From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dana Goyette <DGoyette@calpoly.edu>
Subject: Re: [PATCH] drm/radeon/kms: simplify picking power state
Date: Sun, 14 Feb 2010 21:51:20 -0800
Message-ID: <4B78E0D8.9030006@calpoly.edu>
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To: Alex Deucher <alexdeucher@gmail.com>
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On 02/14/2010 07:43 PM, Alex Deucher wrote:
> On Fri, Feb 12, 2010 at 10:38 AM, Dana Goyette<dgoyette@calpoly.edu>  wro=
te:
>    =

>> On 02/11/2010 02:00 PM, Rafa=B3 Mi=B3ecki wrote:
>>      =

>>> W dniu 11 lutego 2010 22:50 u=BFytkownik Rafa=B3 Mi=B3ecki<zajec5@gmail=
.com>
>>>   napisa=B3:
>>>        =

>>>> ---
>>>>   drivers/gpu/drm/radeon/radeon_pm.c |   57
>>>> +++++++++++------------------------
>>>>   1 files changed, 18 insertions(+), 39 deletions(-)
>>>>          =

>>> Dave you can add
>>> Signed-off-by: Rafa=B3 Mi=B3ecki<zajec5@gmail.com>
>>> of course, if you wish. Forgot that.
>>>
>>>        =

>> Hmm, something to watch out for: what about cards that offer more than o=
ne
>> battery state?  Take my RV635 (Mobility HD3650), for example -- my card =
has
>> two battery states with different frequencies.
>>      =

> They are for different things.  The dmesg output doesn't print out the
> full power state info.  Most likely one is for video playback that has
> slightly different performance or bandwidth requirements compared to
> the regular battery state.
>
> Alex
>    =

On that note, how do you define which is the "regular" battery state?  =

Right now, the PM code seems to miss the lowest-speed state, and thus =

doesn't save as much power as it ideally would.

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