USB: pxa2xx_udc understands GPIO based VBUS sensing

This updates the PXA 25x UDC board-independent infrastructure for VBUS sensing
and the D+ pullup.  The original code evolved from rather bizarre support on
Intel's "Lubbock" reference hardware, so that on more sensible hardware it
doesn't work as well as it could/should.

The change is just to teach the UDC driver how to use built-in PXA GPIO pins
directly.  This reduces the amount of board-specfic object code needed, and
enables the use of a VBUS sensing IRQ on boards (like Gumstix) that have one.
With VBUS sensing, the UDC is unclocked until a host is actually connected.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 14 deletions

diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index cce26576999..337c01c4ac3 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -284,21 +284,9 @@ static struct pxaficp_platform_data corgi_ficp_platform_data = {
 /*
  * USB Device Controller
  */
-static void corgi_udc_command(int cmd)
-{
-        switch(cmd)     {
-        case PXA2XX_UDC_CMD_CONNECT:
-                GPSR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
-                break;
-        case PXA2XX_UDC_CMD_DISCONNECT:
-                GPCR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
-                break;
-        }
-}
-
 static struct pxa2xx_udc_mach_info udc_info __initdata = {
         /* no connect GPIO; corgi can't tell connection status */
-        .udc_command            = corgi_udc_command,
+        .gpio_pullup            = CORGI_GPIO_USB_PULLUP,
 };
 
 
@@ -350,7 +338,6 @@ static void __init corgi_init(void)
         corgi_ssp_set_machinfo(&corgi_ssp_machinfo);
 
         pxa_gpio_mode(CORGI_GPIO_IR_ON | GPIO_OUT);
-        pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
         pxa_gpio_mode(CORGI_GPIO_HSYNC | GPIO_IN);
 
         pxa_set_udc_info(&udc_info);