ramips: update dtsi files to support second spi device

Signed-off-by: Michael Lee <igvtee@gmail.com>

SVN-Revision: 47580

1 files changed, 0 insertions, 368 deletions

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 <blogic@openwrt.org>
-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 <blogic@openwrt.org>
-Signed-off-by: Felix Fietkau <nbd@openwrt.org>
----
- 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 <linux/io.h>
- #include <linux/reset.h>
- #include <linux/spi/spi.h>
-+#include <linux/of_device.h>
- #include <linux/platform_device.h>
- 
-+#include <ralink_regs.h>
-+
-+#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,