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1// SPDX-License-Identifier: GPL-2.0
2//
3// simple-card-utils.c
4//
5// Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6
7#include <linux/clk.h>
8#include <linux/gpio/consumer.h>
9#include <linux/module.h>
10#include <linux/of.h>
11#include <linux/of_graph.h>
12#include <sound/jack.h>
13#include <sound/pcm_params.h>
14#include <sound/simple_card_utils.h>
15
16static void simple_fixup_sample_fmt(struct simple_util_data *data,
17 struct snd_pcm_hw_params *params)
18{
19 int i;
20 struct snd_mask *mask = hw_param_mask(params,
21 SNDRV_PCM_HW_PARAM_FORMAT);
22 struct {
23 char *fmt;
24 u32 val;
25 } of_sample_fmt_table[] = {
26 { "s8", SNDRV_PCM_FORMAT_S8},
27 { "s16_le", SNDRV_PCM_FORMAT_S16_LE},
28 { "s24_le", SNDRV_PCM_FORMAT_S24_LE},
29 { "s24_3le", SNDRV_PCM_FORMAT_S24_3LE},
30 { "s32_le", SNDRV_PCM_FORMAT_S32_LE},
31 };
32
33 for (i = 0; i < ARRAY_SIZE(of_sample_fmt_table); i++) {
34 if (!strcmp(data->convert_sample_format,
35 of_sample_fmt_table[i].fmt)) {
36 snd_mask_none(mask);
37 snd_mask_set(mask, of_sample_fmt_table[i].val);
38 break;
39 }
40 }
41}
42
43void simple_util_parse_convert(struct device_node *np,
44 char *prefix,
45 struct simple_util_data *data)
46{
47 char prop[128];
48
49 if (!prefix)
50 prefix = "";
51
52 /* sampling rate convert */
53 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate");
54 of_property_read_u32(np, prop, &data->convert_rate);
55
56 /* channels transfer */
57 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-channels");
58 of_property_read_u32(np, prop, &data->convert_channels);
59
60 /* convert sample format */
61 snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-sample-format");
62 of_property_read_string(np, prop, &data->convert_sample_format);
63}
64EXPORT_SYMBOL_GPL(simple_util_parse_convert);
65
66/**
67 * simple_util_is_convert_required() - Query if HW param conversion was requested
68 * @data: Link data.
69 *
70 * Returns true if any HW param conversion was requested for this DAI link with
71 * any "convert-xxx" properties.
72 */
73bool simple_util_is_convert_required(const struct simple_util_data *data)
74{
75 return data->convert_rate ||
76 data->convert_channels ||
77 data->convert_sample_format;
78}
79EXPORT_SYMBOL_GPL(simple_util_is_convert_required);
80
81int simple_util_parse_daifmt(struct device *dev,
82 struct device_node *node,
83 struct device_node *codec,
84 char *prefix,
85 unsigned int *retfmt)
86{
87 struct device_node *bitclkmaster = NULL;
88 struct device_node *framemaster = NULL;
89 unsigned int daifmt;
90
91 daifmt = snd_soc_daifmt_parse_format(node, prefix);
92
93 snd_soc_daifmt_parse_clock_provider_as_phandle(node, prefix, &bitclkmaster, &framemaster);
94 if (!bitclkmaster && !framemaster) {
95 /*
96 * No dai-link level and master setting was not found from
97 * sound node level, revert back to legacy DT parsing and
98 * take the settings from codec node.
99 */
100 dev_dbg(dev, "Revert to legacy daifmt parsing\n");
101
102 daifmt |= snd_soc_daifmt_parse_clock_provider_as_flag(codec, NULL);
103 } else {
104 daifmt |= snd_soc_daifmt_clock_provider_from_bitmap(
105 ((codec == bitclkmaster) << 4) | (codec == framemaster));
106 }
107
108 of_node_put(bitclkmaster);
109 of_node_put(framemaster);
110
111 *retfmt = daifmt;
112
113 return 0;
114}
115EXPORT_SYMBOL_GPL(simple_util_parse_daifmt);
116
117int simple_util_parse_tdm_width_map(struct device *dev, struct device_node *np,
118 struct simple_util_dai *dai)
119{
120 u32 *array_values, *p;
121 int n, i, ret;
122
123 if (!of_property_read_bool(np, "dai-tdm-slot-width-map"))
124 return 0;
125
126 n = of_property_count_elems_of_size(np, "dai-tdm-slot-width-map", sizeof(u32));
127 if (n % 3) {
128 dev_err(dev, "Invalid number of cells for dai-tdm-slot-width-map\n");
129 return -EINVAL;
130 }
131
132 dai->tdm_width_map = devm_kcalloc(dev, n, sizeof(*dai->tdm_width_map), GFP_KERNEL);
133 if (!dai->tdm_width_map)
134 return -ENOMEM;
135
136 array_values = kcalloc(n, sizeof(*array_values), GFP_KERNEL);
137 if (!array_values)
138 return -ENOMEM;
139
140 ret = of_property_read_u32_array(np, "dai-tdm-slot-width-map", array_values, n);
141 if (ret < 0) {
142 dev_err(dev, "Could not read dai-tdm-slot-width-map: %d\n", ret);
143 goto out;
144 }
145
146 p = array_values;
147 for (i = 0; i < n / 3; ++i) {
148 dai->tdm_width_map[i].sample_bits = *p++;
149 dai->tdm_width_map[i].slot_width = *p++;
150 dai->tdm_width_map[i].slot_count = *p++;
151 }
152
153 dai->n_tdm_widths = i;
154 ret = 0;
155out:
156 kfree(array_values);
157
158 return ret;
159}
160EXPORT_SYMBOL_GPL(simple_util_parse_tdm_width_map);
161
162int simple_util_set_dailink_name(struct device *dev,
163 struct snd_soc_dai_link *dai_link,
164 const char *fmt, ...)
