1 files changed, 442 insertions, 52 deletions

diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 8c49147db84..03a7fdcdf11 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -8,107 +8,497 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-
-#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/device.h>
 #include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/string.h>
 #include <sound/simple_card.h>
+#include <sound/soc-dai.h>
+#include <sound/soc.h>
 
-#define asoc_simple_get_card_info(p) \
-	container_of(p->dai_link, struct asoc_simple_card_info, snd_link)
+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;
+	} *dai_props;
+	unsigned int mclk_fs;
+	struct snd_soc_dai_link dai_link[];	/* dynamically allocated */
+};
 
-static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
-				       struct asoc_simple_dai *set,
-				       unsigned int daifmt)
+static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
+				      struct snd_pcm_hw_params *params)
 {
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
+	unsigned int mclk;
 	int ret = 0;
 
-	daifmt |= set->fmt;
+	if (priv->mclk_fs) {
+		mclk = params_rate(params) * priv->mclk_fs;
+		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+					     SND_SOC_CLOCK_IN);
+	}
+
+	return ret;
+}
+
+static struct snd_soc_ops asoc_simple_card_ops = {
+	.hw_params = asoc_simple_card_hw_params,
+};
 
-	if (!ret && daifmt)
-		ret = snd_soc_dai_set_fmt(dai, daifmt);
+static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
+				       struct asoc_simple_dai *set)
+{
+	int ret;
 
-	if (!ret && set->sysclk)
+	if (set->fmt) {
+		ret = snd_soc_dai_set_fmt(dai, set->fmt);
+		if (ret && ret != -ENOTSUPP) {
+			dev_err(dai->dev, "simple-card: set_fmt error\n");
+			goto err;
+		}
+	}
+
+	if (set->sysclk) {
 		ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
+		if (ret && ret != -ENOTSUPP) {
+			dev_err(dai->dev, "simple-card: set_sysclk error\n");
+			goto err;
+		}
+	}
 
+	if (set->slots) {
+		ret = snd_soc_dai_set_tdm_slot(dai, 0, 0,
+						set->slots,
+						set->slot_width);
+		if (ret && ret != -ENOTSUPP) {
+			dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
+			goto err;
+		}
+	}
+
+	ret = 0;
+
+err:
 	return ret;
 }
 
 static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 {
-	struct asoc_simple_card_info *info = asoc_simple_get_card_info(rtd);
+	struct simple_card_data *priv =	snd_soc_card_get_drvdata(rtd->card);
 	struct snd_soc_dai *codec = rtd->codec_dai;
 	struct snd_soc_dai *cpu = rtd->cpu_dai;
-	unsigned int daifmt = info->daifmt;
-	int ret;
+	struct simple_dai_props *dai_props;
+	int num, ret;
 
