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[mirror_ubuntu-bionic-kernel.git] / sound / soc / sh / rcar / core.c
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 * |
76 * | ** these control src
77 * |
78 * +- src
79 * |
80 * +- src[0]
81 * +- src[1]
82 * +- src[2]
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>
97 #include "rsnd.h"
98
99 #define RSND_RATES SNDRV_PCM_RATE_8000_96000
100 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
101
102 static const struct of_device_id rsnd_of_match[] = {
103 { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 },
104 { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 },
105 { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN2 }, /* gen2 compatible */
106 {},
107 };
108 MODULE_DEVICE_TABLE(of, rsnd_of_match);
109
110 /*
111 * rsnd_mod functions
112 */
113 #ifdef DEBUG
114 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
115 {
116 if (mod->type != type) {
117 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
118 struct device *dev = rsnd_priv_to_dev(priv);
119
120 dev_warn(dev, "%s[%d] is not your expected module\n",
121 rsnd_mod_name(mod), rsnd_mod_id(mod));
122 }
123 }
124 #endif
125
126 char *rsnd_mod_name(struct rsnd_mod *mod)
127 {
128 if (!mod || !mod->ops)
129 return "unknown";
130
131 return mod->ops->name;
132 }
133
134 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
135 struct rsnd_mod *mod)
136 {
137 if (!mod || !mod->ops || !mod->ops->dma_req)
138 return NULL;
139
140 return mod->ops->dma_req(io, mod);
141 }
142
143 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
144 struct rsnd_mod *mod,
145 enum rsnd_mod_type type)
146 {
147 return &mod->status;
148 }
149
150 int rsnd_mod_init(struct rsnd_priv *priv,
151 struct rsnd_mod *mod,
152 struct rsnd_mod_ops *ops,
153 struct clk *clk,
154 u32* (*get_status)(struct rsnd_dai_stream *io,
155 struct rsnd_mod *mod,
156 enum rsnd_mod_type type),
157 enum rsnd_mod_type type,
158 int id)
159 {
160 int ret = clk_prepare(clk);
161
162 if (ret)
163 return ret;
164
165 mod->id = id;
166 mod->ops = ops;
167 mod->type = type;
168 mod->clk = clk;
169 mod->priv = priv;
170 mod->get_status = get_status;
171
172 return ret;
173 }
174
175 void rsnd_mod_quit(struct rsnd_mod *mod)
176 {
177 if (mod->clk)
178 clk_unprepare(mod->clk);
179 mod->clk = NULL;
180 }
181
182 void rsnd_mod_interrupt(struct rsnd_mod *mod,
183 void (*callback)(struct rsnd_mod *mod,
184 struct rsnd_dai_stream *io))
185 {
186 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
187 struct rsnd_dai_stream *io;
188 struct rsnd_dai *rdai;
189 int i;
190
191 for_each_rsnd_dai(rdai, priv, i) {
192 io = &rdai->playback;
193 if (mod == io->mod[mod->type])
194 callback(mod, io);
195
196 io = &rdai->capture;
197 if (mod == io->mod[mod->type])
198 callback(mod, io);
199 }
200 }
201
202 int rsnd_io_is_working(struct rsnd_dai_stream *io)
203 {
204 /* see rsnd_dai_stream_init/quit() */
205 return !!io->substream;
206 }
207
208 void rsnd_set_slot(struct rsnd_dai *rdai,
209 int slots, int num)
210 {
211 rdai->slots = slots;
212 rdai->slots_num = num;
213 }
214
215 int rsnd_get_slot(struct rsnd_dai_stream *io)
216 {
217 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
218
219 return rdai->slots;
220 }
221
222 int rsnd_get_slot_num(struct rsnd_dai_stream *io)
223 {
224 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
225
226 return rdai->slots_num;
227 }
228
229 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io)
230 {
231 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
232
233 return runtime->channels;
234 }
235
236 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
237 {
238 int chan = rsnd_runtime_channel_original(io);
239 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
240
241 if (ctu_mod) {
242 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
243
244 if (converted_chan)
245 return converted_chan;
246 }
247
248 return chan;
249 }
250
251 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
252 {
253 int chan = rsnd_io_is_play(io) ?
