ASoC: rsnd: avoid duplicate free_irq()
[muen/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_192000
100 #define RSND_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
101
102 static const struct of_device_id rsnd_of_match[] = {
103         { .compatible = "renesas,rcar_sound-gen1", .data = (void *)RSND_GEN1 },
104         { .compatible = "renesas,rcar_sound-gen2", .data = (void *)RSND_GEN2 },
105         { .compatible = "renesas,rcar_sound-gen3", .data = (void *)RSND_GEN2 }, /* gen2 compatible */
106         {},
107 };
108 MODULE_DEVICE_TABLE(of, rsnd_of_match);
109
110 /*
111  *      rsnd_mod functions
112  */
113 void rsnd_mod_make_sure(struct rsnd_mod *mod, enum rsnd_mod_type type)
114 {
115         if (mod->type != type) {
116                 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
117                 struct device *dev = rsnd_priv_to_dev(priv);
118
119                 dev_warn(dev, "%s[%d] is not your expected module\n",
120                          rsnd_mod_name(mod), rsnd_mod_id(mod));
121         }
122 }
123
124 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 int rsnd_runtime_channel_original(struct rsnd_dai_stream *io)
207 {
208         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
209
210         return runtime->channels;
211 }
212
213 int rsnd_runtime_channel_after_ctu(struct rsnd_dai_stream *io)
214 {
215         int chan = rsnd_runtime_channel_original(io);
216         struct rsnd_mod *ctu_mod = rsnd_io_to_mod_ctu(io);
217
218         if (ctu_mod) {
219                 u32 converted_chan = rsnd_ctu_converted_channel(ctu_mod);
220
221                 if (converted_chan)
222                         return converted_chan;
223         }
224
225         return chan;
226 }
227
228 int rsnd_runtime_channel_for_ssi(struct rsnd_dai_stream *io)
229 {
230         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
231         int chan = rsnd_io_is_play(io) ?
232                 rsnd_runtime_channel_after_ctu(io) :
233                 rsnd_runtime_channel_original(io);
234
235         /* Use Multi SSI */
236         if (rsnd_runtime_is_ssi_multi(io))
237                 chan /= rsnd_rdai_ssi_lane_get(rdai);
238
239         /* TDM Extend Mode needs 8ch */
240         if (chan == 6)
241                 chan = 8;
242
243         return chan;
244 }
245
246 int rsnd_runtime_is_ssi_multi(struct rsnd_dai_stream *io)
247 {
248         struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
249         int lane = rsnd_rdai_ssi_lane_get(rdai);
250         int chan = rsnd_io_is_play(io) ?
251                 rsnd_runtime_channel_after_ctu(io) :
252                 rsnd_runtime_channel_original(io);
253
254         return (chan > 2) && (lane > 1);
255 }
256
257 int rsnd_runtime_is_ssi_tdm(struct rsnd_dai_stream *io)
258 {
259         return rsnd_runtime_channel_for_ssi(io) >= 6;
260 }
261
262 /*
263  *      ADINR function
264  */
265 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
266 {
267         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
268         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
269         struct device *dev = rsnd_priv_to_dev(priv);
270
271         switch (runtime->sample_bits) {
272         case 16:
273                 return 8 << 16;
274         case 32:
275                 return 0 << 16;
276         }
277
278         dev_warn(dev, "not supported sample bits\n");
279
280         return 0;
281 }
282
283 /*
284  *      DALIGN function
285  */
286 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
287 {
288         struct rsnd_mod *ssiu = rsnd_io_to_mod_ssiu(io);
289         struct rsnd_mod *target;
290         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
291         u32 val = 0x76543210;
292         u32 mask = ~0;
293
294         /*
295          * *Hardware* L/R and *Software* L/R are inverted.
296          * We need to care about inversion timing to control
297          * Playback/Capture correctly.
298          * The point is [DVC] needs *Hardware* L/R, [MEM] needs *Software* L/R
299          *
300          * sL/R : software L/R
301          * hL/R : hardware L/R
302          * (*)  : conversion timing
303          *
304          * Playback
305          *           sL/R (*) hL/R     hL/R     hL/R      hL/R     hL/R
306          *      [MEM] -> [SRC] -> [DVC] -> [CMD] -> [SSIU] -> [SSI] -> codec
307          *
308          * Capture
309          *           hL/R     hL/R      hL/R     hL/R     hL/R (*) sL/R
310          *      codec -> [SSI] -> [SSIU] -> [SRC] -> [DVC] -> [CMD] -> [MEM]
311          */
312         if (rsnd_io_is_play(io)) {
313                 struct rsnd_mod *src = rsnd_io_to_mod_src(io);
314
315                 target = src ? src : ssiu;
316         } else {
317                 struct rsnd_mod *cmd = rsnd_io_to_mod_cmd(io);
318
319                 target = cmd ? cmd : ssiu;
320         }
321
322         mask <<= runtime->channels * 4;
323         val = val & mask;
324
325         switch (runtime->sample_bits) {
326         case 16:
327                 val |= 0x67452301 & ~mask;
328                 break;
329         case 32:
330                 val |= 0x76543210 & ~mask;
331                 break;
332         }
333
334         /*
335          * exchange channeles on SRC if possible,
336          * otherwise, R/L volume settings on DVC
337          * changes inverted channels
338          */
339         if (mod == target)
340                 return val;
341         else
342                 return 0x76543210;
343 }
344
345 u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
346 {
347         enum rsnd_mod_type playback_mods[] = {
348                 RSND_MOD_SRC,
349                 RSND_MOD_CMD,
350                 RSND_MOD_SSIU,
351         };
352         enum rsnd_mod_type capture_mods[] = {
353                 RSND_MOD_CMD,
354                 RSND_MOD_SRC,
355                 RSND_MOD_SSIU,
356         };
357         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
358         struct rsnd_mod *tmod = NULL;
359         enum rsnd_mod_type *mods =
360                 rsnd_io_is_play(io) ?
