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1536a968 KM |
1 | /* |
2 | * Renesas R-Car SRU/SCU/SSIU/SSI support | |
3 | * | |
4 | * Copyright (C) 2013 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * Based on fsi.c | |
8 | * Kuninori Morimoto <morimoto.kuninori@renesas.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
14 | ||
15 | /* | |
16 | * Renesas R-Car sound device structure | |
17 | * | |
18 | * Gen1 | |
19 | * | |
20 | * SRU : Sound Routing Unit | |
21 | * - SRC : Sampling Rate Converter | |
22 | * - CMD | |
23 | * - CTU : Channel Count Conversion Unit | |
24 | * - MIX : Mixer | |
25 | * - DVC : Digital Volume and Mute Function | |
26 | * - SSI : Serial Sound Interface | |
27 | * | |
28 | * Gen2 | |
29 | * | |
30 | * SCU : Sampling Rate Converter Unit | |
31 | * - SRC : Sampling Rate Converter | |
32 | * - CMD | |
33 | * - CTU : Channel Count Conversion Unit | |
34 | * - MIX : Mixer | |
35 | * - DVC : Digital Volume and Mute Function | |
36 | * SSIU : Serial Sound Interface Unit | |
37 | * - SSI : Serial Sound Interface | |
38 | */ | |
39 | ||
40 | /* | |
41 | * driver data Image | |
42 | * | |
43 | * rsnd_priv | |
44 | * | | |
45 | * | ** this depends on Gen1/Gen2 | |
46 | * | | |
47 | * +- gen | |
48 | * | | |
49 | * | ** these depend on data path | |
50 | * | ** gen and platform data control it | |
51 | * | | |
52 | * +- rdai[0] | |
53 | * | | sru ssiu ssi | |
54 | * | +- playback -> [mod] -> [mod] -> [mod] -> ... | |
55 | * | | | |
56 | * | | sru ssiu ssi | |
57 | * | +- capture -> [mod] -> [mod] -> [mod] -> ... | |
58 | * | | |
59 | * +- rdai[1] | |
60 | * | | sru ssiu ssi | |
61 | * | +- playback -> [mod] -> [mod] -> [mod] -> ... | |
62 | * | | | |
63 | * | | sru ssiu ssi | |
64 | * | +- capture -> [mod] -> [mod] -> [mod] -> ... | |
65 | * ... | |
66 | * | | |
67 | * | ** these control ssi | |
68 | * | | |
69 | * +- ssi | |
70 | * | | | |
71 | * | +- ssi[0] | |
72 | * | +- ssi[1] | |
73 | * | +- ssi[2] | |
74 | * | ... | |
75 | * | | |
ba9c949f | 76 | * | ** these control src |
1536a968 | 77 | * | |
ba9c949f | 78 | * +- src |
1536a968 | 79 | * | |
ba9c949f KM |
80 | * +- src[0] |
81 | * +- src[1] | |
82 | * +- src[2] | |
1536a968 KM |
83 | * ... |
84 | * | |
85 | * | |
86 | * for_each_rsnd_dai(xx, priv, xx) | |
87 | * rdai[0] => rdai[1] => rdai[2] => ... | |
88 | * | |
89 | * for_each_rsnd_mod(xx, rdai, xx) | |
90 | * [mod] => [mod] => [mod] => ... | |
91 | * | |
92 | * rsnd_dai_call(xxx, fn ) | |
93 | * [mod]->fn() -> [mod]->fn() -> [mod]->fn()... | |
94 | * | |
95 | */ | |
96 | #include <linux/pm_runtime.h> | |
9ade09d6 | 97 | #include <linux/shdma-base.h> |
1536a968 KM |
98 | #include "rsnd.h" |
99 | ||
100 | #define RSND_RATES SNDRV_PCM_RATE_8000_96000 | |
101 | #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE) | |
102 | ||
90e8e50f KM |
103 | static struct rsnd_of_data rsnd_of_data_gen1 = { |
104 | .flags = RSND_GEN1, | |
105 | }; | |
106 | ||
107 | static struct rsnd_of_data rsnd_of_data_gen2 = { | |
108 | .flags = RSND_GEN2, | |
109 | }; | |
110 | ||
111 | static struct of_device_id rsnd_of_match[] = { | |
112 | { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 }, | |
113 | { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 }, | |
114 | {}, | |
115 | }; | |
116 | MODULE_DEVICE_TABLE(of, rsnd_of_match); | |
117 | ||
1536a968 KM |
118 | /* |
119 | * rsnd_platform functions | |
120 | */ | |
121 | #define rsnd_platform_call(priv, dai, func, param...) \ | |
740ad6c3 | 122 | (!(priv->info->func) ? 0 : \ |
1536a968 KM |
123 | priv->info->func(param)) |
124 | ||
389933d9 KM |
125 | #define rsnd_is_enable_path(io, name) \ |
126 | ((io)->info ? (io)->info->name : NULL) | |
127 | #define rsnd_info_id(priv, io, name) \ | |
128 | ((io)->info->name - priv->info->name##_info) | |
129 | ||
cdaa3cdf KM |
130 | /* |
131 | * rsnd_mod functions | |
132 | */ | |
133 | char *rsnd_mod_name(struct rsnd_mod *mod) | |
134 | { | |
135 | if (!mod || !mod->ops) | |
136 | return "unknown"; | |
137 | ||
138 | return mod->ops->name; | |
139 | } | |
140 | ||
141 | void rsnd_mod_init(struct rsnd_priv *priv, | |
142 | struct rsnd_mod *mod, | |
143 | struct rsnd_mod_ops *ops, | |
a126021d | 144 | enum rsnd_mod_type type, |
cdaa3cdf KM |
145 | int id) |
146 | { | |
147 | mod->priv = priv; | |
148 | mod->id = id; | |
149 | mod->ops = ops; | |
a126021d | 150 | mod->type = type; |
cdaa3cdf KM |
151 | } |
152 | ||
0a4d94c0 KM |
153 | /* |
154 | * rsnd_dma functions | |
155 | */ | |
