From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH v4] drm/i915: pass ELD to HDMI/DP audio
	driver
Date: Fri, 2 Sep 2011 16:29:26 +0800
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To: Keith Packard <keithp@keithp.com>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>, "Wang,
	Zhenyu Z" <zhenyu.z.wang@intel.com>, "intel-gfx@lists.freedesktop..." <intel-gfx@lists.freedesktop.org>, "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>, "Zhao, Yakui" <yakui.zhao@intel.com>, Ben Skeggs <bskeggs@redhat.com>, Jesse Barnes <jbarnes@virtuousgeek.org>, Christopher White <c.white@pulseforce.com>, Jeremy Bush <contractfrombelow@gmail.com>, "Fu,
	Michael" <michael.fu@intel.com>, "Bossart,
	Pierre-louis" <pierre-louis.bossart@intel.com>
List-Id: alsa-devel@alsa-project.org

Keith: this version completes the IvyBridge support :)

Bossart: hotplug is working fine now, with some minor issues:

- on G45, monitor hot removal is not handled at all in
  i915_driver_irq_handler(). I'll leave it as a future TODO.

- on IvyBridge, _repeated_ plug/unplug will trigger

  [ 1183.654859] ALSA hda_eld.c:259 HDMI: Unknown ELD version 0

  which means the ELD_valid flag will be seen by audio driver,
  however it cannot get any valid ELD data. I double checked and
  find everything in the graphics driver is working as expected:
  ironlake_write_eld() is writing the good ELD data to the same
  pipe on hot plug events. So I'll leave it as a possible bug of
  the early stage hardware.

Thanks,
Fengguang