Commit bad318cd authored by Mark Brown's avatar Mark Brown

Merge remote-tracking branch 'asoc/topic/simple' into asoc-next

parents c61e9e8c 6a91a17b
......@@ -23,6 +23,11 @@ Optional properties:
Required subnodes:
- simple-audio-card,dai-link : container for the CPU and CODEC sub-nodes
This container may be omitted when the
card has only one DAI link.
See the examples.
- simple-audio-card,cpu : CPU sub-node
- simple-audio-card,codec : CODEC sub-node
......@@ -49,7 +54,7 @@ Note:
CPU and CODEC sides as we need to keep the settings identical for both ends
of the link.
Example:
Example 1 - single DAI link:
sound {
compatible = "simple-audio-card";
......@@ -94,3 +99,38 @@ sh_fsi2: sh_fsi2@ec230000 {
interrupt-parent = <&gic>;
interrupts = <0 146 0x4>;
};
Example 2 - many DAI links:
sound {
compatible = "simple-audio-card";
simple-audio-card,name = "Cubox Audio";
simple-audio-card,format = "i2s";
simple-audio-card,dai-link@0 { /* I2S - HDMI */
simple-audio-card,cpu {
sound-dai = <&audio1 0>;
};
simple-audio-card,codec {
sound-dai = <&tda998x 0>;
};
};
simple-audio-card,dai-link@1 { /* S/PDIF - HDMI */
simple-audio-card,cpu {
sound-dai = <&audio1 1>;
};
simple-audio-card,codec {
sound-dai = <&tda998x 1>;
};
};
simple-audio-card,dai-link@2 { /* S/PDIF - S/PDIF */
simple-audio-card,cpu {
sound-dai = <&audio1 1>;
};
simple-audio-card,codec {
sound-dai = <&spdif_codec>;
};
};
};
......@@ -20,9 +20,11 @@
struct simple_card_data {
struct snd_soc_card snd_card;
struct simple_dai_props {
struct asoc_simple_dai cpu_dai;
struct asoc_simple_dai codec_dai;
struct snd_soc_dai_link snd_link;
} *dai_props;
struct snd_soc_dai_link dai_link[]; /* dynamically allocated */
};
static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
......@@ -68,13 +70,16 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
snd_soc_card_get_drvdata(rtd->card);
struct snd_soc_dai *codec = rtd->codec_dai;
struct snd_soc_dai *cpu = rtd->cpu_dai;
int ret;
struct simple_dai_props *dai_props;
int num, ret;
ret = __asoc_simple_card_dai_init(codec, &priv->codec_dai);
num = rtd - rtd->card->rtd;
dai_props = &priv->dai_props[num];
ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai);
if (ret < 0)
return ret;
ret = __asoc_simple_card_dai_init(cpu, &priv->cpu_dai);
ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai);
if (ret < 0)
return ret;
......@@ -146,13 +151,47 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
return 0;
}
static int simple_card_cpu_codec_of(struct device_node *node,
int daifmt,
struct snd_soc_dai_link *dai_link,
struct simple_dai_props *dai_props)
{
struct device_node *np;
int ret;
/* CPU sub-node */
ret = -EINVAL;
np = of_get_child_by_name(node, "simple-audio-card,cpu");
if (np) {
ret = asoc_simple_card_sub_parse_of(np, daifmt,
&dai_props->cpu_dai,
&dai_link->cpu_of_node,
&dai_link->cpu_dai_name);
of_node_put(np);
}
if (ret < 0)
return ret;
/* CODEC sub-node */
ret = -EINVAL;
np = of_get_child_by_name(node, "simple-audio-card,codec");
if (np) {
ret = asoc_simple_card_sub_parse_of(np, daifmt,
&dai_props->codec_dai,
&dai_link->codec_of_node,
&dai_link->codec_dai_name);
of_node_put(np);
}
return ret;
}
static int asoc_simple_card_parse_of(struct device_node *node,
struct simple_card_data *priv,
struct device *dev)
struct device *dev,
int multi)
{
struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link;
struct asoc_simple_dai *codec_dai = &priv->codec_dai;
struct asoc_simple_dai *cpu_dai = &priv->cpu_dai;
struct simple_dai_props *dai_props = priv->dai_props;
struct device_node *np;
char *name;
unsigned int daifmt;
......@@ -181,78 +220,71 @@ static int asoc_simple_card_parse_of(struct device_node *node,
return ret;
}
/* CPU sub-node */
ret = -EINVAL;
np = of_get_child_by_name(node, "simple-audio-card,cpu");
if (np) {
ret = asoc_simple_card_sub_parse_of(np, daifmt,
cpu_dai,
&dai_link->cpu_of_node,
&dai_link->cpu_dai_name);
of_node_put(np);
/* loop on the DAI links */
np = NULL;
for (;;) {
if (multi) {
np = of_get_next_child(node, np);
if (!np)
break;
}
if (ret < 0)
return ret;
/* CODEC sub-node */
ret = -EINVAL;
np = of_get_child_by_name(node, "simple-audio-card,codec");
if (np) {
ret = asoc_simple_card_sub_parse_of(np, daifmt,
codec_dai,
&dai_link->codec_of_node,
&dai_link->codec_dai_name);
of_node_put(np);
}
ret = simple_card_cpu_codec_of(multi ? np : node,
daifmt, dai_link, dai_props);
if (ret < 0)
return ret;
goto err;
/*
* overwrite cpu_dai->fmt as its DAIFMT_MASTER bit is based on CODEC
* while the other bits should be identical unless buggy SW/HW design.
