[U-Boot,U-Boot,v2,02/17] spi: Zap ftssp010_spi driver

diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 93065b7..1e3611d 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -28,7 +28,6 @@  obj-$(CONFIG_CF_QSPI) += cf_qspi.o
 obj-$(CONFIG_DAVINCI_SPI) += davinci_spi.o
 obj-$(CONFIG_DESIGNWARE_SPI) += designware_spi.o
 obj-$(CONFIG_EXYNOS_SPI) += exynos_spi.o
-obj-$(CONFIG_FTSSP010_SPI) += ftssp010_spi.o
 obj-$(CONFIG_ICH_SPI) +=  ich.o
 obj-$(CONFIG_KIRKWOOD_SPI) += kirkwood_spi.o
 obj-$(CONFIG_LPC32XX_SSP) += lpc32xx_ssp.o
diff --git a/drivers/spi/ftssp010_spi.c b/drivers/spi/ftssp010_spi.c
deleted file mode 100644
index c7d6480..0000000
--- a/drivers/spi/ftssp010_spi.c
+++ /dev/null
@@ -1,498 +0,0 @@ 
-/*
- * (C) Copyright 2013
- * Faraday Technology Corporation. <http://www.faraday-tech.com/tw/>
- * Kuo-Jung Su <dantesu@gmail.com>
- *
- * SPDX-License-Identifier:     GPL-2.0+
- */
-
-#include <common.h>
-#include <linux/compat.h>
-#include <asm/io.h>
-#include <malloc.h>
-#include <spi.h>
-
-#ifndef CONFIG_FTSSP010_BASE_LIST
-#define CONFIG_FTSSP010_BASE_LIST   { CONFIG_FTSSP010_BASE }
-#endif
-
-#ifndef CONFIG_FTSSP010_GPIO_BASE
-#define CONFIG_FTSSP010_GPIO_BASE   0
-#endif
-
-#ifndef CONFIG_FTSSP010_GPIO_LIST
-#define CONFIG_FTSSP010_GPIO_LIST   { CONFIG_FTSSP010_GPIO_BASE }
-#endif
-
-#ifndef CONFIG_FTSSP010_CLOCK
-#define CONFIG_FTSSP010_CLOCK       clk_get_rate("SSP");
-#endif
-
-#ifndef CONFIG_FTSSP010_TIMEOUT
-#define CONFIG_FTSSP010_TIMEOUT     100
-#endif
-
-/* FTSSP010 chip registers */
-struct ftssp010_regs {
-	uint32_t cr[3];/* control register */
-	uint32_t sr;   /* status register */
-	uint32_t icr;  /* interrupt control register */
-	uint32_t isr;  /* interrupt status register */
-	uint32_t dr;   /* data register */
-	uint32_t rsvd[17];
-	uint32_t revr; /* revision register */
-	uint32_t fear; /* feature register */
-};
-
-/* Control Register 0  */
-#define CR0_FFMT_MASK       (7 << 12)
-#define CR0_FFMT_SSP        (0 << 12)
-#define CR0_FFMT_SPI        (1 << 12)
-#define CR0_FFMT_MICROWIRE  (2 << 12)
-#define CR0_FFMT_I2S        (3 << 12)
-#define CR0_FFMT_AC97       (4 << 12)
-#define CR0_FLASH           (1 << 11)
-#define CR0_FSDIST(x)       (((x) & 0x03) << 8)
-#define CR0_LOOP            (1 << 7)  /* loopback mode */
-#define CR0_LSB             (1 << 6)  /* LSB */
-#define CR0_FSPO            (1 << 5)  /* fs atcive low (I2S only) */
-#define CR0_FSJUSTIFY       (1 << 4)
-#define CR0_OPM_SLAVE       (0 << 2)
-#define CR0_OPM_MASTER      (3 << 2)
-#define CR0_OPM_I2S_MSST    (3 << 2)  /* master stereo mode */
