# CONFIG_SOC_RT3883 is not set
CONFIG_SPI=y
CONFIG_SPI_MASTER=y
+# CONFIG_SPI_MT7621 is not set
CONFIG_SPI_RT2880=y
CONFIG_SWCONFIG=y
CONFIG_SYS_HAS_CPU_MIPS32_R1=y
# CONFIG_SOC_RT3883 is not set
CONFIG_SPI=y
CONFIG_SPI_MASTER=y
-CONFIG_SPI_RT2880=y
+CONFIG_SPI_MT7621=y
+# CONFIG_SPI_RT2880 is not set
CONFIG_STOP_MACHINE=y
CONFIG_SWCONFIG=y
CONFIG_SYNC_R4K=y
# CONFIG_SOC_RT3883 is not set
CONFIG_SPI=y
CONFIG_SPI_MASTER=y
-CONFIG_SPI_RT2880=y
+CONFIG_SPI_MT7621=y
+# CONFIG_SPI_RT2880 is not set
CONFIG_SWCONFIG=y
CONFIG_SYS_HAS_CPU_MIPS32_R1=y
CONFIG_SYS_HAS_CPU_MIPS32_R2=y
+++ /dev/null
-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 mt7621 support
-
-Signed-off-by: John Crispin <blogic@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
-@@ -21,8 +21,13 @@
- #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
-@@ -63,6 +68,25 @@
- /* SPIFIFOSTAT register bit field */
- #define SPIFIFOSTAT_TXFULL BIT(17)
-
-+#define MT7621_SPI_TRANS 0x00
-+#define SPITRANS_BUSY BIT(16)
-+#define MT7621_SPI_OPCODE 0x04
-+#define MT7621_SPI_DATA0 0x08
-+#define SPI_CTL_TX_RX_CNT_MASK 0xff
-+#define SPI_CTL_START BIT(8)
-+#define MT7621_SPI_POLAR 0x38
-+#define MT7621_SPI_MASTER 0x28
-+#define MT7621_SPI_SPACE 0x3c
-+
-+struct rt2880_spi;
-+
-+struct rt2880_spi_ops {
-+ void (*init_hw)(struct rt2880_spi *rs);
-+ void (*set_cs)(struct rt2880_spi *rs, int enable);
-+ int (*baudrate_set)(struct spi_device *spi, unsigned int speed);
-+ unsigned int (*write_read)(struct spi_device *spi, struct list_head *list, struct spi_transfer *xfer);
-+};
-+
- struct rt2880_spi {
- struct spi_master *master;
- void __iomem *base;
-@@ -70,6 +94,8 @@ 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)
-@@ -149,6 +175,17 @@ static int rt2880_spi_baudrate_set(struc
- return 0;
- }
-
-+static int mt7621_spi_baudrate_set(struct spi_device *spi, unsigned int speed)
-+{
-+/* u32 master = rt2880_spi_read(rs, MT7621_SPI_MASTER);
-+
-+ // set default clock to hclk/5
-+ master &= ~(0xfff << 16);
-+ master |= 0x3 << 16;
-+*/
-+ return 0;
-+}
-+
- /*
- * called only when no transfer is active on the bus
- */
-@@ -164,7 +201,7 @@ rt2880_spi_setup_transfer(struct spi_dev
-
- if (rs->speed != speed) {
- dev_dbg(&spi->dev, "speed_hz:%u\n", speed);
-- rc = rt2880_spi_baudrate_set(spi, speed);
-+ rc = rs->ops->baudrate_set(spi, speed);
- if (rc)
- return rc;
- }
-@@ -180,6 +217,17 @@ static void rt2880_spi_set_cs(struct rt2
- rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_SPIENA);
- }
-
-+static void mt7621_spi_set_cs(struct rt2880_spi *rs, int enable)
-+{
-+ u32 polar = rt2880_spi_read(rs, MT7621_SPI_POLAR);
-+
-+ if (enable)
-+ polar |= 1;
-+ else
-+ polar &= ~1;
-+ rt2880_spi_write(rs, MT7621_SPI_POLAR, polar);
-+}
-+
- static inline int rt2880_spi_wait_till_ready(struct rt2880_spi *rs)
- {
- int i;
-@@ -198,8 +246,26 @@ static inline int rt2880_spi_wait_till_r
- return -ETIMEDOUT;
- }
-
-+static inline int mt7621_spi_wait_till_ready(struct rt2880_spi *rs)
-+{