165{
166 va_list ap;
167 char *name = NULL;
168 int ret = -ENOMEM;
169
170 va_start(ap, fmt);
171 name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap);
172 va_end(ap);
173
174 if (name) {
175 ret = 0;
176
177 dai_link->name = name;
178 dai_link->stream_name = name;
179 }
180
181 return ret;
182}
183EXPORT_SYMBOL_GPL(simple_util_set_dailink_name);
184
185int simple_util_parse_card_name(struct snd_soc_card *card,
186 char *prefix)
187{
188 int ret;
189
190 if (!prefix)
191 prefix = "";
192
193 /* Parse the card name from DT */
194 ret = snd_soc_of_parse_card_name(card, "label");
195 if (ret < 0 || !card->name) {
196 char prop[128];
197
198 snprintf(prop, sizeof(prop), "%sname", prefix);
199 ret = snd_soc_of_parse_card_name(card, prop);
200 if (ret < 0)
201 return ret;
202 }
203
204 if (!card->name && card->dai_link)
205 card->name = card->dai_link->name;
206
207 return 0;
208}
209EXPORT_SYMBOL_GPL(simple_util_parse_card_name);
210
211static int simple_clk_enable(struct simple_util_dai *dai)
212{
213 if (dai)
214 return clk_prepare_enable(dai->clk);
215
216 return 0;
217}
218
219static void simple_clk_disable(struct simple_util_dai *dai)
220{
221 if (dai)
222 clk_disable_unprepare(dai->clk);
223}
224
225int simple_util_parse_clk(struct device *dev,
226 struct device_node *node,
227 struct simple_util_dai *simple_dai,
228 struct snd_soc_dai_link_component *dlc)
229{
230 struct clk *clk;
231 u32 val;
232
233 /*
234 * Parse dai->sysclk come from "clocks = <&xxx>"
235 * (if system has common clock)
236 * or "system-clock-frequency = <xxx>"
237 * or device's module clock.
238 */
239 clk = devm_get_clk_from_child(dev, node, NULL);
240 simple_dai->clk_fixed = of_property_read_bool(
241 node, "system-clock-fixed");
242 if (!IS_ERR(clk)) {
243 simple_dai->sysclk = clk_get_rate(clk);
244
245 simple_dai->clk = clk;
246 } else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
247 simple_dai->sysclk = val;
248 simple_dai->clk_fixed = true;
249 } else {
250 clk = devm_get_clk_from_child(dev, dlc->of_node, NULL);
251 if (!IS_ERR(clk))
252 simple_dai->sysclk = clk_get_rate(clk);
253 }
254
255 if (of_property_read_bool(node, "system-clock-direction-out"))
256 simple_dai->clk_direction = SND_SOC_CLOCK_OUT;
257
258 return 0;
259}
260EXPORT_SYMBOL_GPL(simple_util_parse_clk);
261
262static int simple_check_fixed_sysclk(struct device *dev,
263 struct simple_util_dai *dai,
264 unsigned int *fixed_sysclk)
265{
266 if (dai->clk_fixed) {
267 if (*fixed_sysclk && *fixed_sysclk != dai->sysclk) {
268 dev_err(dev, "inconsistent fixed sysclk rates (%u vs %u)\n",
269 *fixed_sysclk, dai->sysclk);
270 return -EINVAL;
271 }
272 *fixed_sysclk = dai->sysclk;
273 }
274
275 return 0;
276}
277
278int simple_util_startup(struct snd_pcm_substream *substream)
279{
280 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
281 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
282 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
283 struct simple_util_dai *dai;
284 unsigned int fixed_sysclk = 0;
285 int i1, i2, i;
286 int ret;
287
288 for_each_prop_dai_cpu(props, i1, dai) {
289 ret = simple_clk_enable(dai);
290 if (ret)
291 goto cpu_err;
292 ret = simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
293 if (ret)
294 goto cpu_err;
295 }
296
297 for_each_prop_dai_codec(props, i2, dai) {
298 ret = simple_clk_enable(dai);
299 if (ret)
300 goto codec_err;
301 ret = simple_check_fixed_sysclk(rtd->dev, dai, &fixed_sysclk);
302 if (ret)
303 goto codec_err;
304 }
305
306 if (fixed_sysclk && props->mclk_fs) {
307 unsigned int fixed_rate = fixed_sysclk / props->mclk_fs;
308
309 if (fixed_sysclk % props->mclk_fs) {
310 dev_err(rtd->dev, "fixed sysclk %u not divisible by mclk_fs %u\n",
311 fixed_sysclk, props->mclk_fs);
312 ret = -EINVAL;
313 goto codec_err;
314 }
315 ret = snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_RATE,
