1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // ASoC audio graph sound card support
4 //
5 // Copyright (C) 2016 Renesas Solutions Corp.
6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 //
8 // based on ${LINUX}/sound/soc/generic/simple-card.c
9
10 #include <linux/clk.h>
11 #include <linux/device.h>
12 #include <linux/gpio.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/module.h>
15 #include <linux/of.h>
16 #include <linux/of_device.h>
17 #include <linux/of_gpio.h>
18 #include <linux/of_graph.h>
19 #include <linux/platform_device.h>
20 #include <linux/string.h>
21 #include <sound/simple_card_utils.h>
22
23 #define DPCM_SELECTABLE 1
24
25 #define PREFIX "audio-graph-card,"
26
graph_outdrv_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)27 static int graph_outdrv_event(struct snd_soc_dapm_widget *w,
28 struct snd_kcontrol *kcontrol,
29 int event)
30 {
31 struct snd_soc_dapm_context *dapm = w->dapm;
32 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(dapm->card);
33
34 switch (event) {
35 case SND_SOC_DAPM_POST_PMU:
36 gpiod_set_value_cansleep(priv->pa_gpio, 1);
37 break;
38 case SND_SOC_DAPM_PRE_PMD:
39 gpiod_set_value_cansleep(priv->pa_gpio, 0);
40 break;
41 default:
42 return -EINVAL;
43 }
44
45 return 0;
46 }
47
48 static const struct snd_soc_dapm_widget graph_dapm_widgets[] = {
49 SND_SOC_DAPM_OUT_DRV_E("Amplifier", SND_SOC_NOPM,
50 0, 0, NULL, 0, graph_outdrv_event,
51 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
52 };
53
54 static const struct snd_soc_ops graph_ops = {
55 .startup = asoc_simple_startup,
56 .shutdown = asoc_simple_shutdown,
57 .hw_params = asoc_simple_hw_params,
58 };
59
graph_get_dai_id(struct device_node * ep)60 static int graph_get_dai_id(struct device_node *ep)
61 {
62 struct device_node *node;
63 struct device_node *endpoint;
64 struct of_endpoint info;
65 int i, id;
66 const u32 *reg;
67 int ret;
68
69 /* use driver specified DAI ID if exist */
70 ret = snd_soc_get_dai_id(ep);
71 if (ret != -ENOTSUPP)
72 return ret;
73
74 /* use endpoint/port reg if exist */
75 ret = of_graph_parse_endpoint(ep, &info);
76 if (ret == 0) {
77 /*
78 * Because it will count port/endpoint if it doesn't have "reg".
79 * But, we can't judge whether it has "no reg", or "reg = <0>"
80 * only of_graph_parse_endpoint().
81 * We need to check "reg" property
82 */
83 if (of_get_property(ep, "reg", NULL))
84 return info.id;
85
86 node = of_get_parent(ep);
87 reg = of_get_property(node, "reg", NULL);
88 of_node_put(node);
89 if (reg)
90 return info.port;
91 }
92 node = of_graph_get_port_parent(ep);
93
94 /*
95 * Non HDMI sound case, counting port/endpoint on its DT
96 * is enough. Let's count it.
97 */
98 i = 0;
99 id = -1;
100 for_each_endpoint_of_node(node, endpoint) {
101 if (endpoint == ep)
102 id = i;
103 i++;
104 }
105
106 of_node_put(node);
107
108 if (id < 0)
109 return -ENODEV;
110
111 return id;
112 }
113
asoc_simple_parse_dai(struct device_node * ep,struct snd_soc_dai_link_component * dlc,int * is_single_link)114 static int asoc_simple_parse_dai(struct device_node *ep,
115 struct snd_soc_dai_link_component *dlc,
116 int *is_single_link)
117 {
118 struct device_node *node;
119 struct of_phandle_args args;
120 int ret;
121
122 if (!ep)
123 return 0;
124
125 node = of_graph_get_port_parent(ep);
126
127 /* Get dai->name */
128 args.np = node;
129 args.args[0] = graph_get_dai_id(ep);
130 args.args_count = (of_graph_get_endpoint_count(node) > 1);
131
132 /*
133 * FIXME
134 *
135 * Here, dlc->dai_name is pointer to CPU/Codec DAI name.
