Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 982 insertions, 0 deletions

diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
new file mode 100644
index 000000000..c71935463
--- /dev/null
+++ b/sound/soc/generic/simple-card-utils.c
@@ -0,0 +1,982 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// simple-card-utils.c
+//
+// Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+#include <linux/clk.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <sound/jack.h>
+#include <sound/pcm_params.h>
+#include <sound/simple_card_utils.h>
+
+static void asoc_simple_fixup_sample_fmt(struct asoc_simple_data *data,
+					 struct snd_pcm_hw_params *params)
+{
+	int i;
+	struct snd_mask *mask = hw_param_mask(params,
+					      SNDRV_PCM_HW_PARAM_FORMAT);
+	struct {
+		char *fmt;
+		u32 val;
+	} of_sample_fmt_table[] = {
+		{ "s8",		SNDRV_PCM_FORMAT_S8},
+		{ "s16_le",	SNDRV_PCM_FORMAT_S16_LE},
+		{ "s24_le",	SNDRV_PCM_FORMAT_S24_LE},
+		{ "s24_3le",	SNDRV_PCM_FORMAT_S24_3LE},
+		{ "s32_le",	SNDRV_PCM_FORMAT_S32_LE},
+	};
+
+	for (i = 0; i < ARRAY_SIZE(of_sample_fmt_table); i++) {
+		if (!strcmp(data->convert_sample_format,
+			    of_sample_fmt_table[i].fmt)) {
+			snd_mask_none(mask);
+			snd_mask_set(mask, of_sample_fmt_table[i].val);
+			break;
+		}
+	}
+}
+
+void asoc_simple_convert_fixup(struct asoc_simple_data *data,
+			       struct snd_pcm_hw_params *params)
+{
+	struct snd_interval *rate = hw_param_interval(params,
+						SNDRV_PCM_HW_PARAM_RATE);
+	struct snd_interval *channels = hw_param_interval(params,
+						SNDRV_PCM_HW_PARAM_CHANNELS);
+
+	if (data->convert_rate)
+		rate->min =
+		rate->max = data->convert_rate;
+
+	if (data->convert_channels)
+		channels->min =
+		channels->max = data->convert_channels;
+
+	if (data->convert_sample_format)
+		asoc_simple_fixup_sample_fmt(data, params);
+}
+EXPORT_SYMBOL_GPL(asoc_simple_convert_fixup);
+
+void asoc_simple_parse_convert(struct device_node *np,
+			       char *prefix,
+			       struct asoc_simple_data *data)
+{
+	char prop[128];
+
+	if (!prefix)
+		prefix = "";
+
+	/* sampling rate convert */
+	snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate");
+	of_property_read_u32(np, prop, &data->convert_rate);
+
+	/* channels transfer */
+	snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels");
+	of_property_read_u32(np, prop, &data->convert_channels);
+
+	/* convert sample format */
+	snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-sample-format");
+	of_property_read_string(np, prop, &data->convert_sample_format);
+}
+EXPORT_SYMBOL_GPL(asoc_simple_parse_convert);
+
+/**
+ * asoc_simple_is_convert_required() - Query if HW param conversion was requested
+ * @data: Link data.
+ *
+ * Returns true if any HW param conversion was requested for this DAI link with
+ * any "convert-xxx" properties.