316 fixed_rate, fixed_rate);
317 if (ret < 0)
318 goto codec_err;
319 }
320
321 return 0;
322
323codec_err:
324 for_each_prop_dai_codec(props, i, dai) {
325 if (i >= i2)
326 break;
327 simple_clk_disable(dai);
328 }
329cpu_err:
330 for_each_prop_dai_cpu(props, i, dai) {
331 if (i >= i1)
332 break;
333 simple_clk_disable(dai);
334 }
335 return ret;
336}
337EXPORT_SYMBOL_GPL(simple_util_startup);
338
339void simple_util_shutdown(struct snd_pcm_substream *substream)
340{
341 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
342 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
343 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
344 struct simple_util_dai *dai;
345 int i;
346
347 for_each_prop_dai_cpu(props, i, dai) {
348 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, i);
349
350 if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(cpu_dai))
351 snd_soc_dai_set_sysclk(cpu_dai,
352 0, 0, SND_SOC_CLOCK_OUT);
353
354 simple_clk_disable(dai);
355 }
356 for_each_prop_dai_codec(props, i, dai) {
357 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, i);
358
359 if (props->mclk_fs && !dai->clk_fixed && !snd_soc_dai_active(codec_dai))
360 snd_soc_dai_set_sysclk(codec_dai,
361 0, 0, SND_SOC_CLOCK_IN);
362
363 simple_clk_disable(dai);
364 }
365}
366EXPORT_SYMBOL_GPL(simple_util_shutdown);
367
368static int simple_set_clk_rate(struct device *dev,
369 struct simple_util_dai *simple_dai,
370 unsigned long rate)
371{
372 if (!simple_dai)
373 return 0;
374
375 if (simple_dai->clk_fixed && rate != simple_dai->sysclk) {
376 dev_err(dev, "dai %s invalid clock rate %lu\n", simple_dai->name, rate);
377 return -EINVAL;
378 }
379
380 if (!simple_dai->clk)
381 return 0;
382
383 if (clk_get_rate(simple_dai->clk) == rate)
384 return 0;
385
386 return clk_set_rate(simple_dai->clk, rate);
387}
388
389static int simple_set_tdm(struct snd_soc_dai *dai,
390 struct simple_util_dai *simple_dai,
391 struct snd_pcm_hw_params *params)
392{
393 int sample_bits = params_width(params);
394 int slot_width, slot_count;
395 int i, ret;
396
397 if (!simple_dai || !simple_dai->tdm_width_map)
398 return 0;
399
400 slot_width = simple_dai->slot_width;
401 slot_count = simple_dai->slots;
402
403 if (slot_width == 0)
404 slot_width = sample_bits;
405
406 for (i = 0; i < simple_dai->n_tdm_widths; ++i) {
407 if (simple_dai->tdm_width_map[i].sample_bits == sample_bits) {
408 slot_width = simple_dai->tdm_width_map[i].slot_width;
409 slot_count = simple_dai->tdm_width_map[i].slot_count;
410 break;
411 }
412 }
413
414 ret = snd_soc_dai_set_tdm_slot(dai,
415 simple_dai->tx_slot_mask,
416 simple_dai->rx_slot_mask,
417 slot_count,
418 slot_width);
419 if (ret && ret != -ENOTSUPP) {
420 dev_err(dai->dev, "simple-card: set_tdm_slot error: %d\n", ret);
421 return ret;
422 }
423
424 return 0;
425}
426
427int simple_util_hw_params(struct snd_pcm_substream *substream,
428 struct snd_pcm_hw_params *params)
429{
430 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
431 struct simple_util_dai *pdai;
432 struct snd_soc_dai *sdai;
433 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
434 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
435 unsigned int mclk, mclk_fs = 0;
436 int i, ret;
437
438 if (props->mclk_fs)
439 mclk_fs = props->mclk_fs;
440
441 if (mclk_fs) {
442 struct snd_soc_component *component;
443 mclk = params_rate(params) * mclk_fs;
444
445 for_each_prop_dai_codec(props, i, pdai) {
446 ret = simple_set_clk_rate(rtd->dev, pdai, mclk);
447 if (ret < 0)
448 return ret;
449 }
450
451 for_each_prop_dai_cpu(props, i, pdai) {
452 ret = simple_set_clk_rate(rtd->dev, pdai, mclk);
453 if (ret < 0)
454 return ret;
455 }
456
457 /* Ensure sysclk is set on all components in case any
458 * (such as platform components) are missed by calls to
459 * snd_soc_dai_set_sysclk.
