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exynos:pinmux: Add pinmux support for i2c

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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>
This commit is contained in:
Piotr Wilczek 2012-11-20 02:19:04 +00:00 committed by Tom Rini
parent 847ab8f6e2
commit 89bd58a1e9
1 changed files with 64 additions and 0 deletions
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64
arch/arm/cpu/armv7/exynos/pinmux.c
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@ -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;