spi: Zap ep93xx_spi driver and related code

Dropped becuase
- driver and related configs not used any board.
- no dm conversion.

Cc: Heiko Schocher <hs@denx.de>
Cc: Sergey Kostanbaev <sergey.kostanbaev@gmail.com>
Signed-off-by: Jagan Teki <jagan@openedev.com>

2 files changed, 0 insertions, 273 deletions

diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index c1ce1580a2b..521911bb8e6 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -26,7 +26,6 @@ obj-$(CONFIG_CF_SPI) += cf_spi.o
 obj-$(CONFIG_CF_QSPI) += cf_qspi.o
 obj-$(CONFIG_DAVINCI_SPI) += davinci_spi.o
 obj-$(CONFIG_DESIGNWARE_SPI) += designware_spi.o
-obj-$(CONFIG_EP93XX_SPI) += ep93xx_spi.o
 obj-$(CONFIG_EXYNOS_SPI) += exynos_spi.o
 obj-$(CONFIG_FSL_DSPI) += fsl_dspi.o
 obj-$(CONFIG_FSL_ESPI) += fsl_espi.o
diff --git a/drivers/spi/ep93xx_spi.c b/drivers/spi/ep93xx_spi.c
deleted file mode 100644
index cb682ddda48..00000000000
--- a/drivers/spi/ep93xx_spi.c
+++ /dev/null
@@ -1,272 +0,0 @@
-/*
- * SPI Driver for EP93xx
- *
- * Copyright (C) 2013 Sergey Kostanabev <sergey.kostanbaev <at> fairwaves.ru>
- *
- * Inspired form linux kernel driver and atmel uboot driver
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <spi.h>
-#include <malloc.h>
-
-#include <asm/io.h>
-
-#include <asm/arch/ep93xx.h>
-
-#define SSPBASE			SPI_BASE
-
-#define SSPCR0			0x0000
-#define SSPCR0_MODE_SHIFT	6
-#define SSPCR0_SCR_SHIFT	8
-#define SSPCR0_SPH		BIT(7)
-#define SSPCR0_SPO		BIT(6)
-#define SSPCR0_FRF_SPI		0
-#define SSPCR0_DSS_8BIT		7
-
-#define SSPCR1			0x0004
-#define SSPCR1_RIE		BIT(0)
-#define SSPCR1_TIE		BIT(1)
-#define SSPCR1_RORIE		BIT(2)
-#define SSPCR1_LBM		BIT(3)
-#define SSPCR1_SSE		BIT(4)
-#define SSPCR1_MS		BIT(5)
-#define SSPCR1_SOD		BIT(6)
-
-#define SSPDR			0x0008
-
-#define SSPSR			0x000c
-#define SSPSR_TFE		BIT(0)
-#define SSPSR_TNF		BIT(1)
-#define SSPSR_RNE		BIT(2)
-#define SSPSR_RFF		BIT(3)
-#define SSPSR_BSY		BIT(4)
-#define SSPCPSR			0x0010
-
-#define SSPIIR			0x0014
-#define SSPIIR_RIS		BIT(0)
-#define SSPIIR_TIS		BIT(1)
-#define SSPIIR_RORIS		BIT(2)
-#define SSPICR			SSPIIR
-
-#define SSPCLOCK		14745600
-#define SSP_MAX_RATE		(SSPCLOCK / 2)
-#define SSP_MIN_RATE		(SSPCLOCK / (254 * 256))
-
-/* timeout in milliseconds */
-#define SPI_TIMEOUT		5
-/* maximum depth of RX/TX FIFO */
-#define SPI_FIFO_SIZE		8
-
-struct ep93xx_spi_slave {
-	struct spi_slave slave;
-
-	unsigned sspcr0;
-	unsigned sspcpsr;
-};
-
-static inline struct ep93xx_spi_slave *to_ep93xx_spi(struct spi_slave *slave)
-{
-	return container_of(slave, struct ep93xx_spi_slave, slave);
-}
-
-void spi_init()
-{
-}
-
-static inline void ep93xx_spi_write_u8(u16 reg, u8 value)
-{
-	writel(value, (unsigned int *)(SSPBASE + reg));
-}
-
-static inline u8 ep93xx_spi_read_u8(u16 reg)
-{
-	return readl((unsigned int *)(SSPBASE + reg));
-}
-
-static inline void ep93xx_spi_write_u16(u16 reg, u16 value)
-{
-	writel(value, (unsigned int *)(SSPBASE + reg));
-}
-
-static inline u16 ep93xx_spi_read_u16(u16 reg)
-{
-	return (u16)readl((unsigned int *)(SSPBASE + reg));
-}
-
-static int ep93xx_spi_init_hw(unsigned int rate, unsigned int mode,
-				struct ep93xx_spi_slave *slave)
-{
-	unsigned cpsr, scr;
-
-	if (rate > SSP_MAX_RATE)
-		rate = SSP_MAX_RATE;
-
-	if (rate < SSP_MIN_RATE)
-		return -1;
-
-	/* Calculate divisors so that we can get speed according the
-	 * following formula:
