ASoC: Provide API for reordering channels

The patch adds an interface to set the relationship between audio
channel number and slot number. The interface should be really useful
because audio channel n doesn't always use slot n in all platforms. And
for some devices, the relationship even can change with sound mode
switch in 2.1,3.1,4.1,5.1,6.1,7.1 etc.

Signed-off-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 7 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);
 
         /*