-+ int i;
-+
-+ for (i = 0; i < RALINK_SPI_WAIT_MAX_LOOP; i++) {
-+ u32 status;
-+
-+ status = rt2880_spi_read(rs, MT7621_SPI_TRANS);
-+ if ((status & SPITRANS_BUSY) == 0) {
-+ return 0;
-+ }
-+ cpu_relax();
-+ udelay(1);
-+ }
-+
-+ return -ETIMEDOUT;
-+}
-+
- 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);
- unsigned count = 0;
-@@ -239,6 +305,100 @@ out:
- return count;
- }
-
-+static unsigned int
-+mt7621_spi_write_read(struct spi_device *spi, struct list_head *list, struct spi_transfer *xfer)
-+{
-+ struct rt2880_spi *rs = spidev_to_rt2880_spi(spi);
-+ struct spi_transfer *next = NULL;
-+ const u8 *tx = xfer->tx_buf;
-+ u8 *rx = NULL;
-+ u32 trans;
-+ int len = xfer->len;
-+
-+ if (!tx)
-+ return 0;
-+
-+ if (!list_is_last(&xfer->transfer_list, list)) {
-+ next = list_entry(xfer->transfer_list.next, struct spi_transfer, transfer_list);
-+ rx = next->rx_buf;
-+ }
-+
-+ trans = rt2880_spi_read(rs, MT7621_SPI_TRANS);
-+ trans &= ~SPI_CTL_TX_RX_CNT_MASK;
-+
-+ if (tx) {
-+ u32 data0 = 0, opcode = 0;
-+
-+ switch (xfer->len) {
-+ case 8:
-+ data0 |= tx[7] << 24;
-+ case 7:
-+ data0 |= tx[6] << 16;
-+ case 6:
-+ data0 |= tx[5] << 8;
-+ case 5:
-+ data0 |= tx[4];
-+ case 4:
-+ opcode |= tx[3] << 8;
-+ case 3:
-+ opcode |= tx[2] << 16;
-+ case 2:
-+ opcode |= tx[1] << 24;
-+ case 1:
-+ opcode |= tx[0];
-+ break;
-+
-+ default:
-+ dev_err(&spi->dev, "trying to write too many bytes: %d\n", next->len);
-+ return -EINVAL;
-+ }
-+
-+ rt2880_spi_write(rs, MT7621_SPI_DATA0, data0);
-+ rt2880_spi_write(rs, MT7621_SPI_OPCODE, opcode);
-+ trans |= xfer->len;
-+ }
-+
-+ if (rx)
-+ trans |= (next->len << 4);
-+ rt2880_spi_write(rs, MT7621_SPI_TRANS, trans);
-+ trans |= SPI_CTL_START;
-+ rt2880_spi_write(rs, MT7621_SPI_TRANS, trans);
-+
-+ mt7621_spi_wait_till_ready(rs);
-+
-+ if (rx) {
-+ u32 data0 = rt2880_spi_read(rs, MT7621_SPI_DATA0);
-+ u32 opcode = rt2880_spi_read(rs, MT7621_SPI_OPCODE);
-+
-+ switch (next->len) {
-+ case 8:
-+ rx[7] = (opcode >> 24) & 0xff;
-+ case 7:
-+ rx[6] = (opcode >> 16) & 0xff;
-+ case 6:
-+ rx[5] = (opcode >> 8) & 0xff;
-+ case 5:
-+ rx[4] = opcode & 0xff;
-+ case 4:
-+ rx[3] = (data0 >> 24) & 0xff;
-+ case 3:
-+ rx[2] = (data0 >> 16) & 0xff;
-+ case 2:
-+ rx[1] = (data0 >> 8) & 0xff;
-+ case 1:
-+ rx[0] = data0 & 0xff;
-+ break;
-+
-+ default:
-+ dev_err(&spi->dev, "trying to read too many bytes: %d\n", next->len);
-+ return -EINVAL;
-+ }
-+ len += next->len;
-+ }
-+
-+ return len;
-+}
-+
- static int rt2880_spi_transfer_one_message(struct spi_master *master,
- struct spi_message *m)
- {
-@@ -280,25 +440,25 @@ static int rt2880_spi_transfer_one_messa
- }
-
- if (!cs_active) {
-- rt2880_spi_set_cs(rs, 1);
-+ rs->ops->set_cs(rs, 1);
- cs_active = 1;
- }
-
- if (t->len)
-- m->actual_length += rt2880_spi_write_read(spi, t);
-+ m->actual_length += rs->ops->write_read(spi, &m->transfers, t);
-
- if (t->delay_usecs)
- udelay(t->delay_usecs);
-
- if (t->cs_change) {
-- rt2880_spi_set_cs(rs, 0);
-+ rs->ops->set_cs(rs, 0);
