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[mirror_ubuntu-focal-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_192000
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 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
125 struct rsnd_mod *mod)
126 {
127 if (!mod || !mod->ops || !mod->ops->dma_req)
128 return NULL;
129
130 return mod->ops->dma_req(io, mod);
131 }
132
133 u32 *rsnd_mod_get_status(struct rsnd_dai_stream *io,
134 struct rsnd_mod *mod,
135 enum rsnd_mod_type type)
136 {
137 return &mod->status;
138 }
139
140 int rsnd_mod_init(struct rsnd_priv *priv,
141 struct rsnd_mod *mod,
142 struct rsnd_mod_ops *ops,
143 struct clk *clk,
144 u32* (*get_status)(struct rsnd_dai_stream *io,
145 struct rsnd_mod *mod,
146 enum rsnd_mod_type type),
147 enum rsnd_mod_type type,
148 int id)
149 {
150 int ret = clk_prepare(clk);
151
152 if (ret)
153 return ret;
154
155 mod->id = id;
156 mod->ops = ops;
157 mod->type = type;
158 mod->clk = clk;
159 mod->priv = priv;
160 mod->get_status = get_status;
161
162 return ret;
163 }
164
165 void rsnd_mod_quit(struct rsnd_mod *mod)
166 {
167 clk_unprepare(mod->clk);
168 mod->clk = NULL;
169 }
170
171 void rsnd_mod_interrupt(struct rsnd_mod *mod,
172 void (*callback)(struct rsnd_mod *mod,
173 struct rsnd_dai_stream *io))
174 {
175 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
176 struct rsnd_dai_stream *io;
177 struct rsnd_dai *rdai;
178 int i;
179
180 for_each_rsnd_dai(rdai, priv, i) {
181 io = &rdai->playback;
182 if (mod == io->mod[mod->type])
183 callback(mod, io);
184
185 io = &rdai->capture;
186 if (mod == io->mod[mod->type])
187 callback(mod, io);
188 }
189 }
190
191 int rsnd_io_is_working(struct rsnd_dai_stream *io)
192 {
193 /* see rsnd_dai_stream_init/quit() */
194 if (io->substream)
195 return snd_pcm_running(io->substream);
196
197 return 0;
198 }
199
200 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io)
201 {
202 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
203
204 return runtime->channels;
205 }
206
207 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
208 {
209 int chan = rsnd_runtime_channel_original(io);
210 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
211
212 if (ctu_mod) {
213 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
214
215 if (converted_chan)
216 return converted_chan;
217 }
218
219 return chan;
220 }
221
222 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
223 {
224 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
225 int chan = rsnd_io_is_play(io) ?
226 rsnd_runtime_channel_after_ctu(io) :
227 rsnd_runtime_channel_original(io);
228
229 /* Use Multi SSI */
230 if (rsnd_runtime_is_ssi_multi(io))
231 chan /= rsnd_rdai_ssi_lane_get(rdai);
232
233 /* TDM Extend Mode needs 8ch */
234 if (chan == 6)
235 chan = 8;
236
237 return chan;
238 }
239
240 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
241 {
242 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
243 int lane = rsnd_rdai_ssi_lane_get(rdai);
244 int chan = rsnd_io_is_play(io) ?
245 rsnd_runtime_channel_after_ctu(io) :
246 rsnd_runtime_channel_original(io);
247
248 return (chan > 2) && (lane > 1);
249 }
250
251 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
252 {
253 return rsnd_runtime_channel_for_ssi(io) >= 6;
254 }
255
256 /*
257 * ADINR function
258 */
259 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
260 {
261 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
262 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
263 struct device *dev = rsnd_priv_to_dev(priv);
264
265 switch (runtime->sample_bits) {
266 case 16:
267 return 8 << 16;
268 case 32:
269 return 0 << 16;
270 }
271
272 dev_warn(dev, "not supported sample bits\n");
273
274 return 0;
275 }
276
277 /*
278 * DALIGN function
279 */
280 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
281 {
282 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
283 struct rsnd_mod *target;
284 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
285 u32 val = 0x76543210;
286 u32 mask = ~0;
287
288 /*
289 * *Hardware* L/R and *Software* L/R are inverted.
290 * We need to care about inversion timing to control
291 * Playback/Capture correctly.
292 * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R
293 *
294 * sL/R : software L/R
295 * hL/R : hardware L/R
296 * (*) : conversion timing
297 *
298 * Playback
299 * sL/R (*) hL/R hL/R hL/R hL/R hL/R
300 * [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec
301 *
302 * Capture
303 * hL/R hL/R hL/R hL/R hL/R (*) sL/R
304 * codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM]
305 */
306 if (rsnd_io_is_play(io)) {
307 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
308
309 target = src ? src : ssiu;
310 } else {
311 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
312
313 target = cmd ? cmd : ssiu;
314 }
315
316 mask <<= runtime->channels * 4;
317 val = val & mask;
318
319 switch (runtime->sample_bits) {
320 case 16:
321 val |= 0x67452301 & ~mask;
322 break;
323 case 32:
324 val |= 0x76543210 & ~mask;
325 break;
326 }
327
328 /*
329 * exchange channeles on SRC if possible,
330 * otherwise, R/L volume settings on DVC
331 * changes inverted channels
332 */
333 if (mod == target)
334 return val;
335 else
336 return 0x76543210;
337 }
338
339 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
340 {
341 enum rsnd_mod_type playback_mods[] = {
342 RSND_MOD_SRC,
343 RSND_MOD_CMD,
344 RSND_MOD_SSIU,
345 };
346 enum rsnd_mod_type capture_mods[] = {
347 RSND_MOD_CMD,
348 RSND_MOD_SRC,
349 RSND_MOD_SSIU,
350 };
351 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
352 struct rsnd_mod *tmod = NULL;
353 enum rsnd_mod_type *mods =
354 rsnd_io_is_play(io) ?
