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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / sound / soc / sh / rcar / core.c
blob0bfcb77e5f65877c5090ba1b3c49f16e807572ba
1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Renesas R-Car SRU/SCU/SSIU/SSI support
4 //
5 // Copyright (C) 2013 Renesas Solutions Corp.
6 // Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 //
8 // Based on fsi.c
9 // Kuninori Morimoto <morimoto.kuninori@renesas.com>
10
11 /*
12 * Renesas R-Car sound device structure
13 *
14 * Gen1
15 *
16 * SRU : Sound Routing Unit
17 * - SRC : Sampling Rate Converter
18 * - CMD
19 * - CTU : Channel Count Conversion Unit
20 * - MIX : Mixer
21 * - DVC : Digital Volume and Mute Function
22 * - SSI : Serial Sound Interface
23 *
24 * Gen2
25 *
26 * SCU : Sampling Rate Converter Unit
27 * - SRC : Sampling Rate Converter
28 * - CMD
29 * - CTU : Channel Count Conversion Unit
30 * - MIX : Mixer
31 * - DVC : Digital Volume and Mute Function
32 * SSIU : Serial Sound Interface Unit
33 * - SSI : Serial Sound Interface
34 */
35
36 /*
37 * driver data Image
38 *
39 * rsnd_priv
40 * |
41 * | ** this depends on Gen1/Gen2
42 * |
43 * +- gen
44 * |
45 * | ** these depend on data path
46 * | ** gen and platform data control it
47 * |
48 * +- rdai[0]
49 * | | sru ssiu ssi
50 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
51 * | |
52 * | | sru ssiu ssi
53 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
54 * |
55 * +- rdai[1]
56 * | | sru ssiu ssi
57 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
58 * | |
59 * | | sru ssiu ssi
60 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
61 * ...
62 * |
63 * | ** these control ssi
64 * |
65 * +- ssi
66 * | |
67 * | +- ssi[0]
68 * | +- ssi[1]
69 * | +- ssi[2]
70 * | ...
71 * |
72 * | ** these control src
73 * |
74 * +- src
75 * |
76 * +- src[0]
77 * +- src[1]
78 * +- src[2]
79 * ...
80 *
81 *
82 * for_each_rsnd_dai(xx, priv, xx)
83 * rdai[0] => rdai[1] => rdai[2] => ...
84 *
85 * for_each_rsnd_mod(xx, rdai, xx)
86 * [mod] => [mod] => [mod] => ...
87 *
88 * rsnd_dai_call(xxx, fn )
89 * [mod]->fn() -> [mod]->fn() -> [mod]->fn()...
90 *
91 */
92
93 /*
94 * you can enable below define if you don't need
95 * DAI status debug message when debugging
96 * see rsnd_dbg_dai_call()
97 *
98 * #define RSND_DEBUG_NO_DAI_CALL 1
99 */
100
101 #include <linux/pm_runtime.h>
102 #include "rsnd.h"
103
104 #define RSND_RATES SNDRV_PCM_RATE_8000_192000
105 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S8 |\
106 SNDRV_PCM_FMTBIT_S16_LE |\
107 SNDRV_PCM_FMTBIT_S24_LE)
108
109 static const struct of_device_id rsnd_of_match[] = {
110 { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 },
111 { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 },
112 { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN3 },
113 /* Special Handling */
114 { .compatible = "renesas,rcar_sound-r8a77990", .data = (void *)(RSND_GEN3 | RSND_SOC_E) },
115 {},
116 };
117 MODULE_DEVICE_TABLE(of, rsnd_of_match);
118
119 /*
120 * rsnd_mod functions
121 */
122 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
123 {
124 if (mod->type != type) {
125 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
126 struct device *dev = rsnd_priv_to_dev(priv);
127
128 dev_warn(dev, "%s is not your expected module\n",
129 rsnd_mod_name(mod));
130 }
131 }
132
133 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
134 struct rsnd_mod *mod)
135 {
136 if (!mod || !mod->ops || !mod->ops->dma_req)
137 return NULL;
138
139 return mod->ops->dma_req(io, mod);
140 }
141
142 #define MOD_NAME_NUM 5
143 #define MOD_NAME_SIZE 16
144 char *rsnd_mod_name(struct rsnd_mod *mod)
145 {
146 static char names[MOD_NAME_NUM][MOD_NAME_SIZE];
147 static int num;
148 char *name = names[num];
149
150 num++;
151 if (num >= MOD_NAME_NUM)
152 num = 0;
153
154 /*
155 * Let's use same char to avoid pointlessness memory
156 * Thus, rsnd_mod_name() should be used immediately
157 * Don't keep pointer
158 */
159 if ((mod)->ops->id_sub) {
160 snprintf(name, MOD_NAME_SIZE, "%s[%d%d]",
161 mod->ops->name,
162 rsnd_mod_id(mod),
163 rsnd_mod_id_sub(mod));
164 } else {
165 snprintf(name, MOD_NAME_SIZE, "%s[%d]",
166 mod->ops->name,
167 rsnd_mod_id(mod));
168 }
169
170 return name;
171 }
172
173 u32 *rsnd_mod_get_status(struct rsnd_mod *mod,
174 struct rsnd_dai_stream *io,
175 enum rsnd_mod_type type)
176 {
177 return &mod->status;
178 }
179
180 int rsnd_mod_id_raw(struct rsnd_mod *mod)
181 {
182 return mod->id;
183 }
184
185 int rsnd_mod_id(struct rsnd_mod *mod)
186 {
187 if ((mod)->ops->id)
188 return (mod)->ops->id(mod);
189
190 return rsnd_mod_id_raw(mod);
191 }
192
193 int rsnd_mod_id_sub(struct rsnd_mod *mod)
194 {
195 if ((mod)->ops->id_sub)
196 return (mod)->ops->id_sub(mod);
197
198 return 0;
199 }
200
201 int rsnd_mod_init(struct rsnd_priv *priv,
202 struct rsnd_mod *mod,
203 struct rsnd_mod_ops *ops,
204 struct clk *clk,
205 enum rsnd_mod_type type,
206 int id)
207 {
208 int ret = clk_prepare(clk);
209
210 if (ret)
211 return ret;
212
213 mod->id = id;
214 mod->ops = ops;
215 mod->type = type;
216 mod->clk = clk;
217 mod->priv = priv;
218
219 return ret;
220 }
221
222 void rsnd_mod_quit(struct rsnd_mod *mod)
223 {
224 clk_unprepare(mod->clk);
225 mod->clk = NULL;
226 }
227
228 void rsnd_mod_interrupt(struct rsnd_mod *mod,
229 void (*callback)(struct rsnd_mod *mod,
230 struct rsnd_dai_stream *io))
231 {
232 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
233 struct rsnd_dai_stream *io;
234 struct rsnd_dai *rdai;
235 int i;
236
237 for_each_rsnd_dai(rdai, priv, i) {
238 io = &rdai->playback;
239 if (mod == io->mod[mod->type])
240 callback(mod, io);
241
242 io = &rdai->capture;
243 if (mod == io->mod[mod->type])
244 callback(mod, io);
245 }
246 }
247
248 int rsnd_io_is_working(struct rsnd_dai_stream *io)
249 {
250 /* see rsnd_dai_stream_init/quit() */
251 if (io->substream)
252 return snd_pcm_running(io->substream);
253
254 return 0;
255 }
256
257 int rsnd_runtime_channel_original_with_params(struct rsnd_dai_stream *io,
258 struct snd_pcm_hw_params *params)
259 {
260 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
261
262 /*
263 * params will be added when refine
264 * see
265 * __rsnd_soc_hw_rule_rate()
266 * __rsnd_soc_hw_rule_channels()
267 */
268 if (params)
269 return params_channels(params);
270 else
271 return runtime->channels;
272 }
273
274 int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io,
275 struct snd_pcm_hw_params *params)
276 {
277 int chan = rsnd_runtime_channel_original_with_params(io, params);
278 struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
279
280 if (ctu_mod) {
281 u32 converted_chan = rsnd_io_converted_chan(io);
282
283 /*
284 * !! Note !!
