EXYNOS4210: Configure GPIO for uart

[karo-tx-uboot.git] / arch / arm / cpu / armv7 / exynos / pinmux.c

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index bd499b47614ca2b1af126642931fa627d14f45ca..2042062344edfc8d599f94fddf58f9006d9d81b0 100644 (file)
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -408,9 +408,49 @@ static int exynos4_mmc_config(int peripheral, int flags)
        return 0;
 }
 
+static void exynos4_uart_config(int peripheral)
+{
+       struct exynos4_gpio_part1 *gpio1 =
+               (struct exynos4_gpio_part1 *)samsung_get_base_gpio_part1();
+       struct s5p_gpio_bank *bank;
+       int i, start, count;
+
+       switch (peripheral) {
+       case PERIPH_ID_UART0:
+               bank = &gpio1->a0;
+               start = 0;
+               count = 4;
+               break;
+       case PERIPH_ID_UART1:
+               bank = &gpio1->a0;
+               start = 4;
+               count = 4;
+               break;
+       case PERIPH_ID_UART2:
+               bank = &gpio1->a1;
+               start = 0;
+               count = 4;
+               break;
+       case PERIPH_ID_UART3:
+               bank = &gpio1->a1;
+               start = 4;
+               count = 2;
+               break;
+       }
+       for (i = start; i < start + count; i++) {
+               s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
+               s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
+       }
+}
 static int exynos4_pinmux_config(int peripheral, int flags)
 {
        switch (peripheral) {
+       case PERIPH_ID_UART0:
+       case PERIPH_ID_UART1:
+       case PERIPH_ID_UART2:
+       case PERIPH_ID_UART3:
+               exynos4_uart_config(peripheral);
+               break;
        case PERIPH_ID_I2C0:
        case PERIPH_ID_I2C1:
        case PERIPH_ID_I2C2: