From 3abf5ce6564e24a388b86caf1a00f91f4262b312 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 7 Mar 2016 17:56:53 +0000 Subject: ramips: convert the remaining subtargets to 4.4 Signed-off-by: Felix Fietkau SVN-Revision: 48954 --- ...0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch | 574 --------------------- 1 file changed, 574 deletions(-) delete mode 100644 target/linux/ramips/patches-4.3/0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch (limited to 'target/linux/ramips/patches-4.3/0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch') diff --git a/target/linux/ramips/patches-4.3/0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch b/target/linux/ramips/patches-4.3/0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch deleted file mode 100644 index 596bd83e5b..0000000000 --- a/target/linux/ramips/patches-4.3/0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch +++ /dev/null @@ -1,574 +0,0 @@ -From 683af4ebb91a1600df1946ac4769d916b8a1be65 Mon Sep 17 00:00:00 2001 -From: John Crispin -Date: Sun, 27 Jul 2014 11:15:12 +0100 -Subject: [PATCH 42/53] SPI: ralink: add Ralink SoC spi driver - -Add the driver needed to make SPI work on Ralink SoC. - -Signed-off-by: Gabor Juhos -Acked-by: John Crispin ---- - drivers/spi/Kconfig | 6 + - drivers/spi/Makefile | 1 + - drivers/spi/spi-rt2880.c | 530 ++++++++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 537 insertions(+) - create mode 100644 drivers/spi/spi-rt2880.c - ---- a/drivers/spi/Kconfig -+++ b/drivers/spi/Kconfig -@@ -466,6 +466,12 @@ config SPI_QUP - This driver can also be built as a module. If so, the module - will be called spi_qup. - -+config SPI_RT2880 -+ tristate "Ralink RT288x SPI Controller" -+ depends on RALINK -+ help -+ This selects a driver for the Ralink RT288x/RT305x SPI Controller. -+ - config SPI_S3C24XX - tristate "Samsung S3C24XX series SPI" - depends on ARCH_S3C24XX ---- a/drivers/spi/Makefile -+++ b/drivers/spi/Makefile -@@ -69,6 +69,7 @@ obj-$(CONFIG_SPI_QUP) += spi-qup.o - obj-$(CONFIG_SPI_ROCKCHIP) += spi-rockchip.o - obj-$(CONFIG_SPI_RB4XX) += spi-rb4xx.o - obj-$(CONFIG_SPI_RSPI) += spi-rspi.o -+obj-$(CONFIG_SPI_RT2880) += spi-rt2880.o - obj-$(CONFIG_SPI_S3C24XX) += spi-s3c24xx-hw.o - spi-s3c24xx-hw-y := spi-s3c24xx.o - spi-s3c24xx-hw-$(CONFIG_SPI_S3C24XX_FIQ) += spi-s3c24xx-fiq.o ---- /dev/null -+++ b/drivers/spi/spi-rt2880.c -@@ -0,0 +1,530 @@ -+/* -+ * spi-rt2880.c -- Ralink RT288x/RT305x SPI controller driver -+ * -+ * Copyright (C) 2011 Sergiy -+ * Copyright (C) 2011-2013 Gabor Juhos -+ * -+ * Some parts are based on spi-orion.c: -+ * Author: Shadi Ammouri -+ * Copyright (C) 