361                 playback_mods : capture_mods;
362         int i;
363
364         /*
365          * This is needed for 24bit data
366          * We need to shift 8bit
367          *
368          * Linux 24bit data is located as 0x00******
369          * HW    24bit data is located as 0x******00
370          *
371          */
372         switch (runtime->sample_bits) {
373         case 16:
374                 return 0;
375         case 32:
376                 break;
377         }
378
379         for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
380                 tmod = rsnd_io_to_mod(io, mods[i]);
381                 if (tmod)
382                         break;
383         }
384
385         if (tmod != mod)
386                 return 0;
387
388         if (rsnd_io_is_play(io))
389                 return  (0 << 20) | /* shift to Left */
390                         (8 << 16);  /* 8bit */
391         else
392                 return  (1 << 20) | /* shift to Right */
393                         (8 << 16);  /* 8bit */
394 }
395
396 /*
397  *      rsnd_dai functions
398  */
399 struct rsnd_mod *rsnd_mod_next(int *iterator,
400                                struct rsnd_dai_stream *io,
401                                enum rsnd_mod_type *array,
402                                int array_size)
403 {
404         struct rsnd_mod *mod;
405         enum rsnd_mod_type type;
406         int max = array ? array_size : RSND_MOD_MAX;
407
408         for (; *iterator < max; (*iterator)++) {
409                 type = (array) ? array[*iterator] : *iterator;
410                 mod = io->mod[type];
411                 if (!mod)
412                         continue;
413
414                 return mod;
415         }
416
417         return NULL;
418 }
419
420 static enum rsnd_mod_type rsnd_mod_sequence[][RSND_MOD_MAX] = {
421         {
422                 /* CAPTURE */
423                 RSND_MOD_AUDMAPP,
424                 RSND_MOD_AUDMA,
425                 RSND_MOD_DVC,
426                 RSND_MOD_MIX,
427                 RSND_MOD_CTU,
428                 RSND_MOD_CMD,
429                 RSND_MOD_SRC,
430                 RSND_MOD_SSIU,
431                 RSND_MOD_SSIM3,
432                 RSND_MOD_SSIM2,
433                 RSND_MOD_SSIM1,
434                 RSND_MOD_SSIP,
435                 RSND_MOD_SSI,
436         }, {
437                 /* PLAYBACK */
438                 RSND_MOD_AUDMAPP,
439                 RSND_MOD_AUDMA,
440                 RSND_MOD_SSIM3,
441                 RSND_MOD_SSIM2,
442                 RSND_MOD_SSIM1,
443                 RSND_MOD_SSIP,
444                 RSND_MOD_SSI,
445                 RSND_MOD_SSIU,
446                 RSND_MOD_DVC,
447                 RSND_MOD_MIX,
448                 RSND_MOD_CTU,
449                 RSND_MOD_CMD,
450                 RSND_MOD_SRC,
451         },
452 };
453
454 static int rsnd_status_update(u32 *status,
455                               int shift, int add, int timing)
456 {
457         u32 mask        = 0xF << shift;
458         u8 val          = (*status >> shift) & 0xF;
459         u8 next_val     = (val + add) & 0xF;
460         int func_call   = (val == timing);
461
462         if (next_val == 0xF) /* underflow case */
463                 func_call = 0;
464         else
465                 *status = (*status & ~mask) + (next_val << shift);
466
467         return func_call;
468 }
469
470 #define rsnd_dai_call(fn, io, param...)                                 \
471 ({                                                                      \
472         struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io));     \
473         struct rsnd_mod *mod;                                           \
474         int is_play = rsnd_io_is_play(io);                              \
475         int ret = 0, i;                                                 \
476         enum rsnd_mod_type *types = rsnd_mod_sequence[is_play];         \
477         for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) {     \
478                 int tmp = 0;                                            \
479                 u32 *status = mod->get_status(io, mod, types[i]);       \
480                 int func_call = rsnd_status_update(status,              \
481                                                 __rsnd_mod_shift_##fn,  \
482                                                 __rsnd_mod_add_##fn,    \
483                                                 __rsnd_mod_call_##fn);  \
484                 dev_dbg(dev, "%s[%d]\t0x%08x %s\n",                     \
485                         rsnd_mod_name(mod), rsnd_mod_id(mod), *status,  \
486                         (func_call && (mod)->ops->fn) ? #fn : "");      \
487                 if (func_call && (mod)->ops->fn)                        \
488                         tmp = (mod)->ops->fn(mod, io, param);           \
489                 if (tmp)                                                \
490                         dev_err(dev, "%s[%d] : %s error %d\n",          \
491                                 rsnd_mod_name(mod), rsnd_mod_id(mod),   \
492                                                      #fn, tmp);         \
493                 ret |= tmp;                                             \
494         }                                                               \
495         ret;                                                            \
496 })
497
498 int rsnd_dai_connect(struct rsnd_mod *mod,
499                      struct rsnd_dai_stream *io,
500                      enum rsnd_mod_type type)
501 {
502         struct rsnd_priv *priv;
503         struct device *dev;
504
505         if (!mod)
506                 return -EIO;
507
508         if (io->mod[type] == mod)
509                 return 0;
510
511         if (io->mod[type])
512                 return -EINVAL;
513
514         priv = rsnd_mod_to_priv(mod);
515         dev = rsnd_priv_to_dev(priv);
516
517         io->mod[type] = mod;
518
519         dev_dbg(dev, "%s[%d] is connected to io (%s)\n",
520                 rsnd_mod_name(mod), rsnd_mod_id(mod),
521                 rsnd_io_is_play(io) ? "Playback" : "Capture");
522
523         return 0;
524 }
525
526 static void rsnd_dai_disconnect(struct rsnd_mod *mod,
527                                 struct rsnd_dai_stream *io,
528                                 enum rsnd_mod_type type)
529 {
530         io->mod[type] = NULL;
531 }
532
533 int rsnd_rdai_channels_ctrl(struct rsnd_dai *rdai,
534                             int max_channels)
535 {
536         if (max_channels > 0)
537                 rdai->max_channels = max_channels;
538
539         return rdai->max_channels;
540 }
541
542 int rsnd_rdai_ssi_lane_ctrl(struct rsnd_dai *rdai,
543                             int ssi_lane)
544 {
545         if (ssi_lane > 0)
546                 rdai->ssi_lane = ssi_lane;
547
548         return rdai->ssi_lane;
549 }
550
551 struct rsnd_dai *rsnd_rdai_get(struct rsnd_priv *priv, int id)
552 {
553         if ((id < 0) || (id >= rsnd_rdai_nr(priv)))
554                 return NULL;
555
556         return priv->rdai + id;
557 }
558
559 #define rsnd_dai_to_priv(dai) snd_soc_dai_get_drvdata(dai)
560 static struct rsnd_dai *rsnd_dai_to_rdai(struct snd_soc_dai *dai)
561 {
562         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
563
564         return rsnd_rdai_get(priv, dai->id);
565 }
566
567 /*
568  *      rsnd_soc_dai functions
569  */
570 void rsnd_dai_period_elapsed(struct rsnd_dai_stream *io)
571 {
572         struct snd_pcm_substream *substream = io->substream;
573
574         /*
575          * this function should be called...
