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Date: Tue, 14 Apr 2020 20:01:00 +0200
From: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
To: linux-pm@...r.kernel.org
Cc: Zhang Rui <rui.zhang@...el.com>,
"Rafael J . Wysocki" <rjw@...ysocki.net>,
Len Brown <lenb@...nel.org>, Jiri Pirko <jiri@...lanox.com>,
Ido Schimmel <idosch@...lanox.com>,
"David S . Miller" <davem@...emloft.net>,
Peter Kaestle <peter@...e.net>,
Darren Hart <dvhart@...radead.org>,
Andy Shevchenko <andy@...radead.org>,
Support Opensource <support.opensource@...semi.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Amit Kucheria <amit.kucheria@...durent.com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
NXP Linux Team <linux-imx@....com>,
Allison Randal <allison@...utok.net>,
Enrico Weigelt <info@...ux.net>,
Gayatri Kammela <gayatri.kammela@...el.com>,
Thomas Gleixner <tglx@...utronix.de>,
linux-acpi@...r.kernel.org, netdev@...r.kernel.org,
platform-driver-x86@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, kernel@...labora.com,
Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Subject: [RFC v2 4/9] thermal: core: Let thermal zone device's mode be stored in its struct
All the drivers which provide ->get_mode()/->set_mode() methods store their
mode in a thermal_device_mode enum, so keep this information in struct
thermal_zone_device rather than scattered all over the place.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
---
drivers/thermal/thermal_core.c | 28 +++++++++++++++++++
drivers/thermal/thermal_sysfs.c | 9 +++----
include/linux/thermal.h | 48 +++++++++++++++++++++++++++++++++
3 files changed, 79 insertions(+), 6 deletions(-)
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 9a321dc548c8..cb0ff47f0dbe 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -469,6 +469,34 @@ static void thermal_zone_device_reset(struct thermal_zone_device *tz)
thermal_zone_device_init(tz);
}
+int thermal_zone_device_get_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode *mode)
+{
+ if (tz->ops->get_mode)
+ return tz->ops->get_mode(tz, mode);
+
+ *mode = tz->mode;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_get_mode);
+
+int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode mode)
+{
+ if (mode != THERMAL_DEVICE_DISABLED &&
+ mode != THERMAL_DEVICE_ENABLED)
+ return -EINVAL;
+
+ if (tz->ops->set_mode)
+ return tz->ops->set_mode(tz, mode);
+
+ tz->mode = mode;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_set_mode);
+
void thermal_zone_device_update(struct thermal_zone_device *tz,
enum thermal_notify_event event)
{
diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index aa99edb4dff7..66d9691b8bd6 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -52,10 +52,7 @@ mode_show(struct device *dev, struct device_attribute *attr, char *buf)
enum thermal_device_mode mode;
int result;
- if (!tz->ops->get_mode)
- return -EPERM;
-
- result = tz->ops->get_mode(tz, &mode);
+ result = thermal_zone_device_get_mode(tz, &mode);
if (result)
return result;
@@ -74,9 +71,9 @@ mode_store(struct device *dev, struct device_attribute *attr,
return -EPERM;
if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
- result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
+ result = thermal_zone_device_enable(tz);
else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
- result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
+ result = thermal_zone_device_disable(tz);
else
result = -EINVAL;
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index c91b1e344d56..9ff8542b7e7d 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -143,6 +143,7 @@ struct thermal_attr {
* @trip_temp_attrs: attributes for trip points for sysfs: trip temperature
* @trip_type_attrs: attributes for trip points for sysfs: trip type
* @trip_hyst_attrs: attributes for trip points for sysfs: trip hysteresis
+ * @mode: current mode of this thermal zone
* @devdata: private pointer for device private data
* @trips: number of trip points the thermal zone supports
* @trips_disabled; bitmap for disabled trips
@@ -185,6 +186,7 @@ struct thermal_zone_device {
struct thermal_attr *trip_temp_attrs;
struct thermal_attr *trip_type_attrs;
struct thermal_attr *trip_hyst_attrs;
+ enum thermal_device_mode mode;
void *devdata;
int trips;
unsigned long trips_disabled; /* bitmap for disabled trips */
@@ -437,6 +439,19 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
unsigned int);
int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
struct thermal_cooling_device *);
+
+int thermal_zone_device_get_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode *mode);
+int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode mode);
+
+static inline void
+thermal_zone_device_store_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode mode)
+{
+ tz->mode = mode;
+}
+
void thermal_zone_device_update(struct thermal_zone_device *,
enum thermal_notify_event);
void thermal_zone_set_trips(struct thermal_zone_device *);
@@ -494,6 +509,17 @@ static inline int thermal_zone_unbind_cooling_device(
struct thermal_zone_device *tz, int trip,
struct thermal_cooling_device *cdev)
{ return -ENODEV; }
+static inline int thermal_zone_device_get_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode *mode)
+{ return -ENODEV; }
+static inline int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode mode)
+{ return -ENODEV; }
+static inline void
+thermal_zone_device_store_mode(struct thermal_zone_device *tz,
+ enum thermal_device_mode mode)
+{ }
+
static inline void thermal_zone_device_update(struct thermal_zone_device *tz,
enum thermal_notify_event event)
{ }
@@ -543,4 +569,26 @@ static inline void thermal_notify_framework(struct thermal_zone_device *tz,
{ }
#endif /* CONFIG_THERMAL */
+static inline int thermal_zone_device_enable(struct thermal_zone_device *tz)
+{
+ return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_ENABLED);
+}
+
+static inline int thermal_zone_device_disable(struct thermal_zone_device *tz)
+{
+ return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_DISABLED);
+}
+
+static inline void
+thermal_zone_device_store_enabled(struct thermal_zone_device *tz)
+{
+ thermal_zone_device_store_mode(tz, THERMAL_DEVICE_ENABLED);
+}
+
+static inline void
+thermal_zone_device_store_disabled(struct thermal_zone_device *tz)
+{
+ thermal_zone_device_store_mode(tz, THERMAL_DEVICE_DISABLED);
+}
+
#endif /* __THERMAL_H__ */
--
2.17.1
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