diff options
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/thermal_core.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 04659bfb888b..c4700950e42e 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -847,6 +847,27 @@ policy_show(struct device *dev, struct device_attribute *devattr, char *buf) return sprintf(buf, "%s\n", tz->governor->name); } +static ssize_t +available_policies_show(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct thermal_governor *pos; + ssize_t count = 0; + ssize_t size = PAGE_SIZE; + + mutex_lock(&thermal_governor_lock); + + list_for_each_entry(pos, &thermal_governor_list, governor_list) { + size = PAGE_SIZE - count; + count += scnprintf(buf + count, size, "%s ", pos->name); + } + count += scnprintf(buf + count, size, "\n"); + + mutex_unlock(&thermal_governor_lock); + + return count; +} + #ifdef CONFIG_THERMAL_EMULATION static ssize_t emul_temp_store(struct device *dev, struct device_attribute *attr, @@ -1032,6 +1053,7 @@ 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_policies, S_IRUGO, available_policies_show, NULL); /* sys I/F for cooling device */ #define to_cooling_device(_dev) \ @@ -1817,6 +1839,11 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type, if (result) goto unregister; + /* Create available_policies attribute */ + result = device_create_file(&tz->device, &dev_attr_available_policies); + if (result) + goto unregister; + /* Update 'this' zone's governor information */ mutex_lock(&thermal_governor_lock); @@ -1917,6 +1944,7 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz) if (tz->ops->get_mode) device_remove_file(&tz->device, &dev_attr_mode); device_remove_file(&tz->device, &dev_attr_policy); + device_remove_file(&tz->device, &dev_attr_available_policies); remove_trip_attrs(tz); thermal_set_governor(tz, NULL); |