254 rsnd_runtime_channel_after_ctu(io) :
255 rsnd_runtime_channel_original(io);
256
257 /* Use Multi SSI */
258 if (rsnd_runtime_is_ssi_multi(io))
259 chan /= rsnd_get_slot_num(io);
260
261 /* TDM Extend Mode needs 8ch */
262 if (chan == 6)
263 chan = 8;
264
265 return chan;
266 }
267
268 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
269 {
270 int slots = rsnd_get_slot_num(io);
271 int chan = rsnd_io_is_play(io) ?
272 rsnd_runtime_channel_after_ctu(io) :
273 rsnd_runtime_channel_original(io);
274
275 return (chan >= 6) && (slots > 1);
276 }
277
278 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
279 {
280 return rsnd_runtime_channel_for_ssi(io) >= 6;
281 }
282
283 /*
284 * ADINR function
285 */
286 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
287 {
288 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
289 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
290 struct device *dev = rsnd_priv_to_dev(priv);
291
292 switch (runtime->sample_bits) {
293 case 16:
294 return 8 << 16;
295 case 32:
296 return 0 << 16;
297 }
298
299 dev_warn(dev, "not supported sample bits\n");
300
301 return 0;
302 }
303
304 /*
305 * DALIGN function
306 */
307 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
308 {
309 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
310 struct rsnd_mod *target;
311 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
312 u32 val = 0x76543210;
313 u32 mask = ~0;
314
315 if (rsnd_io_is_play(io)) {
316 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
317
318 target = src ? src : ssiu;
319 } else {
320 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
321
322 target = cmd ? cmd : ssiu;
323 }
324
325 mask <<= runtime->channels * 4;
326 val = val & mask;
327
328 switch (runtime->sample_bits) {
329 case 16:
330 val |= 0x67452301 & ~mask;
331 break;
332 case 32:
333 val |= 0x76543210 & ~mask;
334 break;
335 }
336
337 /*
338 * exchange channeles on SRC if possible,
339 * otherwise, R/L volume settings on DVC
340 * changes inverted channels
341 */
342 if (mod == target)
343 return val;
344 else
345 return 0x76543210;
346 }
347
348 /*
349 * rsnd_dai functions
350 */
351 struct rsnd_mod *rsnd_mod_next(int *iterator,
352 struct rsnd_dai_stream *io,
353 enum rsnd_mod_type *array,
354 int array_size)
355 {
356 struct rsnd_mod *mod;
357 enum rsnd_mod_type type;
358 int max = array ? array_size : RSND_MOD_MAX;
359
360 for (; *iterator < max; (*iterator)++) {
361 type = (array) ? array[*iterator] : *iterator;
362 mod = io->mod[type];
363 if (!mod)
364 continue;
365
366 return mod;
367 }
368
369 return NULL;
370 }
371
372 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
373 {
374 /* CAPTURE */
375 RSND_MOD_AUDMAPP,
376 RSND_MOD_AUDMA,
377 RSND_MOD_DVC,
378 RSND_MOD_MIX,
379 RSND_MOD_CTU,
380 RSND_MOD_CMD,
381 RSND_MOD_SRC,
382 RSND_MOD_SSIU,
383 RSND_MOD_SSIM3,
384 RSND_MOD_SSIM2,
385 RSND_MOD_SSIM1,
386 RSND_MOD_SSIP,
387 RSND_MOD_SSI,
388 }, {
389 /* PLAYBACK */
390 RSND_MOD_AUDMAPP,
391 RSND_MOD_AUDMA,
392 RSND_MOD_SSIM3,
393 RSND_MOD_SSIM2,
394 RSND_MOD_SSIM1,
395 RSND_MOD_SSIP,
396 RSND_MOD_SSI,
397 RSND_MOD_SSIU,
398 RSND_MOD_DVC,
399 RSND_MOD_MIX,
400 RSND_MOD_CTU,
401 RSND_MOD_CMD,
402 RSND_MOD_SRC,
403 },
404 };
405
406 static int rsnd_status_update(u32 *status,
407 int shift, int add, int timing)
408 {
409 u32 mask = 0xF << shift;
410 u8 val = (*status >> shift) & 0xF;
411 u8 next_val = (val + add) & 0xF;
