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[mirror_ubuntu-artful-kernel.git] / sound / soc / sh / rcar / core.c
1 /*
2 * Renesas R-Car SRU/SCU/SSIU/SSI support
3 *
4 * Copyright (C) 2013 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * Based on fsi.c
8 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 /*
16 * Renesas R-Car sound device structure
17 *
18 * Gen1
19 *
20 * SRU : Sound Routing Unit
21 * - SRC : Sampling Rate Converter
22 * - CMD
23 * - CTU : Channel Count Conversion Unit
24 * - MIX : Mixer
25 * - DVC : Digital Volume and Mute Function
26 * - SSI : Serial Sound Interface
27 *
28 * Gen2
29 *
30 * SCU : Sampling Rate Converter Unit
31 * - SRC : Sampling Rate Converter
32 * - CMD
33 * - CTU : Channel Count Conversion Unit
34 * - MIX : Mixer
35 * - DVC : Digital Volume and Mute Function
36 * SSIU : Serial Sound Interface Unit
37 * - SSI : Serial Sound Interface
38 */
39
40 /*
41 * driver data Image
42 *
43 * rsnd_priv
44 * |
45 * | ** this depends on Gen1/Gen2
46 * |
47 * +- gen
48 * |
49 * | ** these depend on data path
50 * | ** gen and platform data control it
51 * |
52 * +- rdai[0]
53 * | | sru ssiu ssi
54 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
55 * | |
56 * | | sru ssiu ssi
57 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
58 * |
59 * +- rdai[1]
60 * | | sru ssiu ssi
61 * | +- playback -> [mod] -> [mod] -> [mod] -> ...
62 * | |
63 * | | sru ssiu ssi
64 * | +- capture -> [mod] -> [mod] -> [mod] -> ...
65 * ...
66 * |
67 * | ** these control ssi
68 * |
69 * +- ssi
70 * | |
71 * | +- ssi[0]
72 * | +- ssi[1]
73 * | +- ssi[2]
74 * | ...
75 * |
76 * | ** these control src
77 * |
78 * +- src
79 * |
80 * +- src[0]
81 * +- src[1]
82 * +- src[2]
83 * ...
84 *
85 *
86 * for_each_rsnd_dai(xx, priv, xx)
87 * rdai[0] => rdai[1] => rdai[2] => ...
88 *
89 * for_each_rsnd_mod(xx, rdai, xx)
90 * [mod] => [mod] => [mod] => ...
91 *
92 * rsnd_dai_call(xxx, fn )
93 * [mod]->fn() -> [mod]->fn() -> [mod]->fn()...
94 *
95 */
96 #include <linux/pm_runtime.h>
97 #include "rsnd.h"
98
99 #define RSND_RATES SNDRV_PCM_RATE_8000_96000
100 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
101
102 static const struct rsnd_of_data rsnd_of_data_gen1 = {
103 .flags = RSND_GEN1,
104 };
105
106 static const struct rsnd_of_data rsnd_of_data_gen2 = {
107 .flags = RSND_GEN2,
108 };
109
110 static const struct of_device_id rsnd_of_match[] = {
111 { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 },
112 { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 },
113 { .compatible = "renesas,rcar_sound-gen3", .data = &rsnd_of_data_gen2 }, /* gen2 compatible */
114 {},
115 };
116 MODULE_DEVICE_TABLE(of, rsnd_of_match);
117
118 /*
119 * rsnd_platform functions
120 */
121 #define rsnd_platform_call(priv, dai, func, param...) \
122 (!(priv->info->func) ? 0 : \
123 priv->info->func(param))
124
125 #define rsnd_is_enable_path(io, name) \
126 ((io)->info ? (io)->info->name : NULL)
127 #define rsnd_info_id(priv, io, name) \
128 ((io)->info->name - priv->info->name##_info)
129
130 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
131 {
132 if (mod->type != type) {
133 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
134 struct device *dev = rsnd_priv_to_dev(priv);
135
136 dev_warn(dev, "%s[%d] is not your expected module\n",
137 rsnd_mod_name(mod), rsnd_mod_id(mod));
138 }
139 }
140
141 /*
142 * rsnd_mod functions
143 */
144 char *rsnd_mod_name(struct rsnd_mod *mod)
145 {
146 if (!mod || !mod->ops)
147 return "unknown";
148
149 return mod->ops->name;
150 }
151
152 struct dma_chan *rsnd_mod_dma_req(struct rsnd_dai_stream *io,
153 struct rsnd_mod *mod)
154 {
155 if (!mod || !mod->ops || !mod->ops->dma_req)
156 return NULL;
157
158 return mod->ops->dma_req(io, mod);
159 }
160
161 int rsnd_mod_init(struct rsnd_priv *priv,
162 struct rsnd_mod *mod,
163 struct rsnd_mod_ops *ops,
164 struct clk *clk,
165 enum rsnd_mod_type type,
166 int id)
167 {
168 int ret = clk_prepare(clk);
169
170 if (ret)
171 return ret;
172
173 mod->id = id;
174 mod->ops = ops;
175 mod->type = type;
176 mod->clk = clk;
177 mod->priv = priv;
178
179 return ret;
180 }
181
182 void rsnd_mod_quit(struct rsnd_mod *mod)
183 {
184 if (mod->clk)
185 clk_unprepare(mod->clk);
186 }
187
188 void rsnd_mod_interrupt(struct rsnd_mod *mod,
189 void (*callback)(struct rsnd_mod *mod,
190 struct rsnd_dai_stream *io))
191 {
192 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
193 struct rsnd_dai_stream *io;
194 struct rsnd_dai *rdai;
195 int i, j;
196
197 for_each_rsnd_dai(rdai, priv, j) {
198
199 for (i = 0; i < RSND_MOD_MAX; i++) {
200 io = &rdai->playback;
201 if (mod == io->mod[i])
202 callback(mod, io);
203
204 io = &rdai->capture;
205 if (mod == io->mod[i])
206 callback(mod, io);
207 }
208 }
209 }
210
211 int rsnd_io_is_working(struct rsnd_dai_stream *io)
212 {
213 /* see rsnd_dai_stream_init/quit() */
214 return !!io->substream;
215 }
216
217 /*
218 * ADINR function
219 */
