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author | Mark Brown <broonie@linaro.org> | 2014-03-25 21:22:15 +0000 |
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committer | Mark Brown <broonie@linaro.org> | 2014-03-25 21:22:15 +0000 |
commit | bad318cd02e7cacb8e93608f050fa001830ad224 (patch) | |
tree | 8b47692f96016d7df76da4adb15645e5e1e03ad3 | |
parent | c61e9e8c47dd6ed82535e2145954ab3770e3c767 (diff) | |
parent | 6a91a17bd7b92b2d2aa9ece85457f52a62fd7708 (diff) | |
download | linux-stable-bad318cd02e7cacb8e93608f050fa001830ad224.tar.gz linux-stable-bad318cd02e7cacb8e93608f050fa001830ad224.tar.bz2 linux-stable-bad318cd02e7cacb8e93608f050fa001830ad224.zip |
Merge remote-tracking branch 'asoc/topic/simple' into asoc-next
-rw-r--r-- | Documentation/devicetree/bindings/sound/simple-card.txt | 42 | ||||
-rw-r--r-- | sound/soc/generic/simple-card.c | 220 |
2 files changed, 183 insertions, 79 deletions
diff --git a/Documentation/devicetree/bindings/sound/simple-card.txt b/Documentation/devicetree/bindings/sound/simple-card.txt index 881914b139ca..131aa2ad7f1a 100644 --- a/Documentation/devicetree/bindings/sound/simple-card.txt +++ b/Documentation/devicetree/bindings/sound/simple-card.txt @@ -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>; + }; + }; +}; diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index 2ee8ed56bcf1..21f1ccbdf582 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -20,9 +20,11 @@ struct simple_card_data { struct snd_soc_card snd_card; - struct asoc_simple_dai cpu_dai; - struct asoc_simple_dai codec_dai; - struct snd_soc_dai_link snd_link; + struct simple_dai_props { + struct asoc_simple_dai cpu_dai; + struct asoc_simple_dai codec_dai; + } *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); - } - if (ret < 0) - return ret; + /* loop on the DAI links */ + np = NULL; + for (;;) { + if (multi) { + np = of_get_next_child(node, np); + if (!np) + break; + } - /* 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); - } - if (ret < 0) - return ret; + ret = simple_card_cpu_codec_of(multi ? np : node, + daifmt, dai_link, dai_props); + if (ret < 0) + 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; + /* + * 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. + */ + dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt; + + 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; + + 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); + dai_link->name = dai_link->stream_name = name; - if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) - return -EINVAL; + if (!multi) + break; + + dai_link++; + dai_props++; + } /* 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); + dai_link = priv->snd_card.dai_link; 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; + priv->snd_card.name = dai_link->name; - dev_dbg(dev, "card-name : %s\n", 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; + + /* 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; + } - priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + /* 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; } /* |