1 /*
2 * ASoC simple sound card support
3 *
4 * Copyright (C) 2012 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11 #include <linux/clk.h>
12 #include <linux/device.h>
13 #include <linux/gpio.h>
14 #include <linux/module.h>
15 #include <linux/of.h>
16 #include <linux/of_gpio.h>
17 #include <linux/platform_device.h>
18 #include <linux/string.h>
19 #include <sound/jack.h>
20 #include <sound/simple_card.h>
21 #include <sound/soc-dai.h>
22 #include <sound/soc.h>
23
24 struct simple_card_data {
25 struct snd_soc_card snd_card;
26 struct simple_dai_props {
27 struct asoc_simple_dai cpu_dai;
28 struct asoc_simple_dai codec_dai;
29 unsigned int mclk_fs;
30 } *dai_props;
31 unsigned int mclk_fs;
32 int gpio_hp_det;
33 int gpio_hp_det_invert;
34 int gpio_mic_det;
35 int gpio_mic_det_invert;
36 struct snd_soc_dai_link dai_link[]; /* dynamically allocated */
37 };
38
39 #define simple_priv_to_dev(priv) ((priv)->snd_card.dev)
40 #define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + i)
41 #define simple_priv_to_props(priv, i) ((priv)->dai_props + i)
42
asoc_simple_card_startup(struct snd_pcm_substream * substream)43 static int asoc_simple_card_startup(struct snd_pcm_substream *substream)
44 {
45 struct snd_soc_pcm_runtime *rtd = substream->private_data;
46 struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
47 struct simple_dai_props *dai_props =
48 &priv->dai_props[rtd - rtd->card->rtd];
49 int ret;
50
51 ret = clk_prepare_enable(dai_props->cpu_dai.clk);
52 if (ret)
53 return ret;
54
55 ret = clk_prepare_enable(dai_props->codec_dai.clk);
56 if (ret)
57 clk_disable_unprepare(dai_props->cpu_dai.clk);
58
59 return ret;
60 }
61
asoc_simple_card_shutdown(struct snd_pcm_substream * substream)62 static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream)
63 {
64 struct snd_soc_pcm_runtime *rtd = substream->private_data;
65 struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
66 struct simple_dai_props *dai_props =
67 &priv->dai_props[rtd - rtd->card->rtd];
68
69 clk_disable_unprepare(dai_props->cpu_dai.clk);
70
71 clk_disable_unprepare(dai_props->codec_dai.clk);
72 }
73
asoc_simple_card_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)74 static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
75 struct snd_pcm_hw_params *params)
76 {
77 struct snd_soc_pcm_runtime *rtd = substream->private_data;
78 struct snd_soc_dai *codec_dai = rtd->codec_dai;
79 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
80 struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
81 struct simple_dai_props *dai_props =
82 &priv->dai_props[rtd - rtd->card->rtd];
83 unsigned int mclk, mclk_fs = 0;
84 int ret = 0;
85
86 if (priv->mclk_fs)
87 mclk_fs = priv->mclk_fs;
88 else if (dai_props->mclk_fs)
89 mclk_fs = dai_props->mclk_fs;
90
91 if (mclk_fs) {
92 mclk = params_rate(params) * mclk_fs;
93 ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
94 SND_SOC_CLOCK_IN);
95 if (ret && ret != -ENOTSUPP)
96 goto err;
97
98 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
99 SND_SOC_CLOCK_OUT);
100 if (ret && ret != -ENOTSUPP)
