| From: |
| Matthias Kaehlcke <mka-AT-chromium.org> |
| To: |
| MyungJoo Ham <myungjoo.ham-AT-samsung.com> |
| Subject: |
| [PATCH 00/11] Add throttler driver for non-thermal throttling |
| Date: |
| Fri, 25 May 2018 13:30:32 -0700 |
| Message-ID: |
| <20180525203043.249193-1-mka@chromium.org> |
| Cc: |
| Kyungmin Park <kyungmin.park-AT-samsung.com>, Chanwoo Choi <cw00.choi-AT-samsung.com>, Arnd Bergmann <arnd-AT-arndb.de>, Greg Kroah-Hartman <gregkh-AT-linuxfoundation.org>, Rob Herring <robh+dt-AT-kernel.org>, Mark Rutland <mark.rutland-AT-arm.com>, linux-pm-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, Brian Norris <briannorris-AT-chromium.org>, Douglas Anderson <dianders-AT-chromium.org>, Matthias Kaehlcke <mka-AT-chromium.org> |
| Archive-link: |
| Article |
This series adds the throttler driver, for non-thermal throttling of
CPUs and devfreq devices. A use case for non-thermal throttling could
be the detection of a high battery discharge voltage, close to the
over-current protection (OCP) limit of the battery.
To support throttling of devfreq devices the series introduces the
concept of a devfreq policy and the DEVFREQ_ADJUST notifier (similar
to CPUFREQ_ADJUST). Further it includes some related devfreq bugfixes
and improvements that change some of the code that is also touched
by the policy changes.
Matthias Kaehlcke (11):
PM / devfreq: Init user limits from OPP limits, not viceversa
PM / devfreq: Fix handling of min/max_freq == 0
PM / devfreq: Remove check for df->max_freq == 0 from governors
PM / devfreq: Remove redundant frequency adjustment from governors
PM / devfreq: governors: Return device frequency limits instead of
user limits
PM / devfreq: Add struct devfreq_policy
PM / devfreg: Add support policy notifiers
PM / devfreq: Make update_devfreq() public
misc: throttler: Add core support for non-thermal throttling
dt-bindings: misc: add bindings for throttler
misc/throttler: Add Chrome OS EC throttler
.../devicetree/bindings/misc/throttler.txt | 41 ++
drivers/devfreq/devfreq.c | 203 ++++++----
drivers/devfreq/governor.h | 3 -
drivers/devfreq/governor_passive.c | 4 +-
drivers/devfreq/governor_performance.c | 5 +-
drivers/devfreq/governor_powersave.c | 2 +-
drivers/devfreq/governor_simpleondemand.c | 13 +-
drivers/devfreq/governor_userspace.c | 16 +-
drivers/misc/Kconfig | 1 +
drivers/misc/Makefile | 1 +
drivers/misc/throttler/Kconfig | 28 ++
drivers/misc/throttler/Makefile | 2 +
drivers/misc/throttler/core.c | 373 ++++++++++++++++++
drivers/misc/throttler/cros_ec_throttler.c | 122 ++++++
include/linux/devfreq.h | 112 +++++-
include/linux/throttler.h | 10 +
16 files changed, 813 insertions(+), 123 deletions(-)
create mode 100644 Documentation/devicetree/bindings/misc/throttler.txt
create mode 100644 drivers/misc/throttler/Kconfig
create mode 100644 drivers/misc/throttler/Makefile
create mode 100644 drivers/misc/throttler/core.c
create mode 100644 drivers/misc/throttler/cros_ec_throttler.c
create mode 100644 include/linux/throttler.h
--
2.17.0.921.gf22659ad46-goog