412 int func_call = (val == timing);
413
414 if (next_val == 0xF) /* underflow case */
415 func_call = 0;
416 else
417 *status = (*status & ~mask) + (next_val << shift);
418
419 return func_call;
420 }
421
422 #define rsnd_dai_call(fn, io, param...) \
423 ({ \
424 struct rsnd_priv *priv = rsnd_io_to_priv(io); \
425 struct device *dev = rsnd_priv_to_dev(priv); \
426 struct rsnd_mod *mod; \
427 int is_play = rsnd_io_is_play(io); \
428 int ret = 0, i; \
429 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \
430 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \
431 int tmp = 0; \
432 u32 *status = mod->get_status(io, mod, types[i]); \
433 int func_call = rsnd_status_update(status, \
434 __rsnd_mod_shift_##fn, \
435 __rsnd_mod_add_##fn, \
436 __rsnd_mod_call_##fn); \
437 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
438 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \
439 (func_call && (mod)->ops->fn) ? #fn : ""); \
440 if (func_call && (mod)->ops->fn) \
441 tmp = (mod)->ops->fn(mod, io, param); \
442 if (tmp) \
443 dev_err(dev, "%s[%d] : %s error %d\n", \
444 rsnd_mod_name(mod), rsnd_mod_id(mod), \
445 #fn, tmp); \
446 ret |= tmp; \
447 } \
448 ret; \
449 })
450
451 int rsnd_dai_connect(struct rsnd_mod *mod,
452 struct rsnd_dai_stream *io,
453 enum rsnd_mod_type type)
454 {
455 struct rsnd_priv *priv;
456 struct device *dev;
457
458 if (!mod)
459 return -EIO;
460
461 if (io->mod[type] == mod)
462 return 0;
463
464 if (io->mod[type])
465 return -EINVAL;
466
467 priv = rsnd_mod_to_priv(mod);
468 dev = rsnd_priv_to_dev(priv);
469
470 io->mod[type] = mod;
471
472 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
473 rsnd_mod_name(mod), rsnd_mod_id(mod),
474 rsnd_io_is_play(io) ? "Playback" : "Capture");
475
476 return 0;
477 }
478
479 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
480 struct rsnd_dai_stream *io,
481 enum rsnd_mod_type type)
482 {
483 io->mod[type] = NULL;
484 }
485
486 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
487 {
488 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
489 return NULL;
490
491 return priv->rdai + id;
492 }
493
494 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
495 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
496 {
497 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
498
499 return rsnd_rdai_get(priv, dai->id);
500 }
501
502 /*
503 * rsnd_soc_dai functions
504 */
505 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
506 {
507 struct snd_pcm_substream *substream = io->substream;
508 struct snd_pcm_runtime *runtime = substream->runtime;
509 int pos = io->byte_pos + additional;
510
511 pos %= (runtime->periods * io->byte_per_period);
512
513 return pos;
514 }
515
516 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
517 {
518 io->byte_pos += byte;
519
520 if (io->byte_pos >= io->next_period_byte) {
521 struct snd_pcm_substream *substream = io->substream;
522 struct snd_pcm_runtime *runtime = substream->runtime;
523
524 io->period_pos++;
525 io->next_period_byte += io->byte_per_period;
526
527 if (io->period_pos >= runtime->periods) {
528 io->byte_pos = 0;
529 io->period_pos = 0;
530 io->next_period_byte = io->byte_per_period;
531 }
532
533 return true;
534 }
535
536 return false;
537 }
538
539 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
540 {
541 struct snd_pcm_substream *substream = io->substream;
542
543 /*
544 * this function should be called...
