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iio: chemical: ens160: add power management support

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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@gmail.com>
Link: https://lore.kernel.org/r/20240604225747.7212-6-gustavograzs@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Gustavo Silva 2024-06-04 19:57:29 -03:00 committed by Jonathan Cameron
parent 0fc26596b4
commit d12b7d6ede
4 changed files with 28 additions and 0 deletions
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3
drivers/iio/chemical/ens160.h
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@ -4,4 +4,7 @@
int devm_ens160_core_probe(struct device *dev, struct regmap *regmap, int irq, int devm_ens160_core_probe(struct device *dev, struct regmap *regmap, int irq,
const char *name); const char *name);
extern const struct dev_pm_ops ens160_pm_ops;
#endif #endif

23
drivers/iio/chemical/ens160_core.c
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@ -220,6 +220,29 @@ static const struct iio_info ens160_info = {
.read_raw = ens160_read_raw, .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_trigger_handler(int irq, void *p) static irqreturn_t ens160_trigger_handler(int irq, void *p)
{ {
struct iio_poll_func *pf = p; struct iio_poll_func *pf = p;

1
drivers/iio/chemical/ens160_i2c.c
View File

@ -49,6 +49,7 @@ static struct i2c_driver ens160_i2c_driver = {
.driver = { .driver = {
.name = "ens160", .name = "ens160",
.of_match_table = ens160_of_i2c_match, .of_match_table = ens160_of_i2c_match,
.pm = pm_sleep_ptr(&ens160_pm_ops),
}, },
.probe = ens160_i2c_probe, .probe = ens160_i2c_probe,
.id_table = ens160_i2c_id, .id_table = ens160_i2c_id,

1
drivers/iio/chemical/ens160_spi.c
View File

@ -48,6 +48,7 @@ static struct spi_driver ens160_spi_driver = {
.driver = { .driver = {
.name = "ens160", .name = "ens160",
.of_match_table = ens160_spi_of_match, .of_match_table = ens160_spi_of_match,
.pm = pm_sleep_ptr(&ens160_pm_ops),
}, },
.probe = ens160_spi_probe, .probe = ens160_spi_probe,
.id_table = ens160_spi_id, .id_table = ens160_spi_id,