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Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb...
[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 (*iterator)++;
367
368 return mod;
369 }
370
371 return NULL;
372 }
373
374 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
375 {
376 /* CAPTURE */
377 RSND_MOD_AUDMAPP,
378 RSND_MOD_AUDMA,
379 RSND_MOD_DVC,
380 RSND_MOD_MIX,
381 RSND_MOD_CTU,
382 RSND_MOD_CMD,
383 RSND_MOD_SRC,
384 RSND_MOD_SSIU,
385 RSND_MOD_SSIM3,
386 RSND_MOD_SSIM2,
387 RSND_MOD_SSIM1,
388 RSND_MOD_SSIP,
389 RSND_MOD_SSI,
390 }, {
391 /* PLAYBACK */
392 RSND_MOD_AUDMAPP,
393 RSND_MOD_AUDMA,
394 RSND_MOD_SSIM3,
395 RSND_MOD_SSIM2,
396 RSND_MOD_SSIM1,
397 RSND_MOD_SSIP,
398 RSND_MOD_SSI,
399 RSND_MOD_SSIU,
400 RSND_MOD_DVC,
401 RSND_MOD_MIX,
402 RSND_MOD_CTU,
403 RSND_MOD_CMD,
404 RSND_MOD_SRC,
405 },
406 };
407
408 static int rsnd_status_update(u32 *status,
409 int shift, int add, int timing)
410 {
411 u32 mask = 0xF << shift;
412 u8 val = (*status >> shift) & 0xF;
413 u8 next_val = (val + add) & 0xF;
414 int func_call = (val == timing);
415
416 if (next_val == 0xF) /* underflow case */
417 func_call = 0;
418 else
419 *status = (*status & ~mask) + (next_val << shift);
420
421 return func_call;
422 }
423
424 #define rsnd_dai_call(fn, io, param...) \
425 ({ \
426 struct rsnd_priv *priv = rsnd_io_to_priv(io); \
427 struct device *dev = rsnd_priv_to_dev(priv); \
428 struct rsnd_mod *mod; \
429 int is_play = rsnd_io_is_play(io); \
430 int ret = 0, i; \
431 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \
432 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \
433 int tmp = 0; \
434 u32 *status = mod->get_status(io, mod, types[i]); \
435 int func_call = rsnd_status_update(status, \
436 __rsnd_mod_shift_##fn, \
437 __rsnd_mod_add_##fn, \
438 __rsnd_mod_call_##fn); \
439 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
440 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \
441 (func_call && (mod)->ops->fn) ? #fn : ""); \
442 if (func_call && (mod)->ops->fn) \
443 tmp = (mod)->ops->fn(mod, io, param); \
444 if (tmp) \
445 dev_err(dev, "%s[%d] : %s error %d\n", \
446 rsnd_mod_name(mod), rsnd_mod_id(mod), \
447 #fn, tmp); \
448 ret |= tmp; \
449 } \
450 ret; \
451 })
452
453 int rsnd_dai_connect(struct rsnd_mod *mod,
454 struct rsnd_dai_stream *io,
455 enum rsnd_mod_type type)
456 {
457 struct rsnd_priv *priv;
458 struct device *dev;
459
460 if (!mod)
461 return -EIO;
462
463 if (io->mod[type] == mod)
464 return 0;
465
466 if (io->mod[type])
467 return -EINVAL;
468
469 priv = rsnd_mod_to_priv(mod);
470 dev = rsnd_priv_to_dev(priv);
471
472 io->mod[type] = mod;
473
474 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
475 rsnd_mod_name(mod), rsnd_mod_id(mod),
476 rsnd_io_is_play(io) ? "Playback" : "Capture");
477
478 return 0;
479 }
480
481 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
482 struct rsnd_dai_stream *io,
483 enum rsnd_mod_type type)
484 {
485 io->mod[type] = NULL;
486 }
487
488 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
489 {
490 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
491 return NULL;
492
493 return priv->rdai + id;
494 }
495
496 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
497 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
498 {
499 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
500
501 return rsnd_rdai_get(priv, dai->id);
502 }
503
504 /*
505 * rsnd_soc_dai functions
506 */
507 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
508 {
509 struct snd_pcm_substream *substream = io->substream;
510 struct snd_pcm_runtime *runtime = substream->runtime;
511 int pos = io->byte_pos + additional;
512
513 pos %= (runtime->periods * io->byte_per_period);
514
515 return pos;
516 }
517
518 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
519 {
520 io->byte_pos += byte;
521
522 if (io->byte_pos >= io->next_period_byte) {
523 struct snd_pcm_substream *substream = io->substream;
524 struct snd_pcm_runtime *runtime = substream->runtime;
525
526 io->period_pos++;
527 io->next_period_byte += io->byte_per_period;
528
529 if (io->period_pos >= runtime->periods) {
530 io->byte_pos = 0;
531 io->period_pos = 0;
532 io->next_period_byte = io->byte_per_period;
533 }
534
535 return true;
536 }
537
538 return false;
539 }
540
541 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
542 {
543 struct snd_pcm_substream *substream = io->substream;
544
545 /*
546 * this function should be called...
