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>

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;

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,