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path: root/drivers/input/keyboard/imx_keypad.c
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Diffstat (limited to 'drivers/input/keyboard/imx_keypad.c')
-rw-r--r--drivers/input/keyboard/imx_keypad.c46
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/input/keyboard/imx_keypad.c b/drivers/input/keyboard/imx_keypad.c
index d92c15c39e6..ccebd2d0915 100644
--- a/drivers/input/keyboard/imx_keypad.c
+++ b/drivers/input/keyboard/imx_keypad.c
@@ -510,7 +510,7 @@ static int __devinit imx_keypad_probe(struct platform_device *pdev)
/* Ensure that the keypad will stay dormant until opened */
imx_keypad_inhibit(keypad);
- error = request_irq(irq, imx_keypad_irq_handler, IRQF_DISABLED,
+ error = request_irq(irq, imx_keypad_irq_handler, 0,
pdev->name, keypad);
if (error) {
dev_err(&pdev->dev, "failed to request IRQ\n");
@@ -567,10 +567,54 @@ static int __devexit imx_keypad_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int imx_kbd_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct imx_keypad *kbd = platform_get_drvdata(pdev);
+ struct input_dev *input_dev = kbd->input_dev;
+
+ /* imx kbd can wake up system even clock is disabled */
+ mutex_lock(&input_dev->mutex);
+
+ if (input_dev->users)
+ clk_disable(kbd->clk);
+
+ mutex_unlock(&input_dev->mutex);
+
+ if (device_may_wakeup(&pdev->dev))
+ enable_irq_wake(kbd->irq);
+
+ return 0;
+}
+
+static int imx_kbd_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct imx_keypad *kbd = platform_get_drvdata(pdev);
+ struct input_dev *input_dev = kbd->input_dev;
+
+ if (device_may_wakeup(&pdev->dev))
+ disable_irq_wake(kbd->irq);
+
+ mutex_lock(&input_dev->mutex);
+
+ if (input_dev->users)
+ clk_enable(kbd->clk);
+
+ mutex_unlock(&input_dev->mutex);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(imx_kbd_pm_ops, imx_kbd_suspend, imx_kbd_resume);
+
static struct platform_driver imx_keypad_driver = {
.driver = {
.name = "imx-keypad",
.owner = THIS_MODULE,
+ .pm = &imx_kbd_pm_ops,
},
.probe = imx_keypad_probe,
.remove = __devexit_p(imx_keypad_remove),