From: Sascha Hauer <s.hauer@pengutronix.de>
To: Eduardo Valentin <edubezval@gmail.com>
Cc: linux-pm@vger.kernel.org, Zhang Rui <rui.zhang@intel.com>,
linux-kernel@vger.kernel.org,
Stephen Warren <swarren@wwwdotorg.org>,
Mikko Perttunen <mikko.perttunen@kapsi.fi>,
kernel@pengutronix.de, linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 06/13] thermal: streamline get_trend callbacks
Date: Tue, 14 Apr 2015 12:48:36 +0200 [thread overview]
Message-ID: <20150414104836.GJ4946@pengutronix.de> (raw)
In-Reply-To: <20150407031950.GK4648@localhost.localdomain>
On Mon, Apr 06, 2015 at 08:19:52PM -0700, Eduardo Valentin wrote:
> 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?
What do you mean? The kernel doc entry for this function contains:
* @get_trend: a pointer to a function that reads the sensor temperature trend.
This is still valid with my patch, so I might not understand what I
should keep up to date.
That said, the argument name above should be 'int trip', not 'int
trend'. I'll change that.
Sascha
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next prev parent reply other threads:[~2015-04-14 10:48 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-26 15:53 Thermal: Cleanups, fixes and hardware trip points Sascha Hauer
2015-03-26 15:53 ` [PATCH 01/13] thermal: Make temperatures consistently unsigned long Sascha Hauer
2015-03-27 10:18 ` Punit Agrawal
2015-03-27 19:07 ` Sascha Hauer
2015-04-07 1:47 ` Eduardo Valentin
2015-04-07 1:45 ` Eduardo Valentin
2015-04-27 20:36 ` Pavel Machek
2015-04-28 7:42 ` Sascha Hauer
2015-03-26 15:53 ` [PATCH 02/13] thermal: trivial: fix typo in comment Sascha Hauer
2015-04-07 1:49 ` Eduardo Valentin
2015-03-26 15:53 ` [PATCH 03/13] thermal: remove useless call to thermal_zone_device_set_polling Sascha Hauer
2015-04-07 2:56 ` Eduardo Valentin
2015-03-26 15:53 ` [PATCH 04/13] thermal: Fix not emulating critical temperatures Sascha Hauer
2015-03-26 18:13 ` Carlos Hernandez
2015-03-26 18:55 ` Sascha Hauer
2015-03-27 3:05 ` amit daniel kachhap
2015-03-27 5:23 ` Sascha Hauer
2015-04-07 2:08 ` Eduardo Valentin
2015-03-26 15:53 ` [PATCH 05/13] thermal: inline only once used function Sascha Hauer
2015-04-07 2:23 ` Eduardo Valentin
2015-04-14 10:44 ` Sascha Hauer
2015-03-26 15:53 ` [PATCH 06/13] thermal: streamline get_trend callbacks Sascha Hauer
2015-04-07 3:19 ` Eduardo Valentin
2015-04-14 10:48 ` Sascha Hauer [this message]
2015-03-26 15:53 ` [PATCH 07/13] thermal: of: streamline .get_temp callbacks Sascha Hauer
2015-04-07 2:27 ` Eduardo Valentin
2015-03-26 15:53 ` [PATCH 08/13] thermal: Allow sensor ops to fail with -ENOSYS Sascha Hauer
2015-03-26 15:53 ` [PATCH 09/13] thermal: of: always set sensor related callbacks Sascha Hauer
2015-04-07 3:25 ` Eduardo Valentin
2015-04-14 10:54 ` Sascha Hauer
2015-03-26 15:53 ` [PATCH 10/13] thermal: Make struct thermal_zone_device_ops const Sascha Hauer
2015-04-07 3:29 ` Eduardo Valentin
2015-03-26 15:53 ` [PATCH 11/13] thermal: of: make of_thermal_ops const Sascha Hauer
2015-04-07 3:27 ` Eduardo Valentin
2015-03-26 15:53 ` [PATCH 12/13] thermal: Add support for hardware-tracked trip points Sascha Hauer
2015-04-07 2:40 ` Eduardo Valentin
2015-04-15 18:06 ` Brian Norris
2015-03-26 15:54 ` [PATCH 13/13] thermal: of: implement .set_trips for device tree thermal zones Sascha Hauer
2015-04-07 2:43 ` Eduardo Valentin
2015-04-13 6:30 ` Sascha Hauer
2015-04-15 17:59 ` Brian Norris
2015-04-17 5:22 ` Sascha Hauer
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