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ALSA: hda - Mute unused capture sources for Realtek codecs

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When a Realtek codec has a matrix-style capture-source selection, we
need to scan all connections instead of only imux items.  Otherwise some
input might be kept unmuted.  Although the corresponding input must be
dead so there should be no input from it, it's still safer to mute the
route completely.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-11-08 07:52:19 +01:00
parent 5a9a51799b
commit dccc1810f4
1 changed files with 7 additions and 6 deletions
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13
sound/pci/hda/patch_realtek.c
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@ -284,7 +284,7 @@ static int alc_mux_select(struct hda_codec *codec, unsigned int adc_idx,
struct alc_spec *spec = codec->spec;
const struct hda_input_mux *imux;
unsigned int mux_idx;
int i, type;
int i, type, num_conns;
hda_nid_t nid;
mux_idx = adc_idx >= spec->num_mux_defs ? 0 : adc_idx;
@ -307,16 +307,17 @@ static int alc_mux_select(struct hda_codec *codec, unsigned int adc_idx,
spec->capsrc_nids[adc_idx] : spec->adc_nids[adc_idx];
/* no selection? */
if (snd_hda_get_conn_list(codec, nid, NULL) <= 1)
num_conns = snd_hda_get_conn_list(codec, nid, NULL);
if (num_conns <= 1)
return 1;
type = get_wcaps_type(get_wcaps(codec, nid));
if (type == AC_WID_AUD_MIX) {
/* Matrix-mixer style (e.g. ALC882) */
for (i = 0; i < imux->num_items; i++) {
unsigned int v = (i == idx) ? 0 : HDA_AMP_MUTE;
snd_hda_codec_amp_stereo(codec, nid, HDA_INPUT,
imux->items[i].index,
int active = imux->items[idx].index;
for (i = 0; i < num_conns; i++) {
unsigned int v = (i == active) ? 0 : HDA_AMP_MUTE;
snd_hda_codec_amp_stereo(codec, nid, HDA_INPUT, i,
HDA_AMP_MUTE, v);
}
} else {