1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // ASoC simple sound card support
4 //
5 // Copyright (C) 2012 Renesas Solutions Corp.
6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7
8 #include <linux/clk.h>
9 #include <linux/device.h>
10 #include <linux/module.h>
11 #include <linux/of.h>
12 #include <linux/of_device.h>
13 #include <linux/platform_device.h>
14 #include <linux/string.h>
15 #include <sound/simple_card.h>
16 #include <sound/soc-dai.h>
17 #include <sound/soc.h>
18
19 #define DPCM_SELECTABLE 1
20
21 #define DAI "sound-dai"
22 #define CELL "#sound-dai-cells"
23 #define PREFIX "simple-audio-card,"
24
25 static const struct snd_soc_ops simple_ops = {
26 .startup = asoc_simple_startup,
27 .shutdown = asoc_simple_shutdown,
28 .hw_params = asoc_simple_hw_params,
29 };
30
asoc_simple_parse_platform(struct device_node * node,struct snd_soc_dai_link_component * dlc)31 static int asoc_simple_parse_platform(struct device_node *node,
32 struct snd_soc_dai_link_component *dlc)
33 {
34 struct of_phandle_args args;
35 int ret;
36
37 if (!node)
38 return 0;
39
40 /*
41 * Get node via "sound-dai = <&phandle port>"
42 * it will be used as xxx_of_node on soc_bind_dai_link()
43 */
44 ret = of_parse_phandle_with_args(node, DAI, CELL, 0, &args);
45 if (ret)
46 return ret;
47
48 /* dai_name is not required and may not exist for plat component */
49
50 dlc->of_node = args.np;
51
52 return 0;
53 }
54
asoc_simple_parse_dai(struct device_node * node,struct snd_soc_dai_link_component * dlc,int * is_single_link)55 static int asoc_simple_parse_dai(struct device_node *node,
56 struct snd_soc_dai_link_component *dlc,
57 int *is_single_link)
58 {
59 struct of_phandle_args args;
60 int ret;
61
62 if (!node)
63 return 0;
64
65 /*
66 * Get node via "sound-dai = <&phandle port>"
67 * it will be used as xxx_of_node on soc_bind_dai_link()
68 */
69 ret = of_parse_phandle_with_args(node, DAI, CELL, 0, &args);
70 if (ret)
71 return ret;
72
73 /*
74 * FIXME
75 *
76 * Here, dlc->dai_name is pointer to CPU/Codec DAI name.
77 * If user unbinded CPU or Codec driver, but not for Sound Card,
78 * dlc->dai_name is keeping unbinded CPU or Codec
79 * driver's pointer.
80 *
81 * If user re-bind CPU or Codec driver again, ALSA SoC will try
82 * to rebind Card via snd_soc_try_rebind_card(), but because of
83 * above reason, it might can't bind Sound Card.
84 * Because Sound Card is pointing to released dai_name pointer.
85 *
86 * To avoid this rebind Card issue,
87 * 1) It needs to alloc memory to keep dai_name eventhough
88 * CPU or Codec driver was unbinded, or
89 * 2) user need to rebind Sound Card everytime
90 * if he unbinded CPU or Codec.
91 */
92 ret = snd_soc_of_get_dai_name(node, &dlc->dai_name);
93 if (ret < 0)
94 return ret;
95
96 dlc->of_node = args.np;
97
98 if (is_single_link)
99 *is_single_link = !args.args_count;
100
101 return 0;
102 }
103
simple_parse_convert(struct device * dev,struct device_node * np,struct asoc_simple_data * adata)104 static void simple_parse_convert(struct device *dev,
105 struct device_node *np,
106 struct asoc_simple_data *adata)
107 {
108 struct device_node *top = dev->of_node;
109 struct device_node *node = of_get_parent(np);
110
111 asoc_simple_parse_convert(top, PREFIX, adata);
112 asoc_simple_parse_convert(node, PREFIX, adata);
113 asoc_simple_parse_convert(node, NULL, adata);
114 asoc_simple_parse_convert(np, NULL, adata);
115
116 of_node_put(node);
117 }
118
simple_parse_mclk_fs(struct device_node * top,struct device_node * np,struct simple_dai_props * props,char * prefix)119 static void simple_parse_mclk_fs(struct device_node *top,
120 struct device_node *np,
121 struct simple_dai_props *props,
122 char *prefix)
123 {
124 struct device_node *node = of_get_parent(np);
125 char prop[128];
126
127 snprintf(prop, sizeof(prop), "%smclk-fs", PREFIX);
128 of_property_read_u32(top, prop, &props->mclk_fs);
129
