[linux.git] / sound / soc / meson / meson-card-utils.c

// SPDX-License-Identifier: GPL-2.0
//
// Copyright (c) 2020 BayLibre, SAS.
// Author: Jerome Brunet <[email protected]>

#include <linux/module.h>
#include <linux/of_platform.h>
#include <sound/soc.h>

#include "meson-card.h"

int meson_card_i2s_set_sysclk(struct snd_pcm_substream *substream,
			      struct snd_pcm_hw_params *params,
			      unsigned int mclk_fs)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai;
	unsigned int mclk;
	int ret, i;

	if (!mclk_fs)
		return 0;

	mclk = params_rate(params) * mclk_fs;

	for_each_rtd_codec_dais(rtd, i, codec_dai) {
		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
					     SND_SOC_CLOCK_IN);
		if (ret && ret != -ENOTSUPP)
			return ret;
	}

	ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), 0, mclk,
				     SND_SOC_CLOCK_OUT);
	if (ret && ret != -ENOTSUPP)
		return ret;

	return 0;
}
EXPORT_SYMBOL_GPL(meson_card_i2s_set_sysclk);

int meson_card_reallocate_links(struct snd_soc_card *card,
				unsigned int num_links)
{
	struct meson_card *priv = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai_link *links;
	void **ldata;

	links = krealloc(priv->card.dai_link,
			 num_links * sizeof(*priv->card.dai_link),
			 GFP_KERNEL | __GFP_ZERO);
	ldata = krealloc(priv->link_data,
			 num_links * sizeof(*priv->link_data),
			 GFP_KERNEL | __GFP_ZERO);

	if (!links || !ldata) {
		dev_err(priv->card.dev, "failed to allocate links\n");
		return -ENOMEM;
	}

	priv->card.dai_link = links;
	priv->link_data = ldata;
	priv->card.num_links = num_links;
	return 0;
}
EXPORT_SYMBOL_GPL(meson_card_reallocate_links);

int meson_card_parse_dai(struct snd_soc_card *card,
			 struct device_node *node,
			 struct device_node **dai_of_node,
			 const char **dai_name)
{
	struct of_phandle_args args;
	int ret;

	if (!dai_name || !dai_of_node || !node)
		return -EINVAL;

	ret = of_parse_phandle_with_args(node, "sound-dai",
					 "#sound-dai-cells", 0, &args);
	if (ret) {
		if (ret != -EPROBE_DEFER)
			dev_err(card->dev, "can't parse dai %d\n", ret);
		return ret;
	}
	*dai_of_node = args.np;

	return snd_soc_get_dai_name(&args, dai_name);
}
EXPORT_SYMBOL_GPL(meson_card_parse_dai);

static int meson_card_set_link_name(struct snd_soc_card *card,
				    struct snd_soc_dai_link *link,
				    struct device_node *node,
				    const char *prefix)
{
	char *name = devm_kasprintf(card->dev, GFP_KERNEL, "%s.%s",
				    prefix, node->full_name);
	if (!name)
		return -ENOMEM;

	link->name = name;
	link->stream_name = name;

	return 0;
}

unsigned int meson_card_parse_daifmt(struct device_node *node,
				     struct device_node *cpu_node)
{
	struct device_node *bitclkmaster = NULL;
	struct device_node *framemaster = NULL;
	unsigned int daifmt;

	daifmt = snd_soc_of_parse_daifmt(node, DT_PREFIX,
					 &bitclkmaster, &framemaster);
	daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;

