* 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 == -ENOTSUPP) {
- dev_dbg(dai->dev, "ASoC: set_fmt is not supported\n");
- ret = 0;
+ 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 (!ret && set->sysclk)
+ 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);
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / blobdiff