cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table
authorSudeep Holla <Sudeep.Holla@arm.com>
Tue, 3 May 2016 14:05:05 +0000 (15:05 +0100)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 4 May 2016 23:40:04 +0000 (01:40 +0200)
commitd9975b0b079c2708d39c01dad882c91a7a5a348f
tree0d3db0d40e747d5d74aff10e3ac90c3a33dc3a20
parent28ed05732a8fdd9cd17c0c46fc407c737f45aa5b
cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table

Currently when performing random CPU hot-plugs and suspend-to-ram(S2R)
on systems using arm_big_little cpufreq driver, we get warnings similar
to something like below:

cpu cpu1: _opp_add: duplicate OPPs detected. Existing: freq: 600000000,
volt: 800000, enabled: 1. New: freq: 600000000, volt: 800000, enabled: 1

This is mainly because the OPPs for the shared cpus are not set. We can
just use dev_pm_opp_of_cpumask_add_table in case the OPPs are obtained
from DT(arm_big_little_dt.c) or use dev_pm_opp_set_sharing_cpus if the
OPPs are obtained by other means like firmware(e.g. scpi-cpufreq.c)

Also now that the generic dev_pm_opp{,_of}_cpumask_remove_table can
handle removal of opp table and entries for all associated CPUs, we can
re-use dev_pm_opp{,_of}_cpumask_remove_table as free_opp_table in
cpufreq_arm_bL_ops.

This patch makes necessary changes to reuse the generic OPP functions for
{init,free}_opp_table and thereby eliminating the warnings.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/cpufreq/arm_big_little.c
drivers/cpufreq/arm_big_little.h
drivers/cpufreq/arm_big_little_dt.c
drivers/cpufreq/scpi-cpufreq.c
drivers/cpufreq/vexpress-spc-cpufreq.c