ASoC: rsnd: SSI PIO adjust to 24bit mode

commit 90431eb49bff ("ASoC: rsnd: don't use PDTA bit for 24bit on SSI")
fixups 24bit mode data alignment, but PIO was not cared.
This patch fixes PIO mode 24bit data alignment

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 9 insertions, 2 deletions

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index c224695c1484..91e5c07911b4 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -550,6 +550,13 @@ static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
                 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
                 u32 *buf = (u32 *)(runtime->dma_area +
                                    rsnd_dai_pointer_offset(io, 0));
+                int shift = 0;
+
+                switch (runtime->sample_bits) {
+                case 32:
+                        shift = 8;
+                        break;
+                }
 
                 /*
                  * 8/16/32 data can be assesse to TDR/RDR register
@@ -557,9 +564,9 @@ static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
                  * see rsnd_ssi_init()
                  */
                 if (rsnd_io_is_play(io))
-                        rsnd_mod_write(mod, SSITDR, *buf);
+                        rsnd_mod_write(mod, SSITDR, (*buf) << shift);
                 else
-                        *buf = rsnd_mod_read(mod, SSIRDR);
+                        *buf = (rsnd_mod_read(mod, SSIRDR) >> shift);
 
                 elapsed = rsnd_dai_pointer_update(io, sizeof(*buf));
         }