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ALSA: hda - Exclude unusable ADCs for ALC88x

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On Realtek codecs, a digital mic pin is connected often only to a single
ADC.  But the parser tries to set up all ADCs no matter whether the
digital mic is available, and results in non-selectable input source.

This patch adds a check of input-source availability of each ADC, and
excludes ones that don't support all input sources.

Reference: Novell bnc#561235
	http://bugzilla.novell.com/show_bug.cgi?id=561235

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-12-08 12:52:47 +01:00
parent 23033b2bce
commit d11f74c62f
1 changed files with 12 additions and 1 deletions
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13
sound/pci/hda/patch_realtek.c
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@ -10021,10 +10021,12 @@ static int patch_alc882(struct hda_codec *codec)
spec->init_amp = ALC_INIT_DEFAULT; /* always initialize */
if (!spec->adc_nids && spec->input_mux) {
int i;
int i, j;
spec->num_adc_nids = 0;
for (i = 0; i < ARRAY_SIZE(alc882_adc_nids); i++) {
const struct hda_input_mux *imux = spec->input_mux;
hda_nid_t cap;
hda_nid_t items[16];
hda_nid_t nid = alc882_adc_nids[i];
unsigned int wcap = get_wcaps(codec, nid);
/* get type */
@ -10035,6 +10037,15 @@ static int patch_alc882(struct hda_codec *codec)
err = snd_hda_get_connections(codec, nid, &cap, 1);
if (err < 0)
continue;
err = snd_hda_get_connections(codec, cap, items,
ARRAY_SIZE(items));
if (err < 0)
continue;
for (j = 0; j < imux->num_items; j++)
if (imux->items[j].index >= err)
break;
if (j < imux->num_items)
continue;
spec->private_capsrc_nids[spec->num_adc_nids] = cap;
spec->num_adc_nids++;
}