Commit fc1156c0 authored Feb 13, 2012 by Takashi Iwai

ALSA: hda - Fix initialization of secondary capture source on VT1705



VT1705 codec has two ADCs where the secondary ADC has no MUX but only
a fixed connection to the mic pin.  This confused the driver and it
tries always overriding the input-source selection by assumption of
the existing MUX for the secondary ADC, resulted in resetting the
input-source at each time PM (including power-saving) occurs.

The fix is simply to check the existence of MUX for secondary ADCs in
the initialization code.

Tested-by: Anisse Astier <anisse@astier.eu>
Cc: <stable@kernel.org> [v3.1+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>

parent a1e0c3cf

sound/pci/hda/patch_via.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -666,6 +666,9 @@ static void via_auto_init_analog_input(struct hda_codec *codec)
		/* init input-src */
		for (i = 0; i < spec->num_adc_nids; i++) {
		int adc_idx = spec->inputs[spec->cur_mux[i]].adc_idx;
		/* secondary ADCs must have the unique MUX */
		if (i > 0 && !spec->mux_nids[i])
		break;
		if (spec->mux_nids[adc_idx]) {
		int mux_idx = spec->inputs[spec->cur_mux[i]].mux_idx;
		snd_hda_codec_write(codec, spec->mux_nids[adc_idx], 0,