f5cab3b8 | 156 | static void __rsnd_dma_start(struct rsnd_dma *dma); |
0a4d94c0 KM |
157 | static void rsnd_dma_continue(struct rsnd_dma *dma) |
158 | { | |
159 | /* push next A or B plane */ | |
160 | dma->submit_loop = 1; | |
161 | schedule_work(&dma->work); | |
162 | } | |
163 | ||
164 | void rsnd_dma_start(struct rsnd_dma *dma) | |
165 | { | |
166 | /* push both A and B plane*/ | |
4686a0ad | 167 | dma->offset = 0; |
0a4d94c0 | 168 | dma->submit_loop = 2; |
f5cab3b8 | 169 | __rsnd_dma_start(dma); |
0a4d94c0 KM |
170 | } |
171 | ||
172 | void rsnd_dma_stop(struct rsnd_dma *dma) | |
173 | { | |
174 | dma->submit_loop = 0; | |
175 | cancel_work_sync(&dma->work); | |
176 | dmaengine_terminate_all(dma->chan); | |
177 | } | |
178 | ||
179 | static void rsnd_dma_complete(void *data) | |
180 | { | |
181 | struct rsnd_dma *dma = (struct rsnd_dma *)data; | |
4686a0ad | 182 | struct rsnd_mod *mod = rsnd_dma_to_mod(dma); |
9b5ab573 | 183 | struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma)); |
4686a0ad | 184 | struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); |
0a4d94c0 KM |
185 | unsigned long flags; |
186 | ||
187 | rsnd_lock(priv, flags); | |
188 | ||
4686a0ad KM |
189 | /* |
190 | * Renesas sound Gen1 needs 1 DMAC, | |
191 | * Gen2 needs 2 DMAC. | |
192 | * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri. | |
193 | * But, Audio-DMAC-peri-peri doesn't have interrupt, | |
194 | * and this driver is assuming that here. | |
195 | * | |
196 | * If Audio-DMAC-peri-peri has interrpt, | |
197 | * rsnd_dai_pointer_update() will be called twice, | |
198 | * ant it will breaks io->byte_pos | |
199 | */ | |
0a4d94c0 KM |
200 | if (dma->submit_loop) |
201 | rsnd_dma_continue(dma); | |
202 | ||
203 | rsnd_unlock(priv, flags); | |
836b31fe KM |
204 | |
205 | rsnd_dai_pointer_update(io, io->byte_per_period); | |
0a4d94c0 KM |
206 | } |
207 | ||
f5cab3b8 | 208 | static void __rsnd_dma_start(struct rsnd_dma *dma) |
0a4d94c0 | 209 | { |
4686a0ad KM |
210 | struct rsnd_mod *mod = rsnd_dma_to_mod(dma); |
211 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
212 | struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); | |
213 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
0a4d94c0 KM |
214 | struct device *dev = rsnd_priv_to_dev(priv); |
215 | struct dma_async_tx_descriptor *desc; | |
216 | dma_addr_t buf; | |
4686a0ad | 217 | size_t len = io->byte_per_period; |
0a4d94c0 KM |
218 | int i; |
219 | ||
220 | for (i = 0; i < dma->submit_loop; i++) { | |
221 | ||
4686a0ad KM |
222 | buf = runtime->dma_addr + |
223 | rsnd_dai_pointer_offset(io, dma->offset + len); | |
224 | dma->offset = len; | |
0a4d94c0 KM |
225 | |
226 | desc = dmaengine_prep_slave_single( | |
227 | dma->chan, buf, len, dma->dir, | |
228 | DMA_PREP_INTERRUPT | DMA_CTRL_ACK); | |
229 | if (!desc) { | |
230 | dev_err(dev, "dmaengine_prep_slave_sg() fail\n"); | |
231 | return; | |
232 | } | |
233 | ||
234 | desc->callback = rsnd_dma_complete; | |
235 | desc->callback_param = dma; | |
236 | ||
237 | if (dmaengine_submit(desc) < 0) { | |
238 | dev_err(dev, "dmaengine_submit() fail\n"); | |
239 | return; | |
240 | } | |
241 | ||
a0d32bca | 242 | dma_async_issue_pending(dma->chan); |
0a4d94c0 | 243 | } |
0a4d94c0 KM |
244 | } |
245 | ||
f5cab3b8 KM |
246 | static void rsnd_dma_do_work(struct work_struct *work) |
247 | { | |
248 | struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work); | |
249 | ||
250 | __rsnd_dma_start(dma); | |
251 | } | |
252 | ||
0a4d94c0 KM |
253 | int rsnd_dma_available(struct rsnd_dma *dma) |
254 | { | |
255 | return !!dma->chan; | |
256 | } | |
257 | ||
199e7688 KM |
258 | #define DMA_NAME_SIZE 16 |
259 | #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */ | |
260 | static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod) | |
261 | { | |
262 | if (mod) | |
263 | return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d", | |
264 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
265 | else | |
266 | return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem"); | |
267 | ||
268 | } | |
269 | ||
270 | static void rsnd_dma_of_name(struct rsnd_dma *dma, | |
271 | int is_play, char *dma_name) | |
272 | { | |
273 | struct rsnd_mod *this = rsnd_dma_to_mod(dma); | |
274 | struct rsnd_dai_stream *io = rsnd_mod_to_io(this); | |
275 | struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io); | |
276 | struct rsnd_mod *src = rsnd_io_to_mod_src(io); | |
277 | struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io); | |