- cs_active = 0;
- }
- }
-
- msg_done:
- if (cs_active)
-- rt2880_spi_set_cs(rs, 0);
-+ rs->ops->set_cs(rs, 0);
-
- m->status = status;
- spi_finalize_current_message(master);
-@@ -334,8 +494,41 @@ static void rt2880_spi_reset(struct rt28
- rt2880_spi_write(rs, RAMIPS_SPI_CTL, SPICTL_HIZSDO | SPICTL_SPIENA);
- }
-
-+static void mt7621_spi_reset(struct rt2880_spi *rs)
-+{
-+ u32 master = rt2880_spi_read(rs, MT7621_SPI_MASTER);
-+
-+ master &= ~(0xfff << 16);
-+ master |= 3 << 16;
-+
-+ master |= 7 << 29;
-+ rt2880_spi_write(rs, MT7621_SPI_MASTER, master);
-+}
-+
-+static struct rt2880_spi_ops spi_ops[] = {
-+ {
-+ .init_hw = rt2880_spi_reset,
-+ .set_cs = rt2880_spi_set_cs,
-+ .baudrate_set = rt2880_spi_baudrate_set,
-+ .write_read = rt2880_spi_write_read,
-+ }, {
-+ .init_hw = mt7621_spi_reset,
-+ .set_cs = mt7621_spi_set_cs,
-+ .baudrate_set = mt7621_spi_baudrate_set,
-+ .write_read = mt7621_spi_write_read,
-+ },
-+};
-+
-+static const struct of_device_id rt2880_spi_match[] = {
-+ { .compatible = "ralink,rt2880-spi", .data = &spi_ops[0]},
-+ { .compatible = "ralink,mt7621-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;
-@@ -344,6 +537,10 @@ static int rt2880_spi_probe(struct platf
- int status = 0;
- struct clk *clk;
-
-+ match = of_match_device(rt2880_spi_match, &pdev->dev);
-+ if (!match)
-+ return -EINVAL;
-+
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- base = devm_ioremap_resource(&pdev->dev, r);
- if (IS_ERR(base))
-@@ -382,12 +579,13 @@ static int rt2880_spi_probe(struct platf
- rs->clk = clk;
- rs->master = master;
- rs->sys_freq = clk_get_rate(rs->clk);
-+ rs->ops = (struct rt2880_spi_ops *) match->data;
- 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 +606,6 @@ 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,
+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
-@@ -29,16 +29,17 @@
- #define SPI_BPW_MASK(bits) BIT((bits) - 1)
-
+@@ -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
/* SPISTAT register bit field */
#define SPISTAT_BUSY BIT(0)
-@@ -68,6 +69,10 @@
+@@ -63,6 +69,19 @@
/* SPIFIFOSTAT register bit field */
#define SPIFIFOSTAT_TXFULL BIT(17)
+#define SPI1_POR BIT(1)
+#define SPI0_POR BIT(0)
+
- #define MT7621_SPI_TRANS 0x00
- #define SPITRANS_BUSY BIT(16)
- #define MT7621_SPI_OPCODE 0x04
-@@ -78,13 +83,16 @@
- #define MT7621_SPI_MASTER 0x28
- #define MT7621_SPI_SPACE 0x3c
-
+#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);
-- void (*set_cs)(struct rt2880_spi *rs, int enable);
-+ void (*set_cs)(struct spi_device *spi, int enable);
- int (*baudrate_set)(struct spi_device *spi, unsigned int speed);
- unsigned int (*write_read)(struct spi_device *spi, struct list_head *list, struct spi_transfer *xfer);
++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;
};
- struct rt2880_spi {
-@@ -141,6 +149,7 @@ static inline void rt2880_spi_clrbits(st
+ 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)
{
struct rt2880_spi *rs = spidev_to_rt2880_spi(spi);
