[alsa-devel] [PATCH v2 08/13] ASoC: Bind new DAI links after probing components

[mengdong.lin at linux.intel.com]

From: Mengdong Lin <mengdong.lin at linux.intel.com>

Probing components can bring new DAI or DAI links based on the topology
info. This patch finds the unbound DAI links and bind them.

Signed-off-by: Mengdong Lin <mengdong.lin at linux.intel.com>

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 86c3219..cb49a31 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1747,6 +1747,7 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)
 {
 	struct snd_soc_codec *codec;
 	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_dai_link *dai_link;
 	int ret, i, order;
 
 	mutex_lock(&client_mutex);
@@ -1834,6 +1835,21 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)
 		}
 	}
 
+	/* Find new DAI links added during probing components and bind them.
+	 * Components with topology may bring new DAIs and DAI links.
+	 */
+	list_for_each_entry(dai_link, &card->dai_link_list, list) {
+		if (soc_is_dai_link_bound(card, dai_link))
+			continue;
+
+		ret = soc_init_dai_link(card, dai_link);
+		if (ret)
+			goto probe_dai_err;
+		ret = soc_bind_dai_link(card, dai_link);
+		if (ret)
+			goto probe_dai_err;
+	}
+
 	/* probe all DAI links on this card */
 	for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
 			order++) {
-- 
1.9.1