136 * If user unbinded CPU or Codec driver, but not for Sound Card,
137 * dlc->dai_name is keeping unbinded CPU or Codec
138 * driver's pointer.
139 *
140 * If user re-bind CPU or Codec driver again, ALSA SoC will try
141 * to rebind Card via snd_soc_try_rebind_card(), but because of
142 * above reason, it might can't bind Sound Card.
143 * Because Sound Card is pointing to released dai_name pointer.
144 *
145 * To avoid this rebind Card issue,
146 * 1) It needs to alloc memory to keep dai_name eventhough
147 * CPU or Codec driver was unbinded, or
148 * 2) user need to rebind Sound Card everytime
149 * if he unbinded CPU or Codec.
150 */
151 ret = snd_soc_get_dai_name(&args, &dlc->dai_name);
152 if (ret < 0) {
153 of_node_put(node);
154 return ret;
155 }
156
157 dlc->of_node = node;
158
159 if (is_single_link)
160 *is_single_link = of_graph_get_endpoint_count(node) == 1;
161
162 return 0;
163 }
164
graph_parse_convert(struct device * dev,struct device_node * ep,struct asoc_simple_data * adata)165 static void graph_parse_convert(struct device *dev,
166 struct device_node *ep,
167 struct asoc_simple_data *adata)
168 {
169 struct device_node *top = dev->of_node;
170 struct device_node *port = of_get_parent(ep);
171 struct device_node *ports = of_get_parent(port);
172 struct device_node *node = of_graph_get_port_parent(ep);
173
174 asoc_simple_parse_convert(dev, top, NULL, adata);
175 asoc_simple_parse_convert(dev, node, PREFIX, adata);
176 asoc_simple_parse_convert(dev, ports, NULL, adata);
177 asoc_simple_parse_convert(dev, port, NULL, adata);
178 asoc_simple_parse_convert(dev, ep, NULL, adata);
179
180 of_node_put(port);
181 of_node_put(ports);
182 of_node_put(node);
183 }
184
graph_parse_mclk_fs(struct device_node * top,struct device_node * ep,struct simple_dai_props * props)185 static void graph_parse_mclk_fs(struct device_node *top,
186 struct device_node *ep,
187 struct simple_dai_props *props)
188 {
189 struct device_node *port = of_get_parent(ep);
190 struct device_node *ports = of_get_parent(port);
191 struct device_node *node = of_graph_get_port_parent(ep);
192
193 of_property_read_u32(top, "mclk-fs", &props->mclk_fs);
194 of_property_read_u32(ports, "mclk-fs", &props->mclk_fs);
195 of_property_read_u32(port, "mclk-fs", &props->mclk_fs);
196 of_property_read_u32(ep, "mclk-fs", &props->mclk_fs);
197
198 of_node_put(port);
199 of_node_put(ports);
200 of_node_put(node);
201 }
202
graph_dai_link_of_dpcm(struct asoc_simple_priv * priv,struct device_node * cpu_ep,struct device_node * codec_ep,struct link_info * li,int dup_codec)203 static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv,
204 struct device_node *cpu_ep,
205 struct device_node *codec_ep,
206 struct link_info *li,
207 int dup_codec)
208 {
209 struct device *dev = simple_priv_to_dev(priv);
210 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
211 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
212 struct device_node *top = dev->of_node;
213 struct device_node *ep = li->cpu ? cpu_ep : codec_ep;
214 struct device_node *port;
215 struct device_node *ports;
216 struct device_node *node;
217 struct asoc_simple_dai *dai;
218 struct snd_soc_dai_link_component *cpus = dai_link->cpus;
219 struct snd_soc_dai_link_component *codecs = dai_link->codecs;
220 int ret;
221
222 /* Do it all CPU endpoint, and 1st Codec endpoint */
223 if (!li->cpu && dup_codec)
224 return 0;
225
226 port = of_get_parent(ep);
227 ports = of_get_parent(port);
228 node = of_graph_get_port_parent(ep);
229
230 li->link++;
231
232 dev_dbg(dev, "link_of DPCM (%pOF)\n", ep);
233
234 if (li->cpu) {
235 int is_single_links = 0;
236
237 /* Codec is dummy */
238 codecs->of_node = NULL;
239 codecs->dai_name = "snd-soc-dummy-dai";
