ARM: MX3: add MMC suuport for lilly1131-db

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 67 insertions, 0 deletions

diff --git a/arch/arm/mach-mx3/mx31lilly-db.c b/arch/arm/mach-mx3/mx31lilly-db.c
index 73e1e5e3cc37..b7821163fc17 100644
--- a/arch/arm/mach-mx3/mx31lilly-db.c
+++ b/arch/arm/mach-mx3/mx31lilly-db.c
@@ -27,6 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/init.h>
+#include <linux/gpio.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -37,6 +38,7 @@
 #include <mach/imx-uart.h>
 #include <mach/iomux-mx3.h>
 #include <mach/board-mx31lilly.h>
+#include <mach/mmc.h>
 
 #include "devices.h"
 
@@ -51,6 +53,12 @@ static unsigned int lilly_db_board_pins[] __initdata = {
         MX31_PIN_RTS1__RTS1,
         MX31_PIN_TXD1__TXD1,
         MX31_PIN_RXD1__RXD1,
+        MX31_PIN_SD1_DATA3__SD1_DATA3,
+        MX31_PIN_SD1_DATA2__SD1_DATA2,
+        MX31_PIN_SD1_DATA1__SD1_DATA1,
+        MX31_PIN_SD1_DATA0__SD1_DATA0,
+        MX31_PIN_SD1_CLK__SD1_CLK,
+        MX31_PIN_SD1_CMD__SD1_CMD,
 };
 
 /* UART */
@@ -58,11 +66,70 @@ static struct imxuart_platform_data uart_pdata __initdata = {
         .flags = IMXUART_HAVE_RTSCTS,
 };
 
+/* MMC support */
+
+static int mxc_mmc1_get_ro(struct device *dev)
+{
+        return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
+}
+
+static int gpio_det, gpio_wp;
+
+static int mxc_mmc1_init(struct device *dev,
+                         irq_handler_t detect_irq, void *data)
+{
+        int ret;
+
+        gpio_det = IOMUX_TO_GPIO(MX31_PIN_GPIO1_1);
+        gpio_wp = IOMUX_TO_GPIO(MX31_PIN_LCS0);
+
+        ret = gpio_request(gpio_det, "MMC detect");
+        if (ret)
+                return ret;
+
+        ret = gpio_request(gpio_wp, "MMC w/p");
+        if (ret)
+                goto exit_free_det;
+
+        gpio_direction_input(gpio_det);
+        gpio_direction_input(gpio_wp);
+
+        ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO1_1), detect_irq,
+                          IRQF_DISABLED | IRQF_TRIGGER_FALLING,
+                          "MMC detect", data);
+        if (ret)
+                goto exit_free_wp;
+
+        return 0;
+
+exit_free_wp:
+        gpio_free(gpio_wp);
+
+exit_free_det:
+        gpio_free(gpio_det);
+
+        return ret;
+}
+
+static void mxc_mmc1_exit(struct device *dev, void *data)
+{
+        gpio_free(gpio_det);
+        gpio_free(gpio_wp);
+        free_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO1_1), data);
+}
+
+static struct imxmmc_platform_data mmc_pdata = {
+        .get_ro = mxc_mmc1_get_ro,
+        .init   = mxc_mmc1_init,
+        .exit   = mxc_mmc1_exit,
+};
+
 void __init mx31lilly_db_init(void)
 {
         mxc_iomux_setup_multiple_pins(lilly_db_board_pins,
                                         ARRAY_SIZE(lilly_db_board_pins),
                                         "development board pins");
         mxc_register_device(&mxc_uart_device0, &uart_pdata);
+        mxc_register_device(&mxcsdhc_device0, &mmc_pdata);
 }