-	ret = __asoc_simple_card_dai_init(codec, &info->codec_dai, daifmt);
+	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, &info->cpu_dai, daifmt);
+	ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int
+asoc_simple_card_sub_parse_of(struct device_node *np,
+			      struct asoc_simple_dai *dai,
+			      const struct device_node **p_node,
+			      const char **name)
+{
+	struct device_node *node;
+	struct clk *clk;
+	int ret;
+
+	/*
+	 * get node via "sound-dai = <&phandle port>"
+	 * it will be used as xxx_of_node on soc_bind_dai_link()
+	 */
+	node = of_parse_phandle(np, "sound-dai", 0);
+	if (!node)
+		return -ENODEV;
+	*p_node = node;
+
+	/* 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)
+		return ret;
+
+	/*
+	 * dai->sysclk come from
+	 *  "clocks = <&xxx>" (if system has common clock)
+	 *  or "system-clock-frequency = <xxx>"
+	 *  or device's module clock.
+	 */
+	if (of_property_read_bool(np, "clocks")) {
+		clk = of_clk_get(np, 0);
+		if (IS_ERR(clk)) {
+			ret = PTR_ERR(clk);
+			return ret;
+		}
+
+		dai->sysclk = clk_get_rate(clk);
+	} else if (of_property_read_bool(np, "system-clock-frequency")) {
+		of_property_read_u32(np,
+				     "system-clock-frequency",
+				     &dai->sysclk);
+	} else {
+		clk = of_clk_get(node, 0);
+		if (!IS_ERR(clk))
+			dai->sysclk = clk_get_rate(clk);
+	}
+
+	return 0;
+}
+
+static int simple_card_dai_link_of(struct device_node *node,
+				   struct device *dev,
+				   struct snd_soc_dai_link *dai_link,
+				   struct simple_dai_props *dai_props,
+				   bool is_top_level_node)
+{
+	struct device_node *np = NULL;
+	struct device_node *bitclkmaster = NULL;
+	struct device_node *framemaster = NULL;
+	unsigned int daifmt;
+	char *name;
+	char prop[128];
+	char *prefix = "";
+	int ret;
+
+	if (is_top_level_node)
+		prefix = "simple-audio-card,";
+
+	daifmt = snd_soc_of_parse_daifmt(node, prefix,
+					 &bitclkmaster, &framemaster);
+	daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
+
+	snprintf(prop, sizeof(prop), "%scpu", prefix);
+	np = of_get_child_by_name(node, prop);
+	if (!np) {
+		ret = -EINVAL;
+		dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
+		goto dai_link_of_err;
+	}
+
+	ret = asoc_simple_card_sub_parse_of(np, &dai_props->cpu_dai,
+					    &dai_link->cpu_of_node,
+					    &dai_link->cpu_dai_name);
+	if (ret < 0)
+		goto dai_link_of_err;
+
+	dai_props->cpu_dai.fmt = daifmt;
+	switch (((np == bitclkmaster) << 4) | (np == framemaster)) {
+	case 0x11:
+		dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBS_CFS;
+		break;
+	case 0x10:
+		dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBS_CFM;
+		break;
+	case 0x01:
+		dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBM_CFS;
+		break;
+	default:
+		dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBM_CFM;
+		break;
+	}
+
+	of_node_put(np);
+	snprintf(prop, sizeof(prop), "%scodec", prefix);
+	np = of_get_child_by_name(node, prop);
+	if (!np) {
+		ret = -EINVAL;
+		dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
+		goto dai_link_of_err;
+	}
+
+	ret = asoc_simple_card_sub_parse_of(np, &dai_props->codec_dai,
+					    &dai_link->codec_of_node,
+					    &dai_link->codec_dai_name);
+	if (ret < 0)
+		goto dai_link_of_err;
+
+	if (strlen(prefix) && !bitclkmaster && !framemaster) {
+		/* No dai-link level and master setting was not found from
+		   sound node level, revert back to legacy DT parsing and
+		   take the settings from codec node. */
+		dev_dbg(dev, "%s: Revert to legacy daifmt parsing\n",
+			__func__);
+		dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt =
+			snd_soc_of_parse_daifmt(np, NULL, NULL, NULL) |
+			(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
+	} else {
+		dai_props->codec_dai.fmt = daifmt;
+		switch (((np == bitclkmaster) << 4) | (np == framemaster)) {
+		case 0x11:
+			dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBM_CFM;
+			break;
+		case 0x10:
+			dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBM_CFS;
+			break;
+		case 0x01:
+			dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBS_CFM;
+			break;
+		default:
+			dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBS_CFS;
+			break;
+		}
+	}
+
+	if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
+		ret = -EINVAL;
+		goto dai_link_of_err;
+	}
+
+	/* simple-card assumes platform == cpu */
+	dai_link->platform_of_node = dai_link->cpu_of_node;
+
+	/* 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,
+			    GFP_KERNEL);
+	sprintf(name, "%s-%s", dai_link->cpu_dai_name,
+				dai_link->codec_dai_name);
+	dai_link->name = dai_link->stream_name = name;
+	dai_link->ops = &asoc_simple_card_ops;
+
+	dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
+	dev_dbg(dev, "\tcpu : %s / %04x / %d\n",
+		dai_link->cpu_dai_name,
+		dai_props->cpu_dai.fmt,
+		dai_props->cpu_dai.sysclk);
+	dev_dbg(dev, "\tcodec : %s / %04x / %d\n",
+		dai_link->codec_dai_name,
+		dai_props->codec_dai.fmt,
+		dai_props->codec_dai.sysclk);
+
+dai_link_of_err:
+	if (np)
+		of_node_put(np);
+	if (bitclkmaster)
+		of_node_put(bitclkmaster);
+	if (framemaster)
+		of_node_put(framemaster);
+	return ret;
+}
+
+static int asoc_simple_card_parse_of(struct device_node *node,
+				     struct simple_card_data *priv,
+				     struct device *dev,
+				     int multi)
+{
+	struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link;
+	struct simple_dai_props *dai_props = priv->dai_props;
+	int ret;
+
+	/* parsing the card name from DT */
+	snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name");
+
+	/* off-codec widgets */
+	if (of_property_read_bool(node, "simple-audio-card,widgets")) {
+		ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
+					"simple-audio-card,widgets");
+		if (ret)
+			return ret;
+	}
+
+	/* DAPM routes */
+	if (of_property_read_bool(node, "simple-audio-card,routing")) {
+		ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
+					"simple-audio-card,routing");
+		if (ret)
+			return ret;
+	}
+
+	/* Factor to mclk, used in hw_params() */
+	of_property_read_u32(node, "simple-audio-card,mclk-fs",
+			     &priv->mclk_fs);
+
+	dev_dbg(dev, "New simple-card: %s\n", priv->snd_card.name ?
+		priv->snd_card.name : "");
+
+	if (multi) {
+		struct device_node *np = NULL;
+		int i;
+		for (i = 0; (np = of_get_next_child(node, np)); i++) {
+			dev_dbg(dev, "\tlink %d:\n", i);
+			ret = simple_card_dai_link_of(np, dev, dai_link + i,
+						      dai_props + i, false);
+			if (ret < 0) {
+				of_node_put(np);
+				return ret;
+			}
+		}
+	} else {
+		ret = simple_card_dai_link_of(node, dev, dai_link, dai_props,
+					      true);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (!priv->snd_card.name)
+		priv->snd_card.name = priv->snd_card.dai_link->name;
+
+	return 0;
+}
+
+/* update the reference count of the devices nodes at end of probe */
+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;
+	struct device_node *np;
+	int num_links;
+
+	for (num_links = 0, dai_link = card->dai_link;
+	     num_links < card->num_links;
+	     num_links++, dai_link++) {
+		np = (struct device_node *) dai_link->cpu_of_node;
+		if (np)
+			of_node_put(np);
+		np = (struct device_node *) dai_link->codec_of_node;
+		if (np)
+			of_node_put(np);
+	}
 	return 0;
 }
 