130 snprintf(prop, sizeof(prop), "%smclk-fs", prefix);
131 of_property_read_u32(node, prop, &props->mclk_fs);
132 of_property_read_u32(np, prop, &props->mclk_fs);
133
134 of_node_put(node);
135 }
136
simple_parse_node(struct asoc_simple_priv * priv,struct device_node * np,struct link_info * li,char * prefix,int * cpu)137 static int simple_parse_node(struct asoc_simple_priv *priv,
138 struct device_node *np,
139 struct link_info *li,
140 char *prefix,
141 int *cpu)
142 {
143 struct device *dev = simple_priv_to_dev(priv);
144 struct device_node *top = dev->of_node;
145 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
146 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
147 struct snd_soc_dai_link_component *dlc;
148 struct asoc_simple_dai *dai;
149 int ret;
150
151 if (cpu) {
152 dlc = asoc_link_to_cpu(dai_link, 0);
153 dai = simple_props_to_dai_cpu(dai_props, 0);
154 } else {
155 dlc = asoc_link_to_codec(dai_link, 0);
156 dai = simple_props_to_dai_codec(dai_props, 0);
157 }
158
159 simple_parse_mclk_fs(top, np, dai_props, prefix);
160
161 ret = asoc_simple_parse_dai(np, dlc, cpu);
162 if (ret)
163 return ret;
164
165 ret = asoc_simple_parse_clk(dev, np, dai, dlc);
166 if (ret)
167 return ret;
168
169 ret = asoc_simple_parse_tdm(np, dai);
170 if (ret)
171 return ret;
172
173 return 0;
174 }
175
simple_link_init(struct asoc_simple_priv * priv,struct device_node * node,struct device_node * codec,struct link_info * li,char * prefix,char * name)176 static int simple_link_init(struct asoc_simple_priv *priv,
177 struct device_node *node,
178 struct device_node *codec,
179 struct link_info *li,
180 char *prefix, char *name)
181 {
182 struct device *dev = simple_priv_to_dev(priv);
183 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
184 int ret;
185
186 ret = asoc_simple_parse_daifmt(dev, node, codec,
187 prefix, &dai_link->dai_fmt);
188 if (ret < 0)
189 return 0;
190
191 dai_link->init = asoc_simple_dai_init;
192 dai_link->ops = &simple_ops;
193
194 return asoc_simple_set_dailink_name(dev, dai_link, name);
195 }
196
simple_dai_link_of_dpcm(struct asoc_simple_priv * priv,struct device_node * np,struct device_node * codec,struct link_info * li,bool is_top)197 static int simple_dai_link_of_dpcm(struct asoc_simple_priv *priv,
198 struct device_node *np,
199 struct device_node *codec,
200 struct link_info *li,
201 bool is_top)
202 {
203 struct device *dev = simple_priv_to_dev(priv);
204 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
205 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
206 struct device_node *top = dev->of_node;
207 struct device_node *node = of_get_parent(np);
208 char *prefix = "";
209 char dai_name[64];
210 int ret;
211
212 dev_dbg(dev, "link_of DPCM (%pOF)\n", np);
213
214 /* For single DAI link & old style of DT node */
215 if (is_top)
216 prefix = PREFIX;
217
218 if (li->cpu) {
219 struct snd_soc_dai_link_component *cpus = asoc_link_to_cpu(dai_link, 0);
220 struct snd_soc_dai_link_component *platforms = asoc_link_to_platform(dai_link, 0);
221 int is_single_links = 0;
222
223 /* Codec is dummy */
224
225 /* FE settings */
226 dai_link->dynamic = 1;
227 dai_link->dpcm_merged_format = 1;
228
229 ret = simple_parse_node(priv, np, li, prefix, &is_single_links);
230 if (ret < 0)
231 goto out_put_node;
232
233 snprintf(dai_name, sizeof(dai_name), "fe.%s", cpus->dai_name);
234
235 asoc_simple_canonicalize_cpu(cpus, is_single_links);
236 asoc_simple_canonicalize_platform(platforms, cpus);
237 } else {
238 struct snd_soc_dai_link_component *codecs = asoc_link_to_codec(dai_link, 0);
239 struct snd_soc_codec_conf *cconf;
240
241 /* CPU is dummy */
242
243 /* BE settings */
244 dai_link->no_pcm = 1;
245 dai_link->be_hw_params_fixup = asoc_simple_be_hw_params_fixup;
246
247 cconf = simple_props_to_codec_conf(dai_props, 0);
248
249 ret = simple_parse_node(priv, np, li, prefix, NULL);
250 if (ret < 0)
251 goto out_put_node;
252
