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mfd: Add PM support to STMPE devices

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Add PM helpers to STMPE and add support to enable wakeup from low power
states

Acked-by: Rabin VINCENT <rabin.vincent@stericsson.com>
Acked-by: Linus WALLEIJ <linus.walleij@stericsson.com>
Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Sundar Iyer 2010-09-15 10:30:54 +05:30 committed by Samuel Ortiz
parent 02bf074923
commit 208c434319
1 changed files with 32 additions and 0 deletions
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32
drivers/mfd/stmpe.c
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@ -873,6 +873,28 @@ static int __devinit stmpe_devices_init(struct stmpe *stmpe)
return ret;
}
#ifdef CONFIG_PM
static int stmpe_suspend(struct device *dev)
{
struct i2c_client *i2c = to_i2c_client(dev);
if (device_may_wakeup(&i2c->dev))
enable_irq_wake(i2c->irq);
return 0;
}
static int stmpe_resume(struct device *dev)
{
struct i2c_client *i2c = to_i2c_client(dev);
if (device_may_wakeup(&i2c->dev))
disable_irq_wake(i2c->irq);
return 0;
}
#endif
static int __devinit stmpe_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
@ -960,9 +982,19 @@ static const struct i2c_device_id stmpe_id[] = {
};
MODULE_DEVICE_TABLE(i2c, stmpe_id);
#ifdef CONFIG_PM
static const struct dev_pm_ops stmpe_dev_pm_ops = {
.suspend = stmpe_suspend,
.resume = stmpe_resume,
};
#endif
static struct i2c_driver stmpe_driver = {
.driver.name = "stmpe",
.driver.owner = THIS_MODULE,
#ifdef CONFIG_PM
.driver.pm = &stmpe_dev_pm_ops,
#endif
.probe = stmpe_probe,
.remove = __devexit_p(stmpe_remove),
.id_table = stmpe_id,