545 *
546 * - if rsnd_dai_pointer_update() returns true
547 * - without spin lock
548 */
549
550 snd_pcm_period_elapsed(substream);
551 }
552
553 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
554 struct snd_pcm_substream *substream)
555 {
556 struct snd_pcm_runtime *runtime = substream->runtime;
557
558 io->substream = substream;
559 io->byte_pos = 0;
560 io->period_pos = 0;
561 io->byte_per_period = runtime->period_size *
562 runtime->channels *
563 samples_to_bytes(runtime, 1);
564 io->next_period_byte = io->byte_per_period;
565 }
566
567 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
568 {
569 io->substream = NULL;
570 }
571
572 static
573 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
574 {
575 struct snd_soc_pcm_runtime *rtd = substream->private_data;
576
577 return rtd->cpu_dai;
578 }
579
580 static
581 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
582 struct snd_pcm_substream *substream)
583 {
584 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
585 return &rdai->playback;
586 else
587 return &rdai->capture;
588 }
589
590 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
591 struct snd_soc_dai *dai)
592 {
593 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
594 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
595 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
596 int ret;
597 unsigned long flags;
598
599 spin_lock_irqsave(&priv->lock, flags);
600
601 switch (cmd) {
602 case SNDRV_PCM_TRIGGER_START:
603 case SNDRV_PCM_TRIGGER_RESUME:
604 rsnd_dai_stream_init(io, substream);
605
606 ret = rsnd_dai_call(init, io, priv);
607 if (ret < 0)
608 goto dai_trigger_end;
609
610 ret = rsnd_dai_call(start, io, priv);
611 if (ret < 0)
612 goto dai_trigger_end;
613
614 ret = rsnd_dai_call(irq, io, priv, 1);
615 if (ret < 0)
616 goto dai_trigger_end;
617
618 break;
619 case SNDRV_PCM_TRIGGER_STOP:
620 case SNDRV_PCM_TRIGGER_SUSPEND:
621 ret = rsnd_dai_call(irq, io, priv, 0);
622
623 ret |= rsnd_dai_call(stop, io, priv);
624
625 ret |= rsnd_dai_call(quit, io, priv);
626
627 rsnd_dai_stream_quit(io);
628 break;
629 default:
630 ret = -EINVAL;
631 }
632
633 dai_trigger_end:
634 spin_unlock_irqrestore(&priv->lock, flags);
635
636 return ret;
637 }
638
639 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
640 {
641 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
642
643 /* set master/slave audio interface */
644 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
645 case SND_SOC_DAIFMT_CBM_CFM:
646 rdai->clk_master = 0;
647 break;
648 case SND_SOC_DAIFMT_CBS_CFS:
649 rdai->clk_master = 1; /* codec is slave, cpu is master */
650 break;
651 default:
652 return -EINVAL;
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 rdai->frm_clk_inv = 0;
661 break;
662 case SND_SOC_DAIFMT_LEFT_J:
663 rdai->sys_delay = 1;
664 rdai->data_alignment = 0;
665 rdai->frm_clk_inv = 1;
666 break;
667 case SND_SOC_DAIFMT_RIGHT_J:
668 rdai->sys_delay = 1;
669 rdai->data_alignment = 1;
670 rdai->frm_clk_inv = 1;
671 break;
672 }
673
674 /* set clock inversion */
675 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
676 case SND_SOC_DAIFMT_NB_IF:
677 rdai->bit_clk_inv = rdai->bit_clk_inv;
678 rdai->frm_clk_inv = !rdai->frm_clk_inv;
679 break;
680 case SND_SOC_DAIFMT_IB_NF:
681 rdai->bit_clk_inv = !rdai->bit_clk_inv;
682 rdai->frm_clk_inv = rdai->frm_clk_inv;
683 break;
684 case SND_SOC_DAIFMT_IB_IF:
685 rdai->bit_clk_inv = !rdai->bit_clk_inv;
686 rdai->frm_clk_inv = !rdai->frm_clk_inv;
687 break;
688 case SND_SOC_DAIFMT_NB_NF:
689 default:
690 break;
691 }
692
693 return 0;
694 }
695
696 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
697 u32 tx_mask, u32 rx_mask,
698 int slots, int slot_width)
699 {
700 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
701 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
702 struct device *dev = rsnd_priv_to_dev(priv);
703
704 switch (slots) {
705 case 6:
706 /* TDM Extend Mode */
707 rsnd_set_slot(rdai, slots, 1);
708 break;
709 default:
710 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
711 return -EINVAL;
712 }
713
714 return 0;
715 }
716
717 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
