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- /*
- * drivers/base/power/sysfs.c - sysfs entries for device PM
- */
- #include <linux/device.h>
- #include <linux/string.h>
- #include <linux/export.h>
- #include <linux/pm_qos.h>
- #include <linux/pm_runtime.h>
- #include <linux/atomic.h>
- #include <linux/jiffies.h>
- #include "power.h"
- /*
- * control - Report/change current runtime PM setting of the device
- *
- * Runtime power management of a device can be blocked with the help of
- * this attribute. All devices have one of the following two values for
- * the power/control file:
- *
- * + "auto\n" to allow the device to be power managed at run time;
- * + "on\n" to prevent the device from being power managed at run time;
- *
- * The default for all devices is "auto", which means that devices may be
- * subject to automatic power management, depending on their drivers.
- * Changing this attribute to "on" prevents the driver from power managing
- * the device at run time. Doing that while the device is suspended causes
- * it to be woken up.
- *
- * wakeup - Report/change current wakeup option for device
- *
- * Some devices support "wakeup" events, which are hardware signals
- * used to activate devices from suspended or low power states. Such
- * devices have one of three values for the sysfs power/wakeup file:
- *
- * + "enabled\n" to issue the events;
- * + "disabled\n" not to do so; or
- * + "\n" for temporary or permanent inability to issue wakeup.
- *
- * (For example, unconfigured USB devices can't issue wakeups.)
- *
- * Familiar examples of devices that can issue wakeup events include
- * keyboards and mice (both PS2 and USB styles), power buttons, modems,
- * "Wake-On-LAN" Ethernet links, GPIO lines, and more. Some events
- * will wake the entire system from a suspend state; others may just
- * wake up the device (if the system as a whole is already active).
- * Some wakeup events use normal IRQ lines; other use special out
- * of band signaling.
- *
- * It is the responsibility of device drivers to enable (or disable)
- * wakeup signaling as part of changing device power states, respecting
- * the policy choices provided through the driver model.
- *
- * Devices may not be able to generate wakeup events from all power
- * states. Also, the events may be ignored in some configurations;
- * for example, they might need help from other devices that aren't
- * active, or which may have wakeup disabled. Some drivers rely on
- * wakeup events internally (unless they are disabled), keeping
- * their hardware in low power modes whenever they're unused. This
- * saves runtime power, without requiring system-wide sleep states.
- *
- * async - Report/change current async suspend setting for the device
- *
- * Asynchronous suspend and resume of the device during system-wide power
- * state transitions can be enabled by writing "enabled" to this file.
- * Analogously, if "disabled" is written to this file, the device will be
- * suspended and resumed synchronously.
- *
- * All devices have one of the following two values for power/async:
- *
- * + "enabled\n" to permit the asynchronous suspend/resume of the device;
- * + "disabled\n" to forbid it;
- *
- * NOTE: It generally is unsafe to permit the asynchronous suspend/resume
- * of a device unless it is certain that all of the PM dependencies of the
- * device are known to the PM core. However, for some devices this
- * attribute is set to "enabled" by bus type code or device drivers and in
- * that cases it should be safe to leave the default value.
- *
- * autosuspend_delay_ms - Report/change a device's autosuspend_delay value
- *
- * Some drivers don't want to carry out a runtime suspend as soon as a
- * device becomes idle; they want it always to remain idle for some period
- * of time before suspending it. This period is the autosuspend_delay
- * value (expressed in milliseconds) and it can be controlled by the user.
- * If the value is negative then the device will never be runtime
- * suspended.
- *
- * NOTE: The autosuspend_delay_ms attribute and the autosuspend_delay
- * value are used only if the driver calls pm_runtime_use_autosuspend().
