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https://github.com/openwrt/openwrt.git
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77 lines
2.3 KiB
Diff
77 lines
2.3 KiB
Diff
--- a/arch/arm/mach-pxa/gumstix.c
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+++ b/arch/arm/mach-pxa/gumstix.c
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@@ -29,19 +29,55 @@
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#include "generic.h"
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-static int gumstix_mci_init(struct device *dev, irqreturn_t (*lubbock_detect_int)(int, void *, struct pt_regs *), void *data)
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+static struct pxamci_platform_data gumstix_mci_platform_data;
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+
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+static int gumstix_mci_init(struct device *dev, irqreturn_t (*gumstix_detect_int)(int, void *, struct pt_regs *), void *data)
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{
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- // Set up MMC controller
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+ int err;
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+
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pxa_gpio_mode(GPIO6_MMCCLK_MD);
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pxa_gpio_mode(GPIO53_MMCCLK_MD);
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pxa_gpio_mode(GPIO8_MMCCS0_MD);
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+ pxa_gpio_mode(GUMSTIX_GPIO_nSD_DETECT | GPIO_IN);
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+ set_irq_type(GUMSTIX_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
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+ pxa_gpio_mode(GUMSTIX_GPIO_nSD_WP | GPIO_IN);
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+
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+ gumstix_mci_platform_data.detect_delay = msecs_to_jiffies(250);
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+
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+ err = request_irq(GUMSTIX_IRQ_GPIO_nSD_DETECT, gumstix_detect_int, SA_INTERRUPT,
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+ "MMC card detect", data);
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+ if (err) {
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+ printk(KERN_ERR "gumstix_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
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+ return -1;
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+ }
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+
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+ err = set_irq_type(GUMSTIX_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
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+
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return 0;
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}
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+static int gumstix_mci_get_ro(struct device *dev)
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+{
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+#ifdef CONFIG_ARCH_GUMSTIX_VERDEX
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+ return 0; // microSD is always writable on verdex
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+#else
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+ int ro;
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+ ro = GPLR(GUMSTIX_GPIO_nSD_WP) & GPIO_bit(GUMSTIX_GPIO_nSD_WP);
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+ return ro;
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+#endif
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+}
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+
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+static void gumstix_mci_exit(struct device *dev, void *data)
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+{
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+ free_irq(GUMSTIX_IRQ_GPIO_nSD_DETECT, data);
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+}
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+
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static struct pxamci_platform_data gumstix_mci_platform_data = {
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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- .init = &gumstix_mci_init,
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+ .init = gumstix_mci_init,
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+ .get_ro = gumstix_mci_get_ro,
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+ .exit = gumstix_mci_exit,
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};
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static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = {
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--- a/include/asm-arm/arch-pxa/gumstix.h
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+++ b/include/asm-arm/arch-pxa/gumstix.h
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@@ -36,6 +36,12 @@
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#define GPIO_GUMSTIX_USB_GPIOx_CON_MD (GPIO_GUMSTIX_USB_GPIOx | GPIO_OUT)
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#define GPIO_GUMSTIX_USB_GPIOx_DIS_MD (GPIO_GUMSTIX_USB_GPIOx | GPIO_IN)
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+/*
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+ * SD/MMC definitions
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+ */
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+#define GUMSTIX_GPIO_nSD_WP 22 /* SD Write Protect */
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+#define GUMSTIX_GPIO_nSD_DETECT 11 /* MMC/SD Card Detect */
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+#define GUMSTIX_IRQ_GPIO_nSD_DETECT IRQ_GPIO(GUMSTIX_GPIO_nSD_DETECT)
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/*
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* SMC Ethernet definitions
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