718 struct snd_soc_dai *dai)
719 {
720 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
721 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
722
723 /*
724 * call rsnd_dai_call without spinlock
725 */
726 return rsnd_dai_call(nolock_start, io, priv);
727 }
728
729 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
730 struct snd_soc_dai *dai)
731 {
732 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
733 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
734
735 /*
736 * call rsnd_dai_call without spinlock
737 */
738 rsnd_dai_call(nolock_stop, io, priv);
739 }
740
741 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
742 .startup = rsnd_soc_dai_startup,
743 .shutdown = rsnd_soc_dai_shutdown,
744 .trigger = rsnd_soc_dai_trigger,
745 .set_fmt = rsnd_soc_dai_set_fmt,
746 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
747 };
748
749 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
750 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
751 struct device_node *node,
752 struct device_node *playback,
753 struct device_node *capture)
754 {
755 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
756 struct device_node *np;
757 struct rsnd_mod *mod;
758 int i;
759
760 if (!node)
761 return;
762
763 i = 0;
764 for_each_child_of_node(node, np) {
765 mod = mod_get(priv, i);
766 if (np == playback)
767 rsnd_dai_connect(mod, &rdai->playback, mod->type);
768 if (np == capture)
769 rsnd_dai_connect(mod, &rdai->capture, mod->type);
770 i++;
771 }
772
773 of_node_put(node);
774 }
775
776 static int rsnd_dai_probe(struct rsnd_priv *priv)
777 {
778 struct device_node *dai_node;
779 struct device_node *dai_np;
780 struct device_node *playback, *capture;
781 struct rsnd_dai_stream *io_playback;
782 struct rsnd_dai_stream *io_capture;
783 struct snd_soc_dai_driver *rdrv, *drv;
784 struct rsnd_dai *rdai;
785 struct device *dev = rsnd_priv_to_dev(priv);
786 int nr, dai_i, io_i;
787 int ret;
788
789 dai_node = rsnd_dai_of_node(priv);
790 nr = of_get_child_count(dai_node);
791 if (!nr) {
792 ret = -EINVAL;
793 goto rsnd_dai_probe_done;
794 }
795
796 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
797 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
798 if (!rdrv || !rdai) {
799 ret = -ENOMEM;
800 goto rsnd_dai_probe_done;
801 }
802
803 priv->rdai_nr = nr;
804 priv->daidrv = rdrv;
805 priv->rdai = rdai;
806
807 /*
808 * parse all dai
809 */
810 dai_i = 0;
811 for_each_child_of_node(dai_node, dai_np) {
812 rdai = rsnd_rdai_get(priv, dai_i);
813 drv = rdrv + dai_i;
814 io_playback = &rdai->playback;
815 io_capture = &rdai->capture;
816
817 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
818
819 rdai->priv = priv;
820 drv->name = rdai->name;
821 drv->ops = &rsnd_soc_dai_ops;
822
823 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
824 "DAI%d Playback", dai_i);
825 drv->playback.rates = RSND_RATES;
826 drv->playback.formats = RSND_FMTS;
827 drv->playback.channels_min = 2;
828 drv->playback.channels_max = 6;
829 drv->playback.stream_name = rdai->playback.name;
830
831 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
832 "DAI%d Capture", dai_i);
833 drv->capture.rates = RSND_RATES;
834 drv->capture.formats = RSND_FMTS;
835 drv->capture.channels_min = 2;
836 drv->capture.channels_max = 6;
837 drv->capture.stream_name = rdai->capture.name;
838
839 rdai->playback.rdai = rdai;
840 rdai->capture.rdai = rdai;
841 rsnd_set_slot(rdai, 2, 1); /* default */
842
843 for (io_i = 0;; io_i++) {
844 playback = of_parse_phandle(dai_np, "playback", io_i);
845 capture = of_parse_phandle(dai_np, "capture", io_i);
846
847 if (!playback && !capture)
848 break;
849
850 rsnd_parse_connect_ssi(rdai, playback, capture);
851 rsnd_parse_connect_src(rdai, playback, capture);
852 rsnd_parse_connect_ctu(rdai, playback, capture);
853 rsnd_parse_connect_mix(rdai, playback, capture);
854 rsnd_parse_connect_dvc(rdai, playback, capture);
855
856 of_node_put(playback);
857 of_node_put(capture);
858 }
859
860 dai_i++;
861
862 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
863 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
864 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
