Version:  2.0.40 2.2.26 2.4.37 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 4.3 4.4 4.5 4.6 4.7

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

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