USB: at91_udc uses generic GPIO calls; minor cleanup
Various small at91_udc cleanups:
- Use generic GPIO calls, not older platform-specific ones
- Use gpio_request()/gpio_free()
- Use VERBOSE_DEBUG convention, not older VERBOSE
- Fix sparse complaint about parameter type (changed to gfp_t)
- Add missing newline to some rarely-seen debug messages
- Fix some old cleanup bugs on probe() fault paths
Also add a mechanism whereby rm9200 gpios can drive the D+ pullup
through an inverting transistor, based on a patch from Steve Birtles.
Most UDC drivers supporting a GPIO based pullup should probably have
such an option, but testing it requries such a board in hand!
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Steve Birtles <arm_kernel_development@micromark.net.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/asm-arm/arch-at91/board.h b/include/asm-arm/arch-at91/board.h
index 55b07bd..dc189f0 100644
--- a/include/asm-arm/arch-at91/board.h
+++ b/include/asm-arm/arch-at91/board.h
@@ -40,7 +40,8 @@
/* USB Device */
struct at91_udc_data {
u8 vbus_pin; /* high == host powering us */
- u8 pullup_pin; /* high == D+ pulled up */
+ u8 pullup_pin; /* active == D+ pulled up */
+ u8 pullup_active_low; /* true == pullup_pin is active low */
};
extern void __init at91_add_device_udc(struct at91_udc_data *data);