101 goto err;
102 }
103 return 0;
104 err:
105 return ret;
106 }
107
108 static struct snd_soc_ops asoc_simple_card_ops = {
109 .startup = asoc_simple_card_startup,
110 .shutdown = asoc_simple_card_shutdown,
111 .hw_params = asoc_simple_card_hw_params,
112 };
113
114 static struct snd_soc_jack simple_card_hp_jack;
115 static struct snd_soc_jack_pin simple_card_hp_jack_pins[] = {
116 {
117 .pin = "Headphones",
118 .mask = SND_JACK_HEADPHONE,
119 },
120 };
121 static struct snd_soc_jack_gpio simple_card_hp_jack_gpio = {
122 .name = "Headphone detection",
123 .report = SND_JACK_HEADPHONE,
124 .debounce_time = 150,
125 };
126
127 static struct snd_soc_jack simple_card_mic_jack;
128 static struct snd_soc_jack_pin simple_card_mic_jack_pins[] = {
129 {
130 .pin = "Mic Jack",
131 .mask = SND_JACK_MICROPHONE,
132 },
133 };
134 static struct snd_soc_jack_gpio simple_card_mic_jack_gpio = {
135 .name = "Mic detection",
136 .report = SND_JACK_MICROPHONE,
137 .debounce_time = 150,
138 };
139
__asoc_simple_card_dai_init(struct snd_soc_dai * dai,struct asoc_simple_dai * set)140 static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
141 struct asoc_simple_dai *set)
142 {
143 int ret;
144
145 if (set->sysclk) {
146 ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
147 if (ret && ret != -ENOTSUPP) {
148 dev_err(dai->dev, "simple-card: set_sysclk error\n");
149 goto err;
150 }
151 }
152
153 if (set->slots) {
154 ret = snd_soc_dai_set_tdm_slot(dai,
155 set->tx_slot_mask,
156 set->rx_slot_mask,
157 set->slots,
158 set->slot_width);
159 if (ret && ret != -ENOTSUPP) {
160 dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
161 goto err;
162 }
163 }
164
165 ret = 0;
166
167 err:
168 return ret;
169 }
170
asoc_simple_card_dai_init(struct snd_soc_pcm_runtime * rtd)171 static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
172 {
173 struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
174 struct snd_soc_dai *codec = rtd->codec_dai;
175 struct snd_soc_dai *cpu = rtd->cpu_dai;
176 struct simple_dai_props *dai_props;
177 int num, ret;
178
179 num = rtd - rtd->card->rtd;
180 dai_props = &priv->dai_props[num];
181 ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai);
182 if (ret < 0)
183 return ret;
184
185 ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai);
186 if (ret < 0)
187 return ret;
188
189 if (gpio_is_valid(priv->gpio_hp_det)) {
190 snd_soc_card_jack_new(rtd->card, "Headphones",
191 SND_JACK_HEADPHONE,
192 &simple_card_hp_jack,
193 simple_card_hp_jack_pins,
194 ARRAY_SIZE(simple_card_hp_jack_pins));
195
196 simple_card_hp_jack_gpio.gpio = priv->gpio_hp_det;
197 simple_card_hp_jack_gpio.invert = priv->gpio_hp_det_invert;
198 snd_soc_jack_add_gpios(&simple_card_hp_jack, 1,
199 &simple_card_hp_jack_gpio);
200 }
201
202 if (gpio_is_valid(priv->gpio_mic_det)) {
203 snd_soc_card_jack_new(rtd->card, "Mic Jack",
204 SND_JACK_MICROPHONE,
205 &simple_card_mic_jack,
206 simple_card_mic_jack_pins,
207 ARRAY_SIZE(simple_card_mic_jack_pins));
208 simple_card_mic_jack_gpio.gpio = priv->gpio_mic_det;
209 simple_card_mic_jack_gpio.invert = priv->gpio_mic_det_invert;
