From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guenter Roeck Subject: Re: [PATCHv2 06/16] hwmon: tmp102: expose to thermal fw via DT nodes Date: Wed, 18 Sep 2013 04:06:49 -0700 Message-ID: <20130918110649.GA9050@roeck-us.net> References: <523643D4.30208@roeck-us.net> <1379457245-17810-1-git-send-email-eduardo.valentin@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1379457245-17810-1-git-send-email-eduardo.valentin-l0cyMroinI0@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Eduardo Valentin Cc: swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, ian.campbell-Sxgqhf6Nn4DQT0dZR+AlfA@public.gmane.org, rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org, khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org, rui.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, wni-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, durgadoss.r-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, lm-sensors-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org On Tue, Sep 17, 2013 at 06:34:05PM -0400, Eduardo Valentin wrote: > This patch adds to tmp102 temperature sensor the possibility > to expose itself as thermal zone device, registered on the > thermal framework. > > The thermal zone is built only if a device tree node > describing a thermal zone for this sensor is present > inside the tmp102 DT node. Otherwise, the driver behavior > will be the same. > > Cc: Jean Delvare > Cc: Guenter Roeck > Cc: lm-sensors-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org > Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > Signed-off-by: Eduardo Valentin > --- > drivers/hwmon/tmp102.c | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > --- > > Guenter, > > Here is a version without the warnings, as requested. > > Eduardo > > diff --git a/drivers/hwmon/tmp102.c b/drivers/hwmon/tmp102.c > index d7b47ab..dc96598 100644 > --- a/drivers/hwmon/tmp102.c > +++ b/drivers/hwmon/tmp102.c > @@ -27,6 +27,8 @@ > #include > #include > #include > +#include > +#include > > #define DRIVER_NAME "tmp102" > > @@ -50,6 +52,7 @@ > > struct tmp102 { > struct device *hwmon_dev; > + struct thermal_zone_device *tz; > struct mutex lock; > u16 config_orig; > unsigned long last_update; > @@ -93,6 +96,15 @@ static struct tmp102 *tmp102_update_device(struct i2c_client *client) > return tmp102; > } > > +static int tmp102_read_temp(void *dev, long *temp) > +{ > + struct tmp102 *tmp102 = tmp102_update_device(to_i2c_client(dev)); > + > + *temp = tmp102->temp[0]; > + > + return 0; > +} > + > static ssize_t tmp102_show_temp(struct device *dev, > struct device_attribute *attr, > char *buf) > @@ -204,6 +216,12 @@ static int tmp102_probe(struct i2c_client *client, > goto fail_remove_sysfs; > } > > + tmp102->tz = thermal_zone_of_sensor_register(&client->dev, 0, > + &client->dev, > + tmp102_read_temp, NULL); > + if (IS_ERR(tmp102->tz)) > + tmp102->tz = NULL; > + > dev_info(&client->dev, "initialized\n"); > > return 0; > @@ -220,6 +238,8 @@ static int tmp102_remove(struct i2c_client *client) > { > struct tmp102 *tmp102 = i2c_get_clientdata(client); > > + /* thermal zone life cycle is not our responsibility */ This comment does not provide any value. Please drop it from both drivers. Sorry I missed that earlier. > + thermal_zone_of_sensor_unregister(&client->dev, tmp102->tz); > hwmon_device_unregister(tmp102->hwmon_dev); > sysfs_remove_group(&client->dev.kobj, &tmp102_attr_group); > > -- > 1.8.2.1.342.gfa7285d > > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html