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ASoC: rsnd: add rsnd_ssi_config_init() 

In order to enhance code readability, this patch adds
rsnd_ssi_config_init() and moves SSICR register settings to it.
This is prepare patch for TDM 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 2015-11-30 08:52:38 +00:00 committed by Mark Brown
parent f13edb8b28
commit 840ada3b04
1 changed files with 52 additions and 46 deletions
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98
sound/soc/sh/rcar/ssi.c
View File

@ -253,6 +253,55 @@ static void rsnd_ssi_master_clk_stop(struct rsnd_ssi *ssi,
rsnd_adg_ssi_clk_stop(mod);
}
static int rsnd_ssi_config_init(struct rsnd_ssi *ssi,
struct rsnd_dai_stream *io)
{
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
u32 cr_own;
u32 cr_mode;
/*
* always use 32bit system word.
* see also rsnd_ssi_master_clk_enable()
*/
cr_own = FORCE | SWL_32 | PDTA;
if (rdai->bit_clk_inv)
cr_own |= SCKP;
if (rdai->frm_clk_inv)
cr_own |= SWSP;
if (rdai->data_alignment)
cr_own |= SDTA;
if (rdai->sys_delay)
cr_own |= DEL;
if (rsnd_io_is_play(io))
cr_own |= TRMD;
switch (runtime->sample_bits) {
case 16:
cr_own |= DWL_16;
break;
case 32:
cr_own |= DWL_24;
break;
default:
return -EINVAL;
}
if (rsnd_ssi_is_dma_mode(rsnd_mod_get(ssi))) {
cr_mode = UIEN | OIEN | /* over/under run */
DMEN; /* DMA : enable DMA */
} else {
cr_mode = DIEN; /* PIO : enable Data interrupt */
}
ssi->cr_own = cr_own;
ssi->cr_mode = cr_mode;
return 0;
}
/*
* SSI mod common functions
*/
@ -261,9 +310,6 @@ static int rsnd_ssi_init(struct rsnd_mod *mod,
struct rsnd_priv *priv)
{
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
u32 cr;
int ret;
ssi->usrcnt++;
@ -277,49 +323,9 @@ static int rsnd_ssi_init(struct rsnd_mod *mod,
if (rsnd_ssi_is_parent(mod, io))
return 0;
cr = FORCE | PDTA;
/*
* always use 32bit system word for easy clock calculation.
* see also rsnd_ssi_master_clk_enable()
*/
cr |= SWL_32;
/*
* init clock settings for SSICR
*/
switch (runtime->sample_bits) {
case 16:
cr |= DWL_16;
break;
case 32:
cr |= DWL_24;
break;
default:
return -EIO;
}
if (rdai->bit_clk_inv)
cr |= SCKP;
if (rdai->frm_clk_inv)
cr |= SWSP;
if (rdai->data_alignment)
cr |= SDTA;
if (rdai->sys_delay)
cr |= DEL;
if (rsnd_io_is_play(io))
cr |= TRMD;
ssi->cr_own = cr;
if (rsnd_ssi_is_dma_mode(mod)) {
cr = UIEN | OIEN | /* over/under run */
DMEN; /* DMA : enable DMA */
} else {
cr = DIEN; /* PIO : enable Data interrupt */
}
ssi->cr_mode = cr;
ret = rsnd_ssi_config_init(ssi, io);
if (ret < 0)
return ret;
ssi->err = -1; /* ignore 1st error */