ASoC: soc-dapm.c: merge dapm_power_one_widget() and dapm_widget_set_power()

dapm_widget_set_power() (= X) is called only from
dapm_power_one_widget() (= Y), and total purpose of these functions are
calling dapm_seq_insert() (= a) accordingly for each widget.

(X)	static void dapm_widget_set_power(...)
	{
		...
		if (power)
(a)			dapm_seq_insert(w, up_list, true);
		else
(a)			dapm_seq_insert(w, down_list, false);
	}

(Y)	static void dapm_power_one_widget(...)
	{
		..

		switch (w->id) {
		case snd_soc_dapm_pre:
(a)			dapm_seq_insert(w, down_list, false);
			break;
		case snd_soc_dapm_post:
(a)			dapm_seq_insert(w, up_list, true);
			break;

		default:
			power = dapm_widget_power_check(w);

(X)			dapm_widget_set_power(w, power, up_list, down_list);
			break;
		}
	}

It should be more simple, but the code is unnecessarily complicated,
and difficult to read/understand. This patch merge these into one.

Link: https://lore.kernel.org/all/87tu42owdd.wl-kuninori.morimoto.gx@renesas.com/
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://lore.kernel.org/r/8735bktzrx.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-dapm.c

@@ -1873,11 +1873,25 @@ static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
 		dapm_mark_dirty(peer, "peer state change");
 }
 
-static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
+static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
 				  struct list_head *up_list,
 				  struct list_head *down_list)
 {
 	struct snd_soc_dapm_path *path;
+	int power;
+
+	switch (w->id) {
+	case snd_soc_dapm_pre:
+		power = 0;
+		goto end;
+	case snd_soc_dapm_post:
+		power = 1;
+		goto end;
+	default:
+		break;
+	}
+
+	power = dapm_widget_power_check(w);
 
 	if (w->power == power)
 		return;
@@ -1897,35 +1911,13 @@ static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
 	if (!w->is_supply)
 		snd_soc_dapm_widget_for_each_sink_path(w, path)
 			dapm_widget_set_peer_power(path->sink, power, path->connect);
-
+end:
 	if (power)
 		dapm_seq_insert(w, up_list, true);
 	else
 		dapm_seq_insert(w, down_list, false);
 }
 
-static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
-				  struct list_head *up_list,
-				  struct list_head *down_list)
-{
-	int power;
-
-	switch (w->id) {
-	case snd_soc_dapm_pre:
-		dapm_seq_insert(w, down_list, false);
-		break;
-	case snd_soc_dapm_post:
-		dapm_seq_insert(w, up_list, true);
-		break;
-
-	default:
-		power = dapm_widget_power_check(w);
-
-		dapm_widget_set_power(w, power, up_list, down_list);
-		break;
-	}
-}
-
 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
 {
 	if (dapm->idle_bias_off)