3  * drivers/acpi/power.c - ACPI Power Resources management.
15  * The code below deals with ACPI Power Resources control.
20  * A device may rely on multiple power resources, and a power resource
227 	/* The state of the list is 'on' IFF all resources are 'on'. */  in acpi_power_get_list_state()
303  * power resources returned by it. This means that whenever these power
304  * resources are turned _ON the dependent devices get runtime resumed. This
316 	struct list_head *resources;  in acpi_device_power_add_dependent()  local
322 	resources = &adev->power.states[ACPI_STATE_D0].resources;  in acpi_device_power_add_dependent()
323 	list_for_each_entry(entry, resources, node) {  in acpi_device_power_add_dependent()
332 	list_for_each_entry(entry, resources, node)  in acpi_device_power_add_dependent()
351 	struct list_head *resources;  in acpi_device_power_remove_dependent()  local
356 	resources = &adev->power.states[ACPI_STATE_D0].resources;  in acpi_device_power_remove_dependent()
357 	list_for_each_entry_reverse(entry, resources, node)  in acpi_device_power_remove_dependent()
536 				 struct list_head *resources,  in acpi_power_hide_list()  argument
541 	if (list_empty(resources))  in acpi_power_hide_list()
544 	list_for_each_entry_reverse(entry, resources, node) {  in acpi_power_hide_list()
555 				   struct list_head *resources,  in acpi_power_expose_list()  argument
561 	if (list_empty(resources))  in acpi_power_expose_list()
568 	list_for_each_entry(entry, resources, node) {  in acpi_power_expose_list()
576 			acpi_power_hide_list(adev, resources, attr_group);  in acpi_power_expose_list()
583 				   struct list_head *resources,  in acpi_power_expose_hide()  argument
588 		acpi_power_expose_list(adev, resources, attr_group);  in acpi_power_expose_hide()
590 		acpi_power_hide_list(adev, resources, attr_group);  in acpi_power_expose_hide()
598 		acpi_power_expose_hide(adev, &adev->wakeup.resources,  in acpi_power_add_remove_device()
606 				       &adev->power.states[state].resources,  in acpi_power_add_remove_device()
706  * 1. Power on the power resources required for the wakeup device
725 	err = acpi_power_on_list(&dev->wakeup.resources);  in acpi_enable_wakeup_device_power()
727 		dev_err(&dev->dev, "Cannot turn on wakeup power resources\n");  in acpi_enable_wakeup_device_power()
738 		acpi_power_off_list(&dev->wakeup.resources);  in acpi_enable_wakeup_device_power()
754  * 2. Shutdown down the power resources
781 	 * All of the power resources in the list need to be turned off even if  in acpi_disable_wakeup_device_power()
784 	list_for_each_entry(entry, &dev->wakeup.resources, node) {  in acpi_disable_wakeup_device_power()
792 		dev_err(&dev->dev, "Cannot turn off wakeup power resources\n");  in acpi_disable_wakeup_device_power()
814 	 * We know a device's inferred power state when all the resources  in acpi_power_get_inferred_state()
818 		struct list_head *list = &device->power.states[i].resources;  in acpi_power_get_inferred_state()
843 	return acpi_power_on_list(&device->power.states[state].resources);  in acpi_power_on_resources()
861 	 * First we reference all power resources required in the target list  in acpi_power_transition()
863 	 * we dereference all power resources used in the current list.  in acpi_power_transition()
867 			&device->power.states[state].resources);  in acpi_power_transition()
871 			&device->power.states[device->power.state].resources);  in acpi_power_transition()
1026  * acpi_turn_off_unused_power_resources - Turn off power resources not in use.