278 | struct rsnd_mod *mod[MOD_MAX]; | |
279 | struct rsnd_mod *src_mod, *dst_mod; | |
280 | int i, index; | |
281 | ||
282 | ||
283 | for (i = 0; i < MOD_MAX; i++) | |
284 | mod[i] = NULL; | |
285 | ||
286 | /* | |
287 | * in play case... | |
288 | * | |
289 | * src -> dst | |
290 | * | |
291 | * mem -> SSI | |
292 | * mem -> SRC -> SSI | |
293 | * mem -> SRC -> DVC -> SSI | |
294 | */ | |
295 | mod[0] = NULL; /* for "mem" */ | |
296 | index = 1; | |
297 | for (i = 1; i < MOD_MAX; i++) { | |
298 | if (!src) { | |
299 | mod[i] = ssi; | |
300 | break; | |
301 | } else if (!dvc) { | |
302 | mod[i] = src; | |
303 | src = NULL; | |
304 | } else { | |
305 | mod[i] = dvc; | |
306 | dvc = NULL; | |
307 | } | |
308 | ||
309 | if (mod[i] == this) | |
310 | index = i; | |
311 | } | |
312 | ||
313 | if (is_play) { | |
314 | src_mod = mod[index - 1]; | |
315 | dst_mod = mod[index]; | |
316 | } else { | |
317 | src_mod = mod[index]; | |
318 | dst_mod = mod[index + 1]; | |
319 | } | |
320 | ||
321 | index = 0; | |
322 | index = _rsnd_dma_of_name(dma_name + index, src_mod); | |
323 | *(dma_name + index++) = '_'; | |
324 | index = _rsnd_dma_of_name(dma_name + index, dst_mod); | |
325 | } | |
326 | ||
0a4d94c0 | 327 | int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, |
4686a0ad | 328 | int is_play, int id) |
0a4d94c0 KM |
329 | { |
330 | struct device *dev = rsnd_priv_to_dev(priv); | |
9ade09d6 | 331 | struct dma_slave_config cfg; |
199e7688 | 332 | char dma_name[DMA_NAME_SIZE]; |
0a4d94c0 | 333 | dma_cap_mask_t mask; |
9ade09d6 | 334 | int ret; |
0a4d94c0 KM |
335 | |
336 | if (dma->chan) { | |
337 | dev_err(dev, "it already has dma channel\n"); | |
338 | return -EIO; | |
339 | } | |
340 | ||
341 | dma_cap_zero(mask); | |
342 | dma_cap_set(DMA_SLAVE, mask); | |
343 | ||
199e7688 KM |
344 | if (dev->of_node) |
345 | rsnd_dma_of_name(dma, is_play, dma_name); | |
346 | else | |
347 | snprintf(dma_name, DMA_NAME_SIZE, | |
348 | is_play ? "tx" : "rx"); | |
349 | ||
350 | dev_dbg(dev, "dma name : %s\n", dma_name); | |
351 | ||
9ade09d6 KM |
352 | dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter, |
353 | (void *)id, dev, | |
199e7688 | 354 | dma_name); |
0a4d94c0 KM |
355 | if (!dma->chan) { |
356 | dev_err(dev, "can't get dma channel\n"); | |
357 | return -EIO; | |
358 | } | |
359 | ||
ad32d0c7 | 360 | rsnd_gen_dma_addr(priv, dma, &cfg, is_play, id); |
9ade09d6 KM |
361 | |
362 | ret = dmaengine_slave_config(dma->chan, &cfg); | |
363 | if (ret < 0) | |
364 | goto rsnd_dma_init_err; | |
365 | ||
0a4d94c0 | 366 | dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE; |
0a4d94c0 KM |
367 | INIT_WORK(&dma->work, rsnd_dma_do_work); |
368 | ||
369 | return 0; | |
9ade09d6 KM |
370 | |
371 | rsnd_dma_init_err: | |
372 | rsnd_dma_quit(priv, dma); | |
373 | ||
374 | return ret; | |
0a4d94c0 KM |
375 | } |
376 | ||
377 | void rsnd_dma_quit(struct rsnd_priv *priv, | |
378 | struct rsnd_dma *dma) | |
379 | { | |
380 | if (dma->chan) | |
381 | dma_release_channel(dma->chan); | |
382 | ||
383 | dma->chan = NULL; | |
384 | } | |
385 | ||
d7bdbc5d KM |
386 | /* |
387 | * settting function | |
388 | */ | |
389 | u32 rsnd_get_adinr(struct rsnd_mod *mod) | |
390 | { | |
391 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
392 | struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); | |
393 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
394 | struct device *dev = rsnd_priv_to_dev(priv); | |
395 | u32 adinr = runtime->channels; | |
396 | ||
397 | switch (runtime->sample_bits) { | |
398 | case 16: | |
399 | adinr |= (8 << 16); | |
400 | break; | |
401 | case 32: | |
402 | adinr |= (0 << 16); | |
403 | break; | |
404 | default: | |
405 | dev_warn(dev, "not supported sample bits\n"); | |
406 | return 0; | |
407 | } | |
408 | ||
409 | return adinr; | |
410 | } | |
411 | ||
1536a968 KM |
412 | /* |
413 | * rsnd_dai functions | |
414 | */ | |
68b6af36 | 415 | #define __rsnd_mod_call(mod, func, rdai...) \ |
d870a91e KM |
416 | ({ \ |
417 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \ | |
418 | struct device *dev = rsnd_priv_to_dev(priv); \ | |
419 | dev_dbg(dev, "%s [%d] %s\n", \ | |
420 | rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \ | |
b42fccf6 | 421 | (mod)->ops->func(mod, rdai); \ |
d870a91e KM |
422 | }) |
423 | ||
68b6af36 | 424 | #define rsnd_mod_call(mod, func, rdai...) \ |
d870a91e KM |
425 | (!(mod) ? -ENODEV : \ |
426 | !((mod)->ops->func) ? 0 : \ | |