547 *
548 * - if rsnd_dai_pointer_update() returns true
549 * - without spin lock
550 */
551
552 snd_pcm_period_elapsed(substream);
553 }
554
555 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
556 struct snd_pcm_substream *substream)
557 {
558 struct snd_pcm_runtime *runtime = substream->runtime;
559
560 io->substream = substream;
561 io->byte_pos = 0;
562 io->period_pos = 0;
563 io->byte_per_period = runtime->period_size *
564 runtime->channels *
565 samples_to_bytes(runtime, 1);
566 io->next_period_byte = io->byte_per_period;
567 }
568
569 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
570 {
571 io->substream = NULL;
572 }
573
574 static
575 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
576 {
577 struct snd_soc_pcm_runtime *rtd = substream->private_data;
578
579 return rtd->cpu_dai;
580 }
581
582 static
583 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
584 struct snd_pcm_substream *substream)
585 {
586 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
587 return &rdai->playback;
588 else
589 return &rdai->capture;
590 }
591
592 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
593 struct snd_soc_dai *dai)
594 {
595 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
596 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
597 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
598 int ret;
599 unsigned long flags;
600
601 spin_lock_irqsave(&priv->lock, flags);
602
603 switch (cmd) {
604 case SNDRV_PCM_TRIGGER_START:
605 case SNDRV_PCM_TRIGGER_RESUME:
606 rsnd_dai_stream_init(io, substream);
607
608 ret = rsnd_dai_call(init, io, priv);
609 if (ret < 0)
610 goto dai_trigger_end;
611
612 ret = rsnd_dai_call(start, io, priv);
613 if (ret < 0)
614 goto dai_trigger_end;
615
616 ret = rsnd_dai_call(irq, io, priv, 1);
617 if (ret < 0)
618 goto dai_trigger_end;
619
620 break;
621 case SNDRV_PCM_TRIGGER_STOP:
622 case SNDRV_PCM_TRIGGER_SUSPEND:
623 ret = rsnd_dai_call(irq, io, priv, 0);
624
625 ret |= rsnd_dai_call(stop, io, priv);
626
627 ret |= rsnd_dai_call(quit, io, priv);
628
629 rsnd_dai_stream_quit(io);
630 break;
631 default:
632 ret = -EINVAL;
633 }
634
635 dai_trigger_end:
636 spin_unlock_irqrestore(&priv->lock, flags);
637
638 return ret;
639 }
640
641 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
642 {
643 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
644
645 /* set master/slave audio interface */
646 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
647 case SND_SOC_DAIFMT_CBM_CFM:
648 rdai->clk_master = 0;
649 break;
650 case SND_SOC_DAIFMT_CBS_CFS:
651 rdai->clk_master = 1; /* codec is slave, cpu is master */
652 break;
653 default:
654 return -EINVAL;
655 }
656
657 /* set format */
658 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
659 case SND_SOC_DAIFMT_I2S:
660 rdai->sys_delay = 0;
661 rdai->data_alignment = 0;
662 rdai->frm_clk_inv = 0;
663 break;
664 case SND_SOC_DAIFMT_LEFT_J:
665 rdai->sys_delay = 1;
666 rdai->data_alignment = 0;
667 rdai->frm_clk_inv = 1;
668 break;
669 case SND_SOC_DAIFMT_RIGHT_J:
670 rdai->sys_delay = 1;
671 rdai->data_alignment = 1;
672 rdai->frm_clk_inv = 1;
673 break;
674 }
675
676 /* set clock inversion */
677 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
678 case SND_SOC_DAIFMT_NB_IF:
679 rdai->bit_clk_inv = rdai->bit_clk_inv;
680 rdai->frm_clk_inv = !rdai->frm_clk_inv;
681 break;
682 case SND_SOC_DAIFMT_IB_NF:
683 rdai->bit_clk_inv = !rdai->bit_clk_inv;
684 rdai->frm_clk_inv = rdai->frm_clk_inv;
685 break;
686 case SND_SOC_DAIFMT_IB_IF:
687 rdai->bit_clk_inv = !rdai->bit_clk_inv;
688 rdai->frm_clk_inv = !rdai->frm_clk_inv;
689 break;
690 case SND_SOC_DAIFMT_NB_NF:
691 default:
692 break;
693 }
694
695 return 0;
696 }
