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[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>
This commit is contained in:
Christer Weinigel 2008-07-07 18:12:42 +01:00 committed by Ben Dooks
parent 196a047574
commit d088e5fe58
1 changed files with 25 additions and 0 deletions
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25
arch/arm/mach-s3c2410/mach-n30.c
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@ -41,6 +41,7 @@
#include <asm/plat-s3c24xx/cpu.h> #include <asm/plat-s3c24xx/cpu.h>
#include <asm/plat-s3c24xx/devs.h> #include <asm/plat-s3c24xx/devs.h>
#include <asm/plat-s3c24xx/s3c2410.h> #include <asm/plat-s3c24xx/s3c2410.h>
#include <asm/plat-s3c24xx/udc.h>
static struct map_desc n30_iodesc[] __initdata = { static struct map_desc n30_iodesc[] __initdata = {
/* nothing here yet */ /* 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 = { static struct platform_device *n30_devices[] __initdata = {
&s3c_device_lcd, &s3c_device_lcd,
&s3c_device_wdt, &s3c_device_wdt,
@ -107,6 +131,7 @@ static void __init n30_init_irq(void)
static void __init n30_init(void) static void __init n30_init(void)
{ {
s3c_device_i2c.dev.platform_data = &n30_i2ccfg; 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 /* Turn off suspend on both USB ports, and switch the
* selectable USB port to USB device mode. */ * selectable USB port to USB device mode. */