input: pxa27x_keypad: add wakeup support

index 3dea0c5..27aa540 100644
@@ -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 +387,9 @@ 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 +398,9 @@ 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 +505,8 @@ 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 +514,7 @@ 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 +538,7 @@ 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);