+ */
+bool asoc_simple_is_convert_required(const struct asoc_simple_data *data)
+{
+	return data->convert_rate ||
+	       data->convert_channels ||
+	       data->convert_sample_format;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_is_convert_required);
+
+int asoc_simple_parse_daifmt(struct device *dev,
+			     struct device_node *node,
+			     struct device_node *codec,
+			     char *prefix,
+			     unsigned int *retfmt)
+{
+	struct device_node *bitclkmaster = NULL;
+	struct device_node *framemaster = NULL;
+	unsigned int daifmt;
+
+	daifmt = snd_soc_daifmt_parse_format(node, prefix);
+
+	snd_soc_daifmt_parse_clock_provider_as_phandle(node, prefix, &bitclkmaster, &framemaster);
+	if (!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, "Revert to legacy daifmt parsing\n");
+
+		daifmt |= snd_soc_daifmt_parse_clock_provider_as_flag(codec, NULL);
+	} else {
+		daifmt |= snd_soc_daifmt_clock_provider_from_bitmap(
+				((codec == bitclkmaster) << 4) | (codec == framemaster));
+	}
+
+	of_node_put(bitclkmaster);
+	of_node_put(framemaster);
+
+	*retfmt = daifmt;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_parse_daifmt);
+
+int asoc_simple_parse_tdm_width_map(struct device *dev, struct device_node *np,
+				    struct asoc_simple_dai *dai)
+{
+	u32 *array_values, *p;
+	int n, i, ret;
+
+	if (!of_property_read_bool(np, "dai-tdm-slot-width-map"))
+		return 0;
+
+	n = of_property_count_elems_of_size(np, "dai-tdm-slot-width-map", sizeof(u32));
+	if (n % 3) {
+		dev_err(dev, "Invalid number of cells for dai-tdm-slot-width-map\n");
+		return -EINVAL;
+	}
+
+	dai->tdm_width_map = devm_kcalloc(dev, n, sizeof(*dai->tdm_width_map), GFP_KERNEL);
+	if (!dai->tdm_width_map)
+		return -ENOMEM;
+
+	array_values = kcalloc(n, sizeof(*array_values), GFP_KERNEL);
+	if (!array_values)
+		return -ENOMEM;
+
+	ret = of_property_read_u32_array(np, "dai-tdm-slot-width-map", array_values, n);
+	if (ret < 0) {
+		dev_err(dev, "Could not read dai-tdm-slot-width-map: %d\n", ret);
+		goto out;
+	}
+
+	p = array_values;
+	for (i = 0; i < n / 3; ++i) {
+		dai->tdm_width_map[i].sample_bits = *p++;
+		dai->tdm_width_map[i].slot_width = *p++;
+		dai->tdm_width_map[i].slot_count = *p++;
+	}
+
+	dai->n_tdm_widths = i;
+	ret = 0;
+out:
+	kfree(array_values);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_parse_tdm_width_map);
+
+int asoc_simple_set_dailink_name(struct device *dev,
+				 struct snd_soc_dai_link *dai_link,
+				 const char *fmt, ...)
+{
+	va_list ap;
+	char *name = NULL;
+	int ret = -ENOMEM;
+
+	va_start(ap, fmt);
+	name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap);
+	va_end(ap);
+
+	if (name) {
+		ret = 0;
+
+		dai_link->name		= name;
+		dai_link->stream_name	= name;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_set_dailink_name);
+
+int asoc_simple_parse_card_name(struct snd_soc_card *card,
+				char *prefix)
+{
+	int ret;
+
+	if (!prefix)
+		prefix = "";
+
+	/* Parse the card name from DT */
+	ret = snd_soc_of_parse_card_name(card, "label");
+	if (ret < 0 || !card->name) {
+		char prop[128];
+
+		snprintf(prop, sizeof(prop), "%sname", prefix);
+		ret = snd_soc_of_parse_card_name(card, prop);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (!card->name && card->dai_link)
+		card->name = card->dai_link->name;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_parse_card_name);
+
+static int asoc_simple_clk_enable(struct asoc_simple_dai *dai)
+{
+	if (dai)
+		return clk_prepare_enable(dai->clk);
+
+	return 0;
+}
+
+static void asoc_simple_clk_disable(struct asoc_simple_dai *dai)
+{
+	if (dai)
+		clk_disable_unprepare(dai->clk);
+}
+
+int asoc_simple_parse_clk(struct device *dev,
+			  struct device_node *node,
+			  struct asoc_simple_dai *simple_dai,
+			  struct snd_soc_dai_link_component *dlc)
+{
+	struct clk *clk;
+	u32 val;
+
+	/*
+	 * Parse dai->sysclk come from "clocks = <&xxx>"
+	 * (if system has common clock)
+	 *  or "system-clock-frequency = <xxx>"
+	 *  or device's module clock.
