From e8db47db7b6562db7d05ee83dd421752a2d2ce57 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Sun, 22 Nov 2015 11:49:13 +0000 Subject: ramips: update dtsi files to support second spi device Signed-off-by: Michael Lee git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47580 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../0051-rt5350-spi-second-device.patch | 368 --------------------- 1 file changed, 368 deletions(-) delete mode 100644 target/linux/ramips/patches-3.18/0051-rt5350-spi-second-device.patch (limited to 'target/linux/ramips/patches-3.18') diff --git a/target/linux/ramips/patches-3.18/0051-rt5350-spi-second-device.patch b/target/linux/ramips/patches-3.18/0051-rt5350-spi-second-device.patch deleted file mode 100644 index 2da815136a..0000000000 --- a/target/linux/ramips/patches-3.18/0051-rt5350-spi-second-device.patch +++ /dev/null @@ -1,368 +0,0 @@ -From 27b11d4f1888e1a3d6d75b46d4d5a4d86fc03891 Mon Sep 17 00:00:00 2001 -From: John Crispin -Date: Wed, 6 Aug 2014 10:53:40 +0200 -Subject: [PATCH 51/57] SPI: MIPS: ralink: add rt5350 dual SPI support - -Signed-off-by: John Crispin -Signed-off-by: Felix Fietkau ---- - drivers/spi/spi-rt2880.c | 218 +++++++++++++++++++++++++++++++++++++++++++--- - 1 file changed, 205 insertions(+), 13 deletions(-) - ---- a/drivers/spi/spi-rt2880.c -+++ b/drivers/spi/spi-rt2880.c -@@ -21,19 +21,25 @@ - #include - #include - #include -+#include - #include - -+#include -+ -+#define SPI_BPW_MASK(bits) BIT((bits) - 1) -+ - #define DRIVER_NAME "spi-rt2880" --/* only one slave is supported*/ --#define RALINK_NUM_CHIPSELECTS 1 - /* in usec */ - #define RALINK_SPI_WAIT_MAX_LOOP 2000 - --#define RAMIPS_SPI_STAT 0x00 --#define RAMIPS_SPI_CFG 0x10 --#define RAMIPS_SPI_CTL 0x14 --#define RAMIPS_SPI_DATA 0x20 --#define RAMIPS_SPI_FIFO_STAT 0x38 -+#define RAMIPS_SPI_DEV_OFFSET 0x40 -+ -+#define RAMIPS_SPI_STAT(cs) (0x00 + (cs * RAMIPS_SPI_DEV_OFFSET)) -+#define RAMIPS_SPI_CFG(cs) (0x10 + (cs * RAMIPS_SPI_DEV_OFFSET)) -+#define RAMIPS_SPI_CTL(cs) (0x14 + (cs * RAMIPS_SPI_DEV_OFFSET)) -+#define RAMIPS_SPI_DATA(cs) (0x20 + (cs * RAMIPS_SPI_DEV_OFFSET)) -+#define RAMIPS_SPI_FIFO_STAT(cs) (0x38 + (cs * RAMIPS_SPI_DEV_OFFSET)) -+#define RAMIPS_SPI_ARBITER 0xF0 - - /* SPISTAT register bit field */ - #define SPISTAT_BUSY BIT(0) -@@ -63,6 +69,19 @@ - /* SPIFIFOSTAT register bit field */ - #define SPIFIFOSTAT_TXFULL BIT(17) - -+#define SPICTL_ARB_EN BIT(31) -+#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) -+ -+struct rt2880_spi; -+ -+struct rt2880_spi_ops { -+ void (*init_hw)(struct rt2880_spi *rs); -+ int num_cs; -+}; -+ - struct rt2880_spi { - struct spi_master *master; - void __iomem *base; -@@ -70,6 +89,8 @@ struct rt2880_spi { - unsigned int speed; - struct clk *clk; - spinlock_t lock; -+ -+ struct