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_node *np,
37 struct asoc_simple_data *data)
44 /* sampling rate convert */
45 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate");
46 of_property_read_u32(np, prop, &data->convert_rate);
48 /* channels transfer */
49 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels");
50 of_property_read_u32(np, prop, &data->convert_channels);
52 EXPORT_SYMBOL_GPL(asoc_simple_parse_convert);
54 int asoc_simple_parse_daifmt(struct device *dev,
55 struct device_node *node,
56 struct device_node *codec,
60 struct device_node *bitclkmaster = NULL;
61 struct device_node *framemaster = NULL;
64 daifmt = snd_soc_of_parse_daifmt(node, prefix,
65 &bitclkmaster, &framemaster);
66 daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
68 if (!bitclkmaster && !framemaster) {
70 * No dai-link level and master setting was not found from
71 * sound node level, revert back to legacy DT parsing and
72 * take the settings from codec node.
74 dev_dbg(dev, "Revert to legacy daifmt parsing\n");
76 daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
77 (daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
79 if (codec == bitclkmaster)
80 daifmt |= (codec == framemaster) ?
81 SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
83 daifmt |= (codec == framemaster) ?
84 SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
87 of_node_put(bitclkmaster);
88 of_node_put(framemaster);
94 EXPORT_SYMBOL_GPL(asoc_simple_parse_daifmt);
96 int asoc_simple_set_dailink_name(struct device *dev,
97 struct snd_soc_dai_link *dai_link,
105 name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap);
111 dai_link->name = name;
112 dai_link->stream_name = name;
117 EXPORT_SYMBOL_GPL(asoc_simple_set_dailink_name);
119 int asoc_simple_parse_card_name(struct snd_soc_card *card,
127 /* Parse the card name from DT */
128 ret = snd_soc_of_parse_card_name(card, "label");
129 if (ret < 0 || !card->name) {
132 snprintf(prop, sizeof(prop), "%sname", prefix);
133 ret = snd_soc_of_parse_card_name(card, prop);
138 if (!card->name && card->dai_link)
139 card->name = card->dai_link->name;
143 EXPORT_SYMBOL_GPL(asoc_simple_parse_card_name);
145 static int asoc_simple_clk_enable(struct asoc_simple_dai *dai)
148 return clk_prepare_enable(dai->clk);
153 static void asoc_simple_clk_disable(struct asoc_simple_dai *dai)
156 clk_disable_unprepare(dai->clk);
159 int asoc_simple_parse_clk(struct device *dev,
160 struct device_node *node,
161 struct asoc_simple_dai *simple_dai,
162 struct snd_soc_dai_link_component *dlc)
168 * Parse dai->sysclk come from "clocks = <&xxx>"
169 * (if system has common clock)
170 * or "system-clock-frequency = <xxx>"
171 * or device's module clock.
173 clk = devm_get_clk_from_child(dev, node, NULL);
175 simple_dai->sysclk = clk_get_rate(clk);
177 simple_dai->clk = clk;
178 } else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
179 simple_dai->sysclk = val;
181 clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
183 simple_dai->sysclk = clk_get_rate(clk);
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 *props = simple_priv_to_props(priv, rtd->num);
198 struct asoc_simple_dai *dai;
202 for_each_prop_dai_cpu(props, i1, dai) {
203 ret = asoc_simple_clk_enable(dai);
208 for_each_prop_dai_codec(props, i2, dai) {
209 ret = asoc_simple_clk_enable(dai);
217 for_each_prop_dai_codec(props, i, dai) {
220 asoc_simple_clk_disable(dai);
223 for_each_prop_dai_cpu(props, i, dai) {
226 asoc_simple_clk_disable(dai);
230 EXPORT_SYMBOL_GPL(asoc_simple_startup);
232 void asoc_simple_shutdown(struct snd_pcm_substream *substream)
234 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
235 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
236 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
237 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
238 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
239 struct asoc_simple_dai *dai;
242 if (props->mclk_fs) {
243 snd_soc_dai_set_sysclk(codec_dai, 0, 0, SND_SOC_CLOCK_IN);
244 snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
247 for_each_prop_dai_cpu(props, i, dai)
248 asoc_simple_clk_disable(dai);
249 for_each_prop_dai_codec(props, i, dai)
