summaryrefslogtreecommitdiffstats
path: root/target/linux/ar71xx/patches-3.2/306-spi-rb4xx-3.2-fixes.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/ar71xx/patches-3.2/306-spi-rb4xx-3.2-fixes.patch')
-rw-r--r--target/linux/ar71xx/patches-3.2/306-spi-rb4xx-3.2-fixes.patch261
1 files changed, 0 insertions, 261 deletions
diff --git a/target/linux/ar71xx/patches-3.2/306-spi-rb4xx-3.2-fixes.patch b/target/linux/ar71xx/patches-3.2/306-spi-rb4xx-3.2-fixes.patch
deleted file mode 100644
index ba02e59b0..000000000
--- a/target/linux/ar71xx/patches-3.2/306-spi-rb4xx-3.2-fixes.patch
+++ /dev/null
@@ -1,261 +0,0 @@
---- a/drivers/spi/spi-rb4xx.c
-+++ b/drivers/spi/spi-rb4xx.c
-@@ -12,7 +12,10 @@
- *
- */
-
-+#include <linux/clk.h>
-+#include <linux/err.h>
- #include <linux/kernel.h>
-+#include <linux/module.h>
- #include <linux/init.h>
- #include <linux/delay.h>
- #include <linux/spinlock.h>
-@@ -20,7 +23,8 @@
- #include <linux/platform_device.h>
- #include <linux/spi/spi.h>
-
--#include <asm/mach-ar71xx/ar71xx.h>
-+#include <asm/mach-ath79/ar71xx_regs.h>
-+#include <asm/mach-ath79/ath79.h>
-
- #define DRV_NAME "rb4xx-spi"
- #define DRV_DESC "Mikrotik RB4xx SPI controller driver"
-@@ -41,13 +45,16 @@ struct rb4xx_spi {
- unsigned spi_ctrl_flash;
- unsigned spi_ctrl_fread;
-
-+ struct clk *ahb_clk;
-+ unsigned long ahb_freq;
-+
- spinlock_t lock;
- struct list_head queue;
- int busy:1;
- int cs_wait;
- };
-
--static unsigned spi_clk_low = SPI_IOC_CS1;
-+static unsigned spi_clk_low = AR71XX_SPI_IOC_CS1;
-
- #ifdef RB4XX_SPI_DEBUG
- static inline void do_spi_delay(void)
-@@ -60,10 +67,11 @@ static inline void do_spi_delay(void) {
-
- static inline void do_spi_init(struct spi_device *spi)
- {
-- unsigned cs = SPI_IOC_CS0 | SPI_IOC_CS1;
-+ unsigned cs = AR71XX_SPI_IOC_CS0 | AR71XX_SPI_IOC_CS1;
-
- if (!(spi->mode & SPI_CS_HIGH))
-- cs ^= (spi->chip_select == 2) ? SPI_IOC_CS1 : SPI_IOC_CS0;
-+ cs ^= (spi->chip_select == 2) ? AR71XX_SPI_IOC_CS1 :
-+ AR71XX_SPI_IOC_CS0;
-
- spi_clk_low = cs;
- }
-@@ -71,17 +79,18 @@ static inline void do_spi_init(struct sp
- static inline void do_spi_finish(void __iomem *base)
- {
- do_spi_delay();
-- __raw_writel(SPI_IOC_CS0 | SPI_IOC_CS1, base + SPI_REG_IOC);
-+ __raw_writel(AR71XX_SPI_IOC_CS0 | AR71XX_SPI_IOC_CS1,
-+ base + AR71XX_SPI_REG_IOC);
- }
-
- static inline void do_spi_clk(void __iomem *base, int bit)
- {
-- unsigned bval = spi_clk_low | ((bit & 1) ? SPI_IOC_DO : 0);
-+ unsigned bval = spi_clk_low | ((bit & 1) ? AR71XX_SPI_IOC_DO : 0);
-
- do_spi_delay();
-- __raw_writel(bval, base + SPI_REG_IOC);
-+ __raw_writel(bval, base + AR71XX_SPI_REG_IOC);
- do_spi_delay();
-- __raw_writel(bval | SPI_IOC_CLK, base + SPI_REG_IOC);
-+ __raw_writel(bval | AR71XX_SPI_IOC_CLK, base + AR71XX_SPI_REG_IOC);
- }
-
- static void do_spi_byte(void __iomem *base, unsigned char byte)
-@@ -97,19 +106,19 @@ static void do_spi_byte(void __iomem *ba
