Commit 361778d6 authored by Eric Miao's avatar Eric Miao
Browse files

[ARM] pxa/littleton: add support for the Micro-SD slot (MMC1) 



Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent f6394e26

arch/arm/mach-pxa/littleton.c

+63 −0
Original line number Diff line number Diff line
@@ -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 @@ static mfp_cfg_t littleton_mfp_cfg[] __initdata = { 
	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 void __init littleton_init_keypad(void) 
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 @@ static void __init littleton_init(void) 


	littleton_init_spi();

	littleton_init_i2c();

	littleton_init_mmc();

	littleton_init_lcd();

	littleton_init_keypad();

	littleton_init_nand();