865 }
866
867 ret = 0;
868
869 rsnd_dai_probe_done:
870 of_node_put(dai_node);
871
872 return ret;
873 }
874
875 /*
876 * pcm ops
877 */
878 static struct snd_pcm_hardware rsnd_pcm_hardware = {
879 .info = SNDRV_PCM_INFO_INTERLEAVED |
880 SNDRV_PCM_INFO_MMAP |
881 SNDRV_PCM_INFO_MMAP_VALID,
882 .buffer_bytes_max = 64 * 1024,
883 .period_bytes_min = 32,
884 .period_bytes_max = 8192,
885 .periods_min = 1,
886 .periods_max = 32,
887 .fifo_size = 256,
888 };
889
890 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
891 {
892 struct snd_pcm_runtime *runtime = substream->runtime;
893 int ret = 0;
894
895 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
896
897 ret = snd_pcm_hw_constraint_integer(runtime,
898 SNDRV_PCM_HW_PARAM_PERIODS);
899
900 return ret;
901 }
902
903 static int rsnd_hw_params(struct snd_pcm_substream *substream,
904 struct snd_pcm_hw_params *hw_params)
905 {
906 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
907 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
908 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
909 int ret;
910
911 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
912 if (ret)
913 return ret;
914
915 return snd_pcm_lib_malloc_pages(substream,
916 params_buffer_bytes(hw_params));
917 }
918
919 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
920 {
921 struct snd_pcm_runtime *runtime = substream->runtime;
922 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
923 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
924 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
925
926 return bytes_to_frames(runtime, io->byte_pos);
927 }
928
929 static struct snd_pcm_ops rsnd_pcm_ops = {
930 .open = rsnd_pcm_open,
931 .ioctl = snd_pcm_lib_ioctl,
932 .hw_params = rsnd_hw_params,
933 .hw_free = snd_pcm_lib_free_pages,
934 .pointer = rsnd_pointer,
935 };
936
937 /*
938 * snd_kcontrol
939 */
940 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
941 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
942 struct snd_ctl_elem_info *uinfo)
943 {
944 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
945
946 if (cfg->texts) {
947 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
948 uinfo->count = cfg->size;
949 uinfo->value.enumerated.items = cfg->max;
950 if (uinfo->value.enumerated.item >= cfg->max)
951 uinfo->value.enumerated.item = cfg->max - 1;
952 strlcpy(uinfo->value.enumerated.name,
953 cfg->texts[uinfo->value.enumerated.item],
954 sizeof(uinfo->value.enumerated.name));
955 } else {
956 uinfo->count = cfg->size;
957 uinfo->value.integer.min = 0;
958 uinfo->value.integer.max = cfg->max;
959 uinfo->type = (cfg->max == 1) ?
960 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
961 SNDRV_CTL_ELEM_TYPE_INTEGER;
962 }
963
964 return 0;
965 }
966
967 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
968 struct snd_ctl_elem_value *uc)
969 {
970 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
971 int i;
972
973 for (i = 0; i < cfg->size; i++)
974 if (cfg->texts)
975 uc->value.enumerated.item[i] = cfg->val[i];
976 else
977 uc->value.integer.value[i] = cfg->val[i];
978
979 return 0;
980 }
981
982 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
983 struct snd_ctl_elem_value *uc)
984 {
985 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
986 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
987 int i, change = 0;
988
989 for (i = 0; i < cfg->size; i++) {
990 if (cfg->texts) {
991 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
992 cfg->val[i] = uc->value.enumerated.item[i];
993 } else {
994 change |= (uc->value.integer.value[i] != cfg->val[i]);
995 cfg->val[i] = uc->value.integer.value[i];
996 }
997 }
998
999 if (change && cfg->update)
1000 cfg->update(cfg->io, mod);
1001
1002 return change;
1003 }
1004
1005 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
1006 struct rsnd_dai_stream *io,
1007 struct snd_soc_pcm_runtime *rtd,
1008 const unsigned char *name,
1009 struct rsnd_kctrl_cfg *cfg,
1010 void (*update)(struct rsnd_dai_stream *io,
1011 struct rsnd_mod *mod))
1012 {
1013 struct snd_card *card = rtd->card->snd_card;
1014 struct snd_kcontrol *kctrl;
1015 struct snd_kcontrol_new knew = {
