ARM: mach-shmobile: G4EVM USBHS support

Add G4EVM platform data and a magic setup sequence to
initialize the r8a66597 block aka USBHS in sh7377.

Signed-off-by: NISHIMOTO Hiroki <nishimoto.hiroki@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 59 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/board-g4evm.c b/arch/arm/mach-shmobile/board-g4evm.c
index ef4b0f59af4..5acd623f93e 100644
--- a/arch/arm/mach-shmobile/board-g4evm.c
+++ b/arch/arm/mach-shmobile/board-g4evm.c
@@ -26,6 +26,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
+#include <linux/usb/r8a66597.h>
 #include <linux/io.h>
 #include <linux/gpio.h>
 #include <mach/sh7377.h>
@@ -86,9 +87,50 @@ static struct platform_device nor_flash_device = {
 	.resource	= nor_flash_resources,
 };
 
+/* USBHS */
+void usb_host_port_power(int port, int power)
+{
+	if (!power) /* only power-on supported for now */
+		return;
+
+	/* set VBOUT/PWEN and EXTLP0 in DVSTCTR */
+	__raw_writew(__raw_readw(0xe6890008) | 0x600, 0xe6890008);
+}
+
+static struct r8a66597_platdata usb_host_data = {
+	.on_chip = 1,
+	.port_power = usb_host_port_power,
+};
+
+static struct resource usb_host_resources[] = {
+	[0] = {
+		.name	= "USBHS",
+		.start	= 0xe6890000,
+		.end	= 0xe68900e5,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= 65,
+		.end	= 65,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device usb_host_device = {
+	.name		= "r8a66597_hcd",
+	.id		= 0,
+	.dev = {
+		.platform_data		= &usb_host_data,
+		.dma_mask		= NULL,
+		.coherent_dma_mask	= 0xffffffff,
+	},
+	.num_resources	= ARRAY_SIZE(usb_host_resources),
+	.resource	= usb_host_resources,
+};
 
 static struct platform_device *g4evm_devices[] __initdata = {
 	&nor_flash_device,
+	&usb_host_device,
 };
 
 static struct map_desc g4evm_io_desc[] __initdata = {
@@ -137,6 +179,23 @@ static void __init g4evm_init(void)
 	gpio_direction_output(GPIO_PORT113, 1);
 	gpio_export(GPIO_PORT113, 1);
 
+	/* USBHS */
+	gpio_request(GPIO_FN_VBUS_0, NULL);
+	gpio_request(GPIO_FN_PWEN, NULL);
+	gpio_request(GPIO_FN_OVCN, NULL);
+	gpio_request(GPIO_FN_OVCN2, NULL);
+	gpio_request(GPIO_FN_EXTLP, NULL);
+	gpio_request(GPIO_FN_IDIN, NULL);
+
+	/* enable clock in SMSTPCR3 */
+	__raw_writel(__raw_readl(0xe615013c) & ~(1 << 22), 0xe615013c);
+
+	/* setup USB phy */
+	__raw_writew(0x0200, 0xe605810a);       /* USBCR1 */
+	__raw_writew(0x00e0, 0xe60581c0);       /* CPFCH */
+	__raw_writew(0x6010, 0xe60581c6);       /* CGPOSR */
+	__raw_writew(0x8a0a, 0xe605810c);       /* USBCR2 */
+
 	sh7377_add_standard_devices();
 
 	platform_add_devices(g4evm_devices, ARRAY_SIZE(g4evm_devices));