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