697
698 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
699 u32 tx_mask, u32 rx_mask,
700 int slots, int slot_width)
701 {
702 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
703 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
704 struct device *dev = rsnd_priv_to_dev(priv);
705
706 switch (slots) {
707 case 6:
708 /* TDM Extend Mode */
709 rsnd_set_slot(rdai, slots, 1);
710 break;
711 default:
712 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
713 return -EINVAL;
714 }
715
716 return 0;
717 }
718
719 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
720 struct snd_soc_dai *dai)
721 {
722 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
723 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
724
725 /*
726 * call rsnd_dai_call without spinlock
727 */
728 return rsnd_dai_call(nolock_start, io, priv);
729 }
730
731 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
732 struct snd_soc_dai *dai)
733 {
734 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
735 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
736
737 /*
738 * call rsnd_dai_call without spinlock
739 */
740 rsnd_dai_call(nolock_stop, io, priv);
741 }
742
743 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
744 .startup = rsnd_soc_dai_startup,
745 .shutdown = rsnd_soc_dai_shutdown,
746 .trigger = rsnd_soc_dai_trigger,
747 .set_fmt = rsnd_soc_dai_set_fmt,
748 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
749 };
750
751 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
752 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
753 struct device_node *node,
754 struct device_node *playback,
755 struct device_node *capture)
756 {
757 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
758 struct device_node *np;
759 struct rsnd_mod *mod;
760 int i;
761
762 if (!node)
763 return;
764
765 i = 0;
766 for_each_child_of_node(node, np) {
767 mod = mod_get(priv, i);
768 if (np == playback)
769 rsnd_dai_connect(mod, &rdai->playback, mod->type);
770 if (np == capture)
771 rsnd_dai_connect(mod, &rdai->capture, mod->type);
772 i++;
773 }
774
775 of_node_put(node);
776 }
777
778 static int rsnd_dai_probe(struct rsnd_priv *priv)
779 {
780 struct device_node *dai_node;
781 struct device_node *dai_np;
782 struct device_node *playback, *capture;
783 struct rsnd_dai_stream *io_playback;
784 struct rsnd_dai_stream *io_capture;
785 struct snd_soc_dai_driver *rdrv, *drv;
786 struct rsnd_dai *rdai;
787 struct device *dev = rsnd_priv_to_dev(priv);
788 int nr, dai_i, io_i;
789 int ret;
790
791 dai_node = rsnd_dai_of_node(priv);
792 nr = of_get_child_count(dai_node);
793 if (!nr) {
794 ret = -EINVAL;
795 goto rsnd_dai_probe_done;
796 }
797
798 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
799 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
800 if (!rdrv || !rdai) {
801 ret = -ENOMEM;
802 goto rsnd_dai_probe_done;
803 }
804
805 priv->rdai_nr = nr;
806 priv->daidrv = rdrv;
807 priv->rdai = rdai;
808
809 /*
810 * parse all dai
811 */
812 dai_i = 0;
813 for_each_child_of_node(dai_node, dai_np) {
814 rdai = rsnd_rdai_get(priv, dai_i);
815 drv = rdrv + dai_i;
816 io_playback = &rdai->playback;
817 io_capture = &rdai->capture;
818
819 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
820
821 rdai->priv = priv;
822 drv->name = rdai->name;
823 drv->ops = &rsnd_soc_dai_ops;
824
825 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
826 "DAI%d Playback", dai_i);
827 drv->playback.rates = RSND_RATES;
828 drv->playback.formats = RSND_FMTS;
829 drv->playback.channels_min = 2;
830 drv->playback.channels_max = 6;
831 drv->playback.stream_name = rdai->playback.name;
832
833 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