u32 rate;
u32 prescale;
-@@ -168,9 +177,9 @@ static int rt2880_spi_baudrate_set(struc
+@@ -142,9 +164,9 @@ static int rt2880_spi_baudrate_set(struc
prescale = ilog2(rate / 2);
dev_dbg(&spi->dev, "prescale:%u\n", prescale);
rs->speed = speed;
return 0;
}
-@@ -194,7 +203,8 @@ rt2880_spi_setup_transfer(struct spi_dev
+@@ -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;
if ((t != NULL) && t->speed_hz)
speed = t->speed_hz;
-@@ -206,19 +216,61 @@ rt2880_spi_setup_transfer(struct spi_dev
+@@ -169,25 +192,68 @@ rt2880_spi_setup_transfer(struct spi_dev
return rc;
}
+ rt2880_spi_setbits(rs, RAMIPS_SPI_CTL(cs), SPICTL_SPIENA);
}
--static void mt7621_spi_set_cs(struct rt2880_spi *rs, int enable)
-+static void mt7621_spi_set_cs(struct spi_device *spi, int enable)
- {
-+ struct rt2880_spi *rs = spidev_to_rt2880_spi(spi);
- u32 polar = rt2880_spi_read(rs, MT7621_SPI_POLAR);
-
- if (enable)
-@@ -228,14 +280,16 @@ static void mt7621_spi_set_cs(struct rt2
- rt2880_spi_write(rs, MT7621_SPI_POLAR, polar);
- }
-
-static inline int rt2880_spi_wait_till_ready(struct rt2880_spi *rs)
+static inline int rt2880_spi_wait_till_ready(struct spi_device *spi)
{
if ((status & SPISTAT_BUSY) == 0)
return 0;
-@@ -246,8 +300,9 @@ static inline int rt2880_spi_wait_till_r
- return -ETIMEDOUT;
+@@ -199,9 +265,10 @@ static inline int rt2880_spi_wait_till_r
}
--static inline int mt7621_spi_wait_till_ready(struct rt2880_spi *rs)
-+static inline int mt7621_spi_wait_till_ready(struct spi_device *spi)
- {
-+ struct rt2880_spi *rs = spidev_to_rt2880_spi(spi);
- int i;
-
- for (i = 0; i < RALINK_SPI_WAIT_MAX_LOOP; i++) {
-@@ -268,6 +323,7 @@ static unsigned int
- rt2880_spi_write_read(struct spi_device *spi, struct list_head *list, struct spi_transfer *xfer)
+ 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;
-@@ -279,9 +335,9 @@ rt2880_spi_write_read(struct spi_device
+@@ -213,9 +280,9 @@ rt2880_spi_write_read(struct spi_device
if (tx) {
for (count = 0; count < xfer->len; count++) {
if (err) {
dev_err(&spi->dev, "TX failed, err=%d\n", err);
goto out;
-@@ -291,13 +347,13 @@ rt2880_spi_write_read(struct spi_device
+@@ -225,13 +292,13 @@ rt2880_spi_write_read(struct spi_device
if (rx) {
for (count = 0; count < xfer->len; count++) {
}
}
-@@ -364,7 +420,7 @@ mt7621_spi_write_read(struct spi_device
- trans |= SPI_CTL_START;
- rt2880_spi_write(rs, MT7621_SPI_TRANS, trans);
-
-- mt7621_spi_wait_till_ready(rs);
-+ mt7621_spi_wait_till_ready(spi);
-
- if (rx) {
- u32 data0 = rt2880_spi_read(rs, MT7621_SPI_DATA0);
-@@ -440,7 +496,7 @@ static int rt2880_spi_transfer_one_messa
+@@ -280,25 +347,25 @@ static int rt2880_spi_transfer_one_messa
}
if (!cs_active) {
-- rs->ops->set_cs(rs, 1);
-+ rs->ops->set_cs(spi, 1);
+- rt2880_spi_set_cs(rs, 1);
++ rt2880_spi_set_cs(spi, 1);
cs_active = 1;
}
-@@ -451,14 +507,14 @@ static int rt2880_spi_transfer_one_messa
+ 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) {
-- rs->ops->set_cs(rs, 0);
-+ rs->ops->set_cs(spi, 0);
+- rt2880_spi_set_cs(rs, 0);