	/* If no master is provided, default to cpu master */
	if (!bitclkmaster || bitclkmaster == cpu_node) {
		daifmt |= (!framemaster || framemaster == cpu_node) ?
			SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBS_CFM;
	} else {
		daifmt |= (!framemaster || framemaster == cpu_node) ?
			SND_SOC_DAIFMT_CBM_CFS : SND_SOC_DAIFMT_CBM_CFM;
	}

	of_node_put(bitclkmaster);
	of_node_put(framemaster);

	return daifmt;
}
EXPORT_SYMBOL_GPL(meson_card_parse_daifmt);

int meson_card_set_be_link(struct snd_soc_card *card,
			   struct snd_soc_dai_link *link,
			   struct device_node *node)
{
	struct snd_soc_dai_link_component *codec;
	struct device_node *np;
	int ret, num_codecs;

	link->no_pcm = 1;
	link->dpcm_playback = 1;
	link->dpcm_capture = 1;

	num_codecs = of_get_child_count(node);
	if (!num_codecs) {
		dev_err(card->dev, "be link %s has no codec\n",
			node->full_name);
		return -EINVAL;
	}

	codec = devm_kcalloc(card->dev, num_codecs, sizeof(*codec), GFP_KERNEL);
	if (!codec)
		return -ENOMEM;

	link->codecs = codec;
	link->num_codecs = num_codecs;

	for_each_child_of_node(node, np) {
		ret = meson_card_parse_dai(card, np, &codec->of_node,
					   &codec->dai_name);
		if (ret) {
			of_node_put(np);
			return ret;
		}

		codec++;
	}

	ret = meson_card_set_link_name(card, link, node, "be");
	if (ret)
		dev_err(card->dev, "error setting %pOFn link name\n", np);

	return ret;
}
EXPORT_SYMBOL_GPL(meson_card_set_be_link);

int meson_card_set_fe_link(struct snd_soc_card *card,
			   struct snd_soc_dai_link *link,
			   struct device_node *node,
			   bool is_playback)
{
	struct snd_soc_dai_link_component *codec;

	codec = devm_kzalloc(card->dev, sizeof(*codec), GFP_KERNEL);
	if (!codec)
		return -ENOMEM;

	link->codecs = codec;
	link->num_codecs = 1;

	link->dynamic = 1;
	link->dpcm_merged_format = 1;
	link->dpcm_merged_chan = 1;
	link->dpcm_merged_rate = 1;
	link->codecs->dai_name = "snd-soc-dummy-dai";
	link->codecs->name = "snd-soc-dummy";

	if (is_playback)
		link->dpcm_playback = 1;
	else
		link->dpcm_capture = 1;

	return meson_card_set_link_name(card, link, node, "fe");
}
EXPORT_SYMBOL_GPL(meson_card_set_fe_link);

static int meson_card_add_links(struct snd_soc_card *card)
{
	struct meson_card *priv = snd_soc_card_get_drvdata(card);
	struct device_node *node = card->dev->of_node;
	struct device_node *np;
	int num, i, ret;

	num = of_get_child_count(node);
	if (!num) {
		dev_err(card->dev, "card has no links\n");
		return -EINVAL;
	}

	ret = meson_card_reallocate_links(card, num);
	if (ret)
		return ret;

	i = 0;
	for_each_child_of_node(node, np) {
		ret = priv->match_data->add_link(card, np, &i);
		if (ret) {
			of_node_put(np);
			return ret;
		}

		i++;
	}

	return 0;
}

static int meson_card_parse_of_optional(struct snd_soc_card *card,
					const char *propname,
					int (*func)(struct snd_soc_card *c,
						    const char *p))
{
	/* If property is not provided, don't fail ... */
	if (!of_property_read_bool(card->dev->of_node, propname))
		return 0;

	/* ... but do fail if it is provided and the parsing fails */
	return func(card, propname);
}

static int meson_card_add_aux_devices(struct snd_soc_card *card)
{
	struct device_node *node = card->dev->of_node;
	struct snd_soc_aux_dev *aux;
	int num, i;

	num = of_count_phandle_with_args(node, "audio-aux-devs", NULL);
	if (num == -ENOENT) {
		return 0;
	} else if (num < 0) {
		dev_err(card->dev, "error getting auxiliary devices: %d\n",
			num);
		return num;
	}

