ASoC: soc-core: add for_each_xxx macro for aux_dev

To be more readable code, this patch adds
new for_each_xxx() macro for aux_dev.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87ftmc6w8s.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc.h

@@ -1087,6 +1087,10 @@ struct snd_soc_card {
 	for ((i) = 0;							\
 	     ((i) < (card)->num_links) && ((link) = &(card)->dai_link[i]); \
 	     (i)++)
+#define for_each_card_pre_auxs(card, i, aux)				\
+	for ((i) = 0;							\
+	     ((i) < (card)->num_aux_devs) && ((aux) = &(card)->aux_dev[i]); \
+	     (i)++)
 
 #define for_each_card_links(card, link)				\
 	list_for_each_entry(link, &(card)->dai_link_list, list)
@@ -1098,6 +1102,12 @@ struct snd_soc_card {
 #define for_each_card_rtds_safe(card, rtd, _rtd)	\
 	list_for_each_entry_safe(rtd, _rtd, &(card)->rtd_list, list)
 
+#define for_each_card_auxs(card, component)			\
+	list_for_each_entry(component, &card->aux_comp_list, card_aux_list)
+#define for_each_card_auxs_safe(card, component, _comp)	\
+	list_for_each_entry_safe(component, _comp,	\
+				 &card->aux_comp_list, card_aux_list)
+
 #define for_each_card_components(card, component)			\
 	list_for_each_entry(component, &(card)->component_dev_list, card_list)
 

sound/soc/meson/axg-card.c

@@ -111,6 +111,7 @@ static void axg_card_clean_references(struct axg_card *priv)
 	struct snd_soc_card *card = &priv->card;
 	struct snd_soc_dai_link *link;
 	struct snd_soc_dai_link_component *codec;
+	struct snd_soc_aux_dev *aux;
 	int i, j;
 
 	if (card->dai_link) {
@@ -123,8 +124,8 @@ static void axg_card_clean_references(struct axg_card *priv)
 	}
 
 	if (card->aux_dev) {
-		for (i = 0; i < card->num_aux_devs; i++)
-			of_node_put(card->aux_dev[i].dlc.of_node);
+		for_each_card_pre_auxs(card, i, aux)
+			of_node_put(aux->dlc.of_node);
 	}
 
 	kfree(card->dai_link);
@@ -157,7 +158,7 @@ static int axg_card_add_aux_devices(struct snd_soc_card *card)
 	card->aux_dev = aux;
 	card->num_aux_devs = num;
 
-	for (i = 0; i < card->num_aux_devs; i++, aux++) {
+	for_each_card_pre_auxs(card, i, aux) {
 		aux->dlc.of_node =
 			of_parse_phandle(node, "audio-aux-devs", i);
 		if (!aux->dlc.of_node)

sound/soc/soc-core.c

@@ -1533,9 +1533,9 @@ static int soc_probe_link_dais(struct snd_soc_card *card,
 	return ret;
 }
 
-static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
+static int soc_bind_aux_dev(struct snd_soc_card *card,
+			    struct snd_soc_aux_dev *aux_dev)
 {
-	struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
 	struct snd_soc_component *component;
 
 	/* codecs, usually analog devices */
@@ -1544,6 +1544,7 @@ static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
 		return -EPROBE_DEFER;
 
 	component->init = aux_dev->init;
+	/* see for_each_card_auxs */
 	list_add(&component->card_aux_list, &card->aux_comp_list);
 
 	return 0;
@@ -1556,7 +1557,7 @@ static int soc_probe_aux_devices(struct snd_soc_card *card)
 	int ret;
 
 	for_each_comp_order(order) {
-		list_for_each_entry(comp, &card->aux_comp_list, card_aux_list) {
+		for_each_card_auxs(card, comp) {
 			if (comp->driver->probe_order == order) {
 				ret = soc_probe_component(card,	comp);
 				if (ret < 0) {
@@ -1578,8 +1579,7 @@ static void soc_remove_aux_devices(struct snd_soc_card *card)
 	int order;
 
 	for_each_comp_order(order) {
-		list_for_each_entry_safe(comp, _comp,
-			&card->aux_comp_list, card_aux_list) {
+		for_each_card_auxs_safe(card, comp, _comp) {
 
 			if (comp->driver->remove_order == order) {
 				soc_remove_component(comp);
@@ -1913,6 +1913,7 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)
 {
 	struct snd_soc_pcm_runtime *rtd;
 	struct snd_soc_dai_link *dai_link;
+	struct snd_soc_aux_dev *aux;
 	int ret, i, order;
 
 	mutex_lock(&client_mutex);
@@ -1943,8 +1944,8 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)
 	}
 
 	/* bind aux_devs too */
-	for (i = 0; i < card->num_aux_devs; i++) {
-		ret = soc_bind_aux_dev(card, i);
+	for_each_card_pre_auxs(card, i, aux) {
+		ret = soc_bind_aux_dev(card, aux);
 		if (ret != 0)
 			goto probe_end;
 	}