285 *
286 * converted_chan will be used for CTU,
287 * or TDM Split mode.
288 * User shouldn't use CTU with TDM Split mode.
289 */
290 if (rsnd_runtime_is_tdm_split(io)) {
291 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io));
292
293 dev_err(dev, "CTU and TDM Split should be used\n");
294 }
295
296 if (converted_chan)
297 return converted_chan;
298 }
299
300 return chan;
301 }
302
303 int rsnd_channel_normalization(int chan)
304 {
305 if (WARN_ON((chan > 8) || (chan < 0)))
306 return 0;
307
308 /* TDM Extend Mode needs 8ch */
309 if (chan == 6)
310 chan = 8;
311
312 return chan;
313 }
314
315 int rsnd_runtime_channel_for_ssi_with_params(struct rsnd_dai_stream *io,
316 struct snd_pcm_hw_params *params)
317 {
318 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
319 int chan = rsnd_io_is_play(io) ?
320 rsnd_runtime_channel_after_ctu_with_params(io, params) :
321 rsnd_runtime_channel_original_with_params(io, params);
322
323 /* Use Multi SSI */
324 if (rsnd_runtime_is_multi_ssi(io))
325 chan /= rsnd_rdai_ssi_lane_get(rdai);
326
327 return rsnd_channel_normalization(chan);
328 }
329
330 int rsnd_runtime_is_multi_ssi(struct rsnd_dai_stream *io)
331 {
332 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
333 int lane = rsnd_rdai_ssi_lane_get(rdai);
334 int chan = rsnd_io_is_play(io) ?
335 rsnd_runtime_channel_after_ctu(io) :
336 rsnd_runtime_channel_original(io);
337
338 return (chan > 2) && (lane > 1);
339 }
340
341 int rsnd_runtime_is_tdm(struct rsnd_dai_stream *io)
342 {
343 return rsnd_runtime_channel_for_ssi(io) >= 6;
344 }
345
346 int rsnd_runtime_is_tdm_split(struct rsnd_dai_stream *io)
347 {
348 return !!rsnd_flags_has(io, RSND_STREAM_TDM_SPLIT);
349 }
350
351 /*
352 * ADINR function
353 */
354 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
355 {
356 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
357 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
358 struct device *dev = rsnd_priv_to_dev(priv);
359
360 switch (snd_pcm_format_width(runtime->format)) {
361 case 8:
362 return 16 << 16;
363 case 16:
364 return 8 << 16;
365 case 24:
366 return 0 << 16;
367 }
368
369 dev_warn(dev, "not supported sample bits\n");
370
371 return 0;
372 }
373
374 /*
375 * DALIGN function
376 */
377 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
378 {
379 static const u32 dalign_values[8] = {
380 0x76543210, 0x00000032, 0x00007654, 0x00000076,
381 0xfedcba98, 0x000000ba, 0x0000fedc, 0x000000fe,
382 };
383 int id = 0;
384 struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
385 struct rsnd_mod *target;
386 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
387 u32 dalign;
388
389 /*
390 * *Hardware* L/R and *Software* L/R are inverted for 16bit data.
391 * 31..16 15...0
392 * HW: [L ch] [R ch]
393 * SW: [R ch] [L ch]
394 * We need to care about inversion timing to control
395 * Playback/Capture correctly.
396 * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R
397 *
398 * sL/R : software L/R
399 * hL/R : hardware L/R
400 * (*) : conversion timing
401 *
402 * Playback
403 * sL/R (*) hL/R hL/R hL/R hL/R hL/R
404 * [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec
405 *
406 * Capture
407 * hL/R hL/R hL/R hL/R hL/R (*) sL/R
408 * codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM]
409 */
410 if (rsnd_io_is_play(io)) {
411 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
412
413 target = src ? src : ssiu;
414 } else {
415 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
416
417 target = cmd ? cmd : ssiu;
418 }
419
420 if (mod == ssiu)
421 id = rsnd_mod_id_sub(mod);
422
423 dalign = dalign_values[id];
424
425 if (mod == target && snd_pcm_format_width(runtime->format) == 16) {
426 /* Target mod needs inverted DALIGN when 16bit */
427 dalign = (dalign & 0xf0f0f0f0) >> 4 |
428 (dalign & 0x0f0f0f0f) << 4;
429 }
430
431 return dalign;
432 }
433
434 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
435 {
436 enum rsnd_mod_type playback_mods[] = {
437 RSND_MOD_SRC,
438 RSND_MOD_CMD,
439 RSND_MOD_SSIU,
440 };
441 enum rsnd_mod_type capture_mods[] = {
442 RSND_MOD_CMD,
443 RSND_MOD_SRC,
444 RSND_MOD_SSIU,
445 };
446 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
447 struct rsnd_mod *tmod = NULL;
448 enum rsnd_mod_type *mods =
449 rsnd_io_is_play(io) ?
