[lkml]   [2011]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC][PATCH 1/2] PM / Runtime: Support for generic I/O power domains
On Fri, Apr 29, 2011 at 01:54:55AM +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <>
> Introcude common headers, helper functions and callbacks allowing
> platforms to use simple generic power domains for runtime power
> management.
> Introduce struct generic_power_domain to be used for representing
> power domains that each contain a number of devices and may be
> master domains or subdomains with respect to other power domains.
> Among other things, this structure includes callbacks to be
> provided by platforms for performing specific tasks related to
> power management (i.e. ->stop_device() may disable a device's
> clocks, while ->start_device() may enable them, ->power_on() is
> supposed to remove power from the entire power domain
> and ->power_off() is supposed to restore it).
> Introduce functions that can be used as power domain runtime PM
> callbacks, pm_genpd_runtime_suspend() and pm_genpd_runtime_resume(),
> as well as helper functions for the initialization of a power
> domain represented by a struct generic_power_domain object,
> adding a device to or removing a device from it and adding or
> removing subdomains.
> Signed-off-by: Rafael J. Wysocki <>
> ---
> drivers/base/power/Makefile | 2
> drivers/base/power/domain.c | 416 ++++++++++++++++++++++++++++++++++++++++++++
> include/linux/pm.h | 3
> include/linux/pm_domain.h | 82 ++++++++
> 4 files changed, 501 insertions(+), 2 deletions(-)

If this solves the power domain issue, and no one has any problems with
getting to work on their platforms, it looks great to me.

Very nice job:
Acked-by: Greg Kroah-Hartman <>


greg k-h

 \ /
  Last update: 2011-04-29 22:57    [W:0.272 / U:15.420 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site