576          *
577          * - if rsnd_dai_pointer_update() returns true
578          * - without spin lock
579          */
580
581         snd_pcm_period_elapsed(substream);
582 }
583
584 static void rsnd_dai_stream_init(struct rsnd_dai_stream *io,
585                                 struct snd_pcm_substream *substream)
586 {
587         io->substream           = substream;
588 }
589
590 static void rsnd_dai_stream_quit(struct rsnd_dai_stream *io)
591 {
592         io->substream           = NULL;
593 }
594
595 static
596 struct snd_soc_dai *rsnd_substream_to_dai(struct snd_pcm_substream *substream)
597 {
598         struct snd_soc_pcm_runtime *rtd = substream->private_data;
599
600         return  rtd->cpu_dai;
601 }
602
603 static
604 struct rsnd_dai_stream *rsnd_rdai_to_io(struct rsnd_dai *rdai,
605                                         struct snd_pcm_substream *substream)
606 {
607         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
608                 return &rdai->playback;
609         else
610                 return &rdai->capture;
611 }
612
613 static int rsnd_soc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
614                             struct snd_soc_dai *dai)
615 {
616         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
617         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
618         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
619         int ret;
620         unsigned long flags;
621
622         spin_lock_irqsave(&priv->lock, flags);
623
624         switch (cmd) {
625         case SNDRV_PCM_TRIGGER_START:
626         case SNDRV_PCM_TRIGGER_RESUME:
627                 rsnd_dai_stream_init(io, substream);
628
629                 ret = rsnd_dai_call(init, io, priv);
630                 if (ret < 0)
631                         goto dai_trigger_end;
632
633                 ret = rsnd_dai_call(start, io, priv);
634                 if (ret < 0)
635                         goto dai_trigger_end;
636
637                 ret = rsnd_dai_call(irq, io, priv, 1);
638                 if (ret < 0)
639                         goto dai_trigger_end;
640
641                 break;
642         case SNDRV_PCM_TRIGGER_STOP:
643         case SNDRV_PCM_TRIGGER_SUSPEND:
644                 ret = rsnd_dai_call(irq, io, priv, 0);
645
646                 ret |= rsnd_dai_call(stop, io, priv);
647
648                 ret |= rsnd_dai_call(quit, io, priv);
649
650                 rsnd_dai_stream_quit(io);
651                 break;
652         default:
653                 ret = -EINVAL;
654         }
655
656 dai_trigger_end:
657         spin_unlock_irqrestore(&priv->lock, flags);
658
659         return ret;
660 }
661
662 static int rsnd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
663 {
664         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
665
666         /* set master/slave audio interface */
667         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
668         case SND_SOC_DAIFMT_CBM_CFM:
669                 rdai->clk_master = 0;
670                 break;
671         case SND_SOC_DAIFMT_CBS_CFS:
672                 rdai->clk_master = 1; /* codec is slave, cpu is master */
673                 break;
674         default:
675                 return -EINVAL;
676         }
677
678         /* set format */
679         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
680         case SND_SOC_DAIFMT_I2S:
681                 rdai->sys_delay = 0;
682                 rdai->data_alignment = 0;
683                 rdai->frm_clk_inv = 0;
684                 break;
685         case SND_SOC_DAIFMT_LEFT_J:
686                 rdai->sys_delay = 1;
687                 rdai->data_alignment = 0;
688                 rdai->frm_clk_inv = 1;
689                 break;
690         case SND_SOC_DAIFMT_RIGHT_J:
691                 rdai->sys_delay = 1;
692                 rdai->data_alignment = 1;
693                 rdai->frm_clk_inv = 1;
694                 break;
695         }
696
697         /* set clock inversion */
698         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
699         case SND_SOC_DAIFMT_NB_IF:
700                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
701                 break;
702         case SND_SOC_DAIFMT_IB_NF:
703                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
704                 break;
705         case SND_SOC_DAIFMT_IB_IF:
706                 rdai->bit_clk_inv = !rdai->bit_clk_inv;
707                 rdai->frm_clk_inv = !rdai->frm_clk_inv;
708                 break;
709         case SND_SOC_DAIFMT_NB_NF:
710         default:
711                 break;
712         }
713
714         return 0;
715 }
716
717 static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai,
718                                      u32 tx_mask, u32 rx_mask,
719                                      int slots, int slot_width)
720 {
721         struct rsnd_priv *priv = rsnd_dai_to_priv(dai);
722         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
723         struct device *dev = rsnd_priv_to_dev(priv);
724
725         switch (slots) {
726         case 2:
727         case 6:
728         case 8:
729                 /* TDM Extend Mode */
730                 rsnd_rdai_channels_set(rdai, slots);
731                 rsnd_rdai_ssi_lane_set(rdai, 1);
732                 break;
733         default:
734                 dev_err(dev, "unsupported TDM slots (%d)\n", slots);
735                 return -EINVAL;
736         }
737
738         return 0;
739 }
740
741 static unsigned int rsnd_soc_hw_channels_list[] = {
