ENS160 supports a deep sleep mode for minimal power consumption. Use it to add PM sleep capability to the driver. Signed-off-by: Gustavo Silva <gustavograzs@xxxxxxxxx> --- drivers/iio/chemical/ens160.h | 2 ++ drivers/iio/chemical/ens160_core.c | 23 +++++++++++++++++++++++ drivers/iio/chemical/ens160_i2c.c | 1 + drivers/iio/chemical/ens160_spi.c | 1 + 4 files changed, 27 insertions(+) diff --git a/drivers/iio/chemical/ens160.h b/drivers/iio/chemical/ens160.h index a8a2f1263..9ed532615 100644 --- a/drivers/iio/chemical/ens160.h +++ b/drivers/iio/chemical/ens160.h @@ -6,4 +6,6 @@ int ens160_core_probe(struct device *dev, struct regmap *regmap, int irq, const char *name); void ens160_core_remove(struct device *dev); +extern const struct dev_pm_ops ens160_pm_ops; + #endif diff --git a/drivers/iio/chemical/ens160_core.c b/drivers/iio/chemical/ens160_core.c index 4b960ef00..a444034a4 100644 --- a/drivers/iio/chemical/ens160_core.c +++ b/drivers/iio/chemical/ens160_core.c @@ -220,6 +220,29 @@ static const struct iio_info ens160_info = { .read_raw = ens160_read_raw, }; +static int ens160_suspend(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct ens160_data *data = iio_priv(indio_dev); + + return ens160_set_mode(data, ENS160_REG_MODE_DEEP_SLEEP); +} + +static int ens160_resume(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct ens160_data *data = iio_priv(indio_dev); + int ret; + + ret = ens160_set_mode(data, ENS160_REG_MODE_IDLE); + if (ret) + return ret; + + return ens160_set_mode(data, ENS160_REG_MODE_STANDARD); +} +EXPORT_NS_SIMPLE_DEV_PM_OPS(ens160_pm_ops, ens160_suspend, ens160_resume, + IIO_ENS160); + static irqreturn_t ens160_irq_handler(int irq, void *private) { struct iio_dev *indio_dev = private; diff --git a/drivers/iio/chemical/ens160_i2c.c b/drivers/iio/chemical/ens160_i2c.c index 28d4988c0..b8785d199 100644 --- a/drivers/iio/chemical/ens160_i2c.c +++ b/drivers/iio/chemical/ens160_i2c.c @@ -55,6 +55,7 @@ static struct i2c_driver ens160_i2c_driver = { .driver = { .name = "ens160_i2c", .of_match_table = ens160_of_i2c_match, + .pm = pm_sleep_ptr(&ens160_pm_ops), }, .probe = ens160_i2c_probe, .remove = ens160_i2c_remove, diff --git a/drivers/iio/chemical/ens160_spi.c b/drivers/iio/chemical/ens160_spi.c index 568b9761d..2cf494032 100644 --- a/drivers/iio/chemical/ens160_spi.c +++ b/drivers/iio/chemical/ens160_spi.c @@ -56,6 +56,7 @@ static struct spi_driver ens160_spi_driver = { .driver = { .name = "ens160_spi", .of_match_table = ens160_spi_of_match, + .pm = pm_sleep_ptr(&ens160_pm_ops), }, .probe = ens160_spi_probe, .remove = ens160_spi_remove, -- 2.45.0