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Diffstat (limited to 'arch/arm/plat-s3c/clock.c')
-rw-r--r--arch/arm/plat-s3c/clock.c369
1 files changed, 0 insertions, 369 deletions
diff --git a/arch/arm/plat-s3c/clock.c b/arch/arm/plat-s3c/clock.c
deleted file mode 100644
index fa91125c7e0e..000000000000
--- a/arch/arm/plat-s3c/clock.c
+++ /dev/null
@@ -1,369 +0,0 @@
-/* linux/arch/arm/plat-s3c24xx/clock.c
- *
- * Copyright 2004-2005 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
- *
- * S3C24XX Core clock control support
- *
- * Based on, and code from linux/arch/arm/mach-versatile/clock.c
- **
- ** Copyright (C) 2004 ARM Limited.
- ** Written by Deep Blue Solutions Limited.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/platform_device.h>
-#include <linux/sysdev.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/clk.h>
-#include <linux/spinlock.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <asm/irq.h>
-
-#include <plat/cpu-freq.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-/* clock information */
-
-static LIST_HEAD(clocks);
-
-/* We originally used an mutex here, but some contexts (see resume)
- * are calling functions such as clk_set_parent() with IRQs disabled
- * causing an BUG to be triggered.
- */
-DEFINE_SPINLOCK(clocks_lock);
-
-/* enable and disable calls for use with the clk struct */
-
-static int clk_null_enable(struct clk *clk, int enable)
-{
- return 0;
-}
-
-/* Clock API calls */
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
- struct clk *p;
- struct clk *clk = ERR_PTR(-ENOENT);
- int idno;
-
- if (dev == NULL || dev->bus != &platform_bus_type)
- idno = -1;
- else
- idno = to_platform_device(dev)->id;
-
- spin_lock(&clocks_lock);
-
- list_for_each_entry(p, &clocks, list) {
- if (p->id == idno &&
- strcmp(id, p->name) == 0 &&
- try_module_get(p->owner)) {
- clk = p;
- break;
- }
- }
-
- /* check for the case where a device was supplied, but the
- * clock that was being searched for is not device specific */
-
- if (IS_ERR(clk)) {
- list_for_each_entry(p, &clocks, list) {
- if (p->id == -1 && strcmp(id, p->name) == 0 &&
- try_module_get(p->owner)) {
- clk = p;
- break;
- }
- }
- }
-
- spin_unlock(&clocks_lock);
- return clk;
-}
-
-void clk_put(struct clk *clk)
-{
- module_put(clk->owner);
-}
-
-int clk_enable(struct clk *clk)
-{
- if (IS_ERR(clk) || clk == NULL)
- return -EINVAL;
-
- clk_enable(clk->parent);
-
- spin_lock(&clocks_lock);
-
- if ((clk->usage++) == 0)
- (clk->enable)(clk, 1);
-
- spin_unlock(&clocks_lock);
- return 0;
-}
-
-void clk_disable(struct clk *clk)
-{
- if (IS_ERR(clk) || clk == NULL)
- return;
-
- spin_lock(&clocks_lock);
-
- if ((--clk->usage) == 0)
- (clk->enable)(clk, 0);
-
- spin_unlock(&clocks_lock);
- clk_disable(clk->parent);
-}
-
-
-unsigned long clk_get_rate(struct clk *clk)
-{
- if (IS_ERR(clk))
- return 0;
-
- if (clk->rate != 0)
- return clk->rate;
-
- if (clk->ops != NULL && clk->ops->get_rate != NULL)
- return (clk->ops->get_rate)(clk);
-
- if (clk->parent != NULL)
- return clk_get_rate(clk->parent);
-
- return clk->rate;
-}
-
-long clk_round_rate(struct clk *clk, unsigned long rate)
-{
- if (!IS_ERR(clk) && clk->ops && clk->ops->round_rate)
- return (clk->ops->round_rate)(clk, rate);
-
- return rate;
-}
-
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
- int ret;
-
- if (IS_ERR(clk))
- return -EINVAL;
-
- /* We do not default just do a clk->rate = rate as
- * the clock may have been made this way by choice.