450 playback_mods : capture_mods;
451 int i;
452
453 /*
454 * This is needed for 24bit data
455 * We need to shift 8bit
456 *
457 * Linux 24bit data is located as 0x00******
458 * HW 24bit data is located as 0x******00
459 *
460 */
461 if (snd_pcm_format_width(runtime->format) != 24)
462 return 0;
463
464 for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
465 tmod = rsnd_io_to_mod(io, mods[i]);
466 if (tmod)
467 break;
468 }
469
470 if (tmod != mod)
471 return 0;
472
473 if (rsnd_io_is_play(io))
474 return (0 << 20) | /* shift to Left */
475 (8 << 16); /* 8bit */
476 else
477 return (1 << 20) | /* shift to Right */
478 (8 << 16); /* 8bit */
479 }
480
481 /*
482 * rsnd_dai functions
483 */
484 struct rsnd_mod *rsnd_mod_next(int *iterator,
485 struct rsnd_dai_stream *io,
486 enum rsnd_mod_type *array,
487 int array_size)
488 {
489 struct rsnd_mod *mod;
490 enum rsnd_mod_type type;
491 int max = array ? array_size : RSND_MOD_MAX;
492
493 for (; *iterator < max; (*iterator)++) {
494 type = (array) ? array[*iterator] : *iterator;
495 mod = rsnd_io_to_mod(io, type);
496 if (mod)
497 return mod;
498 }
499
500 return NULL;
501 }
502
503 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
504 {
505 /* CAPTURE */
506 RSND_MOD_AUDMAPP,
507 RSND_MOD_AUDMA,
508 RSND_MOD_DVC,
509 RSND_MOD_MIX,
510 RSND_MOD_CTU,
511 RSND_MOD_CMD,
512 RSND_MOD_SRC,
513 RSND_MOD_SSIU,
514 RSND_MOD_SSIM3,
515 RSND_MOD_SSIM2,
516 RSND_MOD_SSIM1,
517 RSND_MOD_SSIP,
518 RSND_MOD_SSI,
519 }, {
520 /* PLAYBACK */
521 RSND_MOD_AUDMAPP,
522 RSND_MOD_AUDMA,
523 RSND_MOD_SSIM3,
524 RSND_MOD_SSIM2,
525 RSND_MOD_SSIM1,
526 RSND_MOD_SSIP,
527 RSND_MOD_SSI,
528 RSND_MOD_SSIU,
529 RSND_MOD_DVC,
530 RSND_MOD_MIX,
531 RSND_MOD_CTU,
532 RSND_MOD_CMD,
533 RSND_MOD_SRC,
534 },
535 };
536
537 static int rsnd_status_update(u32 *status,
538 int shift, int add, int timing)
539 {
540 u32 mask = 0xF << shift;
541 u8 val = (*status >> shift) & 0xF;
542 u8 next_val = (val + add) & 0xF;
543 int func_call = (val == timing);
544
545 if (next_val == 0xF) /* underflow case */
546 func_call = 0;
547 else
548 *status = (*status & ~mask) + (next_val << shift);
549
550 return func_call;
551 }
552
553 #define rsnd_dai_call(fn, io, param...) \
554 ({ \
555 struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); \
556 struct rsnd_mod *mod; \
557 int is_play = rsnd_io_is_play(io); \
558 int ret = 0, i; \
559 enum rsnd_mod_type *types = rsnd_mod_sequence[is_play]; \
560 for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) { \
561 int tmp = 0; \
562 u32 *status = mod->ops->get_status(mod, io, types[i]); \
563 int func_call = rsnd_status_update(status, \
564 __rsnd_mod_shift_##fn, \
565 __rsnd_mod_add_##fn, \
566 __rsnd_mod_call_##fn); \
567 rsnd_dbg_dai_call(dev, "%s\t0x%08x %s\n", \
568 rsnd_mod_name(mod), *status, \
569 (func_call && (mod)->ops->fn) ? #fn : ""); \
570 if (func_call && (mod)->ops->fn) \
571 tmp = (mod)->ops->fn(mod, io, param); \
572 if (tmp && (tmp != -EPROBE_DEFER)) \
573 dev_err(dev, "%s : %s error %d\n", \
574 rsnd_mod_name(mod), #fn, tmp); \
575 ret |= tmp; \
576 } \
577 ret; \
578 })
579
580 int rsnd_dai_connect(struct rsnd_mod *mod,
581 struct rsnd_dai_stream *io,
582 enum rsnd_mod_type type)
583 {
584 struct rsnd_priv *priv;
585 struct device *dev;
586
587 if (!mod)
588 return -EIO;
589
590 if (io->mod[type] == mod)
591 return 0;
592
593 if (io->mod[type])
594 return -EINVAL;
595
596 priv = rsnd_mod_to_priv(mod);
597 dev = rsnd_priv_to_dev(priv);
598
599 io->mod[type] = mod;
600
601 dev_dbg(dev, "%s is connected to io (%s)\n",
602 rsnd_mod_name(mod),
603 rsnd_io_is_play(io) ? "Playback" : "Capture");
604
605 return 0;
606 }
607
608 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
609 struct rsnd_dai_stream *io,
610 enum rsnd_mod_type type)
611 {
612 io->mod[type] = NULL;
613 }
614
615 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
616 int max_channels)
617 {
618 if (max_channels > 0)
619 rdai->max_channels = max_channels;
620
621 return rdai->max_channels;
622 }
623
624 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
625 int ssi_lane)
626 {
627 if (ssi_lane > 0)
628 rdai->ssi_lane = ssi_lane;
629
630 return rdai->ssi_lane;
631 }
632
633 int rsnd_rdai_width_ctrl(struct rsnd_dai *rdai, int width)
634 {
635 if (width > 0)
636 rdai->chan_width = width;
637
638 return rdai->chan_width;
639 }
640
641 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
642 {
643 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
644 return NULL;
645
646 return priv->rdai + id;
647 }
648
649 static struct snd_soc_dai_driver
650 *rsnd_daidrv_get(struct rsnd_priv *priv, int id)
651 {
652 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
653 return NULL;
654
655 return priv->daidrv + id;
656 }
657
658 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
659 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
660 {
661 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
662
663 return rsnd_rdai_get(priv, dai->id);
664 }
665
666 /*
667 * rsnd_soc_dai functions
668 */
669 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
670 {
671 struct snd_pcm_substream *substream = io->substream;
672
673 /*
674 * this function should be called...