- *
- * wakeup_count - Report the number of wakeup events related to the device
- */
- const char power_group_name[] = "power";
- EXPORT_SYMBOL_GPL(power_group_name);
- static const char ctrl_auto[] = "auto";
- static const char ctrl_on[] = "on";
- static ssize_t control_show(struct device *dev, struct device_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "%s\n",
- dev->power.runtime_auto ? ctrl_auto : ctrl_on);
- }
- static ssize_t control_store(struct device * dev, struct device_attribute *attr,
- const char * buf, size_t n)
- {
- char *cp;
- int len = n;
- cp = memchr(buf, '\n', n);
- if (cp)
- len = cp - buf;
- device_lock(dev);
- if (len == sizeof ctrl_auto - 1 && strncmp(buf, ctrl_auto, len) == 0)
- pm_runtime_allow(dev);
- else if (len == sizeof ctrl_on - 1 && strncmp(buf, ctrl_on, len) == 0)
- pm_runtime_forbid(dev);
- else
- n = -EINVAL;
- device_unlock(dev);
- return n;
- }
- static DEVICE_ATTR(control, 0644, control_show, control_store);
- static ssize_t rtpm_active_time_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- int ret;
- spin_lock_irq(&dev->power.lock);
- update_pm_runtime_accounting(dev);
- ret = sprintf(buf, "%i\n", jiffies_to_msecs(dev->power.active_jiffies));
- spin_unlock_irq(&dev->power.lock);
- return ret;
- }
- static DEVICE_ATTR(runtime_active_time, 0444, rtpm_active_time_show, NULL);
- static ssize_t rtpm_suspended_time_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- int ret;
- spin_lock_irq(&dev->power.lock);
- update_pm_runtime_accounting(dev);
- ret = sprintf(buf, "%i\n",
- jiffies_to_msecs(dev->power.suspended_jiffies));
- spin_unlock_irq(&dev->power.lock);
- return ret;
- }
- static DEVICE_ATTR(runtime_suspended_time, 0444, rtpm_suspended_time_show, NULL);
- static ssize_t rtpm_status_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- const char *p;
- if (dev->power.runtime_error) {
- p = "error\n";
- } else if (dev->power.disable_depth) {
- p = "unsupported\n";
- } else {
- switch (dev->power.runtime_status) {
- case RPM_SUSPENDED:
- p = "suspended\n";
- break;
- case RPM_SUSPENDING:
- p = "suspending\n";
- break;
- case RPM_RESUMING:
- p = "resuming\n";
- break;
- case RPM_ACTIVE:
- p = "active\n";
- break;
- default:
- return -EIO;
- }
- }
- return sprintf(buf, p);
- }
- static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL);
- static ssize_t autosuspend_delay_ms_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- if (!dev->power.use_autosuspend)
- return -EIO;
- return sprintf(buf, "%d\n", dev->power.autosuspend_delay);
- }
- static ssize_t autosuspend_delay_ms_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t n)
- {
- long delay;
- if (!dev->power.use_autosuspend)
- return -EIO;
- if (kstrtol(buf, 10, &delay) != 0 || delay != (int) delay)
- return -EINVAL;
- device_lock(dev);
- pm_runtime_set_autosuspend_delay(dev, delay);
- device_unlock(dev);
- return n;
- }
- static DEVICE_ATTR(autosuspend_delay_ms, 0644, autosuspend_delay_ms_show,
- autosuspend_delay_ms_store);
- static ssize_t pm_qos_resume_latency_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "%d\n", dev_pm_qos_requested_resume_latency(dev));
- }
- static ssize_t pm_qos_resume_latency_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t n)
- {
- s32 value;
- int ret;
- if (kstrtos32(buf, 0, &value))
- return -EINVAL;
- if (value < 0)
- return -EINVAL;
- ret = dev_pm_qos_update_request(dev->power.qos->resume_latency_req,
- value);
- return ret < 0 ? ret : n;
- }
- static DEVICE_ATTR(pm_qos_resume_latency_us, 0644,
- pm_qos_resume_latency_show, pm_qos_resume_latency_store);