	aux = devm_kcalloc(card->dev, num, sizeof(*aux), GFP_KERNEL);
	if (!aux)
		return -ENOMEM;
	card->aux_dev = aux;
	card->num_aux_devs = num;

	for_each_card_pre_auxs(card, i, aux) {
		aux->dlc.of_node =
			of_parse_phandle(node, "audio-aux-devs", i);
		if (!aux->dlc.of_node)
			return -EINVAL;
	}

	return 0;
}

static void meson_card_clean_references(struct meson_card *priv)
{
	struct snd_soc_card *card = &priv->card;
	struct snd_soc_dai_link *link;
	struct snd_soc_dai_link_component *codec;
	struct snd_soc_aux_dev *aux;
	int i, j;

	if (card->dai_link) {
		for_each_card_prelinks(card, i, link) {
			if (link->cpus)
				of_node_put(link->cpus->of_node);
			for_each_link_codecs(link, j, codec)
				of_node_put(codec->of_node);
		}
	}

	if (card->aux_dev) {
		for_each_card_pre_auxs(card, i, aux)
			of_node_put(aux->dlc.of_node);
	}

	kfree(card->dai_link);
	kfree(priv->link_data);
}

int meson_card_probe(struct platform_device *pdev)
{
	const struct meson_card_match_data *data;
	struct device *dev = &pdev->dev;
	struct meson_card *priv;
	int ret;

	data = of_device_get_match_data(dev);
	if (!data) {
		dev_err(dev, "failed to match device\n");
		return -ENODEV;
	}

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	platform_set_drvdata(pdev, priv);
	snd_soc_card_set_drvdata(&priv->card, priv);

	priv->card.owner = THIS_MODULE;
	priv->card.dev = dev;
	priv->match_data = data;

	ret = snd_soc_of_parse_card_name(&priv->card, "model");
	if (ret < 0)
		return ret;

	ret = meson_card_parse_of_optional(&priv->card, "audio-routing",
					   snd_soc_of_parse_audio_routing);
	if (ret) {
		dev_err(dev, "error while parsing routing\n");
		return ret;
	}

	ret = meson_card_parse_of_optional(&priv->card, "audio-widgets",
					   snd_soc_of_parse_audio_simple_widgets);
	if (ret) {
		dev_err(dev, "error while parsing widgets\n");
		return ret;
	}

	ret = meson_card_add_links(&priv->card);
	if (ret)
		goto out_err;

	ret = meson_card_add_aux_devices(&priv->card);
	if (ret)
		goto out_err;

	ret = devm_snd_soc_register_card(dev, &priv->card);
	if (ret)
		goto out_err;

	return 0;

out_err:
	meson_card_clean_references(priv);
	return ret;
}
EXPORT_SYMBOL_GPL(meson_card_probe);

int meson_card_remove(struct platform_device *pdev)
{
	struct meson_card *priv = platform_get_drvdata(pdev);

	meson_card_clean_references(priv);

	return 0;
}
EXPORT_SYMBOL_GPL(meson_card_remove);

