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author | Sascha Hauer <s.hauer@pengutronix.de> | 2008-12-19 13:32:07 (GMT) |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-03-13 09:34:39 (GMT) |
commit | 7c107dcb652c2101426adfc3193140db95b44594 (patch) | |
tree | 50aa0256a8fd8fe730855a276fb396d32ed1bc95 /arch/arm | |
parent | f2cb641f565dccebfa934b1a940bc6517734d391 (diff) | |
download | linux-fsl-qoriq-7c107dcb652c2101426adfc3193140db95b44594.tar.xz |
pcm970 baseboard: Add SDHC support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/mach-mx2/pcm970-baseboard.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/arm/mach-mx2/pcm970-baseboard.c b/arch/arm/mach-mx2/pcm970-baseboard.c index 232e041..bf4e520 100644 --- a/arch/arm/mach-mx2/pcm970-baseboard.c +++ b/arch/arm/mach-mx2/pcm970-baseboard.c @@ -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); } |