From: Anson Huang <b20788@freescale.com>
Date: Wed, 4 Sep 2013 01:43:48 +0000 (-0400)
Subject: ENGR00277955-1 keyboard: gpio_keys: support wakeup system from freeze mode
X-Git-Tag: KARO-TX6-2014-07-10~252
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b484a29610428af7454d78c6a137a38c708f9844;p=karo-tx-linux.git

ENGR00277955-1 keyboard: gpio_keys: support wakeup system from freeze mode

To support wakeup system from freeze mode of suspend,
device's irq can NOT be disabled during devices suspend,
so we need to add IRQF_NO_SUSPEND flag to irqflags.

Signed-off-by: Anson Huang <b20788@freescale.com>
---

diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 8c98e97f8e41..675dbf8d3aa3 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -3,6 +3,7 @@
  *
  * Copyright 2005 Phil Blundell
  * Copyright 2010, 2011 David Jander <david@protonic.nl>
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -485,6 +486,8 @@ static int gpio_keys_setup_key(struct platform_device *pdev,
 
 		isr = gpio_keys_gpio_isr;
 		irqflags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
+		if (bdata->button->wakeup)
+			irqflags |= IRQF_NO_SUSPEND;
 
 	} else {
 		if (!button->irq) {