05 Nov, 2011

1 commit

• a96d69d1b   PM / OPP: Fix build when CONFIG_PM_OPP is not set ... Browse Code »

  Commit 03ca370fbf7b76d6d002380dbdc2cdc2319f9c80 (PM / OPP: Add
  OPP availability change notifier) does not compile if CONFIG_PM_OPP
  is not set:

  arch/arm/plat-omap/omap-pm-noop.o: In function `opp_get_notifier':
  include/linux/opp.h:103: multiple definition of `opp_get_notifier'
  include/linux/opp.h:103: first defined here

  Also fix incorrect comment.

  Signed-off-by: Tony Lindgren
  Signed-off-by: Rafael J. Wysocki

  Tony Lindgren

  2011-11-05 05:28:13 +0800  

01 Oct, 2011

1 commit

• 03ca370fb   PM / OPP: Add OPP availability change notifier. ... Browse Code »

  The patch enables to register notifier_block for an OPP-device in order
  to get notified for any changes in the availability of OPPs of the
  device. For example, if a new OPP is inserted or enable/disable status
  of an OPP is changed, the notifier is executed.

  This enables the usage of opp_add, opp_enable, and opp_disable to
  directly take effect with any connected entities such as cpufreq or
  devfreq.

  Signed-off-by: MyungJoo Ham
  Signed-off-by: Kyungmin Park
  Reviewed-by: Mike Turquette
  Reviewed-by: Kevin Hilman
  Signed-off-by: Rafael J. Wysocki

  MyungJoo Ham

  2011-10-01 04:35:12 +0800  

16 Jul, 2011

1 commit

• 99f381d35   PM / OPP: Introduce function to free cpufreq table ... Browse Code »

  cpufreq table allocated by opp_init_cpufreq_table is better
  freed by OPP layer itself. This allows future modifications to
  the table handling to be transparent to the users.

  Signed-off-by: Nishanth Menon
  Acked-by: Kevin Hilman
  Signed-off-by: Rafael J. Wysocki

  Nishanth Menon

  2011-07-16 05:58:18 +0800  

17 Oct, 2010

1 commit

• e1f60b292   PM: Introduce library for device-specific OPPs (v7) ... Browse Code »

  SoCs have a standard set of tuples consisting of frequency and
  voltage pairs that the device will support per voltage domain. These
  are called Operating Performance Points or OPPs. The actual
  definitions of OPP varies over silicon versions. For a specific domain,
  we can have a set of {frequency, voltage} pairs. As the kernel boots
  and more information is available, a default set of these are activated
  based on the precise nature of device. Further on operation, based on
  conditions prevailing in the system (such as temperature), some OPP
  availability may be temporarily controlled by the SoC frameworks.

  To implement an OPP, some sort of power management support is necessary
  hence this library depends on CONFIG_PM.

  Contributions include:
  Sanjeev Premi for the initial concept:
  http://patchwork.kernel.org/patch/50998/
  Kevin Hilman for converting original design to device-based.
  Kevin Hilman and Paul Walmsey for cleaning up many of the function
  abstractions, improvements and data structure handling.
  Romit Dasgupta for using enums instead of opp pointers.
  Thara Gopinath, Eduardo Valentin and Vishwanath BS for fixes and
  cleanups.
  Linus Walleij for recommending this layer be made generic for usage
  in other architectures beyond OMAP and ARM.
  Mark Brown, Andrew Morton, Rafael J. Wysocki, Paul E. McKenney for
  valuable improvements.

  Discussions and comments from:
  http://marc.info/?l=linux-omap&m=126033945313269&w=2
  http://marc.info/?l=linux-omap&m=125482970102327&w=2
  http://marc.info/?t=125809247500002&r=1&w=2
  http://marc.info/?l=linux-omap&m=126025973426007&w=2
  http://marc.info/?t=128152609200064&r=1&w=2
  http://marc.info/?t=128468723000002&r=1&w=2
  incorporated.

  v1: http://marc.info/?t=128468723000002&r=1&w=2

  Signed-off-by: Nishanth Menon
  Signed-off-by: Kevin Hilman
  Signed-off-by: Rafael J. Wysocki

  Nishanth Menon

  2010-10-17 07:57:50 +0800