ASoC: soc-card: add snd_soc_card_probe()

Card related function should be implemented at soc-card now.
This patch adds it.

One note here is that card has "card->probe" and "card->late_probe"
callbacks.
Because it needs to care "late_probe", "card->probed" flag is set
under if (card->probe) at snd_soc_card_probe().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/87wo4wzv54.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-card.h

@@ -24,6 +24,8 @@ int snd_soc_card_suspend_post(struct snd_soc_card *card);
 int snd_soc_card_resume_pre(struct snd_soc_card *card);
 int snd_soc_card_resume_post(struct snd_soc_card *card);
 
+int snd_soc_card_probe(struct snd_soc_card *card);
+
 /* device driver data */
 static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,
 					    void *data)

sound/soc/soc-card.c

@@ -119,3 +119,26 @@ int snd_soc_card_resume_post(struct snd_soc_card *card)
 
 	return soc_card_ret(card, ret);
 }
+
+int snd_soc_card_probe(struct snd_soc_card *card)
+{
+	if (card->probe) {
+		int ret = card->probe(card);
+
+		if (ret < 0)
+			return soc_card_ret(card, ret);
+
+		/*
+		 * It has "card->probe" and "card->late_probe" callbacks.
+		 * So, set "probed" flag here, because it needs to care
+		 * about "late_probe".
+		 *
+		 * see
+		 *	snd_soc_bind_card()
+		 *	snd_soc_card_late_probe()
+		 */
+		card->probed = 1;
+	}
+
+	return 0;
+}

sound/soc/soc-core.c

@@ -1825,12 +1825,9 @@ static int snd_soc_bind_card(struct snd_soc_card *card)
 		goto probe_end;
 
 	/* initialise the sound card only once */
-	if (card->probe) {
-		ret = card->probe(card);
-		if (ret < 0)
-			goto probe_end;
-		card->probed = 1;
-	}
+	ret = snd_soc_card_probe(card);
+	if (ret < 0)
+		goto probe_end;
 
 	/* probe all components used by DAI links on this card */
 	ret = soc_probe_link_components(card);