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

[Jeong Hyeon Kim]

From: Jeong-Hyeon Kim <jh...@insignal.co.kr>

This patch adds pinmux support for I2C channels

Signed-off-by: Jeong-Hyeon Kim <jh...@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

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