834 "DAI%d Capture", dai_i);
835 drv->capture.rates = RSND_RATES;
836 drv->capture.formats = RSND_FMTS;
837 drv->capture.channels_min = 2;
838 drv->capture.channels_max = 6;
839 drv->capture.stream_name = rdai->capture.name;
840
841 rdai->playback.rdai = rdai;
842 rdai->capture.rdai = rdai;
843 rsnd_set_slot(rdai, 2, 1); /* default */
844
845 for (io_i = 0;; io_i++) {
846 playback = of_parse_phandle(dai_np, "playback", io_i);
847 capture = of_parse_phandle(dai_np, "capture", io_i);
848
849 if (!playback && !capture)
850 break;
851
852 rsnd_parse_connect_ssi(rdai, playback, capture);
853 rsnd_parse_connect_src(rdai, playback, capture);
854 rsnd_parse_connect_ctu(rdai, playback, capture);
855 rsnd_parse_connect_mix(rdai, playback, capture);
856 rsnd_parse_connect_dvc(rdai, playback, capture);
857
858 of_node_put(playback);
859 of_node_put(capture);
860 }
861
862 dai_i++;
863
864 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
865 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
866 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
867 }
868
869 ret = 0;
870
871 rsnd_dai_probe_done:
872 of_node_put(dai_node);
873
874 return ret;
875 }
876
877 /*
878 * pcm ops
879 */
880 static struct snd_pcm_hardware rsnd_pcm_hardware = {
881 .info = SNDRV_PCM_INFO_INTERLEAVED |
882 SNDRV_PCM_INFO_MMAP |
883 SNDRV_PCM_INFO_MMAP_VALID,
884 .buffer_bytes_max = 64 * 1024,
885 .period_bytes_min = 32,
886 .period_bytes_max = 8192,
887 .periods_min = 1,
888 .periods_max = 32,
889 .fifo_size = 256,
890 };
891
892 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
893 {
894 struct snd_pcm_runtime *runtime = substream->runtime;
895 int ret = 0;
896
897 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
898
899 ret = snd_pcm_hw_constraint_integer(runtime,
900 SNDRV_PCM_HW_PARAM_PERIODS);
901
902 return ret;
903 }
904
905 static int rsnd_hw_params(struct snd_pcm_substream *substream,
906 struct snd_pcm_hw_params *hw_params)
907 {
908 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
909 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
910 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
911 int ret;
912
913 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
914 if (ret)
915 return ret;
916
917 return snd_pcm_lib_malloc_pages(substream,
918 params_buffer_bytes(hw_params));
919 }
920
921 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
922 {
923 struct snd_pcm_runtime *runtime = substream->runtime;
924 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
925 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
926 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
927
928 return bytes_to_frames(runtime, io->byte_pos);
929 }
930
931 static struct snd_pcm_ops rsnd_pcm_ops = {
932 .open = rsnd_pcm_open,
933 .ioctl = snd_pcm_lib_ioctl,
934 .hw_params = rsnd_hw_params,
935 .hw_free = snd_pcm_lib_free_pages,
936 .pointer = rsnd_pointer,
937 };
938
939 /*
940 * snd_kcontrol
941 */
942 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
943 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
944 struct snd_ctl_elem_info *uinfo)
945 {
946 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
947
948 if (cfg->texts) {
949 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
950 uinfo->count = cfg->size;
951 uinfo->value.enumerated.items = cfg->max;
952 if (uinfo->value.enumerated.item >= cfg->max)
953 uinfo->value.enumerated.item = cfg->max - 1;
954 strlcpy(uinfo->value.enumerated.name,
955 cfg->texts[uinfo->value.enumerated.item],
956 sizeof(uinfo->value.enumerated.name));
957 } else {
958 uinfo->count = cfg->size;
959 uinfo->value.integer.min = 0;
960 uinfo->value.integer.max = cfg->max;
961 uinfo->type = (cfg->max == 1) ?