250 asoc_simple_clk_disable(dai);
252 EXPORT_SYMBOL_GPL(asoc_simple_shutdown);
254 static int asoc_simple_set_clk_rate(struct asoc_simple_dai *simple_dai,
260 if (!simple_dai->clk)
263 if (clk_get_rate(simple_dai->clk) == rate)
266 return clk_set_rate(simple_dai->clk, rate);
269 int asoc_simple_hw_params(struct snd_pcm_substream *substream,
270 struct snd_pcm_hw_params *params)
272 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
273 struct asoc_simple_dai *pdai;
274 struct snd_soc_dai *sdai;
275 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
276 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
277 unsigned int mclk, mclk_fs = 0;
281 mclk_fs = props->mclk_fs;
284 mclk = params_rate(params) * mclk_fs;
286 for_each_prop_dai_codec(props, i, pdai) {
287 ret = asoc_simple_set_clk_rate(pdai, mclk);
291 for_each_prop_dai_cpu(props, i, pdai) {
292 ret = asoc_simple_set_clk_rate(pdai, mclk);
296 for_each_rtd_codec_dais(rtd, i, sdai) {
297 ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_IN);
298 if (ret && ret != -ENOTSUPP)
301 for_each_rtd_cpu_dais(rtd, i, sdai) {
302 ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_OUT);
303 if (ret && ret != -ENOTSUPP)
309 EXPORT_SYMBOL_GPL(asoc_simple_hw_params);
311 int asoc_simple_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
312 struct snd_pcm_hw_params *params)
314 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
315 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
317 asoc_simple_convert_fixup(&dai_props->adata, params);
321 EXPORT_SYMBOL_GPL(asoc_simple_be_hw_params_fixup);
323 static int asoc_simple_init_dai(struct snd_soc_dai *dai,
324 struct asoc_simple_dai *simple_dai)
331 if (simple_dai->sysclk) {
332 ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
333 simple_dai->clk_direction);
334 if (ret && ret != -ENOTSUPP) {
335 dev_err(dai->dev, "simple-card: set_sysclk error\n");
340 if (simple_dai->slots) {
341 ret = snd_soc_dai_set_tdm_slot(dai,
342 simple_dai->tx_slot_mask,
343 simple_dai->rx_slot_mask,
345 simple_dai->slot_width);
346 if (ret && ret != -ENOTSUPP) {
347 dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
355 static int asoc_simple_init_dai_link_params(struct snd_soc_pcm_runtime *rtd,
356 struct simple_dai_props *dai_props)
358 struct snd_soc_dai_link *dai_link = rtd->dai_link;
359 struct snd_soc_component *component;
360 struct snd_soc_pcm_stream *params;
361 struct snd_pcm_hardware hw;
364 /* Only codecs should have non_legacy_dai_naming set. */
365 for_each_rtd_components(rtd, i, component) {
366 if (!component->driver->non_legacy_dai_naming)
370 /* Assumes the capabilities are the same for all supported streams */
371 for_each_pcm_streams(stream) {
372 ret = snd_soc_runtime_calc_hw(rtd, &hw, stream);
378 dev_err(rtd->dev, "simple-card: no valid dai_link params\n");
382 params = devm_kzalloc(rtd->dev, sizeof(*params), GFP_KERNEL);
386 params->formats = hw.formats;
387 params->rates = hw.rates;
388 params->rate_min = hw.rate_min;
389 params->rate_max = hw.rate_max;
390 params->channels_min = hw.channels_min;
391 params->channels_max = hw.channels_max;
393 dai_link->params = params;
394 dai_link->num_params = 1;
399 int asoc_simple_dai_init(struct snd_soc_pcm_runtime *rtd)
401 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(rtd->card);
402 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
403 struct asoc_simple_dai *dai;
406 for_each_prop_dai_codec(props, i, dai) {
407 ret = asoc_simple_init_dai(asoc_rtd_to_codec(rtd, i), dai);
411 for_each_prop_dai_cpu(props, i, dai) {
412 ret = asoc_simple_init_dai(asoc_rtd_to_cpu(rtd, i), dai);
417 ret = asoc_simple_init_dai_link_params(rtd, props);
423 EXPORT_SYMBOL_GPL(asoc_simple_dai_init);
425 void asoc_simple_canonicalize_platform(struct snd_soc_dai_link_component *platforms,
426 struct snd_soc_dai_link_component *cpus)
428 /* Assumes platform == cpu */
429 if (!platforms->of_node)
430 platforms->of_node = cpus->of_node;
432 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_platform);
434 void asoc_simple_canonicalize_cpu(struct snd_soc_dai_link_component *cpus,
438 * In soc_bind_dai_link() will check cpu name after
439 * of_node matching if dai_link has cpu_dai_name.
