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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / sound / soc / sh / rcar / core.c
blob3351a701c60ee3525b1b441908d7f8bcb628e8f0
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 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
114 {
115 if (mod->type != type) {
116 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
117 struct device *dev = rsnd_priv_to_dev(priv);
118
119 dev_warn(dev, "%s[%d] is not your expected module\n",
120 rsnd_mod_name(mod), rsnd_mod_id(mod));
121 }
122 }
123
124 char *rsnd_mod_name(struct rsnd_mod *mod)
125 {
126 if (!mod || !mod->ops)
127 return "unknown";
128
129 return mod->ops->name;
130 }
131
132 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
133 struct rsnd_mod *mod)
134 {
135 if (!mod || !mod->ops || !mod->ops->dma_req)
136 return NULL;
137
138 return mod->ops->dma_req(io, mod);
139 }
140
141 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
142 struct rsnd_mod *mod,
143 enum rsnd_mod_type type)
144 {
145 return &mod->status;
146 }
147
148 int rsnd_mod_init(struct rsnd_priv *priv,
149 struct rsnd_mod *mod,
150 struct rsnd_mod_ops *ops,
151 struct clk *clk,
152 u32* (*get_status)(struct rsnd_dai_stream *io,
153 struct rsnd_mod *mod,
154 enum rsnd_mod_type type),
155 enum rsnd_mod_type type,
156 int id)
157 {
158 int ret = clk_prepare(clk);
159
160 if (ret)
161 return ret;
162
163 mod->id = id;
164 mod->ops = ops;
165 mod->type = type;
166 mod->clk = clk;
167 mod->priv = priv;
168 mod->get_status = get_status;
169
170 return ret;
171 }
172
173 void rsnd_mod_quit(struct rsnd_mod *mod)
174 {
175 if (mod->clk)
176 clk_unprepare(mod->clk);
177 mod->clk = NULL;
178 }
179
180 void rsnd_mod_interrupt(struct rsnd_mod *mod,
181 void (*callback)(struct rsnd_mod *mod,
182 struct rsnd_dai_stream *io))
183 {
184 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
185 struct rsnd_dai_stream *io;
186 struct rsnd_dai *rdai;
187 int i;
188
189 for_each_rsnd_dai(rdai, priv, i) {
190 io = &rdai->playback;
191 if (mod == io->mod[mod->type])
192 callback(mod, io);
193
194 io = &rdai->capture;
195 if (mod == io->mod[mod->type])
196 callback(mod, io);
197 }
198 }
199
200 int rsnd_io_is_working(struct rsnd_dai_stream *io)
201 {
202 /* see rsnd_dai_stream_init/quit() */
203 return !!io->substream;
204 }
205
206 void rsnd_set_slot(struct rsnd_dai *rdai,
207 int slots, int num)
208 {
209 rdai->slots = slots;
210 rdai->slots_num = num;
211 }
212
213 int rsnd_get_slot(struct rsnd_dai_stream *io)
214 {
215 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
216
217 return rdai->slots;
218 }
219
220 int rsnd_get_slot_num(struct rsnd_dai_stream *io)
221 {
222 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
223
224 return rdai->slots_num;
225 }
226
227 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io)
228 {
229 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
230
231 return runtime->channels;
232 }
233
234 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
235 {
236 int chan = rsnd_runtime_channel_original(io);
237 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
238
239 if (ctu_mod) {
240 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
241
242 if (converted_chan)
243 return converted_chan;
244 }
245
246 return chan;
247 }
248
249 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
250 {
251 int chan = rsnd_io_is_play(io) ?
252 rsnd_runtime_channel_after_ctu(io) :
253 rsnd_runtime_channel_original(io);
254
255 /* Use Multi SSI */
256 if (rsnd_runtime_is_ssi_multi(io))
257 chan /= rsnd_get_slot_num(io);
258
259 /* TDM Extend Mode needs 8ch */
260 if (chan == 6)
261 chan = 8;
262
263 return chan;
264 }
265
266 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
267 {
268 int slots = rsnd_get_slot_num(io);
269 int chan = rsnd_io_is_play(io) ?
