[alsa-devel] [PATCH 08/18] ASoC: rsnd: disable SRC.out only when stop timing

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

Because SRC is connected to DMA and DMA want to keep dreq when stop
timing. This patch makes SRC stop SRC.out only when stop timing. And
it stops both SRC.out/SRC.in when quit timing

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
 sound/soc/sh/rcar/src.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index 513094e..3f6993f 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -665,13 +665,27 @@ static int _rsnd_src_stop_gen2(struct rsnd_mod *mod)
 {
 	rsnd_src_irq_disable_gen2(mod);
 
-	rsnd_mod_write(mod, SRC_CTRL, 0);
+	/*
+	 * stop SRC output only
+	 * see rsnd_src_quit_gen2
+	 */
+	rsnd_mod_write(mod, SRC_CTRL, 0x01);
 
 	rsnd_src_error_record_gen2(mod);
 
 	return rsnd_src_stop(mod);
 }
 
+static int rsnd_src_quit_gen2(struct rsnd_mod *mod,
+			      struct rsnd_dai_stream *io,
+			      struct rsnd_priv *priv)
+{
+	/* stop both out/in */
+	rsnd_mod_write(mod, SRC_CTRL, 0);
+
+	return 0;
+}
+
 static void __rsnd_src_interrupt_gen2(struct rsnd_mod *mod,
 				      struct rsnd_dai_stream *io)
 {
@@ -943,7 +957,7 @@ static struct rsnd_mod_ops rsnd_src_gen2_ops = {
 	.probe	= rsnd_src_probe_gen2,
 	.remove	= rsnd_src_remove_gen2,
 	.init	= rsnd_src_init_gen2,
-	.quit	= rsnd_src_quit,
+	.quit	= rsnd_src_quit_gen2,
 	.start	= rsnd_src_start_gen2,
 	.stop	= rsnd_src_stop_gen2,
 	.hw_params = rsnd_src_hw_params,
-- 
1.9.1