[U-Boot] [PATCH 2/4] EXYNOS4: Add pinmux support for I2C

[Jeong Hyeon Kim]

From: Jeong-Hyeon Kim <jhkim at insignal.co.kr>

This patch adds pinmux support for I2C channels

Signed-off-by: Jeong-Hyeon Kim <jhkim at insignal.co.kr>
---
 arch/arm/cpu/armv7/exynos/pinmux.c |   51 ++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index 364ee2a..d778b46 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -401,6 +401,48 @@ static void exynos4_uart_config(int peripheral)
 	}
 }
 
+static void exynos4_i2c_config(int peripheral, int flags)
+{
+
+	struct exynos4_gpio_part1 *gpio1 =
+		(struct exynos4_gpio_part1 *) samsung_get_base_gpio_part1();
+
+	switch (peripheral) {
+	case PERIPH_ID_I2C0:
+		s5p_gpio_cfg_pin(&gpio1->d1, 0, GPIO_FUNC(0x2));
+		s5p_gpio_cfg_pin(&gpio1->d1, 1, GPIO_FUNC(0x2));
+		break;
+	case PERIPH_ID_I2C1:
+		s5p_gpio_cfg_pin(&gpio1->d1, 2, GPIO_FUNC(0x2));
+		s5p_gpio_cfg_pin(&gpio1->d1, 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->b, 0, GPIO_FUNC(0x3));
+		s5p_gpio_cfg_pin(&gpio1->b, 1, GPIO_FUNC(0x3));
+		break;
+	case PERIPH_ID_I2C5:
+		s5p_gpio_cfg_pin(&gpio1->b, 2, GPIO_FUNC(0x3));
+		s5p_gpio_cfg_pin(&gpio1->b, 3, GPIO_FUNC(0x3));
+		break;
+	case PERIPH_ID_I2C6:
+		s5p_gpio_cfg_pin(&gpio1->c1, 3, GPIO_FUNC(0x4));
+		s5p_gpio_cfg_pin(&gpio1->c1, 4, GPIO_FUNC(0x4));
+		break;
+	case PERIPH_ID_I2C7:
+		s5p_gpio_cfg_pin(&gpio1->d0, 2, GPIO_FUNC(0x3));
+		s5p_gpio_cfg_pin(&gpio1->d0, 3, GPIO_FUNC(0x3));
+		break;
+	}
+}
+
 static int exynos4_pinmux_config(int peripheral, int flags)
 {
 	switch (peripheral) {
@@ -417,6 +459,15 @@ static int exynos4_pinmux_config(int peripheral, int flags)
 	case PERIPH_ID_UART2:
 	case PERIPH_ID_UART3:
 		exynos4_uart_config(peripheral);
+	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:
+		exynos4_i2c_config(peripheral, flags);
 		break;
 	default:
 		debug("%s: invalid peripheral %d", __func__, peripheral);
-- 
1.7.9.5