This commit simplifies OS <-> Application interface controlling power
management. In the previous approach application-based PM required
overriding sys_suspend() and sys_resume() functions. As these functions
actually implemented power state change, in such case application
basically had to provide own implementation of all PM-related stuff,
which was not portable and hard to maintain.
This commit changes this scheme: The sys_suspend() and sys_resume()
are now system functions while the application could either use
built-in power management policies or provide its own. All details
of power mode switching are now handled by the OS.
Also, this commit cleans up the Kconfig options related to system-level
power management grouping them under common CONFIG_SYS_PM_ prefix.
Signed-off-by: Piotr Zięcik <piotr.ziecik@nordicsemi.no>
This commit updates the power management code for nRF52 SoC
series after recent changes in Zephyr power management subsystem.
Changes:
- Removed LPS modes, as they are not supported by HW.
(previous implemntation used CONSTLAT and LOWPWR settings
in NRF_POWER to implement low power modes, however these
knobs should be used only when application needs ultra low
CPU wake-up time).
- Reworked code in order to allow adding custom power levels
on the application level and provide better integration
with power management subsystem.
Signed-off-by: Piotr Zięcik <piotr.ziecik@nordicsemi.no>
Move the SoC outside of the architecture tree and put them at the same
level as boards and architectures allowing both SoCs and boards to be
maintained outside the tree.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Piotr Zięcik