355 playback_mods : capture_mods;
356 int i;
357
358 /*
359 * This is needed for 24bit data
360 * We need to shift 8bit
361 *
362 * Linux 24bit data is located as 0x00******
363 * HW 24bit data is located as 0x******00
364 *
365 */
366 switch (runtime->sample_bits) {
367 case 16:
368 return 0;
369 case 32:
370 break;
371 }
372
373 for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
374 tmod = rsnd_io_to_mod(io, mods[i]);
375 if (tmod)
376 break;
377 }
378
379 if (tmod != mod)
380 return 0;
381
382 if (rsnd_io_is_play(io))
383 return (0 << 20) | /* shift to Left */
384 (8 << 16); /* 8bit */
385 else
386 return (1 << 20) | /* shift to Right */
387 (8 << 16); /* 8bit */
388 }
389
390 /*
391 * rsnd_dai functions
392 */
393 struct rsnd_mod *rsnd_mod_next(int *iterator,
394 struct rsnd_dai_stream *io,
395 enum rsnd_mod_type *array,
396 int array_size)
397 {
398 struct rsnd_mod *mod;
399 enum rsnd_mod_type type;
400 int max = array ? array_size : RSND_MOD_MAX;
401
402 for (; *iterator < max; (*iterator)++) {
403 type = (array) ? array[*iterator] : *iterator;
404 mod = rsnd_io_to_mod(io, type);
405 if (mod)
406 return mod;
407 }
408
409 return NULL;
410 }
411
412 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
413 {
414 /* CAPTURE */
415 RSND_MOD_AUDMAPP,
416 RSND_MOD_AUDMA,
417 RSND_MOD_DVC,
418 RSND_MOD_MIX,
419 RSND_MOD_CTU,
420 RSND_MOD_CMD,
421 RSND_MOD_SRC,
422 RSND_MOD_SSIU,
423 RSND_MOD_SSIM3,
424 RSND_MOD_SSIM2,
425 RSND_MOD_SSIM1,
426 RSND_MOD_SSIP,
427 RSND_MOD_SSI,
428 }, {
429 /* PLAYBACK */
430 RSND_MOD_AUDMAPP,
431 RSND_MOD_AUDMA,
432 RSND_MOD_SSIM3,
433 RSND_MOD_SSIM2,
434 RSND_MOD_SSIM1,
435 RSND_MOD_SSIP,
436 RSND_MOD_SSI,
437 RSND_MOD_SSIU,
438 RSND_MOD_DVC,
439 RSND_MOD_MIX,
440 RSND_MOD_CTU,
441 RSND_MOD_CMD,
442 RSND_MOD_SRC,
443 },
444 };
445
446 static int rsnd_status_update(u32 *status,
447 int shift, int add, int timing)
448 {
449 u32 mask = 0xF << shift;
450 u8 val = (*status >> shift) & 0xF;
451 u8 next_val = (val + add) & 0xF;
452 int func_call = (val == timing);
453
454 if (next_val == 0xF) /* underflow case */
455 func_call = 0;
456 else
457 *status = (*status & ~mask) + (next_val << shift);
458
459 return func_call;
460 }
461
462 #define rsnd_dai_call(fn, io, param...) \
463 ({ \
464 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); \
465 struct rsnd_mod *mod; \
466 int is_play = rsnd_io_is_play(io); \
467 int ret = 0, i; \
468 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \
469 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \
470 int tmp = 0; \
471 u32 *status = mod->get_status(io, mod, types[i]); \
472 int func_call = rsnd_status_update(status, \
473 __rsnd_mod_shift_##fn, \
474 __rsnd_mod_add_##fn, \
475 __rsnd_mod_call_##fn); \
476 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
477 rsnd_mod_name(mod), rsnd_mod_id(mod), *status, \
478 (func_call && (mod)->ops->fn) ? #fn : ""); \
479 if (func_call && (mod)->ops->fn) \
480 tmp = (mod)->ops->fn(mod, io, param); \
481 if (tmp) \
482 dev_err(dev, "%s[%d] : %s error %d\n", \
483 rsnd_mod_name(mod), rsnd_mod_id(mod), \
484 #fn, tmp); \
485 ret |= tmp; \
486 } \
487 ret; \
488 })
489
490 int rsnd_dai_connect(struct rsnd_mod *mod,
491 struct rsnd_dai_stream *io,
492 enum rsnd_mod_type type)
493 {
494 struct rsnd_priv *priv;
495 struct device *dev;
496
497 if (!mod)
498 return -EIO;
499
500 if (io->mod[type] == mod)
501 return 0;
502
503 if (io->mod[type])
504 return -EINVAL;
505
506 priv = rsnd_mod_to_priv(mod);
507 dev = rsnd_priv_to_dev(priv);
508
509 io->mod[type] = mod;
510
511 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
512 rsnd_mod_name(mod), rsnd_mod_id(mod),
513 rsnd_io_is_play(io) ? "Playback" : "Capture");
514
515 return 0;
516 }
517
518 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
519 struct rsnd_dai_stream *io,
520 enum rsnd_mod_type type)
521 {
522 io->mod[type] = NULL;
523 }
524
525 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
526 int max_channels)
527 {
528 if (max_channels > 0)
529 rdai->max_channels = max_channels;
530
531 return rdai->max_channels;
532 }
533
534 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
535 int ssi_lane)
536 {
537 if (ssi_lane > 0)
538 rdai->ssi_lane = ssi_lane;
539
540 return rdai->ssi_lane;
541 }
542
543 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
544 {
545 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
546 return NULL;
