[alsa-devel] [PATCH 14/14] ASoC: rsnd: add TDM Extend Mode support
Kuninori Morimoto
kuninori.morimoto.gx at renesas.com
Mon Nov 30 09:54:03 CET 2015
From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
Renesas R-Car can out TDM by
1) 6ch x 1 DAI as TDM Extend Mode
2) 2ch x 4 x 1 DAI as TDM split Mode
3) 2ch x 3 DAI or
2ch x 4 DAI as TDM Multichannel Mode
This patch adds 1) TDM Extend Mode. Because of HW design,
this 6ch data will be outputed via 8ch data width.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
sound/soc/sh/rcar/core.c | 30 ++++++++++++++++++++++++++----
sound/soc/sh/rcar/gen.c | 1 +
sound/soc/sh/rcar/rsnd.h | 1 +
sound/soc/sh/rcar/ssi.c | 18 +++++++++++++++++-
sound/soc/sh/rcar/ssiu.c | 9 +++++++++
5 files changed, 54 insertions(+), 5 deletions(-)
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 7d364d7..b187a89 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -247,9 +247,9 @@ u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
u32 rsnd_get_adinr_chan(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
- struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
struct device *dev = rsnd_priv_to_dev(priv);
- u32 chan = runtime->channels;
+ struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
+ u32 chan = rsnd_get_slot_rdai(rdai);
switch (chan) {
case 1:
@@ -569,9 +569,31 @@ static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
return 0;
}
+static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
+ u32 tx_mask, u32 rx_mask,
+ int slots, int slot_width)
+{
+ struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
+ struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
+ struct device *dev = rsnd_priv_to_dev(priv);
+
+ switch (slots) {
+ case 6:
+ /* TDM Extend Mode */
+ rdai->slots = slots;
+ break;
+ default:
+ dev_err(dev, "unsupported TDM slots (%d)\n", slots);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
.trigger = rsnd_soc_dai_trigger,
.set_fmt = rsnd_soc_dai_set_fmt,
+ .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
};
static int rsnd_dai_probe(struct rsnd_priv *priv)
@@ -626,7 +648,7 @@ static int rsnd_dai_probe(struct rsnd_priv *priv)
drv->playback.rates = RSND_RATES;
drv->playback.formats = RSND_FMTS;
drv->playback.channels_min = 2;
- drv->playback.channels_max = 2;
+ drv->playback.channels_max = 6;
drv->playback.stream_name = rdai->playback.name;
snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
@@ -634,7 +656,7 @@ static int rsnd_dai_probe(struct rsnd_priv *priv)
drv->capture.rates = RSND_RATES;
drv->capture.formats = RSND_FMTS;
drv->capture.channels_min = 2;
- drv->capture.channels_max = 2;
+ drv->capture.channels_max = 6;
drv->capture.stream_name = rdai->capture.name;
rdai->playback.rdai = rdai;
diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
index 2151aa5..50fc730 100644
--- a/sound/soc/sh/rcar/gen.c
+++ b/sound/soc/sh/rcar/gen.c
@@ -230,6 +230,7 @@ static int rsnd_gen2_probe(struct rsnd_priv *priv)
RSND_GEN_M_REG(SSI_BUSIF_MODE, 0x0, 0x80),
RSND_GEN_M_REG(SSI_BUSIF_ADINR, 0x4, 0x80),
RSND_GEN_M_REG(SSI_BUSIF_DALIGN,0x8, 0x80),
+ RSND_GEN_M_REG(SSI_MODE, 0xc, 0x80),
RSND_GEN_M_REG(SSI_CTRL, 0x10, 0x80),
RSND_GEN_M_REG(SSI_INT_ENABLE, 0x18, 0x80),
};
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 2111bf3..970e130 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -44,6 +44,7 @@
*/
enum rsnd_reg {
/* SCU (SRC/SSIU/MIX/CTU/DVC) */
+ RSND_REG_SSI_MODE, /* Gen2 only */
RSND_REG_SSI_MODE0,
RSND_REG_SSI_MODE1,
RSND_REG_SSI_CTRL, /* Gen2 only */
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 44e9141..628739f 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -24,7 +24,9 @@
#define OIEN (1 << 26) /* Overflow Interrupt Enable */
#define IIEN (1 << 25) /* Idle Mode Interrupt Enable */
#define DIEN (1 << 24) /* Data Interrupt Enable */
-
+#define CHNL_4 (1 << 22) /* Channels */
+#define CHNL_6 (2 << 22) /* Channels */
+#define CHNL_8 (3 << 22) /* Channels */
#define DWL_8 (0 << 19) /* Data Word Length */
#define DWL_16 (1 << 19) /* Data Word Length */
#define DWL_18 (2 << 19) /* Data Word Length */
@@ -57,6 +59,7 @@
* SSIWSR
*/
#define CONT (1 << 8) /* WS Continue Function */
+#define WS_MODE (1 << 0) /* WS Mode */
#define SSI_NAME "ssi"
@@ -261,6 +264,7 @@ static int rsnd_ssi_config_init(struct rsnd_ssi *ssi,
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
u32 cr_own;
u32 cr_mode;
+ u32 wsr;
/*
* always use 32bit system word.
@@ -297,8 +301,20 @@ static int rsnd_ssi_config_init(struct rsnd_ssi *ssi,
cr_mode = DIEN; /* PIO : enable Data interrupt */
}
+ /*
+ * TDM Extend Mode
+ * see
+ * rsnd_ssiu_init_gen2()
+ */
+ wsr = ssi->wsr;
+ if (rsnd_get_slot_runtime(io) >= 6) {
+ wsr |= WS_MODE;
+ cr_own |= CHNL_8;
+ }
+
ssi->cr_own = cr_own;
ssi->cr_mode = cr_mode;
+ ssi->wsr = wsr;
return 0;
}
diff --git a/sound/soc/sh/rcar/ssiu.c b/sound/soc/sh/rcar/ssiu.c
index 6120b0a..3265501 100644
--- a/sound/soc/sh/rcar/ssiu.c
+++ b/sound/soc/sh/rcar/ssiu.c
@@ -78,6 +78,15 @@ static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
if (ret < 0)
return ret;
+ if (rsnd_get_slot_runtime(io) >= 6) {
+ /*
+ * TDM Extend Mode
+ * see
+ * rsnd_ssi_config_init()
+ */
+ rsnd_mod_write(mod, SSI_MODE, 0x1);
+ }
+
if (rsnd_ssi_use_busif(io)) {
u32 val = rsnd_get_dalign(mod, io);
--
1.9.1
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