440 * but, it will never match if name was created by
441 * fmt_single_name() remove cpu_dai_name if cpu_args
444 * fmt_multiple_name()
447 cpus->dai_name = NULL;
449 EXPORT_SYMBOL_GPL(asoc_simple_canonicalize_cpu);
451 int asoc_simple_clean_reference(struct snd_soc_card *card)
453 struct snd_soc_dai_link *dai_link;
454 struct snd_soc_dai_link_component *cpu;
455 struct snd_soc_dai_link_component *codec;
458 for_each_card_prelinks(card, i, dai_link) {
459 for_each_link_cpus(dai_link, j, cpu)
460 of_node_put(cpu->of_node);
461 for_each_link_codecs(dai_link, j, codec)
462 of_node_put(codec->of_node);
466 EXPORT_SYMBOL_GPL(asoc_simple_clean_reference);
468 int asoc_simple_parse_routing(struct snd_soc_card *card,
471 struct device_node *node = card->dev->of_node;
477 snprintf(prop, sizeof(prop), "%s%s", prefix, "routing");
479 if (!of_property_read_bool(node, prop))
482 return snd_soc_of_parse_audio_routing(card, prop);
484 EXPORT_SYMBOL_GPL(asoc_simple_parse_routing);
486 int asoc_simple_parse_widgets(struct snd_soc_card *card,
489 struct device_node *node = card->dev->of_node;
495 snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets");
497 if (of_property_read_bool(node, prop))
498 return snd_soc_of_parse_audio_simple_widgets(card, prop);
500 /* no widgets is not error */
503 EXPORT_SYMBOL_GPL(asoc_simple_parse_widgets);
505 int asoc_simple_parse_pin_switches(struct snd_soc_card *card,
508 const unsigned int nb_controls_max = 16;
509 const char **strings, *control_name;
510 struct snd_kcontrol_new *controls;
511 struct device *dev = card->dev;
512 unsigned int i, nb_controls;
519 snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches");
521 if (!of_property_read_bool(dev->of_node, prop))
524 strings = devm_kcalloc(dev, nb_controls_max,
525 sizeof(*strings), GFP_KERNEL);
529 ret = of_property_read_string_array(dev->of_node, prop,
530 strings, nb_controls_max);
534 nb_controls = (unsigned int)ret;
536 controls = devm_kcalloc(dev, nb_controls,
537 sizeof(*controls), GFP_KERNEL);
541 for (i = 0; i < nb_controls; i++) {
542 control_name = devm_kasprintf(dev, GFP_KERNEL,
543 "%s Switch", strings[i]);
547 controls[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
548 controls[i].name = control_name;
549 controls[i].info = snd_soc_dapm_info_pin_switch;
550 controls[i].get = snd_soc_dapm_get_pin_switch;
551 controls[i].put = snd_soc_dapm_put_pin_switch;
552 controls[i].private_value = (unsigned long)strings[i];
555 card->controls = controls;
556 card->num_controls = nb_controls;
560 EXPORT_SYMBOL_GPL(asoc_simple_parse_pin_switches);
562 int asoc_simple_init_jack(struct snd_soc_card *card,
563 struct asoc_simple_jack *sjack,
564 int is_hp, char *prefix,
567 struct device *dev = card->dev;
568 enum of_gpio_flags flags;
578 sjack->gpio.gpio = -ENOENT;
581 snprintf(prop, sizeof(prop), "%shp-det-gpio", prefix);
582 pin_name = pin ? pin : "Headphones";
583 gpio_name = "Headphone detection";
584 mask = SND_JACK_HEADPHONE;
586 snprintf(prop, sizeof(prop), "%smic-det-gpio", prefix);
587 pin_name = pin ? pin : "Mic Jack";
588 gpio_name = "Mic detection";
589 mask = SND_JACK_MICROPHONE;
592 det = of_get_named_gpio_flags(dev->of_node, prop, 0, &flags);
593 if (det == -EPROBE_DEFER)
594 return -EPROBE_DEFER;
596 if (gpio_is_valid(det)) {
597 sjack->pin.pin = pin_name;
598 sjack->pin.mask = mask;
600 sjack->gpio.name = gpio_name;
601 sjack->gpio.report = mask;
602 sjack->gpio.gpio = det;
603 sjack->gpio.invert = !!(flags & OF_GPIO_ACTIVE_LOW);
