linux-pm.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Viresh Kumar <viresh.kumar@linaro.org>
To: Rafael Wysocki <rjw@rjwysocki.net>, edubezval@gmail.com
Cc: linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org,
	l.majewski@samsung.com, Viresh Kumar <viresh.kumar@linaro.org>
Subject: [PATCH V2 0/4] cpufreq: Register cooling device after policy is ready
Date: Thu, 27 Nov 2014 06:07:48 +0530	[thread overview]
Message-ID: <cover.1417048449.git.viresh.kumar@linaro.org> (raw)

Hi Rafael/Eduardo,

Currently there is no callback for cpufreq drivers which is called once the
policy is ready to be used. There are some requirements where such a callback is
required.

One of them is registering a cooling device with the help of
of_cpufreq_cooling_register(). This routine tries to get 'struct cpufreq_policy'
for CPUs which isn't yet initialed at the time ->init() is called and so we face
issues while registering the cooling device.

Because we can't register cooling device from ->init(), we need a callback that
is called after the policy is ready to be used and hence ->ready() callback.

The first patch fixes few formatting issues, so that the third patch doesn't
throw any checkpatch warnings. Second one fixes a potential bug in cpufreq-dt
driver. Third one introduces ->ready() callback which will be used in the
fourth patch.

V1->V2:
- s/usable/ready
- dropped last three patches that broke thermal somehow.

Viresh Kumar (4):
  cpufreq: Fix formatting issues in 'struct cpufreq_driver'
  cpufreq-dt: pass 'policy->related_cpus' to
    of_cpufreq_cooling_register()
  cpufreq: Introduce ->ready() callback for cpufreq drivers
  cpufreq-dt: register cooling device from ->ready() callback

 drivers/cpufreq/cpufreq-dt.c | 51 +++++++++++++++++++++++++----------------
 drivers/cpufreq/cpufreq.c    |  5 ++++
 include/linux/cpufreq.h      | 54 ++++++++++++++++++++++++--------------------
 3 files changed, 66 insertions(+), 44 deletions(-)

-- 
2.0.3.693.g996b0fd


             reply	other threads:[~2014-11-27  0:38 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-27  0:37 Viresh Kumar [this message]
2014-11-27  0:37 ` [PATCH V2 1/4] cpufreq: Fix formatting issues in 'struct cpufreq_driver' Viresh Kumar
2014-11-27  0:37 ` [PATCH V2 2/4] cpufreq-dt: pass 'policy->related_cpus' to of_cpufreq_cooling_register() Viresh Kumar
2014-11-27  0:37 ` [PATCH V2 3/4] cpufreq: Introduce ->ready() callback for cpufreq drivers Viresh Kumar
2014-11-27 11:00   ` Lukasz Majewski
2014-11-27  0:37 ` [PATCH V2 4/4] cpufreq-dt: register cooling device from ->ready() callback Viresh Kumar
2014-11-27 11:08   ` Lukasz Majewski

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=cover.1417048449.git.viresh.kumar@linaro.org \
    --to=viresh.kumar@linaro.org \
    --cc=edubezval@gmail.com \
    --cc=l.majewski@samsung.com \
    --cc=linaro-kernel@lists.linaro.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=rjw@rjwysocki.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).