[ARM] pxa/littleton: add support for the Micro-SD slot (MMC1)
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-pxa/littleton.c b/arch/arm/mach-pxa/littleton.c
index 94a3232..55b3788 100644
--- a/arch/arm/mach-pxa/littleton.c
+++ b/arch/arm/mach-pxa/littleton.c
@@ -42,6 +42,7 @@
#include <mach/pxa300.h>
#include <mach/pxafb.h>
#include <mach/ssp.h>
+#include <mach/mmc.h>
#include <mach/pxa2xx_spi.h>
#include <plat/i2c.h>
#include <mach/pxa27x_keypad.h>
@@ -50,6 +51,8 @@
#include "generic.h"
+#define GPIO_MMC1_CARD_DETECT mfp_to_gpio(MFP_PIN_GPIO15)
+
/* Littleton MFP configurations */
static mfp_cfg_t littleton_mfp_cfg[] __initdata = {
/* LCD */
@@ -98,6 +101,15 @@
GPIO123_KP_MKOUT_2,
GPIO124_KP_MKOUT_3,
GPIO125_KP_MKOUT_4,
+
+ /* MMC1 */
+ GPIO3_MMC1_DAT0,
+ GPIO4_MMC1_DAT1,
+ GPIO5_MMC1_DAT2,
+ GPIO6_MMC1_DAT3,
+ GPIO7_MMC1_CLK,
+ GPIO8_MMC1_CMD,
+ GPIO15_GPIO, /* card detect */
};
static struct resource smc91x_resources[] = {
@@ -252,6 +264,56 @@
static inline void littleton_init_keypad(void) {}
#endif
+#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
+static int littleton_mci_init(struct device *dev,
+ irq_handler_t littleton_detect_int, void *data)
+{
+ int err, gpio_cd = GPIO_MMC1_CARD_DETECT;
+
+ err = gpio_request(gpio_cd, "mmc card detect");
+ if (err)
+ goto err_request_cd;
+
+ gpio_direction_input(gpio_cd);
+
+ err = request_irq(gpio_to_irq(gpio_cd), littleton_detect_int,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ "mmc card detect", data);
+ if (err) {
+ dev_err(dev, "failed to request card detect IRQ\n");
+ goto err_request_irq;
+ }
+ return 0;
+
+err_request_irq:
+ gpio_free(gpio_cd);
+err_request_cd:
+ return err;
+}
+
+static void littleton_mci_exit(struct device *dev, void *data)
+{
+ int gpio_cd = GPIO_MMC1_CARD_DETECT;
+
+ free_irq(gpio_to_irq(gpio_cd), data);
+ gpio_free(gpio_cd);
+}
+
+static struct pxamci_platform_data littleton_mci_platform_data = {
+ .detect_delay = 20,
+ .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
+ .init = littleton_mci_init,
+ .exit = littleton_mci_exit,
+};
+
+static void __init littleton_init_mmc(void)
+{
+ pxa_set_mci_info(&littleton_mci_platform_data);
+}
+#else
+static inline void littleton_init_mmc(void) {}
+#endif
+
#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
static struct mtd_partition littleton_nand_partitions[] = {
[0] = {
@@ -392,6 +454,7 @@
littleton_init_spi();
littleton_init_i2c();
+ littleton_init_mmc();
littleton_init_lcd();
littleton_init_keypad();
littleton_init_nand();