270 rsnd_runtime_channel_after_ctu(io) :
271 rsnd_runtime_channel_original(io);
272
273 return (chan >= 6) && (slots > 1);
274 }
275
276 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
277 {
278 return rsnd_runtime_channel_for_ssi(io) >= 6;
279 }
280
281 /*
282 * ADINR function
283 */
284 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
285 {
286 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
287 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
288 struct device *dev = rsnd_priv_to_dev(priv);
289
290 switch (runtime->sample_bits) {
291 case 16:
292 return 8 << 16;
293 case 32:
294 return 0 << 16;
295 }
296
297 dev_warn(dev, "not supported sample bits\n");
298
299 return 0;
300 }
301
302 /*
303 * DALIGN function
304 */
305 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
306 {
307 struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
308 struct rsnd_mod *target;
309 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
310 u32 val = 0x76543210;
311 u32 mask = ~0;
312
313 if (rsnd_io_is_play(io)) {
314 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
315
316 target = src ? src : ssi;
317 } else {
318 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
319
320 target = cmd ? cmd : ssi;
321 }
322
323 mask <<= runtime->channels * 4;
324 val = val & mask;
325
326 switch (runtime->sample_bits) {
327 case 16:
328 val |= 0x67452301 & ~mask;
329 break;
330 case 32:
331 val |= 0x76543210 & ~mask;
332 break;
333 }
334
335 /*
336 * exchange channeles on SRC if possible,
337 * otherwise, R/L volume settings on DVC
338 * changes inverted channels
339 */
340 if (mod == target)
341 return val;
342 else
343 return 0x76543210;
344 }
345
346 /*
347 * rsnd_dai functions
348 */
349 #define rsnd_mod_call(idx, io, func, param...) \
350 ({ \
351 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
352 struct rsnd_mod *mod = (io)->mod[idx]; \
353 struct device *dev = rsnd_priv_to_dev(priv); \
354 u32 *status = mod->get_status(io, mod, idx); \
355 u32 mask = 0xF << __rsnd_mod_shift_##func; \
356 u8 val = (*status >> __rsnd_mod_shift_##func) & 0xF; \
357 u8 add = ((val + __rsnd_mod_add_##func) & 0xF); \
358 int ret = 0; \
359 int call = (val == __rsnd_mod_call_##func) && (mod)->ops->func; \
360 if (add == 0xF) \
361 call = 0; \
362 else \
363 *status = (*status & ~mask) + \
364 (add << __rsnd_mod_shift_##func); \
365 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
366 rsnd_mod_name(mod), rsnd_mod_id(mod), \
367 *status, call ? #func : ""); \
368 if (call) \
369 ret = (mod)->ops->func(mod, io, param); \
370 if (ret) \
371 dev_dbg(dev, "%s[%d] : rsnd_mod_call error %d\n", \
372 rsnd_mod_name(mod), rsnd_mod_id(mod), ret); \
373 ret; \
374 })
375
376 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
377 {
378 /* CAPTURE */
379 RSND_MOD_AUDMAPP,
380 RSND_MOD_AUDMA,
381 RSND_MOD_DVC,
382 RSND_MOD_MIX,
383 RSND_MOD_CTU,
384 RSND_MOD_CMD,
385 RSND_MOD_SRC,
386 RSND_MOD_SSIU,
387 RSND_MOD_SSIM3,
388 RSND_MOD_SSIM2,
389 RSND_MOD_SSIM1,
390 RSND_MOD_SSIP,
391 RSND_MOD_SSI,
392 }, {
393 /* PLAYBACK */
394 RSND_MOD_AUDMAPP,
395 RSND_MOD_AUDMA,
396 RSND_MOD_SSIM3,
397 RSND_MOD_SSIM2,
398 RSND_MOD_SSIM1,
399 RSND_MOD_SSIP,
400 RSND_MOD_SSI,
401 RSND_MOD_SSIU,
402 RSND_MOD_DVC,
403 RSND_MOD_MIX,
404 RSND_MOD_CTU,
405 RSND_MOD_CMD,
406 RSND_MOD_SRC,
407 },
408 };
409
410 #define rsnd_dai_call(fn, io, param...) \
411 ({ \
412 struct rsnd_mod *mod; \
413 int type, is_play = rsnd_io_is_play(io); \
414 int ret = 0, i; \
415 for (i = 0; i < RSND_MOD_MAX; i++) { \
416 type = rsnd_mod_sequence[is_play][i]; \
417 mod = (io)->mod[type]; \
418 if (!mod) \
419 continue; \