240 codecs->name = "snd-soc-dummy";
241
242 /* FE settings */
243 dai_link->dynamic = 1;
244 dai_link->dpcm_merged_format = 1;
245
246 dai =
247 dai_props->cpu_dai = &priv->dais[li->dais++];
248
249 ret = asoc_simple_parse_cpu(ep, dai_link, &is_single_links);
250 if (ret)
251 goto out_put_node;
252
253 ret = asoc_simple_parse_clk_cpu(dev, ep, dai_link, dai);
254 if (ret < 0)
255 goto out_put_node;
256
257 ret = asoc_simple_set_dailink_name(dev, dai_link,
258 "fe.%s",
259 cpus->dai_name);
260 if (ret < 0)
261 goto out_put_node;
262
263 /* card->num_links includes Codec */
264 asoc_simple_canonicalize_cpu(dai_link, is_single_links);
265 } else {
266 struct snd_soc_codec_conf *cconf;
267
268 /* CPU is dummy */
269 cpus->of_node = NULL;
270 cpus->dai_name = "snd-soc-dummy-dai";
271 cpus->name = "snd-soc-dummy";
272
273 /* BE settings */
274 dai_link->no_pcm = 1;
275 dai_link->be_hw_params_fixup = asoc_simple_be_hw_params_fixup;
276
277 dai =
278 dai_props->codec_dai = &priv->dais[li->dais++];
279
280 cconf =
281 dai_props->codec_conf = &priv->codec_conf[li->conf++];
282
283 ret = asoc_simple_parse_codec(ep, dai_link);
284 if (ret < 0)
285 goto out_put_node;
286
287 ret = asoc_simple_parse_clk_codec(dev, ep, dai_link, dai);
288 if (ret < 0)
289 goto out_put_node;
290
291 ret = asoc_simple_set_dailink_name(dev, dai_link,
292 "be.%s",
293 codecs->dai_name);
294 if (ret < 0)
295 goto out_put_node;
296
297 /* check "prefix" from top node */
298 snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node,
299 "prefix");
300 snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node,
301 PREFIX "prefix");
302 snd_soc_of_parse_node_prefix(ports, cconf, codecs->of_node,
303 "prefix");
304 snd_soc_of_parse_node_prefix(port, cconf, codecs->of_node,
305 "prefix");
306 }
307
308 graph_parse_convert(dev, ep, &dai_props->adata);
309 graph_parse_mclk_fs(top, ep, dai_props);
310
311 asoc_simple_canonicalize_platform(dai_link);
312
313 ret = asoc_simple_parse_tdm(ep, dai);
314 if (ret)
315 goto out_put_node;
316
317 ret = asoc_simple_parse_daifmt(dev, cpu_ep, codec_ep,
318 NULL, &dai_link->dai_fmt);
319 if (ret < 0)
320 goto out_put_node;
321
322 snd_soc_dai_link_set_capabilities(dai_link);
323
324 dai_link->ops = &graph_ops;
325 dai_link->init = asoc_simple_dai_init;
326
327 out_put_node:
328 of_node_put(ports);
329 of_node_put(port);
330 of_node_put(node);
331 return ret;
332 }
333
graph_dai_link_of(struct asoc_simple_priv * priv,struct device_node * cpu_ep,struct device_node * codec_ep,struct link_info * li)334 static int graph_dai_link_of(struct asoc_simple_priv *priv,
335 struct device_node *cpu_ep,
336 struct device_node *codec_ep,
337 struct link_info *li)
338 {
339 struct device *dev = simple_priv_to_dev(priv);
340 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
341 struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
342 struct device_node *top = dev->of_node;
343 struct asoc_simple_dai *cpu_dai;
344 struct asoc_simple_dai *codec_dai;
345 int ret, single_cpu = 0;
346
347 /* Do it only CPU turn */
348 if (!li->cpu)
349 return 0;
350
351 dev_dbg(dev, "link_of (%pOF)\n", cpu_ep);
352
353 li->link++;
354
355 cpu_dai =
356 dai_props->cpu_dai = &priv->dais[li->dais++];
357 codec_dai =
358 dai_props->codec_dai = &priv->dais[li->dais++];
359
360 /* Factor to mclk, used in hw_params() */
361 graph_parse_mclk_fs(top, cpu_ep, dai_props);
362 graph_parse_mclk_fs(top, codec_ep, dai_props);
363
364 ret = asoc_simple_parse_daifmt(dev, cpu_ep, codec_ep,
365 NULL, &dai_link->dai_fmt);
366 if (ret < 0)
367 return ret;
368
369 ret = asoc_simple_parse_cpu(cpu_ep, dai_link, &single_cpu);
370 if (ret < 0)
371 return ret;
372
373 ret = asoc_simple_parse_codec(codec_ep, dai_link);
