projects / deliverable / linux.git / blob
? search:


e28d9f6ddda6801d9e02581b1bba5d99d067dec2
[deliverable/linux.git] / sound / soc / sh / rcar / src.c
1 /*
2 * Renesas R-Car SRC support
3 *
4 * Copyright (C) 2013 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11 #include "rsnd.h"
12
13 #define SRC_NAME "src"
14
15 /* SRCx_STATUS */
16 #define OUF_SRCO ((1 << 12) | (1 << 13))
17 #define OUF_SRCI ((1 << 9) | (1 << 8))
18
19 /* SCU_SYSTEM_STATUS0/1 */
20 #define OUF_SRC(id) ((1 << (id + 16)) | (1 << id))
21
22 struct rsnd_src {
23 struct rsnd_src_platform_info *info; /* rcar_snd.h */
24 struct rsnd_mod mod;
25 struct rsnd_kctrl_cfg_s sen; /* sync convert enable */
26 struct rsnd_kctrl_cfg_s sync; /* sync convert */
27 u32 convert_rate; /* sampling rate convert */
28 int err;
29 };
30
31 #define RSND_SRC_NAME_SIZE 16
32
33 #define rsnd_enable_sync_convert(src) ((src)->sen.val)
34 #define rsnd_src_of_node(priv) \
35 of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,src")
36
37 #define rsnd_mod_to_src(_mod) \
38 container_of((_mod), struct rsnd_src, mod)
39
40 #define for_each_rsnd_src(pos, priv, i) \
41 for ((i) = 0; \
42 ((i) < rsnd_src_nr(priv)) && \
43 ((pos) = (struct rsnd_src *)(priv)->src + i); \
44 i++)
45
46
47 /*
48 * image of SRC (Sampling Rate Converter)
49 *
50 * 96kHz <-> +-----+ 48kHz +-----+ 48kHz +-------+
51 * 48kHz <-> | SRC | <------> | SSI | <-----> | codec |
52 * 44.1kHz <-> +-----+ +-----+ +-------+
53 * ...
54 *
55 */
56
57 /*
58 * src.c is caring...
59 *
60 * Gen1
61 *
62 * [mem] -> [SRU] -> [SSI]
63 * |--------|
64 *
65 * Gen2
66 *
67 * [mem] -> [SRC] -> [SSIU] -> [SSI]
68 * |-----------------|
69 */
70
71 /*
72 * How to use SRC bypass mode for debugging
73 *
74 * SRC has bypass mode, and it is useful for debugging.
75 * In Gen2 case,
76 * SRCm_MODE controls whether SRC is used or not
77 * SSI_MODE0 controls whether SSIU which receives SRC data
78 * is used or not.
79 * Both SRCm_MODE/SSI_MODE0 settings are needed if you use SRC,
80 * but SRC bypass mode needs SSI_MODE0 only.
81 *
82 * This driver request
83 * struct rsnd_src_platform_info {
84 * u32 convert_rate;
85 * int dma_id;
86 * }
87 *
88 * rsnd_src_convert_rate() indicates
89 * above convert_rate, and it controls
90 * whether SRC is used or not.
91 *
92 * ex) doesn't use SRC
93 * static struct rsnd_dai_platform_info rsnd_dai = {
94 * .playback = { .ssi = &rsnd_ssi[0], },
95 * };
96 *
97 * ex) uses SRC
98 * static struct rsnd_src_platform_info rsnd_src[] = {
99 * RSND_SCU(48000, 0),
100 * ...
101 * };
102 * static struct rsnd_dai_platform_info rsnd_dai = {
103 * .playback = { .ssi = &rsnd_ssi[0], .src = &rsnd_src[0] },
104 * };
105 *
106 * ex) uses SRC bypass mode
107 * static struct rsnd_src_platform_info rsnd_src[] = {
108 * RSND_SCU(0, 0),
109 * ...
