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authorEduardo Valentin <edubezval@gmail.com>2016-11-07 21:09:00 -0800
committerZhang Rui <rui.zhang@intel.com>2016-11-23 10:06:12 +0800
commita369ee88f7f6059a582087dc8bd9fc42b2731f5b (patch)
tree15b97cc029949dfcd3c2b3e1ecc6214f6b4213d2 /drivers/thermal/thermal_core.c
parent72afe8e54974823454e4c10d4b29e486ea79f6b7 (diff)
downloadlinux-a369ee88f7f6059a582087dc8bd9fc42b2731f5b.tar.bz2
thermal: core: move thermal_zone sysfs to thermal_sysfs.c
This is a code reorganization, simply to concentrate the code handling sysfs in a specific file: thermal_sysfs.c. Right now, moving only the sysfs entries of thermal_zone_device. Cc: Zhang Rui <rui.zhang@intel.com> Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal/thermal_core.c')
-rw-r--r--drivers/thermal/thermal_core.c609
1 files changed, 0 insertions, 609 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index f66c19c7f201..b14913ea5544 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -798,615 +798,6 @@ int thermal_build_list_of_policies(char *buf)
return count;
}
-/* sys I/F for thermal zone */
-
-static ssize_t
-type_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
-
- return sprintf(buf, "%s\n", tz->type);
-}
-
-static ssize_t
-temp_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- int temperature, ret;
-
- ret = thermal_zone_get_temp(tz, &temperature);
-
- if (ret)
- return ret;
-
- return sprintf(buf, "%d\n", temperature);
-}
-
-static ssize_t
-mode_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- enum thermal_device_mode mode;
- int result;
-
- if (!tz->ops->get_mode)
- return -EPERM;
-
- result = tz->ops->get_mode(tz, &mode);
- if (result)
- return result;
-
- return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
- : "disabled");
-}
-
-static ssize_t
-mode_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- int result;
-
- if (!tz->ops->set_mode)
- return -EPERM;
-
- if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
- result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
- else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
- result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
- else
- result = -EINVAL;
-
- if (result)
- return result;
-
- return count;
-}
-
-static ssize_t
-trip_point_type_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- enum thermal_trip_type type;
- int trip, result;
-
- if (!tz->ops->get_trip_type)
- return -EPERM;
-
- if (sscanf(attr->attr.name, "trip_point_%d_type", &trip) != 1)
- return -EINVAL;
-
- result = tz->ops->get_trip_type(tz, trip, &type);
- if (result)
- return result;
-
- switch (type) {
- case THERMAL_TRIP_CRITICAL:
- return sprintf(buf, "critical\n");
- case THERMAL_TRIP_HOT:
- return sprintf(buf, "hot\n");
- case THERMAL_TRIP_PASSIVE:
- return sprintf(buf, "passive\n");
- case THERMAL_TRIP_ACTIVE:
- return sprintf(buf, "active\n");
- default:
- return sprintf(buf, "unknown\n");
- }
-}
-
-static ssize_t
-trip_point_temp_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- int trip, ret;
- int temperature;
-
- if (!tz->ops->set_trip_temp)
- return -EPERM;
-
- if (sscanf(attr->attr.name, "trip_point_%d_temp", &trip) != 1)
- return -EINVAL;
-
- if (kstrtoint(buf, 10, &temperature))
- return -EINVAL;
-
- ret = tz->ops->set_trip_temp(tz, trip, temperature);
- if (ret)
- return ret;
-
- thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
-
- return count;
-}
-
-static ssize_t
-trip_point_temp_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- int trip, ret;
- int temperature;
-
- if (!tz->ops->get_trip_temp)
- return -EPERM;
-
- if (sscanf(attr->attr.name, "trip_point_%d_temp", &trip) != 1)
- return -EINVAL;
-
- ret = tz->ops->get_trip_temp(tz, trip, &temperature);
-
- if (ret)
- return ret;
-
- return sprintf(buf, "%d\n", temperature);
-}
-
-static ssize_t
-trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- int trip, ret;
- int temperature;
-
- if (!tz->ops->set_trip_hyst)
- return -EPERM;
-
- if (sscanf(attr->attr.name, "trip_point_%d_hyst", &trip) != 1)
- return -EINVAL;
-
- if (kstrtoint(buf, 10, &temperature))
- return -EINVAL;
-
- /*
- * We are not doing any check on the 'temperature' value
- * here. The driver implementing 'set_trip_hyst' has to
- * take care of this.
