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USB: gpio_vbus: wakeup support on GPIO VBUS interrupts

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We'd like to see the system waking up from the system-wide suspend
when it gets plugged-in, or the USB cable is pulled out.

Also makes it configurable via platform data 'wakeup'.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shinya Kuribayashi 2012-05-17 20:11:06 +09:00 • committed by Greg Kroah-Hartman
parent ec1ac6e169
commit 7cbb062ade
2 changed files with 35 additions and 0 deletions
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2
include/linux/usb/gpio_vbus.h
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@ -17,6 +17,7 @@
* @gpio_pullup: optional D+ or D- pullup GPIO (else negative/invalid)
* @gpio_vbus_inverted: true if gpio_vbus is active low
* @gpio_pullup_inverted: true if gpio_pullup is active low
* @wakeup: configure gpio_vbus as a wake-up source
*
* The VBUS sensing GPIO should have a pulldown, which will normally be
* part of a resistor ladder turning a 4.0V-5.25V level on VBUS into a
@ -27,4 +28,5 @@ struct gpio_vbus_mach_info {
int gpio_pullup;
bool gpio_vbus_inverted;
bool gpio_pullup_inverted;
bool wakeup;
};