ASoC: rsnd: remove 16ch support for now

R-Car Gen3 sound device can use TDM 16ch, but its usage is very
limited. It is not yet supported.
Let's remove unexpected/unsupported channel settings for now.
This patch makes xx_ADINR register settings sanity without
runtime check.

R-Car Gen3 datasheet

40.4.7 Note on Usage of the SSIU Module
When an SSIU module is used in "TDM-16ch mode",
only the transfer with the external memory is available.

Reported-by: Nguyen Viet Dung <dung.nguyen.aj@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 3 insertions, 4 deletions

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 3f2ced26ed37..7fa40fcad59e 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -726,7 +726,6 @@ static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
         case 2:
         case 6:
         case 8:
-        case 16:
                 /* TDM Extend Mode */
                 rsnd_rdai_channels_set(rdai, slots);
                 rsnd_rdai_ssi_lane_set(rdai, 1);
@@ -740,7 +739,7 @@ static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
 }
 
 static unsigned int rsnd_soc_hw_channels_list[] = {
-        2, 6, 8, 16,
+        2, 6, 8,
 };
 
 static unsigned int rsnd_soc_hw_rate_list[] = {
@@ -1017,7 +1016,7 @@ static void __rsnd_dai_probe(struct rsnd_priv *priv,
         drv->playback.rates             = RSND_RATES;
         drv->playback.formats           = RSND_FMTS;
         drv->playback.channels_min      = 2;
-        drv->playback.channels_max      = 16;
+        drv->playback.channels_max      = 8;
         drv->playback.stream_name       = rdai->playback.name;
 
         snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
@@ -1025,7 +1024,7 @@ static void __rsnd_dai_probe(struct rsnd_priv *priv,
         drv->capture.rates              = RSND_RATES;
         drv->capture.formats            = RSND_FMTS;
         drv->capture.channels_min       = 2;
-        drv->capture.channels_max       = 16;
+        drv->capture.channels_max       = 8;
         drv->capture.stream_name        = rdai->capture.name;
 
         rdai->playback.rdai             = rdai;