Commit d0b1eabc authored by Daniel Mack's avatar Daniel Mack Committed by Sascha Hauer
Browse files

ARM: MX3: add MMC suuport for lilly1131-db 



Signed-off-by: default avatarDaniel Mack <daniel@caiaq.de>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent cbaa6ca1

arch/arm/mach-mx3/mx31lilly-db.c

+67 −0
Original line number Diff line number Diff line
@@ -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);

}