[U-Boot] [PATCH v3 3/6] arm:exynos4:pinmux: Modify the gpio function for mmc

[Piotr Wilczek]

This patch add pinmux settings for Exynos4 for mmc0 and mmc2

Signed-off-by: Piotr Wilczek <p.wilc...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
CC: Minkyu Kang <mk7.k...@samsung.com>
---
Changes for v2:
- mmc initialisation code moved to pinmux instead of creating a new common code 
file
Changes for v3:
- no changes

 arch/arm/cpu/armv7/exynos/pinmux.c        |   56 +++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-exynos/periph.h |    1 +
 2 files changed, 57 insertions(+), 0 deletions(-)

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c 
b/arch/arm/cpu/armv7/exynos/pinmux.c
index d2b7d2c..84ee05c 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -209,10 +209,66 @@ static int exynos5_pinmux_config(int peripheral, int 
flags)
        return 0;
 }
 
+static int exynos4_mmc_config(int peripheral, int flags)
+{
+       struct exynos4_gpio_part2 *gpio2 =
+               (struct exynos4_gpio_part2 *)samsung_get_base_gpio_part2();
+       struct s5p_gpio_bank *bank, *bank_ext;
+       int i;
+
+       switch (peripheral) {
+       case PERIPH_ID_SDMMC0:
+               bank = &gpio2->k0;
+               bank_ext = &gpio2->k1;
+               break;
+       case PERIPH_ID_SDMMC2:
+               bank = &gpio2->k2;
+               bank_ext = &gpio2->k3;
+               break;
+       }
+       for (i = 0; i < 7; i++) {
+               if (i == 2)
+                       continue;
+               s5p_gpio_cfg_pin(bank, i,  GPIO_FUNC(0x2));
+               s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
+               s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
+       }
+       if (flags & PINMUX_FLAG_8BIT_MODE) {
+               for (i = 3; i < 7; i++) {
+                       s5p_gpio_cfg_pin(bank_ext, i,  GPIO_FUNC(0x3));
+                       s5p_gpio_set_pull(bank_ext, i, GPIO_PULL_NONE);
+                       s5p_gpio_set_drv(bank_ext, i, GPIO_DRV_4X);
+               }
+       }
+
+       return 0;
+}
+
+static int exynos4_pinmux_config(int peripheral, int flags)
+{
+       switch (peripheral) {
+       case PERIPH_ID_SDMMC0:
+       case PERIPH_ID_SDMMC2:
+               return exynos4_mmc_config(peripheral, flags);
+       case PERIPH_ID_SDMMC1:
+       case PERIPH_ID_SDMMC3:
+       case PERIPH_ID_SDMMC4:
+               printf("SDMMC device %d not implemented\n", peripheral);
+               return -1;
+       default:
+               debug("%s: invalid peripheral %d", __func__, peripheral);
+               return -1;
+       }
+
+       return 0;
+}
+
 int exynos_pinmux_config(int peripheral, int flags)
 {
        if (cpu_is_exynos5())
                return exynos5_pinmux_config(peripheral, flags);
+       else if (cpu_is_exynos4())
+               return exynos4_pinmux_config(peripheral, flags);
        else {
                debug("pinmux functionality not supported\n");
                return -1;
diff --git a/arch/arm/include/asm/arch-exynos/periph.h 
b/arch/arm/include/asm/arch-exynos/periph.h
index 5db25aa..4e1da82 100644
--- a/arch/arm/include/asm/arch-exynos/periph.h
+++ b/arch/arm/include/asm/arch-exynos/periph.h
@@ -34,6 +34,7 @@ enum periph_id {
        PERIPH_ID_SDMMC1,
        PERIPH_ID_SDMMC2,
        PERIPH_ID_SDMMC3,
+       PERIPH_ID_SDMMC4,
        PERIPH_ID_SROMC,
        PERIPH_ID_UART0,
        PERIPH_ID_UART1,
-- 
1.7.5.4

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