-	 *	rate = spi_clock_rate / (cpsr * (1 + scr))
-	 *
-	 * cpsr must be even number and starts from 2, scr can be any number
-	 * between 0 and 255.
-	 */
-	for (cpsr = 2; cpsr <= 254; cpsr += 2) {
-		for (scr = 0; scr <= 255; scr++) {
-			if ((SSPCLOCK / (cpsr * (scr + 1))) <= rate) {
-				/* Set CHPA and CPOL, SPI format and 8bit */
-				unsigned sspcr0 = (scr << SSPCR0_SCR_SHIFT) |
-					SSPCR0_FRF_SPI | SSPCR0_DSS_8BIT;
-				if (mode & SPI_CPHA)
-					sspcr0 |= SSPCR0_SPH;
-				if (mode & SPI_CPOL)
-					sspcr0 |= SSPCR0_SPO;
-
-				slave->sspcr0 = sspcr0;
-				slave->sspcpsr = cpsr;
-				return 0;
-			}
-		}
-	}
-
-	return -1;
-}
-
-void spi_set_speed(struct spi_slave *slave, unsigned int hz)
-{
-	struct ep93xx_spi_slave *as = to_ep93xx_spi(slave);
-
-	unsigned int mode = 0;
-	if (as->sspcr0 & SSPCR0_SPH)
-		mode |= SPI_CPHA;
-	if (as->sspcr0 & SSPCR0_SPO)
-		mode |= SPI_CPOL;
-
-	ep93xx_spi_init_hw(hz, mode, as);
-}
-
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
-			unsigned int max_hz, unsigned int mode)
-{
-	struct ep93xx_spi_slave	*as;
-
-	if (!spi_cs_is_valid(bus, cs))
-		return NULL;
-
-	as = spi_alloc_slave(struct ep93xx_spi_slave, bus, cs);
-	if (!as)
-		return NULL;
-
-	if (ep93xx_spi_init_hw(max_hz, mode, as)) {
-		free(as);
-		return NULL;
-	}
-
-	return &as->slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
-	struct ep93xx_spi_slave *as = to_ep93xx_spi(slave);
-
-	free(as);
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
-	struct ep93xx_spi_slave *as = to_ep93xx_spi(slave);
-
-	/* Enable the SPI hardware */
-	ep93xx_spi_write_u8(SSPCR1, SSPCR1_SSE);
-
-
-	ep93xx_spi_write_u8(SSPCPSR, as->sspcpsr);
-	ep93xx_spi_write_u16(SSPCR0, as->sspcr0);
-
-	debug("Select CS:%d SSPCPSR=%02x SSPCR0=%04x\n",
-	      slave->cs, as->sspcpsr, as->sspcr0);
-	return 0;
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
-	/* Disable the SPI hardware */
-	ep93xx_spi_write_u8(SSPCR1, 0);
-}
-
-int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
-		const void *dout, void *din, unsigned long flags)
-{
-	unsigned int	len_tx;
-	unsigned int	len_rx;
-	unsigned int	len;
-	u32		status;
-	const u8	*txp = dout;
-	u8		*rxp = din;
-	u8		value;
-
-	debug("spi_xfer: slave %u:%u dout %p din %p bitlen %u\n",
-	      slave->bus, slave->cs, (uint *)dout, (uint *)din, bitlen);
-
-
-	if (bitlen == 0)
-		/* Finish any previously submitted transfers */
-		goto out;
-
-	if (bitlen % 8) {
-		/* Errors always terminate an ongoing transfer */
-		flags |= SPI_XFER_END;
-		goto out;
-	}
-
-	len = bitlen / 8;
-
-
-	if (flags & SPI_XFER_BEGIN) {
-		/* Empty RX FIFO */
-		while ((ep93xx_spi_read_u8(SSPSR) & SSPSR_RNE))
-			ep93xx_spi_read_u8(SSPDR);
-
-		spi_cs_activate(slave);
-	}
-
-	for (len_tx = 0, len_rx = 0; len_rx < len; ) {
-		status = ep93xx_spi_read_u8(SSPSR);
-
-		if ((len_tx < len) && (status & SSPSR_TNF)) {
-			if (txp)
-				value = *txp++;
-			else
-				value = 0xff;
-
-			ep93xx_spi_write_u8(SSPDR, value);
-			len_tx++;
-		}
-
-		if (status & SSPSR_RNE) {
-			value = ep93xx_spi_read_u8(SSPDR);
-
-			if (rxp)
-				*rxp++ = value;
-			len_rx++;
-		}
-	}
-
-out:
-	if (flags & SPI_XFER_END) {
-		/*
-		 * Wait until the transfer is completely done before
-		 * we deactivate CS.
-		 */
-		do {
-			status = ep93xx_spi_read_u8(SSPSR);
-		} while (status & SSPSR_BSY);
-
-		spi_cs_deactivate(slave);
-	}
-
-	return 0;
-}