962 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
963 SNDRV_CTL_ELEM_TYPE_INTEGER;
964 }
965
966 return 0;
967 }
968
969 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
970 struct snd_ctl_elem_value *uc)
971 {
972 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
973 int i;
974
975 for (i = 0; i < cfg->size; i++)
976 if (cfg->texts)
977 uc->value.enumerated.item[i] = cfg->val[i];
978 else
979 uc->value.integer.value[i] = cfg->val[i];
980
981 return 0;
982 }
983
984 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
985 struct snd_ctl_elem_value *uc)
986 {
987 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
988 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
989 int i, change = 0;
990
991 for (i = 0; i < cfg->size; i++) {
992 if (cfg->texts) {
993 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
994 cfg->val[i] = uc->value.enumerated.item[i];
995 } else {
996 change |= (uc->value.integer.value[i] != cfg->val[i]);
997 cfg->val[i] = uc->value.integer.value[i];
998 }
999 }
1000
1001 if (change && cfg->update)
1002 cfg->update(cfg->io, mod);
1003
1004 return change;
1005 }
1006
1007 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
1008 struct rsnd_dai_stream *io,
1009 struct snd_soc_pcm_runtime *rtd,
1010 const unsigned char *name,
1011 struct rsnd_kctrl_cfg *cfg,
1012 void (*update)(struct rsnd_dai_stream *io,
1013 struct rsnd_mod *mod))
1014 {
1015 struct snd_card *card = rtd->card->snd_card;
1016 struct snd_kcontrol *kctrl;
1017 struct snd_kcontrol_new knew = {
1018 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1019 .name = name,
1020 .info = rsnd_kctrl_info,
1021 .index = rtd->num,
1022 .get = rsnd_kctrl_get,
1023 .put = rsnd_kctrl_put,
1024 .private_value = (unsigned long)cfg,
1025 };
1026 int ret;
1027
1028 kctrl = snd_ctl_new1(&knew, mod);
1029 if (!kctrl)
1030 return -ENOMEM;
1031
1032 ret = snd_ctl_add(card, kctrl);
1033 if (ret < 0) {
1034 snd_ctl_free_one(kctrl);
1035 return ret;
1036 }
1037
1038 cfg->update = update;
1039 cfg->card = card;
1040 cfg->kctrl = kctrl;
1041 cfg->io = io;
1042
1043 return 0;
1044 }
1045
1046 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
1047 {
1048 if (cfg->card && cfg->kctrl)
1049 snd_ctl_remove(cfg->card, cfg->kctrl);
1050
1051 cfg->card = NULL;
1052 cfg->kctrl = NULL;
1053 }
1054
1055 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
1056 struct rsnd_dai_stream *io,
1057 struct snd_soc_pcm_runtime *rtd,
1058 const unsigned char *name,
1059 void (*update)(struct rsnd_dai_stream *io,
1060 struct rsnd_mod *mod),
1061 struct rsnd_kctrl_cfg_m *_cfg,
1062 int ch_size,
1063 u32 max)
1064 {
1065 if (ch_size > RSND_MAX_CHANNELS)
1066 return -EINVAL;
1067
1068 _cfg->cfg.max = max;
1069 _cfg->cfg.size = ch_size;
1070 _cfg->cfg.val = _cfg->val;
1071 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1072 }
