From 0547b47537b53201f96f49d95843e906d8bd166e Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 12 Sep 2014 06:50:46 +0000 Subject: ralink: drop 3.10 support Signed-off-by: John Crispin git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42481 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../0215-SPI-ralink-add-mt7621-support.patch | 346 --------------------- 1 file changed, 346 deletions(-) delete mode 100644 target/linux/ramips/patches-3.10/0215-SPI-ralink-add-mt7621-support.patch (limited to 'target/linux/ramips/patches-3.10/0215-SPI-ralink-add-mt7621-support.patch') diff --git a/target/linux/ramips/patches-3.10/0215-SPI-ralink-add-mt7621-support.patch b/target/linux/ramips/patches-3.10/0215-SPI-ralink-add-mt7621-support.patch deleted file mode 100644 index ec20066bf3..0000000000 --- a/target/linux/ramips/patches-3.10/0215-SPI-ralink-add-mt7621-support.patch +++ /dev/null @@ -1,346 +0,0 @@ -From 1a961f146e65e2716dbe9065baa4c0931fcb6b3e Mon Sep 17 00:00:00 2001 -From: John Crispin -Date: Sun, 16 Mar 2014 05:34:11 +0000 -Subject: [PATCH 215/215] SPI: ralink: add mt7621 support - -Signed-off-by: John Crispin ---- - 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 - #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 -@@ -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, -- cgit v1.2.3