+static int alc_auto_fill_adc_caps(struct hda_codec *codec, hda_nid_t *adc_nids,
+ hda_nid_t *cap_nids, int max_nums)
+{
+ hda_nid_t nid;
+ int i, nums = 0;
+
+ nid = codec->start_nid;
+ for (i = 0; i < codec->num_nodes; i++, nid++) {
+ hda_nid_t src;
+ const hda_nid_t *list;
+ unsigned int caps = get_wcaps(codec, nid);
+ int type = get_wcaps_type(caps);
+
+ if (type != AC_WID_AUD_IN || (caps & AC_WCAP_DIGITAL))
+ continue;
+ adc_nids[nums] = nid;
+ cap_nids[nums] = nid;
+ src = nid;
+ for (;;) {
+ int n;
+ type = get_wcaps_type(get_wcaps(codec, src));
+ if (type == AC_WID_PIN)
+ break;
+ if (type == AC_WID_AUD_SEL) {
+ cap_nids[nums] = src;
+ break;
+ }
+ n = snd_hda_get_conn_list(codec, src, &list);
+ if (n > 1) {
+ cap_nids[nums] = src;
+ break;
+ } else if (n != 1)
+ break;
+ src = *list;
+ }
+ if (++nums >= max_nums)
+ break;
+ }
+ return nums;
+}
+