460 */
461 for_each_rtd_components(rtd, i, component) {
462 ret = snd_soc_component_set_sysclk(component, 0, 0,
463 mclk, SND_SOC_CLOCK_IN);
464 if (ret && ret != -ENOTSUPP)
465 return ret;
466 }
467
468 for_each_rtd_codec_dais(rtd, i, sdai) {
469 ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_IN);
470 if (ret && ret != -ENOTSUPP)
471 return ret;
472 }
473
474 for_each_rtd_cpu_dais(rtd, i, sdai) {
475 ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_OUT);
476 if (ret && ret != -ENOTSUPP)
477 return ret;
478 }
479 }
480
481 for_each_prop_dai_codec(props, i, pdai) {
482 sdai = snd_soc_rtd_to_codec(rtd, i);
483 ret = simple_set_tdm(sdai, pdai, params);
484 if (ret < 0)
485 return ret;
486 }
487
488 for_each_prop_dai_cpu(props, i, pdai) {
489 sdai = snd_soc_rtd_to_cpu(rtd, i);
490 ret = simple_set_tdm(sdai, pdai, params);
491 if (ret < 0)
492 return ret;
493 }
494
495 return 0;
496}
497EXPORT_SYMBOL_GPL(simple_util_hw_params);
498
499int simple_util_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
500 struct snd_pcm_hw_params *params)
501{
502 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
503 struct simple_dai_props *dai_props = simple_priv_to_props(priv, rtd->num);
504 struct simple_util_data *data = &dai_props->adata;
505 struct snd_interval *rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
506 struct snd_interval *channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
507
508 if (data->convert_rate)
509 rate->min =
510 rate->max = data->convert_rate;
511
512 if (data->convert_channels)
513 channels->min =
514 channels->max = data->convert_channels;
515
516 if (data->convert_sample_format)
517 simple_fixup_sample_fmt(data, params);
518
519 return 0;
520}
521EXPORT_SYMBOL_GPL(simple_util_be_hw_params_fixup);
522
523static int simple_init_dai(struct snd_soc_dai *dai, struct simple_util_dai *simple_dai)
524{
525 int ret;
526
527 if (!simple_dai)
528 return 0;
529
530 if (simple_dai->sysclk) {
531 ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk,
532 simple_dai->clk_direction);
533 if (ret && ret != -ENOTSUPP) {
534 dev_err(dai->dev, "simple-card: set_sysclk error\n");
535 return ret;
536 }
537 }
538
539 if (simple_dai->slots) {
540 ret = snd_soc_dai_set_tdm_slot(dai,
541 simple_dai->tx_slot_mask,
542 simple_dai->rx_slot_mask,
543 simple_dai->slots,
544 simple_dai->slot_width);
545 if (ret && ret != -ENOTSUPP) {
546 dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
547 return ret;
548 }
549 }
550
551 return 0;
552}
553
554static inline int simple_component_is_codec(struct snd_soc_component *component)
555{
556 return component->driver->endianness;
557}
558
559static int simple_init_for_codec2codec(struct snd_soc_pcm_runtime *rtd,
560 struct simple_dai_props *dai_props)
561{
562 struct snd_soc_dai_link *dai_link = rtd->dai_link;
563 struct snd_soc_component *component;
564 struct snd_soc_pcm_stream *c2c_params;
565 struct snd_pcm_hardware hw;
566 int i, ret, stream;
567
568 /* Do nothing if it already has Codec2Codec settings */
569 if (dai_link->c2c_params)
570 return 0;
571
572 /* Do nothing if it was DPCM :: BE */
573 if (dai_link->no_pcm)
574 return 0;
575
576 /* Only Codecs */
577 for_each_rtd_components(rtd, i, component) {
578 if (!simple_component_is_codec(component))
579 return 0;
580 }
581
582 /* Assumes the capabilities are the same for all supported streams */
583 for_each_pcm_streams(stream) {
584 ret = snd_soc_runtime_calc_hw(rtd, &hw, stream);
585 if (ret == 0)
586 break;
587 }
588
589 if (ret < 0) {
590 dev_err(rtd->dev, "simple-card: no valid dai_link params\n");
591 return ret;
592 }
593
594 c2c_params = devm_kzalloc(rtd->dev, sizeof(*c2c_params), GFP_KERNEL);
595 if (!c2c_params)
596 return -ENOMEM;
597
598 c2c_params->formats = hw.formats;
599 c2c_params->rates = hw.rates;
