11 #include "power.h"
16  *	Runtime power management of a device can be blocked with the help of
18  *	the power/control file:
20  *	 + "auto\n" to allow the device to be power managed at run time;
21  *	 + "on\n" to prevent the device from being power managed at run time;
24  *	subject to automatic power management, depending on their drivers.
25  *	Changing this attribute to "on" prevents the driver from power managing
32  *	used to activate devices from suspended or low power states.  Such
33  *	devices have one of three values for the sysfs power/wakeup file:
42  *	keyboards and mice (both PS2 and USB styles), power buttons, modems,
50  *	wakeup signaling as part of changing device power states, respecting
53  *	Devices may not be able to generate wakeup events from all power
58  *	their hardware in low power modes whenever they're unused.  This
59  *	saves runtime power, without requiring system-wide sleep states.
63  *	Asynchronous suspend and resume of the device during system-wide power
68  *	All devices have one of the following two values for power/async:
94 const char power_group_name[] = "power";
104 				dev->power.runtime_auto ? ctrl_auto : ctrl_on);  in control_show()
152 	if (dev->power.runtime_error) {  in runtime_status_show()
154 	} else if (dev->power.disable_depth) {  in runtime_status_show()
157 		switch (dev->power.runtime_status) {  in runtime_status_show()
182 	if (!dev->power.use_autosuspend)  in autosuspend_delay_ms_show()
184 	return sprintf(buf, "%d\n", dev->power.autosuspend_delay);  in autosuspend_delay_ms_show()
192 	if (!dev->power.use_autosuspend)  in autosuspend_delay_ms_store()
243 	ret = dev_pm_qos_update_request(dev->power.qos->resume_latency_req,  in pm_qos_resume_latency_us_store()
350 	spin_lock_irq(&dev->power.lock);  in wakeup_count_show()
351 	if (dev->power.wakeup) {  in wakeup_count_show()
352 		count = dev->power.wakeup->wakeup_count;  in wakeup_count_show()
355 	spin_unlock_irq(&dev->power.lock);  in wakeup_count_show()
368 	spin_lock_irq(&dev->power.lock);  in wakeup_active_count_show()
369 	if (dev->power.wakeup) {  in wakeup_active_count_show()
370 		count = dev->power.wakeup->active_count;  in wakeup_active_count_show()
373 	spin_unlock_irq(&dev->power.lock);  in wakeup_active_count_show()
386 	spin_lock_irq(&dev->power.lock);  in wakeup_abort_count_show()
387 	if (dev->power.wakeup) {  in wakeup_abort_count_show()
388 		count = dev->power.wakeup->wakeup_count;  in wakeup_abort_count_show()
391 	spin_unlock_irq(&dev->power.lock);  in wakeup_abort_count_show()
404 	spin_lock_irq(&dev->power.lock);  in wakeup_expire_count_show()
405 	if (dev->power.wakeup) {  in wakeup_expire_count_show()
406 		count = dev->power.wakeup->expire_count;  in wakeup_expire_count_show()
409 	spin_unlock_irq(&dev->power.lock);  in wakeup_expire_count_show()
421 	spin_lock_irq(&dev->power.lock);  in wakeup_active_show()
422 	if (dev->power.wakeup) {  in wakeup_active_show()
423 		active = dev->power.wakeup->active;  in wakeup_active_show()
426 	spin_unlock_irq(&dev->power.lock);  in wakeup_active_show()
439 	spin_lock_irq(&dev->power.lock);  in wakeup_total_time_ms_show()
440 	if (dev->power.wakeup) {  in wakeup_total_time_ms_show()
441 		msec = ktime_to_ms(dev->power.wakeup->total_time);  in wakeup_total_time_ms_show()
444 	spin_unlock_irq(&dev->power.lock);  in wakeup_total_time_ms_show()
456 	spin_lock_irq(&dev->power.lock);  in wakeup_max_time_ms_show()
457 	if (dev->power.wakeup) {  in wakeup_max_time_ms_show()
458 		msec = ktime_to_ms(dev->power.wakeup->max_time);  in wakeup_max_time_ms_show()
461 	spin_unlock_irq(&dev->power.lock);  in wakeup_max_time_ms_show()
474 	spin_lock_irq(&dev->power.lock);  in wakeup_last_time_ms_show()
475 	if (dev->power.wakeup) {  in wakeup_last_time_ms_show()
476 		msec = ktime_to_ms(dev->power.wakeup->last_time);  in wakeup_last_time_ms_show()
479 	spin_unlock_irq(&dev->power.lock);  in wakeup_last_time_ms_show()
493 	spin_lock_irq(&dev->power.lock);  in wakeup_prevent_sleep_time_ms_show()
494 	if (dev->power.wakeup) {  in wakeup_prevent_sleep_time_ms_show()
495 		msec = ktime_to_ms(dev->power.wakeup->prevent_sleep_time);  in wakeup_prevent_sleep_time_ms_show()
498 	spin_unlock_irq(&dev->power.lock);  in wakeup_prevent_sleep_time_ms_show()
510 	return sprintf(buf, "%d\n", atomic_read(&dev->power.usage_count));  in runtime_usage_show()
518 	return sprintf(buf, "%d\n", dev->power.ignore_children ?  in runtime_active_kids_show()
519 		0 : atomic_read(&dev->power.child_count));  in runtime_active_kids_show()
526 	if (dev->power.disable_depth && (dev->power.runtime_auto == false))  in runtime_enabled_show()
528 	if (dev->power.disable_depth)  in runtime_enabled_show()
530 	if (dev->power.runtime_auto == false)  in runtime_enabled_show()
665 	if (dev->power.set_latency_tolerance) {  in dpm_sysfs_add()