*/
cpu_dai->fmt = codec_dai->fmt;
dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt;
if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name)
return -EINVAL;
if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
ret = -EINVAL;
goto err;
}
/* simple-card assumes platform == cpu */
dai_link->platform_of_node = dai_link->cpu_of_node;
/* card 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,
GFP_KERNEL);
sprintf(name, "%s-%s", dai_link->cpu_dai_name,
dai_link->codec_dai_name);
if (!priv->snd_card.name)
priv->snd_card.name = name;
dai_link->name = dai_link->stream_name = name;
/* simple-card assumes platform == cpu */
dai_link->platform_of_node = dai_link->cpu_of_node;
if (!multi)
break;
dev_dbg(dev, "card-name : %s\n", name);
dai_link++;
dai_props++;
}
/* card name is created from CPU/CODEC dai name */
dai_link = priv->snd_card.dai_link;
if (!priv->snd_card.name)
priv->snd_card.name = dai_link->name;
dev_dbg(dev, "card-name : %s\n", priv->snd_card.name);
dev_dbg(dev, "platform : %04x\n", daifmt);
dai_props = priv->dai_props;
dev_dbg(dev, "cpu : %s / %04x / %d\n",
dai_link->cpu_dai_name,
cpu_dai->fmt,
cpu_dai->sysclk);
dai_props->cpu_dai.fmt,
dai_props->cpu_dai.sysclk);
dev_dbg(dev, "codec : %s / %04x / %d\n",
dai_link->codec_dai_name,
codec_dai->fmt,
codec_dai->sysclk);
/*
* soc_bind_dai_link() will check cpu name
* after of_node matching if dai_link has cpu_dai_name.
* but, it will never match if name was created by fmt_single_name()
* remove cpu_dai_name to escape name matching.
* see
* fmt_single_name()
* fmt_multiple_name()
*/
dai_link->cpu_dai_name = NULL;
dai_props->codec_dai.fmt,
dai_props->codec_dai.sysclk);
return 0;
err:
of_node_put(np);
return ret;
}
/* update the reference count of the devices nodes at end of probe */
......@@ -282,9 +314,21 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
struct snd_soc_dai_link *dai_link;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
int ret;
int num_links, multi, ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
/* get the number of DAI links */
if (np && of_get_child_by_name(np, "simple-audio-card,dai-link")) {
num_links = of_get_child_count(np);
multi = 1;
} else {
num_links = 1;
multi = 0;
}
/* allocate the private data and the DAI link array */
priv = devm_kzalloc(dev,
sizeof(*priv) + sizeof(*dai_link) * num_links,
GFP_KERNEL);
if (!priv)
return -ENOMEM;
......@@ -293,18 +337,38 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
*/
priv->snd_card.owner = THIS_MODULE;
priv->snd_card.dev = dev;
dai_link = &priv->snd_link;
dai_link = priv->dai_link;
priv->snd_card.dai_link = dai_link;
priv->snd_card.num_links = 1;
priv->snd_card.num_links = num_links;
/* get room for the other properties */
priv->dai_props = devm_kzalloc(dev,
sizeof(*priv->dai_props) * num_links,
GFP_KERNEL);
if (!priv->dai_props)
return -ENOMEM;
if (np && of_device_is_available(np)) {
ret = asoc_simple_card_parse_of(np, priv, dev);
ret = asoc_simple_card_parse_of(np, priv, dev, multi);
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "parse error %d\n", ret);
goto err;
}
/*
* soc_bind_dai_link() will check cpu name
* after of_node matching if dai_link has cpu_dai_name.
* but, it will never match if name was created by fmt_single_name()
* remove cpu_dai_name to escape name matching.
* see
* fmt_single_name()
* fmt_multiple_name()
*/
if (num_links == 1)
dai_link->cpu_dai_name = NULL;
} else {
struct asoc_simple_card_info *cinfo;
......@@ -330,13 +394,13 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
dai_link->codec_name = cinfo->codec;
dai_link->cpu_dai_name = cinfo->cpu_dai.name;
dai_link->codec_dai_name = cinfo->codec_dai.name;
memcpy(&priv->cpu_dai, &cinfo->cpu_dai,
sizeof(priv->cpu_dai));
memcpy(&priv->codec_dai, &cinfo->codec_dai,
sizeof(priv->codec_dai));
memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
sizeof(priv->dai_props->cpu_dai));
memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai,
sizeof(priv->dai_props->codec_dai));
priv->cpu_dai.fmt |= cinfo->daifmt;
priv->codec_dai.fmt |= cinfo->daifmt;
priv->dai_props->cpu_dai.fmt |= cinfo->daifmt;
priv->dai_props->codec_dai.fmt |= cinfo->daifmt;
}
/*
......
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