USB: gadget: pxa2xx_udc supports inverted vbus

Some boards (like e.g. Tosa) invert the VBUS-detection signal:
it's low when a host is supplying VBUS, and high otherwise.
Allow specifying whether gpio_vbus value is inverted.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/include/asm-arm/mach/udc_pxa2xx.h b/include/asm-arm/mach/udc_pxa2xx.h
index ff0a95715a07..f191e147ea90 100644
--- a/include/asm-arm/mach/udc_pxa2xx.h
+++ b/include/asm-arm/mach/udc_pxa2xx.h
@@ -19,7 +19,9 @@ struct pxa2xx_udc_mach_info {
          * with on-chip GPIOs not Lubbock's wierd hardware, can have a sane
          * VBUS IRQ and omit the methods above.  Store the GPIO number
          * here; for GPIO 0, also mask in one of the pxa_gpio_mode() bits.
+         * Note that sometimes the signals go through inverters...
          */
+        bool    gpio_vbus_inverted;
         u16     gpio_vbus;                      /* high == vbus present */
         u16     gpio_pullup;                    /* high == pullup activated */
 };