From: Wu Fengguang <fengguang.wu@intel.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: "Wang, Zhenyu Z" <zhenyu.z.wang@intel.com>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
"Barnes, Jesse" <jesse.barnes@intel.com>,
Jeremy Bush <contractfrombelow@gmail.com>,
Christopher White <c.white@pulseforce.com>,
"Bossart, Pierre-louis" <pierre-louis.bossart@intel.com>
Subject: Re: [PATCH v5] drm/i915: pass ELD to HDMI/DP audio driver
Date: Thu, 10 Nov 2011 21:51:50 +0800 [thread overview]
Message-ID: <20111110135150.GB17079@localhost> (raw)
In-Reply-To: <s5hy5vo9jte.wl%tiwai@suse.de>
> > > > So maybe the hardware is in some state that is unable to provide the
> > > > real ELD content?
> > > That's my guess as well. I think the hardware may still be doing some
> > > form of data negotiation with the HDMI display device at that stage, and
> > > doesn't have the copy of the EDID+ELD buffer until a tiny bit later.
> > > Possibly?
> >
> > Look at the below dmesg. The ELD seem to available immediately after the DPMS
> > state setting..
>
> Interesting. Does HDMI audio work at all while HDMI DPMS off?
> It clears SDVO_ENABLE bit, so this might turn off both video and
> audio?
We normally see transient blank screen and silence of audio when
switching the video mode.
The spec says that at this short stage the HDMI/DP audio driver should
take NO action like stopping the audio stream -- just let go of it for
the moment.
Thanks,
Fengguang
next prev parent reply other threads:[~2011-11-10 13:51 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-02 8:14 [PATCH v4] drm/i915: pass ELD to HDMI/DP audio driver Wu Fengguang
2011-09-02 8:29 ` Wu Fengguang
2011-09-03 21:15 ` [PATCH v5] " Wu Fengguang
2011-09-04 10:57 ` James Cloos
2011-09-05 1:19 ` Wu Fengguang
2011-09-04 11:11 ` [Intel-gfx] " Paul Menzel
2011-09-05 1:06 ` Wu Fengguang
2011-09-04 12:08 ` Chris Wilson
2011-09-05 1:14 ` Wu Fengguang
2011-09-05 11:04 ` Chris Wilson
2011-09-05 12:31 ` Wu Fengguang
[not found] ` <4E64C41B.5090309@pulseforce.com>
[not found] ` <20110905124730.GB794@localhost>
[not found] ` <4EA82DBD.9020301@pulseforce.com>
2011-10-27 19:57 ` Christopher White
2011-11-09 6:59 ` Wu Fengguang
2011-11-09 9:00 ` Christopher White
2011-11-09 9:30 ` Christopher White
2011-11-09 13:01 ` Wu Fengguang
[not found] ` <4EA9B6EF.9040305@pulseforce.com>
2011-11-01 11:36 ` Wu Fengguang
2011-11-01 17:00 ` Christopher White
2011-11-02 1:45 ` Wu Fengguang
2011-11-02 6:10 ` Sander Jansen
2011-11-02 7:35 ` Paul Menzel
2011-11-02 11:17 ` Sander Jansen
2011-11-02 14:26 ` Sander Jansen
2011-11-02 8:52 ` Wu Fengguang
2011-11-02 17:41 ` Keith Packard
2011-11-04 0:21 ` Tony Olivo
2011-11-05 0:20 ` Christopher White
2011-11-09 13:12 ` Wu Fengguang
2011-11-10 2:25 ` Christopher White
2011-11-10 3:27 ` Wu Fengguang
2011-11-10 4:10 ` Christopher White
2011-11-10 7:06 ` Wu Fengguang
2011-11-10 7:33 ` Wu Fengguang
2011-11-10 7:55 ` Wu Fengguang
2011-11-10 8:50 ` Wu Fengguang
2011-11-10 8:55 ` Christopher White
2011-11-10 11:00 ` Christopher White
2011-11-10 11:22 ` Takashi Iwai
2011-11-10 11:50 ` Christopher White
2011-11-10 11:53 ` Takashi Iwai
2011-11-10 12:39 ` Christopher White
2011-11-10 13:01 ` Takashi Iwai
2011-11-10 12:56 ` Wu Fengguang
2011-11-10 13:01 ` Christopher White
2011-11-10 13:17 ` Wu Fengguang
2011-11-10 13:34 ` Christopher White
2011-11-10 13:47 ` Wu Fengguang
2011-11-10 14:12 ` Wu Fengguang
2011-11-10 13:41 ` Takashi Iwai
2011-11-10 13:51 ` Wu Fengguang [this message]
2011-11-10 13:53 ` Wu Fengguang
2011-11-10 14:28 ` Takashi Iwai
2011-11-11 2:29 ` Wu Fengguang
2011-11-11 7:40 ` Takashi Iwai
2011-11-11 8:22 ` Wu Fengguang
2011-11-11 8:49 ` Takashi Iwai
2011-11-11 9:24 ` Wu Fengguang
2011-11-11 10:17 ` Takashi Iwai
2011-11-11 11:12 ` Wu Fengguang
2011-11-11 11:23 ` Takashi Iwai
2011-11-11 11:32 ` Wu Fengguang
2011-11-12 2:27 ` Wu Fengguang
2011-11-14 9:45 ` Takashi Iwai
2011-11-14 13:25 ` Wu Fengguang
2011-11-15 17:18 ` Purushothaman, Vijay A
2011-11-10 6:59 ` Wu Fengguang
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