USB: atmel uaba: Adding invert vbus_pin
Adding vbus_pin_inverted so that the usb detect pin can be active high
or low depending on HW implementation also replaced the
gpio_get_value(udc->vbus_pin); with a call to vbus_is_present(udc); This
allows the driver to be loaded and save about 0,15W on the consumption.
Signed-off-by: Eirik Aanonsen <eaa@wprmedical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index 976822f..f79bdfe 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -320,7 +320,7 @@
static int vbus_is_present(struct usba_udc *udc)
{
if (gpio_is_valid(udc->vbus_pin))
- return gpio_get_value(udc->vbus_pin);
+ return gpio_get_value(udc->vbus_pin) ^ udc->vbus_pin_inverted;
/* No Vbus detection: Assume always present */
return 1;
@@ -1763,7 +1763,7 @@
if (!udc->driver)
goto out;
- vbus = gpio_get_value(udc->vbus_pin);
+ vbus = vbus_is_present(udc);
if (vbus != udc->vbus_prev) {
if (vbus) {
toggle_bias(1);
@@ -2000,6 +2000,7 @@
if (gpio_is_valid(pdata->vbus_pin)) {
if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) {
udc->vbus_pin = pdata->vbus_pin;
+ udc->vbus_pin_inverted = pdata->vbus_pin_inverted;
ret = request_irq(gpio_to_irq(udc->vbus_pin),
usba_vbus_irq, 0,