++ rt2880_spi_set_cs(spi, 0);
cs_active = 0;
}
}
msg_done:
if (cs_active)
-- rs->ops->set_cs(rs, 0);
-+ rs->ops->set_cs(spi, 0);
+- rt2880_spi_set_cs(rs, 0);
++ rt2880_spi_set_cs(spi, 0);
m->status = status;
spi_finalize_current_message(master);
-@@ -471,7 +527,7 @@ static int rt2880_spi_setup(struct spi_d
+@@ -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);
if (spi->max_speed_hz < (rs->sys_freq / 128)) {
-@@ -488,10 +544,25 @@ static int rt2880_spi_setup(struct spi_d
+@@ -328,14 +395,47 @@ static int rt2880_spi_setup(struct spi_d
static void rt2880_spi_reset(struct rt2880_spi *rs)
{
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;
+ SPICFG_SPICLK_DIV16 | SPICFG_SPICLKPOL);
+ rt2880_spi_write(rs, RAMIPS_SPI_CTL(cs), SPICTL_HIZSDO | SPICTL_SPIENA);
+ }
- }
-
- static void mt7621_spi_reset(struct rt2880_spi *rs)
-@@ -511,24 +582,33 @@ static struct rt2880_spi_ops spi_ops[] =
- .set_cs = rt2880_spi_set_cs,
- .baudrate_set = rt2880_spi_baudrate_set,
- .write_read = rt2880_spi_write_read,
++}
++
++static struct rt2880_spi_ops spi_ops[] = {
++ {
++ .init_hw = rt2880_spi_reset,
+ .num_cs = 1,
+ }, {
+ .init_hw = rt5350_spi_reset,
-+ .set_cs = rt2880_spi_set_cs,
-+ .baudrate_set = rt2880_spi_baudrate_set,
-+ .write_read = rt2880_spi_write_read,
+ .num_cs = 2,
- }, {
- .init_hw = mt7621_spi_reset,
- .set_cs = mt7621_spi_set_cs,
- .baudrate_set = mt7621_spi_baudrate_set,
- .write_read = mt7621_spi_write_read,
-+ .num_cs = 1,
- },
- };
-
- static const struct of_device_id rt2880_spi_match[] = {
- { .compatible = "ralink,rt2880-spi", .data = &spi_ops[0]},
-- { .compatible = "ralink,mt7621-spi", .data = &spi_ops[1] },
++ },
++};
++
++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]},
-+ { .compatible = "ralink,mt7621-spi", .data = &spi_ops[2] },
- {},
- };
- MODULE_DEVICE_TABLE(of, rt2880_spi_match);
-
++ {},
++};
++MODULE_DEVICE_TABLE(of, rt2880_spi_match);
++
static int rt2880_spi_probe(struct platform_device *pdev)
{
-- const struct of_device_id *match;
+ const struct of_device_id *match;
struct spi_master *master;
struct rt2880_spi *rs;
unsigned long flags;
-@@ -536,10 +616,12 @@ static int rt2880_spi_probe(struct platf
+@@ -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);
++
+ match = of_match_device(rt2880_spi_match, &pdev->dev);
- if (!match)
- return -EINVAL;
++ 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);
-@@ -563,14 +645,13 @@ static int rt2880_spi_probe(struct platf
+@@ -366,14 +472,13 @@ static int rt2880_spi_probe(struct platf
return -ENOMEM;
}
dev_set_drvdata(&pdev->dev, master);
-@@ -579,7 +660,7 @@ static int rt2880_spi_probe(struct platf
+@@ -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 = (struct rt2880_spi_ops *) match->data;
+ 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,
--- /dev/null
+--- a/drivers/spi/Kconfig
++++ b/drivers/spi/Kconfig
+@@ -396,6 +396,12 @@ config SPI_RT2880
+ help
+ This selects a driver for the Ralink RT288x/RT305x SPI Controller.