220 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
221 {
222 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
223 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
224 struct device *dev = rsnd_priv_to_dev(priv);
225 u32 adinr = runtime->channels;
226
227 switch (runtime->sample_bits) {
228 case 16:
229 adinr |= (8 << 16);
230 break;
231 case 32:
232 adinr |= (0 << 16);
233 break;
234 default:
235 dev_warn(dev, "not supported sample bits\n");
236 return 0;
237 }
238
239 return adinr;
240 }
241
242 u32 rsnd_get_adinr_chan(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
243 {
244 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
245 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
246 struct device *dev = rsnd_priv_to_dev(priv);
247 u32 chan = runtime->channels;
248
249 switch (chan) {
250 case 1:
251 case 2:
252 case 4:
253 case 6:
254 case 8:
255 break;
256 default:
257 dev_warn(dev, "not supported channel\n");
258 chan = 0;
259 break;
260 }
261
262 return chan;
263 }
264
265 /*
266 * DALIGN function
267 */
268 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
269 {
270 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
271 struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
272 struct rsnd_mod *target = src ? src : ssi;
273 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
274 u32 val = 0x76543210;
275 u32 mask = ~0;
276
277 mask <<= runtime->channels * 4;
278 val = val & mask;
279
280 switch (runtime->sample_bits) {
281 case 16:
282 val |= 0x67452301 & ~mask;
283 break;
284 case 32:
285 val |= 0x76543210 & ~mask;
286 break;
287 }
288
289 /*
290 * exchange channeles on SRC if possible,
291 * otherwise, R/L volume settings on DVC
292 * changes inverted channels
293 */
294 if (mod == target)
295 return val;
296 else
297 return 0x76543210;
298 }
299
300 /*
301 * rsnd_dai functions
302 */
303 #define rsnd_mod_call(mod, io, func, param...) \
304 ({ \
305 struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
306 struct device *dev = rsnd_priv_to_dev(priv); \
307 u32 mask = 0xF << __rsnd_mod_shift_##func; \
308 u8 val = (mod->status >> __rsnd_mod_shift_##func) & 0xF; \
309 u8 add = ((val + __rsnd_mod_add_##func) & 0xF); \
310 int ret = 0; \
311 int call = (val == __rsnd_mod_call_##func) && (mod)->ops->func; \
312 mod->status = (mod->status & ~mask) + \
313 (add << __rsnd_mod_shift_##func); \
314 dev_dbg(dev, "%s[%d]\t0x%08x %s\n", \
315 rsnd_mod_name(mod), rsnd_mod_id(mod), \
316 mod->status, call ? #func : ""); \
317 if (call) \
318 ret = (mod)->ops->func(mod, io, param); \
319 ret; \
320 })
321
322 #define rsnd_dai_call(fn, io, param...) \
323 ({ \
324 struct rsnd_mod *mod; \
325 int ret = 0, i; \
326 for (i = 0; i < RSND_MOD_MAX; i++) { \
327 mod = (io)->mod[i]; \
328 if (!mod) \
329 continue; \
330 ret |= rsnd_mod_call(mod, io, fn, param); \
331 } \
332 ret; \
333 })
334
335 static int rsnd_dai_connect(struct rsnd_mod *mod,
336 struct rsnd_dai_stream *io)
337 {
338 struct rsnd_priv *priv;
339 struct device *dev;
340
341 if (!mod)
342 return -EIO;
343
344 priv = rsnd_mod_to_priv(mod);
345 dev = rsnd_priv_to_dev(priv);
346
347 io->mod[mod->type] = mod;
348
349 dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
350 rsnd_mod_name(mod), rsnd_mod_id(mod),
351 rsnd_io_is_play(io) ? "Playback" : "Capture");
352
353 return 0;
354 }
355
356 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
357 struct rsnd_dai_stream *io)
358 {
359 io->mod[mod->type] = NULL;
360 }
361
362 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
363 {
364 if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
365 return NULL;
366
367 return priv->rdai + id;
368 }
369
370 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
371 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
372 {
373 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
374
375 return rsnd_rdai_get(priv, dai->id);
376 }
377
378 /*
379 * rsnd_soc_dai functions
380 */
381 int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional)
382 {
383 struct snd_pcm_substream *substream = io->substream;
384 struct snd_pcm_runtime *runtime = substream->runtime;
385 int pos = io->byte_pos + additional;
386
387 pos %= (runtime->periods * io->byte_per_period);
388
389 return pos;
390 }
391
392 bool rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int byte)
393 {
394 io->byte_pos += byte;
395
396 if (io->byte_pos >= io->next_period_byte) {
397 struct snd_pcm_substream *substream = io->substream;
398 struct snd_pcm_runtime *runtime = substream->runtime;
399
400 io->period_pos++;
401 io->next_period_byte += io->byte_per_period;
402
403 if (io->period_pos >= runtime->periods) {
404 io->byte_pos = 0;
405 io->period_pos = 0;
406 io->next_period_byte = io->byte_per_period;
407 }
408
409 return true;
410 }
411
412 return false;
413 }
414
415 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
416 {
417 struct snd_pcm_substream *substream = io->substream;
418
419 /*
420 * this function should be called...
