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ALSA: hda/realtek: Limit Legion AW88399 playback to stereo

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The Legion AW88399 speaker routing sends a stereo FL/FR stream
to both speaker pairs. A four-channel stream leaves the front
pair silent, so advertising four channels exposes an unusable
playback mode.

Limit the analogue PCM and the multi-output runtime constraint
to two channels for the affected Legion codec SSIDs. This
exposes the usable stereo configuration and rejects
four-channel playback.

Signed-off-by: Aaron Ma <mapengyu@gmail.com>
Reviewed-by: Marco Giunta <marco_giunta@outlook.it>
Tested-by: Marco Giunta <marco_giunta@outlook.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260804185325.22861-2-mapengyu@gmail.com
This commit is contained in:
Aaron Ma
2026-08-05 02:53:25 +08:00
committed by Takashi Iwai
parent 2b38a27131
commit 5801c193b4
1 changed files with 4 additions and 0 deletions
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4
sound/hda/codecs/realtek/alc269.c
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@@ -3300,6 +3300,10 @@ static void alc287_fixup_legion_16iax10h_aw88399(struct hda_codec *codec,
spec->gen.suppress_auto_mic = 1;
snd_hda_override_conn_list(codec, 0x17, ARRAY_SIZE(conn), conn);
break;
case HDA_FIXUP_ACT_BUILD:
spec->gen.multiout.max_channels = 2;
spec->gen.pcm_rec[0]->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max = 2;
break;
}
}