter using the XOFF registers, as necessary.
- * ------------------------------------------------------------
- */
-
-static void
-rs_stop(struct tty_struct *tty)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	if (info) {
-		unsigned long flags;
-		unsigned long xoff;
-
-		local_irq_save(flags);
-		DFLOW(DEBUG_LOG(info->line, "XOFF rs_stop xmit %i\n",
-				CIRC_CNT(info->xmit.head,
-					 info->xmit.tail,SERIAL_XMIT_SIZE)));
-
-		xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char,
-				STOP_CHAR(info->port.tty));
-		xoff |= IO_STATE(R_SERIAL0_XOFF, tx_stop, stop);
-		if (I_IXON(tty))
-			xoff |= IO_STATE(R_SERIAL0_XOFF, auto_xoff, enable);
-
-		*((unsigned long *)&info->ioport[REG_XOFF]) = xoff;
-		local_irq_restore(flags);
-	}
-}
-
-static void
-rs_start(struct tty_struct *tty)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	if (info) {
-		unsigned long flags;
-		unsigned long xoff;
-
-		local_irq_save(flags);
-		DFLOW(DEBUG_LOG(info->line, "XOFF rs_start xmit %i\n",
-				CIRC_CNT(info->xmit.head,
-					 info->xmit.tail,SERIAL_XMIT_SIZE)));
-		xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(tty));
-		xoff |= IO_STATE(R_SERIAL0_XOFF, tx_stop, enable);
-		if (I_IXON(tty))
-			xoff |= IO_STATE(R_SERIAL0_XOFF, auto_xoff, enable);
-
-		*((unsigned long *)&info->ioport[REG_XOFF]) = xoff;
-		if (!info->uses_dma_out &&
-		    info->xmit.head != info->xmit.tail && info->xmit.buf)
-			e100_enable_serial_tx_ready_irq(info);
-
-		local_irq_restore(flags);
-	}
-}
-
-/*
- * ----------------------------------------------------------------------
- *
- * Here starts the interrupt handling routines.  All of the following
- * subroutines are declared as inline and are folded into
- * rs_interrupt().  They were separated out for readability's sake.
- *
- * Note: rs_interrupt() is a "fast" interrupt, which means that it
- * runs with interrupts turned off.  People who may want to modify
- * rs_interrupt() should try to keep the interrupt handler as fast as
- * possible.  After you are done making modifications, it is not a bad
- * idea to do:
- *
- * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c
- *
- * and look at the resulting assemble code in serial.s.
- *
- * 				- Ted Ts'o (tytso@mit.edu), 7-Mar-93
- * -----------------------------------------------------------------------
- */
-
-/*
- * This routine is used by the interrupt handler to schedule
- * processing in the software interrupt portion of the driver.
- */
-static void rs_sched_event(struct e100_serial *info, int event)
-{
-	if (info->event & (1 << event))
-		return;
-	info->event |= 1 << event;
-	schedule_work(&info->work);
-}
-
-/* The output DMA channel is free - use it to send as many chars as possible
- * NOTES:
- *   We don't pay attention to info->x_char, which means if the TTY wants to
- *   use XON/XOFF it will set info->x_char but we won't send any X char!
- *
- *   To implement this, we'd just start a DMA send of 1 byte pointing at a
- *   buffer containing the X char, and skip updating xmit. We'd also have to
- *   check if the last sent char was the X char when we enter this function
- *   the next time, to avoid updating xmit with the sent X value.
- */
-
-static void
-transmit_chars_dma(struct e100_serial *info)
-{
-	unsigned int c, sentl;
-	struct etrax_dma_descr *descr;
-
-	/* acknowledge both dma_descr and dma_eop irq in R_DMA_CHx_CLR_INTR */
-	*info->oclrintradr =
-		IO_STATE(R_DMA_CH6_CLR_INTR, clr_descr, do) |
-		IO_STATE(R_DMA_CH6_CLR_INTR, clr_eop, do);
-
-#ifdef SERIAL_DEBUG_INTR
-	if (info->line == SERIAL_DEBUG_LINE)
-		printk("tc\n");
-#endif
-	if (!info->tr_running) {
-		/* weirdo... we shouldn't get here! */
-		printk(KERN_WARNING "Achtung: transmit_chars_dma with !tr_running\n");
-		return;
-	}
-
-	descr = &info->tr_descr;
-
-	/* first get the amount of bytes sent during the last DMA transfer,
-	   and update xmit accordingly */
-
-	/* if the stop bit was not set, all data has been sent */
-	if (!(descr->status & d_stop)) {
-		sentl = descr->sw_len;
-	} else
-		/* otherwise we find the amount of data sent here */
-		sentl = descr->hw_len;
-
-	DFLOW(DEBUG_LOG(info->line, "TX %i done\n", sentl));
-
-	/* update stats */
-	info->icount.tx += sentl;
-
-	/* update xmit buffer */
-	info->xmit.tail = (info->xmit.tail + sentl) & (SERIAL_XMIT_SIZE - 1);
-
-	/* if there is only a few chars left in the buf, wake up the blocked
-	   write if any */
-	if (CIRC_CNT(info->xmit.head,
-		     info->xmit.tail,
-		     SERIAL_XMIT_SIZE) < WAKEUP_CHARS)
-		rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
-
-	/* find out the largest amount of consecutive bytes we want to send now */
-
-	c = CIRC_CNT_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-
-	/* Don't send all in one DMA transfer - divide it so we wake up
-	 * application before all is sent
-	 */
-
-	if (c >= 4*WAKEUP_CHARS)
-		c = c/2;
-
-	if (c <= 0) {
-		/* our job here is done, don't schedule any new DMA transfer */
-		info->tr_running = 0;
-
-#if defined(CONFIG_ETRAX_RS485) && defined(CONFIG_ETRAX_FAST_TIMER)
-		if (info->rs485.flags & SER_RS485_ENABLED) {
-			/* Set a short timer to toggle RTS */
-			start_one_shot_timer(&fast_timers_rs485[info->line],
-			                     rs485_toggle_rts_timer_function,
-			                     (unsigned long)info,
-			                     info->char_time_usec*2,
-			                     "RS-485");
-		}
-#endif /* RS485 */
-		return;
-	}
-
-	/* ok we can schedule a dma send of c chars starting at info->xmit.tail */
-	/* set up the descriptor correctly for output */
-	DFLOW(DEBUG_LOG(info->line, "TX %i\n", c));
-	descr->ctrl = d_int | d_eol | d_wait; /* Wait needed for tty_wait_until_sent() */
-	descr->sw_len = c;
-	descr->buf = virt_to_phys(info->xmit.buf + info->xmit.tail);
-	descr->status = 0;
-
-	*info->ofirstadr = virt_to_phys(descr); /* write to R_DMAx_FIRST */
-	*info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, start);
-
-	/* DMA is now running (hopefully) */
-} /* transmit_chars_dma */
-
-static void
-start_transmit(struct e100_serial *info)
-{
-#if 0
-	if (info->line == SERIAL_DEBUG_LINE)
-		printk("x\n");
-#endif
-
-	info->tr_descr.sw_len = 0;
-	info->tr_descr.hw_len = 0;
-	info->tr_descr.status = 0;
-	info->tr_running = 1;
-	if (info->uses_dma_out)
-		transmit_chars_dma(info);
-	else
-		e100_enable_serial_tx_ready_irq(info);
-} /* start_transmit */
-
-#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
-static int serial_fast_timer_started = 0;
-static int serial_fast_timer_expired = 0;
-static void flush_timeout_function(unsigned long data);
-#define START_FLUSH_FAST_TIMER_TIME(info, string, usec) {\
-  unsigned long timer_flags; \
-  local_irq_save(timer_flags); \
-  if (fast_timers[info->line].function == NULL) { \
-    serial_fast_timer_started++; \
-    TIMERD(DEBUG_LOG(info->line, "start_timer %i ", info->line)); \
-    TIMERD(DEBUG_LOG(info->line, "num started: %i\n", serial_fast_timer_started)); \
-    start_one_shot_timer(&fast_timers[info->line], \
-                         flush_timeout_function, \
-                         (unsigned long)info, \
-                         (usec), \
-                         string); \
-  } \
-  else { \
-    TIMERD(DEBUG_LOG(info->line, "timer %i already running\n", info->line)); \
-  } \
-  local_irq_restore(timer_flags); \
-}
-#define START_FLUSH_FAST_TIMER(info, string) START_FLUSH_FAST_TIMER_TIME(info, string, info->flush_time_usec)
-
-#else
-#define START_FLUSH_FAST_TIMER_TIME(info, string, usec)
-#define START_FLUSH_FAST_TIMER(info, string)
-#endif
-
-static struct etrax_recv_buffer *
-alloc_recv_buffer(unsigned int size)
-{
-	struct etrax_recv_buffer *buffer;
-
-	buffer = kmalloc(sizeof *buffer + size, GFP_ATOMIC);
-	if (!buffer)
-		return NULL;
-
-	buffer->next = NULL;
-	buffer->length = 0;
-	buffer->error = TTY_NORMAL;
-
-	return buffer;
-}
-
-static void
-append_recv_buffer(struct e100_serial *info, struct etrax_recv_buffer *buffer)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-
-	if (!info->first_recv_buffer)
-		info->first_recv_buffer = buffer;
-	else
-		info->last_recv_buffer->next = buffer;
-
-	info->last_recv_buffer = buffer;
-
-	info->recv_cnt += buffer->length;
-	if (info->recv_cnt > info->max_recv_cnt)
-		info->max_recv_cnt = info->recv_cnt;
-
-	local_irq_restore(flags);
-}
-
-static int
-add_char_and_flag(struct e100_serial *info, unsigned char data, unsigned char flag)
-{
-	struct etrax_recv_buffer *buffer;
-	if (info->uses_dma_in) {
-		buffer = alloc_recv_buffer(4);
-		if (!buffer)
-			return 0;
-
-		buffer->length = 1;
-		buffer->error = flag;
-		buffer->buffer[0] = data;
-
-		append_recv_buffer(info, buffer);
-
-		info->icount.rx++;
-	} else {
-		tty_insert_flip_char(&info->port, data, flag);
-		info->icount.rx++;
-	}
-
-	return 1;
-}
-
-static unsigned int handle_descr_data(struct e100_serial *info,
-				      struct etrax_dma_descr *descr,
-				      unsigned int recvl)
-{
-	struct etrax_recv_buffer *buffer = phys_to_virt(descr->buf) - sizeof *buffer;
-
-	if (info->recv_cnt + recvl > 65536) {
-		printk(KERN_WARNING
-		       "%s: Too much pending incoming serial data! Dropping %u bytes.\n", __func__, recvl);
-		return 0;
-	}
-
-	buffer->length = recvl;
-
-	if (info->errorcode == ERRCODE_SET_BREAK)
-		buffer->error = TTY_BREAK;
-	info->errorcode = 0;
-
-	append_recv_buffer(info, buffer);
-
-	buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE);
-	if (!buffer)
-		panic("%s: Failed to allocate memory for receive buffer!\n", __func__);
-
-	descr->buf = virt_to_phys(buffer->buffer);
-
-	return recvl;
-}
-
-static unsigned int handle_all_descr_data(struct e100_serial *info)
-{
-	struct etrax_dma_descr *descr;
-	unsigned int recvl;
-	unsigned int ret = 0;
-
-	while (1)
-	{
-		descr = &info->rec_descr[info->cur_rec_descr];
-
-		if (descr == phys_to_virt(*info->idescradr))
-			break;
-
-		if (++info->cur_rec_descr == SERIAL_RECV_DESCRIPTORS)
-			info->cur_rec_descr = 0;
-
-		/* find out how many bytes were read */
-
-		/* if the eop bit was not set, all data has been received */
-		if (!(descr->status & d_eop)) {
-			recvl = descr->sw_len;
-		} else {
-			/* otherwise we find the amount of data received here */
-			recvl = descr->hw_len;
-		}
-
-		/* Reset the status information */
-		descr->status = 0;
-
-		DFLOW(  DEBUG_LOG(info->line, "RX %lu\n", recvl);
-			if (info->port.tty->stopped) {
-				unsigned char *buf = phys_to_virt(descr->buf);
-				DEBUG_LOG(info->line, "rx 0x%02X\n", buf[0]);
-				DEBUG_LOG(info->line, "rx 0x%02X\n", buf[1]);
-				DEBUG_LOG(info->line, "rx 0x%02X\n", buf[2]);
-			}
-			);
-
-		/* update stats */
-		info->icount.rx += recvl;
-
-		ret += handle_descr_data(info, descr, recvl);
-	}
-
-	return ret;
-}
-
-static void receive_chars_dma(struct e100_serial *info)
-{
-	struct tty_struct *tty;
-	unsigned char rstat;
-
-	/* Acknowledge both dma_descr and dma_eop irq in R_DMA_CHx_CLR_INTR */
-	*info->iclrintradr =
-		IO_STATE(R_DMA_CH6_CLR_INTR, clr_descr, do) |
-		IO_STATE(R_DMA_CH6_CLR_INTR, clr_eop, do);
-
-	tty = info->port.tty;
-	if (!tty) /* Something wrong... */
-		return;
-
-#ifdef SERIAL_HANDLE_EARLY_ERRORS
-	if (info->uses_dma_in)
-		e100_enable_serial_data_irq(info);
-#endif
-
-	if (info->errorcode == ERRCODE_INSERT_BREAK)
-		add_char_and_flag(info, '\0', TTY_BREAK);
-
-	handle_all_descr_data(info);
-
-	/* Read the status register to detect errors */
-	rstat = info->ioport[REG_STATUS];
-	if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect) ) {
-		DFLOW(DEBUG_LOG(info->line, "XOFF detect stat %x\n", rstat));
-	}
-
-	if (rstat & SER_ERROR_MASK) {
-		/* If we got an error, we must reset it by reading the
-		 * data_in field
-		 */
-		unsigned char data = info->ioport[REG_DATA];
-
-		DEBUG_LOG(info->line, "#dERR: s d 0x%04X\n",
-			  ((rstat & SER_ERROR_MASK) << 8) | data);
-
-		if (rstat & SER_PAR_ERR_MASK)
-			add_char_and_flag(info, data, TTY_PARITY);
-		else if (rstat & SER_OVERRUN_MASK)
-			add_char_and_flag(info, data, TTY_OVERRUN);
-		else if (rstat & SER_FRAMING_ERR_MASK)
-			add_char_and_flag(info, data, TTY_FRAME);
-	}
-
-	START_FLUSH_FAST_TIMER(info, "receive_chars");
-
-	/* Restart the receiving DMA */
-	*info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, restart);
-}
-
-static int start_recv_dma(struct e100_serial *info)
-{
-	struct etrax_dma_descr *descr = info->rec_descr;
-	struct etrax_recv_buffer *buffer;
-        int i;
-
-	/* Set up the receiving descriptors */
-	for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++) {
-		buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE);
-		if (!buffer)
-			panic("%s: Failed to allocate memory for receive buffer!\n", __func__);
-
-		descr[i].ctrl = d_int;
-		descr[i].buf = virt_to_phys(buffer->buffer);
-		descr[i].sw_len = SERIAL_DESCR_BUF_SIZE;
-		descr[i].hw_len = 0;
-		descr[i].status = 0;
-		descr[i].next = virt_to_phys(&descr[i+1]);
-	}
-
-	/* Link the last descriptor to the first */
-	descr[i-1].next = virt_to_phys(&descr[0]);
-
-	/* Start with the first descriptor in the list */
-	info->cur_rec_descr = 0;
-
-	/* Start the DMA */
-	*info->ifirstadr = virt_to_phys(&descr[info->cur_rec_descr]);
-	*info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, start);
-
-	/* Input DMA should be running now */
-	return 1;
-}
-
-static void
-start_receive(struct e100_serial *info)
-{
-	if (info->uses_dma_in) {
-		/* reset the input dma channel to be sure it works */
-
-		*info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset);
-		while (IO_EXTRACT(R_DMA_CH6_CMD, cmd, *info->icmdadr) ==
-		       IO_STATE_VALUE(R_DMA_CH6_CMD, cmd, reset));
-
-		start_recv_dma(info);
-	}
-}
-
-
-/* the bits in the MASK2 register are laid out like this:
-   DMAI_EOP DMAI_DESCR DMAO_EOP DMAO_DESCR
-   where I is the input channel and O is the output channel for the port.
-   info->irq is the bit number for the DMAO_DESCR so to check the others we
-   shift info->irq to the left.
-*/
-
-/* dma output channel interrupt handler
-   this interrupt is called from DMA2(ser2), DMA4(ser3), DMA6(ser0) or
-   DMA8(ser1) when they have finished a descriptor with the intr flag set.
-*/
-
-static irqreturn_t
-tr_interrupt(int irq, void *dev_id)
-{
-	struct e100_serial *info;
-	unsigned long ireg;
-	int i;
-	int handled = 0;
-
-	/* find out the line that caused this irq and get it from rs_table */
-
-	ireg = *R_IRQ_MASK2_RD;  /* get the active irq bits for the dma channels */
-
-	for (i = 0; i < NR_PORTS; i++) {
-		info = rs_table + i;
-		if (!info->enabled || !info->uses_dma_out)
-			continue;
-		/* check for dma_descr (don't need to check for dma_eop in output dma for serial */
-		if (ireg & info->irq) {
-			handled = 1;
-			/* we can send a new dma bunch. make it so. */
-			DINTR2(DEBUG_LOG(info->line, "tr_interrupt %i\n", i));
-			/* Read jiffies_usec first,
-			 * we want this time to be as late as possible
-			 */
-			info->last_tx_active_usec = GET_JIFFIES_USEC();
-			info->last_tx_active = jiffies;
-			transmit_chars_dma(info);
-		}
-
-		/* FIXME: here we should really check for a change in the
-		   status lines and if so call status_handle(info) */
-	}
-	return IRQ_RETVAL(handled);
-} /* tr_interrupt */
-
-/* dma input channel interrupt handler */
-
-static irqreturn_t
-rec_interrupt(int irq, void *dev_id)
-{
-	struct e100_serial *info;
-	unsigned long ireg;
-	int i;
-	int handled = 0;
-
-	/* find out the line that caused this irq and get it from rs_table */
-
-	ireg = *R_IRQ_MASK2_RD;  /* get the active irq bits for the dma channels */
-
-	for (i = 0; i < NR_PORTS; i++) {
-		info = rs_table + i;
-		if (!info->enabled || !info->uses_dma_in)
-			continue;
-		/* check for both dma_eop and dma_descr for the input dma channel */
-		if (ireg & ((info->irq << 2) | (info->irq << 3))) {
-			handled = 1;
-			/* we have received something */
-			receive_chars_dma(info);
-		}
-
-		/* FIXME: here we should really check for a change in the
-		   status lines and if so call status_handle(info) */
-	}
-	return IRQ_RETVAL(handled);
-} /* rec_interrupt */
-
-static int force_eop_if_needed(struct e100_serial *info)
-{
-	/* We check data_avail bit to determine if data has
-	 * arrived since last time
-	 */
-	unsigned char rstat = info->ioport[REG_STATUS];
-
-	/* error or datavail? */
-	if (rstat & SER_ERROR_MASK) {
-		/* Some error has occurred. If there has been valid data, an
-		 * EOP interrupt will be made automatically. If no data, the
-		 * normal ser_interrupt should be enabled and handle it.
-		 * So do nothing!
-		 */
-		DEBUG_LOG(info->line, "timeout err: rstat 0x%03X\n",
-		          rstat | (info->line << 8));
-		return 0;
-	}
-
-	if (rstat & SER_DATA_AVAIL_MASK) {
-		/* Ok data, no error, count it */
-		TIMERD(DEBUG_LOG(info->line, "timeout: rstat 0x%03X\n",
-		          rstat | (info->line << 8)));
-		/* Read data to clear status flags */
-		(void)info->ioport[REG_DATA];
-
-		info->forced_eop = 0;
-		START_FLUSH_FAST_TIMER(info, "magic");
-		return 0;
-	}
-
-	/* hit the timeout, force an EOP for the input
-	 * dma channel if we haven't already
-	 */
-	if (!info->forced_eop) {
-		info->forced_eop = 1;
-		TIMERD(DEBUG_LOG(info->line, "timeout EOP %i\n", info->line));
-		FORCE_EOP(info);
-	}
-
-	return 1;
-}
-
-static void flush_to_flip_buffer(struct e100_serial *info)
-{
-	struct etrax_recv_buffer *buffer;
-	unsigned long flags;
-
-	local_irq_save(flags);
-
-	while ((buffer = info->first_recv_buffer) != NULL) {
-		unsigned int count = buffer->length;
-
-		tty_insert_flip_string(&info->port, buffer->buffer, count);
-		info->recv_cnt -= count;
-
-		if (count == buffer->length) {
-			info->first_recv_buffer = buffer->next;
-			kfree(buffer);
-		} else {
-			buffer->length -= count;
-			memmove(buffer->buffer, buffer->buffer + count, buffer->length);
-			buffer->error = TTY_NORMAL;
-		}
-	}
-
-	if (!info->first_recv_buffer)
-		info->last_recv_buffer = NULL;
-
-	local_irq_restore(flags);
-
-	/* This includes a check for low-latency */
-	tty_flip_buffer_push(&info->port);
-}
-
-static void check_flush_timeout(struct e100_serial *info)
-{
-	/* Flip what we've got (if we can) */
-	flush_to_flip_buffer(info);
-
-	/* We might need to flip later, but not to fast
-	 * since the system is busy processing input... */
-	if (info->first_recv_buffer)
-		START_FLUSH_FAST_TIMER_TIME(info, "flip", 2000);
-
-	/* Force eop last, since data might have come while we're processing
-	 * and if we started the slow timer above, we won't start a fast
-	 * below.
-	 */
-	force_eop_if_needed(info);
-}
-
-#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
-static void flush_timeout_function(unsigned long data)
-{
-	struct e100_serial *info = (struct e100_serial *)data;
-
-	fast_timers[info->line].function = NULL;
-	serial_fast_timer_expired++;
-	TIMERD(DEBUG_LOG(info->line, "flush_timeout %i ", info->line));
-	TIMERD(DEBUG_LOG(info->line, "num expired: %i\n", serial_fast_timer_expired));
-	check_flush_timeout(info);
-}
-
-#else
-
-/* dma fifo/buffer timeout handler
-   forces an end-of-packet for the dma input channel if no chars
-   have been received for CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS/100 s.
-*/
-
-static struct timer_list flush_timer;
-
-static void
-timed_flush_handler(struct timer_list *unused)
-{
-	struct e100_serial *info;
-	int i;
-
-	for (i = 0; i < NR_PORTS; i++) {
-		info = rs_table + i;
-		if (info->uses_dma_in)
-			check_flush_timeout(info);
-	}
-
-	/* restart flush timer */
-	mod_timer(&flush_timer, jiffies + CONFIG_ETRAX_SERIAL_RX_TIMEOUT_TICKS);
-}
-#endif
-
-#ifdef SERIAL_HANDLE_EARLY_ERRORS
-
-/* If there is an error (ie break) when the DMA is running and
- * there are no bytes in the fifo the DMA is stopped and we get no
- * eop interrupt. Thus we have to monitor the first bytes on a DMA
- * transfer, and if it is without error we can turn the serial
- * interrupts off.
- */
-
-/*
-BREAK handling on ETRAX 100:
-ETRAX will generate interrupt although there is no stop bit between the
-characters.
-
-Depending on how long the break sequence is, the end of the breaksequence
-will look differently:
-| indicates start/end of a character.
-
-B= Break character (0x00) with framing error.
-E= Error byte with parity error received after B characters.
-F= "Faked" valid byte received immediately after B characters.
-V= Valid byte
-
-1.
-    B          BL         ___________________________ V
-.._|__________|__________|                           |valid data |
-
-Multiple frame errors with data == 0x00 (B),
-the timing matches up "perfectly" so no extra ending char is detected.
-The RXD pin is 1 in the last interrupt, in that case
-we set info->errorcode = ERRCODE_INSERT_BREAK, but we can't really
-know if another byte will come and this really is case 2. below
-(e.g F=0xFF or 0xFE)
-If RXD pin is 0 we can expect another character (see 2. below).
-
-
-2.
-
-    B          B          E or F__________________..__ V
-.._|__________|__________|______    |                 |valid data
-                          "valid" or
-                          parity error
-
-Multiple frame errors with data == 0x00 (B),
-but the part of the break trigs is interpreted as a start bit (and possibly
-some 0 bits followed by a number of 1 bits and a stop bit).
-Depending on parity settings etc. this last character can be either
-a fake "valid" char (F) or have a parity error (E).
