ARM: mach-shmobile: G3EVM USBHS support

Add G3EVM platform data and a magic setup sequence to
initialize the r8a66597 block aka USBHS in sh7367.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2 files changed, 65 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/board-g3evm.c b/arch/arm/mach-shmobile/board-g3evm.c
index 28ee589caba6..f36c9a94d326 100644
--- a/arch/arm/mach-shmobile/board-g3evm.c
+++ b/arch/arm/mach-shmobile/board-g3evm.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/sh7367.h>
@@ -86,9 +87,49 @@ 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,
+                .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 *g3evm_devices[] __initdata = {
         &nor_flash_device,
+        &usb_host_device,
 };
 
 static struct map_desc g3evm_io_desc[] __initdata = {
@@ -138,6 +179,23 @@ static void __init g3evm_init(void)
         gpio_request(GPIO_FN_SCIFA1_CTS, NULL);
         gpio_request(GPIO_FN_SCIFA1_RTS, NULL);
 
+        /* USBHS */
+        gpio_request(GPIO_FN_VBUS0, 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 SYMSTPCR2 */
+        __raw_writel(__raw_readl(0xe6158048) & ~(1 << 22), 0xe6158048);
+
+        /* setup USB phy */
+        __raw_writew(0x0300, 0xe605810a);       /* USBCR1 */
+        __raw_writew(0x00e0, 0xe60581c0);       /* CPFCH */
+        __raw_writew(0x6010, 0xe60581c6);       /* CGPOSR */
+        __raw_writew(0x8a0a, 0xe605810c);       /* USBCR2 */
+
         sh7367_add_standard_devices();
 
         platform_add_devices(g3evm_devices, ARRAY_SIZE(g3evm_devices));
diff --git a/arch/arm/mach-shmobile/clock-sh7367.c b/arch/arm/mach-shmobile/clock-sh7367.c
index 3b2e3f2fc7ea..58bd54e1113a 100644
--- a/arch/arm/mach-shmobile/clock-sh7367.c
+++ b/arch/arm/mach-shmobile/clock-sh7367.c
@@ -70,11 +70,18 @@ static struct clk r_clk = {
         .rate       = 32768,
 };
 
+/* a static usb0 for now - enough to get r8a66597 working */
+static struct clk usb0_clk = {
+        .name       = "usb0",
+};
+
 static struct clk_lookup lookups[] = {
         {
                 .clk = &peripheral_clk,
         }, {
                 .clk = &r_clk,
+        }, {
+                .clk = &usb0_clk,
         }
 };