- */
- ret = tz->ops->set_trip_hyst(tz, trip, temperature);
-
- if (!ret)
- thermal_zone_set_trips(tz);
-
- return ret ? ret : count;
-}
-
-static ssize_t
-trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- int trip, ret;
- int temperature;
-
- if (!tz->ops->get_trip_hyst)
- return -EPERM;
-
- if (sscanf(attr->attr.name, "trip_point_%d_hyst", &trip) != 1)
- return -EINVAL;
-
- ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
-
- return ret ? ret : sprintf(buf, "%d\n", temperature);
-}
-
-static ssize_t
-passive_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- int state;
-
- if (sscanf(buf, "%d\n", &state) != 1)
- return -EINVAL;
-
- /* sanity check: values below 1000 millicelcius don't make sense
- * and can cause the system to go into a thermal heart attack
- */
- if (state && state < 1000)
- return -EINVAL;
-
- if (state && !tz->forced_passive) {
- if (!tz->passive_delay)
- tz->passive_delay = 1000;
- thermal_zone_device_rebind_exception(tz, "Processor",
- sizeof("Processor"));
- } else if (!state && tz->forced_passive) {
- tz->passive_delay = 0;
- thermal_zone_device_unbind_exception(tz, "Processor",
- sizeof("Processor"));
- }
-
- tz->forced_passive = state;
-
- thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
-
- return count;
-}
-
-static ssize_t
-passive_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
-
- return sprintf(buf, "%d\n", tz->forced_passive);
-}
-
-static ssize_t
-policy_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- char name[THERMAL_NAME_LENGTH];
- int ret;
-
- snprintf(name, sizeof(name), "%s", buf);
-
- ret = thermal_zone_device_set_policy(tz, name);
- if (!ret)
- ret = count;
-
- return ret;
-}
-
-static ssize_t
-policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
-
- return sprintf(buf, "%s\n", tz->governor->name);
-}
-
-static ssize_t
-available_policies_show(struct device *dev, struct device_attribute *devattr,
- char *buf)
-{
- return thermal_build_list_of_policies(buf);
-}
-
-static ssize_t
-emul_temp_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- int ret = 0;
- int temperature;
-
- if (kstrtoint(buf, 10, &temperature))
- return -EINVAL;
-
- if (!tz->ops->set_emul_temp) {
- mutex_lock(&tz->lock);
- tz->emul_temperature = temperature;
- mutex_unlock(&tz->lock);
- } else {
- ret = tz->ops->set_emul_temp(tz, temperature);
- }
-
- if (!ret)
- thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
-
- return ret ? ret : count;
-}
-
-static ssize_t
-sustainable_power_show(struct device *dev, struct device_attribute *devattr,
- char *buf)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
-
- if (tz->tzp)
- return sprintf(buf, "%u\n", tz->tzp->sustainable_power);
- else
- return -EIO;
-}
-
-static ssize_t
-sustainable_power_store(struct device *dev, struct device_attribute *devattr,
- const char *buf, size_t count)
-{
- struct thermal_zone_device *tz = to_thermal_zone(dev);
- u32 sustainable_power;
-
- if (!tz->tzp)
- return -EIO;
-
- if (kstrtou32(buf, 10, &sustainable_power))
- return -EINVAL;
-
- tz->tzp->sustainable_power = sustainable_power;
-
- return count;
-}
-
-#define create_s32_tzp_attr(name) \
- static ssize_t \
- name##_show(struct device *dev, struct device_attribute *devattr, \
- char *buf) \
- { \
- struct thermal_zone_device *tz = to_thermal_zone(dev); \
- \
- if (tz->tzp) \
- return sprintf(buf, "%d\n", tz->tzp->name); \
- else \
- return -EIO; \
- } \
- \
- static ssize_t \
- name##_store(struct device *dev, struct device_attribute *devattr, \
- const char *buf, size_t count) \
- { \
- struct thermal_zone_device *tz = to_thermal_zone(dev); \
- s32 value; \
- \
- if (!tz->tzp) \
- return -EIO; \
- \
- if (kstrtos32(buf, 10, &value)) \
- return -EINVAL; \
- \
- tz->tzp->name = value; \
- \
- return count; \
- } \
- static DEVICE_ATTR(name, S_IWUSR | S_IRUGO, name##_show, name##_store)
-
-create_s32_tzp_attr(k_po);
-create_s32_tzp_attr(k_pu);
-create_s32_tzp_attr(k_i);
-create_s32_tzp_attr(k_d);
-create_s32_tzp_attr(integral_cutoff);
-create_s32_tzp_attr(slope);
-create_s32_tzp_attr(offset);
-#undef create_s32_tzp_attr
-
-/*
- * These are thermal zone device attributes that will always be present.
