ALSA: hda - Consolidate cap_sync_hook and capture_switch_hook

Two hooks in hda_gen_spec, cap_sync_hook and capture_switch_hook, play
very similar roles.  The only differences are that the former is
called more often (e.g. at init or switching capsrc) while the latter
can take an on/off argument.

As a more generic implementation, consolidate these two hooks, and
pass snd_ctl_elem_value pointer as the second argument.  If the
secondary argument is non-NULL, it can take the on/off value, so the
caller handles it like the former capture_switch_hook.  If it's NULL,
it's called in the init or capsrc switch case.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_generic.c

@@ -2738,7 +2738,7 @@ static int cap_put_caller(struct snd_kcontrol *kcontrol,
 	mutex_unlock(&codec->control_mutex);
 	snd_hda_codec_flush_amp_cache(codec); /* flush the updates */
 	if (err >= 0 && spec->cap_sync_hook)
-		spec->cap_sync_hook(codec);
+		spec->cap_sync_hook(codec, ucontrol);
 	return err;
 }
 
@@ -2774,23 +2774,9 @@ static const struct snd_kcontrol_new cap_vol_temp = {
 static int cap_sw_put(struct snd_kcontrol *kcontrol,
 		      struct snd_ctl_elem_value *ucontrol)
 {
-	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
-	struct hda_gen_spec *spec = codec->spec;
-	int ret;
-
-	ret = cap_put_caller(kcontrol, ucontrol,
+	return 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 = {
@@ -2860,6 +2846,7 @@ static bool is_inv_dmic_pin(struct hda_codec *codec, hda_nid_t nid)
 	return false;
 }
 
+/* capture switch put callback for a single control with hook call */
 static int cap_single_sw_put(struct snd_kcontrol *kcontrol,
 			     struct snd_ctl_elem_value *ucontrol)
 {
@@ -2871,11 +2858,8 @@ static int cap_single_sw_put(struct snd_kcontrol *kcontrol,
 	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);
-	}
+	if (spec->cap_sync_hook)
+		spec->cap_sync_hook(codec, ucontrol);
 
 	return ret;
 }
@@ -2904,7 +2888,7 @@ static int add_single_cap_ctl(struct hda_codec *codec, const char *label,
 			   amp_val_replace_channels(ctl, chs));
 	if (!knew)
 		return -ENOMEM;
-	if (is_switch && spec->capture_switch_hook)
+	if (is_switch)
 		knew->put = cap_single_sw_put;
 	if (!inv_dmic)
 		return 0;
@@ -2920,7 +2904,7 @@ static int add_single_cap_ctl(struct hda_codec *codec, const char *label,
 			   amp_val_replace_channels(ctl, 2));
 	if (!knew)
 		return -ENOMEM;
-	if (is_switch && spec->capture_switch_hook)
+	if (is_switch)
 		knew->put = cap_single_sw_put;
 	return 0;
 }
@@ -3280,7 +3264,7 @@ static int mux_select(struct hda_codec *codec, unsigned int adc_idx,
 		return 0;
 	snd_hda_activate_path(codec, path, true, false);
 	if (spec->cap_sync_hook)
-		spec->cap_sync_hook(codec);
+		spec->cap_sync_hook(codec, NULL);
 	return 1;
 }
 
@@ -4610,7 +4594,7 @@ static void init_input_src(struct hda_codec *codec)
 		update_shared_mic_hp(codec, spec->cur_mux[0]);
 
 	if (spec->cap_sync_hook)
-		spec->cap_sync_hook(codec);
+		spec->cap_sync_hook(codec, NULL);
 }
 
 /* set right pin controls for digital I/O */

sound/pci/hda/hda_generic.h

@@ -233,7 +233,8 @@ struct hda_gen_spec {
 	/* hooks */
 	void (*init_hook)(struct hda_codec *codec);
 	void (*automute_hook)(struct hda_codec *codec);
-	void (*cap_sync_hook)(struct hda_codec *codec);
+	void (*cap_sync_hook)(struct hda_codec *codec,
+			      struct snd_ctl_elem_value *ucontrol);
 
 	/* PCM hooks */
 	void (*pcm_playback_hook)(struct hda_pcm_stream *hinfo,
@@ -252,9 +253,6 @@ 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);

sound/pci/hda/patch_realtek.c

@@ -670,7 +670,8 @@ static void alc_inv_dmic_sync(struct hda_codec *codec, bool force)
 	}
 }
 
-static void alc_inv_dmic_hook(struct hda_codec *codec)
+static void alc_inv_dmic_hook(struct hda_codec *codec,
+			     struct snd_ctl_elem_value *ucontrol)
 {
 	alc_inv_dmic_sync(codec, false);
 }

sound/pci/hda/patch_sigmatel.c

@@ -316,11 +316,17 @@ static void stac_gpio_set(struct hda_codec *codec, unsigned int mask,
 }
 
 /* hook for controlling mic-mute LED GPIO */
-static void stac_capture_led_hook(struct hda_codec *codec, bool enable)
+static void stac_capture_led_hook(struct hda_codec *codec,
+			       struct snd_ctl_elem_value *ucontrol)
 {
 	struct sigmatel_spec *spec = codec->spec;
-	bool mute = !enable;
+	bool mute;
 
+	if (!ucontrol)
+		return;
+
+	mute = !(ucontrol->value.integer.value[0] ||
+		 ucontrol->value.integer.value[1]);
 	if (spec->mic_mute_led_on != mute) {
 		spec->mic_mute_led_on = mute;
 		if (mute)
@@ -3806,7 +3812,7 @@ static void stac_setup_gpio(struct hda_codec *codec)
 		spec->mic_mute_led_on = true;
 		spec->gpio_data |= spec->mic_mute_led_gpio;
 
-		spec->gen.capture_switch_hook = stac_capture_led_hook;
+		spec->gen.cap_sync_hook = stac_capture_led_hook;
 	}
 }