675 *
676 * - if rsnd_dai_pointer_update() returns true
677 * - without spin lock
678 */
679
680 snd_pcm_period_elapsed(substream);
681 }
682
683 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
684 struct snd_pcm_substream *substream)
685 {
686 io->substream = substream;
687 }
688
689 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
690 {
691 io->substream = NULL;
692 }
693
694 static
695 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
696 {
697 struct snd_soc_pcm_runtime *rtd = substream->private_data;
698
699 return rtd->cpu_dai;
700 }
701
702 static
703 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
704 struct snd_pcm_substream *substream)
705 {
706 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
707 return &rdai->playback;
708 else
709 return &rdai->capture;
710 }
711
712 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
713 struct snd_soc_dai *dai)
714 {
715 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
716 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
717 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
718 int ret;
719 unsigned long flags;
720
721 spin_lock_irqsave(&priv->lock, flags);
722
723 switch (cmd) {
724 case SNDRV_PCM_TRIGGER_START:
725 case SNDRV_PCM_TRIGGER_RESUME:
726 ret = rsnd_dai_call(init, io, priv);
727 if (ret < 0)
728 goto dai_trigger_end;
729
730 ret = rsnd_dai_call(start, io, priv);
731 if (ret < 0)
732 goto dai_trigger_end;
733
734 ret = rsnd_dai_call(irq, io, priv, 1);
735 if (ret < 0)
736 goto dai_trigger_end;
737
738 break;
739 case SNDRV_PCM_TRIGGER_STOP:
740 case SNDRV_PCM_TRIGGER_SUSPEND:
741 ret = rsnd_dai_call(irq, io, priv, 0);
742
743 ret |= rsnd_dai_call(stop, io, priv);
744
745 ret |= rsnd_dai_call(quit, io, priv);
746
747 break;
748 default:
749 ret = -EINVAL;
750 }
751
752 dai_trigger_end:
753 spin_unlock_irqrestore(&priv->lock, flags);
754
755 return ret;
756 }
757
758 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
759 {
760 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
761
762 /* set master/slave audio interface */
763 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
764 case SND_SOC_DAIFMT_CBM_CFM:
765 rdai->clk_master = 0;
766 break;
767 case SND_SOC_DAIFMT_CBS_CFS:
768 rdai->clk_master = 1; /* codec is slave, cpu is master */
769 break;
770 default:
771 return -EINVAL;
772 }
773
774 /* set format */
775 rdai->bit_clk_inv = 0;
776 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
777 case SND_SOC_DAIFMT_I2S:
778 rdai->sys_delay = 0;
779 rdai->data_alignment = 0;
780 rdai->frm_clk_inv = 0;
781 break;
782 case SND_SOC_DAIFMT_LEFT_J:
783 case SND_SOC_DAIFMT_DSP_B:
784 rdai->sys_delay = 1;
785 rdai->data_alignment = 0;
786 rdai->frm_clk_inv = 1;
787 break;
788 case SND_SOC_DAIFMT_RIGHT_J:
789 rdai->sys_delay = 1;
790 rdai->data_alignment = 1;
791 rdai->frm_clk_inv = 1;
792 break;
793 case SND_SOC_DAIFMT_DSP_A:
794 rdai->sys_delay = 0;
795 rdai->data_alignment = 0;
796 rdai->frm_clk_inv = 1;
797 break;
798 }
799
800 /* set clock inversion */
801 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
802 case SND_SOC_DAIFMT_NB_IF:
803 rdai->frm_clk_inv = !rdai->frm_clk_inv;
804 break;
805 case SND_SOC_DAIFMT_IB_NF:
806 rdai->bit_clk_inv = !rdai->bit_clk_inv;
807 break;
808 case SND_SOC_DAIFMT_IB_IF:
809 rdai->bit_clk_inv = !rdai->bit_clk_inv;
810 rdai->frm_clk_inv = !rdai->frm_clk_inv;
811 break;
812 case SND_SOC_DAIFMT_NB_NF:
813 default:
814 break;
815 }
816
817 return 0;
818 }
819
820 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
821 u32 tx_mask, u32 rx_mask,
822 int slots, int slot_width)
823 {
824 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
825 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
826 struct device *dev = rsnd_priv_to_dev(priv);
827
828 switch (slot_width) {
829 case 16:
830 case 24:
831 case 32:
832 break;
833 default:
834 /* use default */
835 slot_width = 32;
836 }
837
838 switch (slots) {
839 case 2:
840 /* TDM Split Mode */
841 case 6:
842 case 8:
843 /* TDM Extend Mode */
844 rsnd_rdai_channels_set(rdai, slots);
845 rsnd_rdai_ssi_lane_set(rdai, 1);
846 rsnd_rdai_width_set(rdai, slot_width);
847 break;
848 default:
849 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
850 return -EINVAL;
851 }
852
853 return 0;
854 }
855
856 static unsigned int rsnd_soc_hw_channels_list[] = {
857 2, 6, 8,
858 };
859
860 static unsigned int rsnd_soc_hw_rate_list[] = {
861 8000,
862 11025,
863 16000,
864 22050,
865 32000,
866 44100,
867 48000,
868 64000,
869 88200,
870 96000,
871 176400,
872 192000,
873 };
874
875 static int rsnd_soc_hw_rule(struct rsnd_dai *rdai,
876 unsigned int *list, int list_num,
877 struct snd_interval *baseline, struct snd_interval *iv)
878 {
879 struct snd_interval p;
880 unsigned int rate;
881 int i;
882
883 snd_interval_any(&p);
884 p.min = UINT_MAX;
885 p.max = 0;
886
887 for (i = 0; i < list_num; i++) {
888
889 if (!snd_interval_test(iv, list[i]))
890 continue;
891
892 rate = rsnd_ssi_clk_query(rdai,
893 baseline->min, list[i], NULL);
894 if (rate > 0) {
895 p.min = min(p.min, list[i]);
896 p.max = max(p.max, list[i]);
897 }
898
899 rate = rsnd_ssi_clk_query(rdai,
900 baseline->max, list[i], NULL);
901 if (rate > 0) {
902 p.min = min(p.min, list[i]);
903 p.max = max(p.max, list[i]);
904 }
905 }
906
907 return snd_interval_refine(iv, &p);
908 }
909
910 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
911 struct snd_pcm_hw_rule *rule)
912 {
913 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
914 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
915 struct snd_interval ic;
916 struct rsnd_dai_stream *io = rule->private;
917 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
918
919 /*
920 * possible sampling rate limitation is same as
921 * 2ch if it supports multi ssi
922 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
923 */
924 ic = *ic_;
925 ic.min =
926 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
927
928 return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_rate_list,
929 ARRAY_SIZE(rsnd_soc_hw_rate_list),
930 &ic, ir);
931 }
932
933 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
934 struct snd_pcm_hw_rule *rule)
935 {
936 struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
937 struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
938 struct snd_interval ic;
939 struct rsnd_dai_stream *io = rule->private;
940 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
941
942 /*
943 * possible sampling rate limitation is same as
944 * 2ch if it supports multi ssi
945 * and same as 8ch if TDM 6ch (see rsnd_ssi_config_init())
