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Kconfig: move power management Kconfig into subsys/power

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Consolidate all PM related Kconfigs in one place.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit is contained in:
Anas Nashif 2020-08-22 12:58:49 -04:00 • committed by Carles Cufí
commit 3b75a08e3f
4 changed files with 60 additions and 56 deletions
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2
kernel/Kconfig
View file

@ -794,6 +794,4 @@ config TICKLESS_KERNEL
This option enables a fully event driven kernel. Periodic system
clock interrupt generation would be stopped at all times.
source "kernel/Kconfig.power_mgmt"
endmenu

54
kernel/Kconfig.power_mgmt
View file

@ -1,54 +0,0 @@
# Copyright (c) 2014-2015 Wind River Systems, Inc.
# Copyright (c) 2016 Intel Corporation
# SPDX-License-Identifier: Apache-2.0
menuconfig SYS_POWER_MANAGEMENT
bool "System Power management"
select TICKLESS_IDLE
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 SYS_POWER_MANAGEMENT
config SYS_POWER_SLEEP_STATES
bool "Low Power states"
depends on HAS_SYS_POWER_STATE_SLEEP_1 || \
HAS_SYS_POWER_STATE_SLEEP_2 || \
HAS_SYS_POWER_STATE_SLEEP_3
help
This option enables the kernel to interface with a power manager
application. This permits the system to enter a custom CPU low power
state when the kernel becomes idle. The low power state could be any of
the CPU low power states supported by the processor. Generally the one
saving most power.
config SYS_POWER_DEEP_SLEEP_STATES
bool "Deep Sleep states"
depends on HAS_SYS_POWER_STATE_DEEP_SLEEP_1 || \
HAS_SYS_POWER_STATE_DEEP_SLEEP_2 || \
HAS_SYS_POWER_STATE_DEEP_SLEEP_3
help
This option enables the kernel to interface with a power manager
application. This permits the system to enter a Deep sleep state
supported by the SOC where the system clock is turned off while RAM is
retained. This state would be entered when the kernel becomes idle for
extended periods and would have a high wake latency. Resume would be
from the reset vector same as cold boot. The interface allows
restoration of states that were saved at the time of suspend.
source "subsys/power/Kconfig"
endif # SYS_POWER_MANAGEMENT
config DEVICE_POWER_MANAGEMENT
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.

2
subsys/Kconfig
View file

@ -23,6 +23,8 @@ source "subsys/mgmt/Kconfig"
source "subsys/net/Kconfig"
source "subsys/power/Kconfig"
source "subsys/shell/Kconfig"
source "subsys/usb/Kconfig"

58
subsys/power/Kconfig
View file

@ -1,5 +1,46 @@
# Copyright (c) 2014-2015 Wind River Systems, Inc.
# Copyright (c) 2016 Intel Corporation
# SPDX-License-Identifier: Apache-2.0
menu "Power Management"
menuconfig SYS_POWER_MANAGEMENT
bool "System Power management"
select TICKLESS_IDLE
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 SYS_POWER_MANAGEMENT
config SYS_POWER_SLEEP_STATES
bool "Low Power states"
depends on HAS_SYS_POWER_STATE_SLEEP_1 || \
HAS_SYS_POWER_STATE_SLEEP_2 || \
HAS_SYS_POWER_STATE_SLEEP_3
help
This option enables the kernel to interface with a power manager
application. This permits the system to enter a custom CPU low power
state when the kernel becomes idle. The low power state could be any of
the CPU low power states supported by the processor. Generally the one
saving most power.
config SYS_POWER_DEEP_SLEEP_STATES
bool "Deep Sleep states"
depends on HAS_SYS_POWER_STATE_DEEP_SLEEP_1 || \
HAS_SYS_POWER_STATE_DEEP_SLEEP_2 || \
HAS_SYS_POWER_STATE_DEEP_SLEEP_3
help
This option enables the kernel to interface with a power manager
application. This permits the system to enter a Deep sleep state
supported by the SOC where the system clock is turned off while RAM is
retained. This state would be entered when the kernel becomes idle for
extended periods and would have a high wake latency. Resume would be
from the reset vector same as cold boot. The interface allows
restoration of states that were saved at the time of suspend.
config SYS_PM_STATE_LOCK
bool "Enable Power State locking capability"
help
@ -36,3 +77,20 @@ source "subsys/power/policy/Kconfig"
module = SYS_PM
module-str = System Power Management
source "subsys/logging/Kconfig.template.log_config"
endif # SYS_POWER_MANAGEMENT
config DEVICE_POWER_MANAGEMENT
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.
endmenu