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iio: light: Added PM support for Capella CM3232 ambient light sensor driver.

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Added Power Management Support.

Signed-off-by: Kevin Tsai <ktsai@capellamicro.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Kevin Tsai 2015-02-19 15:02:51 -08:00 committed by Jonathan Cameron
parent 21bd23ea12
commit 1ec28ce66a
1 changed files with 36 additions and 0 deletions
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36
drivers/iio/light/cm3232.c
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@ -378,6 +378,39 @@ static const struct i2c_device_id cm3232_id[] = {
{}
};
#ifdef CONFIG_PM_SLEEP
static int cm3232_suspend(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct cm3232_chip *chip = iio_priv(indio_dev);
struct i2c_client *client = chip->client;
int ret;
chip->regs_cmd |= CM3232_CMD_ALS_DISABLE;
ret = i2c_smbus_write_byte_data(client, CM3232_REG_ADDR_CMD,
chip->regs_cmd);
return ret;
}
static int cm3232_resume(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct cm3232_chip *chip = iio_priv(indio_dev);
struct i2c_client *client = chip->client;
int ret;
chip->regs_cmd &= ~CM3232_CMD_ALS_DISABLE;
ret = i2c_smbus_write_byte_data(client, CM3232_REG_ADDR_CMD,
chip->regs_cmd | CM3232_CMD_ALS_RESET);
return ret;
}
static const struct dev_pm_ops cm3232_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(cm3232_suspend, cm3232_resume)};
#endif
MODULE_DEVICE_TABLE(i2c, cm3232_id);
static const struct of_device_id cm3232_of_match[] = {
@ -390,6 +423,9 @@ static struct i2c_driver cm3232_driver = {
.name = "cm3232",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(cm3232_of_match),
#ifdef CONFIG_PM_SLEEP
.pm = &cm3232_pm_ops,
#endif
},
.id_table = cm3232_id,
.probe = cm3232_probe,