420 ret |= rsnd_mod_call(type, io, fn, param); \
421 } \
422 ret; \
423 })
424
425 int rsnd_dai_connect(struct rsnd_mod *mod,
426 struct rsnd_dai_stream *io,
427 enum rsnd_mod_type type)
428 {
429 struct rsnd_priv *priv;
430 struct device *dev;
431
432 if (!mod)
433 return -EIO;
434
435 if (io->mod[type] == mod)
436 return 0;
437
438 if (io->mod[type])
439 return -EINVAL;
440
441 priv = rsnd_mod_to_priv(mod);
442 dev = rsnd_priv_to_dev(priv);
443
444 io->mod[type] = mod;
445
446 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
447 rsnd_mod_name(mod), rsnd_mod_id(mod),
448 rsnd_io_is_play(io) ? "Playback" : "Capture");
449
450 return 0;
451 }
452
453 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
454 struct rsnd_dai_stream *io,
455 enum rsnd_mod_type type)
456 {
457 io->mod[type] = NULL;
458 }
459
460 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
461 {
462 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
463 return NULL;
464
465 return priv->rdai + id;
466 }
467
468 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
469 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
470 {
471 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
472
473 return rsnd_rdai_get(priv, dai->id);
474 }
475
476 /*
477 * rsnd_soc_dai functions
478 */
479 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
480 {
481 struct snd_pcm_substream *substream = io->substream;
482 struct snd_pcm_runtime *runtime = substream->runtime;
483 int pos = io->byte_pos + additional;
484
485 pos %= (runtime->periods * io->byte_per_period);
486
487 return pos;
488 }
489
490 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
491 {
492 io->byte_pos += byte;
493
494 if (io->byte_pos >= io->next_period_byte) {
495 struct snd_pcm_substream *substream = io->substream;
496 struct snd_pcm_runtime *runtime = substream->runtime;
497
498 io->period_pos++;
499 io->next_period_byte += io->byte_per_period;
500
501 if (io->period_pos >= runtime->periods) {
502 io->byte_pos = 0;
503 io->period_pos = 0;
504 io->next_period_byte = io->byte_per_period;
505 }
506
507 return true;
508 }
509
510 return false;
511 }
512
513 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
514 {
515 struct snd_pcm_substream *substream = io->substream;
516
517 /*
518 * this function should be called...
519 *
520 * - if rsnd_dai_pointer_update() returns true
521 * - without spin lock
522 */
523
524 snd_pcm_period_elapsed(substream);
525 }
526
527 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
528 struct snd_pcm_substream *substream)
529 {
530 struct snd_pcm_runtime *runtime = substream->runtime;
531
532 io->substream = substream;
533 io->byte_pos = 0;
534 io->period_pos = 0;
535 io->byte_per_period = runtime->period_size *
536 runtime->channels *
537 samples_to_bytes(runtime, 1);
538 io->next_period_byte = io->byte_per_period;
539 }
540
541 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
542 {
543 io->substream = NULL;
544 }
545
546 static
547 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
548 {
549 struct snd_soc_pcm_runtime *rtd = substream->private_data;
550
551 return rtd->cpu_dai;
552 }
553
554 static
555 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
556 struct snd_pcm_substream *substream)
557 {
558 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
559 return &rdai->playback;
560 else
561 return &rdai->capture;
562 }
563
564 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
565 struct snd_soc_dai *dai)
566 {
567 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
568 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
569 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