547
548 return priv->rdai + id;
549 }
550
551 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
552 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
553 {
554 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
555
556 return rsnd_rdai_get(priv, dai->id);
557 }
558
559 /*
560 * rsnd_soc_dai functions
561 */
562 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
563 {
564 struct snd_pcm_substream *substream = io->substream;
565
566 /*
567 * this function should be called...
568 *
569 * - if rsnd_dai_pointer_update() returns true
570 * - without spin lock
571 */
572
573 snd_pcm_period_elapsed(substream);
574 }
575
576 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
577 struct snd_pcm_substream *substream)
578 {
579 io->substream = substream;
580 }
581
582 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
583 {
584 io->substream = NULL;
585 }
586
587 static
588 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
589 {
590 struct snd_soc_pcm_runtime *rtd = substream->private_data;
591
592 return rtd->cpu_dai;
593 }
594
595 static
596 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
597 struct snd_pcm_substream *substream)
598 {
599 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
600 return &rdai->playback;
601 else
602 return &rdai->capture;
603 }
604
605 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
606 struct snd_soc_dai *dai)
607 {
608 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
609 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
610 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
611 int ret;
612 unsigned long flags;
613
614 spin_lock_irqsave(&priv->lock, flags);
615
616 switch (cmd) {
617 case SNDRV_PCM_TRIGGER_START:
618 case SNDRV_PCM_TRIGGER_RESUME:
619 rsnd_dai_stream_init(io, substream);
620
621 ret = rsnd_dai_call(init, io, priv);
622 if (ret < 0)
623 goto dai_trigger_end;
624
625 ret = rsnd_dai_call(start, io, priv);
626 if (ret < 0)
627 goto dai_trigger_end;
628
629 ret = rsnd_dai_call(irq, io, priv, 1);
630 if (ret < 0)
631 goto dai_trigger_end;
632
633 break;
634 case SNDRV_PCM_TRIGGER_STOP:
635 case SNDRV_PCM_TRIGGER_SUSPEND:
636 ret = rsnd_dai_call(irq, io, priv, 0);
637
638 ret |= rsnd_dai_call(stop, io, priv);
639
640 ret |= rsnd_dai_call(quit, io, priv);
641
642 rsnd_dai_stream_quit(io);
643 break;
644 default:
645 ret = -EINVAL;
646 }
647
648 dai_trigger_end:
649 spin_unlock_irqrestore(&priv->lock, flags);
650
651 return ret;
652 }
653
654 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
655 {
656 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
657
658 /* set master/slave audio interface */
659 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
660 case SND_SOC_DAIFMT_CBM_CFM:
661 rdai->clk_master = 0;
662 break;
663 case SND_SOC_DAIFMT_CBS_CFS:
664 rdai->clk_master = 1; /* codec is slave, cpu is master */
665 break;
666 default:
667 return -EINVAL;
668 }
669
670 /* set format */
671 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
672 case SND_SOC_DAIFMT_I2S:
673 rdai->sys_delay = 0;
674 rdai->data_alignment = 0;
675 rdai->frm_clk_inv = 0;
676 break;
677 case SND_SOC_DAIFMT_LEFT_J:
678 rdai->sys_delay = 1;
679 rdai->data_alignment = 0;
680 rdai->frm_clk_inv = 1;
681 break;
682 case SND_SOC_DAIFMT_RIGHT_J:
683 rdai->sys_delay = 1;
684 rdai->data_alignment = 1;
685 rdai->frm_clk_inv = 1;
686 break;
687 }
688
689 /* set clock inversion */
690 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
691 case SND_SOC_DAIFMT_NB_IF:
692 rdai->frm_clk_inv = !rdai->frm_clk_inv;
693 break;
694 case SND_SOC_DAIFMT_IB_NF:
695 rdai->bit_clk_inv = !rdai->bit_clk_inv;
696 break;
697 case SND_SOC_DAIFMT_IB_IF:
698 rdai->bit_clk_inv = !rdai->bit_clk_inv;
699 rdai->frm_clk_inv = !rdai->frm_clk_inv;
700 break;
701 case SND_SOC_DAIFMT_NB_NF:
702 default:
703 break;
704 }
705
706 return 0;
707 }
708
709 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
710 u32 tx_mask, u32 rx_mask,
711 int slots, int slot_width)
712 {
713 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
714 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
715 struct device *dev = rsnd_priv_to_dev(priv);
716
717 switch (slots) {
718 case 2:
719 case 6:
720 case 8:
721 /* TDM Extend Mode */
722 rsnd_rdai_channels_set(rdai, slots);
723 rsnd_rdai_ssi_lane_set(rdai, 1);
724 break;
725 default:
726 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
