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Commit 1ec28ce6 authored by Kevin Tsai's avatar Kevin Tsai Committed by Jonathan Cameron
Browse files

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



Added Power Management Support.

Signed-off-by: default avatarKevin Tsai <ktsai@capellamicro.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 21bd23ea

drivers/iio/light/cm3232.c

+36 −0
Original line number Diff line number Diff line
@@ -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,