210 snd_soc_jack_add_gpios(&simple_card_mic_jack, 1,
211 &simple_card_mic_jack_gpio);
212 }
213 return 0;
214 }
215
216 static int
asoc_simple_card_sub_parse_of(struct device_node * np,struct asoc_simple_dai * dai,struct device_node ** p_node,const char ** name,int * args_count)217 asoc_simple_card_sub_parse_of(struct device_node *np,
218 struct asoc_simple_dai *dai,
219 struct device_node **p_node,
220 const char **name,
221 int *args_count)
222 {
223 struct of_phandle_args args;
224 struct clk *clk;
225 u32 val;
226 int ret;
227
228 /*
229 * Get node via "sound-dai = <&phandle port>"
230 * it will be used as xxx_of_node on soc_bind_dai_link()
231 */
232 ret = of_parse_phandle_with_args(np, "sound-dai",
233 "#sound-dai-cells", 0, &args);
234 if (ret)
235 return ret;
236
237 *p_node = args.np;
238
239 if (args_count)
240 *args_count = args.args_count;
241
242 /* Get dai->name */
243 ret = snd_soc_of_get_dai_name(np, name);
244 if (ret < 0)
245 return ret;
246
247 /* Parse TDM slot */
248 ret = snd_soc_of_parse_tdm_slot(np, &dai->tx_slot_mask,
249 &dai->rx_slot_mask,
250 &dai->slots, &dai->slot_width);
251 if (ret)
252 return ret;
253
254 /*
255 * Parse dai->sysclk come from "clocks = <&xxx>"
256 * (if system has common clock)
257 * or "system-clock-frequency = <xxx>"
258 * or device's module clock.
259 */
260 if (of_property_read_bool(np, "clocks")) {
261 clk = of_clk_get(np, 0);
262 if (IS_ERR(clk)) {
263 ret = PTR_ERR(clk);
264 return ret;
265 }
266
267 dai->sysclk = clk_get_rate(clk);
268 dai->clk = clk;
269 } else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
270 dai->sysclk = val;
271 } else {
272 clk = of_clk_get(args.np, 0);
273 if (!IS_ERR(clk))
274 dai->sysclk = clk_get_rate(clk);
275 }
276
277 return 0;
278 }
279
asoc_simple_card_parse_daifmt(struct device_node * node,struct simple_card_data * priv,struct device_node * codec,char * prefix,int idx)280 static int asoc_simple_card_parse_daifmt(struct device_node *node,
281 struct simple_card_data *priv,
282 struct device_node *codec,
283 char *prefix, int idx)
284 {
285 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
286 struct device *dev = simple_priv_to_dev(priv);
287 struct device_node *bitclkmaster = NULL;
288 struct device_node *framemaster = NULL;
289 unsigned int daifmt;
290
291 daifmt = snd_soc_of_parse_daifmt(node, prefix,
292 &bitclkmaster, &framemaster);
293 daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
294
295 if (strlen(prefix) && !bitclkmaster && !framemaster) {
296 /*
297 * No dai-link level and master setting was not found from
298 * sound node level, revert back to legacy DT parsing and
299 * take the settings from codec node.
300 */
301 dev_dbg(dev, "Revert to legacy daifmt parsing\n");
302
303 daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
304 (daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
305 } else {
306 if (codec == bitclkmaster)
307 daifmt |= (codec == framemaster) ?
308 SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
309 else
310 daifmt |= (codec == framemaster) ?