421 *
422 * - if rsnd_dai_pointer_update() returns true
423 * - without spin lock
424 */
425
426 snd_pcm_period_elapsed(substream);
427 }
428
429 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
430 struct snd_pcm_substream *substream)
431 {
432 struct snd_pcm_runtime *runtime = substream->runtime;
433
434 io->substream = substream;
435 io->byte_pos = 0;
436 io->period_pos = 0;
437 io->byte_per_period = runtime->period_size *
438 runtime->channels *
439 samples_to_bytes(runtime, 1);
440 io->next_period_byte = io->byte_per_period;
441 }
442
443 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
444 {
445 io->substream = NULL;
446 }
447
448 static
449 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
450 {
451 struct snd_soc_pcm_runtime *rtd = substream->private_data;
452
453 return rtd->cpu_dai;
454 }
455
456 static
457 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
458 struct snd_pcm_substream *substream)
459 {
460 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
461 return &rdai->playback;
462 else
463 return &rdai->capture;
464 }
465
466 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
467 struct snd_soc_dai *dai)
468 {
469 struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
470 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
471 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
472 int ssi_id = rsnd_mod_id(rsnd_io_to_mod_ssi(io));
473 int ret;
474 unsigned long flags;
475
476 spin_lock_irqsave(&priv->lock, flags);
477
478 switch (cmd) {
479 case SNDRV_PCM_TRIGGER_START:
480 rsnd_dai_stream_init(io, substream);
481
482 ret = rsnd_platform_call(priv, dai, start, ssi_id);
483 if (ret < 0)
484 goto dai_trigger_end;
485
486 ret = rsnd_dai_call(init, io, priv);
487 if (ret < 0)
488 goto dai_trigger_end;
489
490 ret = rsnd_dai_call(start, io, priv);
491 if (ret < 0)
492 goto dai_trigger_end;
493 break;
494 case SNDRV_PCM_TRIGGER_STOP:
495 ret = rsnd_dai_call(stop, io, priv);
496
497 ret |= rsnd_dai_call(quit, io, priv);
498
499 ret |= rsnd_platform_call(priv, dai, stop, ssi_id);
500
501 rsnd_dai_stream_quit(io);
502 break;
503 default:
504 ret = -EINVAL;
505 }
506
507 dai_trigger_end:
508 spin_unlock_irqrestore(&priv->lock, flags);
509
510 return ret;
511 }
512
513 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
514 {
515 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
516
517 /* set master/slave audio interface */
518 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
519 case SND_SOC_DAIFMT_CBM_CFM:
520 rdai->clk_master = 0;
521 break;
522 case SND_SOC_DAIFMT_CBS_CFS:
523 rdai->clk_master = 1; /* codec is slave, cpu is master */
524 break;
525 default:
526 return -EINVAL;
527 }
528
529 /* set format */
530 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
531 case SND_SOC_DAIFMT_I2S:
532 rdai->sys_delay = 0;
533 rdai->data_alignment = 0;
534 rdai->frm_clk_inv = 0;
535 break;
536 case SND_SOC_DAIFMT_LEFT_J:
537 rdai->sys_delay = 1;
538 rdai->data_alignment = 0;
539 rdai->frm_clk_inv = 1;
540 break;
541 case SND_SOC_DAIFMT_RIGHT_J:
542 rdai->sys_delay = 1;
543 rdai->data_alignment = 1;
544 rdai->frm_clk_inv = 1;
545 break;
546 }
547
548 /* set clock inversion */
549 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
550 case SND_SOC_DAIFMT_NB_IF:
