diff options
Diffstat (limited to 'recipes/linux/linux-2.6.21/mmc-card-detect.patch')
| -rw-r--r-- | recipes/linux/linux-2.6.21/mmc-card-detect.patch | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.21/mmc-card-detect.patch b/recipes/linux/linux-2.6.21/mmc-card-detect.patch new file mode 100644 index 0000000000..26dd970e3b --- /dev/null +++ b/recipes/linux/linux-2.6.21/mmc-card-detect.patch @@ -0,0 +1,80 @@ +Index: linux-2.6.21gum/arch/arm/mach-pxa/gumstix.c +=================================================================== +--- linux-2.6.21gum.orig/arch/arm/mach-pxa/gumstix.c ++++ linux-2.6.21gum/arch/arm/mach-pxa/gumstix.c +@@ -29,19 +29,55 @@ + + #include "generic.h" + +-static int gumstix_mci_init(struct device *dev, irqreturn_t (*lubbock_detect_int)(int, void *, struct pt_regs *), void *data) ++static struct pxamci_platform_data gumstix_mci_platform_data; ++ ++static int gumstix_mci_init(struct device *dev, irqreturn_t (*gumstix_detect_int)(int, void *, struct pt_regs *), void *data) + { +- // Set up MMC controller ++ int err; ++ + pxa_gpio_mode(GPIO6_MMCCLK_MD); + pxa_gpio_mode(GPIO53_MMCCLK_MD); + pxa_gpio_mode(GPIO8_MMCCS0_MD); + ++ pxa_gpio_mode(GUMSTIX_GPIO_nSD_DETECT | GPIO_IN); ++ set_irq_type(GUMSTIX_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE); ++ pxa_gpio_mode(GUMSTIX_GPIO_nSD_WP | GPIO_IN); ++ ++ gumstix_mci_platform_data.detect_delay = msecs_to_jiffies(250); ++ ++ err = request_irq(GUMSTIX_IRQ_GPIO_nSD_DETECT, gumstix_detect_int, SA_INTERRUPT, ++ "MMC card detect", data); ++ if (err) { ++ printk(KERN_ERR "gumstix_mci_init: MMC/SD: can't request MMC card detect IRQ\n"); ++ return -1; ++ } ++ ++ err = set_irq_type(GUMSTIX_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE); ++ + return 0; + } + ++static int gumstix_mci_get_ro(struct device *dev) ++{ ++#ifdef CONFIG_ARCH_GUMSTIX_VERDEX ++ return 0; // microSD is always writable on verdex ++#else ++ int ro; ++ ro = GPLR(GUMSTIX_GPIO_nSD_WP) & GPIO_bit(GUMSTIX_GPIO_nSD_WP); ++ return ro; ++#endif ++} ++ ++static void gumstix_mci_exit(struct device *dev, void *data) ++{ ++ free_irq(GUMSTIX_IRQ_GPIO_nSD_DETECT, data); ++} ++ + static struct pxamci_platform_data gumstix_mci_platform_data = { + .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, +- .init = &gumstix_mci_init, ++ .init = gumstix_mci_init, ++ .get_ro = gumstix_mci_get_ro, ++ .exit = gumstix_mci_exit, + }; + + static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = { +Index: linux-2.6.21gum/include/asm-arm/arch-pxa/gumstix.h +=================================================================== +--- linux-2.6.21gum.orig/include/asm-arm/arch-pxa/gumstix.h ++++ linux-2.6.21gum/include/asm-arm/arch-pxa/gumstix.h +@@ -36,6 +36,12 @@ + #define GPIO_GUMSTIX_USB_GPIOx_CON_MD (GPIO_GUMSTIX_USB_GPIOx | GPIO_OUT) + #define GPIO_GUMSTIX_USB_GPIOx_DIS_MD (GPIO_GUMSTIX_USB_GPIOx | GPIO_IN) + ++/* ++ * SD/MMC definitions ++ */ ++#define GUMSTIX_GPIO_nSD_WP 22 /* SD Write Protect */ ++#define GUMSTIX_GPIO_nSD_DETECT 11 /* MMC/SD Card Detect */ ++#define GUMSTIX_IRQ_GPIO_nSD_DETECT IRQ_GPIO(GUMSTIX_GPIO_nSD_DETECT) + + /* + * SMC Ethernet definitions |