[alsa-devel] [PATCH] ASoC: rsnd: SSI PIO adjust to 24bit mode

[Kuninori Morimoto]

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

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 at renesas.com>
---
> Mark, this is for mark/fix/rcar branch, not mark/topic/rcar

 sound/soc/sh/rcar/ssi.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 57daac0..0822ae0b 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -567,6 +567,13 @@ 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
@@ -574,9 +581,9 @@ 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));
 	}
-- 
1.9.1