600 c2c_params->rate_min = hw.rate_min;
601 c2c_params->rate_max = hw.rate_max;
602 c2c_params->channels_min = hw.channels_min;
603 c2c_params->channels_max = hw.channels_max;
604
605 dai_link->c2c_params = c2c_params;
606 dai_link->num_c2c_params = 1;
607
608 return 0;
609}
610
611int simple_util_dai_init(struct snd_soc_pcm_runtime *rtd)
612{
613 struct simple_util_priv *priv = snd_soc_card_get_drvdata(rtd->card);
614 struct simple_dai_props *props = simple_priv_to_props(priv, rtd->num);
615 struct simple_util_dai *dai;
616 int i, ret;
617
618 for_each_prop_dai_codec(props, i, dai) {
619 ret = simple_init_dai(snd_soc_rtd_to_codec(rtd, i), dai);
620 if (ret < 0)
621 return ret;
622 }
623 for_each_prop_dai_cpu(props, i, dai) {
624 ret = simple_init_dai(snd_soc_rtd_to_cpu(rtd, i), dai);
625 if (ret < 0)
626 return ret;
627 }
628
629 ret = simple_init_for_codec2codec(rtd, props);
630 if (ret < 0)
631 return ret;
632
633 return 0;
634}
635EXPORT_SYMBOL_GPL(simple_util_dai_init);
636
637void simple_util_canonicalize_platform(struct snd_soc_dai_link_component *platforms,
638 struct snd_soc_dai_link_component *cpus)
639{
640 /*
641 * Assumes Platform == CPU
642 *
643 * Some CPU might be using soc-generic-dmaengine-pcm. This means CPU and Platform
644 * are different Component, but are sharing same component->dev.
645 *
646 * Let's assume Platform is same as CPU if it doesn't identify Platform on DT.
647 * see
648 * simple-card.c :: simple_count_noml()
649 */
650 if (!platforms->of_node)
651 snd_soc_dlc_use_cpu_as_platform(platforms, cpus);
652}
653EXPORT_SYMBOL_GPL(simple_util_canonicalize_platform);
654
655void simple_util_canonicalize_cpu(struct snd_soc_dai_link_component *cpus,
656 int is_single_links)
657{
658 /*
659 * In soc_bind_dai_link() will check cpu name after
660 * of_node matching if dai_link has cpu_dai_name.
661 * but, it will never match if name was created by
662 * fmt_single_name() remove cpu_dai_name if cpu_args
663 * was 0. See:
664 * fmt_single_name()
665 * fmt_multiple_name()
666 */
667 if (is_single_links)
668 cpus->dai_name = NULL;
669}
670EXPORT_SYMBOL_GPL(simple_util_canonicalize_cpu);
671
672void simple_util_clean_reference(struct snd_soc_card *card)
673{
674 struct snd_soc_dai_link *dai_link;
675 struct snd_soc_dai_link_component *cpu;
676 struct snd_soc_dai_link_component *codec;
677 int i, j;
678
679 for_each_card_prelinks(card, i, dai_link) {
680 for_each_link_cpus(dai_link, j, cpu)
681 of_node_put(cpu->of_node);
682 for_each_link_codecs(dai_link, j, codec)
683 of_node_put(codec->of_node);
684 }
685}
686EXPORT_SYMBOL_GPL(simple_util_clean_reference);
687
688int simple_util_parse_routing(struct snd_soc_card *card,
689 char *prefix)
690{
691 struct device_node *node = card->dev->of_node;
692 char prop[128];
693
694 if (!prefix)
695 prefix = "";
696
697 snprintf(prop, sizeof(prop), "%s%s", prefix, "routing");
698
699 if (!of_property_read_bool(node, prop))
700 return 0;
701
702 return snd_soc_of_parse_audio_routing(card, prop);
703}
704EXPORT_SYMBOL_GPL(simple_util_parse_routing);
705
706int simple_util_parse_widgets(struct snd_soc_card *card,
707 char *prefix)
708{
709 struct device_node *node = card->dev->of_node;
710 char prop[128];
711
712 if (!prefix)
713 prefix = "";
714
715 snprintf(prop, sizeof(prop), "%s%s", prefix, "widgets");
716
717 if (of_property_read_bool(node, prop))
718 return snd_soc_of_parse_audio_simple_widgets(card, prop);
719
720 /* no widgets is not error */
721 return 0;
722}
723EXPORT_SYMBOL_GPL(simple_util_parse_widgets);
724
725int simple_util_parse_pin_switches(struct snd_soc_card *card,
726 char *prefix)
727{
728 char prop[128];
729
730 if (!prefix)
731 prefix = "";
732
733 snprintf(prop, sizeof(prop), "%s%s", prefix, "pin-switches");
734