742         2, 6, 8,
743 };
744
745 static unsigned int rsnd_soc_hw_rate_list[] = {
746           8000,
747          11025,
748          16000,
749          22050,
750          32000,
751          44100,
752          48000,
753          64000,
754          88200,
755          96000,
756         176400,
757         192000,
758 };
759
760 static int rsnd_soc_hw_rule(struct rsnd_priv *priv,
761                             unsigned int *list, int list_num,
762                             struct snd_interval *baseline, struct snd_interval *iv)
763 {
764         struct snd_interval p;
765         unsigned int rate;
766         int i;
767
768         snd_interval_any(&p);
769         p.min = UINT_MAX;
770         p.max = 0;
771
772         for (i = 0; i < list_num; i++) {
773
774                 if (!snd_interval_test(iv, list[i]))
775                         continue;
776
777                 rate = rsnd_ssi_clk_query(priv,
778                                           baseline->min, list[i], NULL);
779                 if (rate > 0) {
780                         p.min = min(p.min, list[i]);
781                         p.max = max(p.max, list[i]);
782                 }
783
784                 rate = rsnd_ssi_clk_query(priv,
785                                           baseline->max, list[i], NULL);
786                 if (rate > 0) {
787                         p.min = min(p.min, list[i]);
788                         p.max = max(p.max, list[i]);
789                 }
790         }
791
792         return snd_interval_refine(iv, &p);
793 }
794
795 static int rsnd_soc_hw_rule_rate(struct snd_pcm_hw_params *params,
796                                  struct snd_pcm_hw_rule *rule)
797 {
798         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
799         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
800         struct snd_interval ic;
801         struct snd_soc_dai *dai = rule->private;
802         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
803         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
804
805         /*
806          * possible sampling rate limitation is same as
807          * 2ch if it supports multi ssi
808          */
809         ic = *ic_;
810         if (1 < rsnd_rdai_ssi_lane_get(rdai)) {
811                 ic.min = 2;
812                 ic.max = 2;
813         }
814
815         return rsnd_soc_hw_rule(priv, rsnd_soc_hw_rate_list,
816                                 ARRAY_SIZE(rsnd_soc_hw_rate_list),
817                                 &ic, ir);
818 }
819
820
821 static int rsnd_soc_hw_rule_channels(struct snd_pcm_hw_params *params,
822                                      struct snd_pcm_hw_rule *rule)
823 {
824         struct snd_interval *ic_ = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
825         struct snd_interval *ir = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
826         struct snd_interval ic;
827         struct snd_soc_dai *dai = rule->private;
828         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
829         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
830
831         /*
832          * possible sampling rate limitation is same as
833          * 2ch if it supports multi ssi
834          */
835         ic = *ic_;
836         if (1 < rsnd_rdai_ssi_lane_get(rdai)) {
837                 ic.min = 2;
838                 ic.max = 2;
839         }
840
841         return rsnd_soc_hw_rule(priv, rsnd_soc_hw_channels_list,
842                                 ARRAY_SIZE(rsnd_soc_hw_channels_list),
843                                 ir, &ic);
844 }
845
846 static void rsnd_soc_hw_constraint(struct snd_pcm_runtime *runtime,
847                                    struct snd_soc_dai *dai)
848 {
849         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
850         struct snd_pcm_hw_constraint_list *constraint = &rdai->constraint;
851         unsigned int max_channels = rsnd_rdai_channels_get(rdai);
852         int i;
853
854         /*
855          * Channel Limitation
856          * It depends on Platform design
857          */
858         constraint->list        = rsnd_soc_hw_channels_list;
859         constraint->count       = 0;
860         constraint->mask        = 0;
861
862         for (i = 0; i < ARRAY_SIZE(rsnd_soc_hw_channels_list); i++) {
863                 if (rsnd_soc_hw_channels_list[i] > max_channels)
864                         break;
865                 constraint->count = i + 1;
866         }
867
868         snd_pcm_hw_constraint_list(runtime, 0,
869                                    SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
870
871         /*
872          * Sampling Rate / Channel Limitation
873          * It depends on Clock Master Mode
874          */
875         if (!rsnd_rdai_is_clk_master(rdai))
876                 return;
877
878         snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
879                             rsnd_soc_hw_rule_rate, dai,
880                             SNDRV_PCM_HW_PARAM_CHANNELS, -1);
881         snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
882                             rsnd_soc_hw_rule_channels, dai,
883                             SNDRV_PCM_HW_PARAM_RATE, -1);
884 }
885
886 static int rsnd_soc_dai_startup(struct snd_pcm_substream *substream,
887                                 struct snd_soc_dai *dai)
888 {
889         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
890         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
891         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
892         int ret;
