From: Magnus Damm <damm@xxxxxxxxxxxxx>
Extend the tca6416 driver to use enable_irq_wake()
and disable_irq_wake() in the suspend/resume hooks.
This makes it possible to wake up from suspend-to-ram
using a tca6416 key on the sh7372 mackerel board.
Signed-off-by: Magnus Damm <damm@xxxxxxxxxxxxx>
---
drivers/input/keyboard/tca6416-keypad.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
--- 0001/drivers/input/keyboard/tca6416-keypad.c
+++ work/drivers/input/keyboard/tca6416-keypad.c 2011-03-16 12:53:34.000000000 +0900
@@ -297,6 +297,7 @@ static int __devinit tca6416_keypad_prob
}
i2c_set_clientdata(client, chip);
+ device_init_wakeup(&client->dev, 1);
return 0;
@@ -326,10 +327,35 @@ static int __devexit tca6416_keypad_remo
return 0;
}
+static int tca6416_keypad_suspend(struct device *dev)
+{
+ struct tca6416_keypad_chip *chip = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ enable_irq_wake(chip->irqnum);
+
+ return 0;
+}
+
+static int tca6416_keypad_resume(struct device *dev)
+{
+ struct tca6416_keypad_chip *chip = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ disable_irq_wake(chip->irqnum);
+
+ return 0;
+}
+
+static const struct dev_pm_ops tca6416_keypad_dev_pm_ops = {
+ .suspend = tca6416_keypad_suspend,
+ .resume = tca6416_keypad_resume,
+};
static struct i2c_driver tca6416_keypad_driver = {
.driver = {
.name = "tca6416-keypad",
+ .pm = &tca6416_keypad_dev_pm_ops,
},
.probe = tca6416_keypad_probe,
.remove = __devexit_p(tca6416_keypad_remove),
--
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