- static ssize_t pm_qos_latency_tolerance_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- s32 value = dev_pm_qos_get_user_latency_tolerance(dev);
- if (value < 0)
- return sprintf(buf, "auto\n");
- else if (value == PM_QOS_LATENCY_ANY)
- return sprintf(buf, "any\n");
- return sprintf(buf, "%d\n", value);
- }
- static ssize_t pm_qos_latency_tolerance_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t n)
- {
- s32 value;
- int ret;
- if (kstrtos32(buf, 0, &value)) {
- if (!strcmp(buf, "auto") || !strcmp(buf, "auto\n"))
- value = PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT;
- else if (!strcmp(buf, "any") || !strcmp(buf, "any\n"))
- value = PM_QOS_LATENCY_ANY;
- else
- return -EINVAL;
- }
- ret = dev_pm_qos_update_user_latency_tolerance(dev, value);
- return ret < 0 ? ret : n;
- }
- static DEVICE_ATTR(pm_qos_latency_tolerance_us, 0644,
- pm_qos_latency_tolerance_show, pm_qos_latency_tolerance_store);
- static ssize_t pm_qos_no_power_off_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "%d\n", !!(dev_pm_qos_requested_flags(dev)
- & PM_QOS_FLAG_NO_POWER_OFF));
- }
- static ssize_t pm_qos_no_power_off_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t n)
- {
- int ret;
- if (kstrtoint(buf, 0, &ret))
- return -EINVAL;
- if (ret != 0 && ret != 1)
- return -EINVAL;
- ret = dev_pm_qos_update_flags(dev, PM_QOS_FLAG_NO_POWER_OFF, ret);
- return ret < 0 ? ret : n;
- }
- static DEVICE_ATTR(pm_qos_no_power_off, 0644,
- pm_qos_no_power_off_show, pm_qos_no_power_off_store);
- static ssize_t pm_qos_remote_wakeup_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "%d\n", !!(dev_pm_qos_requested_flags(dev)
- & PM_QOS_FLAG_REMOTE_WAKEUP));
- }
- static ssize_t pm_qos_remote_wakeup_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t n)
- {
- int ret;
- if (kstrtoint(buf, 0, &ret))
- return -EINVAL;
- if (ret != 0 && ret != 1)
- return -EINVAL;
- ret = dev_pm_qos_update_flags(dev, PM_QOS_FLAG_REMOTE_WAKEUP, ret);
- return ret < 0 ? ret : n;
- }
- static DEVICE_ATTR(pm_qos_remote_wakeup, 0644,
- pm_qos_remote_wakeup_show, pm_qos_remote_wakeup_store);
- #ifdef CONFIG_PM_SLEEP
- static const char _enabled[] = "enabled";
- static const char _disabled[] = "disabled";
- static ssize_t
- wake_show(struct device * dev, struct device_attribute *attr, char * buf)
- {
- return sprintf(buf, "%s\n", device_can_wakeup(dev)
- ? (device_may_wakeup(dev) ? _enabled : _disabled)
- : "");
- }
- static ssize_t
- wake_store(struct device * dev, struct device_attribute *attr,
- const char * buf, size_t n)
- {
- char *cp;
- int len = n;
- if (!device_can_wakeup(dev))
- return -EINVAL;
- cp = memchr(buf, '\n', n);
- if (cp)
- len = cp - buf;
- if (len == sizeof _enabled - 1
- && strncmp(buf, _enabled, sizeof _enabled - 1) == 0)
- device_set_wakeup_enable(dev, 1);
- else if (len == sizeof _disabled - 1
- && strncmp(buf, _disabled, sizeof _disabled - 1) == 0)
- device_set_wakeup_enable(dev, 0);
- else
- return -EINVAL;
- return n;
- }
- static DEVICE_ATTR(wakeup, 0644, wake_show, wake_store);
- static ssize_t wakeup_count_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- unsigned long count = 0;
- bool enabled = false;
- spin_lock_irq(&dev->power.lock);
- if (dev->power.wakeup) {
- count = dev->power.wakeup->event_count;
- enabled = true;
- }
- spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n");
- }
- static DEVICE_ATTR(wakeup_count, 0444, wakeup_count_show, NULL);
- static ssize_t wakeup_active_count_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- unsigned long count = 0;
- bool enabled = false;
- spin_lock_irq(&dev->power.lock);
- if (dev->power.wakeup) {