- * All the attributes created for tzp (create_s32_tzp_attr) also are always
- * present on the sysfs interface.
- */
-static DEVICE_ATTR(type, 0444, type_show, NULL);
-static DEVICE_ATTR(temp, 0444, temp_show, NULL);
-static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
-static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
-static DEVICE_ATTR(available_policies, S_IRUGO, available_policies_show, NULL);
-static DEVICE_ATTR(sustainable_power, S_IWUSR | S_IRUGO, sustainable_power_show,
- sustainable_power_store);
-
-/* These thermal zone device attributes are created based on conditions */
-static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
-static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
-
-/* These attributes are unconditionally added to a thermal zone */
-static struct attribute *thermal_zone_dev_attrs[] = {
- &dev_attr_type.attr,
- &dev_attr_temp.attr,
-#if (IS_ENABLED(CONFIG_THERMAL_EMULATION))
- &dev_attr_emul_temp.attr,
-#endif
- &dev_attr_policy.attr,
- &dev_attr_available_policies.attr,
- &dev_attr_sustainable_power.attr,
- &dev_attr_k_po.attr,
- &dev_attr_k_pu.attr,
- &dev_attr_k_i.attr,
- &dev_attr_k_d.attr,
- &dev_attr_integral_cutoff.attr,
- &dev_attr_slope.attr,
- &dev_attr_offset.attr,
- NULL,
-};
-
-static struct attribute_group thermal_zone_attribute_group = {
- .attrs = thermal_zone_dev_attrs,
-};
-
-/* We expose mode only if .get_mode is present */
-static struct attribute *thermal_zone_mode_attrs[] = {
- &dev_attr_mode.attr,
- NULL,
-};
-
-static umode_t thermal_zone_mode_is_visible(struct kobject *kobj,
- struct attribute *attr,
- int attrno)
-{
- struct device *dev = container_of(kobj, struct device, kobj);
- struct thermal_zone_device *tz;
-
- tz = container_of(dev, struct thermal_zone_device, device);
-
- if (tz->ops->get_mode)
- return attr->mode;
-
- return 0;
-}
-
-static struct attribute_group thermal_zone_mode_attribute_group = {
- .attrs = thermal_zone_mode_attrs,
- .is_visible = thermal_zone_mode_is_visible,
-};
-
-/* We expose passive only if passive trips are present */
-static struct attribute *thermal_zone_passive_attrs[] = {
- &dev_attr_passive.attr,
- NULL,
-};
-
-static umode_t thermal_zone_passive_is_visible(struct kobject *kobj,
- struct attribute *attr,
- int attrno)
-{
- struct device *dev = container_of(kobj, struct device, kobj);
- struct thermal_zone_device *tz;
- enum thermal_trip_type trip_type;
- int count, passive = 0;
-
- tz = container_of(dev, struct thermal_zone_device, device);
-
- for (count = 0; count < tz->trips && !passive; count++) {
- tz->ops->get_trip_type(tz, count, &trip_type);
-
- if (trip_type == THERMAL_TRIP_PASSIVE)
- passive = 1;
- }
-
- if (!passive)
- return attr->mode;
-
- return 0;
-}
-
-static struct attribute_group thermal_zone_passive_attribute_group = {
- .attrs = thermal_zone_passive_attrs,
- .is_visible = thermal_zone_passive_is_visible,
-};
-
-static const struct attribute_group *thermal_zone_attribute_groups[] = {
- &thermal_zone_attribute_group,
- &thermal_zone_mode_attribute_group,
- &thermal_zone_passive_attribute_group,
- /* This is not NULL terminated as we create the group dynamically */
-};
-
-/**
- * create_trip_attrs() - create attributes for trip points
- * @tz: the thermal zone device
- * @mask: Writeable trip point bitmap.