374 if (ret < 0)
375 return ret;
376
377 ret = asoc_simple_parse_tdm(cpu_ep, cpu_dai);
378 if (ret < 0)
379 return ret;
380
381 ret = asoc_simple_parse_tdm(codec_ep, codec_dai);
382 if (ret < 0)
383 return ret;
384
385 ret = asoc_simple_parse_clk_cpu(dev, cpu_ep, dai_link, cpu_dai);
386 if (ret < 0)
387 return ret;
388
389 ret = asoc_simple_parse_clk_codec(dev, codec_ep, dai_link, codec_dai);
390 if (ret < 0)
391 return ret;
392
393 ret = asoc_simple_set_dailink_name(dev, dai_link,
394 "%s-%s",
395 dai_link->cpus->dai_name,
396 dai_link->codecs->dai_name);
397 if (ret < 0)
398 return ret;
399
400 dai_link->ops = &graph_ops;
401 dai_link->init = asoc_simple_dai_init;
402
403 asoc_simple_canonicalize_cpu(dai_link, single_cpu);
404 asoc_simple_canonicalize_platform(dai_link);
405
406 return 0;
407 }
408
graph_for_each_link(struct asoc_simple_priv * priv,struct link_info * li,int (* func_noml)(struct asoc_simple_priv * priv,struct device_node * cpu_ep,struct device_node * codec_ep,struct link_info * li),int (* func_dpcm)(struct asoc_simple_priv * priv,struct device_node * cpu_ep,struct device_node * codec_ep,struct link_info * li,int dup_codec))409 static int graph_for_each_link(struct asoc_simple_priv *priv,
410 struct link_info *li,
411 int (*func_noml)(struct asoc_simple_priv *priv,
412 struct device_node *cpu_ep,
413 struct device_node *codec_ep,
414 struct link_info *li),
415 int (*func_dpcm)(struct asoc_simple_priv *priv,
416 struct device_node *cpu_ep,
417 struct device_node *codec_ep,
418 struct link_info *li, int dup_codec))
419 {
420 struct of_phandle_iterator it;
421 struct device *dev = simple_priv_to_dev(priv);
422 struct device_node *node = dev->of_node;
423 struct device_node *cpu_port;
424 struct device_node *cpu_ep;
425 struct device_node *codec_ep;
426 struct device_node *codec_port;
427 struct device_node *codec_port_old = NULL;
428 struct asoc_simple_data adata;
429 uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev);
430 int rc, ret;
431
432 /* loop for all listed CPU port */
433 of_for_each_phandle(&it, rc, node, "dais", NULL, 0) {
434 cpu_port = it.node;
435 cpu_ep = NULL;
436
437 /* loop for all CPU endpoint */
438 while (1) {
439 cpu_ep = of_get_next_child(cpu_port, cpu_ep);
440 if (!cpu_ep)
441 break;
442
443 /* get codec */
444 codec_ep = of_graph_get_remote_endpoint(cpu_ep);
445 codec_port = of_get_parent(codec_ep);
446
447 /* get convert-xxx property */
448 memset(&adata, 0, sizeof(adata));
449 graph_parse_convert(dev, codec_ep, &adata);
450 graph_parse_convert(dev, cpu_ep, &adata);
451
452 /*
453 * It is DPCM
454 * if Codec port has many endpoints,
455 * or has convert-xxx property
456 */
457 if (dpcm_selectable &&
458 ((of_get_child_count(codec_port) > 1) ||
459 adata.convert_rate || adata.convert_channels))
460 ret = func_dpcm(priv, cpu_ep, codec_ep, li,
461 (codec_port_old == codec_port));
462 /* else normal sound */
463 else
464 ret = func_noml(priv, cpu_ep, codec_ep, li);
465
466 of_node_put(codec_ep);
467 of_node_put(codec_port);
468
469 if (ret < 0) {
470 of_node_put(cpu_ep);
471 return ret;
472 }
473
474 codec_port_old = codec_port;
475 }
476 }
477
478 return 0;
479 }
480
graph_parse_of(struct asoc_simple_priv * priv)481 static int graph_parse_of(struct asoc_simple_priv *priv)
482 {
483 struct snd_soc_card *card = simple_priv_to_card(priv);
484 struct link_info li;
485 int ret;
486
487 ret = asoc_simple_parse_widgets(card, NULL);
488 if (ret < 0)
489 return ret;
490
491 ret = asoc_simple_parse_routing(card, NULL);
492 if (ret < 0)
493 return ret;
494
495 memset(&li, 0, sizeof(li));
496 for (li.cpu = 1; li.cpu >= 0; li.cpu--) {
497 /*
498 * Detect all CPU first, and Detect all Codec 2nd.
