Input: pxa27x_keypad - add wakeup support

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 14 insertions, 1 deletions

diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index 3dea0c5077a9..c7c9599b315d 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c
@@ -105,6 +105,8 @@ struct pxa27x_keypad {
         struct input_dev *input_dev;
         void __iomem *mmio_base;
 
+        int irq;
+
         /* matrix key code map */
         unsigned int matrix_keycodes[MAX_MATRIX_KEY_NUM];
 
@@ -385,6 +387,10 @@ static int pxa27x_keypad_suspend(struct platform_device *pdev, pm_message_t stat
         struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
 
         clk_disable(keypad->clk);
+
+        if (device_may_wakeup(&pdev->dev))
+                enable_irq_wake(keypad->irq);
+
         return 0;
 }
 
@@ -393,6 +399,9 @@ static int pxa27x_keypad_resume(struct platform_device *pdev)
         struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
         struct input_dev *input_dev = keypad->input_dev;
 
+        if (device_may_wakeup(&pdev->dev))
+                disable_irq_wake(keypad->irq);
+
         mutex_lock(&input_dev->mutex);
 
         if (input_dev->users) {
@@ -497,6 +506,8 @@ static int __devinit pxa27x_keypad_probe(struct platform_device *pdev)
                 goto failed_free_dev;
         }
 
+        keypad->irq = irq;
+
         /* Register the input device */
         error = input_register_device(input_dev);
         if (error) {
@@ -504,6 +515,8 @@ static int __devinit pxa27x_keypad_probe(struct platform_device *pdev)
                 goto failed_free_irq;
         }
 
+        device_init_wakeup(&pdev->dev, 1);
+
         return 0;
 
 failed_free_irq:
@@ -527,7 +540,7 @@ static int __devexit pxa27x_keypad_remove(struct platform_device *pdev)
         struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
         struct resource *res;
 
-        free_irq(platform_get_irq(pdev, 0), pdev);
+        free_irq(keypad->irq, pdev);
 
         clk_disable(keypad->clk);
         clk_put(keypad->clk);