570 int ret;
571 unsigned long flags;
572
573 spin_lock_irqsave(&priv->lock, flags);
574
575 switch (cmd) {
576 case SNDRV_PCM_TRIGGER_START:
577 rsnd_dai_stream_init(io, substream);
578
579 ret = rsnd_dai_call(init, io, priv);
580 if (ret < 0)
581 goto dai_trigger_end;
582
583 ret = rsnd_dai_call(start, io, priv);
584 if (ret < 0)
585 goto dai_trigger_end;
586
587 ret = rsnd_dai_call(irq, io, priv, 1);
588 if (ret < 0)
589 goto dai_trigger_end;
590
591 break;
592 case SNDRV_PCM_TRIGGER_STOP:
593 ret = rsnd_dai_call(irq, io, priv, 0);
594
595 ret |= rsnd_dai_call(stop, io, priv);
596
597 ret |= rsnd_dai_call(quit, io, priv);
598
599 rsnd_dai_stream_quit(io);
600 break;
601 default:
602 ret = -EINVAL;
603 }
604
605 dai_trigger_end:
606 spin_unlock_irqrestore(&priv->lock, flags);
607
608 return ret;
609 }
610
611 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
612 {
613 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
614
615 /* set master/slave audio interface */
616 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
617 case SND_SOC_DAIFMT_CBM_CFM:
618 rdai->clk_master = 0;
619 break;
620 case SND_SOC_DAIFMT_CBS_CFS:
621 rdai->clk_master = 1; /* codec is slave, cpu is master */
622 break;
623 default:
624 return -EINVAL;
625 }
626
627 /* set format */
628 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
629 case SND_SOC_DAIFMT_I2S:
630 rdai->sys_delay = 0;
631 rdai->data_alignment = 0;
632 rdai->frm_clk_inv = 0;
633 break;
634 case SND_SOC_DAIFMT_LEFT_J:
635 rdai->sys_delay = 1;
636 rdai->data_alignment = 0;
637 rdai->frm_clk_inv = 1;
638 break;
639 case SND_SOC_DAIFMT_RIGHT_J:
640 rdai->sys_delay = 1;
641 rdai->data_alignment = 1;
642 rdai->frm_clk_inv = 1;
643 break;
644 }
645
646 /* set clock inversion */
647 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
648 case SND_SOC_DAIFMT_NB_IF:
649 rdai->bit_clk_inv = rdai->bit_clk_inv;
650 rdai->frm_clk_inv = !rdai->frm_clk_inv;
651 break;
652 case SND_SOC_DAIFMT_IB_NF:
653 rdai->bit_clk_inv = !rdai->bit_clk_inv;
654 rdai->frm_clk_inv = rdai->frm_clk_inv;
655 break;
656 case SND_SOC_DAIFMT_IB_IF:
657 rdai->bit_clk_inv = !rdai->bit_clk_inv;
658 rdai->frm_clk_inv = !rdai->frm_clk_inv;
659 break;
660 case SND_SOC_DAIFMT_NB_NF:
661 default:
662 break;
663 }
664
665 return 0;
666 }
667
668 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
669 u32 tx_mask, u32 rx_mask,
670 int slots, int slot_width)
671 {
672 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
673 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
674 struct device *dev = rsnd_priv_to_dev(priv);
675
676 switch (slots) {
677 case 6:
678 /* TDM Extend Mode */
679 rsnd_set_slot(rdai, slots, 1);
680 break;
681 default:
682 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
683 return -EINVAL;
684 }
685
686 return 0;
687 }
688
689 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
690 .trigger = rsnd_soc_dai_trigger,
691 .set_fmt = rsnd_soc_dai_set_fmt,
692 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
693 };
694
695 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
696 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
697 struct device_node *node,
698 struct device_node *playback,
699 struct device_node *capture)
700 {
701 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
702 struct device_node *np;
703 struct rsnd_mod *mod;
704 int i;
705
706 if (!node)
707 return;
708
709 i = 0;
710 for_each_child_of_node(node, np) {
711 mod = mod_get(priv, i);
712 if (np == playback)
713 rsnd_dai_connect(mod, &rdai->playback, mod->type);
714 if (np == capture)