-#define CR0_OPM_I2S_MSMO    (2 << 2)  /* master mono mode */
-#define CR0_OPM_I2S_SLST    (1 << 2)  /* slave stereo mode */
-#define CR0_OPM_I2S_SLMO    (0 << 2)  /* slave mono mode */
-#define CR0_SCLKPO          (1 << 1)  /* clock polarity */
-#define CR0_SCLKPH          (1 << 0)  /* clock phase */
-
-/* Control Register 1 */
-#define CR1_PDL(x)   (((x) & 0xff) << 24) /* padding length */
-#define CR1_SDL(x)   ((((x) - 1) & 0x1f) << 16) /* data length */
-#define CR1_DIV(x)   (((x) - 1) & 0xffff) /* clock divider */
-
-/* Control Register 2 */
-#define CR2_CS(x)    (((x) & 3) << 10) /* CS/FS select */
-#define CR2_FS       (1 << 9) /* CS/FS signal level */
-#define CR2_TXEN     (1 << 8) /* tx enable */
-#define CR2_RXEN     (1 << 7) /* rx enable */
-#define CR2_RESET    (1 << 6) /* chip reset */
-#define CR2_TXFC     (1 << 3) /* tx fifo Clear */
-#define CR2_RXFC     (1 << 2) /* rx fifo Clear */
-#define CR2_TXDOE    (1 << 1) /* tx data output enable */
-#define CR2_EN       (1 << 0) /* chip enable */
-
-/* Status Register */
-#define SR_RFF       (1 << 0) /* rx fifo full */
-#define SR_TFNF      (1 << 1) /* tx fifo not full */
-#define SR_BUSY      (1 << 2) /* chip busy */
-#define SR_RFVE(reg) (((reg) >> 4) & 0x1f)  /* rx fifo valid entries */
-#define SR_TFVE(reg) (((reg) >> 12) & 0x1f) /* tx fifo valid entries */
-
-/* Feature Register */
-#define FEAR_BITS(reg)   ((((reg) >>  0) & 0xff) + 1) /* data width */
-#define FEAR_RFSZ(reg)   ((((reg) >>  8) & 0xff) + 1) /* rx fifo size */
-#define FEAR_TFSZ(reg)   ((((reg) >> 16) & 0xff) + 1) /* tx fifo size */
-#define FEAR_AC97        (1 << 24)
-#define FEAR_I2S         (1 << 25)
-#define FEAR_SPI_MWR     (1 << 26)
-#define FEAR_SSP         (1 << 27)
-#define FEAR_SPDIF       (1 << 28)
-
-/* FTGPIO010 chip registers */
-struct ftgpio010_regs {
-	uint32_t out;     /* 0x00: Data Output */
-	uint32_t in;      /* 0x04: Data Input */
-	uint32_t dir;     /* 0x08: Direction */
-	uint32_t bypass;  /* 0x0c: Bypass */
-	uint32_t set;     /* 0x10: Data Set */
-	uint32_t clr;     /* 0x14: Data Clear */
-	uint32_t pull_up; /* 0x18: Pull-Up Enabled */
-	uint32_t pull_st; /* 0x1c: Pull State (0=pull-down, 1=pull-up) */
-};
-
-struct ftssp010_gpio {
-	struct ftgpio010_regs *regs;
-	uint32_t pin;
-};
-
-struct ftssp010_spi {
-	struct spi_slave slave;
-	struct ftssp010_gpio gpio;
-	struct ftssp010_regs *regs;
-	uint32_t fifo;
-	uint32_t mode;
-	uint32_t div;
-	uint32_t clk;
-	uint32_t speed;
-	uint32_t revision;
-};
-
-static inline struct ftssp010_spi *to_ftssp010_spi(struct spi_slave *slave)
-{
-	return container_of(slave, struct ftssp010_spi, slave);