551 rdai->bit_clk_inv = rdai->bit_clk_inv;
552 rdai->frm_clk_inv = !rdai->frm_clk_inv;
553 break;
554 case SND_SOC_DAIFMT_IB_NF:
555 rdai->bit_clk_inv = !rdai->bit_clk_inv;
556 rdai->frm_clk_inv = rdai->frm_clk_inv;
557 break;
558 case SND_SOC_DAIFMT_IB_IF:
559 rdai->bit_clk_inv = !rdai->bit_clk_inv;
560 rdai->frm_clk_inv = !rdai->frm_clk_inv;
561 break;
562 case SND_SOC_DAIFMT_NB_NF:
563 default:
564 break;
565 }
566
567 return 0;
568 }
569
570 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
571 .trigger = rsnd_soc_dai_trigger,
572 .set_fmt = rsnd_soc_dai_set_fmt,
573 };
574
575 #define rsnd_path_add(priv, io, type) \
576 ({ \
577 struct rsnd_mod *mod; \
578 int ret = 0; \
579 int id = -1; \
580 \
581 if (rsnd_is_enable_path(io, type)) { \
582 id = rsnd_info_id(priv, io, type); \
583 if (id >= 0) { \
584 mod = rsnd_##type##_mod_get(priv, id); \
585 ret = rsnd_dai_connect(mod, io); \
586 } \
587 } \
588 ret; \
589 })
590
591 #define rsnd_path_remove(priv, io, type) \
592 { \
593 struct rsnd_mod *mod; \
594 int id = -1; \
595 \
596 if (rsnd_is_enable_path(io, type)) { \
597 id = rsnd_info_id(priv, io, type); \
598 if (id >= 0) { \
599 mod = rsnd_##type##_mod_get(priv, id); \
600 rsnd_dai_disconnect(mod, io); \
601 } \
602 } \
603 }
604
605 void rsnd_path_parse(struct rsnd_priv *priv,
606 struct rsnd_dai_stream *io)
607 {
608 struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
609 struct rsnd_mod *mix = rsnd_io_to_mod_mix(io);
610 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
611 struct rsnd_mod *cmd;
612 struct device *dev = rsnd_priv_to_dev(priv);
613 u32 data;
614
615 /* Gen1 is not supported */
616 if (rsnd_is_gen1(priv))
617 return;
618
619 if (!mix && !dvc)
620 return;
621
622 if (mix) {
623 struct rsnd_dai *rdai;
624 int i;
625 u32 path[] = {
626 [0] = 0,
627 [1] = 1 << 0,
628 [2] = 0,
629 [3] = 0,
630 [4] = 0,
631 [5] = 1 << 8
632 };
633
634 /*
635 * it is assuming that integrater is well understanding about
636 * data path. Here doesn't check impossible connection,
637 * like src2 + src5
638 */
639 data = 0;
640 for_each_rsnd_dai(rdai, priv, i) {
641 io = &rdai->playback;
642 if (mix == rsnd_io_to_mod_mix(io))
643 data |= path[rsnd_mod_id(src)];
644
645 io = &rdai->capture;
646 if (mix == rsnd_io_to_mod_mix(io))
647 data |= path[rsnd_mod_id(src)];
648 }
649
650 /*
651 * We can't use ctu = rsnd_io_ctu() here.
652 * Since, ID of dvc/mix are 0 or 1 (= same as CMD number)
653 * but ctu IDs are 0 - 7 (= CTU00 - CTU13)
654 */
655 cmd = mix;
656 } else {
657 u32 path[] = {
658 [0] = 0x30000,
659 [1] = 0x30001,
660 [2] = 0x40000,
661 [3] = 0x10000,
662 [4] = 0x20000,
663 [5] = 0x40100
664 };
665
666 data = path[rsnd_mod_id(src)];
667
668 cmd = dvc;
669 }
670
671 dev_dbg(dev, "ctu/mix path = 0x%08x", data);
672
673 rsnd_mod_write(cmd, CMD_ROUTE_SLCT, data);
674
675 rsnd_mod_write(cmd, CMD_CTRL, 0x10);
676 }
677
678 static int rsnd_path_init(struct rsnd_priv *priv,
679 struct rsnd_dai *rdai,
680 struct rsnd_dai_stream *io)
681 {
682 int ret;
683
684 /*
685 * Gen1 is created by SRU/SSI, and this SRU is base module of
686 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
687 *
688 * Easy image is..
689 * Gen1 SRU = Gen2 SCU + SSIU + etc
690 *
691 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
692 * using fixed path.
