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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

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

WARNING: multiple messages have this Message-ID
From: s.hauer@pengutronix.de (Sascha Hauer)
To: linux-arm-kernel@lists.infradead.org
Subject: [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

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

  reply	other threads:[~2015-04-14 10:48 UTC|newest]

Thread overview: 89+ 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 ` Sascha Hauer
2015-03-26 15:53 ` [PATCH 01/13] thermal: Make temperatures consistently unsigned long Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-03-27 10:18   ` Punit Agrawal
2015-03-27 10:18     ` Punit Agrawal
2015-03-27 19:07     ` Sascha Hauer
2015-03-27 19:07       ` Sascha Hauer
2015-04-07  1:47       ` Eduardo Valentin
2015-04-07  1:47         ` Eduardo Valentin
2015-04-07  1:45   ` Eduardo Valentin
2015-04-07  1:45     ` Eduardo Valentin
2015-04-27 20:36   ` Pavel Machek
2015-04-27 20:36     ` Pavel Machek
2015-04-28  7:42     ` Sascha Hauer
2015-04-28  7:42       ` Sascha Hauer
2015-03-26 15:53 ` [PATCH 02/13] thermal: trivial: fix typo in comment Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-04-07  1:49   ` Eduardo Valentin
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
2015-03-26 15:53   ` Sascha Hauer
2015-04-07  2:56   ` Eduardo Valentin
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 15:53   ` Sascha Hauer
2015-03-26 18:13   ` Carlos Hernandez
2015-03-26 18:13     ` Carlos Hernandez
2015-03-26 18:13     ` Carlos Hernandez
2015-03-26 18:55     ` Sascha Hauer
2015-03-26 18:55       ` Sascha Hauer
2015-03-27  3:05   ` amit daniel kachhap
2015-03-27  3:05     ` amit daniel kachhap
2015-03-27  5:23     ` Sascha Hauer
2015-03-27  5:23       ` Sascha Hauer
2015-04-07  2:08       ` Eduardo Valentin
2015-04-07  2:08         ` Eduardo Valentin
2015-03-26 15:53 ` [PATCH 05/13] thermal: inline only once used function Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-04-07  2:23   ` Eduardo Valentin
2015-04-07  2:23     ` Eduardo Valentin
2015-04-14 10:44     ` Sascha Hauer
2015-04-14 10:44       ` Sascha Hauer
2015-04-14 10:44       ` Sascha Hauer
2015-03-26 15:53 ` [PATCH 06/13] thermal: streamline get_trend callbacks Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-04-07  3:19   ` Eduardo Valentin
2015-04-07  3:19     ` Eduardo Valentin
2015-04-14 10:48     ` Sascha Hauer [this message]
2015-04-14 10:48       ` Sascha Hauer
2015-03-26 15:53 ` [PATCH 07/13] thermal: of: streamline .get_temp callbacks Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-04-07  2:27   ` Eduardo Valentin
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   ` Sascha Hauer
2015-03-26 15:53 ` [PATCH 09/13] thermal: of: always set sensor related callbacks Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-04-07  3:25   ` Eduardo Valentin
2015-04-07  3:25     ` Eduardo Valentin
2015-04-14 10:54     ` Sascha Hauer
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
2015-03-26 15:53   ` Sascha Hauer
2015-04-07  3:29   ` Eduardo Valentin
2015-04-07  3:29     ` Eduardo Valentin
2015-03-26 15:53 ` [PATCH 11/13] thermal: of: make of_thermal_ops const Sascha Hauer
2015-03-26 15:53   ` Sascha Hauer
2015-04-07  3:27   ` Eduardo Valentin
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
2015-03-26 15:53   ` Sascha Hauer
2015-04-07  2:40   ` Eduardo Valentin
2015-04-07  2:40     ` Eduardo Valentin
2015-04-15 18:06   ` Brian Norris
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
2015-03-26 15:54   ` Sascha Hauer
2015-04-07  2:43   ` Eduardo Valentin
2015-04-07  2:43     ` Eduardo Valentin
2015-04-13  6:30     ` Sascha Hauer
2015-04-13  6:30       ` Sascha Hauer
2015-04-15 17:59       ` Brian Norris
2015-04-15 17:59         ` Brian Norris
2015-04-17  5:22         ` Sascha Hauer
2015-04-17  5:22           ` Sascha Hauer

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