-
-If the character is valid it will be put in the buffer,
-we set info->errorcode = ERRCODE_SET_BREAK so the receive interrupt
-will set the flags so the tty will handle it,
-if it's an error byte it will not be put in the buffer
-and we set info->errorcode = ERRCODE_INSERT_BREAK.
-
-To distinguish a V byte in 1. from an F byte in 2. we keep a timestamp
-of the last faulty char (B) and compares it with the current time:
-If the time elapsed time is less then 2*char_time_usec we will assume
-it's a faked F char and not a Valid char and set
-info->errorcode = ERRCODE_SET_BREAK.
-
-Flaws in the above solution:
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-We use the timer to distinguish a F character from a V character,
-if a V character is to close after the break we might make the wrong decision.
-
-TODO: The break will be delayed until an F or V character is received.
-
-*/
-
-static void handle_ser_rx_interrupt_no_dma(struct e100_serial *info)
-{
-	unsigned long data_read;
-
-	/* Read data and status at the same time */
-	data_read = *((unsigned long *)&info->ioport[REG_DATA_STATUS32]);
-more_data:
-	if (data_read & IO_MASK(R_SERIAL0_READ, xoff_detect) ) {
-		DFLOW(DEBUG_LOG(info->line, "XOFF detect\n", 0));
-	}
-	DINTR2(DEBUG_LOG(info->line, "ser_rx   %c\n", IO_EXTRACT(R_SERIAL0_READ, data_in, data_read)));
-
-	if (data_read & ( IO_MASK(R_SERIAL0_READ, framing_err) |
-			  IO_MASK(R_SERIAL0_READ, par_err) |
-			  IO_MASK(R_SERIAL0_READ, overrun) )) {
-		/* An error */
-		info->last_rx_active_usec = GET_JIFFIES_USEC();
-		info->last_rx_active = jiffies;
-		DINTR1(DEBUG_LOG(info->line, "ser_rx err stat_data %04X\n", data_read));
-		DLOG_INT_TRIG(
-		if (!log_int_trig1_pos) {
-			log_int_trig1_pos = log_int_pos;
-			log_int(rdpc(), 0, 0);
-		}
-		);
-
-
-		if ( ((data_read & IO_MASK(R_SERIAL0_READ, data_in)) == 0) &&
-		     (data_read & IO_MASK(R_SERIAL0_READ, framing_err)) ) {
-			/* Most likely a break, but we get interrupts over and
-			 * over again.
-			 */
-
-			if (!info->break_detected_cnt) {
-				DEBUG_LOG(info->line, "#BRK start\n", 0);
-			}
-			if (data_read & IO_MASK(R_SERIAL0_READ, rxd)) {
-				/* The RX pin is high now, so the break
-				 * must be over, but....
-				 * we can't really know if we will get another
-				 * last byte ending the break or not.
-				 * And we don't know if the byte (if any) will
-				 * have an error or look valid.
-				 */
-				DEBUG_LOG(info->line, "# BL BRK\n", 0);
-				info->errorcode = ERRCODE_INSERT_BREAK;
-			}
-			info->break_detected_cnt++;
-		} else {
-			/* The error does not look like a break, but could be
-			 * the end of one
-			 */
-			if (info->break_detected_cnt) {
-				DEBUG_LOG(info->line, "EBRK %i\n", info->break_detected_cnt);
-				info->errorcode = ERRCODE_INSERT_BREAK;
-			} else {
-				unsigned char data = IO_EXTRACT(R_SERIAL0_READ,
-					data_in, data_read);
-				char flag = TTY_NORMAL;
-				if (info->errorcode == ERRCODE_INSERT_BREAK) {
-					tty_insert_flip_char(&info->port, 0, flag);
-					info->icount.rx++;
-				}
-
-				if (data_read & IO_MASK(R_SERIAL0_READ, par_err)) {
-					info->icount.parity++;
-					flag = TTY_PARITY;
-				} else if (data_read & IO_MASK(R_SERIAL0_READ, overrun)) {
-					info->icount.overrun++;
-					flag = TTY_OVERRUN;
-				} else if (data_read & IO_MASK(R_SERIAL0_READ, framing_err)) {
-					info->icount.frame++;
-					flag = TTY_FRAME;
-				}
-				tty_insert_flip_char(&info->port, data, flag);
-				info->errorcode = 0;
-			}
-			info->break_detected_cnt = 0;
-		}
-	} else if (data_read & IO_MASK(R_SERIAL0_READ, data_avail)) {
-		/* No error */
-		DLOG_INT_TRIG(
-		if (!log_int_trig1_pos) {
-			if (log_int_pos >= log_int_size) {
-				log_int_pos = 0;
-			}
-			log_int_trig0_pos = log_int_pos;
-			log_int(rdpc(), 0, 0);
-		}
-		);
-		tty_insert_flip_char(&info->port,
-			IO_EXTRACT(R_SERIAL0_READ, data_in, data_read),
-			TTY_NORMAL);
-	} else {
-		DEBUG_LOG(info->line, "ser_rx int but no data_avail  %08lX\n", data_read);
-	}
-
-
-	info->icount.rx++;
-	data_read = *((unsigned long *)&info->ioport[REG_DATA_STATUS32]);
-	if (data_read & IO_MASK(R_SERIAL0_READ, data_avail)) {
-		DEBUG_LOG(info->line, "ser_rx   %c in loop\n", IO_EXTRACT(R_SERIAL0_READ, data_in, data_read));
-		goto more_data;
-	}
-
-	tty_flip_buffer_push(&info->port);
-}
-
-static void handle_ser_rx_interrupt(struct e100_serial *info)
-{
-	unsigned char rstat;
-
-#ifdef SERIAL_DEBUG_INTR
-	printk("Interrupt from serport %d\n", i);
-#endif
-/*	DEBUG_LOG(info->line, "ser_interrupt stat %03X\n", rstat | (i << 8)); */
-	if (!info->uses_dma_in) {
-		handle_ser_rx_interrupt_no_dma(info);
-		return;
-	}
-	/* DMA is used */
-	rstat = info->ioport[REG_STATUS];
-	if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect) ) {
-		DFLOW(DEBUG_LOG(info->line, "XOFF detect\n", 0));
-	}
-
-	if (rstat & SER_ERROR_MASK) {
-		unsigned char data;
-
-		info->last_rx_active_usec = GET_JIFFIES_USEC();
-		info->last_rx_active = jiffies;
-		/* If we got an error, we must reset it by reading the
-		 * data_in field
-		 */
-		data = info->ioport[REG_DATA];
-		DINTR1(DEBUG_LOG(info->line, "ser_rx!  %c\n", data));
-		DINTR1(DEBUG_LOG(info->line, "ser_rx err stat %02X\n", rstat));
-		if (!data && (rstat & SER_FRAMING_ERR_MASK)) {
-			/* Most likely a break, but we get interrupts over and
-			 * over again.
-			 */
-
-			if (!info->break_detected_cnt) {
-				DEBUG_LOG(info->line, "#BRK start\n", 0);
-			}
-			if (rstat & SER_RXD_MASK) {
-				/* The RX pin is high now, so the break
-				 * must be over, but....
-				 * we can't really know if we will get another
-				 * last byte ending the break or not.
-				 * And we don't know if the byte (if any) will
-				 * have an error or look valid.
-				 */
-				DEBUG_LOG(info->line, "# BL BRK\n", 0);
-				info->errorcode = ERRCODE_INSERT_BREAK;
-			}
-			info->break_detected_cnt++;
-		} else {
-			/* The error does not look like a break, but could be
-			 * the end of one
-			 */
-			if (info->break_detected_cnt) {
-				DEBUG_LOG(info->line, "EBRK %i\n", info->break_detected_cnt);
-				info->errorcode = ERRCODE_INSERT_BREAK;
-			} else {
-				if (info->errorcode == ERRCODE_INSERT_BREAK) {
-					info->icount.brk++;
-					add_char_and_flag(info, '\0', TTY_BREAK);
-				}
-
-				if (rstat & SER_PAR_ERR_MASK) {
-					info->icount.parity++;
-					add_char_and_flag(info, data, TTY_PARITY);
-				} else if (rstat & SER_OVERRUN_MASK) {
-					info->icount.overrun++;
-					add_char_and_flag(info, data, TTY_OVERRUN);
-				} else if (rstat & SER_FRAMING_ERR_MASK) {
-					info->icount.frame++;
-					add_char_and_flag(info, data, TTY_FRAME);
-				}
-
-				info->errorcode = 0;
-			}
-			info->break_detected_cnt = 0;
-			DEBUG_LOG(info->line, "#iERR s d %04X\n",
-			          ((rstat & SER_ERROR_MASK) << 8) | data);
-		}
-	} else { /* It was a valid byte, now let the DMA do the rest */
-		unsigned long curr_time_u = GET_JIFFIES_USEC();
-		unsigned long curr_time = jiffies;
-
-		if (info->break_detected_cnt) {
-			/* Detect if this character is a new valid char or the
-			 * last char in a break sequence: If LSBits are 0 and
-			 * MSBits are high AND the time is close to the
-			 * previous interrupt we should discard it.
-			 */
-			long elapsed_usec =
-			  (curr_time - info->last_rx_active) * (1000000/HZ) +
-			  curr_time_u - info->last_rx_active_usec;
-			if (elapsed_usec < 2*info->char_time_usec) {
-				DEBUG_LOG(info->line, "FBRK %i\n", info->line);
-				/* Report as BREAK (error) and let
-				 * receive_chars_dma() handle it
-				 */
-				info->errorcode = ERRCODE_SET_BREAK;
-			} else {
-				DEBUG_LOG(info->line, "Not end of BRK (V)%i\n", info->line);
-			}
-			DEBUG_LOG(info->line, "num brk %i\n", info->break_detected_cnt);
-		}
-
-#ifdef SERIAL_DEBUG_INTR
-		printk("** OK, disabling ser_interrupts\n");
-#endif
-		e100_disable_serial_data_irq(info);
-		DINTR2(DEBUG_LOG(info->line, "ser_rx OK %d\n", info->line));
-		info->break_detected_cnt = 0;
-
-	}
-	/* Restarting the DMA never hurts */
-	*info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, restart);
-	START_FLUSH_FAST_TIMER(info, "ser_int");
-} /* handle_ser_rx_interrupt */
-
-static void handle_ser_tx_interrupt(struct e100_serial *info)
-{
-	unsigned long flags;
-
-	if (info->x_char) {
-		unsigned char rstat;
-		DFLOW(DEBUG_LOG(info->line, "tx_int: xchar 0x%02X\n", info->x_char));
-		local_irq_save(flags);
-		rstat = info->ioport[REG_STATUS];
-		DFLOW(DEBUG_LOG(info->line, "stat %x\n", rstat));
-
-		info->ioport[REG_TR_DATA] = info->x_char;
-		info->icount.tx++;
-		info->x_char = 0;
-		/* We must enable since it is disabled in ser_interrupt */
-		e100_enable_serial_tx_ready_irq(info);
-		local_irq_restore(flags);
-		return;
-	}
-	if (info->uses_dma_out) {
-		unsigned char rstat;
-		int i;
-		/* We only use normal tx interrupt when sending x_char */
-		DFLOW(DEBUG_LOG(info->line, "tx_int: xchar sent\n", 0));
-		local_irq_save(flags);
-		rstat = info->ioport[REG_STATUS];
-		DFLOW(DEBUG_LOG(info->line, "stat %x\n", rstat));
-		e100_disable_serial_tx_ready_irq(info);
-		if (info->port.tty->stopped)
-			rs_stop(info->port.tty);
-		/* Enable the DMA channel and tell it to continue */
-		e100_enable_txdma_channel(info);
-		/* Wait 12 cycles before doing the DMA command */
-		for(i = 6;  i > 0; i--)
-			nop();
-
-		*info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, continue);
-		local_irq_restore(flags);
-		return;
-	}
-	/* Normal char-by-char interrupt */
-	if (info->xmit.head == info->xmit.tail
-	    || info->port.tty->stopped) {
-		DFLOW(DEBUG_LOG(info->line, "tx_int: stopped %i\n",
-				info->port.tty->stopped));
-		e100_disable_serial_tx_ready_irq(info);
-		info->tr_running = 0;
-		return;
-	}
-	DINTR2(DEBUG_LOG(info->line, "tx_int %c\n", info->xmit.buf[info->xmit.tail]));
-	/* Send a byte, rs485 timing is critical so turn of ints */
-	local_irq_save(flags);
-	info->ioport[REG_TR_DATA] = info->xmit.buf[info->xmit.tail];
-	info->xmit.tail = (info->xmit.tail + 1) & (SERIAL_XMIT_SIZE-1);
-	info->icount.tx++;
-	if (info->xmit.head == info->xmit.tail) {
-#if defined(CONFIG_ETRAX_RS485) && defined(CONFIG_ETRAX_FAST_TIMER)
-		if (info->rs485.flags & SER_RS485_ENABLED) {
-			/* Set a short timer to toggle RTS */
-			start_one_shot_timer(&fast_timers_rs485[info->line],
-			                     rs485_toggle_rts_timer_function,
-			                     (unsigned long)info,
-			                     info->char_time_usec*2,
-			                     "RS-485");
-		}
-#endif /* RS485 */
-		info->last_tx_active_usec = GET_JIFFIES_USEC();
-		info->last_tx_active = jiffies;
-		e100_disable_serial_tx_ready_irq(info);
-		info->tr_running = 0;
-		DFLOW(DEBUG_LOG(info->line, "tx_int: stop2\n", 0));
-	} else {
-		/* We must enable since it is disabled in ser_interrupt */
-		e100_enable_serial_tx_ready_irq(info);
-	}
-	local_irq_restore(flags);
-
-	if (CIRC_CNT(info->xmit.head,
-		     info->xmit.tail,
-		     SERIAL_XMIT_SIZE) < WAKEUP_CHARS)
-		rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
-
-} /* handle_ser_tx_interrupt */
-
-/* result of time measurements:
- * RX duration 54-60 us when doing something, otherwise 6-9 us
- * ser_int duration: just sending: 8-15 us normally, up to 73 us
- */
-static irqreturn_t
-ser_interrupt(int irq, void *dev_id)
-{
-	static volatile int tx_started = 0;
-	struct e100_serial *info;
-	int i;
-	unsigned long flags;
-	unsigned long irq_mask1_rd;
-	unsigned long data_mask = (1 << (8+2*0)); /* ser0 data_avail */
-	int handled = 0;
-	static volatile unsigned long reentered_ready_mask = 0;
-
-	local_irq_save(flags);
-	irq_mask1_rd = *R_IRQ_MASK1_RD;
-	/* First handle all rx interrupts with ints disabled */
-	info = rs_table;
-	irq_mask1_rd &= e100_ser_int_mask;
-	for (i = 0; i < NR_PORTS; i++) {
-		/* Which line caused the data irq? */
-		if (irq_mask1_rd & data_mask) {
-			handled = 1;
-			handle_ser_rx_interrupt(info);
-		}
-		info += 1;
-		data_mask <<= 2;
-	}
-	/* Handle tx interrupts with interrupts enabled so we
-	 * can take care of new data interrupts while transmitting
-	 * We protect the tx part with the tx_started flag.
-	 * We disable the tr_ready interrupts we are about to handle and
-	 * unblock the serial interrupt so new serial interrupts may come.
-	 *
-	 * If we get a new interrupt:
-	 *  - it migth be due to synchronous serial ports.
-	 *  - serial irq will be blocked by general irq handler.
-	 *  - async data will be handled above (sync will be ignored).
-	 *  - tx_started flag will prevent us from trying to send again and
-	 *    we will exit fast - no need to unblock serial irq.
-	 *  - Next (sync) serial interrupt handler will be runned with
-	 *    disabled interrupt due to restore_flags() at end of function,
-	 *    so sync handler will not be preempted or reentered.
-	 */
-	if (!tx_started) {
-		unsigned long ready_mask;
-		unsigned long
-		tx_started = 1;
-		/* Only the tr_ready interrupts left */
-		irq_mask1_rd &= (IO_MASK(R_IRQ_MASK1_RD, ser0_ready) |
-				 IO_MASK(R_IRQ_MASK1_RD, ser1_ready) |
-				 IO_MASK(R_IRQ_MASK1_RD, ser2_ready) |
-				 IO_MASK(R_IRQ_MASK1_RD, ser3_ready));
-		while (irq_mask1_rd) {
-			/* Disable those we are about to handle */
-			*R_IRQ_MASK1_CLR = irq_mask1_rd;
-			/* Unblock the serial interrupt */
-			*R_VECT_MASK_SET = IO_STATE(R_VECT_MASK_SET, serial, set);
-
-			local_irq_enable();
-			ready_mask = (1 << (8+1+2*0)); /* ser0 tr_ready */
-			info = rs_table;
-			for (i = 0; i < NR_PORTS; i++) {
-				/* Which line caused the ready irq? */
-				if (irq_mask1_rd & ready_mask) {
-					handled = 1;
-					handle_ser_tx_interrupt(info);
-				}
-				info += 1;
-				ready_mask <<= 2;
-			}
-			/* handle_ser_tx_interrupt enables tr_ready interrupts */
-			local_irq_disable();
-			/* Handle reentered TX interrupt */
-			irq_mask1_rd = reentered_ready_mask;
-		}
-		local_irq_disable();
-		tx_started = 0;
-	} else {
-		unsigned long ready_mask;
-		ready_mask = irq_mask1_rd & (IO_MASK(R_IRQ_MASK1_RD, ser0_ready) |
-					     IO_MASK(R_IRQ_MASK1_RD, ser1_ready) |
-					     IO_MASK(R_IRQ_MASK1_RD, ser2_ready) |
-					     IO_MASK(R_IRQ_MASK1_RD, ser3_ready));
-		if (ready_mask) {
-			reentered_ready_mask |= ready_mask;
-			/* Disable those we are about to handle */
-			*R_IRQ_MASK1_CLR = ready_mask;
-			DFLOW(DEBUG_LOG(SERIAL_DEBUG_LINE, "ser_int reentered with TX %X\n", ready_mask));
-		}
-	}
-
-	local_irq_restore(flags);
-	return IRQ_RETVAL(handled);
-} /* ser_interrupt */
-#endif
-
-/*
- * -------------------------------------------------------------------
- * Here ends the serial interrupt routines.
- * -------------------------------------------------------------------
- */
-
-/*
- * This routine is used to handle the "bottom half" processing for the
- * serial driver, known also the "software interrupt" processing.
- * This processing is done at the kernel interrupt level, after the
- * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON.  This
- * is where time-consuming activities which can not be done in the
- * interrupt driver proper are done; the interrupt driver schedules
- * them using rs_sched_event(), and they get done here.
- */
-static void
-do_softint(struct work_struct *work)
-{
-	struct e100_serial	*info;
-	struct tty_struct	*tty;
-
-	info = container_of(work, struct e100_serial, work);
-
-	tty = info->port.tty;
-	if (!tty)
-		return;
-
-	if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event))
-		tty_wakeup(tty);
-}
-
-static int
-startup(struct e100_serial * info)
-{
-	unsigned long flags;
-	unsigned long xmit_page;
-	int i;
-
-	xmit_page = get_zeroed_page(GFP_KERNEL);
-	if (!xmit_page)
-		return -ENOMEM;
-
-	local_irq_save(flags);
-
-	/* if it was already initialized, skip this */
-
-	if (tty_port_initialized(&info->port)) {
-		local_irq_restore(flags);
-		free_page(xmit_page);
-		return 0;
-	}
-
-	if (info->xmit.buf)
-		free_page(xmit_page);
-	else
-		info->xmit.buf = (unsigned char *) xmit_page;
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk("starting up ttyS%d (xmit_buf 0x%p)...\n", info->line, info->xmit.buf);
-#endif
-
-	/*
-	 * Clear the FIFO buffers and disable them
-	 * (they will be reenabled in change_speed())
-	 */
-
-	/*
-	 * Reset the DMA channels and make sure their interrupts are cleared
-	 */
-
-	if (info->dma_in_enabled) {
-		info->uses_dma_in = 1;
-		e100_enable_rxdma_channel(info);
-
-		*info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset);
-
-		/* Wait until reset cycle is complete */
-		while (IO_EXTRACT(R_DMA_CH6_CMD, cmd, *info->icmdadr) ==
-		       IO_STATE_VALUE(R_DMA_CH6_CMD, cmd, reset));
-
-		/* Make sure the irqs are cleared */
-		*info->iclrintradr =
-			IO_STATE(R_DMA_CH6_CLR_INTR, clr_descr, do) |
-			IO_STATE(R_DMA_CH6_CLR_INTR, clr_eop, do);
-	} else {
-		e100_disable_rxdma_channel(info);
-	}
-
-	if (info->dma_out_enabled) {
-		info->uses_dma_out = 1;
-		e100_enable_txdma_channel(info);
-		*info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset);
-
-		while (IO_EXTRACT(R_DMA_CH6_CMD, cmd, *info->ocmdadr) ==
-		       IO_STATE_VALUE(R_DMA_CH6_CMD, cmd, reset));
-
-		/* Make sure the irqs are cleared */
-		*info->oclrintradr =
-			IO_STATE(R_DMA_CH6_CLR_INTR, clr_descr, do) |
-			IO_STATE(R_DMA_CH6_CLR_INTR, clr_eop, do);
-	} else {
-		e100_disable_txdma_channel(info);
-	}
-
-	if (info->port.tty)
-		clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
-
-	info->xmit.head = info->xmit.tail = 0;
-	info->first_recv_buffer = info->last_recv_buffer = NULL;
-	info->recv_cnt = info->max_recv_cnt = 0;
-
-	for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++)
-		info->rec_descr[i].buf = 0;
-
-	/*
-	 * and set the speed and other flags of the serial port
-	 * this will start the rx/tx as well
-	 */
-#ifdef SERIAL_HANDLE_EARLY_ERRORS
-	e100_enable_serial_data_irq(info);
-#endif
-	change_speed(info);
-
-	/* dummy read to reset any serial errors */
-
-	(void)info->ioport[REG_DATA];
-
-	/* enable the interrupts */
-	if (info->uses_dma_out)
-		e100_enable_txdma_irq(info);
-
-	e100_enable_rx_irq(info);
-
-	info->tr_running = 0; /* to be sure we don't lock up the transmitter */
-
-	/* setup the dma input descriptor and start dma */
-
-	start_receive(info);
-
-	/* for safety, make sure the descriptors last result is 0 bytes written */
-
-	info->tr_descr.sw_len = 0;
-	info->tr_descr.hw_len = 0;
-	info->tr_descr.status = 0;
-
-	/* enable RTS/DTR last */
-
-	e100_rts(info, 1);
-	e100_dtr(info, 1);
-
-	tty_port_set_initialized(&info->port, 1);
-
-	local_irq_restore(flags);
-	return 0;
-}
-
-/*
- * This routine will shutdown a serial port; interrupts are disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
- */
-static void
-shutdown(struct e100_serial * info)
-{
-	unsigned long flags;
-	struct etrax_dma_descr *descr = info->rec_descr;
-	struct etrax_recv_buffer *buffer;
-	int i;
-
-	/* shut down the transmitter and receiver */
-	DFLOW(DEBUG_LOG(info->line, "shutdown %i\n", info->line));
-	e100_disable_rx(info);
-	info->ioport[REG_TR_CTRL] = (info->tx_ctrl &= ~0x40);
-
-	/* disable interrupts, reset dma channels */
-	if (info->uses_dma_in) {
-		e100_disable_rxdma_irq(info);
-		*info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset);
-		info->uses_dma_in = 0;
-	} else {
-		e100_disable_serial_data_irq(info);
-	}
-
-	if (info->uses_dma_out) {
-		e100_disable_txdma_irq(info);
-		info->tr_running = 0;
-		*info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, reset);
-		info->uses_dma_out = 0;
-	} else {
-		e100_disable_serial_tx_ready_irq(info);
-		info->tr_running = 0;
-	}
-
-	if (!tty_port_initialized(&info->port))
-		return;
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk("Shutting down serial port %d (irq %d)....\n", info->line,
-	       info->irq);
-#endif
-
-	local_irq_save(flags);
-
-	if (info->xmit.buf) {
-		free_page((unsigned long)info->xmit.buf);
-		info->xmit.buf = NULL;
-	}
-
-	for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++)
-		if (descr[i].buf) {
-			buffer = phys_to_virt(descr[i].buf) - sizeof *buffer;
-			kfree(buffer);
-			descr[i].buf = 0;
-		}
-
-	if (!info->port.tty || (info->port.tty->termios.c_cflag & HUPCL)) {
-		/* hang up DTR and RTS if HUPCL is enabled */
-		e100_dtr(info, 0);
-		e100_rts(info, 0); /* could check CRTSCTS before doing this */
-	}
-
-	if (info->port.tty)
-		set_bit(TTY_IO_ERROR, &info->port.tty->flags);
-
-	tty_port_set_initialized(&info->port, 0);
-	local_irq_restore(flags);
-}
-
-
-/* change baud rate and other assorted parameters */
-
-static void
-change_speed(struct e100_serial *info)
-{
-	unsigned int cflag;
-	unsigned long xoff;
-	unsigned long flags;
-	/* first some safety checks */
-
-	if (!info->port.tty)
-		return;
-	if (!info->ioport)
-		return;
-
-	cflag = info->port.tty->termios.c_cflag;
-
-	/* possibly, the tx/rx should be disabled first to do this safely */
-
-	/* change baud-rate and write it to the hardware */
-	if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) {
-		/* Special baudrate */
-		u32 mask = 0xFF << (info->line*8); /* Each port has 8 bits */
-		unsigned long alt_source =
-				IO_STATE(R_ALT_SER_BAUDRATE, ser0_rec, normal) |
-				IO_STATE(R_ALT_SER_BAUDRATE, ser0_tr, normal);
-		/* R_ALT_SER_BAUDRATE selects the source */
-		DBAUD(printk("Custom baudrate: baud_base/divisor %lu/%i\n",
-		       (unsigned long)info->baud_base, info->custom_divisor));
-		if (info->baud_base == SERIAL_PRESCALE_BASE) {
-			/* 0, 2-65535 (0=65536) */
-			u16 divisor = info->custom_divisor;
-			/* R_SERIAL_PRESCALE (upper 16 bits of R_CLOCK_PRESCALE) */
-			/* baudrate is 3.125MHz/custom_divisor */
-			alt_source =
-				IO_STATE(R_ALT_SER_BAUDRATE, ser0_rec, prescale) |
-				IO_STATE(R_ALT_SER_BAUDRATE, ser0_tr, prescale);
-			alt_source = 0x11;
-			DBAUD(printk("Writing SERIAL_PRESCALE: divisor %i\n", divisor));
-			*R_SERIAL_PRESCALE = divisor;
-			info->baud = SERIAL_PRESCALE_BASE/divisor;
-		}
-		else
-		{
-			/* Bad baudbase, we don't support using timer0
-			 * for baudrate.
