[alsa-devel] [PATCH 12/12] ASoC: rsnd: add Multi channel support
Kuninori Morimoto
kuninori.morimoto.gx at renesas.com
Thu Dec 17 04:00:10 CET 2015
From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
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 at renesas.com>
---
.../devicetree/bindings/sound/renesas,rsnd.txt | 18 ++++
sound/soc/sh/rcar/core.c | 6 +-
sound/soc/sh/rcar/gen.c | 3 +
sound/soc/sh/rcar/rsnd.h | 15 ++-
sound/soc/sh/rcar/ssi.c | 114 ++++++++++++++++++++-
sound/soc/sh/rcar/ssiu.c | 55 ++++++++--
6 files changed, 194 insertions(+), 17 deletions(-)
diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 162e94c..8ee0fa9 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -308,3 +308,21 @@ Example: simple sound card for TDM
sound-dai = <&xxx>;
};
};
+
+Example: simple sound card for Multi channel
+
+&rcar_sound {
+ pinctrl-0 = <&sound_pins &sound_clk_pins>;
+ pinctrl-names = "default";
+
+ /* Single DAI */
+ #sound-dai-cells = <0>;
+
+ status = "okay";
+
+ rcar_sound,dai {
+ dai0 {
+ playback = <&ssi0 &ssi1 &ssi2 &src0 &dvc0>;
+ };
+ };
+};
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 7781cef..ca05a0a 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -215,7 +215,11 @@ int rsnd_get_slot_num(struct rsnd_dai_stream *io)
int rsnd_get_slot_width(struct rsnd_dai_stream *io)
{
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
- int chan = runtime->channels / rsnd_get_slot_num(io);
+ int chan = runtime->channels;
+
+ /* Multi channel Mode */
+ if (rsnd_ssi_multi_slaves(io))
+ chan /= rsnd_get_slot_num(io);
/* TDM Extend Mode needs 8ch */
if (chan == 6)
diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
index 7c5485e..c7aee9e 100644
--- a/sound/soc/sh/rcar/gen.c
+++ b/sound/soc/sh/rcar/gen.c
@@ -226,6 +226,9 @@ static int rsnd_gen2_probe(struct rsnd_priv *priv)
const static struct rsnd_regmap_field_conf conf_ssiu[] = {
RSND_GEN_S_REG(SSI_MODE0, 0x800),
RSND_GEN_S_REG(SSI_MODE1, 0x804),
+ RSND_GEN_S_REG(SSI_MODE2, 0x808),
+ RSND_GEN_S_REG(SSI_CONTROL, 0x810),
+
/* FIXME: it needs SSI_MODE2/3 in the future */
RSND_GEN_M_REG(SSI_BUSIF_MODE, 0x0, 0x80),
RSND_GEN_M_REG(SSI_BUSIF_ADINR, 0x4, 0x80),
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index f803e14..317dd79 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -47,6 +47,8 @@ enum rsnd_reg {
RSND_REG_SSI_MODE, /* Gen2 only */
RSND_REG_SSI_MODE0,
RSND_REG_SSI_MODE1,
+ RSND_REG_SSI_MODE2,
+ RSND_REG_SSI_CONTROL,
RSND_REG_SSI_CTRL, /* Gen2 only */
RSND_REG_SSI_BUSIF_MODE, /* Gen2 only */
RSND_REG_SSI_BUSIF_ADINR, /* Gen2 only */
@@ -181,7 +183,10 @@ enum rsnd_mod_type {
RSND_MOD_CTU,
RSND_MOD_CMD,
RSND_MOD_SRC,
- RSND_MOD_SSIP, /* SSI parent */
+ RSND_MOD_SSIM3, /* SSI multi 3 */
+ RSND_MOD_SSIM2, /* SSI multi 2 */
+ RSND_MOD_SSIM1, /* SSI multi 1 */
+ RSND_MOD_SSIP, /* SSI parent */
RSND_MOD_SSI,
RSND_MOD_SSIU,
RSND_MOD_MAX,
@@ -542,6 +547,7 @@ void rsnd_ssi_remove(struct rsnd_priv *priv);
struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id);
int rsnd_ssi_is_dma_mode(struct rsnd_mod *mod);
int rsnd_ssi_use_busif(struct rsnd_dai_stream *io);
+u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io);
#define rsnd_ssi_is_pin_sharing(io) \
__rsnd_ssi_is_pin_sharing(rsnd_io_to_mod_ssi(io))
@@ -549,10 +555,9 @@ int __rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod);
#define rsnd_ssi_of_node(priv) \
of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,ssi")
-#define rsnd_parse_connect_ssi(rdai, playback, capture) \
- rsnd_parse_connect_common(rdai, rsnd_ssi_mod_get, \
- rsnd_ssi_of_node(rsnd_rdai_to_priv(rdai)), \
- playback, capture)
+void rsnd_parse_connect_ssi(struct rsnd_dai *rdai,
+ struct device_node *playback,
+ struct device_node *capture);
/*
* R-Car SSIU
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 0b91692..7db05fd 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -96,6 +96,7 @@ struct rsnd_ssi {
#define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod)
#define rsnd_ssi_mode_flags(p) ((p)->flags)