2007-2008 Marvell Ltd. -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#define DRIVER_NAME "spi-rt2880" -+ -+#define RAMIPS_SPI_STAT 0x00 -+#define RAMIPS_SPI_CFG 0x10 -+#define RAMIPS_SPI_CTL 0x14 -+#define RAMIPS_SPI_DATA 0x20 -+#define RAMIPS_SPI_ADDR 0x24 -+#define RAMIPS_SPI_BS 0x28 -+#define RAMIPS_SPI_USER 0x2C -+#define RAMIPS_SPI_TXFIFO 0x30 -+#define RAMIPS_SPI_RXFIFO 0x34 -+#define RAMIPS_SPI_FIFO_STAT 0x38 -+#define RAMIPS_SPI_MODE 0x3C -+#define RAMIPS_SPI_DEV_OFFSET 0x40 -+#define RAMIPS_SPI_DMA 0x80 -+#define RAMIPS_SPI_DMASTAT 0x84 -+#define RAMIPS_SPI_ARBITER 0xF0 -+ -+/* SPISTAT register bit field */ -+#define SPISTAT_BUSY BIT(0) -+ -+/* SPICFG register bit field */ -+#define SPICFG_ADDRMODE BIT(12) -+#define SPICFG_RXENVDIS BIT(11) -+#define SPICFG_RXCAP BIT(10) -+#define SPICFG_SPIENMODE BIT(9) -+#define SPICFG_MSBFIRST BIT(8) -+#define SPICFG_SPICLKPOL BIT(6) -+#define SPICFG_RXCLKEDGE_FALLING BIT(5) -+#define SPICFG_TXCLKEDGE_FALLING BIT(4) -+#define SPICFG_HIZSPI BIT(3) -+#define SPICFG_SPICLK_PRESCALE_MASK 0x7 -+#define SPICFG_SPICLK_DIV2 0 -+#define SPICFG_SPICLK_DIV4 1 -+#define SPICFG_SPICLK_DIV8 2 -+#define SPICFG_SPICLK_DIV16 3 -+#define SPICFG_SPICLK_DIV32 4 -+#define SPICFG_SPICLK_DIV64 5 -+#define SPICFG_SPICLK_DIV128 6 -+#define SPICFG_SPICLK_DISABLE 7 -+ -+/* SPICTL register bit field */ -+#define SPICTL_START BIT(4) -+#define SPICTL_HIZSDO BIT(3) -+#define SPICTL_STARTWR BIT(2) -+#define SPICTL_STARTRD BIT(1) -+#define SPICTL_SPIENA BIT(0) -+ -+/* SPIUSER register bit field */ -+#define SPIUSER_USERMODE BIT(21) -+#define SPIUSER_INSTR_PHASE BIT(20) -+#define SPIUSER_ADDR_PHASE_MASK 0x7 -+#define SPIUSER_ADDR_PHASE_OFFSET 17 -+#define SPIUSER_MODE_PHASE BIT(16) -+#define SPIUSER_DUMMY_PHASE_MASK 0x3 -+#define SPIUSER_DUMMY_PHASE_OFFSET 14 -+#define SPIUSER_DATA_PHASE_MASK 0x3 -+#define SPIUSER_DATA_PHASE_OFFSET 12 -+#define SPIUSER_DATA_READ (BIT(0) << SPIUSER_DATA_PHASE_OFFSET) -+#define SPIUSER_DATA_WRITE (BIT(1) << SPIUSER_DATA_PHASE_OFFSET) -+#define SPIUSER_ADDR_TYPE_OFFSET 9 -+#define SPIUSER_MODE_TYPE_OFFSET 6 -+#define SPIUSER_DUMMY_TYPE_OFFSET 3 -+#define SPIUSER_DATA_TYPE_OFFSET 0 -+#define SPIUSER_TRANSFER_MASK 0x7 -+#define SPIUSER_TRANSFER_SINGLE BIT(0) -+#define SPIUSER_TRANSFER_DUAL BIT(1) -+#define SPIUSER_TRANSFER_QUAD BIT(2) -+ -+#define SPIUSER_TRANSFER_TYPE(type) ( \ -+ (type << SPIUSER_ADDR_TYPE_OFFSET) | \ -+ (type << SPIUSER_MODE_TYPE_OFFSET) | \ -+ (type << SPIUSER_DUMMY_TYPE_OFFSET) | \ -+ (type << SPIUSER_DATA_TYPE_OFFSET) \ -+) -+ -+/* SPIFIFOSTAT register bit field */ -+#define SPIFIFOSTAT_TXEMPTY BIT(19) -+#define SPIFIFOSTAT_RXEMPTY