-			 */
-			printk(KERN_WARNING "Bad baud_base/custom_divisor: %lu/%i\n",
-			       (unsigned long)info->baud_base, info->custom_divisor);
-		}
-		r_alt_ser_baudrate_shadow &= ~mask;
-		r_alt_ser_baudrate_shadow |= (alt_source << (info->line*8));
-		*R_ALT_SER_BAUDRATE = r_alt_ser_baudrate_shadow;
-	} else {
-		/* Normal baudrate */
-		/* Make sure we use normal baudrate */
-		u32 mask = 0xFF << (info->line*8); /* Each port has 8 bits */
-		unsigned long alt_source =
-			IO_STATE(R_ALT_SER_BAUDRATE, ser0_rec, normal) |
-			IO_STATE(R_ALT_SER_BAUDRATE, ser0_tr, normal);
-		r_alt_ser_baudrate_shadow &= ~mask;
-		r_alt_ser_baudrate_shadow |= (alt_source << (info->line*8));
-		*R_ALT_SER_BAUDRATE = r_alt_ser_baudrate_shadow;
-
-		info->baud = cflag_to_baud(cflag);
-		info->ioport[REG_BAUD] = cflag_to_etrax_baud(cflag);
-	}
-
-	/* start with default settings and then fill in changes */
-	local_irq_save(flags);
-	/* 8 bit, no/even parity */
-	info->rx_ctrl &= ~(IO_MASK(R_SERIAL0_REC_CTRL, rec_bitnr) |
-			   IO_MASK(R_SERIAL0_REC_CTRL, rec_par_en) |
-			   IO_MASK(R_SERIAL0_REC_CTRL, rec_par));
-
-	/* 8 bit, no/even parity, 1 stop bit, no cts */
-	info->tx_ctrl &= ~(IO_MASK(R_SERIAL0_TR_CTRL, tr_bitnr) |
-			   IO_MASK(R_SERIAL0_TR_CTRL, tr_par_en) |
-			   IO_MASK(R_SERIAL0_TR_CTRL, tr_par) |
-			   IO_MASK(R_SERIAL0_TR_CTRL, stop_bits) |
-			   IO_MASK(R_SERIAL0_TR_CTRL, auto_cts));
-
-	if ((cflag & CSIZE) == CS7) {
-		/* set 7 bit mode */
-		info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_7bit);
-		info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_7bit);
-	}
-
-	if (cflag & CSTOPB) {
-		/* set 2 stop bit mode */
-		info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, stop_bits, two_bits);
-	}
-
-	if (cflag & PARENB) {
-		/* enable parity */
-		info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
-		info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
-	}
-
-	if (cflag & CMSPAR) {
-		/* enable stick parity, PARODD mean Mark which matches ETRAX */
-		info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_stick_par, stick);
-		info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_stick_par, stick);
-	}
-	if (cflag & PARODD) {
-		/* set odd parity (or Mark if CMSPAR) */
-		info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_par, odd);
-		info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_par, odd);
-	}
-
-	if (cflag & CRTSCTS) {
-		/* enable automatic CTS handling */
-		DFLOW(DEBUG_LOG(info->line, "FLOW auto_cts enabled\n", 0));
-		info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, auto_cts, active);
-	}
-
-	/* make sure the tx and rx are enabled */
-
-	info->tx_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_enable, enable);
-	info->rx_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable);
-
-	/* actually write the control regs to the hardware */
-
-	info->ioport[REG_TR_CTRL] = info->tx_ctrl;
-	info->ioport[REG_REC_CTRL] = info->rx_ctrl;
-	xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(info->port.tty));
-	xoff |= IO_STATE(R_SERIAL0_XOFF, tx_stop, enable);
-	if (info->port.tty->termios.c_iflag & IXON ) {
-		DFLOW(DEBUG_LOG(info->line, "FLOW XOFF enabled 0x%02X\n",
-				STOP_CHAR(info->port.tty)));
-		xoff |= IO_STATE(R_SERIAL0_XOFF, auto_xoff, enable);
-	}
-
-	*((unsigned long *)&info->ioport[REG_XOFF]) = xoff;
-	local_irq_restore(flags);
-
-	update_char_time(info);
-
-} /* change_speed */
-
-/* start transmitting chars NOW */
-
-static void
-rs_flush_chars(struct tty_struct *tty)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	unsigned long flags;
-
-	if (info->tr_running ||
-	    info->xmit.head == info->xmit.tail ||
-	    tty->stopped ||
-	    !info->xmit.buf)
-		return;
-
-#ifdef SERIAL_DEBUG_FLOW
-	printk("rs_flush_chars\n");
-#endif
-
-	/* this protection might not exactly be necessary here */
-
-	local_irq_save(flags);
-	start_transmit(info);
-	local_irq_restore(flags);
-}
-
-static int rs_raw_write(struct tty_struct *tty,
-			const unsigned char *buf, int count)
-{
-	int	c, ret = 0;
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	unsigned long flags;
-
-	/* first some sanity checks */
-
-	if (!info->xmit.buf)
-		return 0;
-
-#ifdef SERIAL_DEBUG_DATA
-	if (info->line == SERIAL_DEBUG_LINE)
-		printk("rs_raw_write (%d), status %d\n",
-		       count, info->ioport[REG_STATUS]);
-#endif
-
-	local_save_flags(flags);
-	DFLOW(DEBUG_LOG(info->line, "write count %i ", count));
-	DFLOW(DEBUG_LOG(info->line, "ldisc\n"));
-
-
-	/* The local_irq_disable/restore_flags pairs below are needed
-	 * because the DMA interrupt handler moves the info->xmit values.
-	 * the memcpy needs to be in the critical region unfortunately,
-	 * because we need to read xmit values, memcpy, write xmit values
-	 * in one atomic operation... this could perhaps be avoided by
-	 * more clever design.
-	 */
-	local_irq_disable();
-		while (count) {
-			c = CIRC_SPACE_TO_END(info->xmit.head,
-					      info->xmit.tail,
-					      SERIAL_XMIT_SIZE);
-
-			if (count < c)
-				c = count;
-			if (c <= 0)
-				break;
-
-			memcpy(info->xmit.buf + info->xmit.head, buf, c);
-			info->xmit.head = (info->xmit.head + c) &
-				(SERIAL_XMIT_SIZE-1);
-			buf += c;
-			count -= c;
-			ret += c;
-		}
-	local_irq_restore(flags);
-
-	/* enable transmitter if not running, unless the tty is stopped
-	 * this does not need IRQ protection since if tr_running == 0
-	 * the IRQ's are not running anyway for this port.
-	 */
-	DFLOW(DEBUG_LOG(info->line, "write ret %i\n", ret));
-
-	if (info->xmit.head != info->xmit.tail &&
-	    !tty->stopped &&
-	    !info->tr_running) {
-		start_transmit(info);
-	}
-
-	return ret;
-} /* raw_raw_write() */
-
-static int
-rs_write(struct tty_struct *tty,
-	 const unsigned char *buf, int count)
-{
-#if defined(CONFIG_ETRAX_RS485)
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-
-	if (info->rs485.flags & SER_RS485_ENABLED)
-	{
-		/* If we are in RS-485 mode, we need to toggle RTS and disable
-		 * the receiver before initiating a DMA transfer
-		 */
-#ifdef CONFIG_ETRAX_FAST_TIMER
-		/* Abort any started timer */
-		fast_timers_rs485[info->line].function = NULL;
-		del_fast_timer(&fast_timers_rs485[info->line]);
-#endif
-		e100_rts(info, (info->rs485.flags & SER_RS485_RTS_ON_SEND));
-#if defined(CONFIG_ETRAX_RS485_DISABLE_RECEIVER)
-		e100_disable_rx(info);
-		e100_enable_rx_irq(info);
-#endif
-		if (info->rs485.delay_rts_before_send > 0)
-			msleep(info->rs485.delay_rts_before_send);
-	}
-#endif /* CONFIG_ETRAX_RS485 */
-
-	count = rs_raw_write(tty, buf, count);
-
-#if defined(CONFIG_ETRAX_RS485)
-	if (info->rs485.flags & SER_RS485_ENABLED)
-	{
-		unsigned int val;
-		/* If we are in RS-485 mode the following has to be done:
-		 * wait until DMA is ready
-		 * wait on transmit shift register
-		 * toggle RTS
-		 * enable the receiver
-		 */
-
-		/* Sleep until all sent */
-		tty_wait_until_sent(tty, 0);
-#ifdef CONFIG_ETRAX_FAST_TIMER
-		/* Now sleep a little more so that shift register is empty */
-		schedule_usleep(info->char_time_usec * 2);
-#endif
-		/* wait on transmit shift register */
-		do{
-			get_lsr_info(info, &val);
-		}while (!(val & TIOCSER_TEMT));
-
-		e100_rts(info, (info->rs485.flags & SER_RS485_RTS_AFTER_SEND));
-
-#if defined(CONFIG_ETRAX_RS485_DISABLE_RECEIVER)
-		e100_enable_rx(info);
-		e100_enable_rxdma_irq(info);
-#endif
-	}
-#endif /* CONFIG_ETRAX_RS485 */
-
-	return count;
-} /* rs_write */
-
-
-/* how much space is available in the xmit buffer? */
-
-static int
-rs_write_room(struct tty_struct *tty)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-
-	return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-/* How many chars are in the xmit buffer?
- * This does not include any chars in the transmitter FIFO.
- * Use wait_until_sent for waiting for FIFO drain.
- */
-
-static int
-rs_chars_in_buffer(struct tty_struct *tty)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-
-	return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-/* discard everything in the xmit buffer */
-
-static void
-rs_flush_buffer(struct tty_struct *tty)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	info->xmit.head = info->xmit.tail = 0;
-	local_irq_restore(flags);
-
-	tty_wakeup(tty);
-}
-
-/*
- * This function is used to send a high-priority XON/XOFF character to
- * the device
- *
- * Since we use DMA we don't check for info->x_char in transmit_chars_dma(),
- * but we do it in handle_ser_tx_interrupt().
- * We disable DMA channel and enable tx ready interrupt and write the
- * character when possible.
- */
-static void rs_send_xchar(struct tty_struct *tty, char ch)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	unsigned long flags;
-	local_irq_save(flags);
-	if (info->uses_dma_out) {
-		/* Put the DMA on hold and disable the channel */
-		*info->ocmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, hold);
-		while (IO_EXTRACT(R_DMA_CH6_CMD, cmd, *info->ocmdadr) !=
-		       IO_STATE_VALUE(R_DMA_CH6_CMD, cmd, hold));
-		e100_disable_txdma_channel(info);
-	}
-
-	/* Must make sure transmitter is not stopped before we can transmit */
-	if (tty->stopped)
-		rs_start(tty);
-
-	/* Enable manual transmit interrupt and send from there */
-	DFLOW(DEBUG_LOG(info->line, "rs_send_xchar 0x%02X\n", ch));
-	info->x_char = ch;
-	e100_enable_serial_tx_ready_irq(info);
-	local_irq_restore(flags);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_throttle()
- *
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled.
- * ------------------------------------------------------------
- */
-static void
-rs_throttle(struct tty_struct * tty)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-#ifdef SERIAL_DEBUG_THROTTLE
-	printk("throttle %s ....\n", tty_name(tty));
-#endif
-	DFLOW(DEBUG_LOG(info->line,"rs_throttle\n"));
-
-	/* Do RTS before XOFF since XOFF might take some time */
-	if (C_CRTSCTS(tty)) {
-		/* Turn off RTS line */
-		e100_rts(info, 0);
-	}
-	if (I_IXOFF(tty))
-		rs_send_xchar(tty, STOP_CHAR(tty));
-
-}
-
-static void
-rs_unthrottle(struct tty_struct * tty)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-#ifdef SERIAL_DEBUG_THROTTLE
-	printk("unthrottle %s ....\n", tty_name(tty));
-#endif
-	DFLOW(DEBUG_LOG(info->line,"rs_unthrottle ldisc\n"));
-	DFLOW(DEBUG_LOG(info->line,"rs_unthrottle flip.count: %i\n", tty->flip.count));
-	/* Do RTS before XOFF since XOFF might take some time */
-	if (C_CRTSCTS(tty)) {
-		/* Assert RTS line  */
-		e100_rts(info, 1);
-	}
-
-	if (I_IXOFF(tty)) {
-		if (info->x_char)
-			info->x_char = 0;
-		else
-			rs_send_xchar(tty, START_CHAR(tty));
-	}
-
-}
-
-/*
- * ------------------------------------------------------------
- * rs_ioctl() and friends
- * ------------------------------------------------------------
- */
-
-static int
-get_serial_info(struct e100_serial * info,
-		struct serial_struct * retinfo)
-{
-	struct serial_struct tmp;
-
-	/* this is all probably wrong, there are a lot of fields
-	 * here that we don't have in e100_serial and maybe we
-	 * should set them to something else than 0.
-	 */
-
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.type = info->type;
-	tmp.line = info->line;
-	tmp.port = (int)info->ioport;
-	tmp.irq = info->irq;
-	tmp.flags = info->port.flags;
-	tmp.baud_base = info->baud_base;
-	tmp.close_delay = info->port.close_delay;
-	tmp.closing_wait = info->port.closing_wait;
-	tmp.custom_divisor = info->custom_divisor;
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
-	return 0;
-}
-
-static int
-set_serial_info(struct e100_serial *info,
-		struct serial_struct *new_info)
-{
-	struct serial_struct new_serial;
-	struct e100_serial old_info;
-	int retval = 0;
-
-	if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
-		return -EFAULT;
-
-	old_info = *info;
-
-	if (!capable(CAP_SYS_ADMIN)) {
-		if ((new_serial.type != info->type) ||
-		    (new_serial.close_delay != info->port.close_delay) ||
-		    ((new_serial.flags & ~ASYNC_USR_MASK) !=
-		     (info->port.flags & ~ASYNC_USR_MASK)))
-			return -EPERM;
-		info->port.flags = ((info->port.flags & ~ASYNC_USR_MASK) |
-			       (new_serial.flags & ASYNC_USR_MASK));
-		goto check_and_exit;
-	}
-
-	if (info->port.count > 1)
-		return -EBUSY;
-
-	/*
-	 * OK, past this point, all the error checking has been done.
-	 * At this point, we start making changes.....
-	 */
-
-	info->baud_base = new_serial.baud_base;
-	info->port.flags = ((info->port.flags & ~ASYNC_FLAGS) |
-		       (new_serial.flags & ASYNC_FLAGS));
-	info->custom_divisor = new_serial.custom_divisor;
-	info->type = new_serial.type;
-	info->port.close_delay = new_serial.close_delay;
-	info->port.closing_wait = new_serial.closing_wait;
-	info->port.low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
-
- check_and_exit:
-	if (tty_port_initialized(&info->port))
-		change_speed(info);
-	else
-		retval = startup(info);
-	return retval;
-}
-
-/*
- * get_lsr_info - get line status register info
- *
- * Purpose: Let user call ioctl() to get info when the UART physically
- * 	    is emptied.  On bus types like RS485, the transmitter must
- * 	    release the bus after transmitting. This must be done when
- * 	    the transmit shift register is empty, not be done when the
- * 	    transmit holding register is empty.  This functionality
- * 	    allows an RS485 driver to be written in user space.
- */
-static int
-get_lsr_info(struct e100_serial * info, unsigned int *value)
-{
-	unsigned int result = TIOCSER_TEMT;
-	unsigned long curr_time = jiffies;
-	unsigned long curr_time_usec = GET_JIFFIES_USEC();
-	unsigned long elapsed_usec =
-		(curr_time - info->last_tx_active) * 1000000/HZ +
-		curr_time_usec - info->last_tx_active_usec;
-
-	if (info->xmit.head != info->xmit.tail ||
-	    elapsed_usec < 2*info->char_time_usec) {
-		result = 0;
-	}
-
-	if (copy_to_user(value, &result, sizeof(int)))
-		return -EFAULT;
-	return 0;
-}
-
-#ifdef SERIAL_DEBUG_IO
-struct state_str
-{
-	int state;
-	const char *str;
-};
-
-const struct state_str control_state_str[] = {
-	{TIOCM_DTR, "DTR" },
-	{TIOCM_RTS, "RTS"},
-	{TIOCM_ST, "ST?" },
-	{TIOCM_SR, "SR?" },
-	{TIOCM_CTS, "CTS" },
-	{TIOCM_CD, "CD" },
-	{TIOCM_RI, "RI" },
-	{TIOCM_DSR, "DSR" },
-	{0, NULL }
-};
-
-char *get_control_state_str(int MLines, char *s)
-{
-	int i = 0;
-
-	s[0]='\0';
-	while (control_state_str[i].str != NULL) {
-		if (MLines & control_state_str[i].state) {
-			if (s[0] != '\0') {
-				strcat(s, ", ");
-			}
-			strcat(s, control_state_str[i].str);
-		}
-		i++;
-	}
-	return s;
-}
-#endif
-
-static int
-rs_break(struct tty_struct *tty, int break_state)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	unsigned long flags;
-
-	if (!info->ioport)
-		return -EIO;
-
-	local_irq_save(flags);
-	if (break_state == -1) {
-		/* Go to manual mode and set the txd pin to 0 */
-		/* Clear bit 7 (txd) and 6 (tr_enable) */
-		info->tx_ctrl &= 0x3F;
-	} else {
-		/* Set bit 7 (txd) and 6 (tr_enable) */
-		info->tx_ctrl |= (0x80 | 0x40);
-	}
-	info->ioport[REG_TR_CTRL] = info->tx_ctrl;
-	local_irq_restore(flags);
-	return 0;
-}
-
-static int
-rs_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	unsigned long flags;
-
-	local_irq_save(flags);
-
-	if (clear & TIOCM_RTS)
-		e100_rts(info, 0);
-	if (clear & TIOCM_DTR)
-		e100_dtr(info, 0);
-	/* Handle FEMALE behaviour */
-	if (clear & TIOCM_RI)
-		e100_ri_out(info, 0);
-	if (clear & TIOCM_CD)
-		e100_cd_out(info, 0);
-
-	if (set & TIOCM_RTS)
-		e100_rts(info, 1);
-	if (set & TIOCM_DTR)
-		e100_dtr(info, 1);
-	/* Handle FEMALE behaviour */
-	if (set & TIOCM_RI)
-		e100_ri_out(info, 1);
-	if (set & TIOCM_CD)
-		e100_cd_out(info, 1);
-
-	local_irq_restore(flags);
-	return 0;
-}
-
-static int
-rs_tiocmget(struct tty_struct *tty)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	unsigned int result;
-	unsigned long flags;
-
-	local_irq_save(flags);
-
-	result =
-		(!E100_RTS_GET(info) ? TIOCM_RTS : 0)
-		| (!E100_DTR_GET(info) ? TIOCM_DTR : 0)
-		| (!E100_RI_GET(info) ? TIOCM_RNG : 0)
-		| (!E100_DSR_GET(info) ? TIOCM_DSR : 0)
-		| (!E100_CD_GET(info) ? TIOCM_CAR : 0)
-		| (!E100_CTS_GET(info) ? TIOCM_CTS : 0);
-
-	local_irq_restore(flags);
-
-#ifdef SERIAL_DEBUG_IO
-	printk(KERN_DEBUG "ser%i: modem state: %i 0x%08X\n",
-		info->line, result, result);
-	{
-		char s[100];
-
-		get_control_state_str(result, s);
-		printk(KERN_DEBUG "state: %s\n", s);
-	}
-#endif
-	return result;
-
-}
-
-
-static int
-rs_ioctl(struct tty_struct *tty,
-	 unsigned int cmd, unsigned long arg)
-{
-	struct e100_serial * info = (struct e100_serial *)tty->driver_data;
-
-	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
-	    (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGWILD)  &&
-	    (cmd != TIOCSERSWILD) && (cmd != TIOCSERGSTRUCT)) {
-		if (tty_io_error(tty))
-			return -EIO;
-	}
-
-	switch (cmd) {
-	case TIOCGSERIAL:
-		return get_serial_info(info,
-				       (struct serial_struct *) arg);
-	case TIOCSSERIAL:
-		return set_serial_info(info,
-				       (struct serial_struct *) arg);
-	case TIOCSERGETLSR: /* Get line status register */
-		return get_lsr_info(info, (unsigned int *) arg);
-
-	case TIOCSERGSTRUCT:
-		if (copy_to_user((struct e100_serial *) arg,
-				 info, sizeof(struct e100_serial)))
-			return -EFAULT;
-		return 0;
-
-#if defined(CONFIG_ETRAX_RS485)
-	case TIOCSERSETRS485:
-	{
-		/* In this ioctl we still use the old structure
-		 * rs485_control for backward compatibility
-		 * (if we use serial_rs485, then old user-level code
-		 * wouldn't work anymore...).
-		 * The use of this ioctl is deprecated: use TIOCSRS485
-		 * instead.*/
-		struct rs485_control rs485ctrl;
-		struct serial_rs485 rs485data;
-		printk(KERN_DEBUG "The use of this ioctl is deprecated. Use TIOCSRS485 instead\n");
-		if (copy_from_user(&rs485ctrl, (struct rs485_control *)arg,
-				sizeof(rs485ctrl)))
-			return -EFAULT;
-
-		rs485data.delay_rts_before_send = rs485ctrl.delay_rts_before_send;
-		rs485data.flags = 0;
-
-		if (rs485ctrl.enabled)
-			rs485data.flags |= SER_RS485_ENABLED;
-		else
-			rs485data.flags &= ~(SER_RS485_ENABLED);
-
-		if (rs485ctrl.rts_on_send)
-			rs485data.flags |= SER_RS485_RTS_ON_SEND;
-		else
-			rs485data.flags &= ~(SER_RS485_RTS_ON_SEND);
-
-		if (rs485ctrl.rts_after_sent)
-			rs485data.flags |= SER_RS485_RTS_AFTER_SEND;
-		else
-			rs485data.flags &= ~(SER_RS485_RTS_AFTER_SEND);
-
-		return e100_enable_rs485(tty, &rs485data);
-	}
-
-	case TIOCSRS485:
-	{
-		/* This is the new version of TIOCSRS485, with new
-		 * data structure serial_rs485 */
-		struct serial_rs485 rs485data;
-		if (copy_from_user(&rs485data, (struct rs485_control *)arg,
-				sizeof(rs485data)))
-			return -EFAULT;
-
-		return e100_enable_rs485(tty, &rs485data);
-	}
-
-	case TIOCGRS485:
-	{
-		struct serial_rs485 *rs485data =
-			&(((struct e100_serial *)tty->driver_data)->rs485);
-		/* This is the ioctl to get RS485 data from user-space */
-		if (copy_to_user((struct serial_rs485 *) arg,
-					rs485data,
-					sizeof(struct serial_rs485)))
-			return -EFAULT;
-		break;
-	}
-
-	case TIOCSERWRRS485:
-	{
-		struct rs485_write rs485wr;
-		if (copy_from_user(&rs485wr, (struct rs485_write *)arg,
-				sizeof(rs485wr)))
-			return -EFAULT;
-
-		return e100_write_rs485(tty, rs485wr.outc, rs485wr.outc_size);
-	}
-#endif
-
-	default:
-		return -ENOIOCTLCMD;
-	}
-	return 0;
-}
-
-static void
-rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
-{
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-
-	change_speed(info);
-
-	/* Handle turning off CRTSCTS */
-	if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty))
-		rs_start(tty);
-
-}
-
-/*
- * ------------------------------------------------------------
- * rs_close()
- *
- * This routine is called when the serial port gets closed.  First, we
- * wait for the last remaining data to be sent.  Then, we unlink its
- * S structure from the interrupt chain if necessary, and we free
- * that IRQ if nothing is left in the chain.
