[ARM] Acer n30: USB bus pull-up support.

Add support for the USB D+ pull up on the Acer N30.  This is needed
for the USB gadget to work properly.

Signed-off-by: Christer Weinigel <christer@weinigel.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2410/mach-n30.c b/arch/arm/mach-s3c2410/mach-n30.c
index fc54e07ccac5..8edc0c0eb043 100644
--- a/arch/arm/mach-s3c2410/mach-n30.c
+++ b/arch/arm/mach-s3c2410/mach-n30.c
@@ -41,6 +41,7 @@
 #include <asm/plat-s3c24xx/cpu.h>
 #include <asm/plat-s3c24xx/devs.h>
 #include <asm/plat-s3c24xx/s3c2410.h>
+#include <asm/plat-s3c24xx/udc.h>
 
 static struct map_desc n30_iodesc[] __initdata = {
         /* nothing here yet */
@@ -74,6 +75,29 @@ static struct s3c2410_uartcfg n30_uartcfgs[] = {
         },
 };
 
+static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
+{
+        switch (cmd)
+        {
+                case S3C2410_UDC_P_ENABLE :
+                        s3c2410_gpio_setpin(S3C2410_GPB3, 1);
+                        break;
+                case S3C2410_UDC_P_DISABLE :
+                        s3c2410_gpio_setpin(S3C2410_GPB3, 0);
+                        break;
+                case S3C2410_UDC_P_RESET :
+                        break;
+                default:
+                        break;
+        }
+}
+
+static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
+        .udc_command            = n30_udc_pullup,
+        .vbus_pin               = S3C2410_GPG1,
+        .vbus_pin_inverted      = 0,
+};
+
 static struct platform_device *n30_devices[] __initdata = {
         &s3c_device_lcd,
         &s3c_device_wdt,
@@ -107,6 +131,7 @@ static void __init n30_init_irq(void)
 static void __init n30_init(void)
 {
         s3c_device_i2c.dev.platform_data = &n30_i2ccfg;
+        s3c24xx_udc_set_platdata(&n30_udc_cfg);
 
         /* Turn off suspend on both USB ports, and switch the
          * selectable USB port to USB device mode. */