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

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Date:   Mon,  2 Jul 2018 19:53:19 +0530
From:   Akshay Adiga <akshay.adiga@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-pm@...r.kernel.org
Cc:     rjw@...ysocki.net, stewart@...ux.vnet.ibm.com,
        benh@...nel.crashing.org, svaidy@...ux.vnet.ibm.com,
        ego@...ux.vnet.ibm.com, npiggin@...il.com, mpe@...erman.id.au,
        Akshay Adiga <akshay.adiga@...ux.vnet.ibm.com>
Subject: [PATCH v2 0/2] powernv/cpuidle Device-tree parsing cleanup

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(-)

-- 
2.18.0.rc2.85.g1fb9df7