-}
-
-static int get_spi_chip(int bus, struct ftssp010_spi *chip)
-{
-	uint32_t fear, base[] = CONFIG_FTSSP010_BASE_LIST;
-
-	if (bus >= ARRAY_SIZE(base) || !base[bus])
-		return -1;
-
-	chip->regs = (struct ftssp010_regs *)base[bus];
-
-	chip->revision = readl(&chip->regs->revr);
-
-	fear = readl(&chip->regs->fear);
-	chip->fifo = min_t(uint32_t, FEAR_TFSZ(fear), FEAR_RFSZ(fear));
-
-	return 0;
-}
-
-static int get_spi_gpio(int bus, struct ftssp010_gpio *chip)
-{
-	uint32_t base[] = CONFIG_FTSSP010_GPIO_LIST;
-
-	if (bus >= ARRAY_SIZE(base) || !base[bus])
-		return -1;
-
-	chip->regs = (struct ftgpio010_regs *)(base[bus] & 0xfff00000);
-	chip->pin = base[bus] & 0x1f;
-
-	/* make it an output pin */
-	setbits_le32(&chip->regs->dir, 1 << chip->pin);
-
-	return 0;
-}
-
-static int ftssp010_wait(struct ftssp010_spi *chip)
-{
-	struct ftssp010_regs *regs = chip->regs;
-	ulong t;
-
-	/* wait until device idle */
-	for (t = get_timer(0); get_timer(t) < CONFIG_FTSSP010_TIMEOUT; ) {
-		if (!(readl(&regs->sr) & SR_BUSY))
-			return 0;
-	}
-
-	puts("ftspi010: busy timeout\n");
-
-	return -1;
-}
-
-static int ftssp010_wait_tx(struct ftssp010_spi *chip)
-{
-	struct ftssp010_regs *regs = chip->regs;
-	ulong t;
-
-	/* wait until tx fifo not full */
-	for (t = get_timer(0); get_timer(t) < CONFIG_FTSSP010_TIMEOUT; ) {
-		if (readl(&regs->sr) & SR_TFNF)
-			return 0;
-	}
-
-	puts("ftssp010: tx timeout\n");
-
-	return -1;
-}
-
-static int ftssp010_wait_rx(struct ftssp010_spi *chip)
-{
-	struct ftssp010_regs *regs = chip->regs;
-	ulong t;
-
-	/* wait until rx fifo not empty */
-	for (t = get_timer(0); get_timer(t) < CONFIG_FTSSP010_TIMEOUT; ) {
-		if (SR_RFVE(readl(&regs->sr)))
-			return 0;
-	}
-
-	puts("ftssp010: rx timeout\n");
-
-	return -1;
-}
-
-static int ftssp010_spi_work_transfer_v2(struct ftssp010_spi *chip,
-	const void *tx_buf, void *rx_buf, int len, uint flags)
-{
-	struct ftssp010_regs *regs = chip->regs;
-	const uint8_t *txb = tx_buf;
-	uint8_t       *rxb = rx_buf;
-
-	while (len > 0) {
-		int i, depth = min(chip->fifo >> 2, len);
-		uint32_t xmsk = 0;
-
-		if (tx_buf) {
-			for (i = 0; i < depth; ++i) {
-				ftssp010_wait_tx(chip);
-				writel(*txb++, &regs->dr);
-			}
-			xmsk |= CR2_TXEN | CR2_TXDOE;
-			if ((readl(&regs->cr[2]) & xmsk) != xmsk)
-				setbits_le32(&regs->cr[2], xmsk);
-		}
-		if (rx_buf) {
-			xmsk |= CR2_RXEN;
-			if ((readl(&regs->cr[2]) & xmsk) != xmsk)
-				setbits_le32(&regs->cr[2], xmsk);
-			for (i = 0; i < depth; ++i) {
-				ftssp010_wait_rx(chip);
-				*rxb++ = (uint8_t)readl(&regs->dr);
-			}
-		}
-
-		len -= depth;
-	}
-