- * ------------------------------------------------------------
- */
-static void
-rs_close(struct tty_struct *tty, struct file * filp)
-{
-	struct e100_serial * info = (struct e100_serial *)tty->driver_data;
-	unsigned long flags;
-
-	if (!info)
-		return;
-
-	/* interrupts are disabled for this entire function */
-
-	local_irq_save(flags);
-
-	if (tty_hung_up_p(filp)) {
-		local_irq_restore(flags);
-		return;
-	}
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk("[%d] rs_close ttyS%d, count = %d\n", current->pid,
-	       info->line, info->count);
-#endif
-	if ((tty->count == 1) && (info->port.count != 1)) {
-		/*
-		 * Uh, oh.  tty->count is 1, which means that the tty
-		 * structure will be freed.  Info->count should always
-		 * be one in these conditions.  If it's greater than
-		 * one, we've got real problems, since it means the
-		 * serial port won't be shutdown.
-		 */
-		printk(KERN_ERR
-		       "rs_close: bad serial port count; tty->count is 1, "
-		       "info->count is %d\n", info->port.count);
-		info->port.count = 1;
-	}
-	if (--info->port.count < 0) {
-		printk(KERN_ERR "rs_close: bad serial port count for ttyS%d: %d\n",
-		       info->line, info->port.count);
-		info->port.count = 0;
-	}
-	if (info->port.count) {
-		local_irq_restore(flags);
-		return;
-	}
-	/*
-	 * Now we wait for the transmit buffer to clear; and we notify
-	 * the line discipline to only process XON/XOFF characters.
-	 */
-	tty->closing = 1;
-	if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
-		tty_wait_until_sent(tty, info->port.closing_wait);
-	/*
-	 * At this point we stop accepting input.  To do this, we
-	 * disable the serial receiver and the DMA receive interrupt.
-	 */
-#ifdef SERIAL_HANDLE_EARLY_ERRORS
-	e100_disable_serial_data_irq(info);
-#endif
-
-	e100_disable_rx(info);
-	e100_disable_rx_irq(info);
-
-	if (tty_port_initialized(&info->port)) {
-		/*
-		 * Before we drop DTR, make sure the UART transmitter
-		 * has completely drained; this is especially
-		 * important as we have a transmit FIFO!
-		 */
-		rs_wait_until_sent(tty, HZ);
-	}
-
-	shutdown(info);
-	rs_flush_buffer(tty);
-	tty_ldisc_flush(tty);
-	tty->closing = 0;
-	info->event = 0;
-	info->port.tty = NULL;
-	if (info->port.blocked_open) {
-		if (info->port.close_delay)
-			schedule_timeout_interruptible(info->port.close_delay);
-		wake_up_interruptible(&info->port.open_wait);
-	}
-	local_irq_restore(flags);
-	tty_port_set_active(&info->port, 0);
-
-	/* port closed */
-
-#if defined(CONFIG_ETRAX_RS485)
-	if (info->rs485.flags & SER_RS485_ENABLED) {
-		info->rs485.flags &= ~(SER_RS485_ENABLED);
-#if defined(CONFIG_ETRAX_RS485_ON_PA)
-		*R_PORT_PA_DATA = port_pa_data_shadow &= ~(1 << rs485_pa_bit);
-#endif
-	}
-#endif
-
-	/*
-	 * Release any allocated DMA irq's.
-	 */
-	if (info->dma_in_enabled) {
-		free_irq(info->dma_in_irq_nbr, info);
-		cris_free_dma(info->dma_in_nbr, info->dma_in_irq_description);
-		info->uses_dma_in = 0;
-#ifdef SERIAL_DEBUG_OPEN
-		printk(KERN_DEBUG "DMA irq '%s' freed\n",
-			info->dma_in_irq_description);
-#endif
-	}
-	if (info->dma_out_enabled) {
-		free_irq(info->dma_out_irq_nbr, info);
-		cris_free_dma(info->dma_out_nbr, info->dma_out_irq_description);
-		info->uses_dma_out = 0;
-#ifdef SERIAL_DEBUG_OPEN
-		printk(KERN_DEBUG "DMA irq '%s' freed\n",
-			info->dma_out_irq_description);
-#endif
-	}
-}
-
-/*
- * rs_wait_until_sent() --- wait until the transmitter is empty
- */
-static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
-{
-	unsigned long orig_jiffies;
-	struct e100_serial *info = (struct e100_serial *)tty->driver_data;
-	unsigned long curr_time = jiffies;
-	unsigned long curr_time_usec = GET_JIFFIES_USEC();
-	long elapsed_usec =
-		(curr_time - info->last_tx_active) * (1000000/HZ) +
-		curr_time_usec - info->last_tx_active_usec;
-
-	/*
-	 * Check R_DMA_CHx_STATUS bit 0-6=number of available bytes in FIFO
-	 * R_DMA_CHx_HWSW bit 31-16=nbr of bytes left in DMA buffer (0=64k)
-	 */
-	orig_jiffies = jiffies;
-	while (info->xmit.head != info->xmit.tail || /* More in send queue */
-	       (*info->ostatusadr & 0x007f) ||  /* more in FIFO */
-	       (elapsed_usec < 2*info->char_time_usec)) {
-		schedule_timeout_interruptible(1);
-		if (signal_pending(current))
-			break;
-		if (timeout && time_after(jiffies, orig_jiffies + timeout))
-			break;
-		curr_time = jiffies;
-		curr_time_usec = GET_JIFFIES_USEC();
-		elapsed_usec =
-			(curr_time - info->last_tx_active) * (1000000/HZ) +
-			curr_time_usec - info->last_tx_active_usec;
-	}
-	set_current_state(TASK_RUNNING);
-}
-
-/*
- * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
- */
-void
-rs_hangup(struct tty_struct *tty)
-{
-	struct e100_serial * info = (struct e100_serial *)tty->driver_data;
-
-	rs_flush_buffer(tty);
-	shutdown(info);
-	info->event = 0;
-	info->port.count = 0;
-	tty_port_set_active(&info->port, 0);
-	info->port.tty = NULL;
-	wake_up_interruptible(&info->port.open_wait);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_open() and friends
- * ------------------------------------------------------------
- */
-static int
-block_til_ready(struct tty_struct *tty, struct file * filp,
-		struct e100_serial *info)
-{
-	DECLARE_WAITQUEUE(wait, current);
-	unsigned long	flags;
-	int		retval;
-	int		do_clocal = 0;
-
-	/*
-	 * If non-blocking mode is set, or the port is not enabled,
-	 * then make the check up front and then exit.
-	 */
-	if ((filp->f_flags & O_NONBLOCK) || tty_io_error(tty)) {
-		tty_port_set_active(&info->port, 1);
-		return 0;
-	}
-
-	if (C_CLOCAL(tty))
-		do_clocal = 1;
-
-	/*
-	 * Block waiting for the carrier detect and the line to become
-	 * free (i.e., not in use by the callout).  While we are in
-	 * this loop, info->port.count is dropped by one, so that
-	 * rs_close() knows when to free things.  We restore it upon
-	 * exit, either normal or abnormal.
-	 */
-	retval = 0;
-	add_wait_queue(&info->port.open_wait, &wait);
-#ifdef SERIAL_DEBUG_OPEN
-	printk("block_til_ready before block: ttyS%d, count = %d\n",
-	       info->line, info->port.count);
-#endif
-	local_irq_save(flags);
-	info->port.count--;
-	local_irq_restore(flags);
-	info->port.blocked_open++;
-	while (1) {
-		local_irq_save(flags);
-		/* assert RTS and DTR */
-		e100_rts(info, 1);
-		e100_dtr(info, 1);
-		local_irq_restore(flags);
-		set_current_state(TASK_INTERRUPTIBLE);
-		if (tty_hung_up_p(filp) || !tty_port_initialized(&info->port)) {
-#ifdef SERIAL_DO_RESTART
-			if (info->port.flags & ASYNC_HUP_NOTIFY)
-				retval = -EAGAIN;
-			else
-				retval = -ERESTARTSYS;
-#else
-			retval = -EAGAIN;
-#endif
-			break;
-		}
-		if (do_clocal)
-			/* && (do_clocal || DCD_IS_ASSERTED) */
-			break;
-		if (signal_pending(current)) {
-			retval = -ERESTARTSYS;
-			break;
-		}
-#ifdef SERIAL_DEBUG_OPEN
-		printk("block_til_ready blocking: ttyS%d, count = %d\n",
-		       info->line, info->port.count);
-#endif
-		tty_unlock(tty);
-		schedule();
-		tty_lock(tty);
-	}
-	set_current_state(TASK_RUNNING);
-	remove_wait_queue(&info->port.open_wait, &wait);
-	if (!tty_hung_up_p(filp))
-		info->port.count++;
-	info->port.blocked_open--;
-#ifdef SERIAL_DEBUG_OPEN
-	printk("block_til_ready after blocking: ttyS%d, count = %d\n",
-	       info->line, info->port.count);
-#endif
-	if (retval)
-		return retval;
-	tty_port_set_active(&info->port, 1);
-	return 0;
-}
-
-static void
-deinit_port(struct e100_serial *info)
-{
-	if (info->dma_out_enabled) {
-		cris_free_dma(info->dma_out_nbr, info->dma_out_irq_description);
-		free_irq(info->dma_out_irq_nbr, info);
-	}
-	if (info->dma_in_enabled) {
-		cris_free_dma(info->dma_in_nbr, info->dma_in_irq_description);
-		free_irq(info->dma_in_irq_nbr, info);
-	}
-}
-
-/*
- * This routine is called whenever a serial port is opened.
- * It performs the serial-specific initialization for the tty structure.
- */
-static int
-rs_open(struct tty_struct *tty, struct file * filp)
-{
-	struct e100_serial	*info;
-	int 			retval;
-	int                     allocated_resources = 0;
-
-	info = rs_table + tty->index;
-	if (!info->enabled)
-		return -ENODEV;
-
-#ifdef SERIAL_DEBUG_OPEN
-        printk("[%d] rs_open %s, count = %d\n", current->pid, tty->name,
- 	       info->port.count);
-#endif
-
-	info->port.count++;
-	tty->driver_data = info;
-	info->port.tty = tty;
-
-	info->port.low_latency = !!(info->port.flags & ASYNC_LOW_LATENCY);
-
-	/*
-	 * If DMA is enabled try to allocate the irq's.
-	 */
-	if (info->port.count == 1) {
-		allocated_resources = 1;
-		if (info->dma_in_enabled) {
-			if (request_irq(info->dma_in_irq_nbr,
-					rec_interrupt,
-					info->dma_in_irq_flags,
-					info->dma_in_irq_description,
-					info)) {
-				printk(KERN_WARNING "DMA irq '%s' busy; "
-					"falling back to non-DMA mode\n",
-					info->dma_in_irq_description);
-				/* Make sure we never try to use DMA in */
-				/* for the port again. */
-				info->dma_in_enabled = 0;
-			} else if (cris_request_dma(info->dma_in_nbr,
-					info->dma_in_irq_description,
-					DMA_VERBOSE_ON_ERROR,
-					info->dma_owner)) {
-				free_irq(info->dma_in_irq_nbr, info);
-				printk(KERN_WARNING "DMA '%s' busy; "
-					"falling back to non-DMA mode\n",
-					info->dma_in_irq_description);
-				/* Make sure we never try to use DMA in */
-				/* for the port again. */
-				info->dma_in_enabled = 0;
-			}
-#ifdef SERIAL_DEBUG_OPEN
-			else
-				printk(KERN_DEBUG "DMA irq '%s' allocated\n",
-					info->dma_in_irq_description);
-#endif
-		}
-		if (info->dma_out_enabled) {
-			if (request_irq(info->dma_out_irq_nbr,
-					       tr_interrupt,
-					       info->dma_out_irq_flags,
-					       info->dma_out_irq_description,
-					       info)) {
-				printk(KERN_WARNING "DMA irq '%s' busy; "
-					"falling back to non-DMA mode\n",
-					info->dma_out_irq_description);
-				/* Make sure we never try to use DMA out */
-				/* for the port again. */
-				info->dma_out_enabled = 0;
-			} else if (cris_request_dma(info->dma_out_nbr,
-					     info->dma_out_irq_description,
-					     DMA_VERBOSE_ON_ERROR,
-					     info->dma_owner)) {
-				free_irq(info->dma_out_irq_nbr, info);
-				printk(KERN_WARNING "DMA '%s' busy; "
-					"falling back to non-DMA mode\n",
-					info->dma_out_irq_description);
-				/* Make sure we never try to use DMA out */
-				/* for the port again. */
-				info->dma_out_enabled = 0;
-			}
-#ifdef SERIAL_DEBUG_OPEN
-			else
-				printk(KERN_DEBUG "DMA irq '%s' allocated\n",
-					info->dma_out_irq_description);
-#endif
-		}
-	}
-
-	/*
-	 * Start up the serial port
-	 */
-
-	retval = startup(info);
-	if (retval) {
-		if (allocated_resources)
-			deinit_port(info);
-
-		/* FIXME Decrease count info->port.count here too? */
-		return retval;
-	}
-
-
-	retval = block_til_ready(tty, filp, info);
-	if (retval) {
-#ifdef SERIAL_DEBUG_OPEN
-		printk("rs_open returning after block_til_ready with %d\n",
-		       retval);
-#endif
-		if (allocated_resources)
-			deinit_port(info);
-
-		return retval;
-	}
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk("rs_open ttyS%d successful...\n", info->line);
-#endif
-	DLOG_INT_TRIG( log_int_pos = 0);
-
-	DFLIP(	if (info->line == SERIAL_DEBUG_LINE) {
-			info->icount.rx = 0;
-		} );
-
-	return 0;
-}
-
-#ifdef CONFIG_PROC_FS
-/*
- * /proc fs routines....
- */
-
-static void seq_line_info(struct seq_file *m, struct e100_serial *info)
-{
-	unsigned long tmp;
-
-	seq_printf(m, "%d: uart:E100 port:%lX irq:%d",
-		   info->line, (unsigned long)info->ioport, info->irq);
-
-	if (!info->ioport || (info->type == PORT_UNKNOWN)) {
-		seq_printf(m, "\n");
-		return;
-	}
-
-	seq_printf(m, " baud:%d", info->baud);
-	seq_printf(m, " tx:%lu rx:%lu",
-		       (unsigned long)info->icount.tx,
-		       (unsigned long)info->icount.rx);
-	tmp = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-	if (tmp)
-		seq_printf(m, " tx_pend:%lu/%lu",
-			   (unsigned long)tmp,
-			   (unsigned long)SERIAL_XMIT_SIZE);
-
-	seq_printf(m, " rx_pend:%lu/%lu",
-		   (unsigned long)info->recv_cnt,
-		   (unsigned long)info->max_recv_cnt);
-
-#if 1
-	if (info->port.tty) {
-		if (info->port.tty->stopped)
-			seq_printf(m, " stopped:%i",
-				   (int)info->port.tty->stopped);
-	}
-
-	{
-		unsigned char rstat = info->ioport[REG_STATUS];
-		if (rstat & IO_MASK(R_SERIAL0_STATUS, xoff_detect))
-			seq_printf(m, " xoff_detect:1");
-	}
-
-#endif
-
-	if (info->icount.frame)
-		seq_printf(m, " fe:%lu", (unsigned long)info->icount.frame);
-
-	if (info->icount.parity)
-		seq_printf(m, " pe:%lu", (unsigned long)info->icount.parity);
-
-	if (info->icount.brk)
-		seq_printf(m, " brk:%lu", (unsigned long)info->icount.brk);
-
-	if (info->icount.overrun)
-		seq_printf(m, " oe:%lu", (unsigned long)info->icount.overrun);
-
-	/*
-	 * Last thing is the RS-232 status lines
-	 */
-	if (!E100_RTS_GET(info))
-		seq_puts(m, "|RTS");
-	if (!E100_CTS_GET(info))
-		seq_puts(m, "|CTS");
-	if (!E100_DTR_GET(info))
-		seq_puts(m, "|DTR");
-	if (!E100_DSR_GET(info))
-		seq_puts(m, "|DSR");
-	if (!E100_CD_GET(info))
-		seq_puts(m, "|CD");
-	if (!E100_RI_GET(info))
-		seq_puts(m, "|RI");
-	seq_puts(m, "\n");
-}
-
-
-static int crisv10_proc_show(struct seq_file *m, void *v)
-{
-	int i;
-
-	seq_printf(m, "serinfo:1.0 driver:%s\n", serial_version);
-
-	for (i = 0; i < NR_PORTS; i++) {
-		if (!rs_table[i].enabled)
-			continue;
-		seq_line_info(m, &rs_table[i]);
-	}
-#ifdef DEBUG_LOG_INCLUDED
-	for (i = 0; i < debug_log_pos; i++) {
-		seq_printf(m, "%-4i %lu.%lu ",
-			 i, debug_log[i].time,
-			 timer_data_to_ns(debug_log[i].timer_data));
-		seq_printf(m, debug_log[i].string, debug_log[i].value);
-	}
-	seq_printf(m, "debug_log %i/%i\n", i, DEBUG_LOG_SIZE);
-	debug_log_pos = 0;
-#endif
-	return 0;
-}
-
-static int crisv10_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, crisv10_proc_show, NULL);
-}
-
-static const struct file_operations crisv10_proc_fops = {
-	.owner		= THIS_MODULE,
-	.open		= crisv10_proc_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
-#endif
-
-
-/* Finally, routines used to initialize the serial driver. */
-
-static void show_serial_version(void)
-{
-	printk(KERN_INFO
-	       "ETRAX 100LX serial-driver %s, "
-	       "(c) 2000-2004 Axis Communications AB\r\n",
-	       &serial_version[11]); /* "$Revision: x.yy" */
-}
-
-/* rs_init inits the driver at boot (using the initcall chain) */
-
-static const struct tty_operations rs_ops = {
-	.open = rs_open,
-	.close = rs_close,
-	.write = rs_write,
-	.flush_chars = rs_flush_chars,
-	.write_room = rs_write_room,
-	.chars_in_buffer = rs_chars_in_buffer,
-	.flush_buffer = rs_flush_buffer,
-	.ioctl = rs_ioctl,
-	.throttle = rs_throttle,
-        .unthrottle = rs_unthrottle,
-	.set_termios = rs_set_termios,
-	.stop = rs_stop,
-	.start = rs_start,
-	.hangup = rs_hangup,
-	.break_ctl = rs_break,
-	.send_xchar = rs_send_xchar,
-	.wait_until_sent = rs_wait_until_sent,
-	.tiocmget = rs_tiocmget,
-	.tiocmset = rs_tiocmset,
-#ifdef CONFIG_PROC_FS
-	.proc_fops = &crisv10_proc_fops,
-#endif
-};
-
-static int __init rs_init(void)
-{
-	int i;
-	struct e100_serial *info;
-	struct tty_driver *driver = alloc_tty_driver(NR_PORTS);
-
-	if (!driver)
-		return -ENOMEM;
-
-	show_serial_version();
-
-	/* Setup the timed flush handler system */
-
-#if !defined(CONFIG_ETRAX_SERIAL_FAST_TIMER)
-	timer_setup(&flush_timer, timed_flush_handler, 0);
-	mod_timer(&flush_timer, jiffies + 5);
-#endif
-
-#if defined(CONFIG_ETRAX_RS485)
-#if defined(CONFIG_ETRAX_RS485_ON_PA)
-	if (cris_io_interface_allocate_pins(if_serial_0, 'a', rs485_pa_bit,
-			rs485_pa_bit)) {
-		printk(KERN_ERR "ETRAX100LX serial: Could not allocate "
-			"RS485 pin\n");
-		put_tty_driver(driver);
-		return -EBUSY;
-	}
-#endif
-#endif
-
-	/* Initialize the tty_driver structure */
-
-	driver->driver_name = "serial";
-	driver->name = "ttyS";
-	driver->major = TTY_MAJOR;
-	driver->minor_start = 64;
-	driver->type = TTY_DRIVER_TYPE_SERIAL;
-	driver->subtype = SERIAL_TYPE_NORMAL;
-	driver->init_termios = tty_std_termios;
-	driver->init_termios.c_cflag =
-		B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
-	driver->init_termios.c_ispeed = 115200;
-	driver->init_termios.c_ospeed = 115200;
-	driver->flags = TTY_DRIVER_REAL_RAW;
-
-	tty_set_operations(driver, &rs_ops);
-        serial_driver = driver;
-
-	/* do some initializing for the separate ports */
-	for (i = 0, info = rs_table; i < NR_PORTS; i++,info++) {
-		if (info->enabled) {
-			if (cris_request_io_interface(info->io_if,
-					info->io_if_description)) {
-				printk(KERN_ERR "ETRAX100LX async serial: "
-					"Could not allocate IO pins for "
-					"%s, port %d\n",
-					info->io_if_description, i);
-				info->enabled = 0;
-			}
-		}
-		tty_port_init(&info->port);
-		info->uses_dma_in = 0;
-		info->uses_dma_out = 0;
-		info->line = i;
-		info->port.tty = NULL;
-		info->type = PORT_ETRAX;
-		info->tr_running = 0;
-		info->forced_eop = 0;
-		info->baud_base = DEF_BAUD_BASE;
-		info->custom_divisor = 0;
-		info->x_char = 0;
-		info->event = 0;
-		info->xmit.buf = NULL;
-		info->xmit.tail = info->xmit.head = 0;
-		info->first_recv_buffer = info->last_recv_buffer = NULL;
-		info->recv_cnt = info->max_recv_cnt = 0;
-		info->last_tx_active_usec = 0;
-		info->last_tx_active = 0;
-
-#if defined(CONFIG_ETRAX_RS485)
-		/* Set sane defaults */
-		info->rs485.flags &= ~(SER_RS485_RTS_ON_SEND);
-		info->rs485.flags |= SER_RS485_RTS_AFTER_SEND;
-		info->rs485.delay_rts_before_send = 0;
-		info->rs485.flags &= ~(SER_RS485_ENABLED);
-#endif
-		INIT_WORK(&info->work, do_softint);
-
-		if (info->enabled) {
-			printk(KERN_INFO "%s%d at %p is a builtin UART with DMA\n",
-			       serial_driver->name, info->line, info->ioport);
-		}
-		tty_port_link_device(&info->port, driver, i);
-	}
-
-	if (tty_register_driver(driver))
-		panic("Couldn't register serial driver\n");
-
-#ifdef CONFIG_ETRAX_FAST_TIMER
-#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
-	memset(fast_timers, 0, sizeof(fast_timers));
-#endif
-#ifdef CONFIG_ETRAX_RS485
-	memset(fast_timers_rs485, 0, sizeof(fast_timers_rs485));
-#endif
-	fast_timer_init();
-#endif
-
-#ifndef CONFIG_ETRAX_KGDB
-	/* Not needed in simulator.  May only complicate stuff. */
-	/* hook the irq's for DMA channel 6 and 7, serial output and input, and some more... */
-
-	if (request_irq(SERIAL_IRQ_NBR, ser_interrupt,
-			IRQF_SHARED, "serial ", driver))
-		panic("%s: Failed to request irq8", __func__);
-
-#endif
-
-	return 0;
-}
-
-/* this makes sure that rs_init is called during kernel boot */
-device_initcall(rs_init);
diff --git a/drivers/tty/serial/crisv10.h b/drivers/tty/serial/crisv10.h
deleted file mode 100644
index 79ba2bc95d3d..000000000000
--- a/drivers/tty/serial/crisv10.h
+++ /dev/null
@@ -1,133 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * serial.h: Arch-dep definitions for the Etrax100 serial driver.