499 *
500 * In Normal sound case, all DAIs are detected
501 * as "CPU-Codec".
502 *
503 * In DPCM sound case,
504 * all CPUs are detected as "CPU-dummy", and
505 * all Codecs are detected as "dummy-Codec".
506 * To avoid random sub-device numbering,
507 * detect "dummy-Codec" in last;
508 */
509 ret = graph_for_each_link(priv, &li,
510 graph_dai_link_of,
511 graph_dai_link_of_dpcm);
512 if (ret < 0)
513 return ret;
514 }
515
516 return asoc_simple_parse_card_name(card, NULL);
517 }
518
graph_count_noml(struct asoc_simple_priv * priv,struct device_node * cpu_ep,struct device_node * codec_ep,struct link_info * li)519 static int graph_count_noml(struct asoc_simple_priv *priv,
520 struct device_node *cpu_ep,
521 struct device_node *codec_ep,
522 struct link_info *li)
523 {
524 struct device *dev = simple_priv_to_dev(priv);
525
526 li->link += 1; /* 1xCPU-Codec */
527 li->dais += 2; /* 1xCPU + 1xCodec */
528
529 dev_dbg(dev, "Count As Normal\n");
530
531 return 0;
532 }
533
graph_count_dpcm(struct asoc_simple_priv * priv,struct device_node * cpu_ep,struct device_node * codec_ep,struct link_info * li,int dup_codec)534 static int graph_count_dpcm(struct asoc_simple_priv *priv,
535 struct device_node *cpu_ep,
536 struct device_node *codec_ep,
537 struct link_info *li,
538 int dup_codec)
539 {
540 struct device *dev = simple_priv_to_dev(priv);
541
542 li->link++; /* 1xCPU-dummy */
543 li->dais++; /* 1xCPU */
544
545 if (!dup_codec) {
546 li->link++; /* 1xdummy-Codec */
547 li->conf++; /* 1xdummy-Codec */
548 li->dais++; /* 1xCodec */
549 }
550
551 dev_dbg(dev, "Count As DPCM\n");
552
553 return 0;
554 }
555
graph_get_dais_count(struct asoc_simple_priv * priv,struct link_info * li)556 static void graph_get_dais_count(struct asoc_simple_priv *priv,
557 struct link_info *li)
558 {
559 struct device *dev = simple_priv_to_dev(priv);
560
561 /*
562 * link_num : number of links.