110 * };
111 * static struct rsnd_dai_platform_info rsnd_dai = {
112 * .playback = { .ssi = &rsnd_ssi[0], .src = &rsnd_src[0] },
113 * };
114 *
115 */
116
117 /*
118 * Gen1/Gen2 common functions
119 */
120 static struct dma_chan *rsnd_src_dma_req(struct rsnd_mod *mod)
121 {
122 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
123 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
124 int is_play = rsnd_io_is_play(io);
125
126 return rsnd_dma_request_channel(rsnd_src_of_node(priv),
127 mod,
128 is_play ? "rx" : "tx");
129 }
130
131 int rsnd_src_ssiu_start(struct rsnd_mod *ssi_mod,
132 int use_busif)
133 {
134 struct rsnd_dai_stream *io = rsnd_mod_to_io(ssi_mod);
135 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
136 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
137 int ssi_id = rsnd_mod_id(ssi_mod);
138
139 /*
140 * SSI_MODE0
141 */
142 rsnd_mod_bset(ssi_mod, SSI_MODE0, (1 << ssi_id),
143 !use_busif << ssi_id);
144
145 /*
146 * SSI_MODE1
147 */
148 if (rsnd_ssi_is_pin_sharing(ssi_mod)) {
149 int shift = -1;
150 switch (ssi_id) {
151 case 1:
152 shift = 0;
153 break;
154 case 2:
155 shift = 2;
156 break;
157 case 4:
158 shift = 16;
159 break;
160 }
161
162 if (shift >= 0)
163 rsnd_mod_bset(ssi_mod, SSI_MODE1,
164 0x3 << shift,
165 rsnd_rdai_is_clk_master(rdai) ?
166 0x2 << shift : 0x1 << shift);
167 }
168
169 /*
170 * DMA settings for SSIU
171 */
172 if (use_busif) {
173 u32 val = 0x76543210;
174 u32 mask = ~0;
175
176 rsnd_mod_write(ssi_mod, SSI_BUSIF_ADINR,
177 rsnd_get_adinr(ssi_mod));
178 rsnd_mod_write(ssi_mod, SSI_BUSIF_MODE, 1);
179 rsnd_mod_write(ssi_mod, SSI_CTRL, 0x1);
180
181 mask <<= runtime->channels * 4;
182 val = val & mask;
183
184 switch (runtime->sample_bits) {
185 case 16:
186 val |= 0x67452301 & ~mask;
187 break;
188 case 32:
189 val |= 0x76543210 & ~mask;
190 break;
191 }
192 rsnd_mod_write(ssi_mod, BUSIF_DALIGN, val);
193
194 }
195
196 return 0;
197 }
198
199 int rsnd_src_ssiu_stop(struct rsnd_mod *ssi_mod)
200 {
201 /*
202 * DMA settings for SSIU
203 */
204 rsnd_mod_write(ssi_mod, SSI_CTRL, 0);
205
206 return 0;
207 }
208
209 int rsnd_src_ssi_irq_enable(struct rsnd_mod *ssi_mod)
210 {
211 struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
212
213 if (rsnd_is_gen1(priv))
214 return 0;
215
216 /* enable SSI interrupt if Gen2 */
217 if (rsnd_ssi_is_dma_mode(ssi_mod))
218 rsnd_mod_write(ssi_mod, INT_ENABLE, 0x0e000000);
219 else
220 rsnd_mod_write(ssi_mod, INT_ENABLE, 0x0f000000);
221
222 return 0;
223 }
224
225 int rsnd_src_ssi_irq_disable(struct rsnd_mod *ssi_mod)
226 {
227 struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
228
229 if (rsnd_is_gen1(priv))
230 return 0;
231
232 /* disable SSI interrupt if Gen2 */
233 rsnd_mod_write(ssi_mod, INT_ENABLE, 0x00000000);
234
235 return 0;
236 }
237
238 static u32 rsnd_src_convert_rate(struct rsnd_src *src)
239 {
240 struct rsnd_mod *mod = &src->mod;
241 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
242 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
243 u32 convert_rate;
244
245 if (!runtime)
246 return 0;
247
248 if (!rsnd_enable_sync_convert(src))
249 return src->convert_rate;
250
251 convert_rate = src->sync.val;
252
253 if (!convert_rate)
254 convert_rate = src->convert_rate;
255
256 if (!convert_rate)
257 convert_rate = runtime->rate;
258
259 return convert_rate;
260 }
261
262 unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv,
263 struct rsnd_dai_stream *io,
264 struct snd_pcm_runtime *runtime)
265 {
266 struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
