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 clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
179 simple_dai->clk = clk;
180 simple_dai->sysclk = clk_get_rate(clk);
181 } else if (!of_property_read_u32(node, "system-clock-frequency",
183 simple_dai->sysclk = val;
186 if (of_property_read_bool(node, "system-clock-direction-out"))
187 simple_dai->clk_direction = SND_SOC_CLOCK_OUT;
191 EXPORT_SYMBOL_GPL(asoc_simple_parse_clk);
193 int asoc_simple_startup(struct snd_pcm_substream *substream)
195 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
196 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
197 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
200 ret = asoc_simple_clk_enable(dai_props->cpu_dai);
204 ret = asoc_simple_clk_enable(dai_props->codec_dai);
206 asoc_simple_clk_disable(dai_props->cpu_dai);
210 EXPORT_SYMBOL_GPL(asoc_simple_startup);
212 void asoc_simple_shutdown(struct snd_pcm_substream *substream)
214 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
215 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
216 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
217 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
218 struct simple_dai_props *dai_props =
219 simple_priv_to_props(priv, rtd->num);
221 if (dai_props->mclk_fs) {
222 snd_soc_dai_set_sysclk(codec_dai, 0, 0, SND_SOC_CLOCK_IN);
223 snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
226 asoc_simple_clk_disable(dai_props->cpu_dai);
228 asoc_simple_clk_disable(dai_props->codec_dai);
230 EXPORT_SYMBOL_GPL(asoc_simple_shutdown);
232 static int asoc_simple_set_clk_rate(struct asoc_simple_dai *simple_dai,
238 if (!simple_dai->clk)
241 if (clk_get_rate(simple_dai->clk) == rate)
244 return clk_set_rate(simple_dai->clk, rate);
247 int asoc_simple_hw_params(struct snd_pcm_substream *substream,
248 struct snd_pcm_hw_params *params)
250 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
251 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
252 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
253 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
254 struct simple_dai_props *dai_props =
255 simple_priv_to_props(priv, rtd->num);
256 unsigned int mclk, mclk_fs = 0;
259 if (dai_props->mclk_fs)
260 mclk_fs = dai_props->mclk_fs;
263 mclk = params_rate(params) * mclk_fs;
265 ret = asoc_simple_set_clk_rate(dai_props->codec_dai, mclk);
269 ret = asoc_simple_set_clk_rate(dai_props->cpu_dai, mclk);
273 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
275 if (ret && ret != -ENOTSUPP)
278 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
280 if (ret && ret != -ENOTSUPP)
287 EXPORT_SYMBOL_GPL(asoc_simple_hw_params);
289 int asoc_simple_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
290 struct snd_pcm_hw_params *params)
292 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
293 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
295 asoc_simple_convert_fixup(&dai_props->adata, params);
299 EXPORT_SYMBOL_GPL(asoc_simple_be_hw_params_fixup);
301 static int asoc_simple_init_dai(struct snd_soc_dai *dai,
302 struct asoc_simple_dai *simple_dai)
309 if (simple_dai->sysclk) {
310 ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
311 simple_dai->clk_direction);
312 if (ret && ret != -ENOTSUPP) {
313 dev_err(dai->dev, "simple-card: set_sysclk error\n");
318 if (simple_dai->slots) {
319 ret = snd_soc_dai_set_tdm_slot(dai,
320 simple_dai->tx_slot_mask,
321 simple_dai->rx_slot_mask,
323 simple_dai->slot_width);
324 if (ret && ret != -ENOTSUPP) {
325 dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