893
894         /* rsnd_io_to_runtime() is not yet enabled here */
895         rsnd_soc_hw_constraint(substream->runtime, dai);
896
897         /*
898          * call rsnd_dai_call without spinlock
899          */
900         ret = rsnd_dai_call(nolock_start, io, priv);
901         if (ret < 0)
902                 rsnd_dai_call(nolock_stop, io, priv);
903
904         return ret;
905 }
906
907 static void rsnd_soc_dai_shutdown(struct snd_pcm_substream *substream,
908                                   struct snd_soc_dai *dai)
909 {
910         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
911         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
912         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
913
914         /*
915          * call rsnd_dai_call without spinlock
916          */
917         rsnd_dai_call(nolock_stop, io, priv);
918 }
919
920 static const struct snd_soc_dai_ops rsnd_soc_dai_ops = {
921         .startup        = rsnd_soc_dai_startup,
922         .shutdown       = rsnd_soc_dai_shutdown,
923         .trigger        = rsnd_soc_dai_trigger,
924         .set_fmt        = rsnd_soc_dai_set_fmt,
925         .set_tdm_slot   = rsnd_soc_set_dai_tdm_slot,
926 };
927
928 void rsnd_parse_connect_common(struct rsnd_dai *rdai,
929                 struct rsnd_mod* (*mod_get)(struct rsnd_priv *priv, int id),
930                 struct device_node *node,
931                 struct device_node *playback,
932                 struct device_node *capture)
933 {
934         struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
935         struct device_node *np;
936         struct rsnd_mod *mod;
937         int i;
938
939         if (!node)
940                 return;
941
942         i = 0;
943         for_each_child_of_node(node, np) {
944                 mod = mod_get(priv, i);
945                 if (np == playback)
946                         rsnd_dai_connect(mod, &rdai->playback, mod->type);
947                 if (np == capture)
948                         rsnd_dai_connect(mod, &rdai->capture, mod->type);
949                 i++;
950         }
951
952         of_node_put(node);
953 }
954
955 static struct device_node *rsnd_dai_of_node(struct rsnd_priv *priv,
956                                             int *is_graph)
957 {
958         struct device *dev = rsnd_priv_to_dev(priv);
959         struct device_node *np = dev->of_node;
960         struct device_node *dai_node;
961         struct device_node *ret;
962
963         *is_graph = 0;
964
965         /*
966          * parse both previous dai (= rcar_sound,dai), and
967          * graph dai (= ports/port)
968          */
969         dai_node = of_get_child_by_name(np, RSND_NODE_DAI);
970         if (dai_node) {
971                 ret = dai_node;
972                 goto of_node_compatible;
973         }
974
975         ret = np;
976
977         dai_node = of_graph_get_next_endpoint(np, NULL);
978         if (dai_node)
979                 goto of_node_graph;
980
981         return NULL;
982
983 of_node_graph:
984         *is_graph = 1;
985 of_node_compatible:
986         of_node_put(dai_node);
987
988         return ret;
989 }
990
991 static void __rsnd_dai_probe(struct rsnd_priv *priv,
992                              struct device_node *dai_np,
993                              int dai_i, int is_graph)
994 {
995         struct device_node *playback, *capture;
996         struct rsnd_dai_stream *io_playback;
997         struct rsnd_dai_stream *io_capture;
998         struct snd_soc_dai_driver *drv;
999         struct rsnd_dai *rdai;
1000         struct device *dev = rsnd_priv_to_dev(priv);
1001         int io_i;
1002
1003         rdai            = rsnd_rdai_get(priv, dai_i);
1004         drv             = priv->daidrv + dai_i;
1005         io_playback     = &rdai->playback;
1006         io_capture      = &rdai->capture;
1007
1008         snprintf(rdai->name, RSND_DAI_NAME_SIZE, "rsnd-dai.%d", dai_i);
1009
1010         rdai->priv      = priv;
1011         drv->name       = rdai->name;
1012         drv->ops        = &rsnd_soc_dai_ops;
1013
1014         snprintf(rdai->playback.name, RSND_DAI_NAME_SIZE,
1015                  "DAI%d Playback", dai_i);
1016         drv->playback.rates             = RSND_RATES;
1017         drv->playback.formats           = RSND_FMTS;
1018         drv->playback.channels_min      = 2;
1019         drv->playback.channels_max      = 8;
1020         drv->playback.stream_name       = rdai->playback.name;
1021
1022         snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE,
1023                  "DAI%d Capture", dai_i);
1024         drv->capture.rates              = RSND_RATES;
1025         drv->capture.formats            = RSND_FMTS;
1026         drv->capture.channels_min       = 2;
1027         drv->capture.channels_max       = 8;
1028         drv->capture.stream_name        = rdai->capture.name;
1029
1030         rdai->playback.rdai             = rdai;
1031         rdai->capture.rdai              = rdai;
1032         rsnd_rdai_channels_set(rdai, 2); /* default 2ch */
1033         rsnd_rdai_ssi_lane_set(rdai, 1); /* default 1lane */
1034
1035         for (io_i = 0;; io_i++) {
1036                 playback = of_parse_phandle(dai_np, "playback", io_i);
1037                 capture  = of_parse_phandle(dai_np, "capture", io_i);
1038
1039                 if (!playback && !capture)
1040                         break;
1041
1042                 rsnd_parse_connect_ssi(rdai, playback, capture);
1043                 rsnd_parse_connect_src(rdai, playback, capture);