1016 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1017 .name = name,
1018 .info = rsnd_kctrl_info,
1019 .index = rtd->num,
1020 .get = rsnd_kctrl_get,
1021 .put = rsnd_kctrl_put,
1022 .private_value = (unsigned long)cfg,
1023 };
1024 int ret;
1025
1026 kctrl = snd_ctl_new1(&knew, mod);
1027 if (!kctrl)
1028 return -ENOMEM;
1029
1030 ret = snd_ctl_add(card, kctrl);
1031 if (ret < 0) {
1032 snd_ctl_free_one(kctrl);
1033 return ret;
1034 }
1035
1036 cfg->update = update;
1037 cfg->card = card;
1038 cfg->kctrl = kctrl;
1039 cfg->io = io;
1040
1041 return 0;
1042 }
1043
1044 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
1045 {
1046 if (cfg->card && cfg->kctrl)
1047 snd_ctl_remove(cfg->card, cfg->kctrl);
1048
1049 cfg->card = NULL;
1050 cfg->kctrl = NULL;
1051 }
1052
1053 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
1054 struct rsnd_dai_stream *io,
1055 struct snd_soc_pcm_runtime *rtd,
1056 const unsigned char *name,
1057 void (*update)(struct rsnd_dai_stream *io,
1058 struct rsnd_mod *mod),
1059 struct rsnd_kctrl_cfg_m *_cfg,
1060 int ch_size,
1061 u32 max)
1062 {
1063 if (ch_size > RSND_MAX_CHANNELS)
1064 return -EINVAL;
1065
1066 _cfg->cfg.max = max;
1067 _cfg->cfg.size = ch_size;
1068 _cfg->cfg.val = _cfg->val;
1069 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1070 }
1071
1072 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1073 struct rsnd_dai_stream *io,
1074 struct snd_soc_pcm_runtime *rtd,
1075 const unsigned char *name,
1076 void (*update)(struct rsnd_dai_stream *io,
1077 struct rsnd_mod *mod),
1078 struct rsnd_kctrl_cfg_s *_cfg,
1079 u32 max)
1080 {
1081 _cfg->cfg.max = max;
1082 _cfg->cfg.size = 1;
1083 _cfg->cfg.val = &_cfg->val;
1084 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1085 }
1086
1087 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1088 struct rsnd_dai_stream *io,
1089 struct snd_soc_pcm_runtime *rtd,
1090 const unsigned char *name,
1091 struct rsnd_kctrl_cfg_s *_cfg,
1092 void (*update)(struct rsnd_dai_stream *io,
1093 struct rsnd_mod *mod),
1094 const char * const *texts,
1095 u32 max)
1096 {
1097 _cfg->cfg.max = max;
1098 _cfg->cfg.size = 1;
1099 _cfg->cfg.val = &_cfg->val;
1100 _cfg->cfg.texts = texts;
1101 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1102 }
1103
1104 /*
1105 * snd_soc_platform
1106 */
1107
1108 #define PREALLOC_BUFFER (32 * 1024)
1109 #define PREALLOC_BUFFER_MAX (32 * 1024)
1110
1111 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1112 {
1113 struct snd_soc_dai *dai = rtd->cpu_dai;
1114 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1115 int ret;
1116
1117 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1118 if (ret)
1119 return ret;
1120
1121 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1122 if (ret)
1123 return ret;
1124
1125 return snd_pcm_lib_preallocate_pages_for_all(
1126 rtd->pcm,
1127 SNDRV_DMA_TYPE_CONTINUOUS,
1128 snd_dma_continuous_data(GFP_KERNEL),
1129 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1130 }
1131
1132 static struct snd_soc_platform_driver rsnd_soc_platform = {
1133 .ops = &rsnd_pcm_ops,
1134 .pcm_new = rsnd_pcm_new,
1135 };
1136
1137 static const struct snd_soc_component_driver rsnd_soc_component = {
1138 .name = "rsnd",
1139 };
1140
1141 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1142 struct rsnd_dai_stream *io)
1143 {
1144 int ret;
1145
1146 ret = rsnd_dai_call(probe, io, priv);
1147 if (ret == -EAGAIN) {
1148 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1149 struct rsnd_mod *mod;
1150 int i;
1151
1152 /*
1153 * Fallback to PIO mode
1154 */
1155
1156 /*
1157 * call "remove" for SSI/SRC/DVC
1158 * SSI will be switch to PIO mode if it was DMA mode
1159 * see
1160 * rsnd_dma_init()
1161 * rsnd_ssi_fallback()
1162 */
1163 rsnd_dai_call(remove, io, priv);
1164
1165 /*
1166 * remove all mod from io
1167 * and, re connect ssi
1168 */
1169 for_each_rsnd_mod(i, mod, io)
1170 rsnd_dai_disconnect(mod, io, i);
1171 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1172
1173 /*
1174 * fallback
1175 */
1176 rsnd_dai_call(fallback, io, priv);
1177
1178 /*
1179 * retry to "probe".
1180 * DAI has SSI which is PIO mode only now.
