1 // SPDX-License-Identifier: GPL-2.0
5 // Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
8 #include <linux/gpio.h>
9 #include <linux/gpio/consumer.h>
10 #include <linux/module.h>
12 #include <linux/of_gpio.h>
13 #include <linux/of_graph.h>
14 #include <sound/jack.h>
15 #include <sound/simple_card_utils.h>
17 void asoc_simple_convert_fixup(struct asoc_simple_data *data,
18 struct snd_pcm_hw_params *params)
20 struct snd_interval *rate = hw_param_interval(params,
21 SNDRV_PCM_HW_PARAM_RATE);
22 struct snd_interval *channels = hw_param_interval(params,
23 SNDRV_PCM_HW_PARAM_CHANNELS);
25 if (data->convert_rate)
27 rate->max = data->convert_rate;
29 if (data->convert_channels)
31 channels->max = data->convert_channels;
33 EXPORT_SYMBOL_GPL(asoc_simple_convert_fixup);
35 void asoc_simple_parse_convert(struct device *dev,
36 struct device_node *np,
38 struct asoc_simple_data *data)
45 /* sampling rate convert */
46 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate");
47 of_property_read_u32(np, prop, &data->convert_rate);
49 /* channels transfer */
50 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels");
51 of_property_read_u32(np, prop, &data->convert_channels);
53 EXPORT_SYMBOL_GPL(asoc_simple_parse_convert);
55 int asoc_simple_parse_daifmt(struct device *dev,
56 struct device_node *node,
57 struct device_node *codec,
61 struct device_node *bitclkmaster = NULL;
62 struct device_node *framemaster = NULL;
65 daifmt = snd_soc_of_parse_daifmt(node, prefix,
66 &bitclkmaster, &framemaster);
67 daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
69 if (!bitclkmaster && !framemaster) {
71 * No dai-link level and master setting was not found from
72 * sound node level, revert back to legacy DT parsing and
73 * take the settings from codec node.
75 dev_dbg(dev, "Revert to legacy daifmt parsing\n");
77 daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
78 (daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
80 if (codec == bitclkmaster)
81 daifmt |= (codec == framemaster) ?
82 SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
84 daifmt |= (codec == framemaster) ?
85 SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
88 of_node_put(bitclkmaster);
89 of_node_put(framemaster);
95 EXPORT_SYMBOL_GPL(asoc_simple_parse_daifmt);
97 int asoc_simple_set_dailink_name(struct device *dev,
98 struct snd_soc_dai_link *dai_link,
106 name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap);
112 dai_link->name = name;
113 dai_link->stream_name = name;
118 EXPORT_SYMBOL_GPL(asoc_simple_set_dailink_name);
120 int asoc_simple_parse_card_name(struct snd_soc_card *card,
128 /* Parse the card name from DT */
129 ret = snd_soc_of_parse_card_name(card, "label");
130 if (ret < 0 || !card->name) {
133 snprintf(prop, sizeof(prop), "%sname", prefix);
134 ret = snd_soc_of_parse_card_name(card, prop);
139 if (!card->name && card->dai_link)
140 card->name = card->dai_link->name;
144 EXPORT_SYMBOL_GPL(asoc_simple_parse_card_name);
146 static int asoc_simple_clk_enable(struct asoc_simple_dai *dai)
149 return clk_prepare_enable(dai->clk);
154 static void asoc_simple_clk_disable(struct asoc_simple_dai *dai)
157 clk_disable_unprepare(dai->clk);
160 int asoc_simple_parse_clk(struct device *dev,
161 struct device_node *node,
162 struct asoc_simple_dai *simple_dai,
163 struct snd_soc_dai_link_component *dlc)
169 * Parse dai->sysclk come from "clocks = <&xxx>"
170 * (if system has common clock)
171 * or "system-clock-frequency = <xxx>"
172 * or device's module clock.
