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-rw-r--r--arch/arm/cpu/armv7/exynos/pinmux.c64
1 files changed, 64 insertions, 0 deletions
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;