253 snprintf(dai_name, sizeof(dai_name), "be.%s", codecs->dai_name);
254
255 /* check "prefix" from top node */
256 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node,
257 PREFIX "prefix");
258 snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node,
259 "prefix");
260 snd_soc_of_parse_node_prefix(np, cconf, codecs->of_node,
261 "prefix");
262 }
263
264 simple_parse_convert(dev, np, &dai_props->adata);
265
266 snd_soc_dai_link_set_capabilities(dai_link);
267
268 ret = simple_link_init(priv, node, codec, li, prefix, dai_name);
269
270 out_put_node:
271 li->link++;
272
273 of_node_put(node);
274 return ret;
275 }
276
simple_dai_link_of(struct asoc_simple_priv * priv,struct device_node * np,struct device_node * codec,struct link_info * li,bool is_top)277 static int simple_dai_link_of(struct asoc_simple_priv *priv,
278 struct device_node *np,
279 struct device_node *codec,
280 struct link_info *li,
281 bool is_top)
282 {
283 struct device *dev = simple_priv_to_dev(priv);
284 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
285 struct snd_soc_dai_link_component *cpus = asoc_link_to_cpu(dai_link, 0);
286 struct snd_soc_dai_link_component *codecs = asoc_link_to_codec(dai_link, 0);
287 struct snd_soc_dai_link_component *platforms = asoc_link_to_platform(dai_link, 0);
288 struct device_node *cpu = NULL;
289 struct device_node *node = NULL;
290 struct device_node *plat = NULL;
291 char dai_name[64];
292 char prop[128];
293 char *prefix = "";
294 int ret, single_cpu = 0;
295
296 cpu = np;
297 node = of_get_parent(np);
298
299 dev_dbg(dev, "link_of (%pOF)\n", node);
300
301 /* For single DAI link & old style of DT node */
302 if (is_top)
303 prefix = PREFIX;
304
305 snprintf(prop, sizeof(prop), "%splat", prefix);
306 plat = of_get_child_by_name(node, prop);
307
308 ret = simple_parse_node(priv, cpu, li, prefix, &single_cpu);
309 if (ret < 0)
310 goto dai_link_of_err;
311
312 ret = simple_parse_node(priv, codec, li, prefix, NULL);
313 if (ret < 0)
314 goto dai_link_of_err;
315
316 ret = asoc_simple_parse_platform(plat, platforms);
317 if (ret < 0)
318 goto dai_link_of_err;
319
320 snprintf(dai_name, sizeof(dai_name),
321 "%s-%s", cpus->dai_name, codecs->dai_name);
322
323 asoc_simple_canonicalize_cpu(cpus, single_cpu);
324 asoc_simple_canonicalize_platform(platforms, cpus);
325
326 ret = simple_link_init(priv, node, codec, li, prefix, dai_name);
327
328 dai_link_of_err:
329 of_node_put(plat);
330 of_node_put(node);
331
332 li->link++;
333
334 return ret;
335 }
336
__simple_for_each_link(struct asoc_simple_priv * priv,struct link_info * li,int (* func_noml)(struct asoc_simple_priv * priv,struct device_node * np,struct device_node * codec,struct link_info * li,bool is_top),int (* func_dpcm)(struct asoc_simple_priv * priv,struct device_node * np,struct device_node * codec,struct link_info * li,bool is_top))337 static int __simple_for_each_link(struct asoc_simple_priv *priv,
338 struct link_info *li,
339 int (*func_noml)(struct asoc_simple_priv *priv,
340 struct device_node *np,
341 struct device_node *codec,
342 struct link_info *li, bool is_top),
343 int (*func_dpcm)(struct asoc_simple_priv *priv,
344 struct device_node *np,
345 struct device_node *codec,
346 struct link_info *li, bool is_top))
347 {
348 struct device *dev = simple_priv_to_dev(priv);
349 struct device_node *top = dev->of_node;
350 struct device_node *node;
351 uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev);
352 bool is_top = 0;
353 int ret = 0;
354
355 /* Check if it has dai-link */
356 node = of_get_child_by_name(top, PREFIX "dai-link");
357 if (!node) {
358 node = of_node_get(top);
359 is_top = 1;
360 }
361
362 /* loop for all dai-link */
363 do {
364 struct asoc_simple_data adata;
365 struct device_node *codec;
366 struct device_node *plat;
367 struct device_node *np;
368 int num = of_get_child_count(node);
369
370 /* get codec */
371 codec = of_get_child_by_name(node, is_top ?
