davinci: MMC/SD support for Omapl138-Hawkboard

This patch adds MMC/SD support for the Hawkboard-L138 system

Signed-off-by: Victor Rodriguez <vm.rod25@gmail.com>
Tested-by: Rene Gonzalez <renegs.2378@gmail.com>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c
index cefff9b86f72..eeb1cad02503 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -22,6 +22,8 @@
 #include <mach/mux.h>
 
 #define HAWKBOARD_PHY_ID                "0:07"
+#define DA850_HAWK_MMCSD_CD_PIN         GPIO_TO_PIN(3, 12)
+#define DA850_HAWK_MMCSD_WP_PIN         GPIO_TO_PIN(3, 13)
 
 static short omapl138_hawk_mii_pins[] __initdata = {
         DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
@@ -110,6 +112,74 @@ static struct edma_rsv_info *da850_edma_rsv[2] = {
         &da850_edma_cc1_rsv,
 };
 
+static const short hawk_mmcsd0_pins[] = {
+        DA850_MMCSD0_DAT_0, DA850_MMCSD0_DAT_1, DA850_MMCSD0_DAT_2,
+        DA850_MMCSD0_DAT_3, DA850_MMCSD0_CLK, DA850_MMCSD0_CMD,
+        DA850_GPIO3_12, DA850_GPIO3_13,
+        -1
+};
+
+static int da850_hawk_mmc_get_ro(int index)
+{
+        return gpio_get_value(DA850_HAWK_MMCSD_WP_PIN);
+}
+
+static int da850_hawk_mmc_get_cd(int index)
+{
+        return !gpio_get_value(DA850_HAWK_MMCSD_CD_PIN);
+}
+
+static struct davinci_mmc_config da850_mmc_config = {
+        .get_ro         = da850_hawk_mmc_get_ro,
+        .get_cd         = da850_hawk_mmc_get_cd,
+        .wires          = 4,
+        .max_freq       = 50000000,
+        .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
+        .version        = MMC_CTLR_VERSION_2,
+};
+
+static __init void omapl138_hawk_mmc_init(void)
+{
+        int ret;
+
+        ret = davinci_cfg_reg_list(hawk_mmcsd0_pins);
+        if (ret) {
+                pr_warning("%s: MMC/SD0 mux setup failed: %d\n",
+                        __func__, ret);
+                return;
+        }
+
+        ret = gpio_request_one(DA850_HAWK_MMCSD_CD_PIN,
+                        GPIOF_DIR_IN, "MMC CD");
+        if (ret < 0) {
+                pr_warning("%s: can not open GPIO %d\n",
+                        __func__, DA850_HAWK_MMCSD_CD_PIN);
+                return;
+        }
+
+        ret = gpio_request_one(DA850_HAWK_MMCSD_WP_PIN,
+                        GPIOF_DIR_IN, "MMC WP");
+        if (ret < 0) {
+                pr_warning("%s: can not open GPIO %d\n",
+                        __func__, DA850_HAWK_MMCSD_WP_PIN);
+                goto mmc_setup_wp_fail;
+        }
+
+        ret = da8xx_register_mmcsd0(&da850_mmc_config);
+        if (ret) {
+                pr_warning("%s: MMC/SD0 registration failed: %d\n",
+                        __func__, ret);
+                goto mmc_setup_mmcsd_fail;
+        }
+
+        return;
+
+mmc_setup_mmcsd_fail:
+        gpio_free(DA850_HAWK_MMCSD_WP_PIN);
+mmc_setup_wp_fail:
+        gpio_free(DA850_HAWK_MMCSD_CD_PIN);
+}
+
 static struct davinci_uart_config omapl138_hawk_uart_config __initdata = {
         .enabled_uarts = 0x7,
 };
@@ -127,6 +197,8 @@ static __init void omapl138_hawk_init(void)
                 pr_warning("%s: EDMA registration failed: %d\n",
                         __func__, ret);
 
+        omapl138_hawk_mmc_init();
+
         ret = da8xx_register_watchdog();
         if (ret)
                 pr_warning("omapl138_hawk_init: "