ALSA: hda - Fix jack gating when auto_{mute,mic} is suppressed.

The snd_hda_jack_set_gating_jack() call didn't work when
auto_{mute,mic} is suppressed because (1) am_entry is
not filled with nid of the mic pin. (2) The jacks are not
created (by snd_hda_jack_detect_enable_callback) before the
snd_hda_jack_set_gating_jack call.

Now we use the first input pin nid directly, and create the jack if it
doesn't exist yet.
Signed-off-by: Chih-Chung Chang <chihchung@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_jack.c

@@ -253,8 +253,8 @@ EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable);
 int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
 				 hda_nid_t gating_nid)
 {
-	struct hda_jack_tbl *gated = snd_hda_jack_tbl_get(codec, gated_nid);
-	struct hda_jack_tbl *gating = snd_hda_jack_tbl_get(codec, gating_nid);
+	struct hda_jack_tbl *gated = snd_hda_jack_tbl_new(codec, gated_nid);
+	struct hda_jack_tbl *gating = snd_hda_jack_tbl_new(codec, gating_nid);
 
 	if (!gated || !gating)
 		return -EINVAL;

sound/pci/hda/patch_realtek.c

@@ -3260,6 +3260,28 @@ static void alc_fixup_headset_mode_alc668(struct hda_codec *codec,
 	alc_fixup_headset_mode(codec, fix, action);
 }
 
+/* Returns the nid of the external mic input pin, or 0 if it cannot be found. */
+static int find_ext_mic_pin(struct hda_codec *codec)
+{
+	struct alc_spec *spec = codec->spec;
+	struct auto_pin_cfg *cfg = &spec->gen.autocfg;
+	hda_nid_t nid;
+	unsigned int defcfg;
+	int i;
+
+	for (i = 0; i < cfg->num_inputs; i++) {
+		if (cfg->inputs[i].type != AUTO_PIN_MIC)
+			continue;
+		nid = cfg->inputs[i].pin;
+		defcfg = snd_hda_codec_get_pincfg(codec, nid);
+		if (snd_hda_get_input_pin_attr(defcfg) == INPUT_PIN_ATTR_INT)
+			continue;
+		return nid;
+	}
+
+	return 0;
+}
+
 static void alc271_hp_gate_mic_jack(struct hda_codec *codec,
 				    const struct hda_fixup *fix,
 				    int action)
@@ -3267,11 +3289,12 @@ static void alc271_hp_gate_mic_jack(struct hda_codec *codec,
 	struct alc_spec *spec = codec->spec;
 
 	if (action == HDA_FIXUP_ACT_PROBE) {
-		if (snd_BUG_ON(!spec->gen.am_entry[1].pin ||
-			       !spec->gen.autocfg.hp_pins[0]))
+		int mic_pin = find_ext_mic_pin(codec);
+		int hp_pin = spec->gen.autocfg.hp_pins[0];
+
+		if (snd_BUG_ON(!mic_pin || !hp_pin))
 			return;
-		snd_hda_jack_set_gating_jack(codec, spec->gen.am_entry[1].pin,
-					     spec->gen.autocfg.hp_pins[0]);
+		snd_hda_jack_set_gating_jack(codec, mic_pin, hp_pin);
 	}
 }