From: Adam Jackson <ajax@redhat.com>
To: Keith Packard <keithp@keithp.com>
Cc: "drivers, Intel" <Intel-gfx@lists.freedesktop.org>
Subject: Re: Flicker-free boot in DRM
Date: Mon, 31 Oct 2011 14:59:13 -0400 [thread overview]
Message-ID: <4EAEF001.7050406@redhat.com> (raw)
In-Reply-To: <yun1utt2e8z.fsf@aiko.keithp.com>
On 10/31/11 2:43 PM, Keith Packard wrote:
> On Mon, 31 Oct 2011 12:56:58 -0400, Adam Jackson<ajax@redhat.com> wrote:
>
>> Yeah, it won't be precise. That's why there's PLL search code at all,
>> and why it has a fuzz factor for finding "good enough".
>
> Right, so we'll need a similar fuzz factor when deciding whether we
> actually need to flip modes or not. Makes me concerned that we'll be
> effectively ignoring minor changes in the mode, which will make tweaking
> dot clocks impossible.
I don't see why we'd need to use the same equality operator everywhere.
The case of "is userspace asking for a fine-tune" seems clearly
distinguishable from "are the current panel timings close enough to what
EDID asked for".
- ajax
next prev parent reply other threads:[~2011-10-31 18:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-29 7:05 Flicker-free boot in DRM Keith Packard
2011-10-29 8:12 ` Chris Wilson
2011-10-29 21:54 ` Keith Packard
2011-10-30 4:24 ` Keith Packard
2011-10-31 16:56 ` Adam Jackson
2011-10-31 18:43 ` Keith Packard
2011-10-31 18:59 ` Adam Jackson [this message]
2011-10-31 16:57 ` Jesse Barnes
2011-10-31 18:45 ` Keith Packard
2011-10-31 17:00 ` Adam Jackson
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