- count = dev->power.wakeup->active_count;
- enabled = true;
- }
- spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n");
- }
- static DEVICE_ATTR(wakeup_active_count, 0444, wakeup_active_count_show, NULL);
- static ssize_t wakeup_abort_count_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- unsigned long count = 0;
- bool enabled = false;
- spin_lock_irq(&dev->power.lock);
- if (dev->power.wakeup) {
- count = dev->power.wakeup->wakeup_count;
- enabled = true;
- }
- spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n");
- }
- static DEVICE_ATTR(wakeup_abort_count, 0444, wakeup_abort_count_show, NULL);
- static ssize_t wakeup_expire_count_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- unsigned long count = 0;
- bool enabled = false;
- spin_lock_irq(&dev->power.lock);
- if (dev->power.wakeup) {
- count = dev->power.wakeup->expire_count;
- enabled = true;
- }
- spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n");
- }
- static DEVICE_ATTR(wakeup_expire_count, 0444, wakeup_expire_count_show, NULL);
- static ssize_t wakeup_active_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- unsigned int active = 0;
- bool enabled = false;
- spin_lock_irq(&dev->power.lock);
- if (dev->power.wakeup) {
- active = dev->power.wakeup->active;
- enabled = true;
- }
- spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%u\n", active) : sprintf(buf, "\n");
- }
- static DEVICE_ATTR(wakeup_active, 0444, wakeup_active_show, NULL);
- static ssize_t wakeup_total_time_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- s64 msec = 0;
- bool enabled = false;
- spin_lock_irq(&dev->power.lock);
- if (dev->power.wakeup) {
- msec = ktime_to_ms(dev->power.wakeup->total_time);
- enabled = true;
- }
- spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n");
- }
- static DEVICE_ATTR(wakeup_total_time_ms, 0444, wakeup_total_time_show, NULL);
- static ssize_t wakeup_max_time_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- s64 msec = 0;
- bool enabled = false;
- spin_lock_irq(&dev->power.lock);
- if (dev->power.wakeup) {
- msec = ktime_to_ms(dev->power.wakeup->max_time);
- enabled = true;
- }
- spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n");
- }
- static DEVICE_ATTR(wakeup_max_time_ms, 0444, wakeup_max_time_show, NULL);
- static ssize_t wakeup_last_time_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- s64 msec = 0;
- bool enabled = false;
- spin_lock_irq(&dev->power.lock);
- if (dev->power.wakeup) {
- msec = ktime_to_ms(dev->power.wakeup->last_time);
- enabled = true;
- }
- spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n");
- }
- static DEVICE_ATTR(wakeup_last_time_ms, 0444, wakeup_last_time_show, NULL);
- #ifdef CONFIG_PM_AUTOSLEEP
- static ssize_t wakeup_prevent_sleep_time_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- s64 msec = 0;
- bool enabled = false;
- spin_lock_irq(&dev->power.lock);
- if (dev->power.wakeup) {
- msec = ktime_to_ms(dev->power.wakeup->prevent_sleep_time);
- enabled = true;
- }
- spin_unlock_irq(&dev->power.lock);
- return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n");
- }
- static DEVICE_ATTR(wakeup_prevent_sleep_time_ms, 0444,
- wakeup_prevent_sleep_time_show, NULL);
- #endif /* CONFIG_PM_AUTOSLEEP */
- #endif /* CONFIG_PM_SLEEP */
- #ifdef CONFIG_PM_ADVANCED_DEBUG
- static ssize_t rtpm_usagecount_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- return sprintf(buf, "%d\n", atomic_read(&dev->power.usage_count));
- }
- static ssize_t rtpm_children_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- return sprintf(buf, "%d\n", dev->power.ignore_children ?