946 */
947 ic = *ic_;
948 ic.min =
949 ic.max = rsnd_runtime_channel_for_ssi_with_params(io, params);
950
951 return rsnd_soc_hw_rule(rdai, rsnd_soc_hw_channels_list,
952 ARRAY_SIZE(rsnd_soc_hw_channels_list),
953 ir, &ic);
954 }
955
956 static const struct snd_pcm_hardware rsnd_pcm_hardware = {
957 .info = SNDRV_PCM_INFO_INTERLEAVED |
958 SNDRV_PCM_INFO_MMAP |
959 SNDRV_PCM_INFO_MMAP_VALID,
960 .buffer_bytes_max = 64 * 1024,
961 .period_bytes_min = 32,
962 .period_bytes_max = 8192,
963 .periods_min = 1,
964 .periods_max = 32,
965 .fifo_size = 256,
966 };
967
968 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
969 struct snd_soc_dai *dai)
970 {
971 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
972 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
973 struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
974 struct snd_pcm_runtime *runtime = substream->runtime;
975 unsigned int max_channels = rsnd_rdai_channels_get(rdai);
976 int i;
977
978 rsnd_dai_stream_init(io, substream);
979
980 /*
981 * Channel Limitation
982 * It depends on Platform design
983 */
984 constraint->list = rsnd_soc_hw_channels_list;
985 constraint->count = 0;
986 constraint->mask = 0;
987
988 for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
989 if (rsnd_soc_hw_channels_list[i] > max_channels)
990 break;
991 constraint->count = i + 1;
992 }
993
994 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
995
996 snd_pcm_hw_constraint_list(runtime, 0,
997 SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
998
999 snd_pcm_hw_constraint_integer(runtime,
1000 SNDRV_PCM_HW_PARAM_PERIODS);
1001
1002 /*
1003 * Sampling Rate / Channel Limitation
1004 * It depends on Clock Master Mode
1005 */
1006 if (rsnd_rdai_is_clk_master(rdai)) {
1007 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
1008
1009 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1010 rsnd_soc_hw_rule_rate,
1011 is_play ? &rdai->playback : &rdai->capture,
1012 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
1013 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1014 rsnd_soc_hw_rule_channels,
1015 is_play ? &rdai->playback : &rdai->capture,
1016 SNDRV_PCM_HW_PARAM_RATE, -1);
1017 }
1018
1019 return 0;
1020 }
1021
1022 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
1023 struct snd_soc_dai *dai)
1024 {
1025 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1026 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
1027 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1028
1029 /*
1030 * call rsnd_dai_call without spinlock
1031 */
1032 rsnd_dai_call(cleanup, io, priv);
1033
1034 rsnd_dai_stream_quit(io);
1035 }
1036
1037 static int rsnd_soc_dai_prepare(struct snd_pcm_substream *substream,
1038 struct snd_soc_dai *dai)
1039 {
1040 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
1041 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1042 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1043
1044 return rsnd_dai_call(prepare, io, priv);
1045 }
1046
1047 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
1048 .startup = rsnd_soc_dai_startup,
1049 .shutdown = rsnd_soc_dai_shutdown,
1050 .trigger = rsnd_soc_dai_trigger,
1051 .set_fmt = rsnd_soc_dai_set_fmt,
1052 .set_tdm_slot = rsnd_soc_set_dai_tdm_slot,
1053 .prepare = rsnd_soc_dai_prepare,
1054 };
1055
1056 static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv,
1057 struct rsnd_dai_stream *io,
1058 struct device_node *dai_np)
1059 {
1060 struct device *dev = rsnd_priv_to_dev(priv);
1061 struct device_node *ssiu_np = rsnd_ssiu_of_node(priv);
1062 struct device_node *np;
1063 int is_play = rsnd_io_is_play(io);
1064 int i, j;
1065
1066 if (!ssiu_np)
1067 return;
1068
1069 /*
1070 * This driver assumes that it is TDM Split mode
1071 * if it includes ssiu node
1072 */
1073 for (i = 0;; i++) {
1074 struct device_node *node = is_play ?
1075 of_parse_phandle(dai_np, "playback", i) :
1076 of_parse_phandle(dai_np, "capture", i);
1077
1078 if (!node)
1079 break;
1080
1081 j = 0;
1082 for_each_child_of_node(ssiu_np, np) {
1083 if (np == node) {
1084 rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT);
1085 dev_dbg(dev, "%s is part of TDM Split\n", io->name);
1086 }
1087 j++;
1088 }
1089
1090 of_node_put(node);
1091 }
1092
1093 of_node_put(ssiu_np);
1094 }
1095
1096 static void rsnd_parse_connect_simple(struct rsnd_priv *priv,
1097 struct rsnd_dai_stream *io,
1098 struct device_node *dai_np)
1099 {
1100 if (!rsnd_io_to_mod_ssi(io))
1101 return;
1102
1103 rsnd_parse_tdm_split_mode(priv, io, dai_np);
1104 }
1105
1106 static void rsnd_parse_connect_graph(struct rsnd_priv *priv,
1107 struct rsnd_dai_stream *io,
1108 struct device_node *endpoint)
1109 {
1110 struct device *dev = rsnd_priv_to_dev(priv);
1111 struct device_node *remote_node;
1112
1113 if (!rsnd_io_to_mod_ssi(io))
1114 return;
1115
1116 remote_node = of_graph_get_remote_port_parent(endpoint);
1117
1118 /* HDMI0 */
1119 if (strstr(remote_node->full_name, "hdmi@fead0000")) {
1120 rsnd_flags_set(io, RSND_STREAM_HDMI0);
1121 dev_dbg(dev, "%s connected to HDMI0\n", io->name);
1122 }
1123
1124 /* HDMI1 */
1125 if (strstr(remote_node->full_name, "hdmi@feae0000")) {
1126 rsnd_flags_set(io, RSND_STREAM_HDMI1);
1127 dev_dbg(dev, "%s connected to HDMI1\n", io->name);
1128 }
1129
1130 rsnd_parse_tdm_split_mode(priv, io, endpoint);
1131
1132 of_node_put(remote_node);
1133 }
1134
1135 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
1136 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
1137 struct device_node *node,
1138 struct device_node *playback,
1139 struct device_node *capture)
1140 {
1141 struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
1142 struct device_node *np;
1143 struct rsnd_mod *mod;
1144 int i;
1145
1146 if (!node)
1147 return;
1148
1149 i = 0;
1150 for_each_child_of_node(node, np) {
1151 mod = mod_get(priv, i);
1152 if (np == playback)
1153 rsnd_dai_connect(mod, &rdai->playback, mod->type);
1154 if (np == capture)
1155 rsnd_dai_connect(mod, &rdai->capture, mod->type);
1156 i++;
1157 }
1158
1159 of_node_put(node);
1160 }
1161
1162 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
1163 int *is_graph)
1164 {
1165 struct device *dev = rsnd_priv_to_dev(priv);
1166 struct device_node *np = dev->of_node;
1167 struct device_node *dai_node;
1168 struct device_node *ret;
1169
1170 *is_graph = 0;
1171
1172 /*
1173 * parse both previous dai (= rcar_sound,dai), and
1174 * graph dai (= ports/port)
1175 */
1176 dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
1177 if (dai_node) {
1178 ret = dai_node;