715 rsnd_dai_connect(mod, &rdai->capture, mod->type);
716 i++;
717 }
718
719 of_node_put(node);
720 }
721
722 static int rsnd_dai_probe(struct rsnd_priv *priv)
723 {
724 struct device_node *dai_node;
725 struct device_node *dai_np;
726 struct device_node *playback, *capture;
727 struct rsnd_dai_stream *io_playback;
728 struct rsnd_dai_stream *io_capture;
729 struct snd_soc_dai_driver *rdrv, *drv;
730 struct rsnd_dai *rdai;
731 struct device *dev = rsnd_priv_to_dev(priv);
732 int nr, dai_i, io_i;
733 int ret;
734
735 dai_node = rsnd_dai_of_node(priv);
736 nr = of_get_child_count(dai_node);
737 if (!nr) {
738 ret = -EINVAL;
739 goto rsnd_dai_probe_done;
740 }
741
742 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
743 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
744 if (!rdrv || !rdai) {
745 ret = -ENOMEM;
746 goto rsnd_dai_probe_done;
747 }
748
749 priv->rdai_nr = nr;
750 priv->daidrv = rdrv;
751 priv->rdai = rdai;
752
753 /*
754 * parse all dai
755 */
756 dai_i = 0;
757 for_each_child_of_node(dai_node, dai_np) {
758 rdai = rsnd_rdai_get(priv, dai_i);
759 drv = rdrv + dai_i;
760 io_playback = &rdai->playback;
761 io_capture = &rdai->capture;
762
763 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
764
765 rdai->priv = priv;
766 drv->name = rdai->name;
767 drv->ops = &rsnd_soc_dai_ops;
768
769 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
770 "DAI%d Playback", dai_i);
771 drv->playback.rates = RSND_RATES;
772 drv->playback.formats = RSND_FMTS;
773 drv->playback.channels_min = 2;
774 drv->playback.channels_max = 6;
775 drv->playback.stream_name = rdai->playback.name;
776
777 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
778 "DAI%d Capture", dai_i);
779 drv->capture.rates = RSND_RATES;
780 drv->capture.formats = RSND_FMTS;
781 drv->capture.channels_min = 2;
782 drv->capture.channels_max = 6;
783 drv->capture.stream_name = rdai->capture.name;
784
785 rdai->playback.rdai = rdai;
786 rdai->capture.rdai = rdai;
787 rsnd_set_slot(rdai, 2, 1); /* default */
788
789 for (io_i = 0;; io_i++) {
790 playback = of_parse_phandle(dai_np, "playback", io_i);
791 capture = of_parse_phandle(dai_np, "capture", io_i);
792
793 if (!playback && !capture)
794 break;
795
796 rsnd_parse_connect_ssi(rdai, playback, capture);
797 rsnd_parse_connect_src(rdai, playback, capture);
798 rsnd_parse_connect_ctu(rdai, playback, capture);
799 rsnd_parse_connect_mix(rdai, playback, capture);
800 rsnd_parse_connect_dvc(rdai, playback, capture);
801
802 of_node_put(playback);
803 of_node_put(capture);
804 }
805
806 dai_i++;
807
808 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
809 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
810 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
811 }
812
813 ret = 0;
814
815 rsnd_dai_probe_done:
816 of_node_put(dai_node);
817
818 return ret;
819 }
820
821 /*
822 * pcm ops
823 */
824 static struct snd_pcm_hardware rsnd_pcm_hardware = {
825 .info = SNDRV_PCM_INFO_INTERLEAVED |
826 SNDRV_PCM_INFO_MMAP |
827 SNDRV_PCM_INFO_MMAP_VALID,
828 .buffer_bytes_max = 64 * 1024,
829 .period_bytes_min = 32,
830 .period_bytes_max = 8192,
831 .periods_min = 1,
832 .periods_max = 32,
833 .fifo_size = 256,
834 };
835
836 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
837 {
838 struct snd_pcm_runtime *runtime = substream->runtime;
839 int ret = 0;
840
841 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
842
843 ret = snd_pcm_hw_constraint_integer(runtime,
844 SNDRV_PCM_HW_PARAM_PERIODS);
845
846 return ret;
847 }
848
849 static int rsnd_hw_params(struct snd_pcm_substream *substream,
850 struct snd_pcm_hw_params *hw_params)
851 {
