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ASoC: rsnd: dvc: make sure DVC soft reset 

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_dvc_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 07:12:00 +00:00 committed by Mark Brown
parent da599fd34b
commit 636e4bad5c
1 changed files with 8 additions and 3 deletions
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11
sound/soc/sh/rcar/dvc.c
View File

@ -64,6 +64,12 @@ static const char * const dvc_ramp_rate[] = {
"0.125 dB/8192 steps", /* 10111 */
};
static void rsnd_dvc_soft_reset(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, DVC_SWRSR, 0);
rsnd_mod_write(mod, DVC_SWRSR, 1);
}
static void rsnd_dvc_volume_update(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
@ -160,15 +166,14 @@ static int rsnd_dvc_init(struct rsnd_mod *dvc_mod,
rsnd_mod_hw_start(dvc_mod);
rsnd_dvc_soft_reset(dvc_mod);
/*
* fixme
* it doesn't support CTU/MIX
*/
rsnd_mod_write(dvc_mod, CMD_ROUTE_SLCT, route[src_id]);
rsnd_mod_write(dvc_mod, DVC_SWRSR, 0);
rsnd_mod_write(dvc_mod, DVC_SWRSR, 1);
rsnd_mod_write(dvc_mod, DVC_DVUIR, 1);
rsnd_mod_write(dvc_mod, DVC_ADINR, rsnd_get_adinr(dvc_mod, io));