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>
---
no changes in v2
drivers/iio/chemical/ens160.h | 3 +++
drivers/iio/chemical/ens160_core.c | 23 +++++++++++++++++++++++
drivers/iio/chemical/ens160_i2c.c | 1 +
drivers/iio/chemical/ens160_spi.c | 1 +
4 files changed, 28 insertions(+)
diff --git a/drivers/iio/chemical/ens160.h b/drivers/iio/chemical/ens160.h
index e6cc0987a..f9f0575ce 100644
--- a/drivers/iio/chemical/ens160.h
+++ b/drivers/iio/chemical/ens160.h
@@ -4,4 +4,7 @@
int devm_ens160_core_probe(struct device *dev, struct regmap *regmap, int irq,
const char *name);
+
+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 74ef7f150..dd501e655 100644
--- a/drivers/iio/chemical/ens160_core.c
+++ b/drivers/iio/chemical/ens160_core.c
@@ -215,6 +215,29 @@ 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_trigger_handler(int irq, void *p)
{
struct iio_poll_func *pf = p;
diff --git a/drivers/iio/chemical/ens160_i2c.c b/drivers/iio/chemical/ens160_i2c.c
index 4bf3c455c..06d2967a9 100644
--- a/drivers/iio/chemical/ens160_i2c.c
+++ b/drivers/iio/chemical/ens160_i2c.c
@@ -49,6 +49,7 @@ 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,
.id_table = ens160_i2c_id,
diff --git a/drivers/iio/chemical/ens160_spi.c b/drivers/iio/chemical/ens160_spi.c
index 91528c5e3..f9603f51d 100644
--- a/drivers/iio/chemical/ens160_spi.c
+++ b/drivers/iio/chemical/ens160_spi.c
@@ -49,6 +49,7 @@ 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,
.id_table = ens160_spi_id,
--
2.45.1