311 SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
312 }
313
314 dai_link->dai_fmt = daifmt;
315
316 of_node_put(bitclkmaster);
317 of_node_put(framemaster);
318
319 return 0;
320 }
321
asoc_simple_card_dai_link_of(struct device_node * node,struct simple_card_data * priv,int idx,bool is_top_level_node)322 static int asoc_simple_card_dai_link_of(struct device_node *node,
323 struct simple_card_data *priv,
324 int idx,
325 bool is_top_level_node)
326 {
327 struct device *dev = simple_priv_to_dev(priv);
328 struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
329 struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
330 struct device_node *cpu = NULL;
331 struct device_node *plat = NULL;
332 struct device_node *codec = NULL;
333 char *name;
334 char prop[128];
335 char *prefix = "";
336 int ret, cpu_args;
337 u32 val;
338
339 /* For single DAI link & old style of DT node */
340 if (is_top_level_node)
341 prefix = "simple-audio-card,";
342
343 snprintf(prop, sizeof(prop), "%scpu", prefix);
344 cpu = of_get_child_by_name(node, prop);
345
346 if (!cpu) {
347 ret = -EINVAL;
348 dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
349 goto dai_link_of_err;
350 }
351
352 snprintf(prop, sizeof(prop), "%splat", prefix);
353 plat = of_get_child_by_name(node, prop);
354
355 snprintf(prop, sizeof(prop), "%scodec", prefix);
356 codec = of_get_child_by_name(node, prop);
357
358 if (!codec) {
359 ret = -EINVAL;
360 dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
361 goto dai_link_of_err;
362 }
363
364 ret = asoc_simple_card_parse_daifmt(node, priv,
365 codec, prefix, idx);
366 if (ret < 0)
367 goto dai_link_of_err;
368
369 if (!of_property_read_u32(node, "mclk-fs", &val))
370 dai_props->mclk_fs = val;
371
372 ret = asoc_simple_card_sub_parse_of(cpu, &dai_props->cpu_dai,
373 &dai_link->cpu_of_node,
374 &dai_link->cpu_dai_name,
375 &cpu_args);
376 if (ret < 0)
377 goto dai_link_of_err;
378
379 ret = asoc_simple_card_sub_parse_of(codec, &dai_props->codec_dai,
380 &dai_link->codec_of_node,
381 &dai_link->codec_dai_name, NULL);
382 if (ret < 0)
383 goto dai_link_of_err;
384
385 if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
386 ret = -EINVAL;
387 goto dai_link_of_err;
388 }
389
390 if (plat) {
391 struct of_phandle_args args;
392
393 ret = of_parse_phandle_with_args(plat, "sound-dai",
394 "#sound-dai-cells", 0, &args);
395 dai_link->platform_of_node = args.np;
396 } else {
397 /* Assumes platform == cpu */
398 dai_link->platform_of_node = dai_link->cpu_of_node;
399 }
400
401 /* DAI link name is created from CPU/CODEC dai name */
402 name = devm_kzalloc(dev,
403 strlen(dai_link->cpu_dai_name) +
404 strlen(dai_link->codec_dai_name) + 2,
405 GFP_KERNEL);
406 if (!name) {
407 ret = -ENOMEM;
408 goto dai_link_of_err;
409 }
410
411 sprintf(name, "%s-%s", dai_link->cpu_dai_name,
412 dai_link->codec_dai_name);
413 dai_link->name = dai_link->stream_name = name;
414 dai_link->ops = &asoc_simple_card_ops;
415 dai_link->init = asoc_simple_card_dai_init;
416
417 dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
418 dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt);
419 dev_dbg(dev, "\tcpu : %s / %d\n",
420 dai_link->cpu_dai_name,
421 dai_props->cpu_dai.sysclk);
422 dev_dbg(dev, "\tcodec : %s / %d\n",
423 dai_link->codec_dai_name,
424 dai_props->codec_dai.sysclk);
425
426 /*
427 * In soc_bind_dai_link() will check cpu name after
428 * of_node matching if dai_link has cpu_dai_name.