1181 */
1182 ret = rsnd_dai_call(probe, io, priv);
1183 }
1184
1185 return ret;
1186 }
1187
1188 /*
1189 * rsnd probe
1190 */
1191 static int rsnd_probe(struct platform_device *pdev)
1192 {
1193 struct rsnd_priv *priv;
1194 struct device *dev = &pdev->dev;
1195 struct rsnd_dai *rdai;
1196 int (*probe_func[])(struct rsnd_priv *priv) = {
1197 rsnd_gen_probe,
1198 rsnd_dma_probe,
1199 rsnd_ssi_probe,
1200 rsnd_ssiu_probe,
1201 rsnd_src_probe,
1202 rsnd_ctu_probe,
1203 rsnd_mix_probe,
1204 rsnd_dvc_probe,
1205 rsnd_cmd_probe,
1206 rsnd_adg_probe,
1207 rsnd_dai_probe,
1208 };
1209 int ret, i;
1210
1211 /*
1212 * init priv data
1213 */
1214 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1215 if (!priv) {
1216 dev_err(dev, "priv allocate failed\n");
1217 return -ENODEV;
1218 }
1219
1220 priv->pdev = pdev;
1221 priv->flags = (unsigned long)of_device_get_match_data(dev);
1222 spin_lock_init(&priv->lock);
1223
1224 /*
1225 * init each module
1226 */
1227 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1228 ret = probe_func[i](priv);
1229 if (ret)
1230 return ret;
1231 }
1232
1233 for_each_rsnd_dai(rdai, priv, i) {
1234 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1235 if (ret)
1236 goto exit_snd_probe;
1237
1238 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1239 if (ret)
1240 goto exit_snd_probe;
1241 }
1242
1243 dev_set_drvdata(dev, priv);
1244
1245 /*
1246 * asoc register
1247 */
1248 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1249 if (ret < 0) {
1250 dev_err(dev, "cannot snd soc register\n");
1251 return ret;
1252 }
1253
1254 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1255 priv->daidrv, rsnd_rdai_nr(priv));
1256 if (ret < 0) {
1257 dev_err(dev, "cannot snd dai register\n");
1258 goto exit_snd_soc;
1259 }
1260
1261 pm_runtime_enable(dev);
1262
1263 dev_info(dev, "probed\n");
1264 return ret;
1265
1266 exit_snd_soc:
1267 snd_soc_unregister_platform(dev);
1268 exit_snd_probe:
1269 for_each_rsnd_dai(rdai, priv, i) {
1270 rsnd_dai_call(remove, &rdai->playback, priv);
1271 rsnd_dai_call(remove, &rdai->capture, priv);
1272 }
1273
1274 return ret;
1275 }
1276
1277 static int rsnd_remove(struct platform_device *pdev)
1278 {
1279 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1280 struct rsnd_dai *rdai;
1281 void (*remove_func[])(struct rsnd_priv *priv) = {
1282 rsnd_ssi_remove,
1283 rsnd_ssiu_remove,
1284 rsnd_src_remove,
1285 rsnd_ctu_remove,
1286 rsnd_mix_remove,
1287 rsnd_dvc_remove,
1288 rsnd_cmd_remove,
1289 rsnd_adg_remove,
1290 };
1291 int ret = 0, i;
1292
1293 pm_runtime_disable(&pdev->dev);
1294
1295 for_each_rsnd_dai(rdai, priv, i) {
1296 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1297 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1298 }
1299
1300 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1301 remove_func[i](priv);
1302
1303 snd_soc_unregister_component(&pdev->dev);
1304 snd_soc_unregister_platform(&pdev->dev);
1305
1306 return ret;
1307 }
1308
1309 static int rsnd_suspend(struct device *dev)
1310 {
1311 struct rsnd_priv *priv = dev_get_drvdata(dev);
1312
1313 rsnd_adg_clk_disable(priv);
1314
1315 return 0;
1316 }
1317
1318 static int rsnd_resume(struct device *dev)
1319 {
1320 struct rsnd_priv *priv = dev_get_drvdata(dev);
1321
1322 rsnd_adg_clk_enable(priv);
1323
1324 return 0;
1325 }
1326
1327 static struct dev_pm_ops rsnd_pm_ops = {
1328 .suspend = rsnd_suspend,
1329 .resume = rsnd_resume,
1330 };
1331
1332 static struct platform_driver rsnd_driver = {
1333 .driver = {
1334 .name = "rcar_sound",
1335 .pm = &rsnd_pm_ops,
1336 .of_match_table = rsnd_of_match,
1337 },
1338 .probe = rsnd_probe,
1339 .remove = rsnd_remove,
1340 };
1341 module_platform_driver(rsnd_driver);
1342
1343 MODULE_LICENSE("GPL");
1344 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1345 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1346 MODULE_ALIAS("platform:rcar-pcm-audio");
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