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Commit de9481cb authored by Kailang Yang's avatar Kailang Yang Committed by Takashi Iwai
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ALSA: hda/realtek - Improve HP depop when system change power state on Chromebook 



It is better to change Mic2-Vref to manual mode.
Manual control Mic2-Vref will solve pop noise issue.
It will improve pop noise for power on, power off, S3 and resume.

Signed-off-by: default avatarKailang Yang <kailang@realtek.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 3af5d052

sound/pci/hda/patch_realtek.c

+4 −0
Original line number Diff line number Diff line
@@ -4005,6 +4005,10 @@ static void alc283_fixup_chromebook(struct hda_codec *codec, 
		spec->gen.mixer_nid = 0;

		break;

	case HDA_FIXUP_ACT_INIT:

		/* MIC2-VREF control */

		/* Set to manual mode */

		val = alc_read_coef_idx(codec, 0x06);

		alc_write_coef_idx(codec, 0x06, val & ~0x000c);

		/* Enable Line1 input control by verb */

		val = alc_read_coef_idx(codec, 0x1a);

		alc_write_coef_idx(codec, 0x1a, val | (1 << 4));