linux-kernel - [PATCH 4.9 07/32] ALSA: hda/realtek - Dell headphone has noise on unmute for ALC236

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Date:   Thu,  7 Jan 2021 15:16:27 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Kailang Yang <kailang@...ltek.com>,
        Takashi Iwai <tiwai@...e.de>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH 4.9 07/32] ALSA: hda/realtek - Dell headphone has noise on unmute for ALC236

From: Kailang Yang <kailang@...ltek.com>

commit e1e8c1fdce8b00fce08784d9d738c60ebf598ebc upstream

headphone have noise even the volume is very small.
Let it fill up pcbeep hidden register to default value.
The issue was gone.

Fixes: 4344aec84bd8 ("ALSA: hda/realtek - New codec support for ALC256")
Fixes: 736f20a70608 ("ALSA: hda/realtek - Add support for ALC236/ALC3204")
Signed-off-by: Kailang Yang <kailang@...ltek.com>
Cc: <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/9ae47f23a64d4e41a9c81e263cd8a250@realtek.com
Signed-off-by: Takashi Iwai <tiwai@...e.de>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/pci/hda/patch_realtek.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -330,9 +330,7 @@ static void alc_fill_eapd_coef(struct hd
 	case 0x10ec0225:
 	case 0x10ec0233:
 	case 0x10ec0235:
-	case 0x10ec0236:
 	case 0x10ec0255:
-	case 0x10ec0256:
 	case 0x10ec0257:
 	case 0x10ec0282:
 	case 0x10ec0283:
@@ -343,6 +341,11 @@ static void alc_fill_eapd_coef(struct hd
 	case 0x10ec0299:
 		alc_update_coef_idx(codec, 0x10, 1<<9, 0);
 		break;
+	case 0x10ec0236:
+	case 0x10ec0256:
+		alc_write_coef_idx(codec, 0x36, 0x5757);
+		alc_update_coef_idx(codec, 0x10, 1<<9, 0);
+		break;
 	case 0x10ec0285:
 	case 0x10ec0293:
 		alc_update_coef_idx(codec, 0xa, 1<<13, 0);