- *
- * Copyright (C) 1998-2007 Axis Communications AB
- */
-
-#ifndef _ETRAX_SERIAL_H
-#define _ETRAX_SERIAL_H
-
-#include <linux/circ_buf.h>
-#include <asm/termios.h>
-#include <asm/dma.h>
-#include <arch/io_interface_mux.h>
-
-/* Software state per channel */
-
-#ifdef __KERNEL__
-/*
- * This is our internal structure for each serial port's state.
- *
- * Many fields are paralleled by the structure used by the serial_struct
- * structure.
- *
- * For definitions of the flags field, see tty.h
- */
-
-#define SERIAL_RECV_DESCRIPTORS 8
-
-struct etrax_recv_buffer {
-	struct etrax_recv_buffer *next;
-	unsigned short length;
-	unsigned char error;
-	unsigned char pad;
-
-	unsigned char buffer[0];
-};
-
-struct e100_serial {
-	struct tty_port port;
-	int baud;
-	volatile u8	*ioport;	/* R_SERIALx_CTRL */
-	u32		irq;	/* bitnr in R_IRQ_MASK2 for dmaX_descr */
-
-	/* Output registers */
-	volatile u8 *oclrintradr;	/* adr to R_DMA_CHx_CLR_INTR */
-	volatile u32 *ofirstadr;	/* adr to R_DMA_CHx_FIRST */
-	volatile u8 *ocmdadr;		/* adr to R_DMA_CHx_CMD */
-	const volatile u8 *ostatusadr;	/* adr to R_DMA_CHx_STATUS */
-
-	/* Input registers */
-	volatile u8 *iclrintradr;	/* adr to R_DMA_CHx_CLR_INTR */
-	volatile u32 *ifirstadr;	/* adr to R_DMA_CHx_FIRST */
-	volatile u8 *icmdadr;		/* adr to R_DMA_CHx_CMD */
-	volatile u32 *idescradr;	/* adr to R_DMA_CHx_DESCR */
-
-	u8 rx_ctrl;	/* shadow for R_SERIALx_REC_CTRL */
-	u8 tx_ctrl;	/* shadow for R_SERIALx_TR_CTRL */
-	u8 iseteop;	/* bit number for R_SET_EOP for the input dma */
-	int enabled;	/* Set to 1 if the port is enabled in HW config */
-
-	u8 dma_out_enabled;	/* Set to 1 if DMA should be used */
-	u8 dma_in_enabled;	/* Set to 1 if DMA should be used */
-
-	/* end of fields defined in rs_table[] in .c-file */
-	int		dma_owner;
-	unsigned int	dma_in_nbr;
-	unsigned int	dma_out_nbr;
-	unsigned int	dma_in_irq_nbr;
-	unsigned int	dma_out_irq_nbr;
-	unsigned long	dma_in_irq_flags;
-	unsigned long	dma_out_irq_flags;
-	char		*dma_in_irq_description;
-	char		*dma_out_irq_description;
-
-	enum cris_io_interface io_if;
-	char            *io_if_description;
-
-	u8		uses_dma_in;  /* Set to 1 if DMA is used */
-	u8		uses_dma_out; /* Set to 1 if DMA is used */
-	u8		forced_eop;   /* a fifo eop has been forced */
-	int			baud_base;     /* For special baudrates */
-	int			custom_divisor; /* For special baudrates */
-	struct etrax_dma_descr	tr_descr;
-	struct etrax_dma_descr	rec_descr[SERIAL_RECV_DESCRIPTORS];
-	int			cur_rec_descr;
-
-	volatile int		tr_running; /* 1 if output is running */
-
-	int			x_char;	/* xon/xoff character */
-	unsigned long		event;
-	int			line;
-	int			type;  /* PORT_ETRAX */
-	struct circ_buf		xmit;
-	struct etrax_recv_buffer *first_recv_buffer;
-	struct etrax_recv_buffer *last_recv_buffer;
-	unsigned int		recv_cnt;
-	unsigned int		max_recv_cnt;
-
-	struct work_struct	work;
-	struct async_icount	icount;   /* error-statistics etc.*/
-
-	unsigned long char_time_usec;       /* The time for 1 char, in usecs */
-	unsigned long flush_time_usec;      /* How often we should flush */
-	unsigned long last_tx_active_usec;  /* Last tx usec in the jiffies */
-	unsigned long last_tx_active;       /* Last tx time in jiffies */
-	unsigned long last_rx_active_usec;  /* Last rx usec in the jiffies */
-	unsigned long last_rx_active;       /* Last rx time in jiffies */
-
-	int break_detected_cnt;
-	int errorcode;
-
-#ifdef CONFIG_ETRAX_RS485
-	struct serial_rs485	rs485;  /* RS-485 support */
-#endif
-};
-
-/* this PORT is not in the standard serial.h. it's not actually used for
- * anything since we only have one type of async serial-port anyway in this
- * system.
- */
-
-#define PORT_ETRAX 1
-
-/*
- * Events are used to schedule things to happen at timer-interrupt
- * time, instead of at rs interrupt time.
- */
-#define RS_EVENT_WRITE_WAKEUP	0
-
-#endif /* __KERNEL__ */
-
-#endif /* !_ETRAX_SERIAL_H */
diff --git a/drivers/tty/serial/etraxfs-uart.c b/drivers/tty/serial/etraxfs-uart.c
deleted file mode 100644
index 24bf6bfb29b4..000000000000
--- a/drivers/tty/serial/etraxfs-uart.c
+++ /dev/null
@@ -1,960 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/platform_device.h>
-#include <linux/serial_core.h>
-#include <linux/tty_flip.h>
-#include <linux/of.h>
-#include <linux/gpio.h>
-#include <linux/of_irq.h>
-#include <linux/of_address.h>
-#include <hwregs/ser_defs.h>
-
-#include "serial_mctrl_gpio.h"
-
-#define DRV_NAME "etraxfs-uart"
-#define UART_NR CONFIG_ETRAX_SERIAL_PORTS
-
-#define MODIFY_REG(instance, reg, var)				\
-	do {							\
-		if (REG_RD_INT(ser, instance, reg) !=		\
-		    REG_TYPE_CONV(int, reg_ser_##reg, var))	\
-			REG_WR(ser, instance, reg, var);	\
-	} while (0)
-
-struct uart_cris_port {
-	struct uart_port port;
-
-	int initialized;
-	int irq;
-
-	void __iomem *regi_ser;
-
-	struct mctrl_gpios *gpios;
-
-	int write_ongoing;
-};
-
-static struct uart_driver etraxfs_uart_driver;
-static struct uart_port *console_port;
-static int console_baud = 115200;
-static struct uart_cris_port *etraxfs_uart_ports[UART_NR];
-
-static void cris_serial_port_init(struct uart_port *port, int line);
-static void etraxfs_uart_stop_rx(struct uart_port *port);
-static inline void etraxfs_uart_start_tx_bottom(struct uart_port *port);
-
-#ifdef CONFIG_SERIAL_ETRAXFS_CONSOLE
-static void
-cris_console_write(struct console *co, const char *s, unsigned int count)
-{
-	struct uart_cris_port *up;
-	int i;
-	reg_ser_r_stat_din stat;
-	reg_ser_rw_tr_dma_en tr_dma_en, old;
-
-	up = etraxfs_uart_ports[co->index];
-
-	if (!up)
-		return;
-
-	/* Switch to manual mode. */
-	tr_dma_en = old = REG_RD(ser, up->regi_ser, rw_tr_dma_en);
-	if (tr_dma_en.en == regk_ser_yes) {
-		tr_dma_en.en = regk_ser_no;
-		REG_WR(ser, up->regi_ser, rw_tr_dma_en, tr_dma_en);
-	}
-
-	/* Send data. */
-	for (i = 0; i < count; i++) {
-		/* LF -> CRLF */
-		if (s[i] == '\n') {
-			do {
-				stat = REG_RD(ser, up->regi_ser, r_stat_din);
-			} while (!stat.tr_rdy);
-			REG_WR_INT(ser, up->regi_ser, rw_dout, '\r');
-		}
-		/* Wait until transmitter is ready and send. */
-		do {
-			stat = REG_RD(ser, up->regi_ser, r_stat_din);
-		} while (!stat.tr_rdy);
-		REG_WR_INT(ser, up->regi_ser, rw_dout, s[i]);
-	}
-
-	/* Restore mode. */
-	if (tr_dma_en.en != old.en)
-		REG_WR(ser, up->regi_ser, rw_tr_dma_en, old);
-}
-
-static int __init
-cris_console_setup(struct console *co, char *options)
-{
-	struct uart_port *port;
-	int baud = 115200;
-	int bits = 8;
-	int parity = 'n';
-	int flow = 'n';
-
-	if (co->index < 0 || co->index >= UART_NR)
-		co->index = 0;
-	port = &etraxfs_uart_ports[co->index]->port;
-	console_port = port;
-
-	co->flags |= CON_CONSDEV;
-
-	if (options)
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-	console_baud = baud;
-	cris_serial_port_init(port, co->index);
-	uart_set_options(port, co, baud, parity, bits, flow);
-
-	return 0;
-}
-
-static struct console cris_console = {
-	.name = "ttyS",
-	.write = cris_console_write,
-	.device = uart_console_device,
-	.setup = cris_console_setup,
-	.flags = CON_PRINTBUFFER,
-	.index = -1,
-	.data = &etraxfs_uart_driver,
-};
-#endif /* CONFIG_SERIAL_ETRAXFS_CONSOLE */
-
-static struct uart_driver etraxfs_uart_driver = {
-	.owner = THIS_MODULE,
-	.driver_name = "serial",
-	.dev_name = "ttyS",
-	.major = TTY_MAJOR,
-	.minor = 64,
-	.nr = UART_NR,
-#ifdef CONFIG_SERIAL_ETRAXFS_CONSOLE
-	.cons = &cris_console,
-#endif /* CONFIG_SERIAL_ETRAXFS_CONSOLE */
-};
-
-static inline int crisv32_serial_get_rts(struct uart_cris_port *up)
-{
-	void __iomem *regi_ser = up->regi_ser;
-	/*
-	 * Return what the user has controlled rts to or
-	 * what the pin is? (if auto_rts is used it differs during tx)
-	 */
-	reg_ser_r_stat_din rstat = REG_RD(ser, regi_ser, r_stat_din);
-
-	return !(rstat.rts_n == regk_ser_active);
-}
-
-/*
- * A set = 0 means 3.3V on the pin, bitvalue: 0=active, 1=inactive
- *                                            0=0V    , 1=3.3V
- */
-static inline void crisv32_serial_set_rts(struct uart_cris_port *up,
-					  int set, int force)
-{
-	void __iomem *regi_ser = up->regi_ser;
-
-	unsigned long flags;
-	reg_ser_rw_rec_ctrl rec_ctrl;
-
-	local_irq_save(flags);
-	rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl);
-
-	if (set)
-		rec_ctrl.rts_n = regk_ser_active;
-	else
-		rec_ctrl.rts_n = regk_ser_inactive;
-	REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl);
-	local_irq_restore(flags);
-}
-
-static inline int crisv32_serial_get_cts(struct uart_cris_port *up)
-{
-	void __iomem *regi_ser = up->regi_ser;
-	reg_ser_r_stat_din rstat = REG_RD(ser, regi_ser, r_stat_din);
-
-	return (rstat.cts_n == regk_ser_active);
-}
-
-/*
- * Send a single character for XON/XOFF purposes.  We do it in this separate
- * function instead of the alternative support port.x_char, in the ...start_tx
- * function, so we don't mix up this case with possibly enabling transmission
- * of queued-up data (in case that's disabled after *receiving* an XOFF or
- * negative CTS).  This function is used for both DMA and non-DMA case; see HW
- * docs specifically blessing sending characters manually when DMA for
- * transmission is enabled and running.  We may be asked to transmit despite
- * the transmitter being disabled by a ..._stop_tx call so we need to enable
- * it temporarily but restore the state afterwards.
- */
-static void etraxfs_uart_send_xchar(struct uart_port *port, char ch)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	reg_ser_rw_dout dout = { .data = ch };
-	reg_ser_rw_ack_intr ack_intr = { .tr_rdy = regk_ser_yes };
-	reg_ser_r_stat_din rstat;
-	reg_ser_rw_tr_ctrl prev_tr_ctrl, tr_ctrl;
-	void __iomem *regi_ser = up->regi_ser;
-	unsigned long flags;
-
-	/*
-	 * Wait for tr_rdy in case a character is already being output.  Make
-	 * sure we have integrity between the register reads and the writes
-	 * below, but don't busy-wait with interrupts off and the port lock
-	 * taken.
-	 */
-	spin_lock_irqsave(&port->lock, flags);
-	do {
-		spin_unlock_irqrestore(&port->lock, flags);
-		spin_lock_irqsave(&port->lock, flags);
-		prev_tr_ctrl = tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl);
-		rstat = REG_RD(ser, regi_ser, r_stat_din);
-	} while (!rstat.tr_rdy);
-
-	/*
-	 * Ack an interrupt if one was just issued for the previous character
-	 * that was output.  This is required for non-DMA as the interrupt is
-	 * used as the only indicator that the transmitter is ready and it
-	 * isn't while this x_char is being transmitted.
-	 */
-	REG_WR(ser, regi_ser, rw_ack_intr, ack_intr);
-
-	/* Enable the transmitter in case it was disabled. */
-	tr_ctrl.stop = 0;
-	REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
-
-	/*
-	 * Finally, send the blessed character; nothing should stop it now,
-	 * except for an xoff-detected state, which we'll handle below.
-	 */
-	REG_WR(ser, regi_ser, rw_dout, dout);
-	up->port.icount.tx++;
-
-	/* There might be an xoff state to clear. */
-	rstat = REG_RD(ser, up->regi_ser, r_stat_din);
-
-	/*
-	 * Clear any xoff state that *may* have been there to
-	 * inhibit transmission of the character.
-	 */
-	if (rstat.xoff_detect) {
-		reg_ser_rw_xoff_clr xoff_clr = { .clr = 1 };
-		reg_ser_rw_tr_dma_en tr_dma_en;
-
-		REG_WR(ser, regi_ser, rw_xoff_clr, xoff_clr);
-		tr_dma_en = REG_RD(ser, regi_ser, rw_tr_dma_en);
-
-		/*
-		 * If we had an xoff state but cleared it, instead sneak in a
-		 * disabled state for the transmitter, after the character we
-		 * sent.  Thus we keep the port disabled, just as if the xoff
-		 * state was still in effect (or actually, as if stop_tx had
-		 * been called, as we stop DMA too).
-		 */
-		prev_tr_ctrl.stop = 1;
-
-		tr_dma_en.en = 0;
-		REG_WR(ser, regi_ser, rw_tr_dma_en, tr_dma_en);
-	}
-
-	/* Restore "previous" enabled/disabled state of the transmitter. */
-	REG_WR(ser, regi_ser, rw_tr_ctrl, prev_tr_ctrl);
-
-	spin_unlock_irqrestore(&port->lock, flags);
-}
-
-/*
- * Do not spin_lock_irqsave or disable interrupts by other means here; it's
- * already done by the caller.
- */
-static void etraxfs_uart_start_tx(struct uart_port *port)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-
-	/* we have already done below if a write is ongoing */
-	if (up->write_ongoing)
-		return;
-
-	/* Signal that write is ongoing */
-	up->write_ongoing = 1;
-
-	etraxfs_uart_start_tx_bottom(port);
-}
-
-static inline void etraxfs_uart_start_tx_bottom(struct uart_port *port)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	void __iomem *regi_ser = up->regi_ser;
-	reg_ser_rw_tr_ctrl tr_ctrl;
-	reg_ser_rw_intr_mask intr_mask;
-
-	tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl);
-	tr_ctrl.stop = regk_ser_no;
-	REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
-	intr_mask = REG_RD(ser, regi_ser, rw_intr_mask);
-	intr_mask.tr_rdy = regk_ser_yes;
-	REG_WR(ser, regi_ser, rw_intr_mask, intr_mask);
-}
-
-/*
- * This function handles both the DMA and non-DMA case by ordering the
- * transmitter to stop of after the current character.  We don't need to wait
- * for any such character to be completely transmitted; we do that where it
- * matters, like in etraxfs_uart_set_termios.  Don't busy-wait here; see
- * Documentation/serial/driver: this function is called within
- * spin_lock_irq{,save} and thus separate ones would be disastrous (when SMP).
- * There's no documented need to set the txd pin to any particular value;
- * break setting is controlled solely by etraxfs_uart_break_ctl.
- */
-static void etraxfs_uart_stop_tx(struct uart_port *port)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	void __iomem *regi_ser = up->regi_ser;
-	reg_ser_rw_tr_ctrl tr_ctrl;
-	reg_ser_rw_intr_mask intr_mask;
-	reg_ser_rw_tr_dma_en tr_dma_en = {0};
-	reg_ser_rw_xoff_clr xoff_clr = {0};
-
-	/*
-	 * For the non-DMA case, we'd get a tr_rdy interrupt that we're not
-	 * interested in as we're not transmitting any characters.  For the
-	 * DMA case, that interrupt is already turned off, but no reason to
-	 * waste code on conditionals here.
-	 */
-	intr_mask = REG_RD(ser, regi_ser, rw_intr_mask);
-	intr_mask.tr_rdy = regk_ser_no;
-	REG_WR(ser, regi_ser, rw_intr_mask, intr_mask);
-
-	tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl);
-	tr_ctrl.stop = 1;
-	REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
-
-	/*
-	 * Always clear possible hardware xoff-detected state here, no need to
-	 * unnecessary consider mctrl settings and when they change.  We clear
-	 * it here rather than in start_tx: both functions are called as the
-	 * effect of XOFF processing, but start_tx is also called when upper
-	 * levels tell the driver that there are more characters to send, so
-	 * avoid adding code there.
-	 */
-	xoff_clr.clr = 1;
-	REG_WR(ser, regi_ser, rw_xoff_clr, xoff_clr);
-
-	/*
-	 * Disable transmitter DMA, so that if we're in XON/XOFF, we can send
-	 * those single characters without also giving go-ahead for queued up
-	 * DMA data.
-	 */
-	tr_dma_en.en = 0;
-	REG_WR(ser, regi_ser, rw_tr_dma_en, tr_dma_en);
-
-	/*
-	 * Make sure that write_ongoing is reset when stopping tx.
-	 */
-	up->write_ongoing = 0;
-}
-
-static void etraxfs_uart_stop_rx(struct uart_port *port)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	void __iomem *regi_ser = up->regi_ser;
-	reg_ser_rw_rec_ctrl rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl);
-
-	rec_ctrl.en = regk_ser_no;
-	REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl);
-}
-
-static unsigned int etraxfs_uart_tx_empty(struct uart_port *port)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	unsigned long flags;
-	unsigned int ret;
-	reg_ser_r_stat_din rstat = {0};
-
-	spin_lock_irqsave(&up->port.lock, flags);
-
-	rstat = REG_RD(ser, up->regi_ser, r_stat_din);
-	ret = rstat.tr_empty ? TIOCSER_TEMT : 0;
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-	return ret;
-}
-static unsigned int etraxfs_uart_get_mctrl(struct uart_port *port)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	unsigned int ret;
-
-	ret = 0;
-	if (crisv32_serial_get_rts(up))
-		ret |= TIOCM_RTS;
-	if (crisv32_serial_get_cts(up))
-		ret |= TIOCM_CTS;
-	return mctrl_gpio_get(up->gpios, &ret);
-}
-
-static void etraxfs_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-
-	crisv32_serial_set_rts(up, mctrl & TIOCM_RTS ? 1 : 0, 0);
-	mctrl_gpio_set(up->gpios, mctrl);
-}
-
-static void etraxfs_uart_break_ctl(struct uart_port *port, int break_state)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	unsigned long flags;
-	reg_ser_rw_tr_ctrl tr_ctrl;
-	reg_ser_rw_tr_dma_en tr_dma_en;
-	reg_ser_rw_intr_mask intr_mask;
-
-	spin_lock_irqsave(&up->port.lock, flags);
-	tr_ctrl = REG_RD(ser, up->regi_ser, rw_tr_ctrl);
-	tr_dma_en = REG_RD(ser, up->regi_ser, rw_tr_dma_en);
-	intr_mask = REG_RD(ser, up->regi_ser, rw_intr_mask);
-
-	if (break_state != 0) { /* Send break */
-		/*
-		 * We need to disable DMA (if used) or tr_rdy interrupts if no
-		 * DMA.  No need to make this conditional on use of DMA;
-		 * disabling will be a no-op for the other mode.
-		 */
-		intr_mask.tr_rdy = regk_ser_no;
-		tr_dma_en.en = 0;
-
-		/*
-		 * Stop transmission and set the txd pin to 0 after the
-		 * current character.  The txd setting will take effect after
-		 * any current transmission has completed.
-		 */
-		tr_ctrl.stop = 1;
-		tr_ctrl.txd = 0;
-	} else {
-		/* Re-enable the serial interrupt. */
-		intr_mask.tr_rdy = regk_ser_yes;
-
-		tr_ctrl.stop = 0;
-		tr_ctrl.txd = 1;
-	}
-	REG_WR(ser, up->regi_ser, rw_tr_ctrl, tr_ctrl);
-	REG_WR(ser, up->regi_ser, rw_tr_dma_en, tr_dma_en);
-	REG_WR(ser, up->regi_ser, rw_intr_mask, intr_mask);
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static void
-transmit_chars_no_dma(struct uart_cris_port *up)
-{
-	int max_count;
-	struct circ_buf *xmit = &up->port.state->xmit;
-
-	void __iomem *regi_ser = up->regi_ser;
-	reg_ser_r_stat_din rstat;
-	reg_ser_rw_ack_intr ack_intr = { .tr_rdy = regk_ser_yes };
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
-		/* No more to send, so disable the interrupt. */
-		reg_ser_rw_intr_mask intr_mask;
-
-		intr_mask = REG_RD(ser, regi_ser, rw_intr_mask);
-		intr_mask.tr_rdy = 0;
-		intr_mask.tr_empty = 0;
-		REG_WR(ser, regi_ser, rw_intr_mask, intr_mask);
-		up->write_ongoing = 0;
-		return;
-	}
-
-	/* If the serport is fast, we send up to max_count bytes before
-	   exiting the loop.  */
-	max_count = 64;
-	do {
-		reg_ser_rw_dout dout = { .data = xmit->buf[xmit->tail] };
-
-		REG_WR(ser, regi_ser, rw_dout, dout);
-		REG_WR(ser, regi_ser, rw_ack_intr, ack_intr);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE-1);
-		up->port.icount.tx++;
-		if (xmit->head == xmit->tail)
-			break;
-		rstat = REG_RD(ser, regi_ser, r_stat_din);
-	} while ((--max_count > 0) && rstat.tr_rdy);
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(&up->port);
-}
-
-static void receive_chars_no_dma(struct uart_cris_port *up)
-{
-	reg_ser_rs_stat_din stat_din;
-	reg_ser_r_stat_din rstat;
-	struct tty_port *port;
-	struct uart_icount *icount;
-	int max_count = 16;
-	char flag;
-	reg_ser_rw_ack_intr ack_intr = { 0 };
-
-	rstat = REG_RD(ser, up->regi_ser, r_stat_din);
-	icount = &up->port.icount;
-	port = &up->port.state->port;
-
-	do {
-		stat_din = REG_RD(ser, up->regi_ser, rs_stat_din);
-
-		flag = TTY_NORMAL;
-		ack_intr.dav = 1;
-		REG_WR(ser, up->regi_ser, rw_ack_intr, ack_intr);
-		icount->rx++;
-
-		if (stat_din.framing_err | stat_din.par_err | stat_din.orun) {
-			if (stat_din.data == 0x00 &&
-			    stat_din.framing_err) {
-				/* Most likely a break. */
-				flag = TTY_BREAK;
-				icount->brk++;
-			} else if (stat_din.par_err) {
-				flag = TTY_PARITY;
-				icount->parity++;
-			} else if (stat_din.orun) {
-				flag = TTY_OVERRUN;
-				icount->overrun++;
-			} else if (stat_din.framing_err) {
-				flag = TTY_FRAME;
-				icount->frame++;
-			}
-		}
-
-		/*
-		 * If this becomes important, we probably *could* handle this
-		 * gracefully by keeping track of the unhandled character.
-		 */
-		if (!tty_insert_flip_char(port, stat_din.data, flag))
-			panic("%s: No tty buffer space", __func__);
-		rstat = REG_RD(ser, up->regi_ser, r_stat_din);
-	} while (rstat.dav && (max_count-- > 0));
-	spin_unlock(&up->port.lock);
-	tty_flip_buffer_push(port);
-	spin_lock(&up->port.lock);
-}
-
-static irqreturn_t
-ser_interrupt(int irq, void *dev_id)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)dev_id;
-	void __iomem *regi_ser;
-	int handled = 0;
-
-	spin_lock(&up->port.lock);
-
-	regi_ser = up->regi_ser;
-
-	if (regi_ser) {
-		reg_ser_r_masked_intr masked_intr;
-
-		masked_intr = REG_RD(ser, regi_ser, r_masked_intr);
-		/*
-		 * Check what interrupts are active before taking
-		 * actions. If DMA is used the interrupt shouldn't
-		 * be enabled.