68b6af36 | 427 | __rsnd_mod_call(mod, func, rdai)) |
d870a91e | 428 | |
68b6af36 | 429 | #define rsnd_dai_call(fn, io, rdai...) \ |
d870a91e | 430 | ({ \ |
a126021d KM |
431 | struct rsnd_mod *mod; \ |
432 | int ret = 0, i; \ | |
433 | for (i = 0; i < RSND_MOD_MAX; i++) { \ | |
434 | mod = (io)->mod[i]; \ | |
435 | if (!mod) \ | |
436 | continue; \ | |
68b6af36 | 437 | ret = rsnd_mod_call(mod, fn, rdai); \ |
d870a91e KM |
438 | if (ret < 0) \ |
439 | break; \ | |
440 | } \ | |
441 | ret; \ | |
cdaa3cdf KM |
442 | }) |
443 | ||
a126021d | 444 | static int rsnd_dai_connect(struct rsnd_mod *mod, |
9bfed6cf | 445 | struct rsnd_dai_stream *io) |
cdaa3cdf | 446 | { |
6020779b | 447 | if (!mod) |
cdaa3cdf | 448 | return -EIO; |
cdaa3cdf | 449 | |
a126021d | 450 | if (io->mod[mod->type]) { |
6020779b KM |
451 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
452 | struct device *dev = rsnd_priv_to_dev(priv); | |
453 | ||
cdaa3cdf KM |
454 | dev_err(dev, "%s%d is not empty\n", |
455 | rsnd_mod_name(mod), | |
456 | rsnd_mod_id(mod)); | |
457 | return -EIO; | |
458 | } | |
459 | ||
a126021d | 460 | io->mod[mod->type] = mod; |
4686a0ad | 461 | mod->io = io; |
cdaa3cdf KM |
462 | |
463 | return 0; | |
464 | } | |
465 | ||
4b4dab82 KM |
466 | int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai) |
467 | { | |
468 | int id = rdai - priv->rdai; | |
469 | ||
ecba9e72 | 470 | if ((id < 0) || (id >= rsnd_rdai_nr(priv))) |
4b4dab82 KM |
471 | return -EINVAL; |
472 | ||
473 | return id; | |
474 | } | |
475 | ||
1536a968 KM |
476 | struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id) |
477 | { | |
ecba9e72 | 478 | if ((id < 0) || (id >= rsnd_rdai_nr(priv))) |
2192f81c KM |
479 | return NULL; |
480 | ||
1536a968 KM |
481 | return priv->rdai + id; |
482 | } | |
483 | ||
484 | static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai) | |
485 | { | |
486 | struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai); | |
487 | ||
488 | return rsnd_dai_get(priv, dai->id); | |
489 | } | |
490 | ||
491 | int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io) | |
492 | { | |
493 | return &rdai->playback == io; | |
494 | } | |
495 | ||
496 | /* | |
497 | * rsnd_soc_dai functions | |
498 | */ | |
499 | int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional) | |
500 | { | |
501 | struct snd_pcm_substream *substream = io->substream; | |
502 | struct snd_pcm_runtime *runtime = substream->runtime; | |
503 | int pos = io->byte_pos + additional; | |
504 | ||
505 | pos %= (runtime->periods * io->byte_per_period); | |
506 | ||
507 | return pos; | |
508 | } | |
509 | ||
510 | void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte) | |
511 | { | |
512 | io->byte_pos += byte; | |
513 | ||
514 | if (io->byte_pos >= io->next_period_byte) { | |
515 | struct snd_pcm_substream *substream = io->substream; | |
516 | struct snd_pcm_runtime *runtime = substream->runtime; | |
517 | ||
518 | io->period_pos++; | |
519 | io->next_period_byte += io->byte_per_period; | |
520 | ||
521 | if (io->period_pos >= runtime->periods) { | |
522 | io->byte_pos = 0; | |
523 | io->period_pos = 0; | |
524 | io->next_period_byte = io->byte_per_period; | |
525 | } | |
526 | ||
527 | snd_pcm_period_elapsed(substream); | |
528 | } | |
529 | } | |
530 | ||
531 | static int rsnd_dai_stream_init(struct rsnd_dai_stream *io, | |
532 | struct snd_pcm_substream *substream) | |
533 | { | |
534 | struct snd_pcm_runtime *runtime = substream->runtime; | |
535 | ||
1536a968 KM |
536 | io->substream = substream; |
537 | io->byte_pos = 0; | |
538 | io->period_pos = 0; | |
539 | io->byte_per_period = runtime->period_size * | |
540 | runtime->channels * | |
541 | samples_to_bytes(runtime, 1); | |
542 | io->next_period_byte = io->byte_per_period; | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | static | |
548 | struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream) | |
549 | { | |
550 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
551 | ||
552 | return rtd->cpu_dai; | |
553 | } | |
554 | ||
555 | static | |
556 | struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai, | |
557 | struct snd_pcm_substream *substream) | |
558 | { | |
559 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
560 | return &rdai->playback; | |
561 | else | |
562 | return &rdai->capture; | |
563 | } | |
564 | ||
565 | static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd, | |
566 | struct snd_soc_dai *dai) | |
567 | { | |
568 | struct rsnd_priv *priv = snd_soc_dai_get_drvdata(dai); | |
