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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>
This commit is contained in:
Kuninori Morimoto 2014-07-30 23:52:26 -07:00 committed by Mark Brown
parent 054cd7f4b9
commit 1cc7195929
3 changed files with 22 additions and 0 deletions
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1
sound/soc/sh/rcar/gen.c
View File

@ -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),
};

2
sound/soc/sh/rcar/rsnd.h
View File

@ -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;

19
sound/soc/sh/rcar/src.c
View File

@ -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;