+	 */
+	clk = devm_get_clk_from_child(dev, node, NULL);
+	simple_dai->clk_fixed = of_property_read_bool(
+		node, "system-clock-fixed");
+	if (!IS_ERR(clk)) {
+		simple_dai->sysclk = clk_get_rate(clk);
+
+		simple_dai->clk = clk;
+	} else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
+		simple_dai->sysclk = val;
+		simple_dai->clk_fixed = true;
+	} else {
+		clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
+		if (!IS_ERR(clk))
+			simple_dai->sysclk = clk_get_rate(clk);
+	}
+
+	if (of_property_read_bool(node, "system-clock-direction-out"))
+		simple_dai->clk_direction = SND_SOC_CLOCK_OUT;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_parse_clk);
+
+static int asoc_simple_check_fixed_sysclk(struct device *dev,
+					  struct asoc_simple_dai *dai,
+					  unsigned int *fixed_sysclk)
+{
+	if (dai->clk_fixed) {
+		if (*fixed_sysclk && *fixed_sysclk != dai->sysclk) {
+			dev_err(dev, "inconsistent fixed sysclk rates (%u vs %u)\n",
+				*fixed_sysclk, dai->sysclk);
+			return -EINVAL;
+		}
+		*fixed_sysclk = dai->sysclk;
+	}
+
+	return 0;
+}
+
+int asoc_simple_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+	struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
+	struct asoc_simple_dai *dai;
+	unsigned int fixed_sysclk = 0;
+	int i1, i2, i;
+	int ret;
+
+	for_each_prop_dai_cpu(props, i1, dai) {
+		ret = asoc_simple_clk_enable(dai);
+		if (ret)
+			goto cpu_err;
+		ret = asoc_simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
+		if (ret)
+			goto cpu_err;
+	}
+
+	for_each_prop_dai_codec(props, i2, dai) {
+		ret = asoc_simple_clk_enable(dai);
+		if (ret)
+			goto codec_err;
+		ret = asoc_simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
+		if (ret)
+			goto codec_err;
+	}
+
+	if (fixed_sysclk && props->mclk_fs) {
+		unsigned int fixed_rate = fixed_sysclk / props->mclk_fs;
+
+		if (fixed_sysclk % props->mclk_fs) {
+			dev_err(rtd->dev, "fixed sysclk %u not divisible by mclk_fs %u\n",
+				fixed_sysclk, props->mclk_fs);
+			ret = -EINVAL;
+			goto codec_err;
+		}
+		ret = snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_RATE,
+			fixed_rate, fixed_rate);
+		if (ret < 0)
+			goto codec_err;
+	}
+
+	return 0;
+
+codec_err:
+	for_each_prop_dai_codec(props, i, dai) {
+		if (i >= i2)
+			break;
+		asoc_simple_clk_disable(dai);
+	}
+cpu_err:
+	for_each_prop_dai_cpu(props, i, dai) {
+		if (i >= i1)
+			break;
+		asoc_simple_clk_disable(dai);
+	}
+	return ret;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_startup);
+
+void asoc_simple_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+	struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
+	struct asoc_simple_dai *dai;
+	int i;
+
+	for_each_prop_dai_cpu(props, i, dai) {
+		struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, i);
+
+		if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(cpu_dai))
+			snd_soc_dai_set_sysclk(cpu_dai,
+					       0, 0, SND_SOC_CLOCK_OUT);
+
+		asoc_simple_clk_disable(dai);
+	}
+	for_each_prop_dai_codec(props, i, dai) {
+		struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, i);
+
+		if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(codec_dai))
+			snd_soc_dai_set_sysclk(codec_dai,
+					       0, 0, SND_SOC_CLOCK_IN);
+
+		asoc_simple_clk_disable(dai);
+	}
+}
+EXPORT_SYMBOL_GPL(asoc_simple_shutdown);
+
+static int asoc_simple_set_clk_rate(struct device *dev,
+				    struct asoc_simple_dai *simple_dai,
+				    unsigned long rate)
+{
+	if (!simple_dai)
+		return 0;
+
+	if (simple_dai->clk_fixed && rate != simple_dai->sysclk) {
