linux-kernel - [PATCH 2/4] thermal: of: implement .set

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Date:	Mon, 25 Apr 2016 11:02:45 +0800
From:	Caesar Wang <wxt@...k-chips.com>
To:	edubezval@...il.com
Cc:	Heiko Stuebner <heiko@...ech.de>, dianders@...omium.org,
	briannorris@...gle.com, smbarber@...gle.com,
	linux-rockchip@...ts.infradead.org, dmitry.torokhov@...il.com,
	huangtao@...k-chips.com, eddie.cai@...k-chips.com,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Caesar Wang <wxt@...k-chips.com>,
	Zhang Rui <rui.zhang@...el.com>, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] thermal: of: implement .set_trips for device tree thermal zones

From: Sascha Hauer <s.hauer@...gutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
Signed-off-by: Caesar Wang <wxt@...k-chips.com>
Cc: Zhang Rui <rui.zhang@...el.com>
Cc: Eduardo Valentin <edubezval@...il.com>
Cc: linux-pm@...r.kernel.org
---

 drivers/thermal/of-thermal.c | 12 ++++++++++++
 include/linux/thermal.h      |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index b8e509c..8722e63 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -101,6 +101,17 @@ static int of_thermal_get_temp(struct thermal_zone_device *tz,
 	return data->ops->get_temp(data->sensor_data, temp);
 }
 
+static int of_thermal_set_trips(struct thermal_zone_device *tz,
+				int low, int high)
+{
+	struct __thermal_zone *data = tz->devdata;
+
+	if (!data->ops || !data->ops->set_trips)
+		return -EINVAL;
+
+	return data->ops->set_trips(data->sensor_data, low, high);
+}
+
 /**
  * of_thermal_get_ntrips - function to export number of available trip
  *			   points.
@@ -427,6 +438,7 @@ thermal_zone_of_add_sensor(struct device_node *zone,
 
 	tzd->ops->get_temp = of_thermal_get_temp;
 	tzd->ops->get_trend = of_thermal_get_trend;
+	tzd->ops->set_trips = of_thermal_set_trips;
 	tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
 	mutex_unlock(&tzd->lock);
 
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index e258359..cb64866 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -336,12 +336,16 @@ struct thermal_genl_event {
  *
  * Optional:
  * @get_trend: a pointer to a function that reads the sensor temperature trend.
+ * @@set_trips: a pointer to a function that sets a temperature window. When
+ *		this window is left the driver must inform the thermal core via
+ *              thermal_zone_device_update.
  * @set_emul_temp: a pointer to a function that sets sensor emulated
  *		   temperature.
  */
 struct thermal_zone_of_device_ops {
 	int (*get_temp)(void *, int *);
 	int (*get_trend)(void *, long *);
+	int (*set_trips)(void *, int, int);
 	int (*set_emul_temp)(void *, int);
 	int (*set_trip_temp)(void *, int, int);
 };
-- 
1.9.1