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arm:exynos4:pinmux: Modify the gpio function for mmc 

This patch add pinmux settings for Exynos4 for mmc0 and mmc2

Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Piotr Wilczek 2012-09-20 00:19:57 +00:00 committed by Minkyu Kang
parent 11c5bc0b9d
commit a3eab2ac41
2 changed files with 59 additions and 0 deletions
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58
arch/arm/cpu/armv7/exynos/pinmux.c
View File

@ -265,10 +265,68 @@ static int exynos5_pinmux_config(int peripheral, int flags)
return 0;
}
static int exynos4_mmc_config(int peripheral, int flags)
{
struct exynos4_gpio_part2 *gpio2 =
(struct exynos4_gpio_part2 *)samsung_get_base_gpio_part2();
struct s5p_gpio_bank *bank, *bank_ext;
int i;
switch (peripheral) {
case PERIPH_ID_SDMMC0:
bank = &gpio2->k0;
bank_ext = &gpio2->k1;
break;
case PERIPH_ID_SDMMC2:
bank = &gpio2->k2;
bank_ext = &gpio2->k3;
break;
default:
return -1;
}
for (i = 0; i < 7; i++) {
if (i == 2)
continue;
s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
}
if (flags & PINMUX_FLAG_8BIT_MODE) {
for (i = 3; i < 7; i++) {
s5p_gpio_cfg_pin(bank_ext, i, GPIO_FUNC(0x3));
s5p_gpio_set_pull(bank_ext, i, GPIO_PULL_NONE);
s5p_gpio_set_drv(bank_ext, i, GPIO_DRV_4X);
}
}
return 0;
}
static int exynos4_pinmux_config(int peripheral, int flags)
{
switch (peripheral) {
case PERIPH_ID_SDMMC0:
case PERIPH_ID_SDMMC2:
return exynos4_mmc_config(peripheral, flags);
case PERIPH_ID_SDMMC1:
case PERIPH_ID_SDMMC3:
case PERIPH_ID_SDMMC4:
printf("SDMMC device %d not implemented\n", peripheral);
return -1;
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;

1
arch/arm/include/asm/arch-exynos/periph.h
View File

@ -42,6 +42,7 @@ enum periph_id {
PERIPH_ID_SDMMC1,
PERIPH_ID_SDMMC2,
PERIPH_ID_SDMMC3,
PERIPH_ID_SDMMC4,
PERIPH_ID_SROMC,
PERIPH_ID_UART0,
PERIPH_ID_UART1,