ASoC: rsnd: care audio local bus data format consistency
R-Car sound uses Audio Local Bus which uses Lch/Rch format.
This bus is used if driver uses BUSIF.
But sound data is written as Rch/Lch format in register.
This means Rch <-> Lch will be inverted.
SSIU :: BUSIF_DALIGN is used to controlling data format.
Reported-by: Jun Watanabe <jun.watanabe.ue@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index 1ef811a..9183e01 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -110,6 +110,8 @@
struct rsnd_dai *rdai,
int use_busif)
{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(ssi_mod);
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
int ssi_id = rsnd_mod_id(ssi_mod);
/*
@@ -146,10 +148,27 @@
* DMA settings for SSIU
*/
if (use_busif) {
+ u32 val = 0x76543210;
+ u32 mask = ~0;
+
rsnd_mod_write(ssi_mod, SSI_BUSIF_ADINR,
rsnd_get_adinr(ssi_mod));
rsnd_mod_write(ssi_mod, SSI_BUSIF_MODE, 1);
rsnd_mod_write(ssi_mod, SSI_CTRL, 0x1);
+
+ mask <<= runtime->channels * 4;
+ val = val & mask;
+
+ switch (runtime->sample_bits) {
+ case 16:
+ val |= 0x67452301 & ~mask;
+ break;
+ case 32:
+ val |= 0x76543210 & ~mask;
+ break;
+ }
+ rsnd_mod_write(ssi_mod, BUSIF_DALIGN, val);
+
}
return 0;