linux-kernel - Re: [PATCH 3/3 v2] drm/i915: hot plug/unplug notification to HDMI audio driver

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Date:	Tue, 22 Nov 2011 10:25:14 -0800
From:	Keith Packard <keithp@...thp.com>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Takashi Iwai <tiwai@...e.de>,
	"Wang\, Zhenyu Z" <zhenyu.z.wang@...el.com>,
	"dri-devel\@lists.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"intel-gfx\@lists.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3 v2] drm/i915: hot plug/unplug notification to HDMI audio driver

On Tue, 22 Nov 2011 15:40:55 +0800, Wu Fengguang <fengguang.wu@...el.com> wrote:

> So the v3 patch will behave equally well on KMS console, gnome desktop
> and bare X. Shall we just use it, or go back and use the original
> ->hot_remove patch?

I'm not sure why we need any change to the core DRM code. The HDMI and
DP drivers will be told when to turn the monitors on and off, and that's
the appropriate time to control whether audio is routed to them. Hotplug
is considered simply a notification to user space that something has
changed -- user space is in charge of configuring which outputs are in
use.

-- 
keith.packard@...el.com

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