MODULE_DESCRIPTION("Amlogic Sound Card Utils");
MODULE_AUTHOR("Jerome Brunet <[email protected]>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
aa9c3b72 JB	1	// SPDX-License-Identifier: GPL-2.0
	2	//
	3	// Copyright (c) 2020 BayLibre, SAS.
	4	// Author: Jerome Brunet <[email protected]>
	5
	6	#include <linux/module.h>
	7	#include <linux/of_platform.h>
	8	#include <sound/soc.h>
	9
	10	#include "meson-card.h"
	11
	12	int meson_card_i2s_set_sysclk(struct snd_pcm_substream *substream,
	13	struct snd_pcm_hw_params *params,
	14	unsigned int mclk_fs)
	15	{
	16	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	17	struct snd_soc_dai *codec_dai;
	18	unsigned int mclk;
	19	int ret, i;
	20
	21	if (!mclk_fs)
	22	return 0;
	23
	24	mclk = params_rate(params) * mclk_fs;
	25
b5c52f58	26	for_each_rtd_codec_dais(rtd, i, codec_dai) {
aa9c3b72 JB	27	ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
	28	SND_SOC_CLOCK_IN);
	29	if (ret && ret != -ENOTSUPP)
	30	return ret;
	31	}
	32
385a5c60	33	ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), 0, mclk,
aa9c3b72 JB	34	SND_SOC_CLOCK_OUT);
	35	if (ret && ret != -ENOTSUPP)
	36	return ret;
	37
	38	return 0;
	39	}
	40	EXPORT_SYMBOL_GPL(meson_card_i2s_set_sysclk);
	41
	42	int meson_card_reallocate_links(struct snd_soc_card *card,
	43	unsigned int num_links)
	44	{
	45	struct meson_card *priv = snd_soc_card_get_drvdata(card);
	46	struct snd_soc_dai_link *links;
	47	void **ldata;
	48
	49	links = krealloc(priv->card.dai_link,
	50	num_links * sizeof(*priv->card.dai_link),
	51	GFP_KERNEL \| __GFP_ZERO);
	52	ldata = krealloc(priv->link_data,
	53	num_links * sizeof(*priv->link_data),
	54	GFP_KERNEL \| __GFP_ZERO);
	55
	56	if (!links \|\| !ldata) {
	57	dev_err(priv->card.dev, "failed to allocate links\n");
	58	return -ENOMEM;
	59	}
	60
	61	priv->card.dai_link = links;
	62	priv->link_data = ldata;
	63	priv->card.num_links = num_links;
	64	return 0;
	65	}
	66	EXPORT_SYMBOL_GPL(meson_card_reallocate_links);
	67
	68	int meson_card_parse_dai(struct snd_soc_card *card,
	69	struct device_node *node,
	70	struct device_node **dai_of_node,
	71	const char **dai_name)
	72	{
	73	struct of_phandle_args args;
	74	int ret;
	75
	76	if (!dai_name \|\| !dai_of_node \|\| !node)
	77	return -EINVAL;
	78
	79	ret = of_parse_phandle_with_args(node, "sound-dai",
	80	"#sound-dai-cells", 0, &args);
	81	if (ret) {
	82	if (ret != -EPROBE_DEFER)
	83	dev_err(card->dev, "can't parse dai %d\n", ret);
	84	return ret;
	85	}
	86	*dai_of_node = args.np;
	87
	88	return snd_soc_get_dai_name(&args, dai_name);
	89	}
	90	EXPORT_SYMBOL_GPL(meson_card_parse_dai);
	91
	92	static int meson_card_set_link_name(struct snd_soc_card *card,
	93	struct snd_soc_dai_link *link,
	94	struct device_node *node,
	95	const char *prefix)
	96	{
	97	char *name = devm_kasprintf(card->dev, GFP_KERNEL, "%s.%s",
98	prefix, node->full_name);
99	if (!name)
100	return -ENOMEM;
101
102	link->name = name;
103	link->stream_name = name;
104
105	return 0;
106	}
107
108	unsigned int meson_card_parse_daifmt(struct device_node *node,
109	struct device_node *cpu_node)
110	{
111	struct device_node *bitclkmaster = NULL;
112	struct device_node *framemaster = NULL;
113	unsigned int daifmt;
114
115	daifmt = snd_soc_of_parse_daifmt(node, DT_PREFIX,
116	&bitclkmaster, &framemaster);
117	daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
118