267 struct rsnd_src *src;
268 unsigned int rate = 0;
269
270 if (src_mod) {
271 src = rsnd_mod_to_src(src_mod);
272
273 /*
274 * return convert rate if SRC is used,
275 * otherwise, return runtime->rate as usual
276 */
277 rate = rsnd_src_convert_rate(src);
278 }
279
280 if (!rate)
281 rate = runtime->rate;
282
283 return rate;
284 }
285
286 static int rsnd_src_set_convert_rate(struct rsnd_mod *mod)
287 {
288 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
289 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
290 struct rsnd_src *src = rsnd_mod_to_src(mod);
291 u32 convert_rate = rsnd_src_convert_rate(src);
292 u32 fsrate = 0;
293
294 if (convert_rate)
295 fsrate = 0x0400000 / convert_rate * runtime->rate;
296
297 /* set/clear soft reset */
298 rsnd_mod_write(mod, SRC_SWRSR, 0);
299 rsnd_mod_write(mod, SRC_SWRSR, 1);
300
301 /* Set channel number and output bit length */
302 rsnd_mod_write(mod, SRC_ADINR, rsnd_get_adinr(mod));
303
304 /* Enable the initial value of IFS */
305 if (fsrate) {
306 rsnd_mod_write(mod, SRC_IFSCR, 1);
307
308 /* Set initial value of IFS */
309 rsnd_mod_write(mod, SRC_IFSVR, fsrate);
310 }
311
312 /* use DMA transfer */
313 rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);
314
315 return 0;
316 }
317
318 static int rsnd_src_hw_params(struct rsnd_mod *mod,
319 struct rsnd_dai_stream *io,
320 struct snd_pcm_substream *substream,
321 struct snd_pcm_hw_params *fe_params)
322 {
323 struct rsnd_src *src = rsnd_mod_to_src(mod);
324 struct snd_soc_pcm_runtime *fe = substream->private_data;
325
326 /* default value (mainly for non-DT) */
327 src->convert_rate = src->info->convert_rate;
328
329 /*
330 * SRC assumes that it is used under DPCM if user want to use
331 * sampling rate convert. Then, SRC should be FE.
332 * And then, this function will be called *after* BE settings.
333 * this means, each BE already has fixuped hw_params.
334 * see
335 * dpcm_fe_dai_hw_params()
336 * dpcm_be_dai_hw_params()
337 */
338 if (fe->dai_link->dynamic) {
339 int stream = substream->stream;
340 struct snd_soc_dpcm *dpcm;
341 struct snd_pcm_hw_params *be_params;
342
343 list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
344 be_params = &dpcm->hw_params;
345
346 if (params_rate(fe_params) != params_rate(be_params))
347 src->convert_rate = params_rate(be_params);
348 }
349 }
350
351 return 0;
352 }
353
354 static int rsnd_src_init(struct rsnd_mod *mod,
355 struct rsnd_priv *priv)
356 {
357 struct rsnd_src *src = rsnd_mod_to_src(mod);
358
359 rsnd_mod_hw_start(mod);
360
361 src->err = 0;
362
363 /* reset sync convert_rate */
364 src->sync.val = 0;
365
366 /*
367 * Initialize the operation of the SRC internal circuits
368 * see rsnd_src_start()
369 */
370 rsnd_mod_write(mod, SRC_SRCIR, 1);
371
372 return 0;
373 }
374
375 static int rsnd_src_quit(struct rsnd_mod *mod,
376 struct rsnd_dai_stream *io,
377 struct rsnd_priv *priv)
378 {
379 struct rsnd_src *src = rsnd_mod_to_src(mod);
380 struct device *dev = rsnd_priv_to_dev(priv);
381
382 rsnd_mod_hw_stop(mod);
383
384 if (src->err)
385 dev_warn(dev, "%s[%d] under/over flow err = %d\n",
386 rsnd_mod_name(mod), rsnd_mod_id(mod), src->err);
387
388 src->convert_rate = 0;
389
390 /* reset sync convert_rate */
391 src->sync.val = 0;
392
393 return 0;
394 }
395
396 static int rsnd_src_start(struct rsnd_mod *mod)
397 {
398 /*
399 * Cancel the initialization and operate the SRC function
400 * see rsnd_src_init()
401 */
402 rsnd_mod_write(mod, SRC_SRCIR, 0);
403
404 return 0;
405 }
406
