With knowledge of supported thermal policies from this attribute, it helps in
setting the policy without failure from the available ones.
Signed-off-by: Sanjay Singh Rawat <sanjay.ra...@linaro.org>
---
drivers/thermal/thermal_core.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 71b0ec0..6caefcd 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -772,6 +772,25 @@ policy_show(struct device *dev, struct device_attribute
*devattr, char *buf)
return sprintf(buf, "%s\n", tz->governor->name);
}
+static ssize_t
+available_policy_show(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ ssize_t i = 0;
+ struct thermal_governor *temp;
+ struct thermal_zone_device *tz = to_thermal_zone(dev);
+
+ mutex_lock(&tz->lock);
+
+ list_for_each_entry(temp, &thermal_governor_list, governor_list)
+ i += sprintf(&buf[i], "%s ", temp->name);
+
+ mutex_unlock(&tz->lock);
+ i += sprintf(&buf[i], "\n");
+
+ return i;
+}
+
#ifdef CONFIG_THERMAL_EMULATION
static ssize_t
emul_temp_store(struct device *dev, struct device_attribute *attr,
@@ -805,6 +824,7 @@ static DEVICE_ATTR(temp, 0444, temp_show, NULL);
static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
+static DEVICE_ATTR(available_policy, S_IRUGO, available_policy_show, NULL);
/* sys I/F for cooling device */
#define to_cooling_device(_dev) \
@@ -1538,6 +1558,10 @@ struct thermal_zone_device
*thermal_zone_device_register(const char *type,
if (result)
goto unregister;
+ result = device_create_file(&tz->device, &dev_attr_available_policy);
+ if (result)
+ goto unregister;
+
/* Update 'this' zone's governor information */
mutex_lock(&thermal_governor_lock);
--
1.8.3.2
--
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