From 532a7784c376f2332d38c4c1576843c66343713d Mon Sep 17 00:00:00 2001
From: Hui Wang <hui.wang@canonical.com>
Date: Mon, 26 Jun 2017 12:30:32 +0800
Subject: [PATCH] ALSA: hda/realtek - There is no loopback mixer in the ALC234/274/294
Git-commit: 532a7784c376f2332d38c4c1576843c66343713d
Patch-mainline: v4.13-rc1
References: bsc#1052235
We have a Lenovo machine with the codec ALC294 on it, without the
patch, the Node 0x0b is regarded as the loopback mixer, but the Node
0x0b in this codec is "Vendor Defined Widget" instead of the audio
mixer, please see the log below:
Node 0x0b [Vendor Defined Widget] wcaps 0xf00000: Mono
Control: name="Beep Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=4, ofs=0
Control: name="Beep Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=In, idx=4, ofs=0
And I have consulted with Realtek, so far the ALC234/274/294 all don't
have loopback mixer.
Cc: Kailang Yang <kailang@realtek.com>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/pci/hda/patch_realtek.c | 1 +
1 file changed, 1 insertion(+)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6799,6 +6799,7 @@ static int patch_alc269(struct hda_codec
case 0x10ec0274:
case 0x10ec0294:
spec->codec_variant = ALC269_TYPE_ALC294;
+ spec->gen.mixer_nid = 0; /* ALC2x4 does not have any loopback mixer path */
alc_update_coef_idx(codec, 0x6b, 0x0018, (1<<4) | (1<<3)); /* UAJ MIC Vref control by verb */
break;
case 0x10ec0700: