v4.19.13 snapshot.
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
new file mode 100644
index 0000000..64bf356
--- /dev/null
+++ b/sound/soc/generic/simple-card.c
@@ -0,0 +1,478 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// ASoC simple sound card support
+//
+// Copyright (C) 2012 Renesas Solutions Corp.
+// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+#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>
+
+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;
+ unsigned int mclk_fs;
+ } *dai_props;
+ unsigned int mclk_fs;
+ struct asoc_simple_jack hp_jack;
+ struct asoc_simple_jack mic_jack;
+ struct snd_soc_dai_link *dai_link;
+};
+
+#define simple_priv_to_card(priv) (&(priv)->snd_card)
+#define simple_priv_to_props(priv, i) ((priv)->dai_props + (i))
+#define simple_priv_to_dev(priv) (simple_priv_to_card(priv)->dev)
+#define simple_priv_to_link(priv, i) (simple_priv_to_card(priv)->dai_link + (i))
+
+#define DAI "sound-dai"
+#define CELL "#sound-dai-cells"
+#define PREFIX "simple-audio-card,"
+
+static int asoc_simple_card_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
+ struct simple_dai_props *dai_props =
+ simple_priv_to_props(priv, rtd->num);
+ int ret;
+
+ ret = asoc_simple_card_clk_enable(&dai_props->cpu_dai);
+ if (ret)
+ return ret;
+
+ ret = asoc_simple_card_clk_enable(&dai_props->codec_dai);
+ if (ret)
+ asoc_simple_card_clk_disable(&dai_props->cpu_dai);
+
+ return ret;
+}
+
+static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
+ struct simple_dai_props *dai_props =
+ simple_priv_to_props(priv, rtd->num);
+
+ asoc_simple_card_clk_disable(&dai_props->cpu_dai);
+
+ asoc_simple_card_clk_disable(&dai_props->codec_dai);
+}
+
+static int asoc_simple_set_clk_rate(struct asoc_simple_dai *simple_dai,
+ unsigned long rate)
+{
+ if (!simple_dai->clk)
+ return 0;
+
+ if (clk_get_rate(simple_dai->clk) == rate)
+ return 0;
+
+ return clk_set_rate(simple_dai->clk, rate);
+}
+
+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 snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
+ struct simple_dai_props *dai_props =
+ simple_priv_to_props(priv, rtd->num);
+ unsigned int mclk, mclk_fs = 0;
+ int ret = 0;
+
+ if (priv->mclk_fs)
+ mclk_fs = priv->mclk_fs;
+ else if (dai_props->mclk_fs)
+ mclk_fs = dai_props->mclk_fs;
+
+ if (mclk_fs) {
+ mclk = params_rate(params) * mclk_fs;
+
+ ret = asoc_simple_set_clk_rate(&dai_props->codec_dai, mclk);
+ if (ret < 0)
+ return ret;
+
+ ret = asoc_simple_set_clk_rate(&dai_props->cpu_dai, mclk);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+ SND_SOC_CLOCK_IN);
+ if (ret && ret != -ENOTSUPP)
+ goto err;
+
+ ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
+ SND_SOC_CLOCK_OUT);
+ if (ret && ret != -ENOTSUPP)
+ goto err;
+ }
+ return 0;
+err:
+ return ret;
+}
+
+static const struct snd_soc_ops asoc_simple_card_ops = {
+ .startup = asoc_simple_card_startup,
+ .shutdown = asoc_simple_card_shutdown,
+ .hw_params = asoc_simple_card_hw_params,
+};
+
+static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *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;
+ struct simple_dai_props *dai_props =
+ simple_priv_to_props(priv, rtd->num);
+ int ret;
+
+ ret = asoc_simple_card_init_dai(codec, &dai_props->codec_dai);
+ if (ret < 0)
+ return ret;
+
+ ret = asoc_simple_card_init_dai(cpu, &dai_props->cpu_dai);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int asoc_simple_card_dai_link_of(struct device_node *node,
+ struct simple_card_data *priv,
+ int idx,
+ bool is_top_level_node)
+{
+ struct device *dev = simple_priv_to_dev(priv);
+ struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
+ struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
+ struct asoc_simple_dai *cpu_dai = &dai_props->cpu_dai;
+ struct asoc_simple_dai *codec_dai = &dai_props->codec_dai;
+ struct device_node *cpu = NULL;
+ struct device_node *plat = NULL;
+ struct device_node *codec = NULL;
+ char prop[128];
+ char *prefix = "";
+ int ret, single_cpu;
+
+ /* For single DAI link & old style of DT node */
+ if (is_top_level_node)
+ prefix = PREFIX;
+
+ snprintf(prop, sizeof(prop), "%scpu", prefix);
+ cpu = of_get_child_by_name(node, prop);
+
+ if (!cpu) {
+ ret = -EINVAL;
+ dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
+ goto dai_link_of_err;
+ }
+
+ snprintf(prop, sizeof(prop), "%splat", prefix);
+ plat = of_get_child_by_name(node, prop);
+
+ snprintf(prop, sizeof(prop), "%scodec", prefix);
+ codec = of_get_child_by_name(node, prop);
+
+ if (!codec) {
+ ret = -EINVAL;
+ dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
+ goto dai_link_of_err;
+ }
+
+ ret = asoc_simple_card_parse_daifmt(dev, node, codec,
+ prefix, &dai_link->dai_fmt);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ of_property_read_u32(node, "mclk-fs", &dai_props->mclk_fs);
+
+ ret = asoc_simple_card_parse_cpu(cpu, dai_link,
+ DAI, CELL, &single_cpu);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ ret = asoc_simple_card_parse_codec(codec, dai_link, DAI, CELL);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ ret = asoc_simple_card_parse_platform(plat, dai_link, DAI, CELL);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ ret = asoc_simple_card_of_parse_tdm(cpu, cpu_dai);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ ret = asoc_simple_card_of_parse_tdm(codec, codec_dai);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ ret = asoc_simple_card_parse_clk_cpu(dev, cpu, dai_link, cpu_dai);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ ret = asoc_simple_card_parse_clk_codec(dev, codec, dai_link, codec_dai);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ ret = asoc_simple_card_canonicalize_dailink(dai_link);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ ret = asoc_simple_card_set_dailink_name(dev, dai_link,
+ "%s-%s",
+ dai_link->cpu_dai_name,
+ dai_link->codec_dai_name);
+ if (ret < 0)
+ goto dai_link_of_err;
+
+ dai_link->ops = &asoc_simple_card_ops;
+ dai_link->init = asoc_simple_card_dai_init;
+
+ asoc_simple_card_canonicalize_cpu(dai_link, single_cpu);
+
+dai_link_of_err:
+ of_node_put(cpu);
+ of_node_put(codec);
+
+ return ret;
+}
+
+static int asoc_simple_card_parse_aux_devs(struct device_node *node,
+ struct simple_card_data *priv)
+{
+ struct device *dev = simple_priv_to_dev(priv);
+ struct device_node *aux_node;
+ struct snd_soc_card *card = simple_priv_to_card(priv);
+ int i, n, len;
+
+ if (!of_find_property(node, PREFIX "aux-devs", &len))
+ return 0; /* Ok to have no aux-devs */
+
+ n = len / sizeof(__be32);
+ if (n <= 0)
+ return -EINVAL;
+
+ card->aux_dev = devm_kcalloc(dev,
+ n, sizeof(*card->aux_dev), GFP_KERNEL);
+ if (!card->aux_dev)
+ return -ENOMEM;
+
+ for (i = 0; i < n; i++) {
+ aux_node = of_parse_phandle(node, PREFIX "aux-devs", i);
+ if (!aux_node)
+ return -EINVAL;
+ card->aux_dev[i].codec_of_node = aux_node;
+ }
+
+ card->num_aux_devs = n;
+ return 0;
+}
+
+static int asoc_simple_card_parse_of(struct simple_card_data *priv)
+{
+ struct device *dev = simple_priv_to_dev(priv);
+ struct snd_soc_card *card = simple_priv_to_card(priv);
+ struct device_node *dai_link;
+ struct device_node *node = dev->of_node;
+ int ret;
+
+ if (!node)
+ return -EINVAL;
+
+ dai_link = of_get_child_by_name(node, PREFIX "dai-link");