BIT(18) -+#define SPIFIFOSTAT_TXFULL BIT(17) -+#define SPIFIFOSTAT_RXFULL BIT(16) -+#define SPIFIFOSTAT_FIFO_MASK 0xff -+#define SPIFIFOSTAT_TX_OFFSET 8 -+#define SPIFIFOSTAT_RX_OFFSET 0 -+ -+#define SPI_FIFO_DEPTH 16 -+ -+/* SPIMODE register bit field */ -+#define SPIMODE_MODE_OFFSET 24 -+#define SPIMODE_DUMMY_OFFSET 0 -+ -+/* SPIARB register bit field */ -+#define SPICTL_ARB_EN BIT(31) -+#define SPICTL_CSCTL1 BIT(16) -+#define SPI1_POR BIT(1) -+#define SPI0_POR BIT(0) -+ -+#define RT2880_SPI_MODE_BITS (SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST | \ -+ SPI_CS_HIGH) -+ -+static atomic_t hw_reset_count = ATOMIC_INIT(0); -+ -+struct rt2880_spi { -+ struct spi_master *master; -+ void __iomem *base; -+ u32 speed; -+ u16 wait_loops; -+ u16 mode; -+ struct clk *clk; -+}; -+ -+static inline struct rt2880_spi *spidev_to_rt2880_spi(struct spi_device *spi) -+{ -+ return spi_master_get_devdata(spi->master); -+} -+ -+static inline u32 rt2880_spi_read(struct rt2880_spi *rs, u32 reg) -+{ -+ return ioread32(rs->base + reg); -+} -+ -+static inline void rt2880_spi_write(struct rt2880_spi *rs, u32 reg, -+ const u32 val) -+{ -+ iowrite32(val, rs->base + reg); -+} -+ -+static inline void rt2880_spi_setbits(struct rt2880_spi *rs, u32 reg, u32 mask) -+{ -+ void __iomem *addr = rs->base + reg; -+ -+ iowrite32((ioread32(addr) | mask), addr); -+} -+ -+static inline void rt2880_spi_clrbits(struct rt2880_spi *rs, u32 reg, u32 mask) -+{ -+ void __iomem *addr = rs->base + reg; -+ -+ iowrite32((ioread32(addr) & ~mask), addr); -+} -+ -+static u32 rt2880_spi_baudrate_get(struct spi_device *spi, unsigned int speed) -+{ -+ struct rt2880_spi *rs = spidev_to_rt2880_spi(spi); -+ u32 rate; -+ u32 prescale; -+ -+ /* -+ * the supported rates are: 2, 4, 8, ... 128 -+ * round up as we look for equal or less speed -+ */ -+ rate = DIV_ROUND_UP(clk_get_rate(rs->clk), speed); -+ rate = roundup_pow_of_two(rate); -+ -+ /* Convert the rate to SPI clock divisor value. */ -+ prescale = ilog2(rate / 2); -+ -+ /* some tolerance. double and add 100 */ -+ rs->wait_loops = (8 * HZ * loops_per_jiffy) / -+ (clk_get_rate(rs->clk) / rate); -+ rs->wait_loops = (rs->wait_loops << 1) + 100; -+ rs->speed = speed; -+ -+ dev_dbg(&spi->dev, "speed: %lu/%u, rate: %u, prescal: %u, loops: %hu\n", -+ clk_get_rate(rs->clk) / rate, speed, rate, prescale, -+ rs->wait_loops); -+ -+ return prescale; -+} -+ -+static u32 get_arbiter_offset(struct spi_master *master) -+{ -+ u32 offset; -+ -+ offset = RAMIPS_SPI_ARBITER; -+ if (master->bus_num == 1) -+ offset -= RAMIPS_SPI_DEV_OFFSET; -+ -+ return offset; -+} -+ -+static void rt2880_spi_set_cs(struct