-	return 0;
-}
-
-static int ftssp010_spi_work_transfer_v1(struct ftssp010_spi *chip,
-	const void *tx_buf, void *rx_buf, int len, uint flags)
-{
-	struct ftssp010_regs *regs = chip->regs;
-	const uint8_t *txb = tx_buf;
-	uint8_t       *rxb = rx_buf;
-
-	while (len > 0) {
-		int i, depth = min(chip->fifo >> 2, len);
-		uint32_t tmp;
-
-		for (i = 0; i < depth; ++i) {
-			ftssp010_wait_tx(chip);
-			writel(txb ? (*txb++) : 0, &regs->dr);
-		}
-		for (i = 0; i < depth; ++i) {
-			ftssp010_wait_rx(chip);
-			tmp = readl(&regs->dr);
-			if (rxb)
-				*rxb++ = (uint8_t)tmp;
-		}
-
-		len -= depth;
-	}
-
-	return 0;
-}
-
-static void ftssp010_cs_set(struct ftssp010_spi *chip, int high)
-{
-	struct ftssp010_regs *regs = chip->regs;
-	struct ftssp010_gpio *gpio = &chip->gpio;
-	uint32_t mask;
-
-	/* cs pull high/low */
-	if (chip->revision >= 0x11900) {
-		mask = CR2_CS(chip->slave.cs) | (high ? CR2_FS : 0);
-		writel(mask, &regs->cr[2]);
-	} else if (gpio->regs) {
-		mask = 1 << gpio->pin;
-		if (high)
-			writel(mask, &gpio->regs->set);
-		else
-			writel(mask, &gpio->regs->clr);
-	}
-
-	/* extra delay for signal propagation */
-	udelay_masked(1);
-}
-
-/*
- * Determine if a SPI chipselect is valid.
- * This function is provided by the board if the low-level SPI driver
- * needs it to determine if a given chipselect is actually valid.
- *
- * Returns: 1 if bus:cs identifies a valid chip on this board, 0
- * otherwise.
- */
-int spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
-	struct ftssp010_spi chip;
-
-	if (get_spi_chip(bus, &chip))
-		return 0;
-
-	if (!cs)
-		return 1;
-	else if ((cs < 4) && (chip.revision >= 0x11900))
-		return 1;
-
-	return 0;
-}
-
-/*
- * Activate a SPI chipselect.
- * This function is provided by the board code when using a driver
- * that can't control its chipselects automatically (e.g.
- * common/soft_spi.c). When called, it should activate the chip select
- * to the device identified by "slave".
- */
-void spi_cs_activate(struct spi_slave *slave)
-{
-	struct ftssp010_spi *chip = to_ftssp010_spi(slave);
-	struct ftssp010_regs *regs = chip->regs;
-
-	/* cs pull */
-	if (chip->mode & SPI_CS_HIGH)
-		ftssp010_cs_set(chip, 1);
-	else
-		ftssp010_cs_set(chip, 0);
-
-	/* chip enable + fifo clear */
-	setbits_le32(&regs->cr[2], CR2_EN | CR2_TXFC | CR2_RXFC);
-}
-
-/*
- * Deactivate a SPI chipselect.
- * This function is provided by the board code when using a driver
- * that can't control its chipselects automatically (e.g.
- * common/soft_spi.c). When called, it should deactivate the chip
- * select to the device identified by "slave".