1179 goto of_node_compatible;
1180 }
1181
1182 ret = np;
1183
1184 dai_node = of_graph_get_next_endpoint(np, NULL);
1185 if (dai_node)
1186 goto of_node_graph;
1187
1188 return NULL;
1189
1190 of_node_graph:
1191 *is_graph = 1;
1192 of_node_compatible:
1193 of_node_put(dai_node);
1194
1195 return ret;
1196 }
1197
1198
1199 #define PREALLOC_BUFFER (32 * 1024)
1200 #define PREALLOC_BUFFER_MAX (32 * 1024)
1201
1202 static int rsnd_preallocate_pages(struct snd_soc_pcm_runtime *rtd,
1203 struct rsnd_dai_stream *io,
1204 int stream)
1205 {
1206 struct rsnd_priv *priv = rsnd_io_to_priv(io);
1207 struct device *dev = rsnd_priv_to_dev(priv);
1208 struct snd_pcm_substream *substream;
1209
1210 /*
1211 * use Audio-DMAC dev if we can use IPMMU
1212 * see
1213 * rsnd_dmaen_attach()
1214 */
1215 if (io->dmac_dev)
1216 dev = io->dmac_dev;
1217
1218 for (substream = rtd->pcm->streams[stream].substream;
1219 substream;
1220 substream = substream->next) {
1221 snd_pcm_set_managed_buffer(substream,
1222 SNDRV_DMA_TYPE_DEV,
1223 dev,
1224 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1225 }
1226
1227 return 0;
1228 }
1229
1230 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd,
1231 struct snd_soc_dai *dai)
1232 {
1233 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1234 int ret;
1235
1236 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1237 if (ret)
1238 return ret;
1239
1240 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1241 if (ret)
1242 return ret;
1243
1244 ret = rsnd_preallocate_pages(rtd, &rdai->playback,
1245 SNDRV_PCM_STREAM_PLAYBACK);
1246 if (ret)
1247 return ret;
1248
1249 ret = rsnd_preallocate_pages(rtd, &rdai->capture,
1250 SNDRV_PCM_STREAM_CAPTURE);
1251 if (ret)
1252 return ret;
1253
1254 return 0;
1255 }
1256
1257 static void __rsnd_dai_probe(struct rsnd_priv *priv,
1258 struct device_node *dai_np,
1259 int dai_i)
1260 {
1261 struct device_node *playback, *capture;
1262 struct rsnd_dai_stream *io_playback;
1263 struct rsnd_dai_stream *io_capture;
1264 struct snd_soc_dai_driver *drv;
1265 struct rsnd_dai *rdai;
1266 struct device *dev = rsnd_priv_to_dev(priv);
1267 int io_i;
1268
1269 rdai = rsnd_rdai_get(priv, dai_i);
1270 drv = rsnd_daidrv_get(priv, dai_i);
1271 io_playback = &rdai->playback;
1272 io_capture = &rdai->capture;
1273
1274 snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1275
1276 rdai->priv = priv;
1277 drv->name = rdai->name;
1278 drv->ops = &rsnd_soc_dai_ops;
1279 drv->pcm_new = rsnd_pcm_new;
1280
1281 snprintf(io_playback->name, RSND_DAI_NAME_SIZE,
1282 "DAI%d Playback", dai_i);
1283 drv->playback.rates = RSND_RATES;
1284 drv->playback.formats = RSND_FMTS;
1285 drv->playback.channels_min = 2;
1286 drv->playback.channels_max = 8;
1287 drv->playback.stream_name = io_playback->name;
1288
1289 snprintf(io_capture->name, RSND_DAI_NAME_SIZE,
1290 "DAI%d Capture", dai_i);
1291 drv->capture.rates = RSND_RATES;
1292 drv->capture.formats = RSND_FMTS;
1293 drv->capture.channels_min = 2;
1294 drv->capture.channels_max = 8;
1295 drv->capture.stream_name = io_capture->name;
1296
1297 io_playback->rdai = rdai;
1298 io_capture->rdai = rdai;
1299 rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1300 rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1301 rsnd_rdai_width_set(rdai, 32); /* default 32bit width */
1302
1303 for (io_i = 0;; io_i++) {
1304 playback = of_parse_phandle(dai_np, "playback", io_i);
1305 capture = of_parse_phandle(dai_np, "capture", io_i);
1306
1307 if (!playback && !capture)
1308 break;
1309
1310 rsnd_parse_connect_ssi(rdai, playback, capture);
1311 rsnd_parse_connect_ssiu(rdai, playback, capture);
1312 rsnd_parse_connect_src(rdai, playback, capture);
1313 rsnd_parse_connect_ctu(rdai, playback, capture);
1314 rsnd_parse_connect_mix(rdai, playback, capture);
1315 rsnd_parse_connect_dvc(rdai, playback, capture);
1316
1317 of_node_put(playback);
1318 of_node_put(capture);
1319 }
1320
1321 if (rsnd_ssi_is_pin_sharing(io_capture) ||
1322 rsnd_ssi_is_pin_sharing(io_playback)) {
1323 /* should have symmetric_rates if pin sharing */
1324 drv->symmetric_rates = 1;
1325 }
1326
1327 dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1328 rsnd_io_to_mod_ssi(io_playback) ? "play" : " -- ",
1329 rsnd_io_to_mod_ssi(io_capture) ? "capture" : " -- ");
1330 }
1331
1332 static int rsnd_dai_probe(struct rsnd_priv *priv)
1333 {
1334 struct device_node *dai_node;
1335 struct device_node *dai_np;
1336 struct snd_soc_dai_driver *rdrv;
1337 struct device *dev = rsnd_priv_to_dev(priv);
1338 struct rsnd_dai *rdai;
1339 int nr;
1340 int is_graph;
1341 int dai_i;
1342
1343 dai_node = rsnd_dai_of_node(priv, &is_graph);
1344 if (is_graph)
1345 nr = of_graph_get_endpoint_count(dai_node);
1346 else
1347 nr = of_get_child_count(dai_node);
1348
1349 if (!nr)
1350 return -EINVAL;
1351
1352 rdrv = devm_kcalloc(dev, nr, sizeof(*rdrv), GFP_KERNEL);
1353 rdai = devm_kcalloc(dev, nr, sizeof(*rdai), GFP_KERNEL);
1354 if (!rdrv || !rdai)
1355 return -ENOMEM;
1356
1357 priv->rdai_nr = nr;
1358 priv->daidrv = rdrv;
1359 priv->rdai = rdai;
1360
1361 /*
1362 * parse all dai
1363 */
1364 dai_i = 0;
1365 if (is_graph) {
1366 for_each_endpoint_of_node(dai_node, dai_np) {
1367 __rsnd_dai_probe(priv, dai_np, dai_i);
1368 if (rsnd_is_gen3(priv)) {
1369 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1370
1371 rsnd_parse_connect_graph(priv, &rdai->playback, dai_np);
1372 rsnd_parse_connect_graph(priv, &rdai->capture, dai_np);
1373 }
1374 dai_i++;
1375 }
1376 } else {
1377 for_each_child_of_node(dai_node, dai_np) {
1378 __rsnd_dai_probe(priv, dai_np, dai_i);
1379 if (rsnd_is_gen3(priv)) {
1380 struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
1381
1382 rsnd_parse_connect_simple(priv, &rdai->playback, dai_np);
1383 rsnd_parse_connect_simple(priv, &rdai->capture, dai_np);
1384 }
1385 dai_i++;
1386 }
1387 }
1388
1389 return 0;
1390 }
1391
1392 /*
1393 * pcm ops
1394 */
1395 static int rsnd_hw_params(struct snd_soc_component *component,
1396 struct snd_pcm_substream *substream,
1397 struct snd_pcm_hw_params *hw_params)
1398 {
1399 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1400 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1401 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1402 struct snd_soc_pcm_runtime *fe = substream->private_data;
1403
1404 /*
1405 * rsnd assumes that it might be used under DPCM if user want to use
1406 * channel / rate convert. Then, rsnd should be FE.
1407 * And then, this function will be called *after* BE settings.
1408 * this means, each BE already has fixuped hw_params.
