From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com

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 --- sound/soc/sh/rcar/gen.c | 1 + sound/soc/sh/rcar/rsnd.h | 2 ++ sound/soc/sh/rcar/src.c | 19 +++++++++++++++++++ 3 files changed, 22 insertions(+)

diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c index 5f9e0722..5db0557 100644 --- a/sound/soc/sh/rcar/gen.c +++ b/sound/soc/sh/rcar/gen.c @@ -284,6 +284,7 @@ static int rsnd_gen2_probe(struct platform_device *pdev, /* FIXME: it needs SSI_MODE2/3 in the future */ RSND_GEN_M_REG(SSI_BUSIF_MODE, 0x0, 0x80), RSND_GEN_M_REG(SSI_BUSIF_ADINR, 0x4, 0x80), + RSND_GEN_M_REG(BUSIF_DALIGN, 0x8, 0x80), RSND_GEN_M_REG(SSI_CTRL, 0x10, 0x80), RSND_GEN_M_REG(INT_ENABLE, 0x18, 0x80), }; diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h index 631b149..d119adf 100644 --- a/sound/soc/sh/rcar/rsnd.h +++ b/sound/soc/sh/rcar/rsnd.h @@ -90,6 +90,7 @@ enum rsnd_reg { RSND_REG_SHARE19, RSND_REG_SHARE20, RSND_REG_SHARE21, + RSND_REG_SHARE22,

RSND_REG_MAX, }; @@ -127,6 +128,7 @@ enum rsnd_reg { #define RSND_REG_AUDIO_CLK_SEL2 RSND_REG_SHARE19 #define RSND_REG_CMD_CTRL RSND_REG_SHARE20 #define RSND_REG_CMDOUT_TIMSEL RSND_REG_SHARE21 +#define RSND_REG_BUSIF_DALIGN RSND_REG_SHARE22

struct rsnd_of_data; struct rsnd_priv; 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 @@ int rsnd_src_ssiu_start(struct rsnd_mod *ssi_mod, 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 @@ int rsnd_src_ssiu_start(struct rsnd_mod *ssi_mod, * 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;