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ASoC: rsnd: src: make sure SRC soft reset

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Renesas SCU (Sampling Rate Convert Unit) includes SRC/CTU/MIX/DVC,
and these have similar register. xxxRSR (Software reset Register) is one
of them. These xxxRSR need be set to 1 to 0 when software reset.
Current rsnd driver has src.c / dvc.c, and we will have mix.c.
It is readable if these have same named function.
This patch adds rsnd_src_soft_reset() and make sure it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2015-07-15 07:12:18 +00:00 committed by Mark Brown
parent 636e4bad5c
commit 379febfd2e
1 changed files with 8 additions and 4 deletions
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12
sound/soc/sh/rcar/src.c
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@ -118,6 +118,12 @@ struct rsnd_src {
/* /*
* Gen1/Gen2 common functions * Gen1/Gen2 common functions
*/ */
static void rsnd_src_soft_reset(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, SRC_SWRSR, 0);
rsnd_mod_write(mod, SRC_SWRSR, 1);
}
static struct dma_chan *rsnd_src_dma_req(struct rsnd_dai_stream *io, static struct dma_chan *rsnd_src_dma_req(struct rsnd_dai_stream *io,
struct rsnd_mod *mod) struct rsnd_mod *mod)
{ {
@ -294,10 +300,6 @@ static int rsnd_src_set_convert_rate(struct rsnd_mod *mod,
if (convert_rate) if (convert_rate)
fsrate = 0x0400000 / convert_rate * runtime->rate; fsrate = 0x0400000 / convert_rate * runtime->rate;
/* set/clear soft reset */
rsnd_mod_write(mod, SRC_SWRSR, 0);
rsnd_mod_write(mod, SRC_SWRSR, 1);
/* Set channel number and output bit length */ /* Set channel number and output bit length */
rsnd_mod_write(mod, SRC_ADINR, rsnd_get_adinr(mod, io)); rsnd_mod_write(mod, SRC_ADINR, rsnd_get_adinr(mod, io));
@ -358,6 +360,8 @@ static int rsnd_src_init(struct rsnd_mod *mod,
rsnd_mod_hw_start(mod); rsnd_mod_hw_start(mod);
rsnd_src_soft_reset(mod);
src->err = 0; src->err = 0;
/* reset sync convert_rate */ /* reset sync convert_rate */