735 return snd_soc_of_parse_pin_switches(card, prop);
736}
737EXPORT_SYMBOL_GPL(simple_util_parse_pin_switches);
738
739int simple_util_init_jack(struct snd_soc_card *card,
740 struct simple_util_jack *sjack,
741 int is_hp, char *prefix,
742 char *pin)
743{
744 struct device *dev = card->dev;
745 struct gpio_desc *desc;
746 char prop[128];
747 char *pin_name;
748 char *gpio_name;
749 int mask;
750 int error;
751
752 if (!prefix)
753 prefix = "";
754
755 sjack->gpio.gpio = -ENOENT;
756
757 if (is_hp) {
758 snprintf(prop, sizeof(prop), "%shp-det", prefix);
759 pin_name = pin ? pin : "Headphones";
760 gpio_name = "Headphone detection";
761 mask = SND_JACK_HEADPHONE;
762 } else {
763 snprintf(prop, sizeof(prop), "%smic-det", prefix);
764 pin_name = pin ? pin : "Mic Jack";
765 gpio_name = "Mic detection";
766 mask = SND_JACK_MICROPHONE;
767 }
768
769 desc = gpiod_get_optional(dev, prop, GPIOD_IN);
770 error = PTR_ERR_OR_ZERO(desc);
771 if (error)
772 return error;
773
774 if (desc) {
775 error = gpiod_set_consumer_name(desc, gpio_name);
776 if (error)
777 return error;
778
779 sjack->pin.pin = pin_name;
780 sjack->pin.mask = mask;
781
782 sjack->gpio.name = gpio_name;
783 sjack->gpio.report = mask;
784 sjack->gpio.desc = desc;
785 sjack->gpio.debounce_time = 150;
786
787 snd_soc_card_jack_new_pins(card, pin_name, mask, &sjack->jack,
788 &sjack->pin, 1);
789
790 snd_soc_jack_add_gpios(&sjack->jack, 1, &sjack->gpio);
791 }
792
793 return 0;
794}
795EXPORT_SYMBOL_GPL(simple_util_init_jack);
796
797int simple_util_init_aux_jacks(struct simple_util_priv *priv, char *prefix)
798{
799 struct snd_soc_card *card = simple_priv_to_card(priv);
800 struct snd_soc_component *component;
801 int found_jack_index = 0;
802 int type = 0;
803 int num = 0;
804 int ret;
805
806 if (priv->aux_jacks)
807 return 0;
808
809 for_each_card_auxs(card, component) {
810 type = snd_soc_component_get_jack_type(component);
811 if (type > 0)
812 num++;
813 }
814 if (num < 1)
815 return 0;
816
817 priv->aux_jacks = devm_kcalloc(card->dev, num,
818 sizeof(struct snd_soc_jack), GFP_KERNEL);
819 if (!priv->aux_jacks)
820 return -ENOMEM;
821
822 for_each_card_auxs(card, component) {
823 char id[128];
824 struct snd_soc_jack *jack;
825
826 if (found_jack_index >= num)
827 break;
828
829 type = snd_soc_component_get_jack_type(component);
830 if (type <= 0)
831 continue;
832
833 /* create jack */
834 jack = &(priv->aux_jacks[found_jack_index++]);
835 snprintf(id, sizeof(id), "%s-jack", component->name);
836 ret = snd_soc_card_jack_new(card, id, type, jack);
837 if (ret)
838 continue;
839
840 (void)snd_soc_component_set_jack(component, jack, NULL);
841 }
842 return 0;
843}
844EXPORT_SYMBOL_GPL(simple_util_init_aux_jacks);
845
846int simple_util_init_priv(struct simple_util_priv *priv,
847 struct link_info *li)
848{
849 struct snd_soc_card *card = simple_priv_to_card(priv);
850 struct device *dev = simple_priv_to_dev(priv);
851 struct snd_soc_dai_link *dai_link;
852 struct simple_dai_props *dai_props;
853 struct simple_util_dai *dais;
854 struct snd_soc_dai_link_component *dlcs;
855 struct snd_soc_codec_conf *cconf = NULL;
856 int i, dai_num = 0, dlc_num = 0, cnf_num = 0;
857
858 dai_props = devm_kcalloc(dev, li->link, sizeof(*dai_props), GFP_KERNEL);
859 dai_link = devm_kcalloc(dev, li->link, sizeof(*dai_link), GFP_KERNEL);
860 if (!dai_props || !dai_link)
861 return -ENOMEM;
862
863 /*
864 * dais (= CPU+Codec)
865 * dlcs (= CPU+Codec+Platform)
866 */
867 for (i = 0; i < li->link; i++) {
868 int cc = li->num[i].cpus + li->num[i].codecs;
869
870 dai_num += cc;
871 dlc_num += cc + li->num[i].platforms;
872
873 if (!li->num[i].cpus)
874 cnf_num += li->num[i].codecs;
875 }
876
877 dais = devm_kcalloc(dev, dai_num, sizeof(*dais), GFP_KERNEL);
878 dlcs = devm_kcalloc(dev, dlc_num, sizeof(*dlcs), GFP_KERNEL);
