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