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SubjectRe: [PATCH] drivers/thermal/thermal_of: Add change_mode ops support for thermal_of sensor
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On 08/03/2022 16:20, Manaf Meethalavalappu Pallikunhi wrote:
> The sensor driver which register through thermal_of interface doesn't
> have an option to get thermal zone mode change notification from
> thermal core.
>
> Add support for change_mode ops in thermal_of interface so that sensor
> driver can use this ops for mode change notification.
>
> Signed-off-by: Manaf Meethalavalappu Pallikunhi <quic_manafm@quicinc.com>
> ---
> drivers/thermal/thermal_of.c | 14 ++++++++++++++
> include/linux/thermal.h | 3 +++
> 2 files changed, 17 insertions(+)
>
> diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
> index 9233f7e..a4e3820 100644
> --- a/drivers/thermal/thermal_of.c
> +++ b/drivers/thermal/thermal_of.c
> @@ -203,6 +203,17 @@ static int of_thermal_get_trend(struct thermal_zone_device *tz, int trip,
> return data->ops->get_trend(data->sensor_data, trip, trend);
> }
>
> +static int of_thermal_change_mode(struct thermal_zone_device *tz,
> + enum thermal_device_mode mode)
> +{
> + struct __thermal_zone *data = tz->devdata;
> +
> + if (!data->ops || !data->ops->change_mode)
> + return -EINVAL;


If this function is called it is because below in the bind function
ops->change_mode was true, so the condition above is always true, no ?


> + return data->ops->change_mode(data->sensor_data, mode);
> +}
> +
> static int of_thermal_bind(struct thermal_zone_device *thermal,
> struct thermal_cooling_device *cdev)
> {
> @@ -408,6 +419,9 @@ thermal_zone_of_add_sensor(struct device_node *zone,
> if (ops->set_emul_temp)
> tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
>
> + if (ops->change_mode)
> + tzd->ops->change_mode = of_thermal_change_mode;
> +
> mutex_unlock(&tzd->lock);
>
> return tzd;
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index c3148939..365733b 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -299,6 +299,8 @@ struct thermal_zone_params {
> * temperature.
> * @set_trip_temp: a pointer to a function that sets the trip temperature on
> * hardware.
> + * @change_mode: a pointer to a function that notifies the thermal zone
> + * mode change.
> */
> struct thermal_zone_of_device_ops {
> int (*get_temp)(void *, int *);
> @@ -306,6 +308,7 @@ struct thermal_zone_of_device_ops {
> int (*set_trips)(void *, int, int);
> int (*set_emul_temp)(void *, int);
> int (*set_trip_temp)(void *, int, int);
> + int (*change_mode) (void *, enum thermal_device_mode);
> };
>
> /* Function declarations */


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