372 PREFIX "codec" : "codec");
373 if (!codec) {
374 ret = -ENODEV;
375 goto error;
376 }
377 /* get platform */
378 plat = of_get_child_by_name(node, is_top ?
379 PREFIX "plat" : "plat");
380
381 /* get convert-xxx property */
382 memset(&adata, 0, sizeof(adata));
383 for_each_child_of_node(node, np)
384 simple_parse_convert(dev, np, &adata);
385
386 /* loop for all CPU/Codec node */
387 for_each_child_of_node(node, np) {
388 if (plat == np)
389 continue;
390 /*
391 * It is DPCM
392 * if it has many CPUs,
393 * or has convert-xxx property
394 */
395 if (dpcm_selectable &&
396 (num > 2 || asoc_simple_is_convert_required(&adata))) {
397 /*
398 * np
399 * |1(CPU)|0(Codec) li->cpu
400 * CPU |Pass |return
401 * Codec |return|Pass
402 */
403 if (li->cpu != (np == codec))
404 ret = func_dpcm(priv, np, codec, li, is_top);
405 /* else normal sound */
406 } else {
407 /*
408 * np
409 * |1(CPU)|0(Codec) li->cpu
410 * CPU |Pass |return
411 * Codec |return|return
412 */
413 if (li->cpu && (np != codec))
414 ret = func_noml(priv, np, codec, li, is_top);
415 }
416
417 if (ret < 0) {
418 of_node_put(codec);
419 of_node_put(np);
420 goto error;
421 }
422 }
423
424 of_node_put(codec);
425 node = of_get_next_child(top, node);
426 } while (!is_top && node);
427
428 error:
429 of_node_put(node);
430 return ret;
431 }
432
simple_for_each_link(struct asoc_simple_priv * priv,struct link_info * li,int (* func_noml)(struct asoc_simple_priv * priv,struct device_node * np,struct device_node * codec,struct link_info * li,bool is_top),int (* func_dpcm)(struct asoc_simple_priv * priv,struct device_node * np,struct device_node * codec,struct link_info * li,bool is_top))433 static int simple_for_each_link(struct asoc_simple_priv *priv,
434 struct link_info *li,
435 int (*func_noml)(struct asoc_simple_priv *priv,
436 struct device_node *np,
437 struct device_node *codec,
438 struct link_info *li, bool is_top),
439 int (*func_dpcm)(struct asoc_simple_priv *priv,
440 struct device_node *np,
441 struct device_node *codec,
442 struct link_info *li, bool is_top))
443 {
444 int ret;
445 /*
446 * Detect all CPU first, and Detect all Codec 2nd.
447 *
448 * In Normal sound case, all DAIs are detected
449 * as "CPU-Codec".
450 *
451 * In DPCM sound case,
452 * all CPUs are detected as "CPU-dummy", and
453 * all Codecs are detected as "dummy-Codec".
454 * To avoid random sub-device numbering,
455 * detect "dummy-Codec" in last;
456 */
457 for (li->cpu = 1; li->cpu >= 0; li->cpu--) {
458 ret = __simple_for_each_link(priv, li, func_noml, func_dpcm);
459 if (ret < 0)
460 break;
461 }
462
463 return ret;
464 }
465
simple_parse_of(struct asoc_simple_priv * priv,struct link_info * li)466 static int simple_parse_of(struct asoc_simple_priv *priv, struct link_info *li)
467 {
468 struct snd_soc_card *card = simple_priv_to_card(priv);
469 int ret;
470
471 ret = asoc_simple_parse_widgets(card, PREFIX);
472 if (ret < 0)
473 return ret;
474
475 ret = asoc_simple_parse_routing(card, PREFIX);
476 if (ret < 0)
477 return ret;
478
479 ret = asoc_simple_parse_pin_switches(card, PREFIX);
480 if (ret < 0)
481 return ret;
482
483 /* Single/Muti DAI link(s) & New style of DT node */
484 memset(li, 0, sizeof(*li));
485 ret = simple_for_each_link(priv, li,
486 simple_dai_link_of,
487 simple_dai_link_of_dpcm);
488 if (ret < 0)
489 return ret;
490
491 ret = asoc_simple_parse_card_name(card, PREFIX);
492 if (ret < 0)
493 return ret;
494
495 ret = snd_soc_of_parse_aux_devs(card, PREFIX "aux-devs");
496
497 return ret;