119	/* If no master is provided, default to cpu master */
120	if (!bitclkmaster \|\| bitclkmaster == cpu_node) {
121	daifmt \|= (!framemaster \|\| framemaster == cpu_node) ?
122	SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBS_CFM;
123	} else {
124	daifmt \|= (!framemaster \|\| framemaster == cpu_node) ?
125	SND_SOC_DAIFMT_CBM_CFS : SND_SOC_DAIFMT_CBM_CFM;
126	}
127
128	of_node_put(bitclkmaster);
129	of_node_put(framemaster);
130
131	return daifmt;
132	}
133	EXPORT_SYMBOL_GPL(meson_card_parse_daifmt);
134
135	int meson_card_set_be_link(struct snd_soc_card *card,
136	struct snd_soc_dai_link *link,
137	struct device_node *node)
138	{
139	struct snd_soc_dai_link_component *codec;
140	struct device_node *np;
141	int ret, num_codecs;
142
143	link->no_pcm = 1;
144	link->dpcm_playback = 1;
145	link->dpcm_capture = 1;
146
147	num_codecs = of_get_child_count(node);
148	if (!num_codecs) {
149	dev_err(card->dev, "be link %s has no codec\n",
150	node->full_name);
151	return -EINVAL;
152	}
153
154	codec = devm_kcalloc(card->dev, num_codecs, sizeof(*codec), GFP_KERNEL);
155	if (!codec)
156	return -ENOMEM;
157
158	link->codecs = codec;
159	link->num_codecs = num_codecs;
160
161	for_each_child_of_node(node, np) {
162	ret = meson_card_parse_dai(card, np, &codec->of_node,
163	&codec->dai_name);
164	if (ret) {
165	of_node_put(np);
166	return ret;
167	}
168
169	codec++;
170	}
171
172	ret = meson_card_set_link_name(card, link, node, "be");
173	if (ret)
174	dev_err(card->dev, "error setting %pOFn link name\n", np);
175
176	return ret;
177	}
178	EXPORT_SYMBOL_GPL(meson_card_set_be_link);
179
180	int meson_card_set_fe_link(struct snd_soc_card *card,
181	struct snd_soc_dai_link *link,
182	struct device_node *node,
183	bool is_playback)
184	{
185	struct snd_soc_dai_link_component *codec;
186
187	codec = devm_kzalloc(card->dev, sizeof(*codec), GFP_KERNEL);
188	if (!codec)
189	return -ENOMEM;
190
191	link->codecs = codec;
192	link->num_codecs = 1;
193
194	link->dynamic = 1;
195	link->dpcm_merged_format = 1;
196	link->dpcm_merged_chan = 1;
197	link->dpcm_merged_rate = 1;
198	link->codecs->dai_name = "snd-soc-dummy-dai";
199	link->codecs->name = "snd-soc-dummy";
200
201	if (is_playback)
202	link->dpcm_playback = 1;
203	else
204	link->dpcm_capture = 1;
205
206	return meson_card_set_link_name(card, link, node, "fe");
207	}
208	EXPORT_SYMBOL_GPL(meson_card_set_fe_link);
209
210	static int meson_card_add_links(struct snd_soc_card *card)
211	{
212	struct meson_card *priv = snd_soc_card_get_drvdata(card);
213	struct device_node *node = card->dev->of_node;
214	struct device_node *np;
215	int num, i, ret;
216
217	num = of_get_child_count(node);
218	if (!num) {
219	dev_err(card->dev, "card has no links\n");
220	return -EINVAL;
221	}
222
223	ret = meson_card_reallocate_links(card, num);
224	if (ret)
225	return ret;
226
227	i = 0;
228	for_each_child_of_node(node, np) {
229	ret = priv->match_data->add_link(card, np, &i);
230	if (ret) {
231	of_node_put(np);
232	return ret;
233	}
234
235	i++;
236	}
237
238	return 0;
239	}
240
241	static int meson_card_parse_of_optional(struct snd_soc_card *card,
242	const char *propname,
243	int (func)(struct snd_soc_card c,
244	const char *p))
245	{
246	/* If property is not provided, don't fail ... */
247	if (!of_property_read_bool(card->dev->of_node, propname))
248	return 0;
249