569 | struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); | |
570 | struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); | |
29e69fd2 | 571 | int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io)); |
1536a968 KM |
572 | int ret; |
573 | unsigned long flags; | |
574 | ||
575 | rsnd_lock(priv, flags); | |
576 | ||
577 | switch (cmd) { | |
578 | case SNDRV_PCM_TRIGGER_START: | |
579 | ret = rsnd_dai_stream_init(io, substream); | |
580 | if (ret < 0) | |
581 | goto dai_trigger_end; | |
582 | ||
583 | ret = rsnd_platform_call(priv, dai, start, ssi_id); | |
584 | if (ret < 0) | |
585 | goto dai_trigger_end; | |
586 | ||
68b6af36 | 587 | ret = rsnd_dai_call(init, io, rdai); |
cdaa3cdf KM |
588 | if (ret < 0) |
589 | goto dai_trigger_end; | |
590 | ||
68b6af36 | 591 | ret = rsnd_dai_call(start, io, rdai); |
cdaa3cdf KM |
592 | if (ret < 0) |
593 | goto dai_trigger_end; | |
1536a968 KM |
594 | break; |
595 | case SNDRV_PCM_TRIGGER_STOP: | |
68b6af36 | 596 | ret = rsnd_dai_call(stop, io, rdai); |
cdaa3cdf KM |
597 | if (ret < 0) |
598 | goto dai_trigger_end; | |
599 | ||
68b6af36 | 600 | ret = rsnd_dai_call(quit, io, rdai); |
cdaa3cdf KM |
601 | if (ret < 0) |
602 | goto dai_trigger_end; | |
603 | ||
3337744a KM |
604 | ret = rsnd_platform_call(priv, dai, stop, ssi_id); |
605 | if (ret < 0) | |
606 | goto dai_trigger_end; | |
1536a968 KM |
607 | break; |
608 | default: | |
609 | ret = -EINVAL; | |
610 | } | |
611 | ||
612 | dai_trigger_end: | |
613 | rsnd_unlock(priv, flags); | |
614 | ||
615 | return ret; | |
616 | } | |
617 | ||
618 | static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
619 | { | |
620 | struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); | |
621 | ||
622 | /* set master/slave audio interface */ | |
623 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
624 | case SND_SOC_DAIFMT_CBM_CFM: | |
e1508289 | 625 | rdai->clk_master = 0; |
1536a968 KM |
626 | break; |
627 | case SND_SOC_DAIFMT_CBS_CFS: | |
e1508289 | 628 | rdai->clk_master = 1; /* codec is slave, cpu is master */ |
1536a968 KM |
629 | break; |
630 | default: | |
631 | return -EINVAL; | |
632 | } | |
633 | ||
634 | /* set clock inversion */ | |
635 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
636 | case SND_SOC_DAIFMT_NB_IF: | |
637 | rdai->bit_clk_inv = 0; | |
638 | rdai->frm_clk_inv = 1; | |
639 | break; | |
640 | case SND_SOC_DAIFMT_IB_NF: | |
641 | rdai->bit_clk_inv = 1; | |
642 | rdai->frm_clk_inv = 0; | |
643 | break; | |
644 | case SND_SOC_DAIFMT_IB_IF: | |
645 | rdai->bit_clk_inv = 1; | |
646 | rdai->frm_clk_inv = 1; | |
647 | break; | |
648 | case SND_SOC_DAIFMT_NB_NF: | |
649 | default: | |
650 | rdai->bit_clk_inv = 0; | |
651 | rdai->frm_clk_inv = 0; | |
652 | break; | |
653 | } | |
654 | ||
655 | /* set format */ | |
656 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
657 | case SND_SOC_DAIFMT_I2S: | |
658 | rdai->sys_delay = 0; | |
659 | rdai->data_alignment = 0; | |
660 | break; | |
661 | case SND_SOC_DAIFMT_LEFT_J: | |
662 | rdai->sys_delay = 1; | |
663 | rdai->data_alignment = 0; | |
664 | break; | |
665 | case SND_SOC_DAIFMT_RIGHT_J: | |
666 | rdai->sys_delay = 1; | |
667 | rdai->data_alignment = 1; | |
668 | break; | |
669 | } | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | static const struct snd_soc_dai_ops rsnd_soc_dai_ops = { | |
675 | .trigger = rsnd_soc_dai_trigger, | |
676 | .set_fmt = rsnd_soc_dai_set_fmt, | |
677 | }; | |
678 | ||
739f9502 KM |
679 | #define rsnd_path_parse(priv, io, type) \ |
680 | ({ \ | |
681 | struct rsnd_mod *mod; \ | |
682 | int ret = 0; \ | |
683 | int id = -1; \ | |
684 | \ | |
685 | if (rsnd_is_enable_path(io, type)) { \ | |
686 | id = rsnd_info_id(priv, io, type); \ | |
687 | if (id >= 0) { \ | |
688 | mod = rsnd_##type##_mod_get(priv, id); \ | |
689 | ret = rsnd_dai_connect(mod, io); \ | |
690 | } \ | |
691 | } \ | |
692 | ret; \ | |
693 | }) | |
694 | ||
9bfed6cf KM |
695 | static int rsnd_path_init(struct rsnd_priv *priv, |
696 | struct rsnd_dai *rdai, | |
697 | struct rsnd_dai_stream *io) | |
698 | { | |
9bfed6cf | 699 | int ret; |
9bfed6cf KM |
700 | |
701 | /* | |
702 | * Gen1 is created by SRU/SSI, and this SRU is base module of | |
703 | * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU) | |
704 | * | |
705 | * Easy image is.. | |
706 | * Gen1 SRU = Gen2 SCU + SSIU + etc | |
707 | * | |
708 | * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is | |
709 | * using fixed path. | |
