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iio: light: ltr390: Suspend and Resume support

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Added support for suspend and resume PM ops.
We suspend the sensor by clearing the ALS_UVS_EN bit in the MAIN CONTROL
register. And we resume it by setting that bit.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240914181246.504450-3-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Abhash Jha 2024-09-14 23:42:44 +05:30 committed by Jonathan Cameron
parent bd7057bb94
commit 288ce72fb5
1 changed files with 22 additions and 0 deletions
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22
drivers/iio/light/ltr390.c
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@ -18,6 +18,7 @@
* - Interrupt support
*/
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/math.h>
#include <linux/module.h>
@ -430,6 +431,26 @@ static int ltr390_probe(struct i2c_client *client)
return devm_iio_device_register(dev, indio_dev);
}
static int ltr390_suspend(struct device *dev)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ltr390_data *data = iio_priv(indio_dev);
return regmap_clear_bits(data->regmap, LTR390_MAIN_CTRL,
LTR390_SENSOR_ENABLE);
}
static int ltr390_resume(struct device *dev)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ltr390_data *data = iio_priv(indio_dev);
return regmap_set_bits(data->regmap, LTR390_MAIN_CTRL,
LTR390_SENSOR_ENABLE);
}
static DEFINE_SIMPLE_DEV_PM_OPS(ltr390_pm_ops, ltr390_suspend, ltr390_resume);
static const struct i2c_device_id ltr390_id[] = {
{ "ltr390" },
{ /* Sentinel */ }
@ -446,6 +467,7 @@ static struct i2c_driver ltr390_driver = {
.driver = {
.name = "ltr390",
.of_match_table = ltr390_of_table,
.pm = pm_sleep_ptr(&ltr390_pm_ops),
},
.probe = ltr390_probe,
.id_table = ltr390_id,