[PATCH 4.4.y] ASoC: rsnd: dvc: add rsnd_dvc_halt()

[PATCH 4.4.y] ASoC: rsnd: dvc: add rsnd_dvc_halt()

[Nhan Nguyen]

From: thongsyho <thong.ho.px@rvc.renesas.com>

commit f13edb8b281cf7fa762b14323238d6884df38792 upstream.

Based on datasheet process

Cc: stable@vger.kernel.org
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Thong Ho <thong.ho.px@rvc.renesas.com>
Signed-off-by: Nhan Nguyen <nhan.nguyen.yb@renesas.com>
---
 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 58f6909..3d2fbb1 100644
--- a/sound/soc/sh/rcar/dvc.c
+++ b/sound/soc/sh/rcar/dvc.c
@@ -70,6 +70,12 @@ static void rsnd_dvc_soft_reset(struct rsnd_mod *mod)
 	rsnd_mod_write(mod, DVC_SWRSR, 1);
 }
 
+static void rsnd_dvc_halt(struct rsnd_mod *mod)
+{
+	rsnd_mod_write(mod, DVC_DVUIR, 1);
+	rsnd_mod_write(mod, DVC_SWRSR, 0);
+}
+
 #define rsnd_dvc_initialize_lock(mod)	__rsnd_dvc_initialize_lock(mod, 1)
 #define rsnd_dvc_initialize_unlock(mod)	__rsnd_dvc_initialize_lock(mod, 0)
 static void __rsnd_dvc_initialize_lock(struct rsnd_mod *mod, u32 enable)
@@ -175,6 +181,8 @@ static int rsnd_dvc_quit(struct rsnd_mod *mod,
 			 struct rsnd_dai_stream *io,
 			 struct rsnd_priv *priv)
 {
+	rsnd_dvc_halt(mod);
+
 	rsnd_mod_power_off(mod);
 
 	return 0;
-- 
1.9.1