9bfed6cf | 710 | */ |
9bfed6cf | 711 | |
ba9c949f | 712 | /* SRC */ |
739f9502 KM |
713 | ret = rsnd_path_parse(priv, io, src); |
714 | if (ret < 0) | |
715 | return ret; | |
9bfed6cf KM |
716 | |
717 | /* SSI */ | |
739f9502 KM |
718 | ret = rsnd_path_parse(priv, io, ssi); |
719 | if (ret < 0) | |
720 | return ret; | |
9bfed6cf | 721 | |
bff58ea4 KM |
722 | /* DVC */ |
723 | ret = rsnd_path_parse(priv, io, dvc); | |
724 | if (ret < 0) | |
725 | return ret; | |
9bfed6cf KM |
726 | |
727 | return ret; | |
728 | } | |
729 | ||
90e8e50f KM |
730 | static void rsnd_of_parse_dai(struct platform_device *pdev, |
731 | const struct rsnd_of_data *of_data, | |
732 | struct rsnd_priv *priv) | |
733 | { | |
734 | struct device_node *dai_node, *dai_np; | |
735 | struct device_node *ssi_node, *ssi_np; | |
736 | struct device_node *src_node, *src_np; | |
737 | struct device_node *playback, *capture; | |
738 | struct rsnd_dai_platform_info *dai_info; | |
739 | struct rcar_snd_info *info = rsnd_priv_to_info(priv); | |
740 | struct device *dev = &pdev->dev; | |
741 | int nr, i; | |
742 | int dai_i, ssi_i, src_i; | |
743 | ||
744 | if (!of_data) | |
745 | return; | |
746 | ||
747 | dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai"); | |
748 | if (!dai_node) | |
749 | return; | |
750 | ||
751 | nr = of_get_child_count(dai_node); | |
752 | if (!nr) | |
753 | return; | |
754 | ||
755 | dai_info = devm_kzalloc(dev, | |
756 | sizeof(struct rsnd_dai_platform_info) * nr, | |
757 | GFP_KERNEL); | |
758 | if (!dai_info) { | |
759 | dev_err(dev, "dai info allocation error\n"); | |
760 | return; | |
761 | } | |
762 | ||
763 | info->dai_info_nr = nr; | |
764 | info->dai_info = dai_info; | |
765 | ||
766 | ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi"); | |
767 | src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src"); | |
768 | ||
769 | #define mod_parse(name) \ | |
770 | if (name##_node) { \ | |
771 | struct rsnd_##name##_platform_info *name##_info; \ | |
772 | \ | |
773 | name##_i = 0; \ | |
774 | for_each_child_of_node(name##_node, name##_np) { \ | |
775 | name##_info = info->name##_info + name##_i; \ | |
776 | \ | |
777 | if (name##_np == playback) \ | |
778 | dai_info->playback.name = name##_info; \ | |
779 | if (name##_np == capture) \ | |
780 | dai_info->capture.name = name##_info; \ | |
781 | \ | |
782 | name##_i++; \ | |
783 | } \ | |
784 | } | |
785 | ||
786 | /* | |
787 | * parse all dai | |
788 | */ | |
789 | dai_i = 0; | |
790 | for_each_child_of_node(dai_node, dai_np) { | |
791 | dai_info = info->dai_info + dai_i; | |
792 | ||
793 | for (i = 0;; i++) { | |
794 | ||
795 | playback = of_parse_phandle(dai_np, "playback", i); | |
796 | capture = of_parse_phandle(dai_np, "capture", i); | |
797 | ||
798 | if (!playback && !capture) | |
799 | break; | |
800 | ||
801 | mod_parse(ssi); | |
802 | mod_parse(src); | |
803 | ||
804 | if (playback) | |
805 | of_node_put(playback); | |
806 | if (capture) | |
807 | of_node_put(capture); | |
808 | } | |
809 | ||
810 | dai_i++; | |
811 | } | |
812 | } | |
813 | ||
1536a968 | 814 | static int rsnd_dai_probe(struct platform_device *pdev, |
90e8e50f | 815 | const struct rsnd_of_data *of_data, |
1536a968 KM |
816 | struct rsnd_priv *priv) |
817 | { | |
818 | struct snd_soc_dai_driver *drv; | |
78f13d0c | 819 | struct rcar_snd_info *info = rsnd_priv_to_info(priv); |
1536a968 | 820 | struct rsnd_dai *rdai; |
29e69fd2 | 821 | struct rsnd_ssi_platform_info *pmod, *cmod; |
1536a968 | 822 | struct device *dev = rsnd_priv_to_dev(priv); |
90e8e50f | 823 | int dai_nr; |
4b4dab82 KM |
824 | int i; |
825 | ||
90e8e50f KM |
826 | rsnd_of_parse_dai(pdev, of_data, priv); |
827 | ||
90e8e50f | 828 | dai_nr = info->dai_info_nr; |
4b4dab82 KM |
829 | if (!dai_nr) { |
830 | dev_err(dev, "no dai\n"); | |
831 | return -EIO; | |
832 | } | |
1536a968 KM |
833 | |
834 | drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL); | |
835 | rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL); | |
836 | if (!drv || !rdai) { | |
837 | dev_err(dev, "dai allocate failed\n"); | |
838 | return -ENOMEM; | |
839 | } | |
840 | ||
ecba9e72 | 841 | priv->rdai_nr = dai_nr; |
49848073 KM |
842 | priv->daidrv = drv; |
843 | priv->rdai = rdai; | |
844 | ||
1536a968 | 845 | for (i = 0; i < dai_nr; i++) { |
29e69fd2 | 846 | rdai[i].info = &info->dai_info[i]; |
1536a968 | 847 | |
29e69fd2 KM |
848 | pmod = rdai[i].info->playback.ssi; |
849 | cmod = rdai[i].info->capture.ssi; | |
1536a968 KM |
850 | |
