[ALSA] hda: fix Mic in as output

Some laptop has an internal analog microphone that is 'fixed'.
This patch prevents creating a 'Mic In as Output' switch for
ports that can't be outputs.
Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/hda/patch_sigmatel.c

@@ -2283,7 +2283,14 @@ static int stac92xx_auto_create_multi_out_ctls(struct hda_codec *codec,
 	}
 
 	if (spec->mic_switch) {
+		unsigned int def_conf;
 		nid = cfg->input_pins[AUTO_PIN_MIC];
+		def_conf = snd_hda_codec_read(codec, nid, 0,
+						AC_VERB_GET_CONFIG_DEFAULT, 0);
+
+		/* some laptops have an internal analog microphone
+		 * which can't be used as a output */
+		if (get_defcfg_connect(def_conf) != AC_JACK_PORT_FIXED) {
 			pincap = snd_hda_param_read(codec, nid,
 							AC_PAR_PIN_CAP);
 			if (pincap & AC_PINCAP_OUT) {
@@ -2294,6 +2301,7 @@ static int stac92xx_auto_create_multi_out_ctls(struct hda_codec *codec,
 					return err;
 			}
 		}
+	}
 
 	return 0;
 }