+		dev_err(dev, "dai %s invalid clock rate %lu\n", simple_dai->name, rate);
+		return -EINVAL;
+	}
+
+	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_set_tdm(struct snd_soc_dai *dai,
+				struct asoc_simple_dai *simple_dai,
+				struct snd_pcm_hw_params *params)
+{
+	int sample_bits = params_width(params);
+	int slot_width, slot_count;
+	int i, ret;
+
+	if (!simple_dai || !simple_dai->tdm_width_map)
+		return 0;
+
+	slot_width = simple_dai->slot_width;
+	slot_count = simple_dai->slots;
+
+	if (slot_width == 0)
+		slot_width = sample_bits;
+
+	for (i = 0; i < simple_dai->n_tdm_widths; ++i) {
+		if (simple_dai->tdm_width_map[i].sample_bits == sample_bits) {
+			slot_width = simple_dai->tdm_width_map[i].slot_width;
+			slot_count = simple_dai->tdm_width_map[i].slot_count;
+			break;
+		}
+	}
+
+	ret = snd_soc_dai_set_tdm_slot(dai,
+				       simple_dai->tx_slot_mask,
+				       simple_dai->rx_slot_mask,
+				       slot_count,
+				       slot_width);
+	if (ret && ret != -ENOTSUPP) {
+		dev_err(dai->dev, "simple-card: set_tdm_slot error: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+int asoc_simple_hw_params(struct snd_pcm_substream *substream,
+			  struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct asoc_simple_dai *pdai;
+	struct snd_soc_dai *sdai;
+	struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+	struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
+	unsigned int mclk, mclk_fs = 0;
+	int i, ret;
+
+	if (props->mclk_fs)
+		mclk_fs = props->mclk_fs;
+
+	if (mclk_fs) {
+		struct snd_soc_component *component;
+		mclk = params_rate(params) * mclk_fs;
+
+		for_each_prop_dai_codec(props, i, pdai) {
+			ret = asoc_simple_set_clk_rate(rtd->dev, pdai, mclk);
+			if (ret < 0)
+				return ret;
+		}
+
+		for_each_prop_dai_cpu(props, i, pdai) {
+			ret = asoc_simple_set_clk_rate(rtd->dev, pdai, mclk);
+			if (ret < 0)
+				return ret;
+		}
+
+		/* Ensure sysclk is set on all components in case any
+		 * (such as platform components) are missed by calls to
+		 * snd_soc_dai_set_sysclk.
+		 */
+		for_each_rtd_components(rtd, i, component) {
+			ret = snd_soc_component_set_sysclk(component, 0, 0,
+							   mclk, SND_SOC_CLOCK_IN);
+			if (ret && ret != -ENOTSUPP)
+				return ret;
+		}
+
+		for_each_rtd_codec_dais(rtd, i, sdai) {
+			ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_IN);
+			if (ret && ret != -ENOTSUPP)
+				return ret;
+		}
+
+		for_each_rtd_cpu_dais(rtd, i, sdai) {
+			ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_OUT);
+			if (ret && ret != -ENOTSUPP)
+				return ret;
+		}
+	}
+
+	for_each_prop_dai_codec(props, i, pdai) {
+		sdai = asoc_rtd_to_codec(rtd, i);
+		ret = asoc_simple_set_tdm(sdai, pdai, params);
+		if (ret < 0)
+			return ret;
+	}
+
+	for_each_prop_dai_cpu(props, i, pdai) {
+		sdai = asoc_rtd_to_cpu(rtd, i);
+		ret = asoc_simple_set_tdm(sdai, pdai, params);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_hw_params);
+
+int asoc_simple_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
+				   struct snd_pcm_hw_params *params)
+{
+	struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+	struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
+
+	asoc_simple_convert_fixup(&dai_props->adata, params);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_be_hw_params_fixup);
+
+static int asoc_simple_init_dai(struct snd_soc_dai *dai,
+				     struct asoc_simple_dai *simple_dai)
+{
+	int ret;
+
+	if (!simple_dai)
+		return 0;
+
+	if (simple_dai->sysclk) {
+		ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