727 return -EINVAL;
728 }
729
730 return 0;
731 }
732
733 static unsigned int rsnd_soc_hw_channels_list[] = {
734 2, 6, 8,
735 };
736
737 static unsigned int rsnd_soc_hw_rate_list[] = {
738 8000,
739 11025,
740 16000,
741 22050,
742 32000,
743 44100,
744 48000,
745 64000,
746 88200,
747 96000,
748 176400,
749 192000,
750 };
751
752 static int rsnd_soc_hw_rule(struct rsnd_priv *priv,
753 unsigned int *list, int list_num,
754 struct snd_interval *baseline, struct snd_interval *iv)
755 {
756 struct snd_interval p;
757 unsigned int rate;
758 int i;
759
760 snd_interval_any(&p);
761 p.min = UINT_MAX;
762 p.max = 0;
763
764 for (i = 0; i < list_num; i++) {
765
766 if (!snd_interval_test(iv, list[i]))
767 continue;
768
769 rate = rsnd_ssi_clk_query(priv,
770 baseline->min, list[i], NULL);
771 if (rate > 0) {
772 p.min = min(p.min, list[i]);
773 p.max = max(p.max, list[i]);
774 }
775
776 rate = rsnd_ssi_clk_query(priv,
777 baseline->max, list[i], NULL);
778 if (rate > 0) {
779 p.min = min(p.min, list[i]);
780 p.max = max(p.max, list[i]);
781 }
782 }
783
784 return snd_interval_refine(iv, &p);
785 }
786
787 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
788 struct snd_pcm_hw_rule *rule)
789 {
790 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
791 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
792 struct snd_interval ic;
793 struct snd_soc_dai *dai = rule->private;
794 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
795 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
796
797 /*
798 * possible sampling rate limitation is same as
799 * 2ch if it supports multi ssi
800 */
801 ic = *ic_;
802 if (1 < rsnd_rdai_ssi_lane_get(rdai)) {
803 ic.min = 2;
804 ic.max = 2;
805 }
806
807 return rsnd_soc_hw_rule(priv, rsnd_soc_hw_rate_list,
808 ARRAY_SIZE(rsnd_soc_hw_rate_list),
809 &ic, ir);
810 }
811
812
813 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
814 struct snd_pcm_hw_rule *rule)
815 {
816 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
817 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
818 struct snd_interval ic;
819 struct snd_soc_dai *dai = rule->private;
820 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
821 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
822
823 /*
824 * possible sampling rate limitation is same as
825 * 2ch if it supports multi ssi
826 */
827 ic = *ic_;
828 if (1 < rsnd_rdai_ssi_lane_get(rdai)) {
829 ic.min = 2;
830 ic.max = 2;
831 }
832
833 return rsnd_soc_hw_rule(priv, rsnd_soc_hw_channels_list,
834 ARRAY_SIZE(rsnd_soc_hw_channels_list),
835 ir, &ic);
836 }
837
838 static const struct snd_pcm_hardware rsnd_pcm_hardware = {
839 .info = SNDRV_PCM_INFO_INTERLEAVED |
840 SNDRV_PCM_INFO_MMAP |
841 SNDRV_PCM_INFO_MMAP_VALID,
842 .buffer_bytes_max = 64 * 1024,
843 .period_bytes_min = 32,
844 .period_bytes_max = 8192,
845 .periods_min = 1,
846 .periods_max = 32,
847 .fifo_size = 256,
848 };
849
850 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
851 struct snd_soc_dai *dai)
852 {
853 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
854 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
855 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
856 struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
857 struct snd_pcm_runtime *runtime = substream->runtime;
858 unsigned int max_channels = rsnd_rdai_channels_get(rdai);
859 int ret;
860 int i;
861
862 /*
863 * Channel Limitation
864 * It depends on Platform design
865 */
866 constraint->list = rsnd_soc_hw_channels_list;
867 constraint->count = 0;
868 constraint->mask = 0;
869
870 for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
871 if (rsnd_soc_hw_channels_list[i] > max_channels)
872 break;
873 constraint->count = i + 1;
874 }
875
876 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
877
878 snd_pcm_hw_constraint_list(runtime, 0,
879 SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
880
881 snd_pcm_hw_constraint_integer(runtime,
882 SNDRV_PCM_HW_PARAM_PERIODS);
883
884 /*
885 * Sampling Rate / Channel Limitation
886 * It depends on Clock Master Mode
887 */
888 if (rsnd_rdai_is_clk_master(rdai)) {
889 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
890 rsnd_soc_hw_rule_rate, dai,
891 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
892 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
893 rsnd_soc_hw_rule_channels, dai,
894 SNDRV_PCM_HW_PARAM_RATE, -1);
895 }