852 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
853 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
854 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
855 int ret;
856
857 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
858 if (ret)
859 return ret;
860
861 return snd_pcm_lib_malloc_pages(substream,
862 params_buffer_bytes(hw_params));
863 }
864
865 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
866 {
867 struct snd_pcm_runtime *runtime = substream->runtime;
868 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
869 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
870 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
871
872 return bytes_to_frames(runtime, io->byte_pos);
873 }
874
875 static struct snd_pcm_ops rsnd_pcm_ops = {
876 .open = rsnd_pcm_open,
877 .ioctl = snd_pcm_lib_ioctl,
878 .hw_params = rsnd_hw_params,
879 .hw_free = snd_pcm_lib_free_pages,
880 .pointer = rsnd_pointer,
881 };
882
883 /*
884 * snd_kcontrol
885 */
886 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
887 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
888 struct snd_ctl_elem_info *uinfo)
889 {
890 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
891
892 if (cfg->texts) {
893 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
894 uinfo->count = cfg->size;
895 uinfo->value.enumerated.items = cfg->max;
896 if (uinfo->value.enumerated.item >= cfg->max)
897 uinfo->value.enumerated.item = cfg->max - 1;
898 strlcpy(uinfo->value.enumerated.name,
899 cfg->texts[uinfo->value.enumerated.item],
900 sizeof(uinfo->value.enumerated.name));
901 } else {
902 uinfo->count = cfg->size;
903 uinfo->value.integer.min = 0;
904 uinfo->value.integer.max = cfg->max;
905 uinfo->type = (cfg->max == 1) ?
906 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
907 SNDRV_CTL_ELEM_TYPE_INTEGER;
908 }
909
910 return 0;
911 }
912
913 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
914 struct snd_ctl_elem_value *uc)
915 {
916 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
917 int i;
918
919 for (i = 0; i < cfg->size; i++)
920 if (cfg->texts)
921 uc->value.enumerated.item[i] = cfg->val[i];
922 else
923 uc->value.integer.value[i] = cfg->val[i];
924
925 return 0;
926 }
927
928 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
929 struct snd_ctl_elem_value *uc)
930 {
931 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
932 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
933 int i, change = 0;
934
935 for (i = 0; i < cfg->size; i++) {
936 if (cfg->texts) {
937 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
938 cfg->val[i] = uc->value.enumerated.item[i];
939 } else {
940 change |= (uc->value.integer.value[i] != cfg->val[i]);
941 cfg->val[i] = uc->value.integer.value[i];
942 }
943 }
944
945 if (change && cfg->update)
946 cfg->update(cfg->io, mod);
947
948 return change;
949 }
950
951 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
952 struct rsnd_dai_stream *io,
953 struct snd_soc_pcm_runtime *rtd,
954 const unsigned char *name,
955 struct rsnd_kctrl_cfg *cfg,
956 void (*update)(struct rsnd_dai_stream *io,
957 struct rsnd_mod *mod))
958 {
959 struct snd_card *card = rtd->card->snd_card;
960 struct snd_kcontrol *kctrl;
961 struct snd_kcontrol_new knew = {
962 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
963 .name = name,
964 .info = rsnd_kctrl_info,
965 .index = rtd->num,
966 .get = rsnd_kctrl_get,
967 .put = rsnd_kctrl_put,
968 .private_value = (unsigned long)cfg,
969 };
970 int ret;
971
972 kctrl = snd_ctl_new1(&knew, mod);
973 if (!kctrl)
974 return -ENOMEM;
975
976 ret = snd_ctl_add(card, kctrl);
977 if (ret < 0) {
