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ASoC: rsnd: DVC kctrl sets once

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Same DVC might be used few times if system/platform is using MIX.
For example below case.

	DAI0 playback = <&src0 &ctu02 &mix0 &dvc0 &ssi0>;
	DAI1 playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;

This case, ALSA will have DVC,0 and DVC,1 kcontrol interfaces,
but these are same DVC. This is confusing.
This patch adds new flags and avoid such case.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2017-10-01 23:48:29 +00:00 committed by Mark Brown
parent d0cf7fc948
commit b918f1bc7f
1 changed files with 8 additions and 0 deletions
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8
sound/soc/sh/rcar/dvc.c
View file

@ -44,8 +44,11 @@ struct rsnd_dvc {
struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */
struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */
struct rsnd_kctrl_cfg_s rdown; /* Ramp Rate Down */
u32 flags;
};
#define KCTRL_INITIALIZED (1 << 0)
#define rsnd_dvc_get(priv, id) ((struct rsnd_dvc *)(priv->dvc) + id)
#define rsnd_dvc_nr(priv) ((priv)->dvc_nr)
@ -254,6 +257,9 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
int channels = rsnd_rdai_channels_get(rdai);
int ret;
if (rsnd_flags_has(dvc, KCTRL_INITIALIZED))
return 0;
/* Volume */
ret = rsnd_kctrl_new_m(mod, io, rtd,
is_play ?
@ -307,6 +313,8 @@ static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
if (ret < 0)
return ret;
rsnd_flags_set(dvc, KCTRL_INITIALIZED);
return 0;
}