-		 */
-		if (masked_intr.dav) {
-			receive_chars_no_dma(up);
-			handled = 1;
-		}
-
-		if (masked_intr.tr_rdy) {
-			transmit_chars_no_dma(up);
-			handled = 1;
-		}
-	}
-	spin_unlock(&up->port.lock);
-	return IRQ_RETVAL(handled);
-}
-
-#ifdef CONFIG_CONSOLE_POLL
-static int etraxfs_uart_get_poll_char(struct uart_port *port)
-{
-	reg_ser_rs_stat_din stat;
-	reg_ser_rw_ack_intr ack_intr = { 0 };
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-
-	do {
-		stat = REG_RD(ser, up->regi_ser, rs_stat_din);
-	} while (!stat.dav);
-
-	/* Ack the data_avail interrupt. */
-	ack_intr.dav = 1;
-	REG_WR(ser, up->regi_ser, rw_ack_intr, ack_intr);
-
-	return stat.data;
-}
-
-static void etraxfs_uart_put_poll_char(struct uart_port *port,
-					unsigned char c)
-{
-	reg_ser_r_stat_din stat;
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-
-	do {
-		stat = REG_RD(ser, up->regi_ser, r_stat_din);
-	} while (!stat.tr_rdy);
-	REG_WR_INT(ser, up->regi_ser, rw_dout, c);
-}
-#endif /* CONFIG_CONSOLE_POLL */
-
-static int etraxfs_uart_startup(struct uart_port *port)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	unsigned long flags;
-	reg_ser_rw_intr_mask ser_intr_mask = {0};
-
-	ser_intr_mask.dav = regk_ser_yes;
-
-	if (request_irq(etraxfs_uart_ports[port->line]->irq, ser_interrupt,
-			0, DRV_NAME, etraxfs_uart_ports[port->line]))
-		panic("irq ser%d", port->line);
-
-	spin_lock_irqsave(&up->port.lock, flags);
-
-	REG_WR(ser, up->regi_ser, rw_intr_mask, ser_intr_mask);
-
-	etraxfs_uart_set_mctrl(&up->port, up->port.mctrl);
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-
-	return 0;
-}
-
-static void etraxfs_uart_shutdown(struct uart_port *port)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	unsigned long flags;
-
-	spin_lock_irqsave(&up->port.lock, flags);
-
-	etraxfs_uart_stop_tx(port);
-	etraxfs_uart_stop_rx(port);
-
-	free_irq(etraxfs_uart_ports[port->line]->irq,
-		 etraxfs_uart_ports[port->line]);
-
-	etraxfs_uart_set_mctrl(&up->port, up->port.mctrl);
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-
-}
-
-static void
-etraxfs_uart_set_termios(struct uart_port *port, struct ktermios *termios,
-			 struct ktermios *old)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-	unsigned long flags;
-	reg_ser_rw_xoff xoff;
-	reg_ser_rw_xoff_clr xoff_clr = {0};
-	reg_ser_rw_tr_ctrl tx_ctrl = {0};
-	reg_ser_rw_tr_dma_en tx_dma_en = {0};
-	reg_ser_rw_rec_ctrl rx_ctrl = {0};
-	reg_ser_rw_tr_baud_div tx_baud_div = {0};
-	reg_ser_rw_rec_baud_div rx_baud_div = {0};
-	int baud;
-
-	if (old &&
-	    termios->c_cflag == old->c_cflag &&
-	    termios->c_iflag == old->c_iflag)
-		return;
-
-	/* Tx: 8 bit, no/even parity, 1 stop bit, no cts. */
-	tx_ctrl.base_freq = regk_ser_f29_493;
-	tx_ctrl.en = 0;
-	tx_ctrl.stop = 0;
-	tx_ctrl.auto_rts = regk_ser_no;
-	tx_ctrl.txd = 1;
-	tx_ctrl.auto_cts = 0;
-	/* Rx: 8 bit, no/even parity. */
-	rx_ctrl.dma_err = regk_ser_stop;
-	rx_ctrl.sampling = regk_ser_majority;
-	rx_ctrl.timeout = 1;
-
-	rx_ctrl.rts_n = regk_ser_inactive;
-
-	/* Common for tx and rx: 8N1. */
-	tx_ctrl.data_bits = regk_ser_bits8;
-	rx_ctrl.data_bits = regk_ser_bits8;
-	tx_ctrl.par = regk_ser_even;
-	rx_ctrl.par = regk_ser_even;
-	tx_ctrl.par_en = regk_ser_no;
-	rx_ctrl.par_en = regk_ser_no;
-
-	tx_ctrl.stop_bits = regk_ser_bits1;
-
-	/*
-	 * Change baud-rate and write it to the hardware.
-	 *
-	 * baud_clock = base_freq / (divisor*8)
-	 * divisor = base_freq / (baud_clock * 8)
-	 * base_freq is either:
-	 * off, ext, 29.493MHz, 32.000 MHz, 32.768 MHz or 100 MHz
-	 * 20.493MHz is used for standard baudrates
-	 */
-
-	/*
-	 * For the console port we keep the original baudrate here.  Not very
-	 * beautiful.
-	 */
-	if ((port != console_port) || old)
-		baud = uart_get_baud_rate(port, termios, old, 0,
-					  port->uartclk / 8);
-	else
-		baud = console_baud;
-
-	tx_baud_div.div = 29493000 / (8 * baud);
-	/* Rx uses same as tx. */
-	rx_baud_div.div = tx_baud_div.div;
-	rx_ctrl.base_freq = tx_ctrl.base_freq;
-
-	if ((termios->c_cflag & CSIZE) == CS7) {
-		/* Set 7 bit mode. */
-		tx_ctrl.data_bits = regk_ser_bits7;
-		rx_ctrl.data_bits = regk_ser_bits7;
-	}
-
-	if (termios->c_cflag & CSTOPB) {
-		/* Set 2 stop bit mode. */
-		tx_ctrl.stop_bits = regk_ser_bits2;
-	}
-
-	if (termios->c_cflag & PARENB) {
-		/* Enable parity. */
-		tx_ctrl.par_en = regk_ser_yes;
-		rx_ctrl.par_en = regk_ser_yes;
-	}
-
-	if (termios->c_cflag & CMSPAR) {
-		if (termios->c_cflag & PARODD) {
-			/* Set mark parity if PARODD and CMSPAR. */
-			tx_ctrl.par = regk_ser_mark;
-			rx_ctrl.par = regk_ser_mark;
-		} else {
-			tx_ctrl.par = regk_ser_space;
-			rx_ctrl.par = regk_ser_space;
-		}
-	} else {
-		if (termios->c_cflag & PARODD) {
-			/* Set odd parity. */
-		       tx_ctrl.par = regk_ser_odd;
-		       rx_ctrl.par = regk_ser_odd;
-		}
-	}
-
-	if (termios->c_cflag & CRTSCTS) {
-		/* Enable automatic CTS handling. */
-		tx_ctrl.auto_cts = regk_ser_yes;
-	}
-
-	/* Make sure the tx and rx are enabled. */
-	tx_ctrl.en = regk_ser_yes;
-	rx_ctrl.en = regk_ser_yes;
-
-	spin_lock_irqsave(&port->lock, flags);
-
-	tx_dma_en.en = 0;
-	REG_WR(ser, up->regi_ser, rw_tr_dma_en, tx_dma_en);
-
-	/* Actually write the control regs (if modified) to the hardware. */
-	uart_update_timeout(port, termios->c_cflag, port->uartclk/8);
-	MODIFY_REG(up->regi_ser, rw_rec_baud_div, rx_baud_div);
-	MODIFY_REG(up->regi_ser, rw_rec_ctrl, rx_ctrl);
-
-	MODIFY_REG(up->regi_ser, rw_tr_baud_div, tx_baud_div);
-	MODIFY_REG(up->regi_ser, rw_tr_ctrl, tx_ctrl);
-
-	tx_dma_en.en = 0;
-	REG_WR(ser, up->regi_ser, rw_tr_dma_en, tx_dma_en);
-
-	xoff = REG_RD(ser, up->regi_ser, rw_xoff);
-
-	if (up->port.state && up->port.state->port.tty &&
-	    (up->port.state->port.tty->termios.c_iflag & IXON)) {
-		xoff.chr = STOP_CHAR(up->port.state->port.tty);
-		xoff.automatic = regk_ser_yes;
-	} else
-		xoff.automatic = regk_ser_no;
-
-	MODIFY_REG(up->regi_ser, rw_xoff, xoff);
-
-	/*
-	 * Make sure we don't start in an automatically shut-off state due to
-	 * a previous early exit.
-	 */
-	xoff_clr.clr = 1;
-	REG_WR(ser, up->regi_ser, rw_xoff_clr, xoff_clr);
-
-	etraxfs_uart_set_mctrl(&up->port, up->port.mctrl);
-	spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static const char *
-etraxfs_uart_type(struct uart_port *port)
-{
-	return "CRISv32";
-}
-
-static void etraxfs_uart_release_port(struct uart_port *port)
-{
-}
-
-static int etraxfs_uart_request_port(struct uart_port *port)
-{
-	return 0;
-}
-
-static void etraxfs_uart_config_port(struct uart_port *port, int flags)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-
-	up->port.type = PORT_CRIS;
-}
-
-static const struct uart_ops etraxfs_uart_pops = {
-	.tx_empty = etraxfs_uart_tx_empty,
-	.set_mctrl = etraxfs_uart_set_mctrl,
-	.get_mctrl = etraxfs_uart_get_mctrl,
-	.stop_tx = etraxfs_uart_stop_tx,
-	.start_tx = etraxfs_uart_start_tx,
-	.send_xchar = etraxfs_uart_send_xchar,
-	.stop_rx = etraxfs_uart_stop_rx,
-	.break_ctl = etraxfs_uart_break_ctl,
-	.startup = etraxfs_uart_startup,
-	.shutdown = etraxfs_uart_shutdown,
-	.set_termios = etraxfs_uart_set_termios,
-	.type = etraxfs_uart_type,
-	.release_port = etraxfs_uart_release_port,
-	.request_port = etraxfs_uart_request_port,
-	.config_port = etraxfs_uart_config_port,
-#ifdef CONFIG_CONSOLE_POLL
-	.poll_get_char = etraxfs_uart_get_poll_char,
-	.poll_put_char = etraxfs_uart_put_poll_char,
-#endif
-};
-
-static void cris_serial_port_init(struct uart_port *port, int line)
-{
-	struct uart_cris_port *up = (struct uart_cris_port *)port;
-
-	if (up->initialized)
-		return;
-	up->initialized = 1;
-	port->line = line;
-	spin_lock_init(&port->lock);
-	port->ops = &etraxfs_uart_pops;
-	port->irq = up->irq;
-	port->iobase = (unsigned long) up->regi_ser;
-	port->uartclk = 29493000;
-
-	/*
-	 * We can't fit any more than 255 here (unsigned char), though
-	 * actually UART_XMIT_SIZE characters could be pending output.
-	 * At time of this writing, the definition of "fifosize" is here the
-	 * amount of characters that can be pending output after a start_tx call
-	 * until tx_empty returns 1: see serial_core.c:uart_wait_until_sent.
-	 * This matters for timeout calculations unfortunately, but keeping
-	 * larger amounts at the DMA wouldn't win much so let's just play nice.
-	 */
-	port->fifosize = 255;
-	port->flags = UPF_BOOT_AUTOCONF;
-}
-
-static int etraxfs_uart_probe(struct platform_device *pdev)
-{
-	struct device_node *np = pdev->dev.of_node;
-	struct uart_cris_port *up;
-	int dev_id;
-
-	if (!np)
-		return -ENODEV;
-
-	dev_id = of_alias_get_id(np, "serial");
-	if (dev_id < 0)
-		dev_id = 0;
-
-	if (dev_id >= UART_NR)
-		return -EINVAL;
-
-	if (etraxfs_uart_ports[dev_id])
-		return -EBUSY;
-
-	up = devm_kzalloc(&pdev->dev, sizeof(struct uart_cris_port),
-			  GFP_KERNEL);
-	if (!up)
-		return -ENOMEM;
-
-	up->irq = irq_of_parse_and_map(np, 0);
-	up->regi_ser = of_iomap(np, 0);
-	up->port.dev = &pdev->dev;
-
-	up->gpios = mctrl_gpio_init_noauto(&pdev->dev, 0);
-	if (IS_ERR(up->gpios))
-		return PTR_ERR(up->gpios);
-
-	cris_serial_port_init(&up->port, dev_id);
-
-	etraxfs_uart_ports[dev_id] = up;
-	platform_set_drvdata(pdev, &up->port);
-	uart_add_one_port(&etraxfs_uart_driver, &up->port);
-
-	return 0;
-}
-
-static int etraxfs_uart_remove(struct platform_device *pdev)
-{
-	struct uart_port *port;
-
-	port = platform_get_drvdata(pdev);
-	uart_remove_one_port(&etraxfs_uart_driver, port);
-	etraxfs_uart_ports[port->line] = NULL;
-
-	return 0;
-}
-
-static const struct of_device_id etraxfs_uart_dt_ids[] = {
-	{ .compatible = "axis,etraxfs-uart" },
-	{ /* sentinel */ }
-};
-
-MODULE_DEVICE_TABLE(of, etraxfs_uart_dt_ids);
-
-static struct platform_driver etraxfs_uart_platform_driver = {
-	.driver = {
-		.name   = DRV_NAME,
-		.of_match_table	= of_match_ptr(etraxfs_uart_dt_ids),
-	},
-	.probe          = etraxfs_uart_probe,
-	.remove         = etraxfs_uart_remove,
-};
-
-static int __init etraxfs_uart_init(void)
-{
-	int ret;
-
-	ret = uart_register_driver(&etraxfs_uart_driver);
-	if (ret)
-		return ret;
-
-	ret = platform_driver_register(&etraxfs_uart_platform_driver);
-	if (ret)
-		uart_unregister_driver(&etraxfs_uart_driver);
-
-	return ret;
-}
-
-static void __exit etraxfs_uart_exit(void)
-{
-	platform_driver_unregister(&etraxfs_uart_platform_driver);
-	uart_unregister_driver(&etraxfs_uart_driver);
-}
-
-module_init(etraxfs_uart_init);
-module_exit(etraxfs_uart_exit);
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
deleted file mode 100644
index 7b83a8aab495..000000000000
--- a/drivers/tty/serial/m32r_sio.c
+++ /dev/null
@@ -1,1053 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- *  m32r_sio.c
- *
- *  Driver for M32R serial ports
- *
- *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
- *  Based on drivers/serial/8250.c.
- *
- *  Copyright (C) 2001  Russell King.
- *  Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
- */
-
-/*
- * A note about mapbase / membase
- *
- *  mapbase is the physical address of the IO port.  Currently, we don't
- *  support this very well, and it may well be dropped from this driver
- *  in future.  As such, mapbase should be NULL.
- *
- *  membase is an 'ioremapped' cookie.  This is compatible with the old
- *  serial.c driver, and is currently the preferred form.
- */
-
-#if defined(CONFIG_SERIAL_M32R_SIO_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/serial.h>
-#include <linux/delay.h>
-
-#include <asm/m32r.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-
-#define BAUD_RATE	115200
-
-#include <linux/serial_core.h>
-#include "m32r_sio_reg.h"
-
-#define PASS_LIMIT	256
-
-static const struct {
-	unsigned int port;
-	unsigned int irq;
-} old_serial_port[] = {
-#if defined(CONFIG_PLAT_USRV)
-	/* PORT  IRQ            FLAGS */
-	{ 0x3F8, PLD_IRQ_UART0 }, /* ttyS0 */
-	{ 0x2F8, PLD_IRQ_UART1 }, /* ttyS1 */
-#elif defined(CONFIG_SERIAL_M32R_PLDSIO)
-	{ ((unsigned long)PLD_ESIO0CR), PLD_IRQ_SIO0_RCV }, /* ttyS0 */
-#else
-	{ M32R_SIO_OFFSET, M32R_IRQ_SIO0_R }, /* ttyS0 */
-#endif
-};
-
-#define UART_NR	ARRAY_SIZE(old_serial_port)
-
-struct uart_sio_port {
-	struct uart_port	port;
-	struct timer_list	timer;		/* "no irq" timer */
-	struct list_head	list;		/* ports on this IRQ */
-	unsigned char		ier;
-};
-
-struct irq_info {
-	spinlock_t		lock;
-	struct list_head	*head;
-};
-
-static struct irq_info irq_lists[NR_IRQS];
-
-#ifdef CONFIG_SERIAL_M32R_PLDSIO
-
-#define __sio_in(x) inw((unsigned long)(x))
-#define __sio_out(v,x) outw((v),(unsigned long)(x))
-
-static inline void sio_set_baud_rate(unsigned long baud)
-{
-	unsigned short sbaud;
-	sbaud = (boot_cpu_data.bus_clock / (baud * 4))-1;
-	__sio_out(sbaud, PLD_ESIO0BAUR);
-}
-
-static void sio_reset(void)
-{
-	unsigned short tmp;
-
-	tmp = __sio_in(PLD_ESIO0RXB);
-	tmp = __sio_in(PLD_ESIO0RXB);
-	tmp = __sio_in(PLD_ESIO0CR);
-	sio_set_baud_rate(BAUD_RATE);
-	__sio_out(0x0300, PLD_ESIO0CR);
-	__sio_out(0x0003, PLD_ESIO0CR);
-}
-
-static void sio_init(void)
-{
-	unsigned short tmp;
-
-	tmp = __sio_in(PLD_ESIO0RXB);
-	tmp = __sio_in(PLD_ESIO0RXB);
-	tmp = __sio_in(PLD_ESIO0CR);
-	__sio_out(0x0300, PLD_ESIO0CR);
-	__sio_out(0x0003, PLD_ESIO0CR);
-}
-
-static void sio_error(int *status)
-{
-	printk("SIO0 error[%04x]\n", *status);
-	do {
-		sio_init();
-	} while ((*status = __sio_in(PLD_ESIO0CR)) != 3);
-}
-
-#else /* not CONFIG_SERIAL_M32R_PLDSIO */
-
-#define __sio_in(x) inl(x)
-#define __sio_out(v,x) outl((v),(x))
-
-static inline void sio_set_baud_rate(unsigned long baud)
-{
-	unsigned long i, j;
-
-	i = boot_cpu_data.bus_clock / (baud * 16);
-	j = (boot_cpu_data.bus_clock - (i * baud * 16)) / baud;
-	i -= 1;
-	j = (j + 1) >> 1;
-
-	__sio_out(i, M32R_SIO0_BAUR_PORTL);
-	__sio_out(j, M32R_SIO0_RBAUR_PORTL);
-}
-
-static void sio_reset(void)
-{
-	__sio_out(0x00000300, M32R_SIO0_CR_PORTL);	/* init status */
-	__sio_out(0x00000800, M32R_SIO0_MOD1_PORTL);	/* 8bit        */
-	__sio_out(0x00000080, M32R_SIO0_MOD0_PORTL);	/* 1stop non   */
-	sio_set_baud_rate(BAUD_RATE);
-	__sio_out(0x00000000, M32R_SIO0_TRCR_PORTL);
-	__sio_out(0x00000003, M32R_SIO0_CR_PORTL);	/* RXCEN */
-}
-
-static void sio_init(void)
-{
-	unsigned int tmp;
-
-	tmp = __sio_in(M32R_SIO0_RXB_PORTL);
-	tmp = __sio_in(M32R_SIO0_RXB_PORTL);
-	tmp = __sio_in(M32R_SIO0_STS_PORTL);
-	__sio_out(0x00000003, M32R_SIO0_CR_PORTL);
-}
-
-static void sio_error(int *status)
-{
-	printk("SIO0 error[%04x]\n", *status);
-	do {
-		sio_init();
-	} while ((*status = __sio_in(M32R_SIO0_CR_PORTL)) != 3);
-}
-
-#endif /* CONFIG_SERIAL_M32R_PLDSIO */
-
-static unsigned int sio_in(struct uart_sio_port *up, int offset)
-{
-	return __sio_in(up->port.iobase + offset);
-}
-
-static void sio_out(struct uart_sio_port *up, int offset, int value)
-{
-	__sio_out(value, up->port.iobase + offset);
-}
-
-static unsigned int serial_in(struct uart_sio_port *up, int offset)
-{
-	if (!offset)
-		return 0;
-
-	return __sio_in(offset);
-}
-
-static void serial_out(struct uart_sio_port *up, int offset, int value)
-{
-	if (!offset)
-		return;
-
-	__sio_out(value, offset);
-}
-
-static void m32r_sio_stop_tx(struct uart_port *port)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-
-	if (up->ier & UART_IER_THRI) {
-		up->ier &= ~UART_IER_THRI;
-		serial_out(up, UART_IER, up->ier);
-	}
-}
-
-static void m32r_sio_start_tx(struct uart_port *port)
-{
-#ifdef CONFIG_SERIAL_M32R_PLDSIO
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-	struct circ_buf *xmit = &up->port.state->xmit;
-
-	if (!(up->ier & UART_IER_THRI)) {
-		up->ier |= UART_IER_THRI;
-		serial_out(up, UART_IER, up->ier);
-		if (!uart_circ_empty(xmit)) {
-			serial_out(up, UART_TX, xmit->buf[xmit->tail]);
-			xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-			up->port.icount.tx++;
-		}
-	}
-	while((serial_in(up, UART_LSR) & UART_EMPTY) != UART_EMPTY);
-#else
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-
-	if (!(up->ier & UART_IER_THRI)) {
-		up->ier |= UART_IER_THRI;
-		serial_out(up, UART_IER, up->ier);
-	}
-#endif
-}
-
-static void m32r_sio_stop_rx(struct uart_port *port)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-
-	up->ier &= ~UART_IER_RLSI;
-	up->port.read_status_mask &= ~UART_LSR_DR;
-	serial_out(up, UART_IER, up->ier);
-}
-
-static void m32r_sio_enable_ms(struct uart_port *port)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-
-	up->ier |= UART_IER_MSI;
-	serial_out(up, UART_IER, up->ier);
-}
-
-static void receive_chars(struct uart_sio_port *up, int *status)
-{
-	struct tty_port *port = &up->port.state->port;
-	unsigned char ch;
-	unsigned char flag;
-	int max_count = 256;
-
-	do {
-		ch = sio_in(up, SIORXB);
-		flag = TTY_NORMAL;
-		up->port.icount.rx++;
-
-		if (unlikely(*status & (UART_LSR_BI | UART_LSR_PE |
-				       UART_LSR_FE | UART_LSR_OE))) {
-			/*
-			 * For statistics only
-			 */
-			if (*status & UART_LSR_BI) {
-				*status &= ~(UART_LSR_FE | UART_LSR_PE);
-				up->port.icount.brk++;
-				/*
-				 * We do the SysRQ and SAK checking
-				 * here because otherwise the break
-				 * may get masked by ignore_status_mask
-				 * or read_status_mask.
-				 */
-				if (uart_handle_break(&up->port))
-					goto ignore_char;
-			} else if (*status & UART_LSR_PE)
-				up->port.icount.parity++;
-			else if (*status & UART_LSR_FE)
-				up->port.icount.frame++;
-			if (*status & UART_LSR_OE)
-				up->port.icount.overrun++;
-
-			/*
-			 * Mask off conditions which should be ingored.
-			 */
-			*status &= up->port.read_status_mask;
-
-			if (*status & UART_LSR_BI) {
-				pr_debug("handling break....\n");
-				flag = TTY_BREAK;
-			} else if (*status & UART_LSR_PE)
-				flag = TTY_PARITY;
-			else if (*status & UART_LSR_FE)
-				flag = TTY_FRAME;
-		}
-		if (uart_handle_sysrq_char(&up->port, ch))
-			goto ignore_char;
-		if ((*status & up->port.ignore_status_mask) == 0)
-			tty_insert_flip_char(port, ch, flag);
-
-		if (*status & UART_LSR_OE) {
-			/*
-			 * Overrun is special, since it's reported
-			 * immediately, and doesn't affect the current
-			 * character.
