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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2017-05-16 01:51:41 +0000
committerMark Brown <broonie@kernel.org>2017-05-17 10:49:45 +0100
commit90431eb49bff6d79814cbf0c96e13597ad53095c (patch)
tree7a2cfea7a451f35924a87020654943a2a5cd355c /sound/soc/sh/rcar/core.c
parent2ea659a9ef488125eb46da6eb571de5eae5c43f6 (diff)
ASoC: rsnd: don't use PDTA bit for 24bit on SSI
Current SSI uses PDTA bit which indicates data that Input/Output data are Right-Aligned. But, 24bit sound should be Left-Aligned in this HW. Because Linux is using Right-Aligned data, and HW uses Left-Aligned data, current 24bit data is missing lower 8bit. To fix this issue, this patch removes PDTA bit, and shift 8bit in necessary module Reported-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sh/rcar/core.c')
-rw-r--r--sound/soc/sh/rcar/core.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 1744015408c3..8c1f4e2e0c4f 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -343,6 +343,57 @@ u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
return 0x76543210;
}
+u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
+{
+ enum rsnd_mod_type playback_mods[] = {
+ RSND_MOD_SRC,
+ RSND_MOD_CMD,
+ RSND_MOD_SSIU,
+ };
+ enum rsnd_mod_type capture_mods[] = {
+ RSND_MOD_CMD,
+ RSND_MOD_SRC,
+ RSND_MOD_SSIU,
+ };
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ struct rsnd_mod *tmod = NULL;
+ enum rsnd_mod_type *mods =
+ rsnd_io_is_play(io) ?
+ playback_mods : capture_mods;
+ int i;
+
+ /*
+ * This is needed for 24bit data
+ * We need to shift 8bit
+ *
+ * Linux 24bit data is located as 0x00******
+ * HW 24bit data is located as 0x******00
+ *
+ */
+ switch (runtime->sample_bits) {
+ case 16:
+ return 0;
+ case 32:
+ break;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
+ tmod = rsnd_io_to_mod(io, mods[i]);
+ if (tmod)
+ break;
+ }
+
+ if (tmod != mod)
+ return 0;
+
+ if (rsnd_io_is_play(io))
+ return (0 << 20) | /* shift to Left */
+ (8 << 16); /* 8bit */
+ else
+ return (1 << 20) | /* shift to Right */
+ (8 << 16); /* 8bit */
+}
+
/*
* rsnd_dai functions
*/