978 snd_ctl_free_one(kctrl);
979 return ret;
980 }
981
982 cfg->update = update;
983 cfg->card = card;
984 cfg->kctrl = kctrl;
985 cfg->io = io;
986
987 return 0;
988 }
989
990 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
991 {
992 snd_ctl_remove(cfg->card, cfg->kctrl);
993 }
994
995 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
996 struct rsnd_dai_stream *io,
997 struct snd_soc_pcm_runtime *rtd,
998 const unsigned char *name,
999 void (*update)(struct rsnd_dai_stream *io,
1000 struct rsnd_mod *mod),
1001 struct rsnd_kctrl_cfg_m *_cfg,
1002 int ch_size,
1003 u32 max)
1004 {
1005 if (ch_size > RSND_MAX_CHANNELS)
1006 return -EINVAL;
1007
1008 _cfg->cfg.max = max;
1009 _cfg->cfg.size = ch_size;
1010 _cfg->cfg.val = _cfg->val;
1011 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1012 }
1013
1014 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1015 struct rsnd_dai_stream *io,
1016 struct snd_soc_pcm_runtime *rtd,
1017 const unsigned char *name,
1018 void (*update)(struct rsnd_dai_stream *io,
1019 struct rsnd_mod *mod),
1020 struct rsnd_kctrl_cfg_s *_cfg,
1021 u32 max)
1022 {
1023 _cfg->cfg.max = max;
1024 _cfg->cfg.size = 1;
1025 _cfg->cfg.val = &_cfg->val;
1026 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1027 }
1028
1029 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1030 struct rsnd_dai_stream *io,
1031 struct snd_soc_pcm_runtime *rtd,
1032 const unsigned char *name,
1033 struct rsnd_kctrl_cfg_s *_cfg,
1034 void (*update)(struct rsnd_dai_stream *io,
1035 struct rsnd_mod *mod),
1036 const char * const *texts,
1037 u32 max)
1038 {
1039 _cfg->cfg.max = max;
1040 _cfg->cfg.size = 1;
1041 _cfg->cfg.val = &_cfg->val;
1042 _cfg->cfg.texts = texts;
1043 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1044 }
1045
1046 /*
1047 * snd_soc_platform
1048 */
1049
1050 #define PREALLOC_BUFFER (32 * 1024)
1051 #define PREALLOC_BUFFER_MAX (32 * 1024)
1052
1053 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1054 {
1055 struct snd_soc_dai *dai = rtd->cpu_dai;
1056 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1057 int ret;
1058
1059 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1060 if (ret)
1061 return ret;
1062
1063 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1064 if (ret)
1065 return ret;
1066
1067 return snd_pcm_lib_preallocate_pages_for_all(
1068 rtd->pcm,
1069 SNDRV_DMA_TYPE_DEV,
1070 rtd->card->snd_card->dev,
1071 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1072 }
1073
1074 static struct snd_soc_platform_driver rsnd_soc_platform = {
1075 .ops = &rsnd_pcm_ops,
1076 .pcm_new = rsnd_pcm_new,
1077 };
1078
1079 static const struct snd_soc_component_driver rsnd_soc_component = {
1080 .name = "rsnd",
1081 };
1082
1083 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1084 struct rsnd_dai_stream *io)
1085 {
1086 int ret;
1087
1088 ret = rsnd_dai_call(probe, io, priv);
1089 if (ret == -EAGAIN) {
1090 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1091 int i;
1092
1093 /*
1094 * Fallback to PIO mode
1095 */
1096
1097 /*
1098 * call "remove" for SSI/SRC/DVC
1099 * SSI will be switch to PIO mode if it was DMA mode
1100 * see
1101 * rsnd_dma_init()
1102 * rsnd_ssi_fallback()
1103 */
1104 rsnd_dai_call(remove, io, priv);
1105
1106 /*
1107 * remove all mod from io
1108 * and, re connect ssi
1109 */
1110 for (i = 0; i < RSND_MOD_MAX; i++)
1111 rsnd_dai_disconnect((io)->mod[i], io, i);
1112 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1113
1114 /*
1115 * fallback
1116 */
1117 rsnd_dai_call(fallback, io, priv);
1118
1119 /*
1120 * retry to "probe".
1121 * DAI has SSI which is PIO mode only now.
