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Gmane
From: Michel =?ISO-8859-1?Q?D=E4nzer?= <michel <at> daenzer.net>
Subject: Re: [drm-next 01/14] drm/radeon/kms: add wait_for_vblank asic callback
Newsgroups: gmane.comp.video.dri.devel
Date: Friday 24th February 2012 09:17:32 UTC (over 5 years ago)
On Don, 2012-02-23 at 17:53 -0500, [email protected] wrote: 
> From: Alex Deucher 
> 
> Required for future functionality.

These callbacks may take tens of milliseconds to complete, that's a lot
of spinning. :) Depending on what they'll be used for, it might be
better to wait for vertical blank interrupts, or use sleeps and
VBLANK_SAVE / VBLANK_OCCURRED bits.


-- 
Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer
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CD: 3ms