linux-kernel - [PATCH 3.11 183/208] ALSA: hda - hdmi: Fix IEC958 ctl indexes for some simple HDMI devices

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Date:	Thu, 19 Dec 2013 11:54:41 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Anssi Hannula <anssi.hannula@....fi>, Takashi Iwai <tiwai@...e.de>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.11 183/208] ALSA: hda - hdmi: Fix IEC958 ctl indexes for some simple HDMI devices

3.11.10.2 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Anssi Hannula <anssi.hannula@....fi>

commit c9a6338aecdb92f9d015ecc26d203e54250bebbb upstream.

In case a single HDA card has both HDMI and S/PDIF outputs, the S/PDIF
outputs will have their IEC958 controls created starting from index 16
and the HDMI controls will be created starting from index 0.

However, HDMI simple_playback_build_controls() as used by old VIA and
NVIDIA codecs incorrectly requests the IEC958 controls to be created
with an S/PDIF type instead of HDMI.
In case the card has other codecs that have HDMI outputs, the controls
will be created with wrong index=16, causing them to e.g. be unreachable
by the ALSA "hdmi" alias.

Fix that by making simple_playback_build_controls() request controls
with HDMI indexes.

Not many cards have an affected configuration, but e.g. ASUS M3N78-VM
contains an integrated NVIDIA HDA "card" with:
- a VIA codec that has, among others, an S/PDIF pin incorrectly
  labelled as an HDMI pin, and
- an NVIDIA MCP7x HDMI codec.

Reported-by: MysterX on #openelec
Tested-by: MysterX on #openelec
Signed-off-by: Anssi Hannula <anssi.hannula@....fi>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 sound/pci/hda/patch_hdmi.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 4fb8bc3..0b36c63 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -2087,8 +2087,9 @@ static int simple_playback_build_controls(struct hda_codec *codec)
 	int err;
 
 	per_cvt = get_cvt(spec, 0);
-	err = snd_hda_create_spdif_out_ctls(codec, per_cvt->cvt_nid,
-					    per_cvt->cvt_nid);
+	err = snd_hda_create_dig_out_ctls(codec, per_cvt->cvt_nid,
+					  per_cvt->cvt_nid,
+					  HDA_PCM_TYPE_HDMI);
 	if (err < 0)
 		return err;
 	return simple_hdmi_build_jack(codec, 0);
-- 
1.8.3.2

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