851 | /* | |
852 | * init rsnd_dai | |
853 | */ | |
1536a968 KM |
854 | snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i); |
855 | ||
856 | /* | |
857 | * init snd_soc_dai_driver | |
858 | */ | |
859 | drv[i].name = rdai[i].name; | |
860 | drv[i].ops = &rsnd_soc_dai_ops; | |
4b4dab82 | 861 | if (pmod) { |
1536a968 KM |
862 | drv[i].playback.rates = RSND_RATES; |
863 | drv[i].playback.formats = RSND_FMTS; | |
864 | drv[i].playback.channels_min = 2; | |
865 | drv[i].playback.channels_max = 2; | |
389933d9 | 866 | |
29e69fd2 | 867 | rdai[i].playback.info = &info->dai_info[i].playback; |
9bfed6cf | 868 | rsnd_path_init(priv, &rdai[i], &rdai[i].playback); |
1536a968 | 869 | } |
4b4dab82 | 870 | if (cmod) { |
1536a968 KM |
871 | drv[i].capture.rates = RSND_RATES; |
872 | drv[i].capture.formats = RSND_FMTS; | |
873 | drv[i].capture.channels_min = 2; | |
874 | drv[i].capture.channels_max = 2; | |
389933d9 | 875 | |
29e69fd2 | 876 | rdai[i].capture.info = &info->dai_info[i].capture; |
9bfed6cf | 877 | rsnd_path_init(priv, &rdai[i], &rdai[i].capture); |
1536a968 KM |
878 | } |
879 | ||
4b4dab82 KM |
880 | dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name, |
881 | pmod ? "play" : " -- ", | |
882 | cmod ? "capture" : " -- "); | |
1536a968 KM |
883 | } |
884 | ||
1536a968 KM |
885 | return 0; |
886 | } | |
887 | ||
1536a968 KM |
888 | /* |
889 | * pcm ops | |
890 | */ | |
891 | static struct snd_pcm_hardware rsnd_pcm_hardware = { | |
892 | .info = SNDRV_PCM_INFO_INTERLEAVED | | |
893 | SNDRV_PCM_INFO_MMAP | | |
894 | SNDRV_PCM_INFO_MMAP_VALID | | |
895 | SNDRV_PCM_INFO_PAUSE, | |
1536a968 KM |
896 | .buffer_bytes_max = 64 * 1024, |
897 | .period_bytes_min = 32, | |
898 | .period_bytes_max = 8192, | |
899 | .periods_min = 1, | |
900 | .periods_max = 32, | |
901 | .fifo_size = 256, | |
902 | }; | |
903 | ||
904 | static int rsnd_pcm_open(struct snd_pcm_substream *substream) | |
905 | { | |
906 | struct snd_pcm_runtime *runtime = substream->runtime; | |
907 | int ret = 0; | |
908 | ||
909 | snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware); | |
910 | ||
911 | ret = snd_pcm_hw_constraint_integer(runtime, | |
912 | SNDRV_PCM_HW_PARAM_PERIODS); | |
913 | ||
914 | return ret; | |
915 | } | |
916 | ||
917 | static int rsnd_hw_params(struct snd_pcm_substream *substream, | |
918 | struct snd_pcm_hw_params *hw_params) | |
919 | { | |
920 | return snd_pcm_lib_malloc_pages(substream, | |
921 | params_buffer_bytes(hw_params)); | |
922 | } | |
923 | ||
924 | static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream) | |
925 | { | |
926 | struct snd_pcm_runtime *runtime = substream->runtime; | |
927 | struct snd_soc_dai *dai = rsnd_substream_to_dai(substream); | |
928 | struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai); | |
929 | struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream); | |
930 | ||
931 | return bytes_to_frames(runtime, io->byte_pos); | |
932 | } | |
933 | ||
934 | static struct snd_pcm_ops rsnd_pcm_ops = { | |
935 | .open = rsnd_pcm_open, | |
936 | .ioctl = snd_pcm_lib_ioctl, | |
937 | .hw_params = rsnd_hw_params, | |
938 | .hw_free = snd_pcm_lib_free_pages, | |
939 | .pointer = rsnd_pointer, | |
940 | }; | |
941 | ||
942 | /* | |
943 | * snd_soc_platform | |
944 | */ | |
945 | ||
946 | #define PREALLOC_BUFFER (32 * 1024) | |
947 | #define PREALLOC_BUFFER_MAX (32 * 1024) | |
948 | ||
949 | static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd) | |
950 | { | |
bff58ea4 KM |
951 | struct rsnd_priv *priv = snd_soc_dai_get_drvdata(rtd->cpu_dai); |
952 | struct rsnd_dai *rdai; | |
953 | int i, ret; | |
954 | ||
955 | for_each_rsnd_dai(rdai, priv, i) { | |
956 | ret = rsnd_dai_call(pcm_new, &rdai->playback, rdai, rtd); | |
957 | if (ret) | |
958 | return ret; | |
959 | ||
960 | ret = rsnd_dai_call(pcm_new, &rdai->capture, rdai, rtd); | |
961 | if (ret) | |
962 | return ret; | |
963 | } | |
964 | ||
1536a968 KM |
965 | return snd_pcm_lib_preallocate_pages_for_all( |
966 | rtd->pcm, | |
967 | SNDRV_DMA_TYPE_DEV, | |
968 | rtd->card->snd_card->dev, | |
969 | PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); | |
970 | } | |
971 | ||
972 | static void rsnd_pcm_free(struct snd_pcm *pcm) | |
973 | { | |
974 | snd_pcm_lib_preallocate_free_for_all(pcm); | |
975 | } | |
976 | ||
977 | static struct snd_soc_platform_driver rsnd_soc_platform = { | |
978 | .ops = &rsnd_pcm_ops, | |
979 | .pcm_new = rsnd_pcm_new, | |
980 | .pcm_free = rsnd_pcm_free, | |
981 | }; | |
982 | ||
