ALSA: hda - Add capture_switch_hook to generic parser

Add a hook for the capture mixer switch.  This will be used by IDT
codecs for controlling the mic-mute LED.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_generic.c

@@ -2517,9 +2517,23 @@ static const struct snd_kcontrol_new cap_vol_temp = {
 static int cap_sw_put(struct snd_kcontrol *kcontrol,
 		      struct snd_ctl_elem_value *ucontrol)
 {
-	return cap_put_caller(kcontrol, ucontrol,
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct hda_gen_spec *spec = codec->spec;
+	int ret;
+
+	ret = cap_put_caller(kcontrol, ucontrol,
 			      snd_hda_mixer_amp_switch_put,
 			      NID_PATH_MUTE_CTL);
+	if (ret < 0)
+		return ret;
+
+	if (spec->capture_switch_hook) {
+		bool enable = (ucontrol->value.integer.value[0] ||
+			       ucontrol->value.integer.value[1]);
+		spec->capture_switch_hook(codec, enable);
+	}
+
+	return ret;
 }
 
 static const struct snd_kcontrol_new cap_sw_temp = {

sound/pci/hda/hda_generic.h

@@ -227,6 +227,9 @@ struct hda_gen_spec {
 				   struct hda_jack_tbl *tbl);
 	void (*mic_autoswitch_hook)(struct hda_codec *codec,
 				    struct hda_jack_tbl *tbl);
+
+	/* capture switch hook (for mic-mute LED) */
+	void (*capture_switch_hook)(struct hda_codec *codec, bool enable);
 };
 
 int snd_hda_gen_spec_init(struct hda_gen_spec *spec);