mfd: dm355 evm MMC/SD card detection

Support card detect and writeprotect switches on DM355 EVM.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c
index 4214b3f7242..7ac12cb0be4 100644
--- a/drivers/mfd/dm355evm_msp.c
+++ b/drivers/mfd/dm355evm_msp.c
@@ -107,6 +107,9 @@ static const u8 msp_gpios[] = {
         MSP_GPIO(0, SWITCH1), MSP_GPIO(1, SWITCH1),
         MSP_GPIO(2, SWITCH1), MSP_GPIO(3, SWITCH1),
         MSP_GPIO(4, SWITCH1),
+        /* switches on MMC/SD sockets */
+        MSP_GPIO(1, SDMMC), MSP_GPIO(2, SDMMC), /* mmc0 WP, nCD */
+        MSP_GPIO(3, SDMMC), MSP_GPIO(4, SDMMC), /* mmc1 WP, nCD */
 };
 
 #define MSP_GPIO_REG(offset)    (msp_gpios[(offset)] >> 3)
@@ -304,6 +307,13 @@ static int add_children(struct i2c_client *client)
                 gpio_export(gpio, false);
         }
 
+        /* MMC/SD inputs -- right after the last config input */
+        if (client->dev.platform_data) {
+                void (*mmcsd_setup)(unsigned) = client->dev.platform_data;
+
+                mmcsd_setup(dm355evm_msp_gpio.base + 8 + 5);
+        }
+
         /* RTC is a 32 bit counter, no alarm */
         if (msp_has_rtc()) {
                 child = add_child(client, "rtc-dm355evm",