ALSA: hda - Turn on extra EAPDs on Conexant codecs

Some machines seem to use EAPD control of the unused pin for controlling
the overall EAPD.  Since the driver currently doesn't check the EAPD of
unused pins, the EAPD isn't enabled.  For avoiding such a problem, turn
all extra EAPDs on as default.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_conexant.c

@@ -155,6 +155,10 @@ struct conexant_spec {
 	unsigned int mic_boost; /* offset into cxt5066_analog_mic_boost */
 
 	unsigned int beep_amp;
+
+	/* extra EAPD pins */
+	unsigned int num_eapds;
+	hda_nid_t eapds[4];
 };
 
 static int conexant_playback_pcm_open(struct hda_pcm_stream *hinfo,
@@ -3901,6 +3905,38 @@ static void cx_auto_parse_beep(struct hda_codec *codec)
 #define cx_auto_parse_beep(codec)
 #endif
 
+static bool found_in_nid_list(hda_nid_t nid, const hda_nid_t *list, int nums)
+{
+	int i;
+	for (i = 0; i < nums; i++)
+		if (list[i] == nid)
+			return true;
+	return false;
+}
+
+/* parse extra-EAPD that aren't assigned to any pins */
+static void cx_auto_parse_eapd(struct hda_codec *codec)
+{
+	struct conexant_spec *spec = codec->spec;
+	struct auto_pin_cfg *cfg = &spec->autocfg;
+	hda_nid_t nid, end_nid;
+
+	end_nid = codec->start_nid + codec->num_nodes;
+	for (nid = codec->start_nid; nid < end_nid; nid++) {
+		if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN)
+			continue;
+		if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_EAPD))
+			continue;
+		if (found_in_nid_list(nid, cfg->line_out_pins, cfg->line_outs) ||
+		    found_in_nid_list(nid, cfg->hp_pins, cfg->hp_outs) ||
+		    found_in_nid_list(nid, cfg->speaker_pins, cfg->speaker_outs))
+			continue;
+		spec->eapds[spec->num_eapds++] = nid;
+		if (spec->num_eapds >= ARRAY_SIZE(spec->eapds))
+			break;
+	}
+}
+
 static int cx_auto_parse_auto_config(struct hda_codec *codec)
 {
 	struct conexant_spec *spec = codec->spec;
@@ -3914,6 +3950,7 @@ static int cx_auto_parse_auto_config(struct hda_codec *codec)
 	cx_auto_parse_input(codec);
 	cx_auto_parse_digital(codec);
 	cx_auto_parse_beep(codec);
+	cx_auto_parse_eapd(codec);
 	return 0;
 }
 
@@ -4001,6 +4038,8 @@ static void cx_auto_init_output(struct hda_codec *codec)
 		}
 	}
 	cx_auto_update_speakers(codec);
+	/* turn on/off extra EAPDs, too */
+	cx_auto_turn_eapd(codec, spec->num_eapds, spec->eapds, true);
 }
 
 static void cx_auto_init_input(struct hda_codec *codec)