spi_device *spi, bool enable) -+{ -+ struct rt2880_spi *rs = spidev_to_rt2880_spi(spi); -+ -+ if (enable) -+ rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_SPIENA); -+ else -+ rt2880_spi_clrbits(rs, RAMIPS_SPI_CTL, SPICTL_SPIENA); -+} -+ -+static int rt2880_spi_wait_ready(struct rt2880_spi *rs, int len) -+{ -+ int loop = rs->wait_loops * len; -+ -+ while ((rt2880_spi_read(rs, RAMIPS_SPI_STAT) & SPISTAT_BUSY) && --loop) -+ cpu_relax(); -+ -+ if (loop) -+ return 0; -+ -+ return -ETIMEDOUT; -+} -+ -+static void rt2880_dump_reg(struct spi_master *master) -+{ -+ struct rt2880_spi *rs = spi_master_get_devdata(master); -+ -+ dev_dbg(&master->dev, "stat: %08x, cfg: %08x, ctl: %08x, " \ -+ "data: %08x, arb: %08x\n", -+ rt2880_spi_read(rs, RAMIPS_SPI_STAT), -+ rt2880_spi_read(rs, RAMIPS_SPI_CFG), -+ rt2880_spi_read(rs, RAMIPS_SPI_CTL), -+ rt2880_spi_read(rs, RAMIPS_SPI_DATA), -+ rt2880_spi_read(rs, get_arbiter_offset(master))); -+} -+ -+static int rt2880_spi_transfer_one(struct spi_master *master, -+ struct spi_device *spi, struct spi_transfer *xfer) -+{ -+ struct rt2880_spi *rs = spi_master_get_devdata(master); -+ unsigned len; -+ const u8 *tx = xfer->tx_buf; -+ u8 *rx = xfer->rx_buf; -+ int err = 0; -+ -+ /* change clock speed */ -+ if (unlikely(rs->speed != xfer->speed_hz)) { -+ u32 reg; -+ reg = rt2880_spi_read(rs, RAMIPS_SPI_CFG); -+ reg &= ~SPICFG_SPICLK_PRESCALE_MASK; -+ reg |= rt2880_spi_baudrate_get(spi, xfer->speed_hz); -+ rt2880_spi_write(rs, RAMIPS_SPI_CFG, reg); -+ } -+ -+ if (tx) { -+ len = xfer->len; -+ while (len-- > 0) { -+ rt2880_spi_write(rs, RAMIPS_SPI_DATA, *tx++); -+ rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_STARTWR); -+ err = rt2880_spi_wait_ready(rs, 1); -+ if (err) { -+ dev_err(&spi->dev, "TX failed, err=%d\n", err); -+ goto out; -+ } -+ } -+ } -+ -+ if (rx) { -+ len = xfer->len; -+ while (len-- > 0) { -+ rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_STARTRD); -+ err = rt2880_spi_wait_ready(rs, 1); -+ if (err) { -+ dev_err(&spi->dev, "RX failed, err=%d\n", err); -+ goto out; -+ } -+ *rx++ = (u8) rt2880_spi_read(rs, RAMIPS_SPI_DATA); -+ } -+ } -+ -+out: -+ return err; -+} -+ -+/* copy from spi.c */ -+static void spi_set_cs(struct spi_device *spi, bool enable) -+{ -+ if (spi->mode & SPI_CS_HIGH) -+ enable = !enable; -+ -+ if (spi->cs_gpio >= 0) -+ gpio_set_value(spi->cs_gpio, !enable); -+ else if (spi->master->set_cs) -+ spi->master->set_cs(spi, !enable); -+} -+ -+static int rt2880_spi_setup(struct spi_device *spi) -+{ -+ struct spi_master *master = spi->master; -+ struct rt2880_spi *rs = spi_master_get_devdata(master); -+ u32 reg, old_reg, arbit_off; -+ -+ if ((spi->max_speed_hz > master->max_speed_hz) || -+ (spi->max_speed_hz < master->min_speed_hz)) { -+ dev_err(&spi->dev, "invalide requested speed %d Hz\n", -+ spi->max_speed_hz); -+ return -EINVAL; -+ } -+ -+ if (!