- */
-
- WARN_ON(clk->ops == NULL);
- WARN_ON(clk->ops && clk->ops->set_rate == NULL);
-
- if (clk->ops == NULL || clk->ops->set_rate == NULL)
- return -EINVAL;
-
- spin_lock(&clocks_lock);
- ret = (clk->ops->set_rate)(clk, rate);
- spin_unlock(&clocks_lock);
-
- return ret;
-}
-
-struct clk *clk_get_parent(struct clk *clk)
-{
- return clk->parent;
-}
-
-int clk_set_parent(struct clk *clk, struct clk *parent)
-{
- int ret = 0;
-
- if (IS_ERR(clk))
- return -EINVAL;
-
- spin_lock(&clocks_lock);
-
- if (clk->ops && clk->ops->set_parent)
- ret = (clk->ops->set_parent)(clk, parent);
-
- spin_unlock(&clocks_lock);
-
- return ret;
-}
-
-EXPORT_SYMBOL(clk_get);
-EXPORT_SYMBOL(clk_put);
-EXPORT_SYMBOL(clk_enable);
-EXPORT_SYMBOL(clk_disable);
-EXPORT_SYMBOL(clk_get_rate);
-EXPORT_SYMBOL(clk_round_rate);
-EXPORT_SYMBOL(clk_set_rate);
-EXPORT_SYMBOL(clk_get_parent);
-EXPORT_SYMBOL(clk_set_parent);
-
-/* base clocks */
-
-static int clk_default_setrate(struct clk *clk, unsigned long rate)
-{
- clk->rate = rate;
- return 0;
-}
-
-static struct clk_ops clk_ops_def_setrate = {
- .set_rate = clk_default_setrate,
-};
-
-struct clk clk_xtal = {
- .name = "xtal",
- .id = -1,
- .rate = 0,
- .parent = NULL,
- .ctrlbit = 0,
-};
-
-struct clk clk_ext = {
- .name = "ext",
- .id = -1,
-};
-
-struct clk clk_epll = {
- .name = "epll",
- .id = -1,
-};
-
-struct clk clk_mpll = {
- .name = "mpll",
- .id = -1,
- .ops = &clk_ops_def_setrate,
-};
-
-struct clk clk_upll = {
- .name = "upll",
- .id = -1,
- .parent = NULL,
- .ctrlbit = 0,
-};
-
-struct clk clk_f = {
- .name = "fclk",
- .id = -1,
- .rate = 0,
- .parent = &clk_mpll,
- .ctrlbit = 0,
-};
-
-struct clk clk_h = {
- .name = "hclk",
- .id = -1,
- .rate = 0,
- .parent = NULL,
- .ctrlbit = 0,
- .ops = &clk_ops_def_setrate,
-};
-
-struct clk clk_p = {
- .name = "pclk",
- .id = -1,
- .rate = 0,
- .parent = NULL,
- .ctrlbit = 0,
- .ops = &clk_ops_def_setrate,
-};
-
-struct clk clk_usb_bus = {
- .name = "usb-bus",
- .id = -1,
- .rate = 0,
- .parent = &clk_upll,
-};
-
-
-struct clk s3c24xx_uclk = {
- .name = "uclk",
- .id = -1,
-};
-
-/* initialise the clock system */
-
-int s3c24xx_register_clock(struct clk *clk)
-{
- if (clk->enable == NULL)
- clk->enable = clk_null_enable;
-
- /* add to the list of available clocks */
-
- /* Quick check to see if this clock has already been registered. */
- BUG_ON(clk->list.prev != clk->list.next);
-
- spin_lock(&clocks_lock);
- list_add(&clk->list, &clocks);
- spin_unlock(&clocks_lock);
-
- return 0;
-}
-
-int s3c24xx_register_clocks(struct clk **clks, int nr_clks)
-{
- int fails = 0;
-
- for (; nr_clks > 0; nr_clks--, clks++) {
- if (s3c24xx_register_clock(*clks) < 0)
- fails++;
- }
-
- return fails;
-}
-
-/* initalise all the clocks */
-
-int __init s3c24xx_register_baseclocks(unsigned long xtal)
-{
- printk(KERN_INFO "S3C24XX Clocks, Copyright 2004 Simtec Electronics\n");
-
- clk_xtal.rate = xtal;
-
- /* register our clocks */
-
- if (s3c24xx_register_clock(&clk_xtal) < 0)
- printk(KERN_ERR "failed to register master xtal\n");
-
- if (s3c24xx_register_clock(&clk_mpll) < 0)
- printk(KERN_ERR "failed to register mpll clock\n");
-
- if (s3c24xx_register_clock(&clk_upll) < 0)
- printk(KERN_ERR "failed to register upll clock\n");
-
- if (s3c24xx_register_clock(&clk_f) < 0)
- printk(KERN_ERR "failed to register cpu fclk\n");
-
- if (s3c24xx_register_clock(&clk_h) < 0)
- printk(KERN_ERR "failed to register cpu hclk\n");
-
- if (s3c24xx_register_clock(&clk_p) < 0)
- printk(KERN_ERR "failed to register cpu pclk\n");
-
- return 0;
-}
-
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