On Thu, 25 Jul 2024 02:26:41 +0200
Denis Benato <benato.denis96@xxxxxxxxx> wrote:
> Prevent triggers from stop working after the device has entered sleep:
> use iio_device_suspend_triggering and iio_device_resume_triggering helpers.
>
> Signed-off-by: Denis Benato <benato.denis96@xxxxxxxxx>
> ---
> drivers/iio/imu/bmi323/bmi323.h | 1 +
> drivers/iio/imu/bmi323/bmi323_core.c | 29 ++++++++++++++++++++++++++++
> drivers/iio/imu/bmi323/bmi323_i2c.c | 1 +
> drivers/iio/imu/bmi323/bmi323_spi.c | 1 +
> 4 files changed, 32 insertions(+)
>
> diff --git a/drivers/iio/imu/bmi323/bmi323.h b/drivers/iio/imu/bmi323/bmi323.h
> index dff126d41658..209bccb1f335 100644
> --- a/drivers/iio/imu/bmi323/bmi323.h
> +++ b/drivers/iio/imu/bmi323/bmi323.h
> @@ -205,5 +205,6 @@
> struct device;
> int bmi323_core_probe(struct device *dev);
> extern const struct regmap_config bmi323_regmap_config;
> +extern const struct dev_pm_ops bmi323_core_pm_ops;
>
> #endif
> diff --git a/drivers/iio/imu/bmi323/bmi323_core.c b/drivers/iio/imu/bmi323/bmi323_core.c
> index d708d1fe3e42..b318544957de 100644
> --- a/drivers/iio/imu/bmi323/bmi323_core.c
> +++ b/drivers/iio/imu/bmi323/bmi323_core.c
> @@ -2121,6 +2121,35 @@ int bmi323_core_probe(struct device *dev)
> }
> EXPORT_SYMBOL_NS_GPL(bmi323_core_probe, IIO_BMI323);
>
> +#if defined(CONFIG_PM)
> +static int bmi323_core_runtime_suspend(struct device *dev)
> +{
> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> +
I want to think about patch 1 for a few days. In meantime.
> + int ret = iio_device_suspend_triggering(indio_dev);
return iio_device_suspend_triggering(indio_dev);
> +
> + return ret;
> +}
> +
> +static int bmi323_core_runtime_resume(struct device *dev)
> +{
> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> +
> + int ret = iio_device_resume_triggering(indio_dev);
> +
> + return ret;
return iio_device_resume_triggering(indio_dev);
> +}
> +
> +#endif
> +
> +const struct dev_pm_ops bmi323_core_pm_ops = {
> +#if defined(CONFIG_PM)
SET_RUNTIME_PM_OPS() is defined to nothing if CONFIG_PM is
not enabled so these protections aren't needed.
> + SET_RUNTIME_PM_OPS(bmi323_core_runtime_suspend,
> + bmi323_core_runtime_resume, NULL)
> +#endif
> +};
> +EXPORT_SYMBOL_NS_GPL(bmi323_core_pm_ops, IIO_BMI323);
> +
> MODULE_DESCRIPTION("Bosch BMI323 IMU driver");
> MODULE_AUTHOR("Jagath Jog J <jagathjog1996@xxxxxxxxx>");
> MODULE_LICENSE("GPL");
> diff --git a/drivers/iio/imu/bmi323/bmi323_i2c.c b/drivers/iio/imu/bmi323/bmi323_i2c.c
> index 52140bf05765..79c9b029a209 100644
> --- a/drivers/iio/imu/bmi323/bmi323_i2c.c
> +++ b/drivers/iio/imu/bmi323/bmi323_i2c.c
> @@ -128,6 +128,7 @@ MODULE_DEVICE_TABLE(of, bmi323_of_i2c_match);
> static struct i2c_driver bmi323_i2c_driver = {
> .driver = {
> .name = "bmi323",
> + .pm = &bmi323_core_pm_ops,
pm_ptr() to let the compiler drop bmi323_core_pm_ops if
!CONFIG_PM
> .of_match_table = bmi323_of_i2c_match,
> .acpi_match_table = bmi323_acpi_match,
> },
> diff --git a/drivers/iio/imu/bmi323/bmi323_spi.c b/drivers/iio/imu/bmi323/bmi323_spi.c
> index 7b1e8127d0dd..ec3238d93862 100644
> --- a/drivers/iio/imu/bmi323/bmi323_spi.c
> +++ b/drivers/iio/imu/bmi323/bmi323_spi.c
> @@ -79,6 +79,7 @@ MODULE_DEVICE_TABLE(of, bmi323_of_spi_match);
> static struct spi_driver bmi323_spi_driver = {
> .driver = {
> .name = "bmi323",
> + .pm = &bmi323_core_pm_ops,
> .of_match_table = bmi323_of_spi_match,
> },
> .probe = bmi323_spi_probe,