- 0 : atomic_read(&dev->power.child_count));
- }
- static ssize_t rtpm_enabled_show(struct device *dev,
- struct device_attribute *attr, char *buf)
- {
- if ((dev->power.disable_depth) && (dev->power.runtime_auto == false))
- return sprintf(buf, "disabled & forbidden\n");
- else if (dev->power.disable_depth)
- return sprintf(buf, "disabled\n");
- else if (dev->power.runtime_auto == false)
- return sprintf(buf, "forbidden\n");
- return sprintf(buf, "enabled\n");
- }
- static DEVICE_ATTR(runtime_usage, 0444, rtpm_usagecount_show, NULL);
- static DEVICE_ATTR(runtime_active_kids, 0444, rtpm_children_show, NULL);
- static DEVICE_ATTR(runtime_enabled, 0444, rtpm_enabled_show, NULL);
- #ifdef CONFIG_PM_SLEEP
- static ssize_t async_show(struct device *dev, struct device_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "%s\n",
- device_async_suspend_enabled(dev) ?
- _enabled : _disabled);
- }
- static ssize_t async_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t n)
- {
- char *cp;
- int len = n;
- cp = memchr(buf, '\n', n);
- if (cp)
- len = cp - buf;
- if (len == sizeof _enabled - 1 && strncmp(buf, _enabled, len) == 0)
- device_enable_async_suspend(dev);
- else if (len == sizeof _disabled - 1 &&
- strncmp(buf, _disabled, len) == 0)
- device_disable_async_suspend(dev);
- else
- return -EINVAL;
- return n;
- }
- static DEVICE_ATTR(async, 0644, async_show, async_store);
- #endif /* CONFIG_PM_SLEEP */
- #endif /* CONFIG_PM_ADVANCED_DEBUG */
- static struct attribute *power_attrs[] = {
- #ifdef CONFIG_PM_ADVANCED_DEBUG
- #ifdef CONFIG_PM_SLEEP
- &dev_attr_async.attr,
- #endif
- &dev_attr_runtime_status.attr,
- &dev_attr_runtime_usage.attr,
- &dev_attr_runtime_active_kids.attr,
- &dev_attr_runtime_enabled.attr,
- #endif /* CONFIG_PM_ADVANCED_DEBUG */
- NULL,
- };
- static struct attribute_group pm_attr_group = {
- .name = power_group_name,
- .attrs = power_attrs,
- };
- static struct attribute *wakeup_attrs[] = {
- #ifdef CONFIG_PM_SLEEP
- &dev_attr_wakeup.attr,
- &dev_attr_wakeup_count.attr,
- &dev_attr_wakeup_active_count.attr,
- &dev_attr_wakeup_abort_count.attr,
- &dev_attr_wakeup_expire_count.attr,
- &dev_attr_wakeup_active.attr,
- &dev_attr_wakeup_total_time_ms.attr,
- &dev_attr_wakeup_max_time_ms.attr,
- &dev_attr_wakeup_last_time_ms.attr,
- #ifdef CONFIG_PM_AUTOSLEEP
- &dev_attr_wakeup_prevent_sleep_time_ms.attr,
- #endif
- #endif
- NULL,
- };
- static struct attribute_group pm_wakeup_attr_group = {
- .name = power_group_name,
- .attrs = wakeup_attrs,
- };
- static struct attribute *runtime_attrs[] = {
- #ifndef CONFIG_PM_ADVANCED_DEBUG
- &dev_attr_runtime_status.attr,
- #endif
- &dev_attr_control.attr,
- &dev_attr_runtime_suspended_time.attr,
- &dev_attr_runtime_active_time.attr,
- &dev_attr_autosuspend_delay_ms.attr,
- NULL,
- };
- static struct attribute_group pm_runtime_attr_group = {
- .name = power_group_name,
- .attrs = runtime_attrs,
- };
- static struct attribute *pm_qos_resume_latency_attrs[] = {
- &dev_attr_pm_qos_resume_latency_us.attr,
