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Subject[PATCH v4 3/4] ASoC: simple-card: add multi-CODECs in DT
This patch allows many CODECs per link to be defined in the device tree.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
---
.../devicetree/bindings/sound/simple-card.txt | 20 ++----
sound/soc/generic/simple-card.c | 81 ++++++++++++----------
2 files changed, 53 insertions(+), 48 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/simple-card.txt b/Documentation/devicetree/bindings/sound/simple-card.txt
index c3cba60..debe35c 100644
--- a/Documentation/devicetree/bindings/sound/simple-card.txt
+++ b/Documentation/devicetree/bindings/sound/simple-card.txt
@@ -65,7 +65,10 @@ properties should also be placed in the codec node if needed.

Required CPU/CODEC subnodes properties:

-- sound-dai : phandle and port of CPU/CODEC
+either
+ - sound-dai : phandle and port of CPU/CODEC
+or
+ - sound-dais : list of phandle and port of CODECs

Optional CPU/CODEC subnodes properties:

@@ -119,7 +122,7 @@ sh_fsi2: sh_fsi2@ec230000 {
interrupts = <0 146 0x4>;
};

-Example 2 - many DAI links:
+Example 2 - many DAI links and multi-CODECs:

sound {
compatible = "simple-audio-card";
@@ -135,21 +138,12 @@ sound {
};
};

- simple-audio-card,dai-link@1 { /* S/PDIF - HDMI */
+ simple-audio-card,dai-link@1 { /* S/PDIF - HDMI & S/PDIF */
cpu {
sound-dai = <&audio1 1>;
};
codec {
- sound-dai = <&tda998x 1>;
- };
- };
-
- simple-audio-card,dai-link@2 { /* S/PDIF - S/PDIF */
- cpu {
- sound-dai = <&audio1 1>;
- };
- codec {
- sound-dai = <&spdif_codec>;
+ sound-dais = <&tda998x 1>, <&spdif_codec>;
};
};
};
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index ece22d5..61f9500 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -172,34 +172,12 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
static int
asoc_simple_card_sub_parse_of(struct device_node *np,
struct asoc_simple_dai *dai,
- struct device_node **p_node,
- const char **name,
- int *args_count)
+ struct device_node *dai_np)
{
- struct of_phandle_args args;
struct clk *clk;
u32 val;
int ret;

- /*
- * Get node via "sound-dai = <&phandle port>"
- * it will be used as xxx_of_node on soc_bind_dai_link()
- */
- ret = of_parse_phandle_with_args(np, "sound-dai",
- "#sound-dai-cells", 0, &args);
- if (ret)
- return ret;
-
- *p_node = args.np;
-
- if (args_count)
- *args_count = args.args_count;
-
- /* Get dai->name */
- ret = snd_soc_of_get_dai_name(np, name);
- if (ret < 0)
- return ret;
-
/* Parse TDM slot */
ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
if (ret)
@@ -222,7 +200,7 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
dai->sysclk = val;
} else {
- clk = of_clk_get(args.np, 0);
+ clk = of_clk_get(dai_np, 0);
if (!IS_ERR(clk))
dai->sysclk = clk_get_rate(clk);
}
@@ -286,10 +264,12 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
struct device_node *cpu = NULL;
struct device_node *codec = NULL;
+ struct snd_soc_dai_link_component *component;
+ struct of_phandle_args args;
char *name;
char prop[128];
char *prefix = "";
- int ret, cpu_args;
+ int ret, cpu_args, i;

/* For single DAI link & old style of DT node */
if (is_top_level_node)
@@ -312,16 +292,30 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
if (ret < 0)
goto dai_link_of_err;

+ /* Get the CPU node and name */
+ ret = of_parse_phandle_with_args(cpu, "sound-dai",
+ "#sound-dai-cells", 0, &args);
+ if (ret)
+ goto dai_link_of_err;
+ dai_link->cpu_of_node = args.np;
+ cpu_args = args.args_count;
+
+ ret = snd_soc_of_get_dai_name(cpu, &dai_link->cpu_dai_name);
+ if (ret < 0)
+ goto dai_link_of_err;
+
ret = asoc_simple_card_sub_parse_of(cpu, &dai_props->cpu_dai,
- &dai_link->cpu_of_node,
- &dai_link->cpu_dai_name,
- &cpu_args);
+ dai_link->cpu_of_node);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ /* Get the node and name of the CODEC(s) */
+ ret = snd_soc_of_get_dai_link_codecs(dev, codec, dai_link);
if (ret < 0)
goto dai_link_of_err;

ret = asoc_simple_card_sub_parse_of(codec, &dai_props->codec_dai,
- &dai_link->codec_of_node,
- &dai_link->codec_dai_name, NULL);
+ dai_link->codecs[0].of_node);
if (ret < 0)
goto dai_link_of_err;

@@ -336,10 +330,10 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
/* DAI link name is created from CPU/CODEC dai name */
name = devm_kzalloc(dev,
strlen(dai_link->cpu_dai_name) +
- strlen(dai_link->codec_dai_name) + 2,
+ strlen(dai_link->codecs[0].dai_name) + 2,
GFP_KERNEL);
sprintf(name, "%s-%s", dai_link->cpu_dai_name,
- dai_link->codec_dai_name);
+ dai_link->codecs[0].dai_name);
dai_link->name = dai_link->stream_name = name;
dai_link->ops = &asoc_simple_card_ops;
dai_link->init = asoc_simple_card_dai_init;
@@ -350,7 +344,7 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
dai_props->cpu_dai.fmt,
dai_props->cpu_dai.sysclk);
dev_dbg(dev, "\tcodec : %s / %04x / %d\n",
- dai_link->codec_dai_name,
+ dai_link->codecs[0].dai_name,
dai_props->codec_dai.fmt,
dai_props->codec_dai.sysclk);

@@ -365,8 +359,18 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
*/
if (!cpu_args)
dai_link->cpu_dai_name = NULL;
+ goto out;

dai_link_of_err:
+ for (i = 0, component = dai_link->codecs;
+ i < dai_link->num_codecs;
+ i++, component++) {
+ if (!component->of_node)
+ break;
+ of_node_put(component->of_node);
+ component->of_node = NULL;
+ }
+out:
of_node_put(cpu);
of_node_put(codec);

@@ -456,13 +460,20 @@ static int asoc_simple_card_unref(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct snd_soc_dai_link *dai_link;
- int num_links;
+ struct snd_soc_dai_link_component *component;
+ int num_links, i;

for (num_links = 0, dai_link = card->dai_link;
num_links < card->num_links;
num_links++, dai_link++) {
of_node_put(dai_link->cpu_of_node);
- of_node_put(dai_link->codec_of_node);
+ for (i = 0, component = dai_link->codecs;
+ i < dai_link->num_codecs;
+ i++, component++) {
+ if (!component->of_node)
+ break;
+ of_node_put(component->of_node);
+ }
}
return 0;
}
--
2.1.3


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