[3.8.y.z extended stable] Patch "ALSA: hda - hdmi: Fix IEC958 ctl indexes for some simple HDMI devices" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    ALSA: hda - hdmi: Fix IEC958 ctl indexes for some simple HDMI devices

to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue

This patch is scheduled to be released in version 3.8.13.16.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 1b41116ba7489df3cce387b16291c500422da346 Mon Sep 17 00:00:00 2001
From: Anssi Hannula <anssi.hannula at iki.fi>
Date: Tue, 10 Dec 2013 22:46:34 +0200
Subject: ALSA: hda - hdmi: Fix IEC958 ctl indexes for some simple HDMI devices

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 at iki.fi>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
[ kamal: backport to 3.8 (context) ]
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 sound/pci/hda/patch_hdmi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 01b98b0..027e4f0 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1800,9 +1800,9 @@ static int simple_playback_build_controls(struct hda_codec *codec)
 	struct hdmi_spec *spec = codec->spec;
 	int err;

-	err = snd_hda_create_spdif_out_ctls(codec,
-					    spec->cvts[0].cvt_nid,
-					    spec->cvts[0].cvt_nid);
+	err = snd_hda_create_dig_out_ctls(codec, spec->cvts[0].cvt_nid,
+					  spec->cvts[0].cvt_nid,
+					  HDA_PCM_TYPE_HDMI);
 	if (err < 0)
 		return err;
 	return simple_hdmi_build_jack(codec, 0);
--
1.8.3.2