davinci: MMC platform support

Add SoC and platform-specific data and init for MMC driver.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c
index 6af3c6c863ab..087441313dd7 100644
--- a/arch/arm/mach-davinci/board-dm355-evm.c
+++ b/arch/arm/mach-davinci/board-dm355-evm.c
@@ -36,6 +36,7 @@
 #include <mach/i2c.h>
 #include <mach/serial.h>
 #include <mach/nand.h>
+#include <mach/mmc.h>
 
 #define DAVINCI_ASYNC_EMIF_CONTROL_BASE         0x01e10000
 #define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE        0x02000000
@@ -191,6 +192,31 @@ static void __init dm355_evm_map_io(void)
         dm355_init();
 }
 
+static int dm355evm_mmc_get_cd(int module)
+{
+        if (!gpio_is_valid(dm355evm_mmc_gpios))
+                return -ENXIO;
+        /* low == card present */
+        return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1);
+}
+
+static int dm355evm_mmc_get_ro(int module)
+{
+        if (!gpio_is_valid(dm355evm_mmc_gpios))
+                return -ENXIO;
+        /* high == card's write protect switch active */
+        return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0);
+}
+
+static struct davinci_mmc_config dm355evm_mmc_config = {
+        .get_cd         = dm355evm_mmc_get_cd,
+        .get_ro         = dm355evm_mmc_get_ro,
+        .wires          = 4,
+        .max_freq       = 50000000,
+        .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
+        .version        = MMC_CTLR_VERSION_1,
+};
+
 /* Don't connect anything to J10 unless you're only using USB host
  * mode *and* have to do so with some kind of gender-bender.  If
  * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
@@ -249,6 +275,9 @@ static __init void dm355_evm_init(void)
         /* irlml6401 switches over 1A in under 8 msec */
         setup_usb(500, 8);
 
+        davinci_setup_mmc(0, &dm355evm_mmc_config);
+        davinci_setup_mmc(1, &dm355evm_mmc_config);
+
         dm355_init_spi0(BIT(0), dm355_evm_spi_info,
                         ARRAY_SIZE(dm355_evm_spi_info));
 }