linux-kernel - [PATCH v2 1/2] ALSA: hda/cirrus: Set Initial DMIC volume for Bullseye to -26 dB

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Date:   Mon, 26 Apr 2021 17:37:48 +0100
From:   Vitaly Rodionov <vitalyr@...nsource.cirrus.com>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>, <patches@...nsource.cirrus.com>,
        <linux-kernel@...r.kernel.org>,
        Stefan Binding <sbinding@...nsource.cirrus.com>,
        You-Sheng Yang <vicamo.yang@...onical.com>
Subject: [PATCH v2 1/2] ALSA: hda/cirrus: Set Initial DMIC volume for Bullseye to -26 dB

From: Stefan Binding <sbinding@...nsource.cirrus.com>

After booting for first time on Bullseye, the DMIC is currently muted.
Instead, the DMIC volume should be set to a valid initial value.

Tested on DELL Inspiron-3505, DELL Inspiron-3501, DELL Inspiron-3500

Signed-off-by: Stefan Binding <sbinding@...nsource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@...nsource.cirrus.com>
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1923557
Reported-and-tested-by: You-Sheng Yang <vicamo.yang@...onical.com>
---
 sound/pci/hda/patch_cirrus.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index 5d57096b3a95..a4f82f147ff3 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -2172,6 +2172,11 @@ static void cs8409_cs42l42_fixups(struct hda_codec *codec,
 			(get_wcaps(codec, CS8409_CS42L42_AMIC_PIN_NID) | AC_WCAP_UNSOL_CAP));
 		break;
 	case HDA_FIXUP_ACT_PROBE:
+
+		/* Set initial volume on Bullseye to -26 dB */
+		if (codec->fixup_id == CS8409_BULLSEYE)
+			snd_hda_codec_amp_init_stereo(codec, CS8409_CS42L42_DMIC_ADC_PIN_NID,
+					HDA_INPUT, 0, 0xff, 0x19);
 		snd_hda_gen_add_kctl(&spec->gen,
 			NULL, &cs8409_cs42l42_hp_volume_mixer);
 		snd_hda_gen_add_kctl(&spec->gen,
-- 
2.25.1