From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Same CTU 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 CTU,0 and CTU,1 kcontrol interfaces,
but these are same CTU. This is confusable.
This patch adds new flags and avoid such case.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@xxxxxxxxxxx>
---
v1 -> v2
- no change
sound/soc/sh/rcar/ctu.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/sound/soc/sh/rcar/ctu.c b/sound/soc/sh/rcar/ctu.c
index e7f53f4..1536d9d 100644
--- a/sound/soc/sh/rcar/ctu.c
+++ b/sound/soc/sh/rcar/ctu.c
@@ -81,8 +81,11 @@ struct rsnd_ctu {
struct rsnd_kctrl_cfg_m sv3;
struct rsnd_kctrl_cfg_s reset;
int channels;
+ u32 flags;
};
+#define KCTRL_INITIALIZEED (1 << 0)
+
#define rsnd_ctu_nr(priv) ((priv)->ctu_nr)
#define for_each_rsnd_ctu(pos, priv, i) \
for ((i) = 0; \
@@ -277,6 +280,9 @@ static int rsnd_ctu_pcm_new(struct rsnd_mod *mod,
struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
int ret;
+ if (rsnd_flags_has(ctu, KCTRL_INITIALIZEED))
+ return 0;
+
/* CTU Pass */
ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU Pass",
rsnd_kctrl_accept_anytime,
@@ -326,6 +332,8 @@ static int rsnd_ctu_pcm_new(struct rsnd_mod *mod,
rsnd_ctu_value_reset,
&ctu->reset, 1);
+ rsnd_flags_set(ctu, KCTRL_INITIALIZEED);
+
return ret;
}
--
1.9.1