407 static int rsnd_src_stop(struct rsnd_mod *mod)
408 {
409 /* nothing to do */
410 return 0;
411 }
412
413 /*
414 * Gen1 functions
415 */
416 static int rsnd_src_set_route_gen1(struct rsnd_mod *mod)
417 {
418 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
419 struct src_route_config {
420 u32 mask;
421 int shift;
422 } routes[] = {
423 { 0xF, 0, }, /* 0 */
424 { 0xF, 4, }, /* 1 */
425 { 0xF, 8, }, /* 2 */
426 { 0x7, 12, }, /* 3 */
427 { 0x7, 16, }, /* 4 */
428 { 0x7, 20, }, /* 5 */
429 { 0x7, 24, }, /* 6 */
430 { 0x3, 28, }, /* 7 */
431 { 0x3, 30, }, /* 8 */
432 };
433 u32 mask;
434 u32 val;
435 int id;
436
437 id = rsnd_mod_id(mod);
438 if (id < 0 || id >= ARRAY_SIZE(routes))
439 return -EIO;
440
441 /*
442 * SRC_ROUTE_SELECT
443 */
444 val = rsnd_io_is_play(io) ? 0x1 : 0x2;
445 val = val << routes[id].shift;
446 mask = routes[id].mask << routes[id].shift;
447
448 rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val);
449
450 return 0;
451 }
452
453 static int rsnd_src_set_convert_timing_gen1(struct rsnd_mod *mod)
454 {
455 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
456 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
457 struct rsnd_src *src = rsnd_mod_to_src(mod);
458 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
459 u32 convert_rate = rsnd_src_convert_rate(src);
460 u32 mask;
461 u32 val;
462 int shift;
463 int id = rsnd_mod_id(mod);
464 int ret;
465
466 /*
467 * SRC_TIMING_SELECT
468 */
469 shift = (id % 4) * 8;
470 mask = 0x1F << shift;
471
472 /*
473 * ADG is used as source clock if SRC was used,
474 * then, SSI WS is used as destination clock.
475 * SSI WS is used as source clock if SRC is not used
476 * (when playback, source/destination become reverse when capture)
477 */
478 ret = 0;
479 if (convert_rate) {
480 /* use ADG */
481 val = 0;
482 ret = rsnd_adg_set_convert_clk_gen1(priv, mod,
483 runtime->rate,
484 convert_rate);
485 } else if (8 == id) {
486 /* use SSI WS, but SRU8 is special */
487 val = id << shift;
488 } else {
489 /* use SSI WS */
490 val = (id + 1) << shift;
491 }
492
493 if (ret < 0)
494 return ret;
495
496 switch (id / 4) {
497 case 0:
498 rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val);
499 break;
500 case 1:
501 rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val);
502 break;
503 case 2:
504 rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val);
505 break;
506 }
507
508 return 0;
509 }
510
511 static int rsnd_src_set_convert_rate_gen1(struct rsnd_mod *mod)
512 {
513 struct rsnd_src *src = rsnd_mod_to_src(mod);
514 int ret;
515
516 ret = rsnd_src_set_convert_rate(mod);
517 if (ret < 0)
518 return ret;
519
520 /* Select SRC mode (fixed value) */
521 rsnd_mod_write(mod, SRC_SRCCR, 0x00010110);
522
523 /* Set the restriction value of the FS ratio (98%) */
524 rsnd_mod_write(mod, SRC_MNFSR,
525 rsnd_mod_read(mod, SRC_IFSVR) / 100 * 98);
526
527 /* Gen1/Gen2 are not compatible */
528 if (rsnd_src_convert_rate(src))
529 rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
530
531 /* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */
532
533 return 0;
534 }
535
536 static int rsnd_src_init_gen1(struct rsnd_mod *mod,
537 struct rsnd_dai_stream *io,
538 struct rsnd_priv *priv)
539 {
540 int ret;
541
542 ret = rsnd_src_init(mod, priv);
543 if (ret < 0)
544 return ret;
545
546 ret = rsnd_src_set_route_gen1(mod);
547 if (ret < 0)
548 return ret;
549
550 ret = rsnd_src_set_convert_rate_gen1(mod);
551 if (ret < 0)
552 return ret;
553
554 ret = rsnd_src_set_convert_timing_gen1(mod);
555 if (ret < 0)
556 return ret;
557
