arm: exynos: pinmux: add sdmmc4 gpio configratuion

For use dwmmc controller at exynos4, add SDMMC4 gpio configuration.

Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Piotr Wilczek <p.wilczek@samsung.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Piotr Wilczek <p.wilczek@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index ee7c2e5a4be5b755cc38d434a12204868630a263..86a0c75326730bffe70d8112955d222552ef5a38 100644 (file)
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -573,15 +573,26 @@ static void exynos4_i2c_config(int peripheral, int flags)
 static int exynos4_mmc_config(int peripheral, int flags)
 {
        int i, start = 0, start_ext = 0;
+       unsigned int func, ext_func;
 
        switch (peripheral) {
        case PERIPH_ID_SDMMC0:
                start = EXYNOS4_GPIO_K00;
                start_ext = EXYNOS4_GPIO_K13;
+               func = S5P_GPIO_FUNC(0x2);
+               ext_func = S5P_GPIO_FUNC(0x3);
                break;
        case PERIPH_ID_SDMMC2:
                start = EXYNOS4_GPIO_K20;
                start_ext = EXYNOS4_GPIO_K33;
+               func = S5P_GPIO_FUNC(0x2);
+               ext_func = S5P_GPIO_FUNC(0x3);
+               break;
+       case PERIPH_ID_SDMMC4:
+               start = EXYNOS4_GPIO_K00;
+               start_ext = EXYNOS4_GPIO_K13;
+               func = S5P_GPIO_FUNC(0x3);
+               ext_func = S5P_GPIO_FUNC(0x4);
                break;
        default:
                return -1;
@@ -589,13 +600,14 @@ static int exynos4_mmc_config(int peripheral, int flags)
        for (i = start; i < (start + 7); i++) {
                if (i == (start + 2))
                        continue;
-               gpio_cfg_pin(i,  S5P_GPIO_FUNC(0x2));
+               gpio_cfg_pin(i,  func);
                gpio_set_pull(i, S5P_GPIO_PULL_NONE);
                gpio_set_drv(i, S5P_GPIO_DRV_4X);
        }
+       /* SDMMC2 do not use 8bit mode at exynos4 */
        if (flags & PINMUX_FLAG_8BIT_MODE) {
                for (i = start_ext; i < (start_ext + 4); i++) {
-                       gpio_cfg_pin(i,  S5P_GPIO_FUNC(0x3));
+                       gpio_cfg_pin(i,  ext_func);
                        gpio_set_pull(i, S5P_GPIO_PULL_NONE);
                        gpio_set_drv(i, S5P_GPIO_DRV_4X);
                }
@@ -676,15 +688,26 @@ static void exynos4x12_i2c_config(int peripheral, int flags)
 static int exynos4x12_mmc_config(int peripheral, int flags)
 {
        int i, start = 0, start_ext = 0;
+       unsigned int func, ext_func;
 
        switch (peripheral) {
        case PERIPH_ID_SDMMC0:
                start = EXYNOS4X12_GPIO_K00;
                start_ext = EXYNOS4X12_GPIO_K13;
+               func = S5P_GPIO_FUNC(0x2);
+               ext_func = S5P_GPIO_FUNC(0x3);
                break;
        case PERIPH_ID_SDMMC2:
                start = EXYNOS4X12_GPIO_K20;
                start_ext = EXYNOS4X12_GPIO_K33;
+               func = S5P_GPIO_FUNC(0x2);
+               ext_func = S5P_GPIO_FUNC(0x3);
+               break;
+       case PERIPH_ID_SDMMC4:
+               start = EXYNOS4_GPIO_K00;
+               start_ext = EXYNOS4_GPIO_K13;
+               func = S5P_GPIO_FUNC(0x3);
+               ext_func = S5P_GPIO_FUNC(0x4);
                break;
        default:
                return -1;
@@ -692,13 +715,13 @@ static int exynos4x12_mmc_config(int peripheral, int flags)
        for (i = start; i < (start + 7); i++) {
                if (i == (start + 2))
                        continue;
-               gpio_cfg_pin(i,  S5P_GPIO_FUNC(0x2));
+               gpio_cfg_pin(i,  func);
                gpio_set_pull(i, S5P_GPIO_PULL_NONE);
                gpio_set_drv(i, S5P_GPIO_DRV_4X);
        }
        if (flags & PINMUX_FLAG_8BIT_MODE) {
                for (i = start_ext; i < (start_ext + 4); i++) {
-                       gpio_cfg_pin(i,  S5P_GPIO_FUNC(0x3));
+                       gpio_cfg_pin(i,  ext_func);
                        gpio_set_pull(i, S5P_GPIO_PULL_NONE);
                        gpio_set_drv(i, S5P_GPIO_DRV_4X);
                }
@@ -759,10 +782,10 @@ static int exynos4_pinmux_config(int peripheral, int flags)
                break;
        case PERIPH_ID_SDMMC0:
        case PERIPH_ID_SDMMC2:
+       case PERIPH_ID_SDMMC4:
                return exynos4_mmc_config(peripheral, flags);
        case PERIPH_ID_SDMMC1:
        case PERIPH_ID_SDMMC3:
-       case PERIPH_ID_SDMMC4:
                debug("SDMMC device %d not implemented\n", peripheral);
                return -1;
        default:
@@ -794,10 +817,10 @@ static int exynos4x12_pinmux_config(int peripheral, int flags)
                break;
        case PERIPH_ID_SDMMC0:
        case PERIPH_ID_SDMMC2:
+       case PERIPH_ID_SDMMC4:
                return exynos4x12_mmc_config(peripheral, flags);
        case PERIPH_ID_SDMMC1:
        case PERIPH_ID_SDMMC3:
-       case PERIPH_ID_SDMMC4:
                debug("SDMMC device %d not implemented\n", peripheral);
                return -1;
        default: