EXYNOS5: Add pinmux support for SPI

This patch adds pinmux support for SPI channels

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Hatim Ali <hatim.rv@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: 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 4d52a47ad1c357a57f307f6ff3db03d5e88a15e0..f57af43635189bca3c189a1eab36750b4218d23e 100644 (file)
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -394,6 +394,7 @@ static int exynos5260_mmc_config(int peripheral, int flags)
                s5p_gpio_set_pull(bank, i, GPIO_PULL_UP);
                s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
        }
+
        return 0;
 }
 
@@ -591,6 +592,49 @@ static void exynos5430_input_config(int peripheral)
        }
 }
 
+void exynos5_spi_config(int peripheral)
+{
+       int cfg = 0, pin = 0, i;
+       struct s5p_gpio_bank *bank = NULL;
+       struct exynos5_gpio_part1 *gpio1 =
+               (struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
+       struct exynos5_gpio_part2 *gpio2 =
+               (struct exynos5_gpio_part2 *) samsung_get_base_gpio_part2();
+
+       switch (peripheral) {
+       case PERIPH_ID_SPI0:
+               bank = &gpio1->a2;
+               cfg = GPIO_FUNC(0x2);
+               pin = 0;
+               break;
+       case PERIPH_ID_SPI1:
+               bank = &gpio1->a2;
+               cfg = GPIO_FUNC(0x2);
+               pin = 4;
+               break;
+       case PERIPH_ID_SPI2:
+               bank = &gpio1->b1;
+               cfg = GPIO_FUNC(0x5);
+               pin = 1;
+               break;
+       case PERIPH_ID_SPI3:
+               bank = &gpio2->f1;
+               cfg = GPIO_FUNC(0x2);
+               pin = 0;
+               break;
+       case PERIPH_ID_SPI4:
+               for (i = 0; i < 2; i++) {
+                       s5p_gpio_cfg_pin(&gpio2->f0, i + 2, GPIO_FUNC(0x4));
+                       s5p_gpio_cfg_pin(&gpio2->e0, i + 4, GPIO_FUNC(0x4));
+               }
+               break;
+       }
+       if (peripheral != PERIPH_ID_SPI4) {
+               for (i = pin; i < pin + 4; i++)
+                       s5p_gpio_cfg_pin(bank, i, cfg);
+       }
+}
+
 static int exynos5_pinmux_config(int peripheral, int flags)
 {
        switch (peripheral) {
@@ -633,6 +677,13 @@ static int exynos5_pinmux_config(int peripheral, int flags)
                        exynos5_input_config(peripheral);
                }
                break;
+       case PERIPH_ID_SPI0:
+       case PERIPH_ID_SPI1:
+       case PERIPH_ID_SPI2:
+       case PERIPH_ID_SPI3:
+       case PERIPH_ID_SPI4:
+               exynos5_spi_config(peripheral);
+               break;
        default:
                debug("%s: invalid peripheral %d", __func__, peripheral);
                return -1;

diff --git a/arch/arm/include/asm/arch-exynos/periph.h b/arch/arm/include/asm/arch-exynos/periph.h
index 0aae2b0317ae68be209f4e14e8fcd39560a808d5..ebe3a1ae53a68a99b2ea07eadae6fac393d2c8ad 100644 (file)
--- a/arch/arm/include/asm/arch-exynos/periph.h
+++ b/arch/arm/include/asm/arch-exynos/periph.h
@@ -35,6 +35,11 @@ enum periph_id {
        PERIPH_ID_SDMMC2,
        PERIPH_ID_SDMMC3,
        PERIPH_ID_SROMC,
+       PERIPH_ID_SPI0,
+       PERIPH_ID_SPI1,
+       PERIPH_ID_SPI2,
+       PERIPH_ID_SPI3,
+       PERIPH_ID_SPI4,
        PERIPH_ID_UART0,
        PERIPH_ID_UART1,
        PERIPH_ID_UART2,