558 return 0;
559 }
560
561 static int rsnd_src_start_gen1(struct rsnd_mod *mod,
562 struct rsnd_dai_stream *io,
563 struct rsnd_priv *priv)
564 {
565 int id = rsnd_mod_id(mod);
566
567 rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), (1 << id));
568
569 return rsnd_src_start(mod);
570 }
571
572 static int rsnd_src_stop_gen1(struct rsnd_mod *mod,
573 struct rsnd_dai_stream *io,
574 struct rsnd_priv *priv)
575 {
576 int id = rsnd_mod_id(mod);
577
578 rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), 0);
579
580 return rsnd_src_stop(mod);
581 }
582
583 static struct rsnd_mod_ops rsnd_src_gen1_ops = {
584 .name = SRC_NAME,
585 .dma_req = rsnd_src_dma_req,
586 .init = rsnd_src_init_gen1,
587 .quit = rsnd_src_quit,
588 .start = rsnd_src_start_gen1,
589 .stop = rsnd_src_stop_gen1,
590 .hw_params = rsnd_src_hw_params,
591 };
592
593 /*
594 * Gen2 functions
595 */
596 #define rsnd_src_irq_enable_gen2(mod) rsnd_src_irq_ctrol_gen2(mod, 1)
597 #define rsnd_src_irq_disable_gen2(mod) rsnd_src_irq_ctrol_gen2(mod, 0)
598 static void rsnd_src_irq_ctrol_gen2(struct rsnd_mod *mod, int enable)
599 {
600 struct rsnd_src *src = rsnd_mod_to_src(mod);
601 u32 sys_int_val, int_val, sys_int_mask;
602 int irq = src->info->irq;
603 int id = rsnd_mod_id(mod);
604
605 sys_int_val =
606 sys_int_mask = OUF_SRC(id);
607 int_val = 0x3300;
608
609 /*
610 * IRQ is not supported on non-DT
611 * see
612 * rsnd_src_probe_gen2()
613 */
614 if ((irq <= 0) || !enable) {
615 sys_int_val = 0;
616 int_val = 0;
617 }
618
619 rsnd_mod_write(mod, SRC_INT_ENABLE0, int_val);
620 rsnd_mod_bset(mod, SCU_SYS_INT_EN0, sys_int_mask, sys_int_val);
621 rsnd_mod_bset(mod, SCU_SYS_INT_EN1, sys_int_mask, sys_int_val);
622 }
623
624 static void rsnd_src_error_clear_gen2(struct rsnd_mod *mod)
625 {
626 u32 val = OUF_SRC(rsnd_mod_id(mod));
627
628 rsnd_mod_bset(mod, SCU_SYS_STATUS0, val, val);
629 rsnd_mod_bset(mod, SCU_SYS_STATUS1, val, val);
630 }
631
632 static bool rsnd_src_error_record_gen2(struct rsnd_mod *mod)
633 {
634 u32 val = OUF_SRC(rsnd_mod_id(mod));
635 bool ret = false;
636
637 if ((rsnd_mod_read(mod, SCU_SYS_STATUS0) & val) ||
638 (rsnd_mod_read(mod, SCU_SYS_STATUS1) & val)) {
639 struct rsnd_src *src = rsnd_mod_to_src(mod);
640
641 src->err++;
642 ret = true;
643 }
644
645 /* clear error static */
646 rsnd_src_error_clear_gen2(mod);
647
648 return ret;
649 }
650
651 static int _rsnd_src_start_gen2(struct rsnd_mod *mod)
652 {
653 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
654 u32 val = rsnd_io_to_mod_dvc(io) ? 0x01 : 0x11;
655
656 rsnd_mod_write(mod, SRC_CTRL, val);
657
658 rsnd_src_error_clear_gen2(mod);
659
660 rsnd_src_start(mod);
661
662 rsnd_src_irq_enable_gen2(mod);
663
664 return 0;
665 }
666
667 static int _rsnd_src_stop_gen2(struct rsnd_mod *mod)
668 {
669 rsnd_src_irq_disable_gen2(mod);
670
671 rsnd_mod_write(mod, SRC_CTRL, 0);
672
673 rsnd_src_error_record_gen2(mod);
674
675 return rsnd_src_stop(mod);
676 }
677
678 static irqreturn_t rsnd_src_interrupt_gen2(int irq, void *data)
679 {
680 struct rsnd_mod *mod = data;
681 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
682
683 spin_lock(&priv->lock);
684
685 /* ignore all cases if not working */
686 if (!rsnd_mod_is_working(mod))
687 goto rsnd_src_interrupt_gen2_out;
688
689 if (rsnd_src_error_record_gen2(mod)) {
690 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
691 struct rsnd_src *src = rsnd_mod_to_src(mod);
692 struct device *dev = rsnd_priv_to_dev(priv);
693
694 dev_dbg(dev, "%s[%d] restart\n",
695 rsnd_mod_name(mod), rsnd_