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On 2016年02月22日 16:09, Wei Ni wrote:
> In current of-thermal, the .set_trip_temp only support to
> set trip_temp for SW. But some sensors support to set
> trip_temp on hardware, so that can trigger interrupt,
> shutdown or any other events.
> This patch adds .set_trip_temp() callback in
> thermal_zone_of_device_ops{}, so that the sensor device can
> use it to set trip_temp on hardware.
>
> Signed-off-by: Wei Ni <[email protected]>
> ---
> drivers/thermal/of-thermal.c | 8 ++++++++
> include/linux/thermal.h | 1 +
> 2 files changed, 9 insertions(+)
>
> diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
> index be4eedcb839a..fbfc5a52dc27 100644
> --- a/drivers/thermal/of-thermal.c
> +++ b/drivers/thermal/of-thermal.c
> @@ -331,6 +331,14 @@ static int of_thermal_set_trip_temp(struct
> thermal_zone_device *tz, int trip,
> if (trip >= data->ntrips || trip < 0)
> return -EDOM;
>
> + if (data->ops->set_trip_temp) {
> + int ret;
> +
> + ret = data->ops->set_trip_temp(data->sensor_data, trip, temp);
> + if (ret)
> + return ret;
> + }
> +
> /* thermal framework should take care of data->mask & (1 << trip) */
> data->trips[trip].temperature = temp;
>
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index e13a1ace50e9..e69296dc583b 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -338,6 +338,7 @@ struct thermal_zone_of_device_ops {
> int (*get_temp)(void *, int *);
> int (*get_trend)(void *, long *);
> int (*set_emul_temp)(void *, int);
> + int (*set_trip_temp)(void *, int, int);
> };
>
> /**
>