896
897 /*
898 * call rsnd_dai_call without spinlock
899 */
900 ret = rsnd_dai_call(nolock_start, io, priv);
901 if (ret < 0)
902 rsnd_dai_call(nolock_stop, io, priv);
903
904 return ret;
905 }
906
907 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
908 struct snd_soc_dai *dai)
909 {
910 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
911 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
912 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
913
914 /*
915 * call rsnd_dai_call without spinlock
916 */
917 rsnd_dai_call(nolock_stop, io, priv);
918 }
919
920 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
921 .startup = rsnd_soc_dai_startup,
922 .shutdown = rsnd_soc_dai_shutdown,
923 .trigger = rsnd_soc_dai_trigger,
924 .set_fmt = rsnd_soc_dai_set_fmt,
925 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
926 };
927
928 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
929 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
930 struct device_node *node,
931 struct device_node *playback,
932 struct device_node *capture)
933 {
934 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
935 struct device_node *np;
936 struct rsnd_mod *mod;
937 int i;
938
939 if (!node)
940 return;
941
942 i = 0;
943 for_each_child_of_node(node, np) {
944 mod = mod_get(priv, i);
945 if (np == playback)
946 rsnd_dai_connect(mod, &rdai->playback, mod->type);
947 if (np == capture)
948 rsnd_dai_connect(mod, &rdai->capture, mod->type);
949 i++;
950 }
951
952 of_node_put(node);
953 }
954
955 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
956 int *is_graph)
957 {
958 struct device *dev = rsnd_priv_to_dev(priv);
959 struct device_node *np = dev->of_node;
960 struct device_node *dai_node;
961 struct device_node *ret;
962
963 *is_graph = 0;
964
965 /*
966 * parse both previous dai (= rcar_sound,dai), and
967 * graph dai (= ports/port)
968 */
969 dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
970 if (dai_node) {
971 ret = dai_node;
972 goto of_node_compatible;
973 }
974
975 ret = np;
976
977 dai_node = of_graph_get_next_endpoint(np, NULL);
978 if (dai_node)
979 goto of_node_graph;
980
981 return NULL;
982
983 of_node_graph:
984 *is_graph = 1;
985 of_node_compatible:
986 of_node_put(dai_node);
987
988 return ret;
989 }
990
991 static void __rsnd_dai_probe(struct rsnd_priv *priv,
992 struct device_node *dai_np,
993 int dai_i, int is_graph)
994 {
995 struct device_node *playback, *capture;
996 struct rsnd_dai_stream *io_playback;
997 struct rsnd_dai_stream *io_capture;
998 struct snd_soc_dai_driver *drv;
999 struct rsnd_dai *rdai;
1000 struct device *dev = rsnd_priv_to_dev(priv);
1001 int io_i;
1002
1003 rdai = rsnd_rdai_get(priv, dai_i);
1004 drv = priv->daidrv + dai_i;
1005 io_playback = &rdai->playback;
1006 io_capture = &rdai->capture;
1007
1008 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1009
1010 rdai->priv = priv;
1011 drv->name = rdai->name;
1012 drv->ops = &rsnd_soc_dai_ops;
1013
1014 snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
1015 "DAI%d Playback", dai_i);
1016 drv->playback.rates = RSND_RATES;
1017 drv->playback.formats = RSND_FMTS;
1018 drv->playback.channels_min = 2;
1019 drv->playback.channels_max = 8;
1020 drv->playback.stream_name = rdai->playback.name;
1021
1022 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
1023 "DAI%d Capture", dai_i);
1024 drv->capture.rates = RSND_RATES;
1025 drv->capture.formats = RSND_FMTS;
1026 drv->capture.channels_min = 2;
1027 drv->capture.channels_max = 8;
1028 drv->capture.stream_name = rdai->capture.name;
1029
1030 rdai->playback.rdai = rdai;
1031 rdai->capture.rdai = rdai;
1032 rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1033 rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1034
1035 for (io_i = 0;; io_i++) {
1036 playback = of_parse_phandle(dai_np, "playback", io_i);
1037 capture = of_parse_phandle(dai_np, "capture", io_i);
1038
1039 if (!playback && !capture)
1040 break;
1041
1042 rsnd_parse_connect_ssi(rdai, playback, capture);
1043 rsnd_parse_connect_src(rdai, playback, capture);
1044 rsnd_parse_connect_ctu(rdai, playback, capture);
1045 rsnd_parse_connect_mix(rdai, playback, capture);
1046 rsnd_parse_connect_dvc(rdai, playback, capture);
1047
1048 of_node_put(playback);
1049 of_node_put(capture);
1050 }
1051
1052 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1053 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