#define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io))
+#define rsnd_ssi_is_multi_slave(ssi, io) ((mod) != rsnd_io_to_mod_ssi(io))
int rsnd_ssi_use_busif(struct rsnd_dai_stream *io)
{
@@ -171,6 +172,41 @@ static int rsnd_ssi_irq_disable(struct rsnd_mod *ssi_mod)
return 0;
}
+u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io)
+{
+ struct rsnd_mod *mod;
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ struct rsnd_priv *priv = rsnd_io_to_priv(io);
+ struct device *dev = rsnd_priv_to_dev(priv);
+ enum rsnd_mod_type types[] = {
+ RSND_MOD_SSIM1,
+ RSND_MOD_SSIM2,
+ RSND_MOD_SSIM3,
+ };
+ int i, mask;
+
+ switch (runtime->channels) {
+ case 2: /* Multi channel is not needed for Stereo */
+ return 0;
+ case 6:
+ break;
+ default:
+ dev_err(dev, "unsupported channel\n");
+ return 0;
+ }
+
+ mask = 0;
+ for (i = 0; i < ARRAY_SIZE(types); i++) {
+ mod = rsnd_io_to_mod(io, types[i]);
+ if (!mod)
+ continue;
+
+ mask |= 1 << rsnd_mod_id(mod);
+ }
+
+ return mask;
+}
+
static int rsnd_ssi_master_clk_start(struct rsnd_ssi *ssi,
struct rsnd_dai_stream *io)
{
@@ -194,6 +230,9 @@ static int rsnd_ssi_master_clk_start(struct rsnd_ssi *ssi,
if (ssi_parent_mod && !rsnd_ssi_is_parent(mod, io))
return 0;
+ if (rsnd_ssi_is_multi_slave(mod, io))
+ return 0;
+
if (ssi->usrcnt > 1) {
if (ssi->rate != rate) {
dev_err(dev, "SSI parent/child should use same rate\n");
@@ -437,8 +476,14 @@ static int __rsnd_ssi_start(struct rsnd_mod *mod,
cr = ssi->cr_own |
ssi->cr_clk |
- ssi->cr_mode |
- EN;
+ ssi->cr_mode;
+
+ /*
+ * EN will be set via SSIU :: SSI_CONTROL
+ * if Multi channel mode
+ */
+ if (!rsnd_ssi_multi_slaves(io))
+ cr |= EN;
rsnd_mod_write(mod, SSICR, cr);
rsnd_mod_write(mod, SSIWSR, ssi->wsr);
@@ -609,6 +654,13 @@ static int rsnd_ssi_common_probe(struct rsnd_mod *mod,
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
int ret;
+ /*
+ * SSIP/SSIU/IRQ are not needed on
+ * SSI Multi slaves
+ */
+ if (rsnd_ssi_is_multi_slave(mod, io))
+ return 0;
+
rsnd_ssi_parent_attach(mod, io, priv);
ret = rsnd_ssiu_attach(io, mod);
@@ -641,6 +693,13 @@ static int rsnd_ssi_dma_probe(struct rsnd_mod *mod,
int dma_id = 0; /* not needed */
int ret;
+ /*
+ * SSIP/SSIU/IRQ/DMA are not needed on
+ * SSI Multi slaves
+ */
+ if (rsnd_ssi_is_multi_slave(mod, io))
+ return 0;
+
ret = rsnd_ssi_common_probe(mod, io, priv);
if (ret)
return ret;
@@ -732,6 +791,57 @@ static struct rsnd_mod_ops rsnd_ssi_non_ops = {
/*
* ssi mod function
*/
+static void rsnd_ssi_connect(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io)
+{
+ struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
+ enum rsnd_mod_type types[] = {
+ RSND_MOD_SSI,
+ RSND_MOD_SSIM1,
+ RSND_MOD_SSIM2,
+ RSND_MOD_SSIM3,
+ };
+ enum rsnd_mod_type type;
+ int i;
+
+ /* try SSI -> SSIM1 -> SSIM2 -> SSIM3 */
+ for (i = 0; i < ARRAY_SIZE(types); i++) {
+ type = types[i];
+ if (!rsnd_io_to_mod(io, type)) {
+ rsnd_dai_connect(mod, io, type);
+ rsnd_set_slot(rdai, 2 * (i + 1), (i + 1));
+ return;
+ }
+ }
+}
+
+void rsnd_parse_connect_ssi(struct rsnd_dai *rdai,
+ struct device_node *playback,
+ struct device_node *capture)
+{
+ struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
+ struct device_node *node;
+ struct device_node *np;
+ struct rsnd_mod *mod;
+ int i;
+
+ node = rsnd_ssi_of_node(priv);
+ if (!node)
+ return;
+
+ i = 0;
+ for_each_child_of_node(node, np) {
+ mod = rsnd_ssi_mod_get(priv, i);
+ if (np == playback)
+ rsnd_ssi_connect(mod, &rdai->playback);
+ if (np == capture)
+ rsnd_ssi_connect(mod, &rdai->capture);
+ i++;
+ }
+
+ of_node_put(node);
+}
+
struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id)
{
if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv)))
diff --git a/sound/soc/sh/rcar/ssiu.c b/sound/soc/sh/rcar/ssiu.c
index 7ae05a7..3fe9e08 100644
--- a/sound/soc/sh/rcar/ssiu.c
+++ b/sound/soc/sh/rcar/ssiu.c
@@ -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;
}
--
1.9.1
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