- NULL,
- };
- static struct attribute_group pm_qos_resume_latency_attr_group = {
- .name = power_group_name,
- .attrs = pm_qos_resume_latency_attrs,
- };
- static struct attribute *pm_qos_latency_tolerance_attrs[] = {
- &dev_attr_pm_qos_latency_tolerance_us.attr,
- NULL,
- };
- static struct attribute_group pm_qos_latency_tolerance_attr_group = {
- .name = power_group_name,
- .attrs = pm_qos_latency_tolerance_attrs,
- };
- static struct attribute *pm_qos_flags_attrs[] = {
- &dev_attr_pm_qos_no_power_off.attr,
- &dev_attr_pm_qos_remote_wakeup.attr,
- NULL,
- };
- static struct attribute_group pm_qos_flags_attr_group = {
- .name = power_group_name,
- .attrs = pm_qos_flags_attrs,
- };
- int dpm_sysfs_add(struct device *dev)
- {
- int rc;
- rc = sysfs_create_group(&dev->kobj, &pm_attr_group);
- if (rc)
- return rc;
- if (pm_runtime_callbacks_present(dev)) {
- rc = sysfs_merge_group(&dev->kobj, &pm_runtime_attr_group);
- if (rc)
- goto err_out;
- }
- if (device_can_wakeup(dev)) {
- rc = sysfs_merge_group(&dev->kobj, &pm_wakeup_attr_group);
- if (rc)
- goto err_runtime;
- }
- if (dev->power.set_latency_tolerance) {
- rc = sysfs_merge_group(&dev->kobj,
- &pm_qos_latency_tolerance_attr_group);
- if (rc)
- goto err_wakeup;
- }
- return 0;
- err_wakeup:
- sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group);
- err_runtime:
- sysfs_unmerge_group(&dev->kobj, &pm_runtime_attr_group);
- err_out:
- sysfs_remove_group(&dev->kobj, &pm_attr_group);
- return rc;
- }
- int wakeup_sysfs_add(struct device *dev)
- {
- return sysfs_merge_group(&dev->kobj, &pm_wakeup_attr_group);
- }
- void wakeup_sysfs_remove(struct device *dev)
- {
- sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group);
- }
- int pm_qos_sysfs_add_resume_latency(struct device *dev)
- {
- return sysfs_merge_group(&dev->kobj, &pm_qos_resume_latency_attr_group);
- }
- void pm_qos_sysfs_remove_resume_latency(struct device *dev)
- {
- sysfs_unmerge_group(&dev->kobj, &pm_qos_resume_latency_attr_group);
- }
- int pm_qos_sysfs_add_flags(struct device *dev)
- {
- return sysfs_merge_group(&dev->kobj, &pm_qos_flags_attr_group);
- }
- void pm_qos_sysfs_remove_flags(struct device *dev)
- {
- sysfs_unmerge_group(&dev->kobj, &pm_qos_flags_attr_group);
- }
- int pm_qos_sysfs_add_latency_tolerance(struct device *dev)
- {
- return sysfs_merge_group(&dev->kobj,
- &pm_qos_latency_tolerance_attr_group);
- }
- void pm_qos_sysfs_remove_latency_tolerance(struct device *dev)
- {
- sysfs_unmerge_group(&dev->kobj, &pm_qos_latency_tolerance_attr_group);
- }
- void rpm_sysfs_remove(struct device *dev)
- {
- sysfs_unmerge_group(&dev->kobj, &pm_runtime_attr_group);
- }
- void dpm_sysfs_remove(struct device *dev)
- {
- sysfs_unmerge_group(&dev->kobj, &pm_qos_latency_tolerance_attr_group);
- dev_pm_qos_constraints_destroy(dev);
- rpm_sysfs_remove(dev);
- sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group);
- sysfs_remove_group(&dev->kobj, &pm_attr_group);
- }
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