diff options
| author | Magnus Damm <damm@opensource.se> | 2011-03-16 08:32:39 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-03-16 09:18:28 +0300 |
| commit | 64dcddd888998f7db9929e19fc063e75e3ea21f5 (patch) | |
| tree | 3005487865a6fe5eca16c2e00a8436f8507d9a19 /drivers/input/keyboard/tca6416-keypad.c | |
| parent | 4c75de32eb9fcaa14925e2e444748f8b71e4f6fc (diff) | |
| download | linux-64dcddd888998f7db9929e19fc063e75e3ea21f5.tar.xz | |
Input: tca6416-keypad - suspend/resume wakeup support
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@opensource.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/keyboard/tca6416-keypad.c')
| -rw-r--r-- | drivers/input/keyboard/tca6416-keypad.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/input/keyboard/tca6416-keypad.c b/drivers/input/keyboard/tca6416-keypad.c index 800fbccf1f0f..3afea3f89718 100644 --- a/drivers/input/keyboard/tca6416-keypad.c +++ b/drivers/input/keyboard/tca6416-keypad.c @@ -297,6 +297,7 @@ static int __devinit tca6416_keypad_probe(struct i2c_client *client, } i2c_set_clientdata(client, chip); + device_init_wakeup(&client->dev, 1); return 0; @@ -326,10 +327,37 @@ static int __devexit tca6416_keypad_remove(struct i2c_client *client) return 0; } +#ifdef CONFIG_PM_SLEEP +static int tca6416_keypad_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct tca6416_keypad_chip *chip = i2c_get_clientdata(client); + + if (device_may_wakeup(dev)) + enable_irq_wake(chip->irqnum); + + return 0; +} + +static int tca6416_keypad_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct tca6416_keypad_chip *chip = i2c_get_clientdata(client); + + if (device_may_wakeup(dev)) + disable_irq_wake(chip->irqnum); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(tca6416_keypad_dev_pm_ops, + tca6416_keypad_suspend, 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), |