diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2019-12-02 16:58:34 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-12-09 18:35:00 +0000 |
| commit | 49df1e3925824cf44e590daac635974270185841 (patch) | |
| tree | d9a802210400a4dfd8772d42669af54aa6f02087 /sound/soc/sh | |
| parent | 3176f94c467cf89f74120c34a3ddd9aaf8941be2 (diff) | |
| download | linux-49df1e3925824cf44e590daac635974270185841.tar.bz2 | |
ASoC: rsnd: Calculate DALIGN inversion at run-time
There is no need to store the inverted DALIGN values in the table, as
they can easily be calculated at run-time. This also protects against
the introduction of inconsistencies between normal and inverted values
by a future table modification.
Reorder the two subexpressions in the AND check, to perform the least
expensive check first.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/20191202155834.22582-1-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sh')
| -rw-r--r-- | sound/soc/sh/rcar/core.c | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c index 399dc6e9bde5..d20f03dfdee6 100644 --- a/sound/soc/sh/rcar/core.c +++ b/sound/soc/sh/rcar/core.c @@ -376,20 +376,15 @@ u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io) */ u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) { - static const u32 dalign_values[8][2] = { - {0x76543210, 0x67452301}, - {0x00000032, 0x00000023}, - {0x00007654, 0x00006745}, - {0x00000076, 0x00000067}, - {0xfedcba98, 0xefcdab89}, - {0x000000ba, 0x000000ab}, - {0x0000fedc, 0x0000efcd}, - {0x000000fe, 0x000000ef}, + static const u32 dalign_values[8] = { + 0x76543210, 0x00000032, 0x00007654, 0x00000076, + 0xfedcba98, 0x000000ba, 0x0000fedc, 0x000000fe, }; - int id = 0, inv; + int id = 0; struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io); struct rsnd_mod *target; struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); + u32 dalign; /* * *Hardware* L/R and *Software* L/R are inverted for 16bit data. @@ -425,15 +420,15 @@ u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io) if (mod == ssiu) id = rsnd_mod_id_sub(mod); - /* Non target mod or non 16bit needs normal DALIGN */ - if ((snd_pcm_format_width(runtime->format) != 16) || - (mod != target)) - inv = 0; - /* Target mod needs inverted DALIGN when 16bit */ - else - inv = 1; + dalign = dalign_values[id]; + + if (mod == target && snd_pcm_format_width(runtime->format) == 16) { + /* Target mod needs inverted DALIGN when 16bit */ + dalign = (dalign & 0xf0f0f0f0) >> 4 | + (dalign & 0x0f0f0f0f) << 4; + } - return dalign_values[id][inv]; + return dalign; } u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod) |