1044                 rsnd_parse_connect_ctu(rdai, playback, capture);
1045                 rsnd_parse_connect_mix(rdai, playback, capture);
1046                 rsnd_parse_connect_dvc(rdai, playback, capture);
1047
1048                 of_node_put(playback);
1049                 of_node_put(capture);
1050         }
1051
1052         dev_dbg(dev, "%s (%s/%s)\n", rdai->name,
1053                 rsnd_io_to_mod_ssi(io_playback) ? "play"    : " -- ",
1054                 rsnd_io_to_mod_ssi(io_capture) ? "capture" : "  --   ");
1055 }
1056
1057 static int rsnd_dai_probe(struct rsnd_priv *priv)
1058 {
1059         struct device_node *dai_node;
1060         struct device_node *dai_np;
1061         struct snd_soc_dai_driver *rdrv;
1062         struct device *dev = rsnd_priv_to_dev(priv);
1063         struct rsnd_dai *rdai;
1064         int nr;
1065         int is_graph;
1066         int dai_i;
1067
1068         dai_node = rsnd_dai_of_node(priv, &is_graph);
1069         if (is_graph)
1070                 nr = of_graph_get_endpoint_count(dai_node);
1071         else
1072                 nr = of_get_child_count(dai_node);
1073
1074         if (!nr)
1075                 return -EINVAL;
1076
1077         rdrv = devm_kzalloc(dev, sizeof(*rdrv) * nr, GFP_KERNEL);
1078         rdai = devm_kzalloc(dev, sizeof(*rdai) * nr, GFP_KERNEL);
1079         if (!rdrv || !rdai)
1080                 return -ENOMEM;
1081
1082         priv->rdai_nr   = nr;
1083         priv->daidrv    = rdrv;
1084         priv->rdai      = rdai;
1085
1086         /*
1087          * parse all dai
1088          */
1089         dai_i = 0;
1090         if (is_graph) {
1091                 for_each_endpoint_of_node(dai_node, dai_np) {
1092                         __rsnd_dai_probe(priv, dai_np, dai_i, is_graph);
1093                         rsnd_ssi_parse_hdmi_connection(priv, dai_np, dai_i);
1094                         dai_i++;
1095                 }
1096         } else {
1097                 for_each_child_of_node(dai_node, dai_np)
1098                         __rsnd_dai_probe(priv, dai_np, dai_i++, is_graph);
1099         }
1100
1101         return 0;
1102 }
1103
1104 /*
1105  *              pcm ops
1106  */
1107 static struct snd_pcm_hardware rsnd_pcm_hardware = {
1108         .info =         SNDRV_PCM_INFO_INTERLEAVED      |
1109                         SNDRV_PCM_INFO_MMAP             |
1110                         SNDRV_PCM_INFO_MMAP_VALID,
1111         .buffer_bytes_max       = 64 * 1024,
1112         .period_bytes_min       = 32,
1113         .period_bytes_max       = 8192,
1114         .periods_min            = 1,
1115         .periods_max            = 32,
1116         .fifo_size              = 256,
1117 };
1118
1119 static int rsnd_pcm_open(struct snd_pcm_substream *substream)
1120 {
1121         struct snd_pcm_runtime *runtime = substream->runtime;
1122         int ret = 0;
1123
1124         snd_soc_set_runtime_hwparams(substream, &rsnd_pcm_hardware);
1125
1126         ret = snd_pcm_hw_constraint_integer(runtime,
1127                                             SNDRV_PCM_HW_PARAM_PERIODS);
1128
1129         return ret;
1130 }
1131
1132 static int rsnd_hw_params(struct snd_pcm_substream *substream,
1133                          struct snd_pcm_hw_params *hw_params)
1134 {
1135         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1136         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1137         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1138         int ret;
1139
1140         ret = rsnd_dai_call(hw_params, io, substream, hw_params);
1141         if (ret)
1142                 return ret;
1143
1144         return snd_pcm_lib_malloc_pages(substream,
1145                                         params_buffer_bytes(hw_params));
1146 }
1147
1148 static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
1149 {
1150         struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
1151         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1152         struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
1153         snd_pcm_uframes_t pointer = 0;
1154
1155         rsnd_dai_call(pointer, io, &pointer);
1156
1157         return pointer;
1158 }
1159
1160 static struct snd_pcm_ops rsnd_pcm_ops = {
1161         .open           = rsnd_pcm_open,
1162         .ioctl          = snd_pcm_lib_ioctl,
1163         .hw_params      = rsnd_hw_params,
1164         .hw_free        = snd_pcm_lib_free_pages,
1165         .pointer        = rsnd_pointer,
1166 };
1167
1168 /*
1169  *              snd_kcontrol
1170  */
1171 #define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
1172 static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
1173                            struct snd_ctl_elem_info *uinfo)
1174 {
1175         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
1176
1177         if (cfg->texts) {
1178                 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1179                 uinfo->count = cfg->size;
1180                 uinfo->value.enumerated.items = cfg->max;
1181                 if (uinfo->value.enumerated.item >= cfg->max)
1182                         uinfo->value.enumerated.item = cfg->max - 1;
1183                 strlcpy(uinfo->value.enumerated.name,
1184                         cfg->texts[uinfo->value.enumerated.item],
1185                         sizeof(uinfo->value.enumerated.name));
1186         } else {
1187                 uinfo->count = cfg->size;
1188                 uinfo->value.integer.min = 0;
1189                 uinfo->value.integer.max = cfg->max;
1190                 uinfo->type = (cfg->max == 1) ?
