ASoC: rsnd: Fix parent SSI start/stop in multi-SSI mode

[ Upstream commit a09fb3f28a60ba3e928a1fa94b0456780800299d ]

The parent SSI of a multi-SSI setup must be fully setup, started and
stopped since it is also part of the playback/capture setup. So only
skip the SSI (as per commit 203cdf51f288 ("ASoC: rsnd: SSI parent cares
SWSP bit") and commit 597b046f0d99 ("ASoC: rsnd: control SSICR::EN
correctly")) if the SSI is parent outside of a multi-SSI setup.

Signed-off-by: Matthias Blankertz <matthias.blankertz@cetitec.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/20200415141017.384017-2-matthias.blankertz@cetitec.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index fc5d089..d51fb3a 100644 (file)
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -407,7 +407,7 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
         * We shouldn't exchange SWSP after running.
         * This means, parent needs to care it.
         */
-       if (rsnd_ssi_is_parent(mod, io))
+       if (rsnd_ssi_is_parent(mod, io) && !rsnd_ssi_multi_slaves(io))
                goto init_end;
 
        if (rsnd_io_is_play(io))
@@ -559,7 +559,7 @@ static int rsnd_ssi_start(struct rsnd_mod *mod,
         * EN is for data output.
         * SSI parent EN is not needed.
         */
-       if (rsnd_ssi_is_parent(mod, io))
+       if (rsnd_ssi_is_parent(mod, io) && !rsnd_ssi_multi_slaves(io))
                return 0;
 
        ssi->cr_en = EN;
@@ -582,7 +582,7 @@ static int rsnd_ssi_stop(struct rsnd_mod *mod,
        if (!rsnd_ssi_is_run_mods(mod, io))
                return 0;
 
-       if (rsnd_ssi_is_parent(mod, io))
+       if (rsnd_ssi_is_parent(mod, io) && !rsnd_ssi_multi_slaves(io))
                return 0;
 
        cr  =   ssi->cr_own     |
@@ -620,7 +620,7 @@ static int rsnd_ssi_irq(struct rsnd_mod *mod,
        if (rsnd_is_gen1(priv))
                return 0;
 
-       if (rsnd_ssi_is_parent(mod, io))
+       if (rsnd_ssi_is_parent(mod, io) && !rsnd_ssi_multi_slaves(io))
                return 0;
 
        if (!rsnd_ssi_is_run_mods(mod, io))