From 2dbf0ea29c1e4dff4ee5f0c59b367168fa2e5a40 Mon Sep 17 00:00:00 2001
From: Clemens Ladisch <clemens@ladisch.de>
Date: Thu, 9 Sep 2010 12:24:35 +0200
Subject: [PATCH] ALSA: virtuoso: Xonar DS: add stereo upmixing to center/LFE
 channels

Add the possibility to route a mix of the two channels of stereo data to
the center and LFE outputs.  Due to a WM8766 restriction, all surround
and back channels also get the mixed L/R signal in this case.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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