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ASoC: rsnd: add Multi channel support

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This patch adds Multi channel support on Renesas R-Car sound.
This patch is tested on Salvator-X board, but it can't use
Multi channel, because supported format is different between
codec chip and R-Car.
Thus, it was tested on board which doesn't mount codec chip,
with oscilloscope.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto
2015-12-17 03:00:10 +00:00
committed by Mark Brown
parent 44bf5361e2
commit b4c83b1715
6 changed files with 194 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
sound/soc/sh/rcar/ssiu.c
View File

@@ -27,8 +27,11 @@ static int rsnd_ssiu_init(struct rsnd_mod *mod,
struct rsnd_priv *priv)
{
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
u32 multi_ssi_slaves = rsnd_ssi_multi_slaves(io);
int use_busif = rsnd_ssi_use_busif(io);
int id = rsnd_mod_id(mod);
u32 mask1, val1;
u32 mask2, val2;
/*
* SSI_MODE0
@@ -38,6 +41,9 @@ static int rsnd_ssiu_init(struct rsnd_mod *mod,
/*
* SSI_MODE1
*/
mask1 = (1 << 4) | (1 << 20); /* mask sync bit */
mask2 = (1 << 4); /* mask sync bit */
val1 = val2 = 0;
if (rsnd_ssi_is_pin_sharing(io)) {
int shift = -1;
@@ -51,15 +57,36 @@ static int rsnd_ssiu_init(struct rsnd_mod *mod,
case 4:
shift = 16;
break;
default:
return -EINVAL;
}
if (shift >= 0)
rsnd_mod_bset(mod, SSI_MODE1,
0x3 << shift,
rsnd_rdai_is_clk_master(rdai) ?
0x2 << shift : 0x1 << shift);
mask1 |= 0x3 << shift;
val1 = rsnd_rdai_is_clk_master(rdai) ?
0x2 << shift : 0x1 << shift;
} else if (multi_ssi_slaves) {
mask2 |= 0x00000007;
mask1 |= 0x0000000f;
switch (multi_ssi_slaves) {
case 0x0206: /* SSI0/1/2/9 */
val2 = (1 << 4) | /* SSI0129 sync */
rsnd_rdai_is_clk_master(rdai) ? 0x2 : 0x1;
/* fall through */
case 0x0006: /* SSI0/1/2 */
val1 = rsnd_rdai_is_clk_master(rdai) ?
0xa : 0x5;
if (!val2) /* SSI012 sync */
val1 |= (1 << 4);
}
}
rsnd_mod_bset(mod, SSI_MODE1, mask1, val1);
rsnd_mod_bset(mod, SSI_MODE2, mask2, val2);
return 0;
}
@@ -104,8 +131,13 @@ static int rsnd_ssiu_start_gen2(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
if (rsnd_ssi_use_busif(io))
rsnd_mod_write(mod, SSI_CTRL, 0x1);
if (!rsnd_ssi_use_busif(io))
return 0;
rsnd_mod_write(mod, SSI_CTRL, 0x1);
if (rsnd_ssi_multi_slaves(io))
rsnd_mod_write(mod, SSI_CONTROL, 0x1);
return 0;
}
@@ -114,8 +146,13 @@ static int rsnd_ssiu_stop_gen2(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
if (rsnd_ssi_use_busif(io))
rsnd_mod_write(mod, SSI_CTRL, 0);
if (!rsnd_ssi_use_busif(io))
return 0;
rsnd_mod_write(mod, SSI_CTRL, 0);
if (rsnd_ssi_multi_slaves(io))
rsnd_mod_write(mod, SSI_CONTROL, 0);
return 0;
}