(master->bits_per_word_mask & -+ BIT(spi->bits_per_word - 1))) { -+ dev_err(&spi->dev, "invalide bits_per_word %d\n", -+ spi->bits_per_word); -+ return -EINVAL; -+ } -+ -+ /* the hardware seems can't work on mode0 force it to mode3 */ -+ if ((spi->mode & (SPI_CPOL | SPI_CPHA)) == SPI_MODE_0) { -+ dev_warn(&spi->dev, "force spi mode3\n"); -+ spi->mode |= SPI_MODE_3; -+ } -+ -+ /* chip polarity */ -+ arbit_off = get_arbiter_offset(master); -+ reg = old_reg = rt2880_spi_read(rs, arbit_off); -+ if (spi->mode & SPI_CS_HIGH) { -+ switch (master->bus_num) { -+ case 1: -+ reg |= SPI1_POR; -+ break; -+ default: -+ reg |= SPI0_POR; -+ break; -+ } -+ } else { -+ switch (master->bus_num) { -+ case 1: -+ reg &= ~SPI1_POR; -+ break; -+ default: -+ reg &= ~SPI0_POR; -+ break; -+ } -+ } -+ -+ /* enable spi1 */ -+ if (master->bus_num == 1) -+ reg |= SPICTL_ARB_EN; -+ -+ if (reg != old_reg) -+ rt2880_spi_write(rs, arbit_off, reg); -+ -+ /* deselected the spi device */ -+ spi_set_cs(spi, false); -+ -+ rt2880_dump_reg(master); -+ -+ return 0; -+} -+ -+static int rt2880_spi_prepare_message(struct spi_master *master, -+ struct spi_message *msg) -+{ -+ struct rt2880_spi *rs = spi_master_get_devdata(master); -+ struct spi_device *spi = msg->spi; -+ u32 reg; -+ -+ if ((rs->mode == spi->mode) && (rs->speed == spi->max_speed_hz)) -+ return 0; -+ -+#if 0 -+ /* set spido to tri-state */ -+ rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_HIZSDO); -+#endif -+ -+ reg = rt2880_spi_read(rs, RAMIPS_SPI_CFG); -+ -+ reg &= ~(SPICFG_MSBFIRST | SPICFG_SPICLKPOL | -+ SPICFG_RXCLKEDGE_FALLING | -+ SPICFG_TXCLKEDGE_FALLING | -+ SPICFG_SPICLK_PRESCALE_MASK); -+ -+ /* MSB */ -+ if (!(spi->mode & SPI_LSB_FIRST)) -+ reg |= SPICFG_MSBFIRST; -+ -+ /* spi mode */ -+ switch (spi->mode & (SPI_CPOL | SPI_CPHA)) { -+ case SPI_MODE_0: -+ reg |= SPICFG_TXCLKEDGE_FALLING; -+ break; -+ case SPI_MODE_1: -+ reg |= SPICFG_RXCLKEDGE_FALLING; -+ break; -+ case SPI_MODE_2: -+ reg |= SPICFG_SPICLKPOL | SPICFG_RXCLKEDGE_FALLING; -+ break; -+ case SPI_MODE_3: -+ reg |= SPICFG_SPICLKPOL | SPICFG_TXCLKEDGE_FALLING; -+ break; -+ } -+ rs->mode = spi->mode; -+ -+#if 0 -+ /* set spiclk and spiena to tri-state */ -+ reg |= SPICFG_HIZSPI; -+#endif -+ -+ /* clock divide */ -+ reg |= rt2880_spi_baudrate_get(spi, spi->max_speed_hz); -+ -+ rt2880_spi_write(rs, RAMIPS_SPI_CFG, reg); -+ -+ return 0; -+} -+ -+static int rt2880_spi_probe(struct