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| author | Sundar Iyer <sundar.iyer@stericsson.com> | 2010-09-15 10:30:54 +0530 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2010-10-29 00:29:34 +0200 |
| commit | 208c4343192c052048ddf096d8e189162e5ee219 (patch) | |
| tree | 9473aab77f78e0511657881f5199d22788c8167a /drivers/mfd/stmpe.c | |
| parent | 02bf07492341d94e29890082201dd69dbf406570 (diff) | |
| download | linux-stable-208c4343192c052048ddf096d8e189162e5ee219.tar.gz linux-stable-208c4343192c052048ddf096d8e189162e5ee219.tar.bz2 linux-stable-208c4343192c052048ddf096d8e189162e5ee219.zip | |
mfd: Add PM support to STMPE devices
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>
Diffstat (limited to 'drivers/mfd/stmpe.c')
| -rw-r--r-- | drivers/mfd/stmpe.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c index 0754c5e91995..b11487f1e1cb 100644 --- a/drivers/mfd/stmpe.c +++ b/drivers/mfd/stmpe.c @@ -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, |