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Commit dddd4a49 authored by Sascha Hauer's avatar Sascha Hauer
Browse files

pcm037: add SDHC card detection 



Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 01ac7d58

arch/arm/mach-mx3/pcm037.c

+30 −3
Original line number Diff line number Diff line
@@ -28,6 +28,9 @@ 
#include <linux/interrupt.h>

#include <linux/i2c.h>

#include <linux/i2c/at24.h>

#include <linux/delay.h>

#include <linux/spi/spi.h>

#include <linux/irq.h>



#include <mach/hardware.h>

#include <asm/mach-types.h>
@@ -218,17 +221,41 @@ static struct i2c_board_info pcm037_i2c_devices[] = { 
};

#endif



static int pcm970_sdhc1_init(struct device *dev, irq_handler_t h, void *data)

/* Not connected by default */

#ifdef PCM970_SDHC_RW_SWITCH

static int pcm970_sdhc1_get_ro(struct device *dev)

{

	return 0;

	return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_SFS6));

}

#endif



static int pcm970_sdhc1_init(struct device *dev, irq_handler_t detect_irq,

		void *data)

{

	int ret;

	int gpio_det, gpio_wp;



	gpio_det = IOMUX_TO_GPIO(MX31_PIN_SCK6);

	gpio_wp = IOMUX_TO_GPIO(MX31_PIN_SFS6);



	gpio_direction_input(gpio_det);

	gpio_direction_input(gpio_wp);



	ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_SCK6), detect_irq,

			IRQF_DISABLED | IRQF_TRIGGER_FALLING,

				"sdhc-detect", data);

	return ret;

}



static void pcm970_sdhc1_exit(struct device *dev, void *data)

{

	free_irq(IOMUX_TO_IRQ(MX31_PIN_SCK6), data);

}



/* No card and rw detection at the moment */

static struct imxmmc_platform_data sdhc_pdata = {

#ifdef PCM970_SDHC_RW_SWITCH

	.get_ro = pcm970_sdhc1_get_ro,

#endif

	.init = pcm970_sdhc1_init,

	.exit = pcm970_sdhc1_exit,

};