+
++config SPI_MT7621
++ tristate "MediaTek MT7621 SPI Controller"
++ depends on RALINK
++ help
++ This selects a driver for the MediaTek MT7621 SPI Controller.
++
+ config SPI_S3C24XX
+ tristate "Samsung S3C24XX series SPI"
+ depends on ARCH_S3C24XX
+--- a/drivers/spi/Makefile
++++ b/drivers/spi/Makefile
+@@ -44,6 +44,7 @@ obj-$(CONFIG_SPI_LM70_LLP) += spi-lm70l
+ obj-$(CONFIG_SPI_MPC512x_PSC) += spi-mpc512x-psc.o
+ obj-$(CONFIG_SPI_MPC52xx_PSC) += spi-mpc52xx-psc.o
+ obj-$(CONFIG_SPI_MPC52xx) += spi-mpc52xx.o
++obj-$(CONFIG_SPI_MT7621) += spi-mt7621.o
+ obj-$(CONFIG_SPI_MXS) += spi-mxs.o
+ obj-$(CONFIG_SPI_NUC900) += spi-nuc900.o
+ obj-$(CONFIG_SPI_OC_TINY) += spi-oc-tiny.o
+--- /dev/null
++++ b/drivers/spi/spi-mt7621.c
+@@ -0,0 +1,315 @@
++/*
++ * spi-mt7621.c -- MediaTek MT7621 SPI controller driver
++ *
++ * Copyright (C) 2011 Sergiy <piratfm@gmail.com>
++ * Copyright (C) 2011-2013 Gabor Juhos <juhosg@openwrt.org>
++ * Copyright (C) 2014-2015 Felix Fietkau <nbd@openwrt.org>
++ *
++ * Some parts are based on spi-orion.c:
++ * Author: Shadi Ammouri <shadi@marvell.com>
++ * 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 <linux/init.h>
++#include <linux/module.h>
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/delay.h>
++#include <linux/io.h>
++#include <linux/reset.h>
++#include <linux/spi/spi.h>
++#include <linux/of_device.h>
++#include <linux/platform_device.h>
++#include <linux/swab.h>
++
++#include <ralink_regs.h>
++
++#define SPI_BPW_MASK(bits) BIT((bits) - 1)
++
++#define DRIVER_NAME "spi-mt7621"
++/* in usec */
++#define RALINK_SPI_WAIT_MAX_LOOP 2000
++
++/* SPISTAT register bit field */
++#define SPISTAT_BUSY BIT(0)
++
++#define MT7621_SPI_TRANS 0x00
++#define SPITRANS_BUSY BIT(16)
++
++#define MT7621_SPI_OPCODE 0x04
++#define MT7621_SPI_DATA0 0x08
++#define SPI_CTL_TX_RX_CNT_MASK 0xff
++#define SPI_CTL_START BIT(8)
++
++#define MT7621_SPI_POLAR 0x38
++#define MT7621_SPI_MASTER 0x28
++#define MT7621_SPI_MOREBUF 0x2c
++#define MT7621_SPI_SPACE 0x3c
++
++#define RT2880_SPI_MODE_BITS (SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST | SPI_CS_HIGH)
++
++struct mt7621_spi;
++
++struct mt7621_spi {
++ struct spi_master *master;
++ void __iomem *base;
++ unsigned int sys_freq;
++ unsigned int speed;
++ struct clk *clk;
++ spinlock_t lock;
++
++ struct mt7621_spi_ops *ops;
++};
++
++static inline struct mt7621_spi *spidev_to_mt7621_spi(struct spi_device *spi)
++{
++ return spi_master_get_devdata(spi->master);
++}
++
++static inline u32 mt7621_spi_read(struct mt7621_spi *rs, u32 reg)
++{
++ return ioread32(rs->base + reg);
++}
++
++static inline void mt7621_spi_write(struct mt7621_spi *rs, u32 reg, u32 val)
++{
++ iowrite32(val, rs->base + reg);
++}
++
++static void mt7621_spi_set_cs(struct spi_device *spi, int enable)