250	/* ... but do fail if it is provided and the parsing fails */
251	return func(card, propname);
252	}
253
254	static int meson_card_add_aux_devices(struct snd_soc_card *card)
255	{
256	struct device_node *node = card->dev->of_node;
257	struct snd_soc_aux_dev *aux;
258	int num, i;
259
260	num = of_count_phandle_with_args(node, "audio-aux-devs", NULL);
261	if (num == -ENOENT) {
262	return 0;
263	} else if (num < 0) {
264	dev_err(card->dev, "error getting auxiliary devices: %d\n",
265	num);
266	return num;
267	}
268
269	aux = devm_kcalloc(card->dev, num, sizeof(*aux), GFP_KERNEL);
270	if (!aux)
271	return -ENOMEM;
272	card->aux_dev = aux;
273	card->num_aux_devs = num;
274
275	for_each_card_pre_auxs(card, i, aux) {
276	aux->dlc.of_node =
277	of_parse_phandle(node, "audio-aux-devs", i);
278	if (!aux->dlc.of_node)
279	return -EINVAL;
280	}
281
282	return 0;
283	}
284
285	static void meson_card_clean_references(struct meson_card *priv)
286	{
287	struct snd_soc_card *card = &priv->card;
288	struct snd_soc_dai_link *link;
289	struct snd_soc_dai_link_component *codec;
290	struct snd_soc_aux_dev *aux;
291	int i, j;
292
293	if (card->dai_link) {
294	for_each_card_prelinks(card, i, link) {
295	if (link->cpus)
296	of_node_put(link->cpus->of_node);
297	for_each_link_codecs(link, j, codec)
298	of_node_put(codec->of_node);
299	}
300	}
301
302	if (card->aux_dev) {
303	for_each_card_pre_auxs(card, i, aux)
304	of_node_put(aux->dlc.of_node);
305	}
306
307	kfree(card->dai_link);
308	kfree(priv->link_data);
309	}
310
311	int meson_card_probe(struct platform_device *pdev)
312	{
313	const struct meson_card_match_data *data;
314	struct device *dev = &pdev->dev;
315	struct meson_card *priv;
316	int ret;
317
318	data = of_device_get_match_data(dev);
319	if (!data) {
320	dev_err(dev, "failed to match device\n");
321	return -ENODEV;
322	}
323
324	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
325	if (!priv)
326	return -ENOMEM;
327
328	platform_set_drvdata(pdev, priv);
329	snd_soc_card_set_drvdata(&priv->card, priv);
330
331	priv->card.owner = THIS_MODULE;
332	priv->card.dev = dev;
333	priv->match_data = data;
334
335	ret = snd_soc_of_parse_card_name(&priv->card, "model");
336	if (ret < 0)
337	return ret;
338
339	ret = meson_card_parse_of_optional(&priv->card, "audio-routing",
340	snd_soc_of_parse_audio_routing);
341	if (ret) {
342	dev_err(dev, "error while parsing routing\n");
343	return ret;
344	}
345
346	ret = meson_card_parse_of_optional(&priv->card, "audio-widgets",
347	snd_soc_of_parse_audio_simple_widgets);
348	if (ret) {
349	dev_err(dev, "error while parsing widgets\n");
350	return ret;
351	}
352
353	ret = meson_card_add_links(&priv->card);
354	if (ret)
355	goto out_err;
356
357	ret = meson_card_add_aux_devices(&priv->card);
358	if (ret)
359	goto out_err;
360
361	ret = devm_snd_soc_register_card(dev, &priv->card);
362	if (ret)
363	goto out_err;
364
365	return 0;
366
367	out_err:
368	meson_card_clean_references(priv);
369	return ret;
370	}
371	EXPORT_SYMBOL_GPL(meson_card_probe);
372
373	int meson_card_remove(struct platform_device *pdev)
374	{
375	struct meson_card *priv = platform_get_drvdata(pdev);
376
377	meson_card_clean_references(priv);
378
379	return 0;
380	}
381	EXPORT_SYMBOL_GPL(meson_card_remove);
382
383	MODULE_DESCRIPTION("Amlogic Sound Card Utils");
384	MODULE_AUTHOR("Jerome Brunet <[email protected]>");
385	MODULE_LICENSE("GPL v2");