+					     simple_dai->clk_direction);
+		if (ret && ret != -ENOTSUPP) {
+			dev_err(dai->dev, "simple-card: set_sysclk error\n");
+			return ret;
+		}
+	}
+
+	if (simple_dai->slots) {
+		ret = snd_soc_dai_set_tdm_slot(dai,
+					       simple_dai->tx_slot_mask,
+					       simple_dai->rx_slot_mask,
+					       simple_dai->slots,
+					       simple_dai->slot_width);
+		if (ret && ret != -ENOTSUPP) {
+			dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static inline int asoc_simple_component_is_codec(struct snd_soc_component *component)
+{
+	return component->driver->endianness;
+}
+
+static int asoc_simple_init_for_codec2codec(struct snd_soc_pcm_runtime *rtd,
+					    struct simple_dai_props *dai_props)
+{
+	struct snd_soc_dai_link *dai_link = rtd->dai_link;
+	struct snd_soc_component *component;
+	struct snd_soc_pcm_stream *params;
+	struct snd_pcm_hardware hw;
+	int i, ret, stream;
+
+	/* Do nothing if it already has Codec2Codec settings */
+	if (dai_link->params)
+		return 0;
+
+	/* Do nothing if it was DPCM :: BE */
+	if (dai_link->no_pcm)
+		return 0;
+
+	/* Only Codecs */
+	for_each_rtd_components(rtd, i, component) {
+		if (!asoc_simple_component_is_codec(component))
+			return 0;
+	}
+
+	/* Assumes the capabilities are the same for all supported streams */
+	for_each_pcm_streams(stream) {
+		ret = snd_soc_runtime_calc_hw(rtd, &hw, stream);
+		if (ret == 0)
+			break;
+	}
+
+	if (ret < 0) {
+		dev_err(rtd->dev, "simple-card: no valid dai_link params\n");
+		return ret;
+	}
+
+	params = devm_kzalloc(rtd->dev, sizeof(*params), GFP_KERNEL);
+	if (!params)
+		return -ENOMEM;
+
+	params->formats = hw.formats;
+	params->rates = hw.rates;
+	params->rate_min = hw.rate_min;
+	params->rate_max = hw.rate_max;
+	params->channels_min = hw.channels_min;
+	params->channels_max = hw.channels_max;
+
+	dai_link->params = params;
+	dai_link->num_params = 1;
+
+	return 0;
+}
+
+int asoc_simple_dai_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+	struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
+	struct asoc_simple_dai *dai;
+	int i, ret;
+
+	for_each_prop_dai_codec(props, i, dai) {
+		ret = asoc_simple_init_dai(asoc_rtd_to_codec(rtd, i), dai);
+		if (ret < 0)
+			return ret;
+	}
+	for_each_prop_dai_cpu(props, i, dai) {
+		ret = asoc_simple_init_dai(asoc_rtd_to_cpu(rtd, i), dai);
+		if (ret < 0)
+			return ret;
+	}
+
+	ret = asoc_simple_init_for_codec2codec(rtd, props);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_dai_init);
+
+void asoc_simple_canonicalize_platform(struct snd_soc_dai_link_component *platforms,
+				       struct snd_soc_dai_link_component *cpus)
+{
+	/* Assumes platform == cpu */
+	if (!platforms->of_node)
+		platforms->of_node = cpus->of_node;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_platform);
+
+void asoc_simple_canonicalize_cpu(struct snd_soc_dai_link_component *cpus,
+				  int is_single_links)
+{
+	/*
+	 * In 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 if cpu_args
+	 * was 0. See:
+	 *	fmt_single_name()
+	 *	fmt_multiple_name()
+	 */
+	if (is_single_links)
+		cpus->dai_name = NULL;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_cpu);
+
+void asoc_simple_clean_reference(struct snd_soc_card *card)
+{
+	struct snd_soc_dai_link *dai_link;
+	struct snd_soc_dai_link_component *cpu;
+	struct snd_soc_dai_link_component *codec;
+	int i, j;
+
+	for_each_card_prelinks(card, i, dai_link) {
+		for_each_link_cpus(dai_link, j, cpu)
+			of_node_put(cpu->of_node);
+		for_each_link_codecs(dai_link, j, codec)
+			of_node_put(codec->of_node);
