[ARM] 2914/1: PXA Poodle: Add MMC and UDC support

Patch from Richard Purdie

This patch adds MMC and UDC support to the PXA Poodle platform.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 82 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index 7c4a1cebfd6b..f25638810017 100644
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -30,6 +30,8 @@
 
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/irq.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/udc.h>
 #include <asm/arch/poodle.h>
 #include <asm/arch/pxafb.h>
 
@@ -93,6 +95,83 @@ static struct platform_device locomo_device = {
         .resource       = locomo_resources,
 };
 
+
+/*
+ * MMC/SD Device
+ *
+ * The card detect interrupt isn't debounced so we delay it by 250ms
+ * to give the card a chance to fully insert/eject.
+ */
+static struct pxamci_platform_data poodle_mci_platform_data;
+
+static int poodle_mci_init(struct device *dev, irqreturn_t (*poodle_detect_int)(int, void *, struct pt_regs *), void *data)
+{
+        int err;
+
+        /* setup GPIO for PXA25x MMC controller */
+        pxa_gpio_mode(GPIO6_MMCCLK_MD);
+        pxa_gpio_mode(GPIO8_MMCCS0_MD);
+        pxa_gpio_mode(POODLE_GPIO_nSD_DETECT | GPIO_IN);
+        pxa_gpio_mode(POODLE_GPIO_SD_PWR | GPIO_OUT);
+
+        poodle_mci_platform_data.detect_delay = msecs_to_jiffies(250);
+
+        err = request_irq(POODLE_IRQ_GPIO_nSD_DETECT, poodle_detect_int, SA_INTERRUPT,
+                             "MMC card detect", data);
+        if (err) {
+                printk(KERN_ERR "poodle_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
+                return -1;
+        }
+
+        set_irq_type(POODLE_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
+
+        return 0;
+}
+
+static void poodle_mci_setpower(struct device *dev, unsigned int vdd)
+{
+        struct pxamci_platform_data* p_d = dev->platform_data;
+
+        if (( 1 << vdd) & p_d->ocr_mask)
+                GPSR1 = GPIO_bit(POODLE_GPIO_SD_PWR);
+        else
+                GPCR1 = GPIO_bit(POODLE_GPIO_SD_PWR);
+}
+
+static void poodle_mci_exit(struct device *dev, void *data)
+{
+        free_irq(POODLE_IRQ_GPIO_nSD_DETECT, data);
+}
+
+static struct pxamci_platform_data poodle_mci_platform_data = {
+        .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
+        .init           = poodle_mci_init,
+        .setpower       = poodle_mci_setpower,
+        .exit           = poodle_mci_exit,
+};
+
+
+/*
+ * USB Device Controller
+ */
+static void poodle_udc_command(int cmd)
+{
+        switch(cmd)     {
+        case PXA2XX_UDC_CMD_CONNECT:
+                GPSR(POODLE_GPIO_USB_PULLUP) = GPIO_bit(POODLE_GPIO_USB_PULLUP);
+                break;
+        case PXA2XX_UDC_CMD_DISCONNECT:
+                GPCR(POODLE_GPIO_USB_PULLUP) = GPIO_bit(POODLE_GPIO_USB_PULLUP);
+                break;
+        }
+}
+
+static struct pxa2xx_udc_mach_info udc_info __initdata = {
+        /* no connect GPIO; poodle can't tell connection status */
+        .udc_command            = poodle_udc_command,
+};
+
+
 /* PXAFB device */
 static struct pxafb_mach_info poodle_fb_info __initdata = {
         .pixclock       = 144700,
@@ -164,6 +243,9 @@ static void __init poodle_init(void)
         GPSR2 = 0x00000000;
 
         set_pxa_fb_info(&poodle_fb_info);
+        pxa_gpio_mode(POODLE_GPIO_USB_PULLUP | GPIO_OUT);
+        pxa_set_udc_info(&udc_info);
+        pxa_set_mci_info(&poodle_mci_platform_data);
 
         scoop_num = 1;
         scoop_devs = &poodle_pcmcia_scoop[0];