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    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 <rjw@sisk.pl>
    >
    > 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 <rjw@sisk.pl>
    > ---
    > 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 <gregkh@suse.de>

    thanks,

    greg k-h


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