693 */
694
695 /* SSI */
696 ret = rsnd_path_add(priv, io, ssi);
697 if (ret < 0)
698 return ret;
699
700 /* SRC */
701 ret = rsnd_path_add(priv, io, src);
702 if (ret < 0)
703 return ret;
704
705 /* CTU */
706 ret = rsnd_path_add(priv, io, ctu);
707 if (ret < 0)
708 return ret;
709
710 /* MIX */
711 ret = rsnd_path_add(priv, io, mix);
712 if (ret < 0)
713 return ret;
714
715 /* DVC */
716 ret = rsnd_path_add(priv, io, dvc);
717 if (ret < 0)
718 return ret;
719
720 return ret;
721 }
722
723 static void rsnd_of_parse_dai(struct platform_device *pdev,
724 const struct rsnd_of_data *of_data,
725 struct rsnd_priv *priv)
726 {
727 struct device_node *dai_node, *dai_np;
728 struct device_node *ssi_node, *ssi_np;
729 struct device_node *src_node, *src_np;
730 struct device_node *ctu_node, *ctu_np;
731 struct device_node *mix_node, *mix_np;
732 struct device_node *dvc_node, *dvc_np;
733 struct device_node *playback, *capture;
734 struct rsnd_dai_platform_info *dai_info;
735 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
736 struct device *dev = &pdev->dev;
737 int nr, i;
738 int dai_i, ssi_i, src_i, ctu_i, mix_i, dvc_i;
739
740 if (!of_data)
741 return;
742
743 dai_node = of_get_child_by_name(dev->of_node, "rcar_sound,dai");
744 if (!dai_node)
745 return;
746
747 nr = of_get_child_count(dai_node);
748 if (!nr)
749 return;
750
751 dai_info = devm_kzalloc(dev,
752 sizeof(struct rsnd_dai_platform_info) * nr,
753 GFP_KERNEL);
754 if (!dai_info) {
755 dev_err(dev, "dai info allocation error\n");
756 return;
757 }
758
759 info->dai_info_nr = nr;
760 info->dai_info = dai_info;
761
762 ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");
763 src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");
764 ctu_node = of_get_child_by_name(dev->of_node, "rcar_sound,ctu");
765 mix_node = of_get_child_by_name(dev->of_node, "rcar_sound,mix");
766 dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
767
768 #define mod_parse(name) \
769 if (name##_node) { \
770 struct rsnd_##name##_platform_info *name##_info; \
771 \
772 name##_i = 0; \
773 for_each_child_of_node(name##_node, name##_np) { \
774 name##_info = info->name##_info + name##_i; \
775 \
776 if (name##_np == playback) \
777 dai_info->playback.name = name##_info; \
778 if (name##_np == capture) \
779 dai_info->capture.name = name##_info; \
780 \
781 name##_i++; \
782 } \
783 }
784
785 /*
786 * parse all dai
787 */
788 dai_i = 0;
789 for_each_child_of_node(dai_node, dai_np) {
790 dai_info = info->dai_info + dai_i;
791
792 for (i = 0;; i++) {
793
794 playback = of_parse_phandle(dai_np, "playback", i);
795 capture = of_parse_phandle(dai_np, "capture", i);
796
797 if (!playback && !capture)
798 break;
799
800 mod_parse(ssi);
801 mod_parse(src);
802 mod_parse(ctu);
803 mod_parse(mix);
804 mod_parse(dvc);
805
806 of_node_put(playback);
807 of_node_put(capture);
808 }
809
810 dai_i++;
811 }
812 }
813
814 static int rsnd_dai_probe(struct platform_device *pdev,
815 const struct rsnd_of_data *of_data,
816 struct rsnd_priv *priv)
817 {
818 struct snd_soc_dai_driver *drv;
819 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
820 struct rsnd_dai *rdai;
821 struct rsnd_ssi_platform_info *pmod, *cmod;
822 struct device *dev = rsnd_priv_to_dev(priv);
823 int dai_nr;
824 int i;
825
826 rsnd_of_parse_dai(pdev, of_data, priv);
827
828 dai_nr = info->dai_info_nr;
829 if (!dai_nr) {
830 dev_err(dev, "no dai\n");
831 return -EIO;
832 }
833
834 drv = devm_kzalloc(dev, sizeof(*drv) * dai_nr, GFP_KERNEL);
835 rdai = devm_kzalloc(dev, sizeof(*rdai) * dai_nr, GFP_KERNEL);
836 if (!drv || !rdai) {
837 dev_err(dev, "dai allocate failed\n");
838 return -ENOMEM;
839 }
840
841 priv->rdai_nr = dai_nr;
842 priv->daidrv = drv;
843 priv->rdai = rdai;
844
845 for (i = 0; i < dai_nr; i++) {
846
847 pmod = info->dai_info[i].playback.ssi;
848 cmod = info->dai_info[i].capture.ssi;
849
850 /*