879 if (!dais || !dlcs)
880 return -ENOMEM;
881
882 if (cnf_num) {
883 cconf = devm_kcalloc(dev, cnf_num, sizeof(*cconf), GFP_KERNEL);
884 if (!cconf)
885 return -ENOMEM;
886 }
887
888 dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
889 li->link, dai_num, cnf_num);
890
891 priv->dai_props = dai_props;
892 priv->dai_link = dai_link;
893 priv->dais = dais;
894 priv->dlcs = dlcs;
895 priv->codec_conf = cconf;
896
897 card->dai_link = priv->dai_link;
898 card->num_links = li->link;
899 card->codec_conf = cconf;
900 card->num_configs = cnf_num;
901
902 for (i = 0; i < li->link; i++) {
903 if (li->num[i].cpus) {
904 /* Normal CPU */
905 dai_link[i].cpus = dlcs;
906 dai_props[i].num.cpus =
907 dai_link[i].num_cpus = li->num[i].cpus;
908 dai_props[i].cpu_dai = dais;
909
910 dlcs += li->num[i].cpus;
911 dais += li->num[i].cpus;
912 } else {
913 /* DPCM Be's CPU = dummy */
914 dai_link[i].cpus = &snd_soc_dummy_dlc;
915 dai_props[i].num.cpus =
916 dai_link[i].num_cpus = 1;
917 }
918
919 if (li->num[i].codecs) {
920 /* Normal Codec */
921 dai_link[i].codecs = dlcs;
922 dai_props[i].num.codecs =
923 dai_link[i].num_codecs = li->num[i].codecs;
924 dai_props[i].codec_dai = dais;
925
926 dlcs += li->num[i].codecs;
927 dais += li->num[i].codecs;
928
929 if (!li->num[i].cpus) {
930 /* DPCM Be's Codec */
931 dai_props[i].codec_conf = cconf;
932 cconf += li->num[i].codecs;
933 }
934 } else {
935 /* DPCM Fe's Codec = dummy */
936 dai_link[i].codecs = &snd_soc_dummy_dlc;
937 dai_props[i].num.codecs =
938 dai_link[i].num_codecs = 1;
939 }
940
941 if (li->num[i].platforms) {
942 /* Have Platform */
943 dai_link[i].platforms = dlcs;
944 dai_props[i].num.platforms =
945 dai_link[i].num_platforms = li->num[i].platforms;
946
947 dlcs += li->num[i].platforms;
948 } else {
949 /* Doesn't have Platform */
950 dai_link[i].platforms = NULL;
951 dai_props[i].num.platforms =
952 dai_link[i].num_platforms = 0;
953 }
954 }
955
956 return 0;
957}
958EXPORT_SYMBOL_GPL(simple_util_init_priv);
959
960void simple_util_remove(struct platform_device *pdev)
961{
962 struct snd_soc_card *card = platform_get_drvdata(pdev);
963
964 simple_util_clean_reference(card);
965}
966EXPORT_SYMBOL_GPL(simple_util_remove);
967
968int graph_util_card_probe(struct snd_soc_card *card)
969{
970 struct simple_util_priv *priv = snd_soc_card_get_drvdata(card);
971 int ret;
972
973 ret = simple_util_init_hp(card, &priv->hp_jack, NULL);
974 if (ret < 0)
975 return ret;
976
977 ret = simple_util_init_mic(card, &priv->mic_jack, NULL);
978 if (ret < 0)
979 return ret;
980
981 return 0;
982}
983EXPORT_SYMBOL_GPL(graph_util_card_probe);
984
985int graph_util_is_ports0(struct device_node *np)
986{
987 struct device_node *port, *ports, *ports0, *top;
988 int ret;
989
990 /* np is "endpoint" or "port" */
991 if (of_node_name_eq(np, "endpoint")) {
992 port = of_get_parent(np);
993 } else {
994 port = np;
995 of_node_get(port);
996 }
997
998 ports = of_get_parent(port);
999 top = of_get_parent(ports);
1000 ports0 = of_get_child_by_name(top, "ports");
1001
1002 ret = ports0 == ports;
1003
1004 of_node_put(port);
1005 of_node_put(ports);
1006 of_node_put(ports0);
1007 of_node_put(top);
1008
1009 return ret;
1010}
1011EXPORT_SYMBOL_GPL(graph_util_is_ports0);
1012
1013static int graph_get_dai_id(struct device_node *ep)
1014{
1015 struct device_node *node;
1016 struct device_node *endpoint;
1017 struct of_endpoint info;
1018 int i, id;
1019 int ret;
1020
1021 /* use driver specified DAI ID if exist */
1022 ret = snd_soc_get_dai_id(ep);
1023 if (ret != -ENOTSUPP)
1024 return ret;
1025
1026 /* use endpoint/port reg if exist */
1027 ret = of_graph_parse_endpoint(ep, &info);
1028 if (ret == 0) {
1029 /*
1030 * Because it will count port/endpoint if it doesn't have "reg".
