From a369ee88f7f6059a582087dc8bd9fc42b2731f5b Mon Sep 17 00:00:00 2001 From: Eduardo Valentin Date: Mon, 7 Nov 2016 21:09:00 -0800 Subject: 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 Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Eduardo Valentin Signed-off-by: Zhang Rui --- drivers/thermal/thermal_core.c | 609 ----------------------------------------- 1 file changed, 609 deletions(-) (limited to 'drivers/thermal/thermal_core.c') 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) -- cgit v1.2.3-55-g7522