-
- pr_debug("spi_byte sent 0x%02x got 0x%02x\n",
- (unsigned)byte,
-- (unsigned char)__raw_readl(base + SPI_REG_RDS));
-+ (unsigned char)__raw_readl(base + AR71XX_SPI_REG_RDS));
- }
-
- static inline void do_spi_clk_fast(void __iomem *base, unsigned bit1,
- unsigned bit2)
- {
- unsigned bval = (spi_clk_low |
-- ((bit1 & 1) ? SPI_IOC_DO : 0) |
-- ((bit2 & 1) ? SPI_IOC_CS2 : 0));
-+ ((bit1 & 1) ? AR71XX_SPI_IOC_DO : 0) |
-+ ((bit2 & 1) ? AR71XX_SPI_IOC_CS2 : 0));
- do_spi_delay();
-- __raw_writel(bval, base + SPI_REG_IOC);
-+ __raw_writel(bval, base + AR71XX_SPI_REG_IOC);
- do_spi_delay();
-- __raw_writel(bval | SPI_IOC_CLK, base + SPI_REG_IOC);
-+ __raw_writel(bval | AR71XX_SPI_IOC_CLK, base + AR71XX_SPI_REG_IOC);
- }
-
- static void do_spi_byte_fast(void __iomem *base, unsigned char byte)
-@@ -121,7 +130,7 @@ static void do_spi_byte_fast(void __iome
-
- pr_debug("spi_byte_fast sent 0x%02x got 0x%02x\n",
- (unsigned)byte,
-- (unsigned char) __raw_readl(base + SPI_REG_RDS));
-+ (unsigned char) __raw_readl(base + AR71XX_SPI_REG_RDS));
- }
-
- static int rb4xx_spi_txrx(void __iomem *base, struct spi_transfer *t)
-@@ -150,9 +159,9 @@ static int rb4xx_spi_txrx(void __iomem *
- do_spi_byte(base, sdata);
-
- if (rx_ptr) {
-- rx_ptr[i] = __raw_readl(base + SPI_REG_RDS) & 0xff;
-+ rx_ptr[i] = __raw_readl(base + AR71XX_SPI_REG_RDS) & 0xff;
- } else if (rxv_ptr) {
-- unsigned char c = __raw_readl(base + SPI_REG_RDS);
-+ unsigned char c = __raw_readl(base + AR71XX_SPI_REG_RDS);
- if (rxv_ptr[i] != c)
- return i;
- }
-@@ -201,9 +210,9 @@ static int rb4xx_spi_read_fast(struct rb
- if (t->tx_buf && !t->verify)
- return -1;
-
-- __raw_writel(SPI_FS_GPIO, base + SPI_REG_FS);
-- __raw_writel(rbspi->spi_ctrl_fread, base + SPI_REG_CTRL);
-- __raw_writel(0, base + SPI_REG_FS);
-+ __raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS);
-+ __raw_writel(rbspi->spi_ctrl_fread, base + AR71XX_SPI_REG_CTRL);
-+ __raw_writel(0, base + AR71XX_SPI_REG_FS);
-
- if (t->rx_buf) {
- memcpy(t->rx_buf, (const void *)addr, t->len);
-@@ -216,9 +225,9 @@ static int rb4xx_spi_read_fast(struct rb
- m->actual_length += t->len;
-
- if (rbspi->spi_ctrl_flash != rbspi->spi_ctrl_fread) {
-- __raw_writel(SPI_FS_GPIO, base + SPI_REG_FS);
-- __raw_writel(rbspi->spi_ctrl_flash, base + SPI_REG_CTRL);
-- __raw_writel(0, base + SPI_REG_FS);
-+ __raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS);
-+ __raw_writel(rbspi->spi_ctrl_flash, base + AR71XX_SPI_REG_CTRL);
-+ __raw_writel(0, base + AR71XX_SPI_REG_FS);
- }
-
- return 0;
-@@ -237,8 +246,8 @@ static int rb4xx_spi_msg(struct rb4xx_sp
- if (rb4xx_spi_read_fast(rbspi, m) == 0)
- return -1;
-
-- __raw_writel(SPI_FS_GPIO, base + SPI_REG_FS);
-- __raw_writel(SPI_CTRL_FASTEST, base + SPI_REG_CTRL);
-+ __raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS);
-+ __raw_writel(SPI_CTRL_FASTEST, base + AR71XX_SPI_REG_CTRL);
- do_spi_init(m->spi);
-
