diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-03-10 11:56:10 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-05-07 16:15:26 +0200 |
| commit | dddd4a493dfa9ff2640ff683f04d0f3c8c287111 (patch) | |
| tree | 142212c172bb3e0b6a5fef539e7859283c2d1829 /arch/arm/mach-mx3/pcm037.c | |
| parent | 01ac7d584d7299c787bb64067231a06d3b5e52e3 (diff) | |
pcm037: add SDHC card detection
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mx3/pcm037.c')
| -rw-r--r-- | arch/arm/mach-mx3/pcm037.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/arch/arm/mach-mx3/pcm037.c b/arch/arm/mach-mx3/pcm037.c index c26919d05b1..91495cfeb79 100644 --- a/arch/arm/mach-mx3/pcm037.c +++ b/arch/arm/mach-mx3/pcm037.c @@ -28,6 +28,9 @@ #include <linux/interrupt.h> #include <linux/i2c.h> #include <linux/i2c/at24.h> +#include <linux/delay.h> +#include <linux/spi/spi.h> +#include <linux/irq.h> #include <mach/hardware.h> #include <asm/mach-types.h> @@ -218,17 +221,41 @@ static struct i2c_board_info pcm037_i2c_devices[] = { }; #endif -static int pcm970_sdhc1_init(struct device *dev, irq_handler_t h, void *data) +/* Not connected by default */ +#ifdef PCM970_SDHC_RW_SWITCH +static int pcm970_sdhc1_get_ro(struct device *dev) { - return 0; + return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_SFS6)); +} +#endif + +static int pcm970_sdhc1_init(struct device *dev, irq_handler_t detect_irq, + void *data) +{ + int ret; + int gpio_det, gpio_wp; + + gpio_det = IOMUX_TO_GPIO(MX31_PIN_SCK6); + gpio_wp = IOMUX_TO_GPIO(MX31_PIN_SFS6); + + gpio_direction_input(gpio_det); + gpio_direction_input(gpio_wp); + + ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_SCK6), detect_irq, + IRQF_DISABLED | IRQF_TRIGGER_FALLING, + "sdhc-detect", data); + return ret; } static void pcm970_sdhc1_exit(struct device *dev, void *data) { + free_irq(IOMUX_TO_IRQ(MX31_PIN_SCK6), data); } -/* No card and rw detection at the moment */ static struct imxmmc_platform_data sdhc_pdata = { +#ifdef PCM970_SDHC_RW_SWITCH + .get_ro = pcm970_sdhc1_get_ro, +#endif .init = pcm970_sdhc1_init, .exit = pcm970_sdhc1_exit, }; |