 static int asoc_simple_card_probe(struct platform_device *pdev)
 {
-	struct asoc_simple_card_info *cinfo = pdev->dev.platform_data;
+	struct simple_card_data *priv;
+	struct snd_soc_dai_link *dai_link;
+	struct device_node *np = pdev->dev.of_node;
 	struct device *dev = &pdev->dev;
+	int num_links, multi, ret;
 
-	if (!cinfo) {
-		dev_err(dev, "no info for asoc-simple-card\n");
-		return -EINVAL;
+	/* 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;
 	}
 
-	if (!cinfo->name	||
-	    !cinfo->card	||
-	    !cinfo->codec	||
-	    !cinfo->platform	||
-	    !cinfo->cpu_dai.name ||
-	    !cinfo->codec_dai.name) {
-		dev_err(dev, "insufficient asoc_simple_card_info settings\n");
-		return -EINVAL;
-	}
+	/* 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;
 
 	/*
-	 * init snd_soc_dai_link
+	 * init snd_soc_card
 	 */
-	cinfo->snd_link.name		= cinfo->name;
-	cinfo->snd_link.stream_name	= cinfo->name;
-	cinfo->snd_link.cpu_dai_name	= cinfo->cpu_dai.name;
-	cinfo->snd_link.platform_name	= cinfo->platform;
-	cinfo->snd_link.codec_name	= cinfo->codec;
-	cinfo->snd_link.codec_dai_name	= cinfo->codec_dai.name;
-	cinfo->snd_link.init		= asoc_simple_card_dai_init;
+	priv->snd_card.owner = THIS_MODULE;
+	priv->snd_card.dev = dev;
+	dai_link = priv->dai_link;
+	priv->snd_card.dai_link = dai_link;
+	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, 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;
+
+		cinfo = dev->platform_data;
+		if (!cinfo) {
+			dev_err(dev, "no info for asoc-simple-card\n");
+			return -EINVAL;
+		}
+
+		if (!cinfo->name ||
+		    !cinfo->codec_dai.name ||
+		    !cinfo->codec ||
+		    !cinfo->platform ||
+		    !cinfo->cpu_dai.name) {
+			dev_err(dev, "insufficient asoc_simple_card_info settings\n");
+			return -EINVAL;
+		}
+
+		priv->snd_card.name	= (cinfo->card) ? cinfo->card : cinfo->name;
+		dai_link->name		= cinfo->name;
+		dai_link->stream_name	= cinfo->name;
+		dai_link->platform_name	= cinfo->platform;
+		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->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->dai_props->cpu_dai.fmt	|= cinfo->daifmt;
+		priv->dai_props->codec_dai.fmt	|= cinfo->daifmt;
+	}
 
 	/*
-	 * init snd_soc_card
+	 * init snd_soc_dai_link
 	 */
-	cinfo->snd_card.name		= cinfo->card;
-	cinfo->snd_card.owner		= THIS_MODULE;
-	cinfo->snd_card.dai_link	= &cinfo->snd_link;
-	cinfo->snd_card.num_links	= 1;
-	cinfo->snd_card.dev		= &pdev->dev;
+	dai_link->init = asoc_simple_card_dai_init;
 
-	return snd_soc_register_card(&cinfo->snd_card);
-}
+	snd_soc_card_set_drvdata(&priv->snd_card, priv);
 
-static int asoc_simple_card_remove(struct platform_device *pdev)
-{
-	struct asoc_simple_card_info *cinfo = pdev->dev.platform_data;
+	ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
 
-	return snd_soc_unregister_card(&cinfo->snd_card);
+err:
+	asoc_simple_card_unref(pdev);
+	return ret;
 }
 
+static const struct of_device_id asoc_simple_of_match[] = {
+	{ .compatible = "simple-audio-card", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
+
 static struct platform_driver asoc_simple_card = {
 	.driver = {
-		.name	= "asoc-simple-card",
+		.name = "asoc-simple-card",
 		.owner = THIS_MODULE,
+		.of_match_table = asoc_simple_of_match,
 	},
-	.probe		= asoc_simple_card_probe,
-	.remove		= asoc_simple_card_remove,
+	.probe = asoc_simple_card_probe,
 };
 
 module_platform_driver(asoc_simple_card);