Re: [PATCH 06/13] thermal: streamline get_trend callbacks

Eduardo Valentin
2015-04-07T03:19:51Z

[-- Attachment #1: Type: text/plain, Size: 4224 bytes --]

On Thu, Mar 26, 2015 at 04:53:53PM +0100, Sascha Hauer wrote:
> The .get_trend callback in struct thermal_zone_device_ops has the prototype:
>
> int (*get_trend) (struct thermal_zone_device *, int,
> enum thermal_trend *);
>
> whereas the .get_trend callback in struct thermal_zone_of_device_ops has:
>
> int (*get_trend)(void *, long *);
>
> Streamline both prototypes and add the trip argument to the OF callback
> aswell and use enum thermal_trend * instead of an integer pointer.
>
> While the OF prototype may be the better one, this should be decided at
> framework level and not on OF level.
>
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
> drivers/thermal/of-thermal.c | 11 +---------
> drivers/thermal/ti-soc-thermal/ti-thermal-common.c | 25 +++++++---------------
> include/linux/thermal.h | 2 +-
> 3 files changed, 10 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
> index 668fb1b..b39e22f 100644
> --- a/drivers/thermal/of-thermal.c
> +++ b/drivers/thermal/of-thermal.c
> @@ -187,24 +187,15 @@ static int of_thermal_get_trend(struct thermal_zone_device *tz, int trip,
> enum thermal_trend *trend)
> {
> struct __thermal_zone *data = tz->devdata;
> - long dev_trend;
> int r;
>
> if (!data->ops->get_trend)
> return -EINVAL;
>
> - r = data->ops->get_trend(data->sensor_data, &dev_trend);
> + r = data->ops->get_trend(data->sensor_data, trip, trend);
> if (r)
> return r;
>
> - /* TODO: These intervals might have some thresholds, but in core code */
> - if (dev_trend > 0)
> - *trend = THERMAL_TREND_RAISING;
> - else if (dev_trend < 0)
> - *trend = THERMAL_TREND_DROPPING;
> - else
> - *trend = THERMAL_TREND_STABLE;
> -
> return 0;
> }
>
> diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> index a38c175..7f8e5f3 100644
> --- a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> +++ b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> @@ -238,7 +238,7 @@ static int ti_thermal_get_trip_temp(struct thermal_zone_device *thermal,
> return 0;
> }
>
> -static int __ti_thermal_get_trend(void *p, long *trend)
> +static int __ti_thermal_get_trend(void *p, int trip, enum thermal_trend *trend)
> {
> struct ti_thermal_data *data = p;
> struct ti_bandgap *bgp;
> @@ -251,22 +251,6 @@ static int __ti_thermal_get_trend(void *p, long *trend)
> if (ret)
> return ret;
>
> - *trend = tr;
> -
> - return 0;
> -}
> -
> -/* Get the temperature trend callback functions for thermal zone */
> -static int ti_thermal_get_trend(struct thermal_zone_device *thermal,
> - int trip, enum thermal_trend *trend)
> -{
> - int ret;
> - long tr;
> -
> - ret = __ti_thermal_get_trend(thermal->devdata, &tr);
> - if (ret)
> - return ret;
> -
> if (tr > 0)
> *trend = THERMAL_TREND_RAISING;
> else if (tr < 0)
> @@ -277,6 +261,13 @@ static int ti_thermal_get_trend(struct thermal_zone_device *thermal,
> return 0;
> }
>
> +/* Get the temperature trend callback functions for thermal zone */
> +static int ti_thermal_get_trend(struct thermal_zone_device *thermal,
> + int trip, enum thermal_trend *trend)
> +{
> + return __ti_thermal_get_trend(thermal->devdata, trip, trend);
> +}
> +
> /* Get critical temperature callback functions for thermal zone */
> static int ti_thermal_get_crit_temp(struct thermal_zone_device *thermal,
> unsigned long *temp)
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index db6c12b..ba2e29a 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -273,7 +273,7 @@ struct thermal_genl_event {
> */
> struct thermal_zone_of_device_ops {
> int (*get_temp)(void *, long *);
> - int (*get_trend)(void *, long *);
> + int (*get_trend)(void *, int trend, enum thermal_trend *);

Could you please keep the kernel doc entry up to date?

Apart from that, looks good to me.

> int (*set_emul_temp)(void *, unsigned long);
> };
>
> --
> 2.1.4
>

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 490 bytes --]