1073
1074 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1075 struct rsnd_dai_stream *io,
1076 struct snd_soc_pcm_runtime *rtd,
1077 const unsigned char *name,
1078 void (*update)(struct rsnd_dai_stream *io,
1079 struct rsnd_mod *mod),
1080 struct rsnd_kctrl_cfg_s *_cfg,
1081 u32 max)
1082 {
1083 _cfg->cfg.max = max;
1084 _cfg->cfg.size = 1;
1085 _cfg->cfg.val = &_cfg->val;
1086 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1087 }
1088
1089 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1090 struct rsnd_dai_stream *io,
1091 struct snd_soc_pcm_runtime *rtd,
1092 const unsigned char *name,
1093 struct rsnd_kctrl_cfg_s *_cfg,
1094 void (*update)(struct rsnd_dai_stream *io,
1095 struct rsnd_mod *mod),
1096 const char * const *texts,
1097 u32 max)
1098 {
1099 _cfg->cfg.max = max;
1100 _cfg->cfg.size = 1;
1101 _cfg->cfg.val = &_cfg->val;
1102 _cfg->cfg.texts = texts;
1103 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1104 }
1105
1106 /*
1107 * snd_soc_platform
1108 */
1109
1110 #define PREALLOC_BUFFER (32 * 1024)
1111 #define PREALLOC_BUFFER_MAX (32 * 1024)
1112
1113 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1114 {
1115 struct snd_soc_dai *dai = rtd->cpu_dai;
1116 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1117 int ret;
1118
1119 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1120 if (ret)
1121 return ret;
1122
1123 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1124 if (ret)
1125 return ret;
1126
1127 return snd_pcm_lib_preallocate_pages_for_all(
1128 rtd->pcm,
1129 SNDRV_DMA_TYPE_CONTINUOUS,
1130 snd_dma_continuous_data(GFP_KERNEL),
1131 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1132 }
1133
1134 static struct snd_soc_platform_driver rsnd_soc_platform = {
1135 .ops = &rsnd_pcm_ops,
1136 .pcm_new = rsnd_pcm_new,
1137 };
1138
1139 static const struct snd_soc_component_driver rsnd_soc_component = {
1140 .name = "rsnd",
1141 };
1142
1143 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1144 struct rsnd_dai_stream *io)
1145 {
1146 int ret;
1147
1148 ret = rsnd_dai_call(probe, io, priv);
1149 if (ret == -EAGAIN) {
1150 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1151 struct rsnd_mod *mod;
1152 int i;
1153
1154 /*
1155 * Fallback to PIO mode
1156 */
1157
1158 /*
1159 * call "remove" for SSI/SRC/DVC
1160 * SSI will be switch to PIO mode if it was DMA mode
1161 * see
1162 * rsnd_dma_init()
1163 * rsnd_ssi_fallback()
1164 */
1165 rsnd_dai_call(remove, io, priv);
1166
1167 /*
1168 * remove all mod from io
1169 * and, re connect ssi
1170 */
1171 for_each_rsnd_mod(i, mod, io)
1172 rsnd_dai_disconnect(mod, io, i);
1173 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1174
1175 /*
1176 * fallback
1177 */
1178 rsnd_dai_call(fallback, io, priv);
1179
1180 /*
1181 * retry to "probe".
1182 * DAI has SSI which is PIO mode only now.