+
+ ret = asoc_simple_card_of_parse_widgets(card, PREFIX);
+ if (ret < 0)
+ goto card_parse_end;
+
+ ret = asoc_simple_card_of_parse_routing(card, PREFIX, 1);
+ if (ret < 0)
+ goto card_parse_end;
+
+ /* Factor to mclk, used in hw_params() */
+ of_property_read_u32(node, PREFIX "mclk-fs", &priv->mclk_fs);
+
+ /* Single/Muti DAI link(s) & New style of DT node */
+ if (dai_link) {
+ struct device_node *np = NULL;
+ int i = 0;
+
+ for_each_child_of_node(node, np) {
+ dev_dbg(dev, "\tlink %d:\n", i);
+ ret = asoc_simple_card_dai_link_of(np, priv,
+ i, false);
+ if (ret < 0) {
+ of_node_put(np);
+ goto card_parse_end;
+ }
+ i++;
+ }
+ } else {
+ /* For single DAI link & old style of DT node */
+ ret = asoc_simple_card_dai_link_of(node, priv, 0, true);
+ if (ret < 0)
+ goto card_parse_end;
+ }
+
+ ret = asoc_simple_card_parse_card_name(card, PREFIX);
+ if (ret < 0)
+ goto card_parse_end;
+
+ ret = asoc_simple_card_parse_aux_devs(node, priv);
+
+card_parse_end:
+ of_node_put(dai_link);
+
+ return ret;
+}
+
+static int asoc_simple_soc_card_probe(struct snd_soc_card *card)
+{
+ struct simple_card_data *priv = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ ret = asoc_simple_card_init_hp(card, &priv->hp_jack, PREFIX);
+ if (ret < 0)
+ return ret;
+
+ ret = asoc_simple_card_init_mic(card, &priv->mic_jack, PREFIX);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int asoc_simple_card_probe(struct platform_device *pdev)
+{
+ struct simple_card_data *priv;
+ struct snd_soc_dai_link *dai_link;
+ struct simple_dai_props *dai_props;
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct snd_soc_card *card;
+ int num, ret;
+
+ /* Get the number of DAI links */
+ if (np && of_get_child_by_name(np, PREFIX "dai-link"))
+ num = of_get_child_count(np);
+ else
+ num = 1;
+
+ /* Allocate the private data and the DAI link array */
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ dai_props = devm_kcalloc(dev, num, sizeof(*dai_props), GFP_KERNEL);
+ dai_link = devm_kcalloc(dev, num, sizeof(*dai_link), GFP_KERNEL);
+ if (!dai_props || !dai_link)
+ return -ENOMEM;
+
+ priv->dai_props = dai_props;
+ priv->dai_link = dai_link;
+
+ /* Init snd_soc_card */
+ card = simple_priv_to_card(priv);
+ card->owner = THIS_MODULE;
+ card->dev = dev;
+ card->dai_link = priv->dai_link;
+ card->num_links = num;
+ card->probe = asoc_simple_soc_card_probe;
+
+ if (np && of_device_is_available(np)) {
+
+ ret = asoc_simple_card_parse_of(priv);
+ if (ret < 0) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "parse error %d\n", ret);
+ goto err;
+ }
+
+ } 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;
+ }
+
+ 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;
+ dai_link->dai_fmt = cinfo->daifmt;
+ dai_link->init = asoc_simple_card_dai_init;
+ 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));
+ }
+
+ snd_soc_card_set_drvdata(card, priv);
+
+ ret = devm_snd_soc_register_card(dev, card);
+ if (ret < 0)
+ goto err;
+
+ return 0;
+err:
+ asoc_simple_card_clean_reference(card);
+
+ return ret;
+}
+
+static int asoc_simple_card_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+ return asoc_simple_card_clean_reference(card);
+}
+
+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",
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = asoc_simple_of_match,
+ },
+ .probe = asoc_simple_card_probe,
+ .remove = asoc_simple_card_remove,
+};
+
+module_platform_driver(asoc_simple_card);
+
+MODULE_ALIAS("platform:asoc-simple-card");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ASoC Simple Sound Card");
+MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");