- list_for_each_entry(t, &m->transfers, transfer_list) {
-@@ -262,8 +271,8 @@ static int rb4xx_spi_msg(struct rb4xx_sp
- }
-
- do_spi_finish(base);
-- __raw_writel(rbspi->spi_ctrl_flash, base + SPI_REG_CTRL);
-- __raw_writel(0, base + SPI_REG_FS);
-+ __raw_writel(rbspi->spi_ctrl_flash, base + AR71XX_SPI_REG_CTRL);
-+ __raw_writel(0, base + AR71XX_SPI_REG_FS);
- return -1;
- }
-
-@@ -352,11 +361,12 @@ static int rb4xx_spi_setup(struct spi_de
- return 0;
- }
-
--static unsigned get_spi_ctrl(unsigned hz_max, const char *name)
-+static unsigned get_spi_ctrl(struct rb4xx_spi *rbspi, unsigned hz_max,
-+ const char *name)
- {
- unsigned div;
-
-- div = (ar71xx_ahb_freq - 1) / (2 * hz_max);
-+ div = (rbspi->ahb_freq - 1) / (2 * hz_max);
-
- /*
- * CPU has a bug at (div == 0) - first bit read is random
-@@ -365,7 +375,7 @@ static unsigned get_spi_ctrl(unsigned hz
- ++div;
-
- if (name) {
-- unsigned ahb_khz = (ar71xx_ahb_freq + 500) / 1000;
-+ unsigned ahb_khz = (rbspi->ahb_freq + 500) / 1000;
- unsigned div_real = 2 * (div + 1);
- pr_debug("rb4xx: %s SPI clock %u kHz (AHB %u kHz / %u)\n",
- name,
-@@ -396,23 +406,40 @@ static int rb4xx_spi_probe(struct platfo
- master->transfer = rb4xx_spi_transfer;
-
- rbspi = spi_master_get_devdata(master);
-+
-+ rbspi->ahb_clk = clk_get(&pdev->dev, "ahb");
-+ if (IS_ERR(rbspi->ahb_clk)) {
-+ err = PTR_ERR(rbspi->ahb_clk);
-+ goto err_put_master;
-+ }
-+
-+ err = clk_enable(rbspi->ahb_clk);
-+ if (err)
-+ goto err_clk_put;
-+
-+ rbspi->ahb_freq = clk_get_rate(rbspi->ahb_clk);
-+ if (!rbspi->ahb_freq) {
-+ err = -EINVAL;
-+ goto err_clk_disable;
-+ }
-+
- platform_set_drvdata(pdev, rbspi);
-
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (r == NULL) {
- err = -ENOENT;
-- goto err_put_master;
-+ goto err_clk_disable;
- }
-
- rbspi->base = ioremap(r->start, r->end - r->start + 1);
- if (!rbspi->base) {
- err = -ENXIO;
-- goto err_put_master;
-+ goto err_clk_disable;
- }
-
- rbspi->master = master;
-- rbspi->spi_ctrl_flash = get_spi_ctrl(SPI_FLASH_HZ, "FLASH");
-- rbspi->spi_ctrl_fread = get_spi_ctrl(SPI_CPLD_HZ, "CPLD");
-+ rbspi->spi_ctrl_flash = get_spi_ctrl(rbspi, SPI_FLASH_HZ, "FLASH");
-+ rbspi->spi_ctrl_fread = get_spi_ctrl(rbspi, SPI_CPLD_HZ, "CPLD");
- rbspi->cs_wait = -1;
-
- spin_lock_init(&rbspi->lock);
-@@ -428,6 +455,10 @@ static int rb4xx_spi_probe(struct platfo
-
- err_iounmap:
- iounmap(rbspi->base);
-+err_clk_disable:
-+ clk_disable(rbspi->ahb_clk);
-+err_clk_put:
-+ clk_put(rbspi->ahb_clk);
- err_put_master:
- platform_set_drvdata(pdev, NULL);
- spi_master_put(master);
-@@ -440,6 +471,8 @@ static int rb4xx_spi_remove(struct platf
- struct rb4xx_spi *rbspi = platform_get_drvdata(pdev);
-
- iounmap(rbspi->base);
-+ clk_disable(rbspi->ahb_clk);
-+ clk_put(rbspi->ahb_clk);
- platform_set_drvdata(pdev, NULL);
- spi_master_put(rbspi->master);
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-09 21:41:08 +0000