[ARM PATCH] 1711/1: pxa2xx_udc (3/5) add udc platform_device, platform_data

Patch from David Brownell

This declares the pxa2xx_udc platform device, defines
the platform_data made available to that driver, and
allows different machines to customize that platform_data.

Same idea as in the FB driver.  Be careful of patch conflicts
applying to other kernels, mostly due to different platform
devices being listed.

arch/arm/mach-pxa/generic.c

@@ -30,6 +30,8 @@
 #include <asm/pgtable.h>
 #include <asm/mach/map.h>
 
+#include <asm/arch/udc.h>
+
 #include "generic.h"
 
 /*
@@ -168,8 +170,44 @@ static struct platform_device pxamci_device = {
 	.resource	= pxamci_resources,
 };
 
+
+static struct pxa2xx_udc_mach_info pxa_udc_info;
+
+void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
+{
+	memcpy(&pxa_udc_info, info, sizeof *info);
+}
+EXPORT_SYMBOL(pxa_set_udc_info);
+
+static struct resource pxa2xx_udc_resources[] = {
+	[0] = {
+		.start	= 0x40600000,
+		.end	= 0x4060ffff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= IRQ_USB,
+		.end	= IRQ_USB,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static u64 udc_dma_mask = ~(u32)0;
+
+static struct platform_device udc_device = {
+	.name		= "pxa2xx_udc",
+	.id		= 0,
+	.resource	= pxa2xx_udc_resources,
+	.num_resources	= ARRAY_SIZE(pxa2xx_udc_resources),
+	.dev		=  {
+		.platform_data	= &pxa_udc_info,
+		.dma_mask	= &udc_dma_mask,
+	}
+};
+
 static struct platform_device *devices[] __initdata = {
 	&pxamci_device,
+	&udc_device,
 };
 
 static int __init pxa_init(void)

include/asm-arm/arch-pxa/udc.h

+/*
+ * linux/include/asm-arm/arch-pxa/udc.h
+ *
+ * This supports machine-specific differences in how the PXA2xx
+ * USB Device Controller (UDC) is wired.
+ *
+ * It is set in linux/arch/arm/mach-pxa/<machine>.c and used in
+ * the probe routine of linux/drivers/usb/gadget/pxa2xx_udc.c
+ */
+struct pxa2xx_udc_mach_info {
+        int  (*udc_is_connected)(void);		/* do we see host? */
+        void (*udc_command)(int cmd);
+#define	PXA2XX_UDC_CMD_CONNECT		0	/* let host see us */
+#define	PXA2XX_UDC_CMD_DISCONNECT	1	/* so host won't see us */
+};
+
+extern void pxa_set_udc_info(struct pxa2xx_udc_mach_info *info);
+