1 files changed, 110 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/44x/bluestone-usb.c b/arch/powerpc/platforms/44x/bluestone-usb.c
new file mode 100755
index 00000000000..06a8dcc5c96
--- /dev/null
+++ b/arch/powerpc/platforms/44x/bluestone-usb.c
@@ -0,0 +1,110 @@
+/*
+ * AMCC Bluestone USB-OTG wrapper
+ *
+ * Copyright 2008 DENX Software Engineering, Stefan Roese <sr@denx.de>
+ *
+ * Extract the resources (MEM & IRQ) from the dts file and put them
+ * into the platform-device struct for usage in the platform-device
+ * USB-OTG driver.
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/of_platform.h>
+#define U64_TO_U32_LOW(val)     ((u32)((val) & 0x00000000ffffffffULL))
+#define U64_TO_U32_HIGH(val)    ((u32)((val) >> 32))
+
+
+/*
+ * Resource template will be filled dynamically with the values
+ * extracted from the dts file
+ */
+static struct resource usb_otg_resources[] = {
+	[0] = {
+		/* 405EX USB-OTG registers */
+		.flags  = IORESOURCE_MEM,
+	},
+	[1] = {
+		/* 405EX OTG IRQ */
+		.flags  = IORESOURCE_IRQ,
+	},
+	[2] = {
+		/* High-Power workaround IRQ */
+		.flags  = IORESOURCE_IRQ,
+	},
+	[3] = {
+		/* 405EX DMA IRQ */
+		.flags  = IORESOURCE_IRQ,
+	},
+};
+
+static u64 dma_mask = 0xffffffffULL;
+
+static struct platform_device usb_otg_device = {
+        .name = "dwc_otg",
+        .id = 0,
+        .num_resources = ARRAY_SIZE(usb_otg_resources),
+        .resource = usb_otg_resources,
+        .dev = {
+                .dma_mask = &dma_mask,
+                .coherent_dma_mask = 0xffffffffULL,
+        }
+};
+
+static struct platform_device *ppc405ex_devs[] __initdata = {
+        &usb_otg_device,
+};
+
+static int __devinit ppc405ex_usb_otg_probe(struct of_device *ofdev,
+					    const struct of_device_id *match)
+{
+	struct device_node *np = ofdev->node;
+	struct resource res;
+
+	/*
+	 * Extract register address reange from device tree and put it into
+	 * the platform device structure
+	 */
+	if (of_address_to_resource(np, 0, &res)) {
+		printk(KERN_ERR "%s: Can't get USB-OTG register address\n", __func__);
+		return -ENOMEM;
+	}
+	usb_otg_resources[0].start = res.start;
+	usb_otg_resources[0].end = res.end;
+
+	/*
+	 * Extract IRQ number(s) from device tree and put them into
+	 * the platform device structure
+	 */
+	usb_otg_resources[1].start = usb_otg_resources[1].end =
+		irq_of_parse_and_map(np, 0);
+	usb_otg_resources[2].start = usb_otg_resources[2].end =
+		irq_of_parse_and_map(np, 1);
+	usb_otg_resources[3].start = usb_otg_resources[3].end =
+		irq_of_parse_and_map(np, 2);
+	return platform_add_devices(ppc405ex_devs, ARRAY_SIZE(ppc405ex_devs));
+}
+
+static int __devexit ppc405ex_usb_otg_remove(struct of_device *ofdev)
+{
+	/* Nothing to do here */
+	return 0;
+}
+
+static const struct of_device_id ppc405ex_usb_otg_match[] = {
+	{ .compatible = "amcc,usb-otg-405ex", },
+	{}
+};
+
+static struct of_platform_driver ppc405ex_usb_otg_driver = {
+	.name = "ppc405ex-usb-otg",
+	.match_table = ppc405ex_usb_otg_match,
+	.probe = ppc405ex_usb_otg_probe,
+	.remove = ppc405ex_usb_otg_remove,
+};
+
+static int __init ppc405ex_usb_otg_init(void)
+{
+	return of_register_platform_driver(&ppc405ex_usb_otg_driver);
+}
+device_initcall(ppc405ex_usb_otg_init);