1183 */
1184 ret = rsnd_dai_call(probe, io, priv);
1185 }
1186
1187 return ret;
1188 }
1189
1190 /*
1191 * rsnd probe
1192 */
1193 static int rsnd_probe(struct platform_device *pdev)
1194 {
1195 struct rsnd_priv *priv;
1196 struct device *dev = &pdev->dev;
1197 struct rsnd_dai *rdai;
1198 int (*probe_func[])(struct rsnd_priv *priv) = {
1199 rsnd_gen_probe,
1200 rsnd_dma_probe,
1201 rsnd_ssi_probe,
1202 rsnd_ssiu_probe,
1203 rsnd_src_probe,
1204 rsnd_ctu_probe,
1205 rsnd_mix_probe,
1206 rsnd_dvc_probe,
1207 rsnd_cmd_probe,
1208 rsnd_adg_probe,
1209 rsnd_dai_probe,
1210 };
1211 int ret, i;
1212
1213 /*
1214 * init priv data
1215 */
1216 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1217 if (!priv) {
1218 dev_err(dev, "priv allocate failed\n");
1219 return -ENODEV;
1220 }
1221
1222 priv->pdev = pdev;
1223 priv->flags = (unsigned long)of_device_get_match_data(dev);
1224 spin_lock_init(&priv->lock);
1225
1226 /*
1227 * init each module
1228 */
1229 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1230 ret = probe_func[i](priv);
1231 if (ret)
1232 return ret;
1233 }
1234
1235 for_each_rsnd_dai(rdai, priv, i) {
1236 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1237 if (ret)
1238 goto exit_snd_probe;
1239
1240 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1241 if (ret)
1242 goto exit_snd_probe;
1243 }
1244
1245 dev_set_drvdata(dev, priv);
1246
1247 /*
1248 * asoc register
1249 */
1250 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1251 if (ret < 0) {
1252 dev_err(dev, "cannot snd soc register\n");
1253 return ret;
1254 }
1255
1256 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1257 priv->daidrv, rsnd_rdai_nr(priv));
1258 if (ret < 0) {
1259 dev_err(dev, "cannot snd dai register\n");
1260 goto exit_snd_soc;
1261 }
1262
1263 pm_runtime_enable(dev);
1264
1265 dev_info(dev, "probed\n");
1266 return ret;
1267
1268 exit_snd_soc:
1269 snd_soc_unregister_platform(dev);
1270 exit_snd_probe:
1271 for_each_rsnd_dai(rdai, priv, i) {
1272 rsnd_dai_call(remove, &rdai->playback, priv);
1273 rsnd_dai_call(remove, &rdai->capture, priv);
1274 }
1275
1276 return ret;
1277 }
1278
1279 static int rsnd_remove(struct platform_device *pdev)
1280 {
1281 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1282 struct rsnd_dai *rdai;
1283 void (*remove_func[])(struct rsnd_priv *priv) = {
1284 rsnd_ssi_remove,
1285 rsnd_ssiu_remove,
1286 rsnd_src_remove,
1287 rsnd_ctu_remove,
1288 rsnd_mix_remove,
1289 rsnd_dvc_remove,
1290 rsnd_cmd_remove,
1291 rsnd_adg_remove,
1292 };
1293 int ret = 0, i;
1294
1295 pm_runtime_disable(&pdev->dev);
1296
1297 for_each_rsnd_dai(rdai, priv, i) {
1298 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1299 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1300 }
1301
1302 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1303 remove_func[i](priv);
1304
1305 snd_soc_unregister_component(&pdev->dev);
1306 snd_soc_unregister_platform(&pdev->dev);
1307
1308 return ret;
1309 }
1310
1311 static int rsnd_suspend(struct device *dev)
1312 {
1313 struct rsnd_priv *priv = dev_get_drvdata(dev);
1314
1315 rsnd_adg_clk_disable(priv);
1316
1317 return 0;
1318 }
1319
1320 static int rsnd_resume(struct device *dev)
1321 {
1322 struct rsnd_priv *priv = dev_get_drvdata(dev);
1323
1324 rsnd_adg_clk_enable(priv);
1325
1326 return 0;
1327 }
1328
1329 static struct dev_pm_ops rsnd_pm_ops = {
1330 .suspend = rsnd_suspend,
1331 .resume = rsnd_resume,
1332 };
1333
1334 static struct platform_driver rsnd_driver = {
1335 .driver = {
1336 .name = "rcar_sound",
1337 .pm = &rsnd_pm_ops,
1338 .of_match_table = rsnd_of_match,
1339 },
1340 .probe = rsnd_probe,
1341 .remove = rsnd_remove,
1342 };
1343 module_platform_driver(rsnd_driver);
1344
1345 MODULE_LICENSE("GPL");
1346 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1347 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1348 MODULE_ALIAS("platform:rcar-pcm-audio");
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