333 static int asoc_simple_init_dai_link_params(struct snd_soc_pcm_runtime *rtd,
334 struct simple_dai_props *dai_props)
336 struct snd_soc_dai_link *dai_link = rtd->dai_link;
337 struct snd_soc_component *component;
338 struct snd_soc_pcm_stream *params;
339 struct snd_pcm_hardware hw;
342 /* Only codecs should have non_legacy_dai_naming set. */
343 for_each_rtd_components(rtd, i, component) {
344 if (!component->driver->non_legacy_dai_naming)
348 /* Assumes the capabilities are the same for all supported streams */
349 for_each_pcm_streams(stream) {
350 ret = snd_soc_runtime_calc_hw(rtd, &hw, stream);
356 dev_err(rtd->dev, "simple-card: no valid dai_link params\n");
360 params = devm_kzalloc(rtd->dev, sizeof(*params), GFP_KERNEL);
364 params->formats = hw.formats;
365 params->rates = hw.rates;
366 params->rate_min = hw.rate_min;
367 params->rate_max = hw.rate_max;
368 params->channels_min = hw.channels_min;
369 params->channels_max = hw.channels_max;
371 dai_link->params = params;
372 dai_link->num_params = 1;
377 int asoc_simple_dai_init(struct snd_soc_pcm_runtime *rtd)
379 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
380 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
383 ret = asoc_simple_init_dai(asoc_rtd_to_codec(rtd, 0),
384 dai_props->codec_dai);
388 ret = asoc_simple_init_dai(asoc_rtd_to_cpu(rtd, 0),
393 ret = asoc_simple_init_dai_link_params(rtd, dai_props);
399 EXPORT_SYMBOL_GPL(asoc_simple_dai_init);
401 void asoc_simple_canonicalize_platform(struct snd_soc_dai_link *dai_link)
403 /* Assumes platform == cpu */
404 if (!dai_link->platforms->of_node)
405 dai_link->platforms->of_node = dai_link->cpus->of_node;
408 * DPCM BE can be no platform.
409 * Alloced memory will be waste, but not leak.
411 if (!dai_link->platforms->of_node)
412 dai_link->num_platforms = 0;
414 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_platform);
416 void asoc_simple_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
420 * In soc_bind_dai_link() will check cpu name after
421 * of_node matching if dai_link has cpu_dai_name.
422 * but, it will never match if name was created by
423 * fmt_single_name() remove cpu_dai_name if cpu_args
426 * fmt_multiple_name()
429 dai_link->cpus->dai_name = NULL;
431 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_cpu);
433 int asoc_simple_clean_reference(struct snd_soc_card *card)
435 struct snd_soc_dai_link *dai_link;
438 for_each_card_prelinks(card, i, dai_link) {
439 of_node_put(dai_link->cpus->of_node);
440 of_node_put(dai_link->codecs->of_node);
444 EXPORT_SYMBOL_GPL(asoc_simple_clean_reference);
446 int asoc_simple_parse_routing(struct snd_soc_card *card,
449 struct device_node *node = card->dev->of_node;
455 snprintf(prop, sizeof(prop), "%s%s", prefix, "routing");
457 if (!of_property_read_bool(node, prop))
460 return snd_soc_of_parse_audio_routing(card, prop);
462 EXPORT_SYMBOL_GPL(asoc_simple_parse_routing);
464 int asoc_simple_parse_widgets(struct snd_soc_card *card,
467 struct device_node *node = card->dev->of_node;
473 snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets");
475 if (of_property_read_bool(node, prop))
476 return snd_soc_of_parse_audio_simple_widgets(card, prop);
478 /* no widgets is not error */
481 EXPORT_SYMBOL_GPL(asoc_simple_parse_widgets);
483 int asoc_simple_parse_pin_switches(struct snd_soc_card *card,
486 const unsigned int nb_controls_max = 16;
487 const char **strings, *control_name;
488 struct snd_kcontrol_new *controls;
489 struct device *dev = card->dev;
490 unsigned int i, nb_controls;
497 snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches");
499 if (!of_property_read_bool(dev->of_node, prop))