1031 * But, we can't judge whether it has "no reg", or "reg = <0>"
1032 * only of_graph_parse_endpoint().
1033 * We need to check "reg" property
1034 */
1035 if (of_property_present(ep, "reg"))
1036 return info.id;
1037
1038 node = of_get_parent(ep);
1039 ret = of_property_present(node, "reg");
1040 of_node_put(node);
1041 if (ret)
1042 return info.port;
1043 }
1044 node = of_graph_get_port_parent(ep);
1045
1046 /*
1047 * Non HDMI sound case, counting port/endpoint on its DT
1048 * is enough. Let's count it.
1049 */
1050 i = 0;
1051 id = -1;
1052 for_each_endpoint_of_node(node, endpoint) {
1053 if (endpoint == ep)
1054 id = i;
1055 i++;
1056 }
1057
1058 of_node_put(node);
1059
1060 if (id < 0)
1061 return -ENODEV;
1062
1063 return id;
1064}
1065
1066int graph_util_parse_dai(struct device *dev, struct device_node *ep,
1067 struct snd_soc_dai_link_component *dlc, int *is_single_link)
1068{
1069 struct device_node *node;
1070 struct of_phandle_args args = {};
1071 struct snd_soc_dai *dai;
1072 int ret;
1073
1074 if (!ep)
1075 return 0;
1076
1077 node = of_graph_get_port_parent(ep);
1078
1079 /*
1080 * Try to find from DAI node
1081 */
1082 args.np = ep;
1083 dai = snd_soc_get_dai_via_args(&args);
1084 if (dai) {
1085 dlc->dai_name = snd_soc_dai_name_get(dai);
1086 dlc->dai_args = snd_soc_copy_dai_args(dev, &args);
1087 if (!dlc->dai_args)
1088 return -ENOMEM;
1089
1090 goto parse_dai_end;
1091 }
1092
1093 /* Get dai->name */
1094 args.np = node;
1095 args.args[0] = graph_get_dai_id(ep);
1096 args.args_count = (of_graph_get_endpoint_count(node) > 1);
1097
1098 /*
1099 * FIXME
1100 *
1101 * Here, dlc->dai_name is pointer to CPU/Codec DAI name.
1102 * If user unbinded CPU or Codec driver, but not for Sound Card,
1103 * dlc->dai_name is keeping unbinded CPU or Codec
1104 * driver's pointer.
1105 *
1106 * If user re-bind CPU or Codec driver again, ALSA SoC will try
1107 * to rebind Card via snd_soc_try_rebind_card(), but because of
1108 * above reason, it might can't bind Sound Card.
1109 * Because Sound Card is pointing to released dai_name pointer.
1110 *
1111 * To avoid this rebind Card issue,
1112 * 1) It needs to alloc memory to keep dai_name eventhough
1113 * CPU or Codec driver was unbinded, or
1114 * 2) user need to rebind Sound Card everytime
1115 * if he unbinded CPU or Codec.
1116 */
1117 ret = snd_soc_get_dlc(&args, dlc);
1118 if (ret < 0) {
1119 of_node_put(node);
1120 return ret;
1121 }
1122
1123parse_dai_end:
1124 if (is_single_link)
1125 *is_single_link = of_graph_get_endpoint_count(node) == 1;
1126
1127 return 0;
1128}
1129EXPORT_SYMBOL_GPL(graph_util_parse_dai);
1130
1131int graph_util_parse_link_direction(struct device_node *np,
1132 bool *playback_only, bool *capture_only)
1133{
1134 bool is_playback_only = false;
1135 bool is_capture_only = false;
1136
1137 is_playback_only = of_property_read_bool(np, "playback-only");
1138 is_capture_only = of_property_read_bool(np, "capture-only");
1139
1140 if (is_playback_only && is_capture_only)
1141 return -EINVAL;
1142
1143 *playback_only = is_playback_only;
1144 *capture_only = is_capture_only;
1145
1146 return 0;
1147}
1148EXPORT_SYMBOL_GPL(graph_util_parse_link_direction);
1149
1150/* Module information */
1151MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1152MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");
1153MODULE_LICENSE("GPL v2");