851 * init rsnd_dai
852 */
853 snprintf(rdai[i].name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", i);
854 rdai[i].priv = priv;
855
856 /*
857 * init snd_soc_dai_driver
858 */
859 drv[i].name = rdai[i].name;
860 drv[i].ops = &rsnd_soc_dai_ops;
861 if (pmod) {
862 snprintf(rdai[i].playback.name, RSND_DAI_NAME_SIZE,
863 "DAI%d Playback", i);
864
865 drv[i].playback.rates = RSND_RATES;
866 drv[i].playback.formats = RSND_FMTS;
867 drv[i].playback.channels_min = 2;
868 drv[i].playback.channels_max = 2;
869 drv[i].playback.stream_name = rdai[i].playback.name;
870
871 rdai[i].playback.info = &info->dai_info[i].playback;
872 rdai[i].playback.rdai = rdai + i;
873 rsnd_path_init(priv, &rdai[i], &rdai[i].playback);
874 }
875 if (cmod) {
876 snprintf(rdai[i].capture.name, RSND_DAI_NAME_SIZE,
877 "DAI%d Capture", i);
878
879 drv[i].capture.rates = RSND_RATES;
880 drv[i].capture.formats = RSND_FMTS;
881 drv[i].capture.channels_min = 2;
882 drv[i].capture.channels_max = 2;
883 drv[i].capture.stream_name = rdai[i].capture.name;
884
885 rdai[i].capture.info = &info->dai_info[i].capture;
886 rdai[i].capture.rdai = rdai + i;
887 rsnd_path_init(priv, &rdai[i], &rdai[i].capture);
888 }
889
890 dev_dbg(dev, "%s (%s/%s)\n", rdai[i].name,
891 pmod ? "play" : " -- ",
892 cmod ? "capture" : " -- ");
893 }
894
895 return 0;
896 }
897
898 /*
899 * pcm ops
900 */
901 static struct snd_pcm_hardware rsnd_pcm_hardware = {
902 .info = SNDRV_PCM_INFO_INTERLEAVED |
903 SNDRV_PCM_INFO_MMAP |
904 SNDRV_PCM_INFO_MMAP_VALID,
905 .buffer_bytes_max = 64 * 1024,
906 .period_bytes_min = 32,
907 .period_bytes_max = 8192,
908 .periods_min = 1,
909 .periods_max = 32,
910 .fifo_size = 256,
911 };
912
913 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
914 {
915 struct snd_pcm_runtime *runtime = substream->runtime;
916 int ret = 0;
917
918 snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
919
920 ret = snd_pcm_hw_constraint_integer(runtime,
921 SNDRV_PCM_HW_PARAM_PERIODS);
922
923 return ret;
924 }
925
926 static int rsnd_hw_params(struct snd_pcm_substream *substream,
927 struct snd_pcm_hw_params *hw_params)
928 {
929 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
930 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
931 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
932 int ret;
933
934 ret = rsnd_dai_call(hw_params, io, substream, hw_params);
935 if (ret)
936 return ret;
937
938 return snd_pcm_lib_malloc_pages(substream,
939 params_buffer_bytes(hw_params));
940 }
941
942 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
943 {
944 struct snd_pcm_runtime *runtime = substream->runtime;
945 struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
946 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
947 struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
948
949 return bytes_to_frames(runtime, io->byte_pos);
950 }
951
952 static struct snd_pcm_ops rsnd_pcm_ops = {
953 .open = rsnd_pcm_open,
954 .ioctl = snd_pcm_lib_ioctl,
955 .hw_params = rsnd_hw_params,
956 .hw_free = snd_pcm_lib_free_pages,
957 .pointer = rsnd_pointer,
958 };
959
960 /*
961 * snd_kcontrol
962 */
963 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
964 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
965 struct snd_ctl_elem_info *uinfo)
966 {
967 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
968
969 if (cfg->texts) {
970 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
971 uinfo->count = cfg->size;
972 uinfo->value.enumerated.items = cfg->max;
973 if (uinfo->value.enumerated.item >= cfg->max)
974 uinfo->value.enumerated.item = cfg->max - 1;
975 strlcpy(uinfo->value.enumerated.name,
976 cfg->texts[uinfo->value.enumerated.item],
977 sizeof(uinfo->value.enumerated.name));
978 } else {
979 uinfo->count = cfg->size;
980 uinfo->value.integer.min = 0;
981 uinfo->value.integer.max = cfg->max;
982 uinfo->type = (cfg->max == 1) ?