429 * but, it will never match if name was created by
430 * fmt_single_name() remove cpu_dai_name if cpu_args
431 * was 0. See:
432 * fmt_single_name()
433 * fmt_multiple_name()
434 */
435 if (!cpu_args)
436 dai_link->cpu_dai_name = NULL;
437
438 dai_link_of_err:
439 of_node_put(cpu);
440 of_node_put(codec);
441
442 return ret;
443 }
444
asoc_simple_card_parse_of(struct device_node * node,struct simple_card_data * priv)445 static int asoc_simple_card_parse_of(struct device_node *node,
446 struct simple_card_data *priv)
447 {
448 struct device *dev = simple_priv_to_dev(priv);
449 enum of_gpio_flags flags;
450 u32 val;
451 int ret;
452
453 if (!node)
454 return -EINVAL;
455
456 /* Parse the card name from DT */
457 snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name");
458
459 /* The off-codec widgets */
460 if (of_property_read_bool(node, "simple-audio-card,widgets")) {
461 ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
462 "simple-audio-card,widgets");
463 if (ret)
464 return ret;
465 }
466
467 /* DAPM routes */
468 if (of_property_read_bool(node, "simple-audio-card,routing")) {
469 ret = snd_soc_of_parse_audio_routing(&priv->snd_card,
470 "simple-audio-card,routing");
471 if (ret)
472 return ret;
473 }
474
475 /* Factor to mclk, used in hw_params() */
476 ret = of_property_read_u32(node, "simple-audio-card,mclk-fs", &val);
477 if (ret == 0)
478 priv->mclk_fs = val;
479
480 dev_dbg(dev, "New simple-card: %s\n", priv->snd_card.name ?
481 priv->snd_card.name : "");
482
483 /* Single/Muti DAI link(s) & New style of DT node */
484 if (of_get_child_by_name(node, "simple-audio-card,dai-link")) {
485 struct device_node *np = NULL;
486 int i = 0;
487
488 for_each_child_of_node(node, np) {
489 dev_dbg(dev, "\tlink %d:\n", i);
490 ret = asoc_simple_card_dai_link_of(np, priv,
491 i, false);
492 if (ret < 0) {
493 of_node_put(np);
494 return ret;
495 }
496 i++;
497 }
498 } else {
499 /* For single DAI link & old style of DT node */
500 ret = asoc_simple_card_dai_link_of(node, priv, 0, true);
501 if (ret < 0)
502 return ret;
503 }
504
505 priv->gpio_hp_det = of_get_named_gpio_flags(node,
506 "simple-audio-card,hp-det-gpio", 0, &flags);
507 priv->gpio_hp_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW);
508 if (priv->gpio_hp_det == -EPROBE_DEFER)
509 return -EPROBE_DEFER;
510
511 priv->gpio_mic_det = of_get_named_gpio_flags(node,
512 "simple-audio-card,mic-det-gpio", 0, &flags);
513 priv->gpio_mic_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW);
514 if (priv->gpio_mic_det == -EPROBE_DEFER)
515 return -EPROBE_DEFER;
516
517 if (!priv->snd_card.name)
518 priv->snd_card.name = priv->snd_card.dai_link->name;
519
520 return 0;
521 }
522
523 /* Decrease the reference count of the device nodes */
asoc_simple_card_unref(struct snd_soc_card * card)524 static int asoc_simple_card_unref(struct snd_soc_card *card)
525 {
526 struct snd_soc_dai_link *dai_link;
527 int num_links;
528
529 for (num_links = 0, dai_link = card->dai_link;
530 num_links < card->num_links;
531 num_links++, dai_link++) {
532 of_node_put(dai_link->cpu_of_node);
533 of_node_put(dai_link->codec_of_node);
534 }
535 return 0;
536 }
537
asoc_simple_card_probe(struct platform_device * pdev)538 static int asoc_simple_card_probe(struct platform_device *pdev)
539 {
540 struct simple_card_data *priv;
541 struct snd_soc_dai_link *dai_link;
542 struct device_node *np = pdev->dev.of_node;
543 struct device *dev = &pdev->dev;
544 int num_links, ret;
545
546 /* Get the number of DAI links */