1054 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
1055 }
1056
1057 static int rsnd_dai_probe(struct rsnd_priv *priv)
1058 {
1059 struct device_node *dai_node;
1060 struct device_node *dai_np;
1061 struct snd_soc_dai_driver *rdrv;
1062 struct device *dev = rsnd_priv_to_dev(priv);
1063 struct rsnd_dai *rdai;
1064 int nr;
1065 int is_graph;
1066 int dai_i;
1067
1068 dai_node = rsnd_dai_of_node(priv, &is_graph);
1069 if (is_graph)
1070 nr = of_graph_get_endpoint_count(dai_node);
1071 else
1072 nr = of_get_child_count(dai_node);
1073
1074 if (!nr)
1075 return -EINVAL;
1076
1077 rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
1078 rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
1079 if (!rdrv || !rdai)
1080 return -ENOMEM;
1081
1082 priv->rdai_nr = nr;
1083 priv->daidrv = rdrv;
1084 priv->rdai = rdai;
1085
1086 /*
1087 * parse all dai
1088 */
1089 dai_i = 0;
1090 if (is_graph) {
1091 for_each_endpoint_of_node(dai_node, dai_np) {
1092 __rsnd_dai_probe(priv, dai_np, dai_i, is_graph);
1093 rsnd_ssi_parse_hdmi_connection(priv, dai_np, dai_i);
1094 dai_i++;
1095 }
1096 } else {
1097 for_each_child_of_node(dai_node, dai_np)
1098 __rsnd_dai_probe(priv, dai_np, dai_i++, is_graph);
1099 }
1100
1101 return 0;
1102 }
1103
1104 /*
1105 * pcm ops
1106 */
1107 static int rsnd_hw_params(struct snd_pcm_substream *substream,
1108 struct snd_pcm_hw_params *hw_params)
1109 {
1110 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1111 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1112 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1113 int ret;
1114
1115 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1116 if (ret)
1117 return ret;
1118
1119 return snd_pcm_lib_malloc_pages(substream,
1120 params_buffer_bytes(hw_params));
1121 }
1122
1123 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
1124 {
1125 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1126 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1127 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1128 snd_pcm_uframes_t pointer = 0;
1129
1130 rsnd_dai_call(pointer, io, &pointer);
1131
1132 return pointer;
1133 }
1134
1135 static const struct snd_pcm_ops rsnd_pcm_ops = {
1136 .ioctl = snd_pcm_lib_ioctl,
1137 .hw_params = rsnd_hw_params,
1138 .hw_free = snd_pcm_lib_free_pages,
1139 .pointer = rsnd_pointer,
1140 };
1141
1142 /*
1143 * snd_kcontrol
1144 */
1145 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1146 struct snd_ctl_elem_info *uinfo)
1147 {
1148 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1149
1150 if (cfg->texts) {
1151 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1152 uinfo->count = cfg->size;
1153 uinfo->value.enumerated.items = cfg->max;
1154 if (uinfo->value.enumerated.item >= cfg->max)
1155 uinfo->value.enumerated.item = cfg->max - 1;
1156 strlcpy(uinfo->value.enumerated.name,
1157 cfg->texts[uinfo->value.enumerated.item],
1158 sizeof(uinfo->value.enumerated.name));
1159 } else {
1160 uinfo->count = cfg->size;
1161 uinfo->value.integer.min = 0;
1162 uinfo->value.integer.max = cfg->max;
1163 uinfo->type = (cfg->max == 1) ?
1164 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1165 SNDRV_CTL_ELEM_TYPE_INTEGER;
1166 }
1167
1168 return 0;
1169 }
1170
1171 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1172 struct snd_ctl_elem_value *uc)
1173 {
1174 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1175 int i;
1176
1177 for (i = 0; i < cfg->size; i++)
1178 if (cfg->texts)
1179 uc->value.enumerated.item[i] = cfg->val[i];
1180 else
1181 uc->value.integer.value[i] = cfg->val[i];
1182
1183 return 0;
1184 }
1185
1186 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1187 struct snd_ctl_elem_value *uc)
1188 {
1189 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1190 int i, change = 0;
1191
1192 if (!cfg->accept(cfg->io))
1193 return 0;
1194
1195 for (i = 0; i < cfg->size; i++) {
1196 if (cfg->texts) {
1197 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1198 cfg->val[i] = uc->value.enumerated.item[i];
1199 } else {
1200 change |= (uc->value.integer.value[i] != cfg->val[i]);
1201 cfg->val[i] = uc->value.integer.value[i];
1202 }
1203 }
1204
1205 if (change && cfg->update)
1206 cfg->update(cfg->io, cfg->mod);
1207
1208 return change;
1209 }
1210
1211 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1212 {
1213 return 1;
1214 }
1215
