From b918f1bc7f1ce463d6fbb6ebf3db36bd302bded8 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Sun, 1 Oct 2017 23:48:29 +0000
Subject: [PATCH] ASoC: rsnd: DVC kctrl sets once
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>
---
sound/soc/sh/rcar/dvc.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/sound/soc/sh/rcar/dvc.c b/sound/soc/sh/rcar/dvc.c
index 1743ade3cc555..bb22850e8fe6f 100644
--- a/sound/soc/sh/rcar/dvc.c
+++ b/sound/soc/sh/rcar/dvc.c
@@ -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;
}
--
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