- *
- * helper function to instantiate sysfs entries for every trip
- * point and its properties of a struct thermal_zone_device.
- *
- * Return: 0 on success, the proper error value otherwise.
- */
-static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
-{
- int size = sizeof(struct thermal_attr) * tz->trips;
- struct attribute **attrs;
- int indx;
-
- /* This function works only for zones with at least one trip */
- if (tz->trips <= 0)
- return -EINVAL;
-
- tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
- if (!tz->trip_type_attrs)
- return -ENOMEM;
-
- tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
- if (!tz->trip_temp_attrs) {
- kfree(tz->trip_type_attrs);
- return -ENOMEM;
- }
-
- if (tz->ops->get_trip_hyst) {
- tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
- if (!tz->trip_hyst_attrs) {
- kfree(tz->trip_type_attrs);
- kfree(tz->trip_temp_attrs);
- return -ENOMEM;
- }
- }
-
- attrs = kzalloc(sizeof(*attrs) * (tz->trips * 3 + 1), GFP_KERNEL);
- if (!attrs) {
- kfree(tz->trip_type_attrs);
- kfree(tz->trip_temp_attrs);
- if (tz->ops->get_trip_hyst)
- kfree(tz->trip_hyst_attrs);
- return -ENOMEM;
- }
-
- for (indx = 0; indx < tz->trips; indx++) {
- /* create trip type attribute */
- snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
- "trip_point_%d_type", indx);
-
- sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
- tz->trip_type_attrs[indx].attr.attr.name =
- tz->trip_type_attrs[indx].name;
- tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
- tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
- attrs[indx] = &tz->trip_type_attrs[indx].attr.attr;
-
- /* create trip temp attribute */
- snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
- "trip_point_%d_temp", indx);
-
- sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
- tz->trip_temp_attrs[indx].attr.attr.name =
- tz->trip_temp_attrs[indx].name;
- tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
- tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
- if (IS_ENABLED(CONFIG_THERMAL_WRITABLE_TRIPS) &&
- mask & (1 << indx)) {
- tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
- tz->trip_temp_attrs[indx].attr.store =
- trip_point_temp_store;
- }
- attrs[indx + tz->trips] = &tz->trip_temp_attrs[indx].attr.attr;
-
- /* create Optional trip hyst attribute */
- if (!tz->ops->get_trip_hyst)
- continue;
- snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
- "trip_point_%d_hyst", indx);
-
- sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
- tz->trip_hyst_attrs[indx].attr.attr.name =
- tz->trip_hyst_attrs[indx].name;
- tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
- tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
- if (tz->ops->set_trip_hyst) {
- tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
- tz->trip_hyst_attrs[indx].attr.store =
- trip_point_hyst_store;
- }
- attrs[indx + tz->trips * 2] =
- &tz->trip_hyst_attrs[indx].attr.attr;
- }
- attrs[tz->trips * 3] = NULL;
-
- tz->trips_attribute_group.attrs = attrs;
-
- return 0;
-}
-
-static int thermal_zone_create_device_groups(struct thermal_zone_device *tz,
- int mask)
-{
- const struct attribute_group **groups;
- int i, size, result;
-
- /* we need one extra for trips and the NULL to terminate the array */
- size = ARRAY_SIZE(thermal_zone_attribute_groups) + 2;
- /* This also takes care of API requirement to be NULL terminated */
- groups = kcalloc(size, sizeof(*groups), GFP_KERNEL);
- if (!groups)
- return -ENOMEM;
-
- for (i = 0; i < size - 2; i++)
- groups[i] = thermal_zone_attribute_groups[i];
-
- if (tz->trips) {
- result = create_trip_attrs(tz, mask);
- if (result) {
- kfree(groups);
-
- return result;
- }
-
- groups[size - 2] = &tz->trips_attribute_group;
- }
-
- tz->device.groups = groups;
-
- return 0;
-}
-
/* sys I/F for cooling device */
#define to_cooling_device(_dev) \
container_of(_dev, struct thermal_cooling_device, device)