983 SNDRV_CTL_ELEM_TYPE_BOOLEAN :
984 SNDRV_CTL_ELEM_TYPE_INTEGER;
985 }
986
987 return 0;
988 }
989
990 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
991 struct snd_ctl_elem_value *uc)
992 {
993 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
994 int i;
995
996 for (i = 0; i < cfg->size; i++)
997 if (cfg->texts)
998 uc->value.enumerated.item[i] = cfg->val[i];
999 else
1000 uc->value.integer.value[i] = cfg->val[i];
1001
1002 return 0;
1003 }
1004
1005 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1006 struct snd_ctl_elem_value *uc)
1007 {
1008 struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
1009 struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
1010 int i, change = 0;
1011
1012 for (i = 0; i < cfg->size; i++) {
1013 if (cfg->texts) {
1014 change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1015 cfg->val[i] = uc->value.enumerated.item[i];
1016 } else {
1017 change |= (uc->value.integer.value[i] != cfg->val[i]);
1018 cfg->val[i] = uc->value.integer.value[i];
1019 }
1020 }
1021
1022 if (change)
1023 cfg->update(cfg->io, mod);
1024
1025 return change;
1026 }
1027
1028 static int __rsnd_kctrl_new(struct rsnd_mod *mod,
1029 struct rsnd_dai_stream *io,
1030 struct snd_soc_pcm_runtime *rtd,
1031 const unsigned char *name,
1032 struct rsnd_kctrl_cfg *cfg,
1033 void (*update)(struct rsnd_dai_stream *io,
1034 struct rsnd_mod *mod))
1035 {
1036 struct snd_card *card = rtd->card->snd_card;
1037 struct snd_kcontrol *kctrl;
1038 struct snd_kcontrol_new knew = {
1039 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1040 .name = name,
1041 .info = rsnd_kctrl_info,
1042 .index = rtd->num,
1043 .get = rsnd_kctrl_get,
1044 .put = rsnd_kctrl_put,
1045 .private_value = (unsigned long)cfg,
1046 };
1047 int ret;
1048
1049 kctrl = snd_ctl_new1(&knew, mod);
1050 if (!kctrl)
1051 return -ENOMEM;
1052
1053 ret = snd_ctl_add(card, kctrl);
1054 if (ret < 0) {
1055 snd_ctl_free_one(kctrl);
1056 return ret;
1057 }
1058
1059 cfg->update = update;
1060 cfg->card = card;
1061 cfg->kctrl = kctrl;
1062 cfg->io = io;
1063
1064 return 0;
1065 }
1066
1067 void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
1068 {
1069 snd_ctl_remove(cfg->card, cfg->kctrl);
1070 }
1071
1072 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
1073 struct rsnd_dai_stream *io,
1074 struct snd_soc_pcm_runtime *rtd,
1075 const unsigned char *name,
1076 void (*update)(struct rsnd_dai_stream *io,
1077 struct rsnd_mod *mod),
1078 struct rsnd_kctrl_cfg_m *_cfg,
1079 u32 max)
1080 {
1081 _cfg->cfg.max = max;
1082 _cfg->cfg.size = RSND_DVC_CHANNELS;
1083 _cfg->cfg.val = _cfg->val;
1084 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1085 }
1086
1087 int rsnd_kctrl_new_s(struct rsnd_mod *mod,
1088 struct rsnd_dai_stream *io,
1089 struct snd_soc_pcm_runtime *rtd,
1090 const unsigned char *name,
1091 void (*update)(struct rsnd_dai_stream *io,
1092 struct rsnd_mod *mod),
1093 struct rsnd_kctrl_cfg_s *_cfg,
1094 u32 max)
1095 {
1096 _cfg->cfg.max = max;
1097 _cfg->cfg.size = 1;
1098 _cfg->cfg.val = &_cfg->val;
1099 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1100 }
1101
1102 int rsnd_kctrl_new_e(struct rsnd_mod *mod,
1103 struct rsnd_dai_stream *io,
1104 struct snd_soc_pcm_runtime *rtd,
1105 const unsigned char *name,
1106 struct rsnd_kctrl_cfg_s *_cfg,
1107 void (*update)(struct rsnd_dai_stream *io,
1108 struct rsnd_mod *mod),
1109 const char * const *texts,
1110 u32 max)
1111 {
1112 _cfg->cfg.max = max;
1113 _cfg->cfg.size = 1;
1114 _cfg->cfg.val = &_cfg->val;
1115 _cfg->cfg.texts = texts;
1116 return __rsnd_kctrl_new(mod, io, rtd, name, &_cfg->cfg, update);
1117 }
1118
1119 /*
1120 * snd_soc_platform
1121 */
1122
1123 #define PREALLOC_BUFFER (32 * 1024)
1124 #define PREALLOC_BUFFER_MAX (32 * 1024)
1125
1126 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1127 {
1128 struct snd_soc_dai *dai = rtd->cpu_dai;
1129 struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1130 int ret;
1131
1132 ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1133 if (ret)
1134 return ret;
1135
1136 ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1137 if (ret)
1138 return ret;
1139
1140 return snd_pcm_lib_preallocate_pages_for_all(
1141 rtd->pcm,
1142 SNDRV_DMA_TYPE_DEV,
1143 rtd->card->snd_card->dev,
1144 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1145 }
1146
1147 static struct snd_soc_platform_driver rsnd_soc_platform = {
1148 .ops = &rsnd_pcm_ops,
1149 .pcm_new = rsnd_pcm_new,
1150 };
1151
1152 static const struct snd_soc_component_driver rsnd_soc_component = {
1153 .name = "rsnd",
1154 };
1155
1156 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1157 struct rsnd_dai_stream *io)
1158 {
1159 int ret;
1160
1161 ret = rsnd_dai_call(probe, io, priv);
1162 if (ret == -EAGAIN) {
1163 /*
1164 * Fallback to PIO mode
1165 */
1166
1167 /*
1168 * call "remove" for SSI/SRC/DVC
1169 * SSI will be switch to PIO mode if it was DMA mode
1170 * see
1171 * rsnd_dma_init()
1172 * rsnd_ssi_fallback()
1173 */
1174 rsnd_dai_call(remove, io, priv);
1175
1176 /*
1177 * remove SRC/DVC from DAI,
1178 */
1179 rsnd_path_remove(priv, io, src);
1180 rsnd_path_remove(priv, io, dvc);
1181
1182 /*
1183 * fallback
1184 */
1185 rsnd_dai_call(fallback, io, priv);
1186
1187 /*
1188 * retry to "probe".