502 strings = devm_kcalloc(dev, nb_controls_max,
503 sizeof(*strings), GFP_KERNEL);
507 ret = of_property_read_string_array(dev->of_node, prop,
508 strings, nb_controls_max);
512 nb_controls = (unsigned int)ret;
514 controls = devm_kcalloc(dev, nb_controls,
515 sizeof(*controls), GFP_KERNEL);
519 for (i = 0; i < nb_controls; i++) {
520 control_name = devm_kasprintf(dev, GFP_KERNEL,
521 "%s Switch", strings[i]);
525 controls[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
526 controls[i].name = control_name;
527 controls[i].info = snd_soc_dapm_info_pin_switch;
528 controls[i].get = snd_soc_dapm_get_pin_switch;
529 controls[i].put = snd_soc_dapm_put_pin_switch;
530 controls[i].private_value = (unsigned long)strings[i];
533 card->controls = controls;
534 card->num_controls = nb_controls;
538 EXPORT_SYMBOL_GPL(asoc_simple_parse_pin_switches);
540 int asoc_simple_init_jack(struct snd_soc_card *card,
541 struct asoc_simple_jack *sjack,
542 int is_hp, char *prefix,
545 struct device *dev = card->dev;
546 enum of_gpio_flags flags;
556 sjack->gpio.gpio = -ENOENT;
559 snprintf(prop, sizeof(prop), "%shp-det-gpio", prefix);
560 pin_name = pin ? pin : "Headphones";
561 gpio_name = "Headphone detection";
562 mask = SND_JACK_HEADPHONE;
564 snprintf(prop, sizeof(prop), "%smic-det-gpio", prefix);
565 pin_name = pin ? pin : "Mic Jack";
566 gpio_name = "Mic detection";
567 mask = SND_JACK_MICROPHONE;
570 det = of_get_named_gpio_flags(dev->of_node, prop, 0, &flags);
571 if (det == -EPROBE_DEFER)
572 return -EPROBE_DEFER;
574 if (gpio_is_valid(det)) {
575 sjack->pin.pin = pin_name;
576 sjack->pin.mask = mask;
578 sjack->gpio.name = gpio_name;
579 sjack->gpio.report = mask;
580 sjack->gpio.gpio = det;
581 sjack->gpio.invert = !!(flags & OF_GPIO_ACTIVE_LOW);
582 sjack->gpio.debounce_time = 150;
584 snd_soc_card_jack_new(card, pin_name, mask,
588 snd_soc_jack_add_gpios(&sjack->jack, 1,
594 EXPORT_SYMBOL_GPL(asoc_simple_init_jack);
596 int asoc_simple_init_priv(struct asoc_simple_priv *priv,
597 struct link_info *li)
599 struct snd_soc_card *card = simple_priv_to_card(priv);
600 struct device *dev = simple_priv_to_dev(priv);
601 struct snd_soc_dai_link *dai_link;
602 struct simple_dai_props *dai_props;
603 struct asoc_simple_dai *dais;
604 struct snd_soc_codec_conf *cconf = NULL;
607 dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
608 dai_link = devm_kcalloc(dev, li->link, sizeof(*dai_link), GFP_KERNEL);
609 dais = devm_kcalloc(dev, li->dais, sizeof(*dais), GFP_KERNEL);
610 if (!dai_props || !dai_link || !dais)
614 cconf = devm_kcalloc(dev, li->conf, sizeof(*cconf), GFP_KERNEL);
620 * Use snd_soc_dai_link_component instead of legacy style
621 * It is codec only. but cpu/platform will be supported in the future.
623 * soc-core.c :: snd_soc_init_multicodec()
625 * "platform" might be removed
627 * simple-card-utils.c :: asoc_simple_canonicalize_platform()
629 for (i = 0; i < li->link; i++) {
630 dai_link[i].cpus = &dai_props[i].cpus;
631 dai_link[i].num_cpus = 1;
632 dai_link[i].codecs = &dai_props[i].codecs;
633 dai_link[i].num_codecs = 1;
634 dai_link[i].platforms = &dai_props[i].platforms;
635 dai_link[i].num_platforms = 1;
638 priv->dai_props = dai_props;
639 priv->dai_link = dai_link;
641 priv->codec_conf = cconf;
643 card->dai_link = priv->dai_link;
644 card->num_links = li->link;
645 card->codec_conf = cconf;
646 card->num_configs = li->conf;
650 EXPORT_SYMBOL_GPL(asoc_simple_init_priv);
652 /* Module information */
653 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
654 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
655 MODULE_LICENSE("GPL v2");