547 if (np && of_get_child_by_name(np, "simple-audio-card,dai-link"))
548 num_links = of_get_child_count(np);
549 else
550 num_links = 1;
551
552 /* Allocate the private data and the DAI link array */
553 priv = devm_kzalloc(dev,
554 sizeof(*priv) + sizeof(*dai_link) * num_links,
555 GFP_KERNEL);
556 if (!priv)
557 return -ENOMEM;
558
559 /* Init snd_soc_card */
560 priv->snd_card.owner = THIS_MODULE;
561 priv->snd_card.dev = dev;
562 dai_link = priv->dai_link;
563 priv->snd_card.dai_link = dai_link;
564 priv->snd_card.num_links = num_links;
565
566 priv->gpio_hp_det = -ENOENT;
567 priv->gpio_mic_det = -ENOENT;
568
569 /* Get room for the other properties */
570 priv->dai_props = devm_kzalloc(dev,
571 sizeof(*priv->dai_props) * num_links,
572 GFP_KERNEL);
573 if (!priv->dai_props)
574 return -ENOMEM;
575
576 if (np && of_device_is_available(np)) {
577
578 ret = asoc_simple_card_parse_of(np, priv);
579 if (ret < 0) {
580 if (ret != -EPROBE_DEFER)
581 dev_err(dev, "parse error %d\n", ret);
582 goto err;
583 }
584
585 } else {
586 struct asoc_simple_card_info *cinfo;
587
588 cinfo = dev->platform_data;
589 if (!cinfo) {
590 dev_err(dev, "no info for asoc-simple-card\n");
591 return -EINVAL;
592 }
593
594 if (!cinfo->name ||
595 !cinfo->codec_dai.name ||
596 !cinfo->codec ||
597 !cinfo->platform ||
598 !cinfo->cpu_dai.name) {
599 dev_err(dev, "insufficient asoc_simple_card_info settings\n");
600 return -EINVAL;
601 }
602
603 priv->snd_card.name = (cinfo->card) ? cinfo->card : cinfo->name;
604 dai_link->name = cinfo->name;
605 dai_link->stream_name = cinfo->name;
606 dai_link->platform_name = cinfo->platform;
607 dai_link->codec_name = cinfo->codec;
608 dai_link->cpu_dai_name = cinfo->cpu_dai.name;
609 dai_link->codec_dai_name = cinfo->codec_dai.name;
610 dai_link->dai_fmt = cinfo->daifmt;
611 dai_link->init = asoc_simple_card_dai_init;
612 memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
613 sizeof(priv->dai_props->cpu_dai));
614 memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai,
615 sizeof(priv->dai_props->codec_dai));
616
617 }
618
619 snd_soc_card_set_drvdata(&priv->snd_card, priv);
620
621 ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card);
622 if (ret >= 0)
623 return ret;
624
625 err:
626 asoc_simple_card_unref(&priv->snd_card);
627 return ret;
628 }
629
asoc_simple_card_remove(struct platform_device * pdev)630 static int asoc_simple_card_remove(struct platform_device *pdev)
631 {
632 struct snd_soc_card *card = platform_get_drvdata(pdev);
633 struct simple_card_data *priv = snd_soc_card_get_drvdata(card);
634
635 if (gpio_is_valid(priv->gpio_hp_det))
636 snd_soc_jack_free_gpios(&simple_card_hp_jack, 1,
637 &simple_card_hp_jack_gpio);
638 if (gpio_is_valid(priv->gpio_mic_det))
639 snd_soc_jack_free_gpios(&simple_card_mic_jack, 1,
640 &simple_card_mic_jack_gpio);
641
642 return asoc_simple_card_unref(card);
643 }
644
645 static const struct of_device_id asoc_simple_of_match[] = {
646 { .compatible = "simple-audio-card", },
647 {},
648 };
649 MODULE_DEVICE_TABLE(of, asoc_simple_of_match);
650
651 static struct platform_driver asoc_simple_card = {
652 .driver = {
653 .name = "asoc-simple-card",
654 .of_match_table = asoc_simple_of_match,
655 },
656 .probe = asoc_simple_card_probe,
657 .remove = asoc_simple_card_remove,
658 };
659
660 module_platform_driver(asoc_simple_card);
661
662 MODULE_ALIAS("platform:asoc-simple-card");
663 MODULE_LICENSE("GPL");
664 MODULE_DESCRIPTION("ASoC Simple Sound Card");
665 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
666