498 }
499
simple_count_noml(struct asoc_simple_priv * priv,struct device_node * np,struct device_node * codec,struct link_info * li,bool is_top)500 static int simple_count_noml(struct asoc_simple_priv *priv,
501 struct device_node *np,
502 struct device_node *codec,
503 struct link_info *li, bool is_top)
504 {
505 if (li->link >= SNDRV_MAX_LINKS) {
506 struct device *dev = simple_priv_to_dev(priv);
507
508 dev_err(dev, "too many links\n");
509 return -EINVAL;
510 }
511
512 li->num[li->link].cpus = 1;
513 li->num[li->link].codecs = 1;
514 li->num[li->link].platforms = 1;
515
516 li->link += 1;
517
518 return 0;
519 }
520
simple_count_dpcm(struct asoc_simple_priv * priv,struct device_node * np,struct device_node * codec,struct link_info * li,bool is_top)521 static int simple_count_dpcm(struct asoc_simple_priv *priv,
522 struct device_node *np,
523 struct device_node *codec,
524 struct link_info *li, bool is_top)
525 {
526 if (li->link >= SNDRV_MAX_LINKS) {
527 struct device *dev = simple_priv_to_dev(priv);
528
529 dev_err(dev, "too many links\n");
530 return -EINVAL;
531 }
532
533 if (li->cpu) {
534 li->num[li->link].cpus = 1;
535 li->num[li->link].platforms = 1;
536
537 li->link++; /* CPU-dummy */
538 } else {
539 li->num[li->link].codecs = 1;
540
541 li->link++; /* dummy-Codec */
542 }
543
544 return 0;
545 }
546
simple_get_dais_count(struct asoc_simple_priv * priv,struct link_info * li)547 static int simple_get_dais_count(struct asoc_simple_priv *priv,
548 struct link_info *li)
549 {
550 struct device *dev = simple_priv_to_dev(priv);
551 struct device_node *top = dev->of_node;
552
553 /*
554 * link_num : number of links.
555 * CPU-Codec / CPU-dummy / dummy-Codec
556 * dais_num : number of DAIs
557 * ccnf_num : number of codec_conf
558 * same number for "dummy-Codec"
559 *
560 * ex1)
561 * CPU0 --- Codec0 link : 5
562 * CPU1 --- Codec1 dais : 7
563 * CPU2 -/ ccnf : 1
564 * CPU3 --- Codec2
565 *
566 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec
567 * => 7 DAIs = 4xCPU + 3xCodec
568 * => 1 ccnf = 1xdummy-Codec
569 *
570 * ex2)
571 * CPU0 --- Codec0 link : 5
572 * CPU1 --- Codec1 dais : 6
573 * CPU2 -/ ccnf : 1
574 * CPU3 -/
575 *
576 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec
577 * => 6 DAIs = 4xCPU + 2xCodec
578 * => 1 ccnf = 1xdummy-Codec
579 *
580 * ex3)
581 * CPU0 --- Codec0 link : 6
582 * CPU1 -/ dais : 6
583 * CPU2 --- Codec1 ccnf : 2
584 * CPU3 -/
585 *
586 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec
587 * => 6 DAIs = 4xCPU + 2xCodec
588 * => 2 ccnf = 2xdummy-Codec
589 *
590 * ex4)
591 * CPU0 --- Codec0 (convert-rate) link : 3
592 * CPU1 --- Codec1 dais : 4
593 * ccnf : 1
594 *
595 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec
596 * => 4 DAIs = 2xCPU + 2xCodec
597 * => 1 ccnf = 1xdummy-Codec
598 */
599 if (!top) {
600 li->num[0].cpus = 1;
601 li->num[0].codecs = 1;
602 li->num[0].platforms = 1;
603
604 li->link = 1;
605 return 0;
606 }
607
608 return simple_for_each_link(priv, li,
609 simple_count_noml,
610 simple_count_dpcm);
611 }
612
simple_soc_probe(struct snd_soc_card * card)613 static int simple_soc_probe(struct snd_soc_card *card)
614 {
615 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card);
616 int ret;
617
618 ret = asoc_simple_init_hp(card, &priv->hp_jack, PREFIX);
619 if (ret < 0)
620 return ret;
621
622 ret = asoc_simple_init_mic(card, &priv->mic_jack, PREFIX);
623 if (ret < 0)
624 return ret;
625
626 ret = asoc_simple_init_aux_jacks(priv, PREFIX);
627 if (ret < 0)
