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-rw-r--r--arch/sh/boards/mach-kfr2r09/setup.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-kfr2r09/setup.c b/arch/sh/boards/mach-kfr2r09/setup.c
index bdb10c29ef18..1cbd6a3655c3 100644
--- a/arch/sh/boards/mach-kfr2r09/setup.c
+++ b/arch/sh/boards/mach-kfr2r09/setup.c
@@ -16,6 +16,8 @@
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/input.h>
+#include <linux/i2c.h>
+#include <linux/usb/r8a66597.h>
#include <video/sh_mobile_lcdc.h>
#include <asm/clock.h>
#include <asm/machvec.h>
@@ -175,6 +177,35 @@ static struct platform_device kfr2r09_sh_lcdc_device = {
},
};
+static struct r8a66597_platdata kfr2r09_usb0_gadget_data = {
+ .on_chip = 1,
+};
+
+static struct resource kfr2r09_usb0_gadget_resources[] = {
+ [0] = {
+ .start = 0x04d80000,
+ .end = 0x04d80123,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 65,
+ .end = 65,
+ .flags = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
+ },
+};
+
+static struct platform_device kfr2r09_usb0_gadget_device = {
+ .name = "r8a66597_udc",
+ .id = 0,
+ .dev = {
+ .dma_mask = NULL, /* not use dma */
+ .coherent_dma_mask = 0xffffffff,
+ .platform_data = &kfr2r09_usb0_gadget_data,
+ },
+ .num_resources = ARRAY_SIZE(kfr2r09_usb0_gadget_resources),
+ .resource = kfr2r09_usb0_gadget_resources,
+};
+
static struct platform_device *kfr2r09_devices[] __initdata = {
&kfr2r09_nor_flash_device,
&kfr2r09_nand_flash_device,
@@ -186,6 +217,74 @@ static struct platform_device *kfr2r09_devices[] __initdata = {
#define BSC_CS0WCR 0xfec10024
#define BSC_CS4BCR 0xfec10010
#define BSC_CS4WCR 0xfec10030
+#define PORT_MSELCRB 0xa4050182
+
+static int kfr2r09_usb0_gadget_i2c_setup(void)
+{
+ struct i2c_adapter *a;
+ struct i2c_msg msg;
+ unsigned char buf[2];
+ int ret;
+
+ a = i2c_get_adapter(0);
+ if (!a)
+ return -ENODEV;
+
+ /* set bit 1 (the second bit) of chip at 0x09, register 0x13 */
+ buf[0] = 0x13;
+ msg.addr = 0x09;
+ msg.buf = buf;
+ msg.len = 1;
+ msg.flags = 0;
+ ret = i2c_transfer(a, &msg, 1);
+ if (ret != 1)
+ return -ENODEV;
+
+ buf[0] = 0;
+ msg.addr = 0x09;
+ msg.buf = buf;
+ msg.len = 1;
+ msg.flags = I2C_M_RD;
+ ret = i2c_transfer(a, &msg, 1);
+ if (ret != 1)
+ return -ENODEV;
+
+ buf[1] = buf[0] | (1 << 1);
+ buf[0] = 0x13;
+ msg.addr = 0x09;
+ msg.buf = buf;
+ msg.len = 2;
+ msg.flags = 0;
+ ret = i2c_transfer(a, &msg, 1);
+ if (ret != 1)
+ return -ENODEV;
+
+ return 0;
+}
+
+static int kfr2r09_usb0_gadget_setup(void)
+{
+ int plugged_in;
+
+ gpio_request(GPIO_PTN4, NULL); /* USB_DET */
+ gpio_direction_input(GPIO_PTN4);
+ plugged_in = gpio_get_value(GPIO_PTN4);
+ if (!plugged_in)
+ return -ENODEV; /* no cable plugged in */
+
+ if (kfr2r09_usb0_gadget_i2c_setup() != 0)
+ return -ENODEV; /* unable to configure using i2c */
+
+ ctrl_outw((ctrl_inw(PORT_MSELCRB) & ~0xc000) | 0x8000, PORT_MSELCRB);
+ gpio_request(GPIO_FN_PDSTATUS, NULL); /* R-standby disables USB clock */
+ gpio_request(GPIO_PTV6, NULL); /* USBCLK_ON */
+ gpio_direction_output(GPIO_PTV6, 1); /* USBCLK_ON = H */
+ msleep(20); /* wait 20ms to let the clock settle */
+ clk_enable(clk_get(NULL, "usb0"));
+ ctrl_outw(0x0600, 0xa40501d4);
+
+ return 0;
+}
static int __init kfr2r09_devices_setup(void)
{
@@ -245,6 +344,10 @@ static int __init kfr2r09_devices_setup(void)
gpio_request(GPIO_PTU0, NULL); /* LEDSTDBY/ */
gpio_direction_output(GPIO_PTU0, 1);
+ /* setup USB function */
+ if (kfr2r09_usb0_gadget_setup() == 0)
+ platform_device_register(&kfr2r09_usb0_gadget_device);
+
return platform_add_devices(kfr2r09_devices,
ARRAY_SIZE(kfr2r09_devices));
}