1409 * see
1410 * dpcm_fe_dai_hw_params()
1411 * dpcm_be_dai_hw_params()
1412 */
1413 io->converted_rate = 0;
1414 io->converted_chan = 0;
1415 if (fe->dai_link->dynamic) {
1416 struct rsnd_priv *priv = rsnd_io_to_priv(io);
1417 struct device *dev = rsnd_priv_to_dev(priv);
1418 struct snd_soc_dpcm *dpcm;
1419 struct snd_pcm_hw_params *be_params;
1420 int stream = substream->stream;
1421
1422 for_each_dpcm_be(fe, stream, dpcm) {
1423 be_params = &dpcm->hw_params;
1424 if (params_channels(hw_params) != params_channels(be_params))
1425 io->converted_chan = params_channels(be_params);
1426 if (params_rate(hw_params) != params_rate(be_params))
1427 io->converted_rate = params_rate(be_params);
1428 }
1429 if (io->converted_chan)
1430 dev_dbg(dev, "convert channels = %d\n", io->converted_chan);
1431 if (io->converted_rate)
1432 dev_dbg(dev, "convert rate = %d\n", io->converted_rate);
1433 }
1434
1435 return rsnd_dai_call(hw_params, io, substream, hw_params);
1436 }
1437
1438 static int rsnd_hw_free(struct snd_soc_component *component,
1439 struct snd_pcm_substream *substream)
1440 {
1441 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1442 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1443 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1444
1445 return rsnd_dai_call(hw_free, io, substream);
1446 }
1447
1448 static snd_pcm_uframes_t rsnd_pointer(struct snd_soc_component *component,
1449 struct snd_pcm_substream *substream)
1450 {
1451 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1452 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1453 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1454 snd_pcm_uframes_t pointer = 0;
1455
1456 rsnd_dai_call(pointer, io, &pointer);
1457
1458 return pointer;
1459 }
1460
1461 /*
1462 * snd_kcontrol
1463 */
1464 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1465 struct snd_ctl_elem_info *uinfo)
1466 {
1467 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1468
1469 if (cfg->texts) {
1470 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1471 uinfo->count = cfg->size;
1472 uinfo->value.enumerated.items = cfg->max;
1473 if (uinfo->value.enumerated.item >= cfg->max)
1474 uinfo->value.enumerated.item = cfg->max - 1;
1475 strlcpy(uinfo->value.enumerated.name,
1476 cfg->texts[uinfo->value.enumerated.item],
1477 sizeof(uinfo->value.enumerated.name));
1478 } else {
1479 uinfo->count = cfg->size;
1480 uinfo->value.integer.min = 0;
1481 uinfo->value.integer.max = cfg->max;
1482 uinfo->type = (cfg->max == 1) ?
1483 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1484 SNDRV_CTL_ELEM_TYPE_INTEGER;
1485 }
1486
1487 return 0;
1488 }
1489
1490 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1491 struct snd_ctl_elem_value *uc)
1492 {
1493 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1494 int i;
1495
1496 for (i = 0; i < cfg->size; i++)
1497 if (cfg->texts)
1498 uc->value.enumerated.item[i] = cfg->val[i];
1499 else
1500 uc->value.integer.value[i] = cfg->val[i];
1501
1502 return 0;
1503 }
1504
1505 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1506 struct snd_ctl_elem_value *uc)
1507 {
1508 struct rsnd_kctrl_cfg *cfg = snd_kcontrol_chip(kctrl);
1509 int i, change = 0;
1510
1511 if (!cfg->accept(cfg->io))
1512 return 0;
1513
1514 for (i = 0; i < cfg->size; i++) {
1515 if (cfg->texts) {
1516 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1517 cfg->val[i] = uc->value.enumerated.item[i];
1518 } else {
1519 change |= (uc->value.integer.value[i] != cfg->val[i]);
1520 cfg->val[i] = uc->value.integer.value[i];
1521 }
1522 }
1523
1524 if (change && cfg->update)
1525 cfg->update(cfg->io, cfg->mod);
1526
1527 return change;
1528 }
1529
1530 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1531 {
1532 return 1;
1533 }
1534
1535 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1536 {
1537 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1538 struct rsnd_priv *priv = rsnd_io_to_priv(io);
1539 struct device *dev = rsnd_priv_to_dev(priv);
1540
1541 if (!runtime) {
1542 dev_warn(dev, "Can't update kctrl when idle\n");
1543 return 0;
1544 }
1545
1546 return 1;
1547 }
1548
1549 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1550 {
1551 cfg->cfg.val = cfg->val;
1552
1553 return &cfg->cfg;
1554 }
1555
1556 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1557 {
1558 cfg->cfg.val = &cfg->val;
1559
1560 return &cfg->cfg;
1561 }
1562
1563 const char * const volume_ramp_rate[] = {
1564 "128 dB/1 step", /* 00000 */
1565 "64 dB/1 step", /* 00001 */
1566 "32 dB/1 step", /* 00010 */
1567 "16 dB/1 step", /* 00011 */
1568 "8 dB/1 step", /* 00100 */
1569 "4 dB/1 step", /* 00101 */
1570 "2 dB/1 step", /* 00110 */
1571 "1 dB/1 step", /* 00111 */
1572 "0.5 dB/1 step", /* 01000 */
1573 "0.25 dB/1 step", /* 01001 */
1574 "0.125 dB/1 step", /* 01010 = VOLUME_RAMP_MAX_MIX */
1575 "0.125 dB/2 steps", /* 01011 */
1576 "0.125 dB/4 steps", /* 01100 */
1577 "0.125 dB/8 steps", /* 01101 */
1578 "0.125 dB/16 steps", /* 01110 */
1579 "0.125 dB/32 steps", /* 01111 */
1580 "0.125 dB/64 steps", /* 10000 */
1581 "0.125 dB/128 steps", /* 10001 */
1582 "0.125 dB/256 steps", /* 10010 */
1583 "0.125 dB/512 steps", /* 10011 */
1584 "0.125 dB/1024 steps", /* 10100 */
1585 "0.125 dB/2048 steps", /* 10101 */
1586 "0.125 dB/4096 steps", /* 10110 */
1587 "0.125 dB/8192 steps", /* 10111 = VOLUME_RAMP_MAX_DVC */
1588 };
1589
1590 int rsnd_kctrl_new(struct rsnd_mod *mod,
1591 struct rsnd_dai_stream *io,
1592 struct snd_soc_pcm_runtime *rtd,
1593 const unsigned char *name,
1594 int (*accept)(struct rsnd_dai_stream *io),
1595 void (*update)(struct rsnd_dai_stream *io,
1596 struct rsnd_mod *mod),
1597 struct rsnd_kctrl_cfg *cfg,
1598 const char * const *texts,
1599 int size,
1600 u32 max)
1601 {
1602 struct snd_card *card = rtd->card->snd_card;
1603 struct snd_kcontrol *kctrl;
1604 struct snd_kcontrol_new knew = {
1605 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1606 .name = name,
