linux-kernel - [PATCH linux-next v2 1/1] ASoC: rsnd: ssiu: clear SSI

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Date:   Tue, 28 Nov 2017 16:05:13 +0900
From:   Jiada Wang <jiada_wang@...tor.com>
To:     <lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
        <tiwai@...e.com>, <kuninori.morimoto.gx@...esas.com>
CC:     <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH linux-next v2 1/1] ASoC: rsnd: ssiu: clear SSI_MODE for non TDM Extended modes

register SSI_MODE is set when SSI works in TDM Extended,
but it isn't reset when SSI starts to work in other modes,
thus causes issues.

This patch clearss SSI_MODE register when SSI works in modes
other than TDM Extended.

Fixes: 186fadc132f0 ("ASoC: rsnd: add TDM Extend Mode support")

Signed-off-by: Jiada Wang <jiada_wang@...tor.com>
---
 sound/soc/sh/rcar/ssiu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sh/rcar/ssiu.c b/sound/soc/sh/rcar/ssiu.c
index 4d94875..6ff8a36 100644
--- a/sound/soc/sh/rcar/ssiu.c
+++ b/sound/soc/sh/rcar/ssiu.c
@@ -125,6 +125,7 @@ static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
 {
 	int hdmi = rsnd_ssi_hdmi_port(io);
 	int ret;
+	u32 mode = 0;
 
 	ret = rsnd_ssiu_init(mod, io, priv);
 	if (ret < 0)
@@ -136,9 +137,11 @@ static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
 		 * see
 		 *	rsnd_ssi_config_init()
 		 */
-		rsnd_mod_write(mod, SSI_MODE, 0x1);
+		mode = 0x1;
 	}
 
+	rsnd_mod_write(mod, SSI_MODE, mode);
+
 	if (rsnd_ssi_use_busif(io)) {
 		rsnd_mod_write(mod, SSI_BUSIF_ADINR,
 			       rsnd_get_adinr_bit(mod, io) |
-- 
2.9.3