983 | static const struct snd_soc_component_driver rsnd_soc_component = { | |
984 | .name = "rsnd", | |
985 | }; | |
986 | ||
987 | /* | |
988 | * rsnd probe | |
989 | */ | |
990 | static int rsnd_probe(struct platform_device *pdev) | |
991 | { | |
992 | struct rcar_snd_info *info; | |
993 | struct rsnd_priv *priv; | |
994 | struct device *dev = &pdev->dev; | |
7681f6ac | 995 | struct rsnd_dai *rdai; |
90e8e50f KM |
996 | const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev); |
997 | const struct rsnd_of_data *of_data; | |
d1ac970f | 998 | int (*probe_func[])(struct platform_device *pdev, |
90e8e50f | 999 | const struct rsnd_of_data *of_data, |
d1ac970f KM |
1000 | struct rsnd_priv *priv) = { |
1001 | rsnd_gen_probe, | |
1002 | rsnd_ssi_probe, | |
ba9c949f | 1003 | rsnd_src_probe, |
bff58ea4 | 1004 | rsnd_dvc_probe, |
d1ac970f KM |
1005 | rsnd_adg_probe, |
1006 | rsnd_dai_probe, | |
1007 | }; | |
1008 | int ret, i; | |
1536a968 | 1009 | |
90e8e50f KM |
1010 | info = NULL; |
1011 | of_data = NULL; | |
1012 | if (of_id) { | |
1013 | info = devm_kzalloc(&pdev->dev, | |
1014 | sizeof(struct rcar_snd_info), GFP_KERNEL); | |
1015 | of_data = of_id->data; | |
1016 | } else { | |
1017 | info = pdev->dev.platform_data; | |
1018 | } | |
1019 | ||
1536a968 KM |
1020 | if (!info) { |
1021 | dev_err(dev, "driver needs R-Car sound information\n"); | |
1022 | return -ENODEV; | |
1023 | } | |
1024 | ||
1025 | /* | |
1026 | * init priv data | |
1027 | */ | |
1028 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); | |
1029 | if (!priv) { | |
1030 | dev_err(dev, "priv allocate failed\n"); | |
1031 | return -ENODEV; | |
1032 | } | |
1033 | ||
9f464f8e | 1034 | priv->pdev = pdev; |
1536a968 KM |
1035 | priv->info = info; |
1036 | spin_lock_init(&priv->lock); | |
1037 | ||
1038 | /* | |
1039 | * init each module | |
1040 | */ | |
d1ac970f | 1041 | for (i = 0; i < ARRAY_SIZE(probe_func); i++) { |
90e8e50f | 1042 | ret = probe_func[i](pdev, of_data, priv); |
d1ac970f KM |
1043 | if (ret) |
1044 | return ret; | |
1045 | } | |
07539c1d | 1046 | |
7681f6ac | 1047 | for_each_rsnd_dai(rdai, priv, i) { |
68b6af36 | 1048 | ret = rsnd_dai_call(probe, &rdai->playback, rdai); |
7681f6ac KM |
1049 | if (ret) |
1050 | return ret; | |
dfc9403b | 1051 | |
68b6af36 | 1052 | ret = rsnd_dai_call(probe, &rdai->capture, rdai); |
7681f6ac KM |
1053 | if (ret) |
1054 | return ret; | |
1055 | } | |
4b4dab82 | 1056 | |
1536a968 KM |
1057 | /* |
1058 | * asoc register | |
1059 | */ | |
1060 | ret = snd_soc_register_platform(dev, &rsnd_soc_platform); | |
1061 | if (ret < 0) { | |
1062 | dev_err(dev, "cannot snd soc register\n"); | |
1063 | return ret; | |
1064 | } | |
1065 | ||
1066 | ret = snd_soc_register_component(dev, &rsnd_soc_component, | |
ecba9e72 | 1067 | priv->daidrv, rsnd_rdai_nr(priv)); |
1536a968 KM |
1068 | if (ret < 0) { |
1069 | dev_err(dev, "cannot snd dai register\n"); | |
1070 | goto exit_snd_soc; | |
1071 | } | |
1072 | ||
1073 | dev_set_drvdata(dev, priv); | |
1074 | ||
1075 | pm_runtime_enable(dev); | |
1076 | ||
1077 | dev_info(dev, "probed\n"); | |
1078 | return ret; | |
1079 | ||
1080 | exit_snd_soc: | |
1081 | snd_soc_unregister_platform(dev); | |
1082 | ||
1083 | return ret; | |
1084 | } | |
1085 | ||
1086 | static int rsnd_remove(struct platform_device *pdev) | |
1087 | { | |
1088 | struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev); | |
7681f6ac KM |
1089 | struct rsnd_dai *rdai; |
1090 | int ret, i; | |
1536a968 KM |
1091 | |
1092 | pm_runtime_disable(&pdev->dev); | |
1093 | ||
7681f6ac | 1094 | for_each_rsnd_dai(rdai, priv, i) { |
68b6af36 | 1095 | ret = rsnd_dai_call(remove, &rdai->playback, rdai); |
7681f6ac KM |
1096 | if (ret) |
1097 | return ret; | |
1098 | ||
68b6af36 | 1099 | ret = rsnd_dai_call(remove, &rdai->capture, rdai); |
7681f6ac KM |
1100 | if (ret) |
1101 | return ret; | |
1102 | } | |
1536a968 KM |
1103 | |
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | static struct platform_driver rsnd_driver = { | |
1108 | .driver = { | |
1109 | .name = "rcar_sound", | |
90e8e50f | 1110 | .of_match_table = rsnd_of_match, |
1536a968 KM |
1111 | }, |
1112 | .probe = rsnd_probe, | |
1113 | .remove = rsnd_remove, | |
1114 | }; | |
1115 | module_platform_driver(rsnd_driver); | |
1116 | ||
1117 | MODULE_LICENSE("GPL"); | |
1118 | MODULE_DESCRIPTION("Renesas R-Car audio driver"); | |
1119 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); | |
1120 | MODULE_ALIAS("platform:rcar-pcm-audio"); |