# Copyright (c) 2014-2015 Wind River Systems, Inc.
# Copyright (c) 2016 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

menu "Power Management"

config SYS_POWER_MANAGEMENT
	bool "System Power management"
	select PM
	help
	  This option is deprecated. Please use CONFIG_PM instead.

menuconfig PM
	bool "System Power Management"
	depends on SYS_CLOCK_EXISTS && !HAS_NO_SYS_PM
	help
	  This option enables the board to implement extra power management
	  policies whenever the kernel becomes idle. The kernel informs the
	  power management subsystem of the number of ticks until the next kernel
	  timer is due to expire.

if PM

config PM_DEBUG
	bool "System Power Management debug hooks"
	help
	  Enable System Power Management debugging hooks.

source "subsys/pm/policy/Kconfig"

module = PM
module-str = System Power Management
source "subsys/logging/Kconfig.template.log_config"


endif # PM

config HAS_NO_SYS_PM
	bool
	help
	  This option blocks selection of PM.  It can be selected in SOC
	  targets where system power management is not supported, for example
	  on support core of a multi-core device where SoC power management is
	  the responsibility of a different core.

config PM_DEVICE
	bool "Device power management"
	help
	  This option enables the device power management interface.  The
	  interface consists of hook functions implemented by device drivers
	  that get called by the power manager application when the system
	  is going to suspend state or resuming from suspend state. This allows
	  device drivers to do any necessary power management operations
	  like turning off device clocks and peripherals. The device drivers
	  may also save and restore states in these hook functions.

config DEVICE_POWER_MANAGEMENT
	bool "Device Power Management"
	select PM_DEVICE
	help
	  This option is deprecated, please use CONFIG_PM_DEVICE instead.

config PM_DEVICE_RUNTIME
	bool "Runtime Device Power Management"
	depends on PM_DEVICE
	select POLL
	help
	  Enable Runtime Power Management to save power. With device runtime PM
	  enabled, devices can be suspended or resumed based on the device
	  usage even while the CPU or system is running.
endmenu