-			 */
-			tty_insert_flip_char(port, 0, TTY_OVERRUN);
-		}
-	ignore_char:
-		*status = serial_in(up, UART_LSR);
-	} while ((*status & UART_LSR_DR) && (max_count-- > 0));
-
-	spin_unlock(&up->port.lock);
-	tty_flip_buffer_push(port);
-	spin_lock(&up->port.lock);
-}
-
-static void transmit_chars(struct uart_sio_port *up)
-{
-	struct circ_buf *xmit = &up->port.state->xmit;
-	int count;
-
-	if (up->port.x_char) {
-#ifndef CONFIG_SERIAL_M32R_PLDSIO	/* XXX */
-		serial_out(up, UART_TX, up->port.x_char);
-#endif
-		up->port.icount.tx++;
-		up->port.x_char = 0;
-		return;
-	}
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
-		m32r_sio_stop_tx(&up->port);
-		return;
-	}
-
-	count = up->port.fifosize;
-	do {
-		serial_out(up, UART_TX, xmit->buf[xmit->tail]);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		up->port.icount.tx++;
-		if (uart_circ_empty(xmit))
-			break;
-		while (!(serial_in(up, UART_LSR) & UART_LSR_THRE));
-
-	} while (--count > 0);
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(&up->port);
-
-	pr_debug("THRE...\n");
-
-	if (uart_circ_empty(xmit))
-		m32r_sio_stop_tx(&up->port);
-}
-
-/*
- * This handles the interrupt from one port.
- */
-static inline void m32r_sio_handle_port(struct uart_sio_port *up,
-	unsigned int status)
-{
-	pr_debug("status = %x...\n", status);
-
-	if (status & 0x04)
-		receive_chars(up, &status);
-	if (status & 0x01)
-		transmit_chars(up);
-}
-
-/*
- * This is the serial driver's interrupt routine.
- *
- * Arjan thinks the old way was overly complex, so it got simplified.
- * Alan disagrees, saying that need the complexity to handle the weird
- * nature of ISA shared interrupts.  (This is a special exception.)
- *
- * In order to handle ISA shared interrupts properly, we need to check
- * that all ports have been serviced, and therefore the ISA interrupt
- * line has been de-asserted.
- *
- * This means we need to loop through all ports. checking that they
- * don't have an interrupt pending.
- */
-static irqreturn_t m32r_sio_interrupt(int irq, void *dev_id)
-{
-	struct irq_info *i = dev_id;
-	struct list_head *l, *end = NULL;
-	int pass_counter = 0;
-
-	pr_debug("m32r_sio_interrupt(%d)...\n", irq);
-
-#ifdef CONFIG_SERIAL_M32R_PLDSIO
-//	if (irq == PLD_IRQ_SIO0_SND)
-//		irq = PLD_IRQ_SIO0_RCV;
-#else
-	if (irq == M32R_IRQ_SIO0_S)
-		irq = M32R_IRQ_SIO0_R;
-#endif
-
-	spin_lock(&i->lock);
-
-	l = i->head;
-	do {
-		struct uart_sio_port *up;
-		unsigned int sts;
-
-		up = list_entry(l, struct uart_sio_port, list);
-
-		sts = sio_in(up, SIOSTS);
-		if (sts & 0x5) {
-			spin_lock(&up->port.lock);
-			m32r_sio_handle_port(up, sts);
-			spin_unlock(&up->port.lock);
-
-			end = NULL;
-		} else if (end == NULL)
-			end = l;
-
-		l = l->next;
-
-		if (l == i->head && pass_counter++ > PASS_LIMIT) {
-			if (sts & 0xe0)
-				sio_error(&sts);
-			break;
-		}
-	} while (l != end);
-
-	spin_unlock(&i->lock);
-
-	pr_debug("end.\n");
-
-	return IRQ_HANDLED;
-}
-
-/*
- * To support ISA shared interrupts, we need to have one interrupt
- * handler that ensures that the IRQ line has been deasserted
- * before returning.  Failing to do this will result in the IRQ
- * line being stuck active, and, since ISA irqs are edge triggered,
- * no more IRQs will be seen.
- */
-static void serial_do_unlink(struct irq_info *i, struct uart_sio_port *up)
-{
-	spin_lock_irq(&i->lock);
-
-	if (!list_empty(i->head)) {
-		if (i->head == &up->list)
-			i->head = i->head->next;
-		list_del(&up->list);
-	} else {
-		BUG_ON(i->head != &up->list);
-		i->head = NULL;
-	}
-
-	spin_unlock_irq(&i->lock);
-}
-
-static int serial_link_irq_chain(struct uart_sio_port *up)
-{
-	struct irq_info *i = irq_lists + up->port.irq;
-	int ret, irq_flags = 0;
-
-	spin_lock_irq(&i->lock);
-
-	if (i->head) {
-		list_add(&up->list, i->head);
-		spin_unlock_irq(&i->lock);
-
-		ret = 0;
-	} else {
-		INIT_LIST_HEAD(&up->list);
-		i->head = &up->list;
-		spin_unlock_irq(&i->lock);
-
-		ret = request_irq(up->port.irq, m32r_sio_interrupt,
-				  irq_flags, "SIO0-RX", i);
-		ret |= request_irq(up->port.irq + 1, m32r_sio_interrupt,
-				  irq_flags, "SIO0-TX", i);
-		if (ret < 0)
-			serial_do_unlink(i, up);
-	}
-
-	return ret;
-}
-
-static void serial_unlink_irq_chain(struct uart_sio_port *up)
-{
-	struct irq_info *i = irq_lists + up->port.irq;
-
-	BUG_ON(i->head == NULL);
-
-	if (list_empty(i->head)) {
-		free_irq(up->port.irq, i);
-		free_irq(up->port.irq + 1, i);
-	}
-
-	serial_do_unlink(i, up);
-}
-
-/*
- * This function is used to handle ports that do not have an interrupt.
- */
-static void m32r_sio_timeout(struct timer_list *t)
-{
-	struct uart_sio_port *up = from_timer(up, t, timer);
-	unsigned int timeout;
-	unsigned int sts;
-
-	sts = sio_in(up, SIOSTS);
-	if (sts & 0x5) {
-		spin_lock(&up->port.lock);
-		m32r_sio_handle_port(up, sts);
-		spin_unlock(&up->port.lock);
-	}
-
-	timeout = up->port.timeout;
-	timeout = timeout > 6 ? (timeout / 2 - 2) : 1;
-	mod_timer(&up->timer, jiffies + timeout);
-}
-
-static unsigned int m32r_sio_tx_empty(struct uart_port *port)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-	unsigned long flags;
-	unsigned int ret;
-
-	spin_lock_irqsave(&up->port.lock, flags);
-	ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0;
-	spin_unlock_irqrestore(&up->port.lock, flags);
-
-	return ret;
-}
-
-static unsigned int m32r_sio_get_mctrl(struct uart_port *port)
-{
-	return 0;
-}
-
-static void m32r_sio_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-
-}
-
-static void m32r_sio_break_ctl(struct uart_port *port, int break_state)
-{
-
-}
-
-static int m32r_sio_startup(struct uart_port *port)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-	int retval;
-
-	sio_init();
-
-	/*
-	 * If the "interrupt" for this port doesn't correspond with any
-	 * hardware interrupt, we use a timer-based system.  The original
-	 * driver used to do this with IRQ0.
-	 */
-	if (!up->port.irq) {
-		unsigned int timeout = up->port.timeout;
-
-		timeout = timeout > 6 ? (timeout / 2 - 2) : 1;
-
-		mod_timer(&up->timer, jiffies + timeout);
-	} else {
-		retval = serial_link_irq_chain(up);
-		if (retval)
-			return retval;
-	}
-
-	/*
-	 * Finally, enable interrupts.  Note: Modem status interrupts
-	 * are set via set_termios(), which will be occurring imminently
-	 * anyway, so we don't enable them here.
-	 * - M32R_SIO: 0x0c
-	 * - M32R_PLDSIO: 0x04
-	 */
-	up->ier = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
-	sio_out(up, SIOTRCR, up->ier);
-
-	/*
-	 * And clear the interrupt registers again for luck.
-	 */
-	sio_reset();
-
-	return 0;
-}
-
-static void m32r_sio_shutdown(struct uart_port *port)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-
-	/*
-	 * Disable interrupts from this port
-	 */
-	up->ier = 0;
-	sio_out(up, SIOTRCR, 0);
-
-	/*
-	 * Disable break condition and FIFOs
-	 */
-
-	sio_init();
-
-	if (!up->port.irq)
-		del_timer_sync(&up->timer);
-	else
-		serial_unlink_irq_chain(up);
-}
-
-static unsigned int m32r_sio_get_divisor(struct uart_port *port,
-	unsigned int baud)
-{
-	return uart_get_divisor(port, baud);
-}
-
-static void m32r_sio_set_termios(struct uart_port *port,
-	struct ktermios *termios, struct ktermios *old)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-	unsigned char cval = 0;
-	unsigned long flags;
-	unsigned int baud, quot;
-
-	switch (termios->c_cflag & CSIZE) {
-	case CS5:
-		cval = UART_LCR_WLEN5;
-		break;
-	case CS6:
-		cval = UART_LCR_WLEN6;
-		break;
-	case CS7:
-		cval = UART_LCR_WLEN7;
-		break;
-	default:
-	case CS8:
-		cval = UART_LCR_WLEN8;
-		break;
-	}
-
-	if (termios->c_cflag & CSTOPB)
-		cval |= UART_LCR_STOP;
-	if (termios->c_cflag & PARENB)
-		cval |= UART_LCR_PARITY;
-	if (!(termios->c_cflag & PARODD))
-		cval |= UART_LCR_EPAR;
-#ifdef CMSPAR
-	if (termios->c_cflag & CMSPAR)
-		cval |= UART_LCR_SPAR;
-#endif
-
-	/*
-	 * Ask the core to calculate the divisor for us.
-	 */
-#ifdef CONFIG_SERIAL_M32R_PLDSIO
-	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/4);
-#else
-	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
-#endif
-	quot = m32r_sio_get_divisor(port, baud);
-
-	/*
-	 * Ok, we're now changing the port state.  Do it with
-	 * interrupts disabled.
-	 */
-	spin_lock_irqsave(&up->port.lock, flags);
-
-	sio_set_baud_rate(baud);
-
-	/*
-	 * Update the per-port timeout.
-	 */
-	uart_update_timeout(port, termios->c_cflag, baud);
-
-	up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
-	if (termios->c_iflag & INPCK)
-		up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE;
-	if (termios->c_iflag & (IGNBRK | BRKINT | PARMRK))
-		up->port.read_status_mask |= UART_LSR_BI;
-
-	/*
-	 * Characteres to ignore
-	 */
-	up->port.ignore_status_mask = 0;
-	if (termios->c_iflag & IGNPAR)
-		up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
-	if (termios->c_iflag & IGNBRK) {
-		up->port.ignore_status_mask |= UART_LSR_BI;
-		/*
-		 * If we're ignoring parity and break indicators,
-		 * ignore overruns too (for real raw support).
-		 */
-		if (termios->c_iflag & IGNPAR)
-			up->port.ignore_status_mask |= UART_LSR_OE;
-	}
-
-	/*
-	 * ignore all characters if CREAD is not set
-	 */
-	if ((termios->c_cflag & CREAD) == 0)
-		up->port.ignore_status_mask |= UART_LSR_DR;
-
-	/*
-	 * CTS flow control flag and modem status interrupts
-	 */
-	up->ier &= ~UART_IER_MSI;
-	if (UART_ENABLE_MS(&up->port, termios->c_cflag))
-		up->ier |= UART_IER_MSI;
-
-	serial_out(up, UART_IER, up->ier);
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-/*
- * Resource handling.  This is complicated by the fact that resources
- * depend on the port type.  Maybe we should be claiming the standard
- * 8250 ports, and then trying to get other resources as necessary?
- */
-static int
-m32r_sio_request_std_resource(struct uart_sio_port *up, struct resource **res)
-{
-	unsigned int size = 8 << up->port.regshift;
-#ifndef CONFIG_SERIAL_M32R_PLDSIO
-	unsigned long start;
-#endif
-	int ret = 0;
-
-	switch (up->port.iotype) {
-	case UPIO_MEM:
-		if (up->port.mapbase) {
-#ifdef CONFIG_SERIAL_M32R_PLDSIO
-			*res = request_mem_region(up->port.mapbase, size, "serial");
-#else
-			start = up->port.mapbase;
-			*res = request_mem_region(start, size, "serial");
-#endif
-			if (!*res)
-				ret = -EBUSY;
-		}
-		break;
-
-	case UPIO_PORT:
-		*res = request_region(up->port.iobase, size, "serial");
-		if (!*res)
-			ret = -EBUSY;
-		break;
-	}
-	return ret;
-}
-
-static void m32r_sio_release_port(struct uart_port *port)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-	unsigned long start, offset = 0, size = 0;
-
-	size <<= up->port.regshift;
-
-	switch (up->port.iotype) {
-	case UPIO_MEM:
-		if (up->port.mapbase) {
-			/*
-			 * Unmap the area.
-			 */
-			iounmap(up->port.membase);
-			up->port.membase = NULL;
-
-			start = up->port.mapbase;
-
-			if (size)
-				release_mem_region(start + offset, size);
-			release_mem_region(start, 8 << up->port.regshift);
-		}
-		break;
-
-	case UPIO_PORT:
-		start = up->port.iobase;
-
-		if (size)
-			release_region(start + offset, size);
-		release_region(start + offset, 8 << up->port.regshift);
-		break;
-
-	default:
-		break;
-	}
-}
-
-static int m32r_sio_request_port(struct uart_port *port)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-	struct resource *res = NULL;
-	int ret = 0;
-
-	ret = m32r_sio_request_std_resource(up, &res);
-
-	/*
-	 * If we have a mapbase, then request that as well.
-	 */
-	if (ret == 0 && up->port.flags & UPF_IOREMAP) {
-		int size = resource_size(res);
-
-		up->port.membase = ioremap(up->port.mapbase, size);
-		if (!up->port.membase)
-			ret = -ENOMEM;
-	}
-
-	if (ret < 0) {
-		if (res)
-			release_resource(res);
-	}
-
-	return ret;
-}
-
-static void m32r_sio_config_port(struct uart_port *port, int unused)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-	unsigned long flags;
-
-	spin_lock_irqsave(&up->port.lock, flags);
-
-	up->port.fifosize = 1;
-
-	spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static int
-m32r_sio_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
-	if (ser->irq >= nr_irqs || ser->irq < 0 || ser->baud_base < 9600)
-		return -EINVAL;
-	return 0;
-}
-
-static const struct uart_ops m32r_sio_pops = {
-	.tx_empty	= m32r_sio_tx_empty,
-	.set_mctrl	= m32r_sio_set_mctrl,
-	.get_mctrl	= m32r_sio_get_mctrl,
-	.stop_tx	= m32r_sio_stop_tx,
-	.start_tx	= m32r_sio_start_tx,
-	.stop_rx	= m32r_sio_stop_rx,
-	.enable_ms	= m32r_sio_enable_ms,
-	.break_ctl	= m32r_sio_break_ctl,
-	.startup	= m32r_sio_startup,
-	.shutdown	= m32r_sio_shutdown,
-	.set_termios	= m32r_sio_set_termios,
-	.release_port	= m32r_sio_release_port,
-	.request_port	= m32r_sio_request_port,
-	.config_port	= m32r_sio_config_port,
-	.verify_port	= m32r_sio_verify_port,
-};
-
-static struct uart_sio_port m32r_sio_ports[UART_NR];
-
-static void __init m32r_sio_init_ports(void)
-{
-	struct uart_sio_port *up;
-	static int first = 1;
-	int i;
-
-	if (!first)
-		return;
-	first = 0;
-
-	for (i = 0, up = m32r_sio_ports; i < UART_NR; i++, up++) {
-		up->port.iobase   = old_serial_port[i].port;
-		up->port.irq      = irq_canonicalize(old_serial_port[i].irq);
-		up->port.uartclk  = BAUD_RATE * 16;
-		up->port.flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
-		up->port.membase  = 0;
-		up->port.iotype   = 0;
-		up->port.regshift = 0;
-		up->port.ops      = &m32r_sio_pops;
-	}
-}
-
-static void __init m32r_sio_register_ports(struct uart_driver *drv)
-{
-	int i;
-
-	m32r_sio_init_ports();
-
-	for (i = 0; i < UART_NR; i++) {
-		struct uart_sio_port *up = &m32r_sio_ports[i];
-
-		up->port.line = i;
-		up->port.ops = &m32r_sio_pops;
-		timer_setup(&up->timer, m32r_sio_timeout, 0);
-
-		uart_add_one_port(drv, &up->port);
-	}
-}
-
-#ifdef CONFIG_SERIAL_M32R_SIO_CONSOLE
-
-/*
- *	Wait for transmitter & holding register to empty
- */
-static void wait_for_xmitr(struct uart_sio_port *up)
-{
-	unsigned int status, tmout = 10000;
-
-	/* Wait up to 10ms for the character(s) to be sent. */
-	do {
-		status = sio_in(up, SIOSTS);
-
-		if (--tmout == 0)
-			break;
-		udelay(1);
-	} while ((status & UART_EMPTY) != UART_EMPTY);
-
-	/* Wait up to 1s for flow control if necessary */
-	if (up->port.flags & UPF_CONS_FLOW) {
-		tmout = 1000000;
-		while (--tmout)
-			udelay(1);
-	}
-}
-
-static void m32r_sio_console_putchar(struct uart_port *port, int ch)
-{
-	struct uart_sio_port *up =
-		container_of(port, struct uart_sio_port, port);
-
-	wait_for_xmitr(up);
-	sio_out(up, SIOTXB, ch);
-}
-
-/*
- *	Print a string to the serial port trying not to disturb
- *	any possible real use of the port...
- *
- *	The console_lock must be held when we get here.
- */
-static void m32r_sio_console_write(struct console *co, const char *s,
-	unsigned int count)
-{
-	struct uart_sio_port *up = &m32r_sio_ports[co->index];
-	unsigned int ier;
-
-	/*
-	 *	First save the UER then disable the interrupts
-	 */
-	ier = sio_in(up, SIOTRCR);
-	sio_out(up, SIOTRCR, 0);
-
-	uart_console_write(&up->port, s, count, m32r_sio_console_putchar);
-
-	/*
-	 *	Finally, wait for transmitter to become empty
-	 *	and restore the IER
-	 */
-	wait_for_xmitr(up);
-	sio_out(up, SIOTRCR, ier);
-}
-
-static int __init m32r_sio_console_setup(struct console *co, char *options)
-{
-	struct uart_port *port;
-	int baud = 9600;
-	int bits = 8;
-	int parity = 'n';
-	int flow = 'n';
-
-	/*
-	 * Check whether an invalid uart number has been specified, and
-	 * if so, search for the first available port that does have
-	 * console support.
-	 */
-	if (co->index >= UART_NR)
-		co->index = 0;
-	port = &m32r_sio_ports[co->index].port;
-
-	/*
-	 * Temporary fix.
-	 */
-	spin_lock_init(&port->lock);
-
-	if (options)
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-
-	return uart_set_options(port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver m32r_sio_reg;
-static struct console m32r_sio_console = {
-	.name		= "ttyS",
-	.write		= m32r_sio_console_write,
-	.device		= uart_console_device,
-	.setup		= m32r_sio_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-	.data		= &m32r_sio_reg,
-};
-
-static int __init m32r_sio_console_init(void)
-{
-	sio_reset();
-	sio_init();
-	m32r_sio_init_ports();
-	register_console(&m32r_sio_console);
-	return 0;
-}
-console_initcall(m32r_sio_console_init);
-
-#define M32R_SIO_CONSOLE	&m32r_sio_console
-#else
-#define M32R_SIO_CONSOLE	NULL
-#endif
-
-static struct uart_driver m32r_sio_reg = {
-	.owner			= THIS_MODULE,
-	.driver_name		= "sio",
-	.dev_name		= "ttyS",
-	.major			= TTY_MAJOR,
-	.minor			= 64,
-	.nr			= UART_NR,
-	.cons			= M32R_SIO_CONSOLE,
-};
-
-static int __init m32r_sio_init(void)
-{
-	int ret, i;
-
-	printk(KERN_INFO "Serial: M32R SIO driver\n");
-
-	for (i = 0; i < nr_irqs; i++)
-		spin_lock_init(&irq_lists[i].lock);
-
-	ret = uart_register_driver(&m32r_sio_reg);
-	if (ret >= 0)
-		m32r_sio_register_ports(&m32r_sio_reg);
-
-	return ret;
-}
-device_initcall(m32r_sio_init);
diff --git a/drivers/tty/serial/m32r_sio_reg.h b/drivers/tty/serial/m32r_sio_reg.h
deleted file mode 100644
index 6eed48828f94..000000000000
--- a/drivers/tty/serial/m32r_sio_reg.h
+++ /dev/null
@@ -1,150 +0,0 @@
-// SPDX-License-Identifier: GPL-1.0+
-/*
- * m32r_sio_reg.h
- *
- * Copyright (C) 1992, 1994 by Theodore Ts'o.
- * Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
- *
- * These are the UART port assignments, expressed as offsets from the base
- * register.  These assignments should hold for any serial port based on
- * a 8250, 16450, or 16550(A).
- */
-
-#ifndef _M32R_SIO_REG_H
-#define _M32R_SIO_REG_H
-
-
-#ifdef CONFIG_SERIAL_M32R_PLDSIO
-
-#define SIOCR		0x000
-#define SIOMOD0		0x002
-#define SIOMOD1		0x004
-#define SIOSTS		0x006
-#define SIOTRCR		0x008
-#define SIOBAUR		0x00a
-// #define SIORBAUR	0x018
-#define SIOTXB		0x00c
-#define SIORXB		0x00e
-
-#define UART_RX		((unsigned long) PLD_ESIO0RXB)
-				/* In:  Receive buffer (DLAB=0) */
-#define UART_TX		((unsigned long) PLD_ESIO0TXB)
-				/* Out: Transmit buffer (DLAB=0) */
-#define UART_DLL	0	/* Out: Divisor Latch Low (DLAB=1) */
-#define UART_TRG	0	/* (LCR=BF) FCTR bit 7 selects Rx or Tx
-				 * In: Fifo count
-				 * Out: Fifo custom trigger levels
-				 * XR16C85x only */
-
-#define UART_DLM	0	/* Out: Divisor Latch High (DLAB=1) */
-#define UART_IER	((unsigned long) PLD_ESIO0INTCR)
-				/* Out: Interrupt Enable Register */
-#define UART_FCTR	0	/* (LCR=BF) Feature Control Register
-				 * XR16C85x only */
-
-#define UART_IIR	0	/* In:  Interrupt ID Register */
-#define UART_FCR	0	/* Out: FIFO Control Register */
-#define UART_EFR	0	/* I/O: Extended Features Register */
-				/* (DLAB=1, 16C660 only) */
-
-#define UART_LCR	0	/* Out: Line Control Register */
-#define UART_MCR	0	/* Out: Modem Control Register */
-#define UART_LSR	((unsigned long) PLD_ESIO0STS)
-				/* In:  Line Status Register */
-#define UART_MSR	0	/* In:  Modem Status Register */
-#define UART_SCR	0	/* I/O: Scratch Register */
-#define UART_EMSR	0	/* (LCR=BF) Extended Mode Select Register
-				 * FCTR bit 6 selects SCR or EMSR
-				 * XR16c85x only */
-
-#else /* not CONFIG_SERIAL_M32R_PLDSIO */
-
-#define SIOCR		0x000
-#define SIOMOD0		0x004
-#define SIOMOD1		0x008
-#define SIOSTS		0x00c
-#define SIOTRCR		0x010
-#define SIOBAUR		0x014
-#define SIORBAUR	0x018
-#define SIOTXB		0x01c
-#define SIORXB		0x020
-
-#define UART_RX		M32R_SIO0_RXB_PORTL	/* In:  Receive buffer (DLAB=0) */
-#define UART_TX		M32R_SIO0_TXB_PORTL	/* Out: Transmit buffer (DLAB=0) */
-#define UART_DLL	0	/* Out: Divisor Latch Low (DLAB=1) */
-#define UART_TRG	0	/* (LCR=BF) FCTR bit 7 selects Rx or Tx
-				 * In: Fifo count
-				 * Out: Fifo custom trigger levels
-				 * XR16C85x only */
-
-#define UART_DLM	0	/* Out: Divisor Latch High (DLAB=1) */
-#define UART_IER	M32R_SIO0_TRCR_PORTL	/* Out: Interrupt Enable Register */
-#define UART_FCTR	0	/* (LCR=BF) Feature Control Register
-				 * XR16C85x only */
-
-#define UART_IIR	0	/* In:  Interrupt ID Register */
-#define UART_FCR	0	/* Out: FIFO Control Register */
-#define UART_EFR	0	/* I/O: Extended Features Register */
-				/* (DLAB=1, 16C660 only) */
-
-#define UART_LCR	0	/* Out: Line Control Register */
-#define UART_MCR	0	/* Out: Modem Control Register */
-#define UART_LSR	M32R_SIO0_STS_PORTL	/* In:  Line Status Register */
-#define UART_MSR	0	/* In:  Modem Status Register */
-#define UART_SCR	0	/* I/O: Scratch Register */
-#define UART_EMSR	0	/* (LCR=BF) Extended Mode Select Register
-				 * FCTR bit 6 selects SCR or EMSR
-				 * XR16c85x only */
-
-#endif /* CONFIG_SERIAL_M32R_PLDSIO */
-
-#define UART_EMPTY	(UART_LSR_TEMT | UART_LSR_THRE)
-
-/*
- * These are the definitions for the Line Control Register
- *
- * Note: if the word length is 5 bits (UART_LCR_WLEN5), then setting
- * UART_LCR_STOP will select 1.5 stop bits, not 2 stop bits.
