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ARM: MX3: add MMC/SDHC support to mx31lite-db.c

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Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Daniel Mack 2009-11-19 12:02:07 +01:00 committed by Sascha Hauer
parent b7d91a62cb
commit 364cd540f0
1 changed files with 70 additions and 0 deletions
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70
arch/arm/mach-mx3/mx31lite-db.c
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@ -38,6 +38,7 @@
#include <mach/imx-uart.h>
#include <mach/iomux-mx3.h>
#include <mach/board-mx31lite.h>
#include <mach/mmc.h>
#include "devices.h"
@ -61,11 +62,80 @@ static struct imxuart_platform_data uart_pdata __initdata = {
.flags = IMXUART_HAVE_RTSCTS,
};
/* MMC */
static int gpio_det, gpio_wp;
#define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
static int mxc_mmc1_get_ro(struct device *dev)
{
return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
}
static int mxc_mmc1_init(struct device *dev,
irq_handler_t detect_irq, void *data)
{
int ret;
gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1);
gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6);
mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG);
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_DCD_DCE1), 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 mx31lite_db_init(void)
{
mxc_iomux_setup_multiple_pins(litekit_db_board_pins,
ARRAY_SIZE(litekit_db_board_pins),
"development board pins");
mxc_register_device(&mxc_uart_device0, &uart_pdata);
mxc_register_device(&mxcsdhc_device0, &mmc_pdata);
}