604 sjack->gpio.debounce_time = 150;
606 snd_soc_card_jack_new(card, pin_name, mask,
610 snd_soc_jack_add_gpios(&sjack->jack, 1,
616 EXPORT_SYMBOL_GPL(asoc_simple_init_jack);
618 int asoc_simple_init_priv(struct asoc_simple_priv *priv,
619 struct link_info *li)
621 struct snd_soc_card *card = simple_priv_to_card(priv);
622 struct device *dev = simple_priv_to_dev(priv);
623 struct snd_soc_dai_link *dai_link;
624 struct simple_dai_props *dai_props;
625 struct asoc_simple_dai *dais;
626 struct snd_soc_dai_link_component *dlcs;
627 struct snd_soc_codec_conf *cconf = NULL;
628 int i, dai_num = 0, dlc_num = 0, cnf_num = 0;
630 dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
631 dai_link = devm_kcalloc(dev, li->link, sizeof(*dai_link), GFP_KERNEL);
632 if (!dai_props || !dai_link)
637 * dlcs (= CPU+Codec+Platform)
639 for (i = 0; i < li->link; i++) {
640 int cc = li->num[i].cpus + li->num[i].codecs;
643 dlc_num += cc + li->num[i].platforms;
645 if (!li->num[i].cpus)
646 cnf_num += li->num[i].codecs;
649 dais = devm_kcalloc(dev, dai_num, sizeof(*dais), GFP_KERNEL);
650 dlcs = devm_kcalloc(dev, dlc_num, sizeof(*dai_props), GFP_KERNEL);
655 cconf = devm_kcalloc(dev, cnf_num, sizeof(*cconf), GFP_KERNEL);
660 dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
661 li->link, dai_num, cnf_num);
663 /* dummy CPU/Codec */
664 priv->dummy.of_node = NULL;
665 priv->dummy.dai_name = "snd-soc-dummy-dai";
666 priv->dummy.name = "snd-soc-dummy";
668 priv->dai_props = dai_props;
669 priv->dai_link = dai_link;
672 priv->codec_conf = cconf;
674 card->dai_link = priv->dai_link;
675 card->num_links = li->link;
676 card->codec_conf = cconf;
677 card->num_configs = cnf_num;
679 for (i = 0; i < li->link; i++) {
680 if (li->num[i].cpus) {
683 dai_link[i].cpus = dlcs;
684 dai_props[i].num.cpus =
685 dai_link[i].num_cpus = li->num[i].cpus;
686 dai_props[i].cpu_dai = dais;
688 dlcs += li->num[i].cpus;
689 dais += li->num[i].cpus;
691 /* DPCM Be's CPU = dummy */
693 dai_link[i].cpus = &priv->dummy;
694 dai_props[i].num.cpus =
695 dai_link[i].num_cpus = 1;
698 if (li->num[i].codecs) {
700 dai_props[i].codecs =
701 dai_link[i].codecs = dlcs;
702 dai_props[i].num.codecs =
703 dai_link[i].num_codecs = li->num[i].codecs;
704 dai_props[i].codec_dai = dais;
706 dlcs += li->num[i].codecs;
707 dais += li->num[i].codecs;
709 if (!li->num[i].cpus) {
710 /* DPCM Be's Codec */
711 dai_props[i].codec_conf = cconf;
712 cconf += li->num[i].codecs;
715 /* DPCM Fe's Codec = dummy */
716 dai_props[i].codecs =
717 dai_link[i].codecs = &priv->dummy;
718 dai_props[i].num.codecs =
719 dai_link[i].num_codecs = 1;
722 if (li->num[i].platforms) {
724 dai_props[i].platforms =
725 dai_link[i].platforms = dlcs;
726 dai_props[i].num.platforms =
727 dai_link[i].num_platforms = li->num[i].platforms;
729 dlcs += li->num[i].platforms;
731 /* Doesn't have Platform */
732 dai_props[i].platforms =
733 dai_link[i].platforms = NULL;
734 dai_props[i].num.platforms =
735 dai_link[i].num_platforms = 0;
741 EXPORT_SYMBOL_GPL(asoc_simple_init_priv);
743 int asoc_graph_card_probe(struct snd_soc_card *card)
745 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card);
748 ret = asoc_simple_init_hp(card, &priv->hp_jack, NULL);
752 ret = asoc_simple_init_mic(card, &priv->mic_jack, NULL);
758 EXPORT_SYMBOL_GPL(asoc_graph_card_probe);
760 /* Module information */
761 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
762 MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
763 MODULE_LICENSE("GPL v2");