+	}
+}
+EXPORT_SYMBOL_GPL(asoc_simple_clean_reference);
+
+int asoc_simple_parse_routing(struct snd_soc_card *card,
+			      char *prefix)
+{
+	struct device_node *node = card->dev->of_node;
+	char prop[128];
+
+	if (!prefix)
+		prefix = "";
+
+	snprintf(prop, sizeof(prop), "%s%s", prefix, "routing");
+
+	if (!of_property_read_bool(node, prop))
+		return 0;
+
+	return snd_soc_of_parse_audio_routing(card, prop);
+}
+EXPORT_SYMBOL_GPL(asoc_simple_parse_routing);
+
+int asoc_simple_parse_widgets(struct snd_soc_card *card,
+			      char *prefix)
+{
+	struct device_node *node = card->dev->of_node;
+	char prop[128];
+
+	if (!prefix)
+		prefix = "";
+
+	snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets");
+
+	if (of_property_read_bool(node, prop))
+		return snd_soc_of_parse_audio_simple_widgets(card, prop);
+
+	/* no widgets is not error */
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_parse_widgets);
+
+int asoc_simple_parse_pin_switches(struct snd_soc_card *card,
+				   char *prefix)
+{
+	char prop[128];
+
+	if (!prefix)
+		prefix = "";
+
+	snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches");
+
+	return snd_soc_of_parse_pin_switches(card, prop);
+}
+EXPORT_SYMBOL_GPL(asoc_simple_parse_pin_switches);
+
+int asoc_simple_init_jack(struct snd_soc_card *card,
+			  struct asoc_simple_jack *sjack,
+			  int is_hp, char *prefix,
+			  char *pin)
+{
+	struct device *dev = card->dev;
+	struct gpio_desc *desc;
+	char prop[128];
+	char *pin_name;
+	char *gpio_name;
+	int mask;
+	int error;
+
+	if (!prefix)
+		prefix = "";
+
+	sjack->gpio.gpio = -ENOENT;
+
+	if (is_hp) {
+		snprintf(prop, sizeof(prop), "%shp-det", prefix);
+		pin_name	= pin ? pin : "Headphones";
+		gpio_name	= "Headphone detection";
+		mask		= SND_JACK_HEADPHONE;
+	} else {
+		snprintf(prop, sizeof(prop), "%smic-det", prefix);
+		pin_name	= pin ? pin : "Mic Jack";
+		gpio_name	= "Mic detection";
+		mask		= SND_JACK_MICROPHONE;
+	}
+
+	desc = gpiod_get_optional(dev, prop, GPIOD_IN);
+	error = PTR_ERR_OR_ZERO(desc);
+	if (error)
+		return error;
+
+	if (desc) {
+		error = gpiod_set_consumer_name(desc, gpio_name);
+		if (error)
+			return error;
+
+		sjack->pin.pin		= pin_name;
+		sjack->pin.mask		= mask;
+
+		sjack->gpio.name	= gpio_name;
+		sjack->gpio.report	= mask;
+		sjack->gpio.desc	= desc;
+		sjack->gpio.debounce_time = 150;
+
+		snd_soc_card_jack_new_pins(card, pin_name, mask, &sjack->jack,
+					   &sjack->pin, 1);
+
+		snd_soc_jack_add_gpios(&sjack->jack, 1, &sjack->gpio);
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_init_jack);
+
+int asoc_simple_init_priv(struct asoc_simple_priv *priv,
+			  struct link_info *li)
+{
+	struct snd_soc_card *card = simple_priv_to_card(priv);
+	struct device *dev = simple_priv_to_dev(priv);
+	struct snd_soc_dai_link *dai_link;
+	struct simple_dai_props *dai_props;
+	struct asoc_simple_dai *dais;
+	struct snd_soc_dai_link_component *dlcs;
+	struct snd_soc_codec_conf *cconf = NULL;
+	int i, dai_num = 0, dlc_num = 0, cnf_num = 0;
+
+	dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
+	dai_link  = devm_kcalloc(dev, li->link, sizeof(*dai_link),  GFP_KERNEL);
+	if (!dai_props || !dai_link)
+		return -ENOMEM;
+
+	/*
+	 * dais (= CPU+Codec)
+	 * dlcs (= CPU+Codec+Platform)
+	 */
+	for (i = 0; i < li->link; i++) {
+		int cc = li->num[i].cpus + li->num[i].codecs;
+
+		dai_num += cc;
+		dlc_num += cc + li->num[i].platforms;
+
+		if (!li->num[i].cpus)
+			cnf_num += li->num[i].codecs;
+	}
+
+	dais = devm_kcalloc(dev, dai_num, sizeof(*dais), GFP_KERNEL);
