linux-kernel - [PATCH 0/5] OPP: Replace custom set_opp() with config

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <cover.1653991004.git.viresh.kumar@linaro.org>
Date:   Tue, 31 May 2022 15:39:59 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Keerthy <j-keerthy@...com>, Dave Gerlach <d-gerlach@...com>,
        Nishanth Menon <nm@...com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Viresh Kumar <vireshk@...nel.org>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/5] OPP: Replace custom set_opp() with config_regulators()

Hi,

This series is in continuation to OPP cleanups [1] posted earlier and is rebased over them.

Currently the custom set_opp() helper, which is implemented only for omap, is responsible to set
both clock and regulators for the device and may end up doing tricky stuff behind the scene. This
makes the OPP core contain special code to support it.

This patch series tries to streamline the code path in _set_opp() in the OPP core and minimize the
platform specific code within it. The platforms provide a config_regulators() callback now, from
which they should only program the regulators in their preferred sequence. Rest of the code sequence
to program clk, bw, required-opps, etc is common across all device and platform types and is present
in the OPP core.

Keerthy/Dave: I couldn't test it on omap, can any of you do that please ? It builds just fine
though. Also maybe you can simplify the OPP driver to drop all restoration logic on failures, as the
OPP core doesn't do any of it as well. I can add a patch for that if you guys are fine with it.

This is pushed here along with other dependencies:

git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git opp/config-regulators

Thanks.

--
Viresh

[1] https://lore.kernel.org/lkml/cover.1653564321.git.viresh.kumar@linaro.org/

Viresh Kumar (5):
  OPP: Add support for config_regulators() helper
  OPP: Make _generic_set_opp_regulator() a config_regulators() interface
  OPP: Add dev_pm_opp_get_supplies()
  OPP: ti: Migrate to config_regulators()
  OPP: Remove custom OPP helper support

 drivers/opp/core.c          | 204 +++++++++++++-----------------------
 drivers/opp/opp.h           |   9 +-
 drivers/opp/ti-opp-supply.c |  74 ++++++-------
 include/linux/pm_opp.h      |  47 +++------
 4 files changed, 118 insertions(+), 216 deletions(-)

-- 
2.31.1.272.g89b43f80a514