Version:  2.0.40 2.2.26 2.4.37 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2

Linux/sound/soc/generic/simple-card.c

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

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