linux-kernel - [PATCH V2 0/7] CPUFreq: Initialize CPU's OPP tables from CPU core

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Message-Id: <cover.1400670427.git.viresh.kumar@linaro.org>
Date:	Wed, 21 May 2014 16:39:58 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	rjw@...ysocki.net
Cc:	linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, arvind.chauhan@....com,
	inderpal.s@...sung.com, nm@...com, chander.kashyap@...aro.org,
	pavel@....cz, len.brown@...el.com, sudeep.holla@....com,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Amit Daniel Kachhap <amit.daniel@...sung.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Shawn Guo <shawn.guo@...aro.org>
Subject: [PATCH V2 0/7] CPUFreq: Initialize CPU's OPP tables from CPU core

This is second attempt to initialize CPU's OPPs from CPU core code. First one
was here: https://lkml.org/lkml/2014/5/19/57

All drivers expecting CPU's OPPs from device tree initialize OPP table using
of_init_opp_table() and there is nothing driver specific in that. They all do it
in the same way adding to code redundancy.

It would be better if we can get rid of code redundancy by initializing CPU OPPs
from core code for all CPUs that have a "operating-points" property defined in
their node.

This patchset is all about that.

The idea was initially discussed here: https://lkml.org/lkml/2014/5/17/123

V1->V2:
- Addition of two new patches: 1/2 & 2/2
- Created separate routine of_init_cpu_opp_table() which wouldn't add any
  overhead for the platforms which don't have OPP or OF enabled.
- Added a print for success case as well
- Added Acks from Shawn
- Got rid of extra indentation level by returning early from register_cpu().

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Amit Daniel Kachhap <amit.daniel@...sung.com>
Cc: Kukjin Kim <kgene.kim@...sung.com>
Cc: Shawn Guo <shawn.guo@...aro.org>

Viresh Kumar (7):
  opp: remove -ENOSYS from dummy implementation of of_init_opp_table()
  opp: handle of_node_{get|put}() inside of_init_opp_table()
  driver/core: cpu: initialize opp table
  cpufreq: arm_big_little: don't initialize opp table
  cpufreq: imx6q: don't initialize opp table
  cpufreq: cpufreq-cpu0: don't initialize opp table
  cpufreq: exynos5440: don't initialize opp table

 arch/arm/mach-imx/mach-imx6q.c       | 36 ++++++++----------------------------
 drivers/base/cpu.c                   | 30 ++++++++++++++++++++++++++----
 drivers/base/power/opp.c             |  4 ++++
 drivers/cpufreq/arm_big_little.c     | 12 +++++++-----
 drivers/cpufreq/arm_big_little_dt.c  | 18 ------------------
 drivers/cpufreq/cpufreq-cpu0.c       |  6 ------
 drivers/cpufreq/exynos5440-cpufreq.c |  6 ------
 drivers/cpufreq/imx6q-cpufreq.c      | 20 +-------------------
 include/linux/pm_opp.h               |  2 +-
 9 files changed, 47 insertions(+), 87 deletions(-)

-- 
2.0.0.rc2

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