+	dlcs = devm_kcalloc(dev, dlc_num, sizeof(*dlcs), GFP_KERNEL);
+	if (!dais || !dlcs)
+		return -ENOMEM;
+
+	if (cnf_num) {
+		cconf = devm_kcalloc(dev, cnf_num, sizeof(*cconf), GFP_KERNEL);
+		if (!cconf)
+			return -ENOMEM;
+	}
+
+	dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
+		li->link, dai_num, cnf_num);
+
+	/* dummy CPU/Codec */
+	priv->dummy.of_node	= NULL;
+	priv->dummy.dai_name	= "snd-soc-dummy-dai";
+	priv->dummy.name	= "snd-soc-dummy";
+
+	priv->dai_props		= dai_props;
+	priv->dai_link		= dai_link;
+	priv->dais		= dais;
+	priv->dlcs		= dlcs;
+	priv->codec_conf	= cconf;
+
+	card->dai_link		= priv->dai_link;
+	card->num_links		= li->link;
+	card->codec_conf	= cconf;
+	card->num_configs	= cnf_num;
+
+	for (i = 0; i < li->link; i++) {
+		if (li->num[i].cpus) {
+			/* Normal CPU */
+			dai_props[i].cpus	=
+			dai_link[i].cpus	= dlcs;
+			dai_props[i].num.cpus	=
+			dai_link[i].num_cpus	= li->num[i].cpus;
+			dai_props[i].cpu_dai	= dais;
+
+			dlcs += li->num[i].cpus;
+			dais += li->num[i].cpus;
+		} else {
+			/* DPCM Be's CPU = dummy */
+			dai_props[i].cpus	=
+			dai_link[i].cpus	= &priv->dummy;
+			dai_props[i].num.cpus	=
+			dai_link[i].num_cpus	= 1;
+		}
+
+		if (li->num[i].codecs) {
+			/* Normal Codec */
+			dai_props[i].codecs	=
+			dai_link[i].codecs	= dlcs;
+			dai_props[i].num.codecs	=
+			dai_link[i].num_codecs	= li->num[i].codecs;
+			dai_props[i].codec_dai	= dais;
+
+			dlcs += li->num[i].codecs;
+			dais += li->num[i].codecs;
+
+			if (!li->num[i].cpus) {
+				/* DPCM Be's Codec */
+				dai_props[i].codec_conf = cconf;
+				cconf += li->num[i].codecs;
+			}
+		} else {
+			/* DPCM Fe's Codec = dummy */
+			dai_props[i].codecs	=
+			dai_link[i].codecs	= &priv->dummy;
+			dai_props[i].num.codecs	=
+			dai_link[i].num_codecs	= 1;
+		}
+
+		if (li->num[i].platforms) {
+			/* Have Platform */
+			dai_props[i].platforms		=
+			dai_link[i].platforms		= dlcs;
+			dai_props[i].num.platforms	=
+			dai_link[i].num_platforms	= li->num[i].platforms;
+
+			dlcs += li->num[i].platforms;
+		} else {
+			/* Doesn't have Platform */
+			dai_props[i].platforms		=
+			dai_link[i].platforms		= NULL;
+			dai_props[i].num.platforms	=
+			dai_link[i].num_platforms	= 0;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_init_priv);
+
+int asoc_simple_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+	asoc_simple_clean_reference(card);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_remove);
+
+int asoc_graph_card_probe(struct snd_soc_card *card)
+{
+	struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card);
+	int ret;
+
+	ret = asoc_simple_init_hp(card, &priv->hp_jack, NULL);
+	if (ret < 0)
+		return ret;
+
+	ret = asoc_simple_init_mic(card, &priv->mic_jack, NULL);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_graph_card_probe);
+
+int asoc_graph_is_ports0(struct device_node *np)
+{
+	struct device_node *port, *ports, *ports0, *top;
+	int ret;
+
+	/* np is "endpoint" or "port" */
+	if (of_node_name_eq(np, "endpoint")) {
+		port = of_get_parent(np);
+	} else {
+		port = np;
+		of_node_get(port);
+	}
+
+	ports	= of_get_parent(port);
+	top	= of_get_parent(ports);
+	ports0	= of_get_child_by_name(top, "ports");
+
+	ret = ports0 == ports;
+
+	of_node_put(port);
+	of_node_put(ports);
+	of_node_put(ports0);
+	of_node_put(top);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(asoc_graph_is_ports0);
+
+/* Module information */
+MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
+MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
+MODULE_LICENSE("GPL v2");