[PATCH v2 0/2] powernv/cpuidle Device-tree parsing cleanup

From: Akshay Adiga
Date: Mon Jul 02 2018 - 10:24:01 EST

Device-tree parsed multiple time in powernv cpuidle and powernv
hotplug code.

First to identify supported flags. Second time, to identify deepest_state
and first deep state. Third time, during cpuidle init to find the available
idle states. Any change in device-tree format will lead to make changes in
these 3 places. Errors in device-tree can be handled in a better manner.

This series adds code to parse device tree once and save in global structure.

Changes from v1 :
- folded first 2 patches into 1
- rename pm_ctrl_reg_* as psscr_*
- added comment stating removal of pmicr parsing code
- removed parsing code for pmicr
- add member valid in pnv_idle_states_t to indicate if the psscr-mask/val
are valid combination,
- Change function description of pnv_parse_cpuidle_dt
- Added error handling code.

Akshay Adiga (2):
powernv/cpuidle: Parse dt idle properties into global structure
powernv/cpuidle: Use parsed device tree values for cpuidle_init

arch/powerpc/include/asm/cpuidle.h | 13 ++
arch/powerpc/platforms/powernv/idle.c | 216 ++++++++++++++++----------
drivers/cpuidle/cpuidle-powernv.c | 156 ++++---------------
3 files changed, 178 insertions(+), 207 deletions(-)