++{
++ struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);
++ u32 polar = mt7621_spi_read(rs, MT7621_SPI_POLAR);
++
++ if (enable)
++ polar |= 1;
++ else
++ polar &= ~1;
++ mt7621_spi_write(rs, MT7621_SPI_POLAR, polar);
++}
++
++static inline int mt7621_spi_wait_till_ready(struct spi_device *spi)
++{
++ struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);
++ int i;
++
++ for (i = 0; i < RALINK_SPI_WAIT_MAX_LOOP; i++) {
++ u32 status;
++
++ status = mt7621_spi_read(rs, MT7621_SPI_TRANS);
++ if ((status & SPITRANS_BUSY) == 0) {
++ return 0;
++ }
++ cpu_relax();
++ udelay(1);
++ }
++
++ return -ETIMEDOUT;
++}
++
++static int mt7621_spi_transfer_one_message(struct spi_master *master,
++ struct spi_message *m)
++{
++ struct mt7621_spi *rs = spi_master_get_devdata(master);
++ struct spi_device *spi = m->spi;
++ struct spi_transfer *t = NULL;
++ int status = 0;
++ int i, len = 0;
++ int rx_len = 0;
++ u32 data[9] = { 0 };
++ u32 val;
++
++ mt7621_spi_wait_till_ready(spi);
++
++ list_for_each_entry(t, &m->transfers, transfer_list) {
++ const u8 *buf = t->tx_buf;
++
++ if (t->rx_buf)
++ rx_len += t->len;
++
++ if (!buf)
++ continue;
++
++ if (WARN_ON(len + t->len > 36)) {
++ status = -EIO;
++ goto msg_done;
++ }
++
++ for (i = 0; i < t->len; i++, len++)
++ data[len / 4] |= buf[i] << (8 * (len & 3));
++ }
++
++ if (WARN_ON(rx_len > 32)) {
++ status = -EIO;
++ goto msg_done;
++ }
++
++ data[0] = swab32(data[0]);
++ if (len < 4)
++ data[0] >>= (4 - len) * 8;
++
++ for (i = 0; i < len; i += 4)
++ mt7621_spi_write(rs, MT7621_SPI_OPCODE + i, data[i / 4]);
++
++ val = (min_t(int, len, 4) * 8) << 24;
++ if (len > 4)
++ val |= (len - 4) * 8;
++ val |= (rx_len * 8) << 12;
++ mt7621_spi_write(rs, MT7621_SPI_MOREBUF, val);
++
++ mt7621_spi_set_cs(spi, 1);
++
++ val = mt7621_spi_read(rs, MT7621_SPI_TRANS);
++ val |= SPI_CTL_START;
++ mt7621_spi_write(rs, MT7621_SPI_TRANS, val);
++
++ mt7621_spi_wait_till_ready(spi);
++
++ mt7621_spi_set_cs(spi, 0);
++
++ for (i = 0; i < rx_len; i += 4)
++ data[i / 4] = mt7621_spi_read(rs, MT7621_SPI_DATA0 + i);
++
++ m->actual_length = len + rx_len;
++
++ len = 0;
++ list_for_each_entry(t, &m->transfers, transfer_list) {
++ u8 *buf = t->rx_buf;
++
++ if (!buf)
++ continue;
++
++ for (i = 0; i < t->len; i++, len++)
++ buf[i] = data[len / 4] >> (8 * (len & 3));
++ }
++
++msg_done:
++ m->status = status;
++ spi_finalize_current_message(master);
++
++ return 0;
++}
++
++static int mt7621_spi_setup(struct spi_device *spi)
++{
++ return 0;
++}
++
++static void mt7621_spi_reset(struct mt7621_spi *rs)
++{
++ u32 master = mt7621_spi_read(rs, MT7621_SPI_MASTER);
++
++ master &= ~(0xfff << 16);
++ master |= 13 << 16;
++ master |= 7 << 29;
++ master |= 1 << 2;
++
++ mt7621_spi_write(rs, MT7621_SPI_MASTER, master);