628 return ret;
629
630 return 0;
631 }
632
asoc_simple_probe(struct platform_device * pdev)633 static int asoc_simple_probe(struct platform_device *pdev)
634 {
635 struct asoc_simple_priv *priv;
636 struct device *dev = &pdev->dev;
637 struct device_node *np = dev->of_node;
638 struct snd_soc_card *card;
639 struct link_info *li;
640 int ret;
641
642 /* Allocate the private data and the DAI link array */
643 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
644 if (!priv)
645 return -ENOMEM;
646
647 card = simple_priv_to_card(priv);
648 card->owner = THIS_MODULE;
649 card->dev = dev;
650 card->probe = simple_soc_probe;
651 card->driver_name = "simple-card";
652
653 li = devm_kzalloc(dev, sizeof(*li), GFP_KERNEL);
654 if (!li)
655 return -ENOMEM;
656
657 ret = simple_get_dais_count(priv, li);
658 if (ret < 0)
659 return ret;
660
661 if (!li->link)
662 return -EINVAL;
663
664 ret = asoc_simple_init_priv(priv, li);
665 if (ret < 0)
666 return ret;
667
668 if (np && of_device_is_available(np)) {
669
670 ret = simple_parse_of(priv, li);
671 if (ret < 0) {
672 dev_err_probe(dev, ret, "parse error\n");
673 goto err;
674 }
675
676 } else {
677 struct asoc_simple_card_info *cinfo;
678 struct snd_soc_dai_link_component *cpus;
679 struct snd_soc_dai_link_component *codecs;
680 struct snd_soc_dai_link_component *platform;
681 struct snd_soc_dai_link *dai_link = priv->dai_link;
682 struct simple_dai_props *dai_props = priv->dai_props;
683
684 cinfo = dev->platform_data;
685 if (!cinfo) {
686 dev_err(dev, "no info for asoc-simple-card\n");
687 return -EINVAL;
688 }
689
690 if (!cinfo->name ||
691 !cinfo->codec_dai.name ||
692 !cinfo->codec ||
693 !cinfo->platform ||
694 !cinfo->cpu_dai.name) {
695 dev_err(dev, "insufficient asoc_simple_card_info settings\n");
696 return -EINVAL;
697 }
698
699 cpus = dai_link->cpus;
700 cpus->dai_name = cinfo->cpu_dai.name;
701
702 codecs = dai_link->codecs;
703 codecs->name = cinfo->codec;
704 codecs->dai_name = cinfo->codec_dai.name;
705
706 platform = dai_link->platforms;
707 platform->name = cinfo->platform;
708
709 card->name = (cinfo->card) ? cinfo->card : cinfo->name;
710 dai_link->name = cinfo->name;
711 dai_link->stream_name = cinfo->name;
712 dai_link->dai_fmt = cinfo->daifmt;
713 dai_link->init = asoc_simple_dai_init;
714 memcpy(dai_props->cpu_dai, &cinfo->cpu_dai,
715 sizeof(*dai_props->cpu_dai));
716 memcpy(dai_props->codec_dai, &cinfo->codec_dai,
717 sizeof(*dai_props->codec_dai));
718 }
719
720 snd_soc_card_set_drvdata(card, priv);
721
722 asoc_simple_debug_info(priv);
723
724 ret = devm_snd_soc_register_card(dev, card);
725 if (ret < 0)
726 goto err;
727
728 devm_kfree(dev, li);
729 return 0;
730 err:
731 asoc_simple_clean_reference(card);
732
733 return ret;
734 }
735
736 static const struct of_device_id simple_of_match[] = {
737 { .compatible = "simple-audio-card", },
738 { .compatible = "simple-scu-audio-card",
739 .data = (void *)DPCM_SELECTABLE },
740 {},
741 };
742 MODULE_DEVICE_TABLE(of, simple_of_match);
743
744 static struct platform_driver asoc_simple_card = {
745 .driver = {
746 .name = "asoc-simple-card",
747 .pm = &snd_soc_pm_ops,
748 .of_match_table = simple_of_match,
749 },
750 .probe = asoc_simple_probe,
751 .remove = asoc_simple_remove,
752 };
753
754 module_platform_driver(asoc_simple_card);
755
756 MODULE_ALIAS("platform:asoc-simple-card");
757 MODULE_LICENSE("GPL v2");
758 MODULE_DESCRIPTION("ASoC Simple Sound Card");
759 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
760