1189 * DAI has SSI which is PIO mode only now.
1190 */
1191 ret = rsnd_dai_call(probe, io, priv);
1192 }
1193
1194 return ret;
1195 }
1196
1197 /*
1198 * rsnd probe
1199 */
1200 static int rsnd_probe(struct platform_device *pdev)
1201 {
1202 struct rcar_snd_info *info;
1203 struct rsnd_priv *priv;
1204 struct device *dev = &pdev->dev;
1205 struct rsnd_dai *rdai;
1206 const struct of_device_id *of_id = of_match_device(rsnd_of_match, dev);
1207 const struct rsnd_of_data *of_data;
1208 int (*probe_func[])(struct platform_device *pdev,
1209 const struct rsnd_of_data *of_data,
1210 struct rsnd_priv *priv) = {
1211 rsnd_gen_probe,
1212 rsnd_dma_probe,
1213 rsnd_ssi_probe,
1214 rsnd_src_probe,
1215 rsnd_ctu_probe,
1216 rsnd_mix_probe,
1217 rsnd_dvc_probe,
1218 rsnd_adg_probe,
1219 rsnd_dai_probe,
1220 };
1221 int ret, i;
1222
1223 info = devm_kzalloc(&pdev->dev, sizeof(struct rcar_snd_info),
1224 GFP_KERNEL);
1225 if (!info)
1226 return -ENOMEM;
1227 of_data = of_id->data;
1228
1229 /*
1230 * init priv data
1231 */
1232 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1233 if (!priv) {
1234 dev_err(dev, "priv allocate failed\n");
1235 return -ENODEV;
1236 }
1237
1238 priv->pdev = pdev;
1239 priv->info = info;
1240 spin_lock_init(&priv->lock);
1241
1242 /*
1243 * init each module
1244 */
1245 for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1246 ret = probe_func[i](pdev, of_data, priv);
1247 if (ret)
1248 return ret;
1249 }
1250
1251 for_each_rsnd_dai(rdai, priv, i) {
1252 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1253 if (ret)
1254 goto exit_snd_probe;
1255
1256 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1257 if (ret)
1258 goto exit_snd_probe;
1259 }
1260
1261 dev_set_drvdata(dev, priv);
1262
1263 /*
1264 * asoc register
1265 */
1266 ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1267 if (ret < 0) {
1268 dev_err(dev, "cannot snd soc register\n");
1269 return ret;
1270 }
1271
1272 ret = snd_soc_register_component(dev, &rsnd_soc_component,
1273 priv->daidrv, rsnd_rdai_nr(priv));
1274 if (ret < 0) {
1275 dev_err(dev, "cannot snd dai register\n");
1276 goto exit_snd_soc;
1277 }
1278
1279 pm_runtime_enable(dev);
1280
1281 dev_info(dev, "probed\n");
1282 return ret;
1283
1284 exit_snd_soc:
1285 snd_soc_unregister_platform(dev);
1286 exit_snd_probe:
1287 for_each_rsnd_dai(rdai, priv, i) {
1288 rsnd_dai_call(remove, &rdai->playback, priv);
1289 rsnd_dai_call(remove, &rdai->capture, priv);
1290 }
1291
1292 return ret;
1293 }
1294
1295 static int rsnd_remove(struct platform_device *pdev)
1296 {
1297 struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1298 struct rsnd_dai *rdai;
1299 void (*remove_func[])(struct platform_device *pdev,
1300 struct rsnd_priv *priv) = {
1301 rsnd_ssi_remove,
1302 rsnd_src_remove,
1303 rsnd_ctu_remove,
1304 rsnd_mix_remove,
1305 rsnd_dvc_remove,
1306 };
1307 int ret = 0, i;
1308
1309 pm_runtime_disable(&pdev->dev);
1310
1311 for_each_rsnd_dai(rdai, priv, i) {
1312 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1313 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1314 }
1315
1316 for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1317 remove_func[i](pdev, priv);
1318
1319 snd_soc_unregister_component(&pdev->dev);
1320 snd_soc_unregister_platform(&pdev->dev);
1321
1322 return ret;
1323 }
1324
1325 static struct platform_driver rsnd_driver = {
1326 .driver = {
1327 .name = "rcar_sound",
1328 .of_match_table = rsnd_of_match,
1329 },
1330 .probe = rsnd_probe,
1331 .remove = rsnd_remove,
1332 };
1333 module_platform_driver(rsnd_driver);
1334
1335 MODULE_LICENSE("GPL");
1336 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1337 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1338 MODULE_ALIAS("platform:rcar-pcm-audio");
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