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pcm970 baseboard: Add SDHC support 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2008-12-19 14:32:07 +01:00
parent f2cb641f56
commit 7c107dcb65
1 changed files with 63 additions and 0 deletions
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63
arch/arm/mach-mx2/pcm970-baseboard.c
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@ -17,16 +17,78 @@
*/
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/irq.h>
#include <asm/mach/arch.h>
#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/mmc.h>
#include <mach/imxfb.h>
#include <mach/iomux.h>
#include "devices.h"
static int pcm970_sdhc2_get_ro(struct device *dev)
{
return gpio_get_value(GPIO_PORTC + 28);
}
static int pcm970_sdhc2_pins[] = {
PB4_PF_SD2_D0,
PB5_PF_SD2_D1,
PB6_PF_SD2_D2,
PB7_PF_SD2_D3,
PB8_PF_SD2_CMD,
PB9_PF_SD2_CLK,
};
static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
{
int ret;
ret = mxc_gpio_setup_multiple_pins(pcm970_sdhc2_pins,
ARRAY_SIZE(pcm970_sdhc2_pins), "sdhc2");
if(ret)
return ret;
ret = request_irq(IRQ_GPIOC(29), detect_irq, 0,
"imx-mmc-detect", data);
if (ret)
goto out_release_gpio;
set_irq_type(IRQ_GPIOC(29), IRQF_TRIGGER_FALLING);
ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
if (ret)
goto out_release_gpio;
mxc_gpio_mode((GPIO_PORTC | 28) | GPIO_GPIO | GPIO_IN);
gpio_direction_input(GPIO_PORTC + 28);
return 0;
out_release_gpio:
mxc_gpio_release_multiple_pins(pcm970_sdhc2_pins,
ARRAY_SIZE(pcm970_sdhc2_pins));
return ret;
}
static void pcm970_sdhc2_exit(struct device *dev, void *data)
{
free_irq(IRQ_GPIOC(29), data);
gpio_free(GPIO_PORTC + 28);
mxc_gpio_release_multiple_pins(pcm970_sdhc2_pins,
ARRAY_SIZE(pcm970_sdhc2_pins));
}
static struct imxmmc_platform_data sdhc_pdata = {
.get_ro = pcm970_sdhc2_get_ro,
.init = pcm970_sdhc2_init,
.exit = pcm970_sdhc2_exit,
};
static int mxc_fb_pins[] = {
PA5_PF_LSCLK, PA6_PF_LD0, PA7_PF_LD1, PA8_PF_LD2,
PA9_PF_LD3, PA10_PF_LD4, PA11_PF_LD5, PA12_PF_LD6,
@ -96,4 +158,5 @@ static struct imx_fb_platform_data pcm038_fb_data = {
void __init pcm970_baseboard_init(void)
{
mxc_register_device(&mxc_fb_device, &pcm038_fb_data);
mxc_register_device(&mxc_sdhc_device1, &sdhc_pdata);
}