[alsa-devel] [PATCH] ASoC: rsnd: enable TDM settings for SSI parent

[Kuninori Morimoto]

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

Some SSIs are sharing each pins (= WS/CLK pin for playback/capture).
Then, SSI parent needs control WS/CLK setting for SSI slave.
In such case, SSI parent needs TDM settings if SSI slave is working as
TDM mode. But it is not cared in current driver.
It can't capture TDM sound without this patch if SSIs were pin sharing.
This patch is tested on R-Car H3 ulcb-kf board, SSI3/4 with TDM sound.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
 sound/soc/sh/rcar/ssi.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 3adcc4f..b42a0e0 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -400,6 +400,17 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
 		cr_own |= DEL;
 
 	/*
+	 * TDM Mode
+	 * see
+	 *	rsnd_ssiu_init_gen2()
+	 */
+	wsr = ssi->wsr;
+	if (is_tdm) {
+		wsr	|= WS_MODE;
+		cr_own	|= CHNL_8;
+	}
+
+	/*
 	 * We shouldn't exchange SWSP after running.
 	 * This means, parent needs to care it.
 	 */
@@ -429,16 +440,6 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
 		cr_mode = DIEN;		/* PIO : enable Data interrupt */
 	}
 
-	/*
-	 * TDM Extend Mode
-	 * see
-	 *	rsnd_ssiu_init_gen2()
-	 */
-	wsr = ssi->wsr;
-	if (is_tdm) {
-		wsr	|= WS_MODE;
-		cr_own	|= CHNL_8;
-	}
 init_end:
 	ssi->cr_own	= cr_own;
 	ssi->cr_mode	= cr_mode;
-- 
2.7.4