- */
-void spi_cs_deactivate(struct spi_slave *slave)
-{
-	struct ftssp010_spi *chip = to_ftssp010_spi(slave);
-
-	/* wait until chip idle */
-	ftssp010_wait(chip);
-
-	/* cs pull */
-	if (chip->mode & SPI_CS_HIGH)
-		ftssp010_cs_set(chip, 0);
-	else
-		ftssp010_cs_set(chip, 1);
-}
-
-void spi_init(void)
-{
-	/* nothing to do */
-}
-
-struct spi_slave *spi_setup_slave(uint bus, uint cs, uint max_hz, uint mode)
-{
-	struct ftssp010_spi *chip;
-
-	if (mode & SPI_3WIRE) {
-		puts("ftssp010: can't do 3-wire\n");
-		return NULL;
-	}
-
-	if (mode & SPI_SLAVE) {
-		puts("ftssp010: can't do slave mode\n");
-		return NULL;
-	}
-
-	if (mode & SPI_PREAMBLE) {
-		puts("ftssp010: can't skip preamble bytes\n");
-		return NULL;
-	}
-
-	if (!spi_cs_is_valid(bus, cs)) {
-		puts("ftssp010: invalid (bus, cs)\n");
-		return NULL;
-	}
-
-	chip = spi_alloc_slave(struct ftssp010_spi, bus, cs);
-	if (!chip)
-		return NULL;
-
-	if (get_spi_chip(bus, chip))
-		goto free_out;
-
-	if (chip->revision < 0x11900 && get_spi_gpio(bus, &chip->gpio)) {
-		puts("ftssp010: Before revision 1.19.0, its clock & cs are\n"
-		"controlled by tx engine which is not synced with rx engine,\n"
-		"so the clock & cs might be shutdown before rx engine\n"
-		"finishs its jobs.\n"
-		"If possible, please add a dedicated gpio for it.\n");
-	}
-
-	chip->mode = mode;
-	chip->clk = CONFIG_FTSSP010_CLOCK;
-	chip->div = 2;
-	if (max_hz) {
-		while (chip->div < 0xffff) {
-			if ((chip->clk / (2 * chip->div)) <= max_hz)
-				break;
-			chip->div += 1;
-		}
-	}
-	chip->speed = chip->clk / (2 * chip->div);
-
-	return &chip->slave;
-
-free_out:
-	free(chip);
-	return NULL;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
-	struct ftssp010_spi *chip = to_ftssp010_spi(slave);
-
-	free(chip);
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
-	struct ftssp010_spi *chip = to_ftssp010_spi(slave);
-	struct ftssp010_regs *regs = chip->regs;
-
-	writel(CR1_SDL(8) | CR1_DIV(chip->div), &regs->cr[1]);
-
-	if (chip->revision >= 0x11900) {
-		writel(CR0_OPM_MASTER | CR0_FFMT_SPI | CR0_FSPO | CR0_FLASH,
-		       &regs->cr[0]);
-		writel(CR2_TXFC | CR2_RXFC,
-		       &regs->cr[2]);
-	} else {
-		writel(CR0_OPM_MASTER | CR0_FFMT_SPI | CR0_FSPO,
-		       &regs->cr[0]);
-		writel(CR2_TXFC | CR2_RXFC | CR2_EN | CR2_TXDOE,
-		       &regs->cr[2]);
-	}
-
-	if (chip->mode & SPI_LOOP)
-		setbits_le32(&regs->cr[0], CR0_LOOP);
-
-	if (chip->mode & SPI_CPOL)
-		setbits_le32(&regs->cr[0], CR0_SCLKPO);
-
-	if (chip->mode & SPI_CPHA)
-		setbits_le32(&regs->cr[0], CR0_SCLKPH);
-
-	spi_cs_deactivate(slave);
-
-	return 0;
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
-	struct ftssp010_spi *chip = to_ftssp010_spi(slave);
-	struct ftssp010_regs *regs = chip->regs;
-
-	writel(0, &regs->cr[2]);
-}
-
-int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
-			 const void *dout, void *din, unsigned long flags)
-{
-	struct ftssp010_spi *chip = to_ftssp010_spi(slave);
-	uint32_t len = bitlen >> 3;
-
-	if (flags & SPI_XFER_BEGIN)
-		spi_cs_activate(slave);
-
-	if (chip->revision >= 0x11900)
-		ftssp010_spi_work_transfer_v2(chip, dout, din, len, flags);
-	else
-		ftssp010_spi_work_transfer_v1(chip, dout, din, len, flags);
-
-	if (flags & SPI_XFER_END)
-		spi_cs_deactivate(slave);
-
-	return 0;
-}