EXYNOS: PINMUX: Add pinmux support for I2C

This patch adds pinmux code for I2C.

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index d2b7d2cba7fd81c4d835a4308cf9bcf911555431..d28f05557fe539e0eea500b85440e8c67770af84 100644 (file)
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -184,6 +184,48 @@ static void exynos5_sromc_config(int flags)
        }
 }
 
+static void exynos5_i2c_config(int peripheral, int flags)
+{
+
+       struct exynos5_gpio_part1 *gpio1 =
+               (struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
+
+       switch (peripheral) {
+       case PERIPH_ID_I2C0:
+               s5p_gpio_cfg_pin(&gpio1->b3, 0, GPIO_FUNC(0x2));
+               s5p_gpio_cfg_pin(&gpio1->b3, 1, GPIO_FUNC(0x2));
+               break;
+       case PERIPH_ID_I2C1:
+               s5p_gpio_cfg_pin(&gpio1->b3, 2, GPIO_FUNC(0x2));
+               s5p_gpio_cfg_pin(&gpio1->b3, 3, GPIO_FUNC(0x2));
+               break;
+       case PERIPH_ID_I2C2:
+               s5p_gpio_cfg_pin(&gpio1->a0, 6, GPIO_FUNC(0x3));
+               s5p_gpio_cfg_pin(&gpio1->a0, 7, GPIO_FUNC(0x3));
+               break;
+       case PERIPH_ID_I2C3:
+               s5p_gpio_cfg_pin(&gpio1->a1, 2, GPIO_FUNC(0x3));
+               s5p_gpio_cfg_pin(&gpio1->a1, 3, GPIO_FUNC(0x3));
+               break;
+       case PERIPH_ID_I2C4:
+               s5p_gpio_cfg_pin(&gpio1->a2, 0, GPIO_FUNC(0x3));
+               s5p_gpio_cfg_pin(&gpio1->a2, 1, GPIO_FUNC(0x3));
+               break;
+       case PERIPH_ID_I2C5:
+               s5p_gpio_cfg_pin(&gpio1->a2, 2, GPIO_FUNC(0x3));
+               s5p_gpio_cfg_pin(&gpio1->a2, 3, GPIO_FUNC(0x3));
+               break;
+       case PERIPH_ID_I2C6:
+               s5p_gpio_cfg_pin(&gpio1->b1, 3, GPIO_FUNC(0x4));
+               s5p_gpio_cfg_pin(&gpio1->b1, 4, GPIO_FUNC(0x4));
+               break;
+       case PERIPH_ID_I2C7:
+               s5p_gpio_cfg_pin(&gpio1->b2, 2, GPIO_FUNC(0x3));
+               s5p_gpio_cfg_pin(&gpio1->b2, 3, GPIO_FUNC(0x3));
+               break;
+       }
+}
+
 static int exynos5_pinmux_config(int peripheral, int flags)
 {
        switch (peripheral) {
@@ -201,6 +243,16 @@ static int exynos5_pinmux_config(int peripheral, int flags)
        case PERIPH_ID_SROMC:
                exynos5_sromc_config(flags);
                break;
+       case PERIPH_ID_I2C0:
+       case PERIPH_ID_I2C1:
+       case PERIPH_ID_I2C2:
+       case PERIPH_ID_I2C3:
+       case PERIPH_ID_I2C4:
+       case PERIPH_ID_I2C5:
+       case PERIPH_ID_I2C6:
+       case PERIPH_ID_I2C7:
+               exynos5_i2c_config(peripheral, flags);
+               break;
        default:
                debug("%s: invalid peripheral %d", __func__, peripheral);
                return -1;

diff --git a/arch/arm/include/asm/arch-exynos/periph.h b/arch/arm/include/asm/arch-exynos/periph.h
index 5db25aa88a73fd405aff60c50626688c3b2ee338..b861d7d58425060a3a90d545e42efaa27f82177d 100644 (file)
--- a/arch/arm/include/asm/arch-exynos/periph.h
+++ b/arch/arm/include/asm/arch-exynos/periph.h
@@ -30,6 +30,14 @@
  *
  */
 enum periph_id {
+       PERIPH_ID_I2C0,
+       PERIPH_ID_I2C1,
+       PERIPH_ID_I2C2,
+       PERIPH_ID_I2C3,
+       PERIPH_ID_I2C4,
+       PERIPH_ID_I2C5,
+       PERIPH_ID_I2C6,
+       PERIPH_ID_I2C7,
        PERIPH_ID_SDMMC0,
        PERIPH_ID_SDMMC1,
        PERIPH_ID_SDMMC2,