From: Kevin Hilman <khilman@ti.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Linux-pm mailing list" <linux-pm@lists.linux-foundation.org>,
Greg KH <greg@kroah.com>, LKML <linux-kernel@vger.kernel.org>,
Magnus Damm <magnus.damm@gmail.com>,
Alan Stern <stern@rowland.harvard.edu>,
Grant Likely <grant.likely@secretlab.ca>,
Len Brown <lenb@kernel.org>
Subject: Re: [RFC][PATCH] Power domains for platform bus type
Date: Mon, 31 Jan 2011 16:17:02 -0800 [thread overview]
Message-ID: <878vy01udd.fsf@ti.com> (raw)
In-Reply-To: <201101300107.19389.rjw@sisk.pl> (Rafael J. Wysocki's message of "Sun, 30 Jan 2011 01:07:19 +0100")
"Rafael J. Wysocki" <rjw@sisk.pl> writes:
> Hi,
>
> This is something we discussed during the last Linux Plumbers Conference.
>
> The problem appears to be that the same device may be used in different
> systems in different configurations such that actions necessary for the
> device's power management can vary from one system to another. In those
> cases the drivers' power management callbacks are generally not sufficient,
> because they can't take the configuration of the whole system into account.
>
> I think this issue may be addressed by adding objects that will represent
> power domains and will provide power management callbacks to be executed
> in addition to the device driver's PM callbacks, which is done by the patch
> below.
>
> Please have a look at it and tell me what you think.
>
FYI... I just tested this patch on OMAP by converting our existing use
of platform_bus_set_ops() to use this approach by adding a powerdomain
to each omap_device.
Note we're currently only overriding the runtime_[suspend|resume]
methods, so those are the only paths I've tested.
Kevin
next prev parent reply other threads:[~2011-02-01 0:17 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-30 0:07 [RFC][PATCH] Power domains for platform bus type Rafael J. Wysocki
2011-01-30 16:03 ` Alan Stern
2011-01-30 22:39 ` Rafael J. Wysocki
2011-01-31 15:01 ` Alan Stern
2011-01-31 15:01 ` Alan Stern
2011-01-31 18:09 ` Rafael J. Wysocki
2011-01-31 18:09 ` Rafael J. Wysocki
2011-01-31 19:45 ` Alan Stern
2011-01-31 19:45 ` Alan Stern
2011-01-31 22:16 ` Rafael J. Wysocki
2011-01-31 22:26 ` Grant Likely
2011-01-31 22:44 ` Kevin Hilman
2011-01-31 23:01 ` Rafael J. Wysocki
2011-01-31 23:01 ` Rafael J. Wysocki
2011-01-31 22:44 ` Kevin Hilman
2011-01-31 22:26 ` Grant Likely
2011-01-31 22:16 ` Rafael J. Wysocki
2011-01-30 22:39 ` Rafael J. Wysocki
2011-01-30 16:03 ` Alan Stern
2011-01-31 12:05 ` Mark Brown
2011-01-31 12:05 ` Mark Brown
2011-01-31 22:59 ` Grant Likely
2011-01-31 22:59 ` Grant Likely
2011-01-31 23:10 ` Rafael J. Wysocki
2011-01-31 23:43 ` Kevin Hilman
2011-02-01 3:18 ` Grant Likely
2011-02-01 10:58 ` Rafael J. Wysocki
2011-02-01 16:48 ` Kevin Hilman
