intel-gfx.lists.freedesktop.org archive mirror
 help / color / mirror / Atom feed
From: Keith Packard <keithp@keithp.com>
To: Jesse Barnes <jbarnes@virtuousgeek.org>, intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 4/8] drm/i915/dp: try to read receiver capabilities 3 times when detecting
Date: Fri, 01 Jul 2011 16:45:48 -0700	[thread overview]
Message-ID: <yun4o35ftub.fsf@aiko.keithp.com> (raw)
In-Reply-To: <1309558978-4704-5-git-send-email-jbarnes@virtuousgeek.org>


[-- Attachment #1.1: Type: text/plain, Size: 523 bytes --]

On Fri,  1 Jul 2011 15:22:54 -0700, Jesse Barnes <jbarnes@virtuousgeek.org> wrote:
> If ->detect is called too soon after a hot plug event, the sink may not
> be ready yet.  So try up to 3 times with 1ms sleeps in between tries to
> get the data (spec dictates that receivers must be ready to respond within
> 1ms and that sources should try 3 times).

See previous patch comment -- the dpcd read should be stuffed into a
separate function and shared between the four current users.

-- 
keith.packard@intel.com

[-- Attachment #1.2: Type: application/pgp-signature, Size: 189 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

  reply	other threads:[~2011-07-01 23:45 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-01 22:22 [RFC] misc DP fixes/changes Jesse Barnes
2011-07-01 22:22 ` [PATCH 1/8] drm/i915/dp: retry link status read 3 times on failure Jesse Barnes
2011-07-01 23:41   ` Keith Packard
2011-07-01 23:47     ` Jesse Barnes
2011-07-06  4:27   ` Eric Anholt
2011-07-06 16:09     ` Jesse Barnes
2011-07-01 22:22 ` [PATCH 2/8] drm/i915/dp: use DP DPCD defines when looking at DPCD values Jesse Barnes
2011-07-01 23:43   ` Keith Packard
2011-07-01 22:22 ` [PATCH 3/8] drm/i915/dp: read more receiver capability bits on hotplug Jesse Barnes
2011-07-01 23:45   ` Keith Packard
2011-07-01 22:22 ` [PATCH 4/8] drm/i915/dp: try to read receiver capabilities 3 times when detecting Jesse Barnes
2011-07-01 23:45   ` Keith Packard [this message]
2011-07-01 22:22 ` [PATCH 5/8] drm/i915/dp: set DP DPMS mode to "on" in ->commit Jesse Barnes
2011-07-01 23:46   ` Keith Packard
2011-07-01 22:22 ` [PATCH 6/8] drm/i915/dp: clear DP encoder CRTC if the receiver disappears Jesse Barnes
2011-07-01 23:48   ` Keith Packard
2011-07-01 23:59     ` Jesse Barnes
2011-07-02  0:31       ` Keith Packard
2011-07-01 22:22 ` [PATCH 7/8] drm/i915/dp: rename dpms_mode to receiver_configured Jesse Barnes
2011-07-01 23:50   ` Keith Packard
2011-07-01 22:22 ` [PATCH 8/8] drm/i915/dp: clear receiver_configured when link training fails Jesse Barnes
2011-07-01 23:51   ` Keith Packard
2011-07-01 23:39 ` [RFC] misc DP fixes/changes Keith Packard

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=yun4o35ftub.fsf@aiko.keithp.com \
    --to=keithp@keithp.com \
    --cc=intel-gfx@lists.freedesktop.org \
    --cc=jbarnes@virtuousgeek.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).