2 files changed, 31 insertions, 0 deletions

diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 16963d4d5df2..e0c7fa7b1060 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -114,6 +114,10 @@ int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt);
 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
         unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width);
 
+int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
+        unsigned int tx_num, unsigned int *tx_slot,
+        unsigned int rx_num, unsigned int *rx_slot);
+
 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);
 
 /* Digital Audio Interface mute */
@@ -148,6 +152,9 @@ struct snd_soc_dai_ops {
         int (*set_tdm_slot)(struct snd_soc_dai *dai,
                 unsigned int tx_mask, unsigned int rx_mask,
                 int slots, int slot_width);
+        int (*set_channel_map)(struct snd_soc_dai *dai,
+                unsigned int tx_num, unsigned int *tx_slot,
+                unsigned int rx_num, unsigned int *rx_slot);
         int (*set_tristate)(struct snd_soc_dai *dai, int tristate);
 
         /*
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 05fdc8023da4..f5b356f8acfb 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2253,6 +2253,30 @@ int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
 EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot);
 
 /**
+ * snd_soc_dai_set_channel_map - configure DAI audio channel map
+ * @dai: DAI
+ * @tx_num: how many TX channels
+ * @tx_slot: pointer to an array which imply the TX slot number channel
+ *           0~num-1 uses
+ * @rx_num: how many RX channels
+ * @rx_slot: pointer to an array which imply the RX slot number channel
+ *           0~num-1 uses
+ *
+ * configure the relationship between channel number and TDM slot number.
+ */
+int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai,
+        unsigned int tx_num, unsigned int *tx_slot,
+        unsigned int rx_num, unsigned int *rx_slot)
+{
+        if (dai->ops && dai->ops->set_channel_map)
+                return dai->ops->set_channel_map(dai, tx_num, tx_slot,
+                        rx_num, rx_slot);
+        else
+                return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map);
+
+/**
  * snd_soc_dai_set_tristate - configure DAI system or master clock.
  * @dai: DAI
  * @tristate: tristate enable