platform_device *pdev) -+{ -+ struct spi_master *master; -+ struct rt2880_spi *rs; -+ void __iomem *base; -+ struct resource *r; -+ struct clk *clk; -+ int ret; -+ -+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ base = devm_ioremap_resource(&pdev->dev, r); -+ if (IS_ERR(base)) -+ return PTR_ERR(base); -+ -+ clk = devm_clk_get(&pdev->dev, NULL); -+ if (IS_ERR(clk)) { -+ dev_err(&pdev->dev, "unable to get SYS clock\n"); -+ return PTR_ERR(clk); -+ } -+ -+ ret = clk_prepare_enable(clk); -+ if (ret) -+ goto err_clk; -+ -+ master = spi_alloc_master(&pdev->dev, sizeof(*rs)); -+ if (master == NULL) { -+ dev_dbg(&pdev->dev, "master allocation failed\n"); -+ ret = -ENOMEM; -+ goto err_clk; -+ } -+ -+ master->dev.of_node = pdev->dev.of_node; -+ master->mode_bits = RT2880_SPI_MODE_BITS; -+ master->bits_per_word_mask = SPI_BPW_MASK(8); -+ master->min_speed_hz = clk_get_rate(clk) / 128; -+ master->max_speed_hz = clk_get_rate(clk) / 2; -+ master->flags = SPI_MASTER_HALF_DUPLEX; -+ master->setup = rt2880_spi_setup; -+ master->prepare_message = rt2880_spi_prepare_message; -+ master->set_cs = rt2880_spi_set_cs; -+ master->transfer_one = rt2880_spi_transfer_one, -+ -+ dev_set_drvdata(&pdev->dev, master); -+ -+ rs = spi_master_get_devdata(master); -+ rs->master = master; -+ rs->base = base; -+ rs->clk = clk; -+ -+ if (atomic_inc_return(&hw_reset_count) == 1) -+ device_reset(&pdev->dev); -+ -+ ret = devm_spi_register_master(&pdev->dev, master); -+ if (ret < 0) { -+ dev_err(&pdev->dev, "devm_spi_register_master error.\n"); -+ goto err_master; -+ } -+ -+ return ret; -+ -+err_master: -+ spi_master_put(master); -+ kfree(master); -+err_clk: -+ clk_disable_unprepare(clk); -+ -+ return ret; -+} -+ -+static int rt2880_spi_remove(struct platform_device *pdev) -+{ -+ struct spi_master *master; -+ struct rt2880_spi *rs; -+ -+ master = dev_get_drvdata(&pdev->dev); -+ rs = spi_master_get_devdata(master); -+ -+ clk_disable_unprepare(rs->clk); -+ atomic_dec(&hw_reset_count); -+ -+ return 0; -+} -+ -+MODULE_ALIAS("platform:" DRIVER_NAME); -+ -+static const struct of_device_id rt2880_spi_match[] = { -+ { .compatible = "ralink,rt2880-spi" }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, rt2880_spi_match); -+ -+static struct platform_driver rt2880_spi_driver = { -+ .driver = { -+ .name = DRIVER_NAME, -+ .owner = THIS_MODULE, -+ .of_match_table = rt2880_spi_match, -+ }, -+ .probe = rt2880_spi_probe, -+ .remove = rt2880_spi_remove, -+}; -+ -+module_platform_driver(rt2880_spi_driver); -+ -+MODULE_DESCRIPTION("Ralink SPI driver"); -+MODULE_AUTHOR("Sergiy "); -+MODULE_AUTHOR("Gabor Juhos "); -+MODULE_LICENSE("GPL"); -- cgit v1.2.3