1216 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1217 {
1218 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1219
1220 return !!runtime;
1221 }
1222
1223 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1224 {
1225 cfg->cfg.val = cfg->val;
1226
1227 return &cfg->cfg;
1228 }
1229
1230 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1231 {
1232 cfg->cfg.val = &cfg->val;
1233
1234 return &cfg->cfg;
1235 }
1236
1237 const char * const volume_ramp_rate[] = {
1238 "128 dB/1 step", /* 00000 */
1239 "64 dB/1 step", /* 00001 */
1240 "32 dB/1 step", /* 00010 */
1241 "16 dB/1 step", /* 00011 */
1242 "8 dB/1 step", /* 00100 */
1243 "4 dB/1 step", /* 00101 */
1244 "2 dB/1 step", /* 00110 */
1245 "1 dB/1 step", /* 00111 */
1246 "0.5 dB/1 step", /* 01000 */
1247 "0.25 dB/1 step", /* 01001 */
1248 "0.125 dB/1 step", /* 01010 = VOLUME_RAMP_MAX_MIX */
1249 "0.125 dB/2 steps", /* 01011 */
1250 "0.125 dB/4 steps", /* 01100 */
1251 "0.125 dB/8 steps", /* 01101 */
1252 "0.125 dB/16 steps", /* 01110 */
1253 "0.125 dB/32 steps", /* 01111 */
1254 "0.125 dB/64 steps", /* 10000 */
1255 "0.125 dB/128 steps", /* 10001 */
1256 "0.125 dB/256 steps", /* 10010 */
1257 "0.125 dB/512 steps", /* 10011 */
1258 "0.125 dB/1024 steps", /* 10100 */
1259 "0.125 dB/2048 steps", /* 10101 */
1260 "0.125 dB/4096 steps", /* 10110 */
1261 "0.125 dB/8192 steps", /* 10111 = VOLUME_RAMP_MAX_DVC */
1262 };
1263
1264 int rsnd_kctrl_new(struct rsnd_mod *mod,
1265 struct rsnd_dai_stream *io,
1266 struct snd_soc_pcm_runtime *rtd,
1267 const unsigned char *name,
1268 int (*accept)(struct rsnd_dai_stream *io),
1269 void (*update)(struct rsnd_dai_stream *io,
1270 struct rsnd_mod *mod),
1271 struct rsnd_kctrl_cfg *cfg,
1272 const char * const *texts,
1273 int size,
1274 u32 max)
1275 {
1276 struct snd_card *card = rtd->card->snd_card;
1277 struct snd_kcontrol *kctrl;
1278 struct snd_kcontrol_new knew = {
1279 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1280 .name = name,
1281 .info = rsnd_kctrl_info,
1282 .index = rtd->num,
1283 .get = rsnd_kctrl_get,
1284 .put = rsnd_kctrl_put,
1285 };
1286 int ret;
1287
1288 if (size > RSND_MAX_CHANNELS)
1289 return -EINVAL;
1290
1291 kctrl = snd_ctl_new1(&knew, cfg);
1292 if (!kctrl)
1293 return -ENOMEM;
1294
1295 ret = snd_ctl_add(card, kctrl);
1296 if (ret < 0)
1297 return ret;
1298
1299 cfg->texts = texts;
1300 cfg->max = max;
1301 cfg->size = size;
1302 cfg->accept = accept;
1303 cfg->update = update;
1304 cfg->card = card;
1305 cfg->kctrl = kctrl;
1306 cfg->io = io;
1307 cfg->mod = mod;
1308
1309 return 0;
1310 }
1311
1312 /*
1313 * snd_soc_platform
1314 */
1315
1316 #define PREALLOC_BUFFER (32 * 1024)
1317 #define PREALLOC_BUFFER_MAX (32 * 1024)
1318
1319 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1320 {
1321 struct snd_soc_dai *dai = rtd->cpu_dai;
1322 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1323 int ret;
1324
1325 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1326 if (ret)
1327 return ret;
1328
1329 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1330 if (ret)
1331 return ret;
1332
1333 return snd_pcm_lib_preallocate_pages_for_all(
1334 rtd->pcm,
1335 SNDRV_DMA_TYPE_CONTINUOUS,
1336 snd_dma_continuous_data(GFP_KERNEL),
1337 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1338 }
1339
1340 static const struct snd_soc_platform_driver rsnd_soc_platform = {
1341 .ops = &rsnd_pcm_ops,
1342 .pcm_new = rsnd_pcm_new,
1343 };
1344
1345 static const struct snd_soc_component_driver rsnd_soc_component = {
1346 .name = "rsnd",
1347 };
1348
1349 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1350 struct rsnd_dai_stream *io)
1351 {
1352 int ret;
1353
1354 ret = rsnd_dai_call(probe, io, priv);
1355 if (ret == -EAGAIN) {
1356 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1357 struct rsnd_mod *mod;
1358 int i;
1359
1360 /*
1361 * Fallback to PIO mode
1362 */
1363
1364 /*
1365 * call "remove" for SSI/SRC/DVC
1366 * SSI will be switch to PIO mode if it was DMA mode
1367 * see
1368 * rsnd_dma_init()
1369 * rsnd_ssi_fallback()
1370 */
1371 rsnd_dai_call(remove, io, priv);
1372
1373 /*
1374 * remove all mod from io
1375 * and, re connect ssi
1376 */
1377 for_each_rsnd_mod(i, mod, io)
1378 rsnd_dai_disconnect(mod, io, i);
1379 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1380
1381 /*
1382 * fallback
1383 */
1384 rsnd_dai_call(fallback, io, priv);
1385
1386 /*
1387 * retry to "probe".