563 * CPU-Codec / CPU-dummy / dummy-Codec
564 * dais_num : number of DAIs
565 * ccnf_num : number of codec_conf
566 * same number for "dummy-Codec"
567 *
568 * ex1)
569 * CPU0 --- Codec0 link : 5
570 * CPU1 --- Codec1 dais : 7
571 * CPU2 -/ ccnf : 1
572 * CPU3 --- Codec2
573 *
574 * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec
575 * => 7 DAIs = 4xCPU + 3xCodec
576 * => 1 ccnf = 1xdummy-Codec
577 *
578 * ex2)
579 * CPU0 --- Codec0 link : 5
580 * CPU1 --- Codec1 dais : 6
581 * CPU2 -/ ccnf : 1
582 * CPU3 -/
583 *
584 * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec
585 * => 6 DAIs = 4xCPU + 2xCodec
586 * => 1 ccnf = 1xdummy-Codec
587 *
588 * ex3)
589 * CPU0 --- Codec0 link : 6
590 * CPU1 -/ dais : 6
591 * CPU2 --- Codec1 ccnf : 2
592 * CPU3 -/
593 *
594 * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec
595 * => 6 DAIs = 4xCPU + 2xCodec
596 * => 2 ccnf = 2xdummy-Codec
597 *
598 * ex4)
599 * CPU0 --- Codec0 (convert-rate) link : 3
600 * CPU1 --- Codec1 dais : 4
601 * ccnf : 1
602 *
603 * => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec
604 * => 4 DAIs = 2xCPU + 2xCodec
605 * => 1 ccnf = 1xdummy-Codec
606 */
607 graph_for_each_link(priv, li,
608 graph_count_noml,
609 graph_count_dpcm);
610 dev_dbg(dev, "link %d, dais %d, ccnf %d\n",
611 li->link, li->dais, li->conf);
612 }
613
graph_card_probe(struct snd_soc_card * card)614 static int graph_card_probe(struct snd_soc_card *card)
615 {
616 struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card);
617 int ret;
618
619 ret = asoc_simple_init_hp(card, &priv->hp_jack, NULL);
620 if (ret < 0)
621 return ret;
622
623 ret = asoc_simple_init_mic(card, &priv->mic_jack, NULL);
624 if (ret < 0)
625 return ret;
626
627 return 0;
628 }
629
graph_probe(struct platform_device * pdev)630 static int graph_probe(struct platform_device *pdev)
631 {
632 struct asoc_simple_priv *priv;
633 struct device *dev = &pdev->dev;
634 struct snd_soc_card *card;
635 struct link_info li;
636 int ret;
637
638 /* Allocate the private data and the DAI link array */
639 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
640 if (!priv)
641 return -ENOMEM;
642
643 card = simple_priv_to_card(priv);
644 card->owner = THIS_MODULE;
645 card->dev = dev;
646 card->dapm_widgets = graph_dapm_widgets;
647 card->num_dapm_widgets = ARRAY_SIZE(graph_dapm_widgets);
648 card->probe = graph_card_probe;
649
650 memset(&li, 0, sizeof(li));
651 graph_get_dais_count(priv, &li);
652 if (!li.link || !li.dais)
653 return -EINVAL;
654
655 ret = asoc_simple_init_priv(priv, &li);
656 if (ret < 0)
657 return ret;
658
659 priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW);
660 if (IS_ERR(priv->pa_gpio)) {
661 ret = PTR_ERR(priv->pa_gpio);
662 dev_err(dev, "failed to get amplifier gpio: %d\n", ret);
663 return ret;
664 }
665
666 ret = graph_parse_of(priv);
667 if (ret < 0) {
668 if (ret != -EPROBE_DEFER)
669 dev_err(dev, "parse error %d\n", ret);
670 goto err;
671 }
672
673 snd_soc_card_set_drvdata(card, priv);
674
675 asoc_simple_debug_info(priv);
676
677 ret = devm_snd_soc_register_card(dev, card);
678 if (ret < 0)
679 goto err;
680
681 return 0;
682 err:
683 asoc_simple_clean_reference(card);
684
685 return ret;
686 }
687
graph_remove(struct platform_device * pdev)688 static int graph_remove(struct platform_device *pdev)
689 {
690 struct snd_soc_card *card = platform_get_drvdata(pdev);
691
692 return asoc_simple_clean_reference(card);
693 }
694
695 static const struct of_device_id graph_of_match[] = {
696 { .compatible = "audio-graph-card", },
697 { .compatible = "audio-graph-scu-card",
698 .data = (void *)DPCM_SELECTABLE },
699 {},
700 };
701 MODULE_DEVICE_TABLE(of, graph_of_match);
702
703 static struct platform_driver graph_card = {
704 .driver = {
705 .name = "asoc-audio-graph-card",
706 .pm = &snd_soc_pm_ops,
707 .of_match_table = graph_of_match,
708 },
709 .probe = graph_probe,
710 .remove = graph_remove,
711 };
712 module_platform_driver(graph_card);
713
714 MODULE_ALIAS("platform:asoc-audio-graph-card");
715 MODULE_LICENSE("GPL v2");
716 MODULE_DESCRIPTION("ASoC Audio Graph Sound Card");
717 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
718