[SOLVED] CONFIG_PM and CONFIG_PM_SLEEP, which should be used?

bunhaku · 12-28-2017, 03:50 AM

Hi!
As background of my question, I will implement suspend/resume function for one of my device. I am new to this area, so I refered some other drivers.
But I am confused with the two macros:
CONFIG_PM and CONFIG_PM_SLEEP.

some drivers used the first while others use the latter, can someone explain me what's the difference? or where can I find any document?

thanks.

smallpond · 12-28-2017, 05:25 AM

Documentation for CONFIG options is in the Kconfig file in the source directory.

https://elixir.free-electrons.com/li.../power/Kconfig

bunhaku · 01-01-2018, 08:19 PM

Hi smallpond!
thanks your answer!
Actually I used an old version of linux kernel, which doesn't explain too much about the two configs.
your answer hints me maybe I can check latest kernels.
thanks.