2 files changed, 22 insertions, 0 deletions

diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index 915c4357945c..9483c55f871b 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -18,9 +18,11 @@
 #ifndef __HDMI_CODEC_H__
 #define __HDMI_CODEC_H__
 
+#include <linux/of_graph.h>
 #include <linux/hdmi.h>
 #include <drm/drm_edid.h>
 #include <sound/asoundef.h>
+#include <sound/soc.h>
 #include <uapi/sound/asound.h>
 
 /*
@@ -87,6 +89,13 @@ struct hdmi_codec_ops {
          */
         int (*get_eld)(struct device *dev, void *data,
                        uint8_t *buf, size_t len);
+
+        /*
+         * Getting DAI ID
+         * Optional
+         */
+        int (*get_dai_id)(struct snd_soc_component *comment,
+                          struct device_node *endpoint);
 };
 
 /* HDMI codec initalization data */
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 8659b76b066a..6d05161b625d 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -719,6 +719,18 @@ static const struct snd_soc_dai_driver hdmi_spdif_dai = {
         .pcm_new = hdmi_codec_pcm_new,
 };
 
+static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
+                                 struct device_node *endpoint)
+{
+        struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
+        int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
+
+        if (hcp->hcd.ops->get_dai_id)
+                ret = hcp->hcd.ops->get_dai_id(component, endpoint);
+
+        return ret;
+}
+
 static struct snd_soc_codec_driver hdmi_codec = {
         .component_driver = {
                 .controls               = hdmi_controls,
@@ -727,6 +739,7 @@ static struct snd_soc_codec_driver hdmi_codec = {
                 .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
                 .dapm_routes            = hdmi_routes,
                 .num_dapm_routes        = ARRAY_SIZE(hdmi_routes),
+                .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
         },
 };