++}
++
++static const struct of_device_id mt7621_spi_match[] = {
++ { .compatible = "ralink,mt7621-spi" },
++ {},
++};
++MODULE_DEVICE_TABLE(of, mt7621_spi_match);
++
++static int mt7621_spi_probe(struct platform_device *pdev)
++{
++ const struct of_device_id *match;
++ struct spi_master *master;
++ struct mt7621_spi *rs;
++ unsigned long flags;
++ void __iomem *base;
++ struct resource *r;
++ int status = 0;
++ struct clk *clk;
++ struct mt7621_spi_ops *ops;
++
++ match = of_match_device(mt7621_spi_match, &pdev->dev);
++ if (!match)
++ return -EINVAL;
++ ops = (struct mt7621_spi_ops *)match->data;
++
++ 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, err=%d\n",
++ status);
++ return PTR_ERR(clk);
++ }
++
++ status = clk_prepare_enable(clk);
++ if (status)
++ return status;
++
++ master = spi_alloc_master(&pdev->dev, sizeof(*rs));
++ if (master == NULL) {
++ dev_dbg(&pdev->dev, "master allocation failed\n");
++ return -ENOMEM;
++ }
++
++ master->mode_bits = RT2880_SPI_MODE_BITS;
++
++ master->setup = mt7621_spi_setup;
++ master->transfer_one_message = mt7621_spi_transfer_one_message;
++ master->bits_per_word_mask = SPI_BPW_MASK(8);
++ master->dev.of_node = pdev->dev.of_node;
++ master->num_chipselect = 1;
++
++ dev_set_drvdata(&pdev->dev, master);
++
++ rs = spi_master_get_devdata(master);
++ rs->base = base;
++ 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);
++
++ mt7621_spi_reset(rs);
++
++ return spi_register_master(master);
++}
++
++static int mt7621_spi_remove(struct platform_device *pdev)
++{
++ struct spi_master *master;
++ struct mt7621_spi *rs;
++
++ master = dev_get_drvdata(&pdev->dev);
++ rs = spi_master_get_devdata(master);
++
++ clk_disable(rs->clk);
++ spi_unregister_master(master);
++
++ return 0;
++}
++
++MODULE_ALIAS("platform:" DRIVER_NAME);
++
++static struct platform_driver mt7621_spi_driver = {
++ .driver = {
++ .name = DRIVER_NAME,
++ .owner = THIS_MODULE,
++ .of_match_table = mt7621_spi_match,
++ },
++ .probe = mt7621_spi_probe,
++ .remove = mt7621_spi_remove,
++};
++
++module_platform_driver(mt7621_spi_driver);
++
++MODULE_DESCRIPTION("MT7621 SPI driver");
++MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
++MODULE_LICENSE("GPL");
# CONFIG_SOC_RT3883 is not set
CONFIG_SPI=y
CONFIG_SPI_MASTER=y
+# CONFIG_SPI_MT7621 is not set
CONFIG_SPI_RT2880=y
CONFIG_SWCONFIG=y
CONFIG_SYS_HAS_CPU_MIPS32_R1=y
# CONFIG_SOC_RT3883 is not set
CONFIG_SPI=y
CONFIG_SPI_MASTER=y
+# CONFIG_SPI_MT7621 is not set
CONFIG_SPI_RT2880=y
CONFIG_SWCONFIG=y
CONFIG_SYS_HAS_CPU_MIPS32_R1=y
CONFIG_SOC_RT3883=y
CONFIG_SPI=y
CONFIG_SPI_MASTER=y
+# CONFIG_SPI_MT7621 is not set
CONFIG_SPI_RT2880=y
CONFIG_SWCONFIG=y
CONFIG_SYS_HAS_CPU_MIPS32_R1=y
projects / thirdparty / openwrt.git / commitdiff
