488  * acpi_dev_power_state_for_wake - Deepest power state for wakeup signaling
531 	if (adev->wakeup.flags.notifier_present) {  in acpi_pm_notify_handler()
532 		pm_wakeup_ws_event(adev->wakeup.ws, 0, acpi_s2idle_wakeup());  in acpi_pm_notify_handler()
533 		if (adev->wakeup.context.func) {  in acpi_pm_notify_handler()
535 					  adev->wakeup.context.func,  in acpi_pm_notify_handler()
536 					  dev_name(adev->wakeup.context.dev));  in acpi_pm_notify_handler()
537 			adev->wakeup.context.func(&adev->wakeup.context);  in acpi_pm_notify_handler()
549  * @dev: Device to generate a wakeup event for while handling the notification.
552  * NOTE: @adev need not be a run-wake or wakeup device to be a valid source of
553  * PM wakeup events.  For example, wakeup events may be generated for bridges
554  * if one of the devices below the bridge is signaling wakeup, even if the
555  * bridge itself doesn't have a wakeup GPE associated with it.
567 	if (adev->wakeup.flags.notifier_present)  in acpi_add_pm_notifier()
576 	adev->wakeup.ws = wakeup_source_register(&adev->dev,  in acpi_add_pm_notifier()
578 	adev->wakeup.context.dev = dev;  in acpi_add_pm_notifier()
579 	adev->wakeup.context.func = func;  in acpi_add_pm_notifier()
580 	adev->wakeup.flags.notifier_present = true;  in acpi_add_pm_notifier()
598 	if (!adev->wakeup.flags.notifier_present)  in acpi_remove_pm_notifier()
608 	adev->wakeup.context.func = NULL;  in acpi_remove_pm_notifier()
609 	adev->wakeup.context.dev = NULL;  in acpi_remove_pm_notifier()
610 	wakeup_source_unregister(adev->wakeup.ws);  in acpi_remove_pm_notifier()
611 	adev->wakeup.flags.notifier_present = false;  in acpi_remove_pm_notifier()
623 	return device && device->wakeup.flags.valid;  in acpi_bus_can_wakeup()
662 	bool wakeup = false;  in acpi_dev_pm_get_state()  local
669 	 * wakeup, in which case the return value of _S0W has to be used as the  in acpi_dev_pm_get_state()
707 		wakeup = device_may_wakeup(dev) && adev->wakeup.flags.valid  in acpi_dev_pm_get_state()
708 			&& adev->wakeup.sleep_state >= target_state;  in acpi_dev_pm_get_state()
722 		wakeup = true;  in acpi_dev_pm_get_state()
725 		wakeup = adev->wakeup.flags.valid;  in acpi_dev_pm_get_state()
731 	 * wakeup-aware driver if wake is set).  Still, if _SxW exists  in acpi_dev_pm_get_state()
735 	if (wakeup) {  in acpi_dev_pm_get_state()
821  * acpi_pm_notify_work_func - ACPI devices wakeup notification work function.
822  * @context: Device wakeup context.
839 	struct acpi_device_wakeup *wakeup = &adev->wakeup;  in __acpi_device_wakeup_enable()  local
846 	 * If the device wakeup power is already enabled, disable it and enable  in __acpi_device_wakeup_enable()
851 	if (wakeup->enable_count > 0)  in __acpi_device_wakeup_enable()
856 		if (wakeup->enable_count > 0) {  in __acpi_device_wakeup_enable()
857 			acpi_disable_gpe(wakeup->gpe_device, wakeup->gpe_number);  in __acpi_device_wakeup_enable()
858 			wakeup->enable_count = 0;  in __acpi_device_wakeup_enable()
863 	if (wakeup->enable_count > 0)  in __acpi_device_wakeup_enable()
866 	status = acpi_enable_gpe(wakeup->gpe_device, wakeup->gpe_number);  in __acpi_device_wakeup_enable()
873 	acpi_handle_debug(adev->handle, "GPE%2X enabled for wakeup\n",  in __acpi_device_wakeup_enable()
874 			  (unsigned int)wakeup->gpe_number);  in __acpi_device_wakeup_enable()
877 	if (wakeup->enable_count < INT_MAX)  in __acpi_device_wakeup_enable()
878 		wakeup->enable_count++;  in __acpi_device_wakeup_enable()
880 		acpi_handle_info(adev->handle, "Wakeup enable count out of bounds!\n");  in __acpi_device_wakeup_enable()
888  * acpi_device_wakeup_enable - Enable wakeup functionality for device.
889  * @adev: ACPI device to enable wakeup functionality for.
892  * Enable the GPE associated with @adev so that it can generate wakeup signals
893  * for the device in response to external (remote) events and enable wakeup
905  * acpi_device_wakeup_disable - Disable wakeup functionality for device.
906  * @adev: ACPI device to disable wakeup functionality for.
908  * Disable the GPE associated with @adev and disable wakeup power for it.
915 	struct acpi_device_wakeup *wakeup = &adev->wakeup;  in acpi_device_wakeup_disable()  local
919 	if (!wakeup->enable_count)  in acpi_device_wakeup_disable()
922 	acpi_disable_gpe(wakeup->gpe_device, wakeup->gpe_number);  in acpi_device_wakeup_disable()
925 	wakeup->enable_count--;  in acpi_device_wakeup_disable()
932  * acpi_pm_set_device_wakeup - Enable/disable remote wakeup for given device.
933  * @dev: Device to enable/disable to generate wakeup events.
934  * @enable: Whether to enable or disable the wakeup functionality.
952 		dev_dbg(dev, "Wakeup disabled by ACPI\n");  in acpi_pm_set_device_wakeup()
958 		dev_dbg(dev, "Wakeup enabled by ACPI\n");  in acpi_pm_set_device_wakeup()
995  * @wakeup: Whether or not to enable wakeup for the device.
998  * mechanism.  Set up remote wakeup if desired, choose the state to put the
999  * device into (this checks if remote wakeup is expected to work too), and set
1002 int acpi_dev_suspend(struct device *dev, bool wakeup)  in acpi_dev_suspend()  argument
1011 	if (wakeup && acpi_device_can_wakeup(adev)) {  in acpi_dev_suspend()
1016 		wakeup = false;  in acpi_dev_suspend()
1020 	if (error && wakeup)  in acpi_dev_suspend()
1032  * mechanism.  Set the power state of the device to ACPI D0 and disable wakeup.
1084 	if (!pm_runtime_suspended(dev) || !adev || (adev->wakeup.flags.valid &&  in acpi_dev_needs_resume()
1085 	    device_may_wakeup(dev) != !!adev->wakeup.prepare_count))  in acpi_dev_needs_resume()
1195 	 * to check whether or not the device's wakeup settings are good for  in acpi_subsys_suspend_noirq()
1379  * Remove the device from the general ACPI PM domain and remove its wakeup
1414  * attached to it, install a wakeup notification handler for the device and