1388 * DAI has SSI which is PIO mode only now.
1389 */
1390 ret = rsnd_dai_call(probe, io, priv);
1391 }
1392
1393 return ret;
1394 }
1395
1396 /*
1397 * rsnd probe
1398 */
1399 static int rsnd_probe(struct platform_device *pdev)
1400 {
1401 struct rsnd_priv *priv;
1402 struct device *dev = &pdev->dev;
1403 struct rsnd_dai *rdai;
1404 int (*probe_func[])(struct rsnd_priv *priv) = {
1405 rsnd_gen_probe,
1406 rsnd_dma_probe,
1407 rsnd_ssi_probe,
1408 rsnd_ssiu_probe,
1409 rsnd_src_probe,
1410 rsnd_ctu_probe,
1411 rsnd_mix_probe,
1412 rsnd_dvc_probe,
1413 rsnd_cmd_probe,
1414 rsnd_adg_probe,
1415 rsnd_dai_probe,
1416 };
1417 int ret, i;
1418
1419 /*
1420 * init priv data
1421 */
1422 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1423 if (!priv)
1424 return -ENODEV;
1425
1426 priv->pdev = pdev;
1427 priv->flags = (unsigned long)of_device_get_match_data(dev);
1428 spin_lock_init(&priv->lock);
1429
1430 /*
1431 * init each module
1432 */
1433 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1434 ret = probe_func[i](priv);
1435 if (ret)
1436 return ret;
1437 }
1438
1439 for_each_rsnd_dai(rdai, priv, i) {
1440 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1441 if (ret)
1442 goto exit_snd_probe;
1443
1444 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1445 if (ret)
1446 goto exit_snd_probe;
1447 }
1448
1449 dev_set_drvdata(dev, priv);
1450
1451 /*
1452 * asoc register
1453 */
1454 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1455 if (ret < 0) {
1456 dev_err(dev, "cannot snd soc register\n");
1457 return ret;
1458 }
1459
1460 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1461 priv->daidrv, rsnd_rdai_nr(priv));
1462 if (ret < 0) {
1463 dev_err(dev, "cannot snd dai register\n");
1464 goto exit_snd_soc;
1465 }
1466
1467 pm_runtime_enable(dev);
1468
1469 dev_info(dev, "probed\n");
1470 return ret;
1471
1472 exit_snd_soc:
1473 snd_soc_unregister_platform(dev);
1474 exit_snd_probe:
1475 for_each_rsnd_dai(rdai, priv, i) {
1476 rsnd_dai_call(remove, &rdai->playback, priv);
1477 rsnd_dai_call(remove, &rdai->capture, priv);
1478 }
1479
1480 return ret;
1481 }
1482
1483 static int rsnd_remove(struct platform_device *pdev)
1484 {
1485 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1486 struct rsnd_dai *rdai;
1487 void (*remove_func[])(struct rsnd_priv *priv) = {
1488 rsnd_ssi_remove,
1489 rsnd_ssiu_remove,
1490 rsnd_src_remove,
1491 rsnd_ctu_remove,
1492 rsnd_mix_remove,
1493 rsnd_dvc_remove,
1494 rsnd_cmd_remove,
1495 rsnd_adg_remove,
1496 };
1497 int ret = 0, i;
1498
1499 pm_runtime_disable(&pdev->dev);
1500
1501 for_each_rsnd_dai(rdai, priv, i) {
1502 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1503 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1504 }
1505
1506 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1507 remove_func[i](priv);
1508
1509 snd_soc_unregister_component(&pdev->dev);
1510 snd_soc_unregister_platform(&pdev->dev);
1511
1512 return ret;
1513 }
1514
1515 static int rsnd_suspend(struct device *dev)
1516 {
1517 struct rsnd_priv *priv = dev_get_drvdata(dev);
1518
1519 rsnd_adg_clk_disable(priv);
1520
1521 return 0;
1522 }
1523
1524 static int rsnd_resume(struct device *dev)
1525 {
1526 struct rsnd_priv *priv = dev_get_drvdata(dev);
1527
1528 rsnd_adg_clk_enable(priv);
1529
1530 return 0;
1531 }
1532
1533 static const struct dev_pm_ops rsnd_pm_ops = {
1534 .suspend = rsnd_suspend,
1535 .resume = rsnd_resume,
1536 };
1537
1538 static struct platform_driver rsnd_driver = {
1539 .driver = {
1540 .name = "rcar_sound",
1541 .pm = &rsnd_pm_ops,
1542 .of_match_table = rsnd_of_match,
1543 },
1544 .probe = rsnd_probe,
1545 .remove = rsnd_remove,
1546 };
1547 module_platform_driver(rsnd_driver);
1548
1549 MODULE_LICENSE("GPL");
1550 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1551 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1552 MODULE_ALIAS("platform:rcar-pcm-audio");
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