- */
-#define UART_LCR_DLAB	0x80	/* Divisor latch access bit */
-#define UART_LCR_SBC	0x40	/* Set break control */
-#define UART_LCR_SPAR	0x20	/* Stick parity (?) */
-#define UART_LCR_EPAR	0x10	/* Even parity select */
-#define UART_LCR_PARITY	0x08	/* Parity Enable */
-#define UART_LCR_STOP	0x04	/* Stop bits: 0=1 stop bit, 1= 2 stop bits */
-#define UART_LCR_WLEN5  0x00	/* Wordlength: 5 bits */
-#define UART_LCR_WLEN6  0x01	/* Wordlength: 6 bits */
-#define UART_LCR_WLEN7  0x02	/* Wordlength: 7 bits */
-#define UART_LCR_WLEN8  0x03	/* Wordlength: 8 bits */
-
-/*
- * These are the definitions for the Line Status Register
- */
-#define UART_LSR_TEMT	0x02	/* Transmitter empty */
-#define UART_LSR_THRE	0x01	/* Transmit-hold-register empty */
-#define UART_LSR_BI	0x00	/* Break interrupt indicator */
-#define UART_LSR_FE	0x80	/* Frame error indicator */
-#define UART_LSR_PE	0x40	/* Parity error indicator */
-#define UART_LSR_OE	0x20	/* Overrun error indicator */
-#define UART_LSR_DR	0x04	/* Receiver data ready */
-
-/*
- * These are the definitions for the Interrupt Identification Register
- */
-#define UART_IIR_NO_INT	0x01	/* No interrupts pending */
-#define UART_IIR_ID	0x06	/* Mask for the interrupt ID */
-
-#define UART_IIR_MSI	0x00	/* Modem status interrupt */
-#define UART_IIR_THRI	0x02	/* Transmitter holding register empty */
-#define UART_IIR_RDI	0x04	/* Receiver data interrupt */
-#define UART_IIR_RLSI	0x06	/* Receiver line status interrupt */
-
-/*
- * These are the definitions for the Interrupt Enable Register
- */
-#define UART_IER_MSI	0x00	/* Enable Modem status interrupt */
-#define UART_IER_RLSI	0x08	/* Enable receiver line status interrupt */
-#define UART_IER_THRI	0x03	/* Enable Transmitter holding register int. */
-#define UART_IER_RDI	0x04	/* Enable receiver data interrupt */
-
-#endif /* _M32R_SIO_REG_H */
diff --git a/drivers/tty/serial/tilegx.c b/drivers/tty/serial/tilegx.c
deleted file mode 100644
index f0a3ae57f881..000000000000
--- a/drivers/tty/serial/tilegx.c
+++ /dev/null
@@ -1,689 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright 2013 Tilera Corporation. All Rights Reserved.
- *
- * TILEGx UART driver.
- */
-
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/module.h>
-#include <linux/serial_core.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-
-#include <gxio/common.h>
-#include <gxio/iorpc_globals.h>
-#include <gxio/iorpc_uart.h>
-#include <gxio/kiorpc.h>
-
-#include <hv/drv_uart_intf.h>
-
-/*
- * Use device name ttyS, major 4, minor 64-65.
- * This is the usual serial port name, 8250 conventional range.
- */
-#define TILEGX_UART_MAJOR	TTY_MAJOR
-#define TILEGX_UART_MINOR	64
-#define TILEGX_UART_NAME	"ttyS"
-#define DRIVER_NAME_STRING	"TILEGx_Serial"
-#define TILEGX_UART_REF_CLK	125000000; /* REF_CLK is always 125 MHz. */
-
-struct tile_uart_port {
-	/* UART port. */
-	struct uart_port	uart;
-
-	/* GXIO device context. */
-	gxio_uart_context_t	context;
-
-	/* UART access mutex. */
-	struct mutex		mutex;
-
-	/* CPU receiving interrupts. */
-	int			irq_cpu;
-};
-
-static struct tile_uart_port tile_uart_ports[TILEGX_UART_NR];
-static struct uart_driver tilegx_uart_driver;
-
-
-/*
- * Read UART rx fifo, and insert the chars into tty buffer.
- */
-static void receive_chars(struct tile_uart_port *tile_uart,
-			  struct tty_struct *tty)
-{
-	int i;
-	char c;
-	UART_FIFO_COUNT_t count;
-	gxio_uart_context_t *context = &tile_uart->context;
-	struct tty_port *port = tty->port;
-
-	count.word = gxio_uart_read(context, UART_FIFO_COUNT);
-	for (i = 0; i < count.rfifo_count; i++) {
-		c = (char)gxio_uart_read(context, UART_RECEIVE_DATA);
-		tty_insert_flip_char(port, c, TTY_NORMAL);
-	}
-}
-
-
-/*
- * Drain the Rx FIFO, called by interrupt handler.
- */
-static void handle_receive(struct tile_uart_port *tile_uart)
-{
-	struct tty_port *port = &tile_uart->uart.state->port;
-	struct tty_struct *tty = tty_port_tty_get(port);
-	gxio_uart_context_t *context = &tile_uart->context;
-
-	if (!tty)
-		return;
-
-	/* First read UART rx fifo. */
-	receive_chars(tile_uart, tty);
-
-	/* Reset RFIFO_WE interrupt. */
-	gxio_uart_write(context, UART_INTERRUPT_STATUS,
-			UART_INTERRUPT_MASK__RFIFO_WE_MASK);
-
-	/* Final read, if any chars comes between the first read and
-	 * the interrupt reset.
-	 */
-	receive_chars(tile_uart, tty);
-
-	spin_unlock(&tile_uart->uart.lock);
-	tty_flip_buffer_push(port);
-	spin_lock(&tile_uart->uart.lock);
-	tty_kref_put(tty);
-}
-
-
-/*
- * Push one char to UART Write FIFO.
- * Return 0 on success, -1 if write filo is full.
- */
-static int tilegx_putchar(gxio_uart_context_t *context, char c)
-{
-	UART_FLAG_t flag;
-	flag.word = gxio_uart_read(context, UART_FLAG);
-	if (flag.wfifo_full)
-		return -1;
-
-	gxio_uart_write(context, UART_TRANSMIT_DATA, (unsigned long)c);
-	return 0;
-}
-
-
-/*
- * Send chars to UART Write FIFO; called by interrupt handler.
- */
-static void handle_transmit(struct tile_uart_port *tile_uart)
-{
-	unsigned char ch;
-	struct uart_port *port;
-	struct circ_buf *xmit;
-	gxio_uart_context_t *context = &tile_uart->context;
-
-	/* First reset WFIFO_RE interrupt. */
-	gxio_uart_write(context, UART_INTERRUPT_STATUS,
-			UART_INTERRUPT_MASK__WFIFO_RE_MASK);
-
-	port = &tile_uart->uart;
-	xmit = &port->state->xmit;
-	if (port->x_char) {
-		if (tilegx_putchar(context, port->x_char))
-			return;
-		port->x_char = 0;
-		port->icount.tx++;
-	}
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(port))
-		return;
-
-	while (!uart_circ_empty(xmit)) {
-		ch = xmit->buf[xmit->tail];
-		if (tilegx_putchar(context, ch))
-			break;
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
-	}
-
-	/* Reset WFIFO_RE interrupt. */
-	gxio_uart_write(context, UART_INTERRUPT_STATUS,
-			UART_INTERRUPT_MASK__WFIFO_RE_MASK);
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(port);
-}
-
-
-/*
- * UART Interrupt handler.
- */
-static irqreturn_t tilegx_interrupt(int irq, void *dev_id)
-{
-	unsigned long flags;
-	UART_INTERRUPT_STATUS_t intr_stat;
-	struct tile_uart_port *tile_uart;
-	gxio_uart_context_t *context;
-	struct uart_port *port = dev_id;
-	irqreturn_t ret = IRQ_NONE;
-
-	spin_lock_irqsave(&port->lock, flags);
-
-	tile_uart = container_of(port, struct tile_uart_port, uart);
-	context = &tile_uart->context;
-	intr_stat.word = gxio_uart_read(context, UART_INTERRUPT_STATUS);
-
-	if (intr_stat.rfifo_we) {
-		handle_receive(tile_uart);
-		ret = IRQ_HANDLED;
-	}
-	if (intr_stat.wfifo_re) {
-		handle_transmit(tile_uart);
-		ret = IRQ_HANDLED;
-	}
-
-	spin_unlock_irqrestore(&port->lock, flags);
-	return ret;
-}
-
-
-/*
- * Return TIOCSER_TEMT when transmitter FIFO is empty.
- */
-static u_int tilegx_tx_empty(struct uart_port *port)
-{
-	int ret;
-	UART_FLAG_t flag;
-	struct tile_uart_port *tile_uart;
-	gxio_uart_context_t *context;
-
-	tile_uart = container_of(port, struct tile_uart_port, uart);
-	if (!mutex_trylock(&tile_uart->mutex))
-		return 0;
-	context = &tile_uart->context;
-
-	flag.word = gxio_uart_read(context, UART_FLAG);
-	ret = (flag.wfifo_empty) ? TIOCSER_TEMT : 0;
-	mutex_unlock(&tile_uart->mutex);
-
-	return ret;
-}
-
-
-/*
- * Set state of the modem control output lines.
- */
-static void tilegx_set_mctrl(struct uart_port *port, u_int mctrl)
-{
-	/* N/A */
-}
-
-
-/*
- * Get state of the modem control input lines.
- */
-static u_int tilegx_get_mctrl(struct uart_port *port)
-{
-	return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-}
-
-
-/*
- * Stop transmitting.
- */
-static void tilegx_stop_tx(struct uart_port *port)
-{
-	/* N/A */
-}
-
-
-/*
- * Start transmitting.
- */
-static void tilegx_start_tx(struct uart_port *port)
-{
-	unsigned char ch;
-	struct circ_buf *xmit;
-	struct tile_uart_port *tile_uart;
-	gxio_uart_context_t *context;
-
-	tile_uart = container_of(port, struct tile_uart_port, uart);
-	if (!mutex_trylock(&tile_uart->mutex))
-		return;
-	context = &tile_uart->context;
-	xmit = &port->state->xmit;
-	if (port->x_char) {
-		if (tilegx_putchar(context, port->x_char))
-			return;
-		port->x_char = 0;
-		port->icount.tx++;
-	}
-
-	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
-		mutex_unlock(&tile_uart->mutex);
-		return;
-	}
-
-	while (!uart_circ_empty(xmit)) {
-		ch = xmit->buf[xmit->tail];
-		if (tilegx_putchar(context, ch))
-			break;
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
-	}
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(port);
-
-	mutex_unlock(&tile_uart->mutex);
-}
-
-
-/*
- * Stop receiving - port is in process of being closed.
- */
-static void tilegx_stop_rx(struct uart_port *port)
-{
-	int err;
-	struct tile_uart_port *tile_uart;
-	gxio_uart_context_t *context;
-	int cpu;
-
-	tile_uart = container_of(port, struct tile_uart_port, uart);
-	if (!mutex_trylock(&tile_uart->mutex))
-		return;
-
-	context = &tile_uart->context;
-	cpu = tile_uart->irq_cpu;
-	err = gxio_uart_cfg_interrupt(context, cpu_x(cpu), cpu_y(cpu),
-				      KERNEL_PL, -1);
-	mutex_unlock(&tile_uart->mutex);
-}
-
-/*
- * Control the transmission of a break signal.
- */
-static void tilegx_break_ctl(struct uart_port *port, int break_state)
-{
-	/* N/A */
-}
-
-
-/*
- * Perform initialization and enable port for reception.
- */
-static int tilegx_startup(struct uart_port *port)
-{
-	struct tile_uart_port *tile_uart;
-	gxio_uart_context_t *context;
-	int ret = 0;
-	int cpu = raw_smp_processor_id();  /* pick an arbitrary cpu */
-
-	tile_uart = container_of(port, struct tile_uart_port, uart);
-	if (mutex_lock_interruptible(&tile_uart->mutex))
-		return -EBUSY;
-	context = &tile_uart->context;
-
-	/* Now open the hypervisor device if we haven't already. */
-	if (context->fd < 0) {
-		UART_INTERRUPT_MASK_t intr_mask;
-
-		/* Initialize UART device. */
-		ret = gxio_uart_init(context, port->line);
-		if (ret) {
-			ret = -ENXIO;
-			goto err;
-		}
-
-		/* Create our IRQs. */
-		port->irq = irq_alloc_hwirq(-1);
-		if (!port->irq)
-			goto err_uart_dest;
-		tile_irq_activate(port->irq, TILE_IRQ_PERCPU);
-
-		/* Register our IRQs. */
-		ret = request_irq(port->irq, tilegx_interrupt, 0,
-				  tilegx_uart_driver.driver_name, port);
-		if (ret)
-			goto err_dest_irq;
-
-		/* Request that the hardware start sending us interrupts. */
-		tile_uart->irq_cpu = cpu;
-		ret = gxio_uart_cfg_interrupt(context, cpu_x(cpu), cpu_y(cpu),
-					      KERNEL_PL, port->irq);
-		if (ret)
-			goto err_free_irq;
-
-		/* Enable UART Tx/Rx Interrupt. */
-		intr_mask.word = gxio_uart_read(context, UART_INTERRUPT_MASK);
-		intr_mask.wfifo_re = 0;
-		intr_mask.rfifo_we = 0;
-		gxio_uart_write(context, UART_INTERRUPT_MASK, intr_mask.word);
-
-		/* Reset the Tx/Rx interrupt in case it's set. */
-		gxio_uart_write(context, UART_INTERRUPT_STATUS,
-				UART_INTERRUPT_MASK__WFIFO_RE_MASK |
-				UART_INTERRUPT_MASK__RFIFO_WE_MASK);
-	}
-
-	mutex_unlock(&tile_uart->mutex);
-	return ret;
-
-err_free_irq:
-	free_irq(port->irq, port);
-err_dest_irq:
-	irq_free_hwirq(port->irq);
-err_uart_dest:
-	gxio_uart_destroy(context);
-	ret = -ENXIO;
-err:
-	mutex_unlock(&tile_uart->mutex);
-	return ret;
-}
-
-
-/*
- * Release kernel resources if it is the last close, disable the port,
- * free IRQ and close the port.
- */
-static void tilegx_shutdown(struct uart_port *port)
-{
-	int err;
-	UART_INTERRUPT_MASK_t intr_mask;
-	struct tile_uart_port *tile_uart;
-	gxio_uart_context_t *context;
-	int cpu;
-
-	tile_uart = container_of(port, struct tile_uart_port, uart);
-	if (mutex_lock_interruptible(&tile_uart->mutex))
-		return;
-	context = &tile_uart->context;
-
-	/* Disable UART Tx/Rx Interrupt. */
-	intr_mask.word = gxio_uart_read(context, UART_INTERRUPT_MASK);
-	intr_mask.wfifo_re = 1;
-	intr_mask.rfifo_we = 1;
-	gxio_uart_write(context, UART_INTERRUPT_MASK, intr_mask.word);
-
-	/* Request that the hardware stop sending us interrupts. */
-	cpu = tile_uart->irq_cpu;
-	err = gxio_uart_cfg_interrupt(context, cpu_x(cpu), cpu_y(cpu),
-				      KERNEL_PL, -1);
-
-	if (port->irq > 0) {
-		free_irq(port->irq, port);
-		irq_free_hwirq(port->irq);
-		port->irq = 0;
-	}
-
-	gxio_uart_destroy(context);
-
-	mutex_unlock(&tile_uart->mutex);
-}
-
-
-/*
- * Flush the buffer.
- */
-static void tilegx_flush_buffer(struct uart_port *port)
-{
-	/* N/A */
-}
-
-
-/*
- * Change the port parameters.
- */
-static void tilegx_set_termios(struct uart_port *port,
-			       struct ktermios *termios, struct ktermios *old)
-{
-	int err;
-	UART_DIVISOR_t divisor;
-	UART_TYPE_t type;
-	unsigned int baud;
-	struct tile_uart_port *tile_uart;
-	gxio_uart_context_t *context;
-
-	tile_uart = container_of(port, struct tile_uart_port, uart);
-	if (!mutex_trylock(&tile_uart->mutex))
-		return;
-	context = &tile_uart->context;
-
-	/* Open the hypervisor device if we haven't already. */
-	if (context->fd < 0) {
-		err = gxio_uart_init(context, port->line);
-		if (err) {
-			mutex_unlock(&tile_uart->mutex);
-			return;
-		}
-	}
-
-	divisor.word = gxio_uart_read(context, UART_DIVISOR);
-	type.word = gxio_uart_read(context, UART_TYPE);
-
-	/* Divisor. */
-	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16);
-	divisor.divisor = uart_get_divisor(port, baud);
-
-	/* Byte size. */
-	if ((termios->c_cflag & CSIZE) == CS7)
-		type.dbits = UART_TYPE__DBITS_VAL_SEVEN_DBITS;
-	else
-		type.dbits = UART_TYPE__DBITS_VAL_EIGHT_DBITS;
-
-	/* Parity. */
-	if (termios->c_cflag & PARENB) {
-		/* Mark or Space parity. */
-		if (termios->c_cflag & CMSPAR)
-			if (termios->c_cflag & PARODD)
-				type.ptype = UART_TYPE__PTYPE_VAL_MARK;
-			else
-				type.ptype = UART_TYPE__PTYPE_VAL_SPACE;
-		else if (termios->c_cflag & PARODD)
-			type.ptype = UART_TYPE__PTYPE_VAL_ODD;
-		else
-			type.ptype = UART_TYPE__PTYPE_VAL_EVEN;
-	} else
-		type.ptype = UART_TYPE__PTYPE_VAL_NONE;
-
-	/* Stop bits. */
-	if (termios->c_cflag & CSTOPB)
-		type.sbits = UART_TYPE__SBITS_VAL_TWO_SBITS;
-	else
-		type.sbits = UART_TYPE__SBITS_VAL_ONE_SBITS;
-
-	/* Set the uart paramters. */
-	gxio_uart_write(context, UART_DIVISOR, divisor.word);
-	gxio_uart_write(context, UART_TYPE, type.word);
-
-	mutex_unlock(&tile_uart->mutex);
-}
-
-
-/*
- * Return string describing the specified port.
- */
-static const char *tilegx_type(struct uart_port *port)
-{
-	return port->type == PORT_TILEGX ? DRIVER_NAME_STRING : NULL;
-}
-
-
-/*
- * Release the resources being used by 'port'.
- */
-static void tilegx_release_port(struct uart_port *port)
-{
-	/* Nothing to release. */
-}
-
-
-/*
- * Request the resources being used by 'port'.
- */
-static int tilegx_request_port(struct uart_port *port)
-{
-	/* Always present. */
-	return 0;
-}
-
-
-/*
- * Configure/autoconfigure the port.
- */
-static void tilegx_config_port(struct uart_port *port, int flags)
-{
-	if (flags & UART_CONFIG_TYPE)
-		port->type = PORT_TILEGX;
-}
-
-
-/*
- * Verify the new serial_struct (for TIOCSSERIAL).
- */
-static int tilegx_verify_port(struct uart_port *port,
-			      struct serial_struct *ser)
-{
-	if ((ser->type != PORT_UNKNOWN) && (ser->type != PORT_TILEGX))
-		return -EINVAL;
-
-	return 0;
-}
-
-#ifdef CONFIG_CONSOLE_POLL
-
-/*
- * Console polling routines for writing and reading from the uart while
- * in an interrupt or debug context.
- */
-
-static int tilegx_poll_get_char(struct uart_port *port)
-{
-	UART_FIFO_COUNT_t count;
-	gxio_uart_context_t *context;
-	struct tile_uart_port *tile_uart;
-
-	tile_uart = container_of(port, struct tile_uart_port, uart);
-	context = &tile_uart->context;
-	count.word = gxio_uart_read(context, UART_FIFO_COUNT);
-	if (count.rfifo_count == 0)
-		return NO_POLL_CHAR;
-	return (char)gxio_uart_read(context, UART_RECEIVE_DATA);
-}
-
-static void tilegx_poll_put_char(struct uart_port *port, unsigned char c)
-{
-	gxio_uart_context_t *context;
-	struct tile_uart_port *tile_uart;
-
-	tile_uart = container_of(port, struct tile_uart_port, uart);
-	context = &tile_uart->context;
-	gxio_uart_write(context, UART_TRANSMIT_DATA, (unsigned long)c);
-}
-
-#endif /* CONFIG_CONSOLE_POLL */
-
-
-static const struct uart_ops tilegx_ops = {
-	.tx_empty	= tilegx_tx_empty,
-	.set_mctrl	= tilegx_set_mctrl,
-	.get_mctrl	= tilegx_get_mctrl,
-	.stop_tx	= tilegx_stop_tx,
-	.start_tx	= tilegx_start_tx,
-	.stop_rx	= tilegx_stop_rx,
-	.break_ctl	= tilegx_break_ctl,
-	.startup	= tilegx_startup,
-	.shutdown	= tilegx_shutdown,
-	.flush_buffer	= tilegx_flush_buffer,
-	.set_termios	= tilegx_set_termios,
-	.type		= tilegx_type,
-	.release_port	= tilegx_release_port,
-	.request_port	= tilegx_request_port,
-	.config_port	= tilegx_config_port,
-	.verify_port	= tilegx_verify_port,
-#ifdef CONFIG_CONSOLE_POLL
-	.poll_get_char	= tilegx_poll_get_char,
-	.poll_put_char	= tilegx_poll_put_char,
-#endif
-};
-
-
-static void tilegx_init_ports(void)
-{
-	int i;
-	struct uart_port *port;
-
-	for (i = 0; i < TILEGX_UART_NR; i++) {
-		port = &tile_uart_ports[i].uart;
-		port->ops = &tilegx_ops;
-		port->line = i;
-		port->type = PORT_TILEGX;
-		port->uartclk = TILEGX_UART_REF_CLK;
-		port->flags = UPF_BOOT_AUTOCONF;
-
-		tile_uart_ports[i].context.fd = -1;
-		mutex_init(&tile_uart_ports[i].mutex);
-	}
-}
-
-
-static struct uart_driver tilegx_uart_driver = {
-	.owner		= THIS_MODULE,
-	.driver_name	= DRIVER_NAME_STRING,
-	.dev_name	= TILEGX_UART_NAME,
-	.major		= TILEGX_UART_MAJOR,
-	.minor		= TILEGX_UART_MINOR,
-	.nr		= TILEGX_UART_NR,
-};
-
-
-static int __init tilegx_init(void)
-{
-	int i;
-	int ret;
-	struct tty_driver *tty_drv;
-
-	ret = uart_register_driver(&tilegx_uart_driver);
-	if (ret)
-		return ret;
-	tty_drv = tilegx_uart_driver.tty_driver;
-	tty_drv->init_termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
-	tty_drv->init_termios.c_ispeed = 115200;
-	tty_drv->init_termios.c_ospeed = 115200;
-
-	tilegx_init_ports();
-
-	for (i = 0; i < TILEGX_UART_NR; i++) {
-		struct uart_port *port = &tile_uart_ports[i].uart;
-		ret = uart_add_one_port(&tilegx_uart_driver, port);
-	}
-
-	return 0;
-}
-
-
-static void __exit tilegx_exit(void)
-{
-	int i;
-	struct uart_port *port;
-
-	for (i = 0; i < TILEGX_UART_NR; i++) {
-		port = &tile_uart_ports[i].uart;
-		uart_remove_one_port(&tilegx_uart_driver, port);
-	}
-
-	uart_unregister_driver(&tilegx_uart_driver);
-}
-
-
-module_init(tilegx_init);
-module_exit(tilegx_exit);
-
-MODULE_AUTHOR("Tilera Corporation");
-MODULE_DESCRIPTION("TILEGx serial port driver");
-MODULE_LICENSE("GPL");