rt2880_spi_ops *ops; - }; - - static inline struct rt2880_spi *spidev_to_rt2880_spi(struct spi_device *spi) -@@ -115,6 +136,7 @@ static inline void rt2880_spi_clrbits(st - - static int rt2880_spi_baudrate_set(struct spi_device *spi, unsigned int speed) - { -+ int cs = spi->chip_select; - struct rt2880_spi *rs = spidev_to_rt2880_spi(spi); - u32 rate; - u32 prescale; -@@ -142,9 +164,9 @@ static int rt2880_spi_baudrate_set(struc - prescale = ilog2(rate / 2); - dev_dbg(&spi->dev, "prescale:%u\n", prescale); - -- reg = rt2880_spi_read(rs, RAMIPS_SPI_CFG); -+ reg = rt2880_spi_read(rs, RAMIPS_SPI_CFG(cs)); - reg = ((reg & ~SPICFG_SPICLK_PRESCALE_MASK) | prescale); -- rt2880_spi_write(rs, RAMIPS_SPI_CFG, reg); -+ rt2880_spi_write(rs, RAMIPS_SPI_CFG(cs), reg); - rs->speed = speed; - return 0; - } -@@ -157,7 +179,8 @@ rt2880_spi_setup_transfer(struct spi_dev - { - struct rt2880_spi *rs = spidev_to_rt2880_spi(spi); - unsigned int speed = spi->max_speed_hz; -- int rc; -+ int rc, cs = spi->chip_select; -+ u32 reg; - - if ((t != NULL) && t->speed_hz) - speed = t->speed_hz; -@@ -169,25 +192,68 @@ rt2880_spi_setup_transfer(struct spi_dev - return rc; - } - -+ reg = rt2880_spi_read(rs, RAMIPS_SPI_CFG(cs)); -+ -+ reg = (reg & ~SPICFG_MSBFIRST); -+ if (!(spi->mode & SPI_LSB_FIRST)) -+ reg |= SPICFG_MSBFIRST; -+ -+ reg = (reg & ~(SPICFG_SPICLKPOL | SPICFG_RXCLKEDGE_FALLING |SPICFG_TXCLKEDGE_FALLING)); -+ switch(spi->mode & (SPI_CPOL | SPI_CPHA)) { -+ case SPI_MODE_0: -+ reg |= SPICFG_SPICLKPOL | SPICFG_TXCLKEDGE_FALLING; -+ break; -+ case SPI_MODE_1: -+ reg |= SPICFG_SPICLKPOL | SPICFG_RXCLKEDGE_FALLING; -+ break; -+ case SPI_MODE_2: -+ reg |= SPICFG_RXCLKEDGE_FALLING; -+ break; -+ case SPI_MODE_3: -+ reg |= SPICFG_TXCLKEDGE_FALLING; -+ break; -+ } -+ -+ rt2880_spi_write(rs, RAMIPS_SPI_CFG(cs), reg); -+ -+ reg = SPICTL_ARB_EN; -+ if (spi->mode & SPI_CS_HIGH) { -+ switch(cs) { -+ case 0: -+ reg |= SPI0_POR; -+ break; -+ case 1: -+ reg |= SPI1_POR; -+ break; -+ } -+ } -+ -+ rt2880_spi_write(rs, RAMIPS_SPI_ARBITER, reg); -+ - return 0; - } - --static void rt2880_spi_set_cs(struct rt2880_spi *rs, int enable) -+static void rt2880_spi_set_cs(struct spi_device *spi, int enable) - { -+ struct rt2880_spi *rs = spidev_to_rt2880_spi(spi); -+ int cs = spi->chip_select; -+ - if (enable) -- rt2880_spi_clrbits(rs, RAMIPS_SPI_CTL, SPICTL_SPIENA); -+ rt2880_spi_clrbits(rs, RAMIPS_SPI_CTL(cs), SPICTL_SPIENA); - else -- rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_SPIENA); -+ rt2880_spi_setbits(rs, RAMIPS_SPI_CTL(cs), SPICTL_SPIENA); - } - --static inline int rt2880_spi_wait_till_ready(struct rt2880_spi *rs) -+static inline int rt2880_spi_wait_till_ready(struct spi_device *spi) - { -+ struct rt2880_spi *rs = spidev_to_rt2880_spi(spi); -+ int cs = spi->chip_select; - int i; - - for (i = 0; i < RALINK_SPI_WAIT_MAX_LOOP; i++) { - u32 status; - -- status = rt2880_spi_read(rs, RAMIPS_SPI_STAT); -+ status = rt2880_spi_read(rs, RAMIPS_SPI_STAT(cs)); - if ((status & SPISTAT_BUSY) == 0) - return 0; - -@@ -199,9 +265,10 @@ static inline int rt2880_spi_wait_till_r - } - - static unsigned int --rt2880_spi_write_read(struct spi_device *spi, struct spi_transfer *xfer) -+rt2880_spi_write_read(struct spi_device *spi, struct list_head *list, struct spi_transfer *xfer) - { - struct rt2880_spi *rs = spidev_to_rt2880_spi(spi); -+ int cs = spi->chip_select; - unsigned count = 0; - u8 *rx = xfer->rx_buf; - const u8 *tx = xfer->tx_buf; -@@ -213,9 +280,9 @@ rt2880_spi_write_read(struct spi_device - - if (tx) { - for (count = 0; count < xfer->len; count++) { -- rt2880_spi_write(rs, RAMIPS_SPI_DATA, tx[count]); -- rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_STARTWR); -- err = rt2880_spi_wait_till_ready(rs); -+ rt2880_spi_write(rs, RAMIPS_SPI_DATA(cs), tx[count]); -+ rt2880_spi_setbits(rs, RAMIPS_SPI_CTL(cs), SPICTL_STARTWR); -+ err = rt2880_spi_wait_till_ready(spi); - if (err) { - dev_err(&spi->dev, "TX failed, err=%d\n", err); - goto out; -@@ -225,13 +292,13 @@ rt2880_spi_write_read(struct spi_device - - if (rx) { - for (count = 0; count < xfer->len; count++) { -- rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_STARTRD); -- err = rt2880_spi_wait_till_ready(rs); -+ rt2880_spi_setbits(rs, RAMIPS_SPI_CTL(cs), SPICTL_STARTRD); -+ err = rt2880_spi_wait_till_ready(spi); - if (err) { - dev_err(&spi->dev, "RX failed, err=%d\n", err); - goto out; - } -- rx[count] = (u8) rt2880_spi_read(rs, RAMIPS_SPI_DATA); -+ rx[count] = (u8) rt2880_spi_read(rs, RAMIPS_SPI_DATA(cs)); - } - } - -@@ -280,25 +347,25 @@ static int rt2880_spi_transfer_one_messa - } - - if (!cs_active) { -- rt2880_spi_set_cs(rs, 1); -+ rt2880_spi_set_cs(spi, 1); - cs_active = 1; - } - - if (t->len) -- m->actual_length += rt2880_spi_write_read(spi, t); -+ m->actual_length += rt2880_spi_write_read(spi, &m->transfers, t); - - if (t->delay_usecs) - udelay(t->delay_usecs); - - if (t->cs_change) { -- rt2880_spi_set_cs(rs, 0); -+ rt2880_spi_set_cs(spi, 0); - cs_active = 0; - } - } - - msg_done: - if (cs_active) -- rt2880_spi_set_cs(rs, 0); -+ rt2880_spi_set_cs(spi, 0); - - m->status = status; - spi_finalize_current_message(master); -@@ -311,7 +378,7 @@ static int rt2880_spi_setup(struct spi_d - struct rt2880_spi *rs = spidev_to_rt2880_spi(spi); - - if ((spi->max_speed_hz == 0) || -- (spi->max_speed_hz > (rs->sys_freq / 2))) -+ (spi->max_speed_hz > (rs->sys_freq / 2))) - spi->max_speed_hz = (rs->sys_freq / 2); - - if (spi->max_speed_hz < (rs->sys_freq / 128)) { -@@ -328,14 +395,47 @@ static int rt2880_spi_setup(struct spi_d - - static void rt2880_spi_reset(struct rt2880_spi *rs) - { -- rt2880_spi_write(rs, RAMIPS_SPI_CFG, -+ rt2880_spi_write(rs, RAMIPS_SPI_CFG(0), - SPICFG_MSBFIRST | SPICFG_TXCLKEDGE_FALLING | - SPICFG_SPICLK_DIV16 | SPICFG_SPICLKPOL); -- rt2880_spi_write(rs, RAMIPS_SPI_CTL, SPICTL_HIZSDO | SPICTL_SPIENA); -+ rt2880_spi_write(rs, RAMIPS_SPI_CTL(0), SPICTL_HIZSDO | SPICTL_SPIENA); - } - -+static void rt5350_spi_reset(struct rt2880_spi *rs) -+{ -+ int cs; -+ -+ rt2880_spi_write(rs, RAMIPS_SPI_ARBITER, -+ SPICTL_ARB_EN); -+ -+ for (cs = 0; cs < rs->ops->num_cs; cs++) { -+ rt2880_spi_write(rs, RAMIPS_SPI_CFG(cs), -+ SPICFG_MSBFIRST | SPICFG_TXCLKEDGE_FALLING | -+ SPICFG_SPICLK_DIV16 | SPICFG_SPICLKPOL); -+ rt2880_spi_write(rs, RAMIPS_SPI_CTL(cs), SPICTL_HIZSDO | SPICTL_SPIENA); -+ } -+} -+ -+static struct rt2880_spi_ops spi_ops[] = { -+ { -+ .init_hw = rt2880_spi_reset, -+ .num_cs = 1, -+ }, { -+ .init_hw = rt5350_spi_reset, -+ .num_cs = 2, -+ }, -+}; -+ -+static const struct of_device_id rt2880_spi_match[] = { -+ { .compatible = "ralink,rt2880-spi", .data = &spi_ops[0]}, -+ { .compatible = "ralink,rt5350-spi", .data = &spi_ops[1]}, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, rt2880_spi_match); -+ - static int rt2880_spi_probe(struct platform_device *pdev) - { -+ const struct of_device_id *match; - struct spi_master *master; - struct rt2880_spi *rs; - unsigned long flags; -@@ -343,6 +443,12 @@ static int rt2880_spi_probe(struct platf - struct resource *r; - int status = 0; - struct clk *clk; -+ struct rt2880_spi_ops *ops; -+ -+ match = of_match_device(rt2880_spi_match, &pdev->dev); -+ if (!match) -+ return -EINVAL; -+ ops = (struct rt2880_spi_ops *)match->data; - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - base = devm_ioremap_resource(&pdev->dev, r); -@@ -366,14 +472,13 @@ static int rt2880_spi_probe(struct platf - return -ENOMEM; - } - -- /* we support only mode 0, and no options */ -- master->mode_bits = 0; -+ master->mode_bits = RT2880_SPI_MODE_BITS; - - master->setup = rt2880_spi_setup; - master->transfer_one_message = rt2880_spi_transfer_one_message; -- master->num_chipselect = RALINK_NUM_CHIPSELECTS; - master->bits_per_word_mask = SPI_BPW_MASK(8); - master->dev.of_node = pdev->dev.of_node; -+ master->num_chipselect = ops->num_cs; - - dev_set_drvdata(&pdev->dev, master); - -@@ -382,12 +487,13 @@ static int rt2880_spi_probe(struct platf - rs->clk = clk; - rs->master = master; - rs->sys_freq = clk_get_rate(rs->clk); -+ rs->ops = ops; - dev_dbg(&pdev->dev, "sys_freq: %u\n", rs->sys_freq); - spin_lock_irqsave(&rs->lock, flags); - - device_reset(&pdev->dev); - -- rt2880_spi_reset(rs); -+ rs->ops->init_hw(rs); - - return spi_register_master(master); - } -@@ -408,12 +514,6 @@ static int rt2880_spi_remove(struct plat - - 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, -- cgit v1.2.3