1191                         SNDRV_CTL_ELEM_TYPE_BOOLEAN :
1192                         SNDRV_CTL_ELEM_TYPE_INTEGER;
1193         }
1194
1195         return 0;
1196 }
1197
1198 static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
1199                           struct snd_ctl_elem_value *uc)
1200 {
1201         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
1202         int i;
1203
1204         for (i = 0; i < cfg->size; i++)
1205                 if (cfg->texts)
1206                         uc->value.enumerated.item[i] = cfg->val[i];
1207                 else
1208                         uc->value.integer.value[i] = cfg->val[i];
1209
1210         return 0;
1211 }
1212
1213 static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
1214                           struct snd_ctl_elem_value *uc)
1215 {
1216         struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
1217         struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
1218         int i, change = 0;
1219
1220         if (!cfg->accept(cfg->io))
1221                 return 0;
1222
1223         for (i = 0; i < cfg->size; i++) {
1224                 if (cfg->texts) {
1225                         change |= (uc->value.enumerated.item[i] != cfg->val[i]);
1226                         cfg->val[i] = uc->value.enumerated.item[i];
1227                 } else {
1228                         change |= (uc->value.integer.value[i] != cfg->val[i]);
1229                         cfg->val[i] = uc->value.integer.value[i];
1230                 }
1231         }
1232
1233         if (change && cfg->update)
1234                 cfg->update(cfg->io, mod);
1235
1236         return change;
1237 }
1238
1239 int rsnd_kctrl_accept_anytime(struct rsnd_dai_stream *io)
1240 {
1241         return 1;
1242 }
1243
1244 int rsnd_kctrl_accept_runtime(struct rsnd_dai_stream *io)
1245 {
1246         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
1247
1248         return !!runtime;
1249 }
1250
1251 struct rsnd_kctrl_cfg *rsnd_kctrl_init_m(struct rsnd_kctrl_cfg_m *cfg)
1252 {
1253         cfg->cfg.val = cfg->val;
1254
1255         return &cfg->cfg;
1256 }
1257
1258 struct rsnd_kctrl_cfg *rsnd_kctrl_init_s(struct rsnd_kctrl_cfg_s *cfg)
1259 {
1260         cfg->cfg.val = &cfg->val;
1261
1262         return &cfg->cfg;
1263 }
1264
1265 int rsnd_kctrl_new(struct rsnd_mod *mod,
1266                    struct rsnd_dai_stream *io,
1267                    struct snd_soc_pcm_runtime *rtd,
1268                    const unsigned char *name,
1269                    int (*accept)(struct rsnd_dai_stream *io),
1270                    void (*update)(struct rsnd_dai_stream *io,
1271                                   struct rsnd_mod *mod),
1272                    struct rsnd_kctrl_cfg *cfg,
1273                    const char * const *texts,
1274                    int size,
1275                    u32 max)
1276 {
1277         struct snd_card *card = rtd->card->snd_card;
1278         struct snd_kcontrol *kctrl;
1279         struct snd_kcontrol_new knew = {
1280                 .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
1281                 .name           = name,
1282                 .info           = rsnd_kctrl_info,
1283                 .index          = rtd->num,
1284                 .get            = rsnd_kctrl_get,
1285                 .put            = rsnd_kctrl_put,
1286                 .private_value  = (unsigned long)cfg,
1287         };
1288         int ret;
1289
1290         if (size > RSND_MAX_CHANNELS)
1291                 return -EINVAL;
1292
1293         kctrl = snd_ctl_new1(&knew, mod);
1294         if (!kctrl)
1295                 return -ENOMEM;
1296
1297         ret = snd_ctl_add(card, kctrl);
1298         if (ret < 0)
1299                 return ret;
1300
1301         cfg->texts      = texts;
1302         cfg->max        = max;
1303         cfg->size       = size;
1304         cfg->accept     = accept;
1305         cfg->update     = update;
1306         cfg->card       = card;
1307         cfg->kctrl      = kctrl;
1308         cfg->io         = io;
1309
1310         return 0;
1311 }
1312
1313 /*
1314  *              snd_soc_platform
1315  */
1316
1317 #define PREALLOC_BUFFER         (32 * 1024)
1318 #define PREALLOC_BUFFER_MAX     (32 * 1024)
1319
1320 static int rsnd_pcm_new(struct snd_soc_pcm_runtime *rtd)
1321 {
1322         struct snd_soc_dai *dai = rtd->cpu_dai;
1323         struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
1324         int ret;
1325
1326         ret = rsnd_dai_call(pcm_new, &rdai->playback, rtd);
1327         if (ret)
1328                 return ret;
1329
1330         ret = rsnd_dai_call(pcm_new, &rdai->capture, rtd);
1331         if (ret)
1332                 return ret;
1333
1334         return snd_pcm_lib_preallocate_pages_for_all(
1335                 rtd->pcm,
1336                 SNDRV_DMA_TYPE_CONTINUOUS,
1337                 snd_dma_continuous_data(GFP_KERNEL),
1338                 PREALLOC_BUFFER, PREALLOC_BUFFER_MAX);
1339 }
1340
1341 static struct snd_soc_platform_driver rsnd_soc_platform = {
1342         .ops            = &rsnd_pcm_ops,
1343         .pcm_new        = rsnd_pcm_new,
1344 };
1345
1346 static const struct snd_soc_component_driver rsnd_soc_component = {
1347         .name           = "rsnd",
1348 };
1349
1350 static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
1351                                        struct rsnd_dai_stream *io)
1352 {
1353         int ret;
1354
1355         ret = rsnd_dai_call(probe, io, priv);
1356         if (ret == -EAGAIN) {
1357                 struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
1358                 struct rsnd_mod *mod;
1359                 int i;
1360
1361                 /*
1362                  * Fallback to PIO mode
1363                  */
1364
1365                 /*
1366                  * call "remove" for SSI/SRC/DVC
1367                  * SSI will be switch to PIO mode if it was DMA mode
1368                  * see
1369                  *      rsnd_dma_init()
1370                  *      rsnd_ssi_fallback()
1371                  */
1372                 rsnd_dai_call(remove, io, priv);
1373
1374                 /*
1375                  * remove all mod from io
1376                  * and, re connect ssi
1377                  */
1378                 for_each_rsnd_mod(i, mod, io)
1379                         rsnd_dai_disconnect(mod, io, i);
1380                 rsnd_dai_connect(ssi_mod, io, RSND_MOD_SSI);
1381
1382                 /*
1383                  * fallback
1384                  */
1385                 rsnd_dai_call(fallback, io, priv);
1386
1387                 /*
1388                  * retry to "probe".
