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ASoC: rsnd: add rsnd_set_slot() / rsnd_get_slot_num() 

TDM will use 6 or 8 slots on 1 SSI, and Multi channel will use
6 or 8 slots on few SSI (each SSI uses 2 slots).
Thus, this adds new slot control functions which can be prepare
for Multi channel support.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2015-12-17 02:57:47 +00:00 committed by Mark Brown
parent c140284b80
commit 750fd445ac
2 changed files with 21 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
sound/soc/sh/rcar/core.c
View File

@ -191,6 +191,13 @@ int rsnd_io_is_working(struct rsnd_dai_stream *io)
return !!io->substream;
}
void rsnd_set_slot(struct rsnd_dai *rdai,
int slots, int num)
{
rdai->slots = slots;
rdai->slots_num = num;
}
int rsnd_get_slot(struct rsnd_dai_stream *io)
{
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
@ -198,10 +205,17 @@ int rsnd_get_slot(struct rsnd_dai_stream *io)
return rdai->slots;
}
int rsnd_get_slot_num(struct rsnd_dai_stream *io)
{
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
return rdai->slots_num;
}
int rsnd_get_slot_width(struct rsnd_dai_stream *io)
{
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
int chan = runtime->channels;
int chan = runtime->channels / rsnd_get_slot_num(io);
/* TDM Extend Mode needs 8ch */
if (chan == 6)
@ -579,7 +593,7 @@ static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
switch (slots) {
case 6:
/* TDM Extend Mode */
rdai->slots = slots;
rsnd_set_slot(rdai, slots, 1);
break;
default:
dev_err(dev, "unsupported TDM slots (%d)\n", slots);
@ -660,7 +674,7 @@ static int rsnd_dai_probe(struct rsnd_priv *priv)
rdai->playback.rdai = rdai;
rdai->capture.rdai = rdai;
rdai->slots = 2; /* default */
rsnd_set_slot(rdai, 2, 1); /* default */
#define mod_parse(name) \
node = rsnd_##name##_of_node(priv); \

4
sound/soc/sh/rcar/rsnd.h
View File

@ -293,8 +293,11 @@ void rsnd_mod_interrupt(struct rsnd_mod *mod,
void (*callback)(struct rsnd_mod *mod,
struct rsnd_dai_stream *io));
void rsnd_set_slot(struct rsnd_dai *rdai,
int slots, int slots_total);
int rsnd_get_slot(struct rsnd_dai_stream *io);
int rsnd_get_slot_width(struct rsnd_dai_stream *io);
int rsnd_get_slot_num(struct rsnd_dai_stream *io);
/*
* R-Car sound DAI
@ -334,6 +337,7 @@ struct rsnd_dai {
struct rsnd_priv *priv;
int slots;
int slots_num;
unsigned int clk_master:1;
unsigned int bit_clk_inv:1;