1122 */
1123 ret = rsnd_dai_call(probe, io, priv);
1124 }
1125
1126 return ret;
1127 }
1128
1129 /*
1130 * rsnd probe
1131 */
1132 static int rsnd_probe(struct platform_device *pdev)
1133 {
1134 struct rsnd_priv *priv;
1135 struct device *dev = &pdev->dev;
1136 struct rsnd_dai *rdai;
1137 int (*probe_func[])(struct rsnd_priv *priv) = {
1138 rsnd_gen_probe,
1139 rsnd_dma_probe,
1140 rsnd_ssi_probe,
1141 rsnd_ssiu_probe,
1142 rsnd_src_probe,
1143 rsnd_ctu_probe,
1144 rsnd_mix_probe,
1145 rsnd_dvc_probe,
1146 rsnd_cmd_probe,
1147 rsnd_adg_probe,
1148 rsnd_dai_probe,
1149 };
1150 int ret, i;
1151
1152 /*
1153 * init priv data
1154 */
1155 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1156 if (!priv) {
1157 dev_err(dev, "priv allocate failed\n");
1158 return -ENODEV;
1159 }
1160
1161 priv->pdev = pdev;
1162 priv->flags = (unsigned long)of_device_get_match_data(dev);
1163 spin_lock_init(&priv->lock);
1164
1165 /*
1166 * init each module
1167 */
1168 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1169 ret = probe_func[i](priv);
1170 if (ret)
1171 return ret;
1172 }
1173
1174 for_each_rsnd_dai(rdai, priv, i) {
1175 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1176 if (ret)
1177 goto exit_snd_probe;
1178
1179 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1180 if (ret)
1181 goto exit_snd_probe;
1182 }
1183
1184 dev_set_drvdata(dev, priv);
1185
1186 /*
1187 * asoc register
1188 */
1189 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1190 if (ret < 0) {
1191 dev_err(dev, "cannot snd soc register\n");
1192 return ret;
1193 }
1194
1195 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1196 priv->daidrv, rsnd_rdai_nr(priv));
1197 if (ret < 0) {
1198 dev_err(dev, "cannot snd dai register\n");
1199 goto exit_snd_soc;
1200 }
1201
1202 pm_runtime_enable(dev);
1203
1204 dev_info(dev, "probed\n");
1205 return ret;
1206
1207 exit_snd_soc:
1208 snd_soc_unregister_platform(dev);
1209 exit_snd_probe:
1210 for_each_rsnd_dai(rdai, priv, i) {
1211 rsnd_dai_call(remove, &rdai->playback, priv);
1212 rsnd_dai_call(remove, &rdai->capture, priv);
1213 }
1214
1215 return ret;
1216 }
1217
1218 static int rsnd_remove(struct platform_device *pdev)
1219 {
1220 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1221 struct rsnd_dai *rdai;
1222 void (*remove_func[])(struct rsnd_priv *priv) = {
1223 rsnd_ssi_remove,
1224 rsnd_ssiu_remove,
1225 rsnd_src_remove,
1226 rsnd_ctu_remove,
1227 rsnd_mix_remove,
1228 rsnd_dvc_remove,
1229 rsnd_cmd_remove,
1230 rsnd_adg_remove,
1231 };
1232 int ret = 0, i;
1233
1234 pm_runtime_disable(&pdev->dev);
1235
1236 for_each_rsnd_dai(rdai, priv, i) {
1237 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1238 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1239 }
1240
1241 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1242 remove_func[i](priv);
1243
1244 snd_soc_unregister_component(&pdev->dev);
1245 snd_soc_unregister_platform(&pdev->dev);
1246
1247 return ret;
1248 }
1249
1250 static struct platform_driver rsnd_driver = {
1251 .driver = {
1252 .name = "rcar_sound",
1253 .of_match_table = rsnd_of_match,
1254 },
1255 .probe = rsnd_probe,
1256 .remove = rsnd_remove,
1257 };
1258 module_platform_driver(rsnd_driver);
1259
1260 MODULE_LICENSE("GPL");
1261 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1262 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1263 MODULE_ALIAS("platform:rcar-pcm-audio");
Linux with added FPC-III support