1389                  * DAI has SSI which is PIO mode only now.
1390                  */
1391                 ret = rsnd_dai_call(probe, io, priv);
1392         }
1393
1394         return ret;
1395 }
1396
1397 /*
1398  *      rsnd probe
1399  */
1400 static int rsnd_probe(struct platform_device *pdev)
1401 {
1402         struct rsnd_priv *priv;
1403         struct device *dev = &pdev->dev;
1404         struct rsnd_dai *rdai;
1405         int (*probe_func[])(struct rsnd_priv *priv) = {
1406                 rsnd_gen_probe,
1407                 rsnd_dma_probe,
1408                 rsnd_ssi_probe,
1409                 rsnd_ssiu_probe,
1410                 rsnd_src_probe,
1411                 rsnd_ctu_probe,
1412                 rsnd_mix_probe,
1413                 rsnd_dvc_probe,
1414                 rsnd_cmd_probe,
1415                 rsnd_adg_probe,
1416                 rsnd_dai_probe,
1417         };
1418         int ret, i;
1419
1420         /*
1421          *      init priv data
1422          */
1423         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1424         if (!priv) {
1425                 dev_err(dev, "priv allocate failed\n");
1426                 return -ENODEV;
1427         }
1428
1429         priv->pdev      = pdev;
1430         priv->flags     = (unsigned long)of_device_get_match_data(dev);
1431         spin_lock_init(&priv->lock);
1432
1433         /*
1434          *      init each module
1435          */
1436         for (i = 0; i < ARRAY_SIZE(probe_func); i++) {
1437                 ret = probe_func[i](priv);
1438                 if (ret)
1439                         return ret;
1440         }
1441
1442         for_each_rsnd_dai(rdai, priv, i) {
1443                 ret = rsnd_rdai_continuance_probe(priv, &rdai->playback);
1444                 if (ret)
1445                         goto exit_snd_probe;
1446
1447                 ret = rsnd_rdai_continuance_probe(priv, &rdai->capture);
1448                 if (ret)
1449                         goto exit_snd_probe;
1450         }
1451
1452         dev_set_drvdata(dev, priv);
1453
1454         /*
1455          *      asoc register
1456          */
1457         ret = snd_soc_register_platform(dev, &rsnd_soc_platform);
1458         if (ret < 0) {
1459                 dev_err(dev, "cannot snd soc register\n");
1460                 return ret;
1461         }
1462
1463         ret = snd_soc_register_component(dev, &rsnd_soc_component,
1464                                          priv->daidrv, rsnd_rdai_nr(priv));
1465         if (ret < 0) {
1466                 dev_err(dev, "cannot snd dai register\n");
1467                 goto exit_snd_soc;
1468         }
1469
1470         pm_runtime_enable(dev);
1471
1472         dev_info(dev, "probed\n");
1473         return ret;
1474
1475 exit_snd_soc:
1476         snd_soc_unregister_platform(dev);
1477 exit_snd_probe:
1478         for_each_rsnd_dai(rdai, priv, i) {
1479                 rsnd_dai_call(remove, &rdai->playback, priv);
1480                 rsnd_dai_call(remove, &rdai->capture, priv);
1481         }
1482
1483         return ret;
1484 }
1485
1486 static int rsnd_remove(struct platform_device *pdev)
1487 {
1488         struct rsnd_priv *priv = dev_get_drvdata(&pdev->dev);
1489         struct rsnd_dai *rdai;
1490         void (*remove_func[])(struct rsnd_priv *priv) = {
1491                 rsnd_ssi_remove,
1492                 rsnd_ssiu_remove,
1493                 rsnd_src_remove,
1494                 rsnd_ctu_remove,
1495                 rsnd_mix_remove,
1496                 rsnd_dvc_remove,
1497                 rsnd_cmd_remove,
1498                 rsnd_adg_remove,
1499         };
1500         int ret = 0, i;
1501
1502         pm_runtime_disable(&pdev->dev);
1503
1504         for_each_rsnd_dai(rdai, priv, i) {
1505                 ret |= rsnd_dai_call(remove, &rdai->playback, priv);
1506                 ret |= rsnd_dai_call(remove, &rdai->capture, priv);
1507         }
1508
1509         for (i = 0; i < ARRAY_SIZE(remove_func); i++)
1510                 remove_func[i](priv);
1511
1512         snd_soc_unregister_component(&pdev->dev);
1513         snd_soc_unregister_platform(&pdev->dev);
1514
1515         return ret;
1516 }
1517
1518 static int rsnd_suspend(struct device *dev)
1519 {
1520         struct rsnd_priv *priv = dev_get_drvdata(dev);
1521
1522         rsnd_adg_clk_disable(priv);
1523
1524         return 0;
1525 }
1526
1527 static int rsnd_resume(struct device *dev)
1528 {
1529         struct rsnd_priv *priv = dev_get_drvdata(dev);
1530
1531         rsnd_adg_clk_enable(priv);
1532
1533         return 0;
1534 }
1535
1536 static const struct dev_pm_ops rsnd_pm_ops = {
1537         .suspend                = rsnd_suspend,
1538         .resume                 = rsnd_resume,
1539 };
1540
1541 static struct platform_driver rsnd_driver = {
1542         .driver = {
1543                 .name   = "rcar_sound",
1544                 .pm     = &rsnd_pm_ops,
1545                 .of_match_table = rsnd_of_match,
1546         },
1547         .probe          = rsnd_probe,
1548         .remove         = rsnd_remove,
1549 };
1550 module_platform_driver(rsnd_driver);
1551
1552 MODULE_LICENSE("GPL");
1553 MODULE_DESCRIPTION("Renesas R-Car audio driver");
1554 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
1555 MODULE_ALIAS("platform:rcar-pcm-audio");