174 clk = devm_get_clk_from_child(dev, node, NULL);
176 simple_dai->sysclk = clk_get_rate(clk);
178 simple_dai->clk = clk;
179 } else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
180 simple_dai->sysclk = val;
182 clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
184 simple_dai->sysclk = clk_get_rate(clk);
187 if (of_property_read_bool(node, "system-clock-direction-out"))
188 simple_dai->clk_direction = SND_SOC_CLOCK_OUT;
192 EXPORT_SYMBOL_GPL(asoc_simple_parse_clk);
194 int asoc_simple_startup(struct snd_pcm_substream *substream)
196 struct snd_soc_pcm_runtime *rtd = substream->private_data;
197 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
198 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
201 ret = asoc_simple_clk_enable(dai_props->cpu_dai);
205 ret = asoc_simple_clk_enable(dai_props->codec_dai);
207 asoc_simple_clk_disable(dai_props->cpu_dai);
211 EXPORT_SYMBOL_GPL(asoc_simple_startup);
213 void asoc_simple_shutdown(struct snd_pcm_substream *substream)
215 struct snd_soc_pcm_runtime *rtd = substream->private_data;
216 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
217 struct simple_dai_props *dai_props =
218 simple_priv_to_props(priv, rtd->num);
220 asoc_simple_clk_disable(dai_props->cpu_dai);
222 asoc_simple_clk_disable(dai_props->codec_dai);
224 EXPORT_SYMBOL_GPL(asoc_simple_shutdown);
226 static int asoc_simple_set_clk_rate(struct asoc_simple_dai *simple_dai,
232 if (!simple_dai->clk)
235 if (clk_get_rate(simple_dai->clk) == rate)
238 return clk_set_rate(simple_dai->clk, rate);
241 int asoc_simple_hw_params(struct snd_pcm_substream *substream,
242 struct snd_pcm_hw_params *params)
244 struct snd_soc_pcm_runtime *rtd = substream->private_data;
245 struct snd_soc_dai *codec_dai = rtd->codec_dai;
246 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
247 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
248 struct simple_dai_props *dai_props =
249 simple_priv_to_props(priv, rtd->num);
250 unsigned int mclk, mclk_fs = 0;
253 if (dai_props->mclk_fs)
254 mclk_fs = dai_props->mclk_fs;
257 mclk = params_rate(params) * mclk_fs;
259 ret = asoc_simple_set_clk_rate(dai_props->codec_dai, mclk);
263 ret = asoc_simple_set_clk_rate(dai_props->cpu_dai, mclk);
267 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
269 if (ret && ret != -ENOTSUPP)
272 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
274 if (ret && ret != -ENOTSUPP)
281 EXPORT_SYMBOL_GPL(asoc_simple_hw_params);
283 int asoc_simple_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
284 struct snd_pcm_hw_params *params)
286 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
287 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
289 asoc_simple_convert_fixup(&dai_props->adata, params);
293 EXPORT_SYMBOL_GPL(asoc_simple_be_hw_params_fixup);
295 static int asoc_simple_init_dai(struct snd_soc_dai *dai,
296 struct asoc_simple_dai *simple_dai)
303 if (simple_dai->sysclk) {
304 ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
305 simple_dai->clk_direction);
306 if (ret && ret != -ENOTSUPP) {
307 dev_err(dai->dev, "simple-card: set_sysclk error\n");
312 if (simple_dai->slots) {
313 ret = snd_soc_dai_set_tdm_slot(dai,
314 simple_dai->tx_slot_mask,
315 simple_dai->rx_slot_mask,
317 simple_dai->slot_width);
318 if (ret && ret != -ENOTSUPP) {
319 dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
327 int asoc_simple_dai_init(struct snd_soc_pcm_runtime *rtd)
329 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
330 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
333 ret = asoc_simple_init_dai(rtd->codec_dai,
334 dai_props->codec_dai);
338 ret = asoc_simple_init_dai(rtd->cpu_dai,
345 EXPORT_SYMBOL_GPL(asoc_simple_dai_init);
347 void asoc_simple_canonicalize_platform(struct snd_soc_dai_link *dai_link)
349 /* Assumes platform == cpu */
350 if (!dai_link->platforms->of_node)
351 dai_link->platforms->of_node = dai_link->cpus->of_node;
354 * DPCM BE can be no platform.
355 * Alloced memory will be waste, but not leak.
357 if (!dai_link->platforms->of_node)
358 dai_link->num_platforms = 0;
360 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_platform);
362 void asoc_simple_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
366 * In soc_bind_dai_link() will check cpu name after
367 * of_node matching if dai_link has cpu_dai_name.