1607 .info = rsnd_kctrl_info,
1608 .index = rtd->num,
1609 .get = rsnd_kctrl_get,
1610 .put = rsnd_kctrl_put,
1611 };
1612 int ret;
1613
1614 /*
1615 * 1) Avoid duplicate register for DVC with MIX case
1616 * 2) Allow duplicate register for MIX
1617 * 3) re-register if card was rebinded
1618 */
1619 list_for_each_entry(kctrl, &card->controls, list) {
1620 struct rsnd_kctrl_cfg *c = kctrl->private_data;
1621
1622 if (c == cfg)
1623 return 0;
1624 }
1625
1626 if (size > RSND_MAX_CHANNELS)
1627 return -EINVAL;
1628
1629 kctrl = snd_ctl_new1(&knew, cfg);
1630 if (!kctrl)
1631 return -ENOMEM;
1632
1633 ret = snd_ctl_add(card, kctrl);
1634 if (ret < 0)
1635 return ret;
1636
1637 cfg->texts = texts;
1638 cfg->max = max;
1639 cfg->size = size;
1640 cfg->accept = accept;
1641 cfg->update = update;
1642 cfg->card = card;
1643 cfg->kctrl = kctrl;
1644 cfg->io = io;
1645 cfg->mod = mod;
1646
1647 return 0;
1648 }
1649
1650 /*
1651 * snd_soc_component
1652 */
1653 static const struct snd_soc_component_driver rsnd_soc_component = {
1654 .name = "rsnd",
1655 .hw_params = rsnd_hw_params,
1656 .hw_free = rsnd_hw_free,
1657 .pointer = rsnd_pointer,
1658 };
1659
1660 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1661 struct rsnd_dai_stream *io)
1662 {
1663 int ret;
1664
1665 ret = rsnd_dai_call(probe, io, priv);
1666 if (ret == -EAGAIN) {
1667 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1668 struct rsnd_mod *mod;
1669 int i;
1670
1671 /*
1672 * Fallback to PIO mode
1673 */
1674
1675 /*
1676 * call "remove" for SSI/SRC/DVC
1677 * SSI will be switch to PIO mode if it was DMA mode
1678 * see
1679 * rsnd_dma_init()
1680 * rsnd_ssi_fallback()
1681 */
1682 rsnd_dai_call(remove, io, priv);
1683
1684 /*
1685 * remove all mod from io
1686 * and, re connect ssi
1687 */
1688 for_each_rsnd_mod(i, mod, io)
1689 rsnd_dai_disconnect(mod, io, i);
1690 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1691
1692 /*
1693 * fallback
1694 */
1695 rsnd_dai_call(fallback, io, priv);
1696
1697 /*
1698 * retry to "probe".
1699 * DAI has SSI which is PIO mode only now.
1700 */
1701 ret = rsnd_dai_call(probe, io, priv);
1702 }
1703
1704 return ret;
1705 }
1706
1707 /*
1708 * rsnd probe
1709 */
1710 static int rsnd_probe(struct platform_device *pdev)
1711 {
1712 struct rsnd_priv *priv;
1713 struct device *dev = &pdev->dev;
1714 struct rsnd_dai *rdai;
1715 int (*probe_func[])(struct rsnd_priv *priv) = {
1716 rsnd_gen_probe,
1717 rsnd_dma_probe,
1718 rsnd_ssi_probe,
1719 rsnd_ssiu_probe,
1720 rsnd_src_probe,
1721 rsnd_ctu_probe,
1722 rsnd_mix_probe,
1723 rsnd_dvc_probe,
1724 rsnd_cmd_probe,
1725 rsnd_adg_probe,
1726 rsnd_dai_probe,
1727 };
1728 int ret, i;
1729
1730 /*
1731 * init priv data
1732 */
1733 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1734 if (!priv)
1735 return -ENODEV;
1736
1737 priv->pdev = pdev;
1738 priv->flags = (unsigned long)of_device_get_match_data(dev);
1739 spin_lock_init(&priv->lock);
1740
1741 /*
1742 * init each module
1743 */
1744 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1745 ret = probe_func[i](priv);
1746 if (ret)
1747 return ret;
1748 }
1749
1750 for_each_rsnd_dai(rdai, priv, i) {
1751 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1752 if (ret)
1753 goto exit_snd_probe;
1754
1755 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1756 if (ret)
1757 goto exit_snd_probe;
1758 }
1759
1760 dev_set_drvdata(dev, priv);
1761
1762 /*
1763 * asoc register
1764 */
1765 ret = devm_snd_soc_register_component(dev, &rsnd_soc_component,
1766 priv->daidrv, rsnd_rdai_nr(priv));
1767 if (ret < 0) {
1768 dev_err(dev, "cannot snd dai register\n");
1769 goto exit_snd_probe;
1770 }
1771
1772 pm_runtime_enable(dev);
1773
1774 dev_info(dev, "probed\n");
1775 return ret;
1776
1777 exit_snd_probe:
1778 for_each_rsnd_dai(rdai, priv, i) {
1779 rsnd_dai_call(remove, &rdai->playback, priv);
1780 rsnd_dai_call(remove, &rdai->capture, priv);
1781 }
1782
1783 /*
1784 * adg is very special mod which can't use rsnd_dai_call(remove),
1785 * and it registers ADG clock on probe.
1786 * It should be unregister if probe failed.
1787 * Mainly it is assuming -EPROBE_DEFER case
1788 */
1789 rsnd_adg_remove(priv);
1790
1791 return ret;
1792 }
1793
1794 static int rsnd_remove(struct platform_device *pdev)
1795 {
1796 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1797 struct rsnd_dai *rdai;
1798 void (*remove_func[])(struct rsnd_priv *priv) = {
1799 rsnd_ssi_remove,
1800 rsnd_ssiu_remove,
1801 rsnd_src_remove,
1802 rsnd_ctu_remove,
1803 rsnd_mix_remove,
1804 rsnd_dvc_remove,
1805 rsnd_cmd_remove,
1806 rsnd_adg_remove,
1807 };
1808 int ret = 0, i;
1809
1810 pm_runtime_disable(&pdev->dev);
1811
1812 for_each_rsnd_dai(rdai, priv, i) {
1813 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1814 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1815 }
1816
1817 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1818 remove_func[i](priv);
1819
1820 return ret;
1821 }
1822
1823 static int __maybe_unused rsnd_suspend(struct device *dev)
1824 {
1825 struct rsnd_priv *priv = dev_get_drvdata(dev);
1826
1827 rsnd_adg_clk_disable(priv);
1828
1829 return 0;
1830 }
1831
1832 static int __maybe_unused rsnd_resume(struct device *dev)
1833 {
1834 struct rsnd_priv *priv = dev_get_drvdata(dev);
1835
1836 rsnd_adg_clk_enable(priv);
1837
1838 return 0;
1839 }
1840
1841 static const struct dev_pm_ops rsnd_pm_ops = {
1842 SET_SYSTEM_SLEEP_PM_OPS(rsnd_suspend, rsnd_resume)
1843 };
1844
1845 static struct platform_driver rsnd_driver = {
1846 .driver = {
1847 .name = "rcar_sound",
1848 .pm = &rsnd_pm_ops,
1849 .of_match_table = rsnd_of_match,
1850 },
1851 .probe = rsnd_probe,
1852 .remove = rsnd_remove,
1853 };
1854 module_platform_driver(rsnd_driver);
1855
1856 MODULE_LICENSE("GPL v2");
1857 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1858 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1859 MODULE_ALIAS("platform:rcar-pcm-audio");
Linux with added FPC-III support