From: Piotr Wilczek <p.wilczek@samsung.com>
Date: Tue, 20 Nov 2012 02:19:04 +0000 (+0000)
Subject: exynos:pinmux: Add pinmux support for i2c
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=89bd58a1e9cb482109498ac38b38fc39d22fb421;p=u-boot.git

exynos:pinmux: Add pinmux support for i2c

This patch add pinmux for I2C for Exynos4

Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Minkyu Kang <mk7.kang@samsung.com>
---

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index 7776add9db..44ce0726e9 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -265,10 +265,74 @@ static int exynos5_pinmux_config(int peripheral, int flags)
 	return 0;
 }
 
+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, 2, GPIO_FUNC(0x3));
+		s5p_gpio_cfg_pin(&gpio1->b, 3, GPIO_FUNC(0x3));
+		break;
+	case PERIPH_ID_I2C5:
+		s5p_gpio_cfg_pin(&gpio1->b, 6, GPIO_FUNC(0x3));
+		s5p_gpio_cfg_pin(&gpio1->b, 7, 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) {
+	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);
+		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;