368 * but, it will never match if name was created by
369 * fmt_single_name() remove cpu_dai_name if cpu_args
372 * fmt_multiple_name()
375 dai_link->cpus->dai_name = NULL;
377 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_cpu);
379 int asoc_simple_clean_reference(struct snd_soc_card *card)
381 struct snd_soc_dai_link *dai_link;
384 for_each_card_prelinks(card, i, dai_link) {
385 of_node_put(dai_link->cpus->of_node);
386 of_node_put(dai_link->codecs->of_node);
390 EXPORT_SYMBOL_GPL(asoc_simple_clean_reference);
392 int asoc_simple_parse_routing(struct snd_soc_card *card,
395 struct device_node *node = card->dev->of_node;
401 snprintf(prop, sizeof(prop), "%s%s", prefix, "routing");
403 if (!of_property_read_bool(node, prop))
406 return snd_soc_of_parse_audio_routing(card, prop);
408 EXPORT_SYMBOL_GPL(asoc_simple_parse_routing);
410 int asoc_simple_parse_widgets(struct snd_soc_card *card,
413 struct device_node *node = card->dev->of_node;
419 snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets");
421 if (of_property_read_bool(node, prop))
422 return snd_soc_of_parse_audio_simple_widgets(card, prop);
424 /* no widgets is not error */
427 EXPORT_SYMBOL_GPL(asoc_simple_parse_widgets);
429 int asoc_simple_parse_pin_switches(struct snd_soc_card *card,
432 const unsigned int nb_controls_max = 16;
433 const char **strings, *control_name;
434 struct snd_kcontrol_new *controls;
435 struct device *dev = card->dev;
436 unsigned int i, nb_controls;
443 snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches");
445 if (!of_property_read_bool(dev->of_node, prop))
448 strings = devm_kcalloc(dev, nb_controls_max,
449 sizeof(*strings), GFP_KERNEL);
453 ret = of_property_read_string_array(dev->of_node, prop,
454 strings, nb_controls_max);
458 nb_controls = (unsigned int)ret;
460 controls = devm_kcalloc(dev, nb_controls,
461 sizeof(*controls), GFP_KERNEL);
465 for (i = 0; i < nb_controls; i++) {
466 control_name = devm_kasprintf(dev, GFP_KERNEL,
467 "%s Switch", strings[i]);
471 controls[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
472 controls[i].name = control_name;
473 controls[i].info = snd_soc_dapm_info_pin_switch;
474 controls[i].get = snd_soc_dapm_get_pin_switch;
475 controls[i].put = snd_soc_dapm_put_pin_switch;
476 controls[i].private_value = (unsigned long)strings[i];
479 card->controls = controls;
480 card->num_controls = nb_controls;
484 EXPORT_SYMBOL_GPL(asoc_simple_parse_pin_switches);
486 int asoc_simple_init_jack(struct snd_soc_card *card,
487 struct asoc_simple_jack *sjack,
488 int is_hp, char *prefix)
490 struct device *dev = card->dev;
491 enum of_gpio_flags flags;
501 sjack->gpio.gpio = -ENOENT;
504 snprintf(prop, sizeof(prop), "%shp-det-gpio", prefix);
505 pin_name = "Headphones";
506 gpio_name = "Headphone detection";
507 mask = SND_JACK_HEADPHONE;
509 snprintf(prop, sizeof(prop), "%smic-det-gpio", prefix);
510 pin_name = "Mic Jack";
511 gpio_name = "Mic detection";
512 mask = SND_JACK_MICROPHONE;
515 det = of_get_named_gpio_flags(dev->of_node, prop, 0, &flags);
516 if (det == -EPROBE_DEFER)
517 return -EPROBE_DEFER;
519 if (gpio_is_valid(det)) {
520 sjack->pin.pin = pin_name;
521 sjack->pin.mask = mask;
523 sjack->gpio.name = gpio_name;
524 sjack->gpio.report = mask;
525 sjack->gpio.gpio = det;
526 sjack->gpio.invert = !!(flags & OF_GPIO_ACTIVE_LOW);
527 sjack->gpio.debounce_time = 150;
529 snd_soc_card_jack_new(card, pin_name, mask,
533 snd_soc_jack_add_gpios(&sjack->jack, 1,
539 EXPORT_SYMBOL_GPL(asoc_simple_init_jack);
541 int asoc_simple_init_priv(struct asoc_simple_priv *priv,
542 struct link_info *li)
544 struct snd_soc_card *card = simple_priv_to_card(priv);
545 struct device *dev = simple_priv_to_dev(priv);
546 struct snd_soc_dai_link *dai_link;
547 struct simple_dai_props *dai_props;
548 struct asoc_simple_dai *dais;
549 struct snd_soc_codec_conf *cconf = NULL;
552 dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
553 dai_link = devm_kcalloc(dev, li->link, sizeof(*dai_link), GFP_KERNEL);
554 dais = devm_kcalloc(dev, li->dais, sizeof(*dais), GFP_KERNEL);
555 if (!dai_props || !dai_link || !dais)
559 cconf = devm_kcalloc(dev, li->conf, sizeof(*cconf), GFP_KERNEL);
565 * Use snd_soc_dai_link_component instead of legacy style
566 * It is codec only. but cpu/platform will be supported in the future.
568 * soc-core.c :: snd_soc_init_multicodec()
570 * "platform" might be removed
572 * simple-card-utils.c :: asoc_simple_canonicalize_platform()
574 for (i = 0; i < li->link; i++) {
575 dai_link[i].cpus = &dai_props[i].cpus;
576 dai_link[i].num_cpus = 1;
577 dai_link[i].codecs = &dai_props[i].codecs;
578 dai_link[i].num_codecs = 1;
579 dai_link[i].platforms = &dai_props[i].platforms;
580 dai_link[i].num_platforms = 1;
583 priv->dai_props = dai_props;
584 priv->dai_link = dai_link;
586 priv->codec_conf = cconf;
588 card->dai_link = priv->dai_link;
589 card->num_links = li->link;
590 card->codec_conf = cconf;
591 card->num_configs = li->conf;
595 EXPORT_SYMBOL_GPL(asoc_simple_init_priv);
597 /* Module information */
598 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
599 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
600 MODULE_LICENSE("GPL v2");