diff options
| author | Kevin Tsai <ktsai@capellamicro.com> | 2015-02-19 15:02:51 -0800 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-03-08 12:04:57 +0000 |
| commit | 1ec28ce66aa4b0f7aaab0d496ee293ff2a52dd20 (patch) | |
| tree | 561b8dac990f18d3544b8d7bbd021079443e5551 /drivers | |
| parent | 21bd23ea128d083bf8a4fd570a66a128d58465b5 (diff) | |
| download | linux-1ec28ce66aa4b0f7aaab0d496ee293ff2a52dd20.tar.bz2 | |
iio: light: Added PM support for Capella CM3232 ambient light sensor driver.
Added Power Management Support.
Signed-off-by: Kevin Tsai <ktsai@capellamicro.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/light/cm3232.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/iio/light/cm3232.c b/drivers/iio/light/cm3232.c index 90e3519a91de..39c8d99cc48e 100644 --- a/drivers/iio/light/cm3232.c +++ b/drivers/iio/light/cm3232.c @@ -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, |