2011-02-01 16:48 ` Kevin Hilman
2011-02-01 18:39 ` Rafael J. Wysocki
2011-02-01 18:39 ` Rafael J. Wysocki
2011-02-12 22:12 ` [RFC][PATCH 0/2] PM: Core power management modifications Rafael J. Wysocki
2011-02-12 22:12 ` Rafael J. Wysocki
2011-02-12 22:13 ` [RFC][PATCH 1/2] PM: Add support for device power domains Rafael J. Wysocki
2011-02-12 22:13 ` Rafael J. Wysocki
2011-02-14 16:12 ` Alan Stern
2011-02-14 16:12 ` Alan Stern
2011-02-14 22:34 ` Rafael J. Wysocki
2011-02-14 22:34 ` Rafael J. Wysocki
2011-02-15 3:01 ` Alan Stern
2011-02-15 3:01 ` Alan Stern
2011-02-15 21:40 ` Rafael J. Wysocki
2011-02-15 21:40 ` Rafael J. Wysocki
2011-02-15 7:28 ` Magnus Damm
2011-02-15 7:28 ` Magnus Damm
2011-02-15 23:12 ` Rafael J. Wysocki
2011-02-15 23:12 ` Rafael J. Wysocki
2011-02-15 18:23 ` Kevin Hilman
2011-02-15 18:23 ` Kevin Hilman
2011-02-12 22:14 ` [RFC][PATCH 2/2] PM: Make system-wide PM and runtime PM handle subsystems consistently Rafael J. Wysocki
2011-02-12 22:14 ` Rafael J. Wysocki
2011-02-14 16:25 ` Alan Stern
2011-02-14 22:35 ` Rafael J. Wysocki
2011-02-14 22:35 ` Rafael J. Wysocki
2011-02-16 12:24 ` Rafael J. Wysocki
2011-02-16 14:57 ` Alan Stern
2011-02-16 14:57 ` Alan Stern
2011-02-16 21:47 ` Rafael J. Wysocki
2011-02-16 21:47 ` Rafael J. Wysocki
2011-02-16 22:23 ` Alan Stern
2011-02-16 23:45 ` Rafael J. Wysocki
2011-02-17 14:55 ` Alan Stern
2011-02-17 14:55 ` Alan Stern
2011-02-17 17:04 ` Greg KH
2011-02-17 17:04 ` Greg KH
2011-02-17 22:16 ` Rafael J. Wysocki
2011-02-17 22:16 ` Rafael J. Wysocki
2011-02-17 23:54 ` [PATCH] PM: Make system-wide PM and runtime PM treat " R. J. Wysocki
2011-02-18 19:22 ` Greg KH
2011-02-18 20:14 ` Rafael J. Wysocki
2011-02-18 20:14 ` Rafael J. Wysocki
2011-02-18 19:22 ` Greg KH
2011-02-17 23:54 ` R. J. Wysocki
2011-02-16 23:45 ` [RFC][PATCH 2/2] PM: Make system-wide PM and runtime PM handle " Rafael J. Wysocki
2011-02-16 22:23 ` Alan Stern
2011-02-16 12:24 ` Rafael J. Wysocki
2011-02-14 16:25 ` Alan Stern
2011-02-15 18:10 ` Kevin Hilman
2011-02-15 18:10 ` Kevin Hilman
2011-02-15 19:48 ` Grant Likely
2011-02-15 19:48 ` Grant Likely
2011-02-01 10:58 ` [RFC][PATCH] Power domains for platform bus type Rafael J. Wysocki
2011-02-01 3:18 ` Grant Likely
2011-02-01 3:40 ` Alan Stern
2011-02-01 3:40 ` Alan Stern
2011-01-31 23:43 ` Kevin Hilman
2011-01-31 23:10 ` Rafael J. Wysocki
2011-01-31 23:16 ` Kevin Hilman
2011-01-31 23:16 ` Kevin Hilman
2011-01-31 23:23 ` Grant Likely
2011-01-31 23:23 ` Grant Likely
2011-02-01 0:17 ` Kevin Hilman [this message]
2011-02-01 10:52 ` Rafael J. Wysocki
2011-02-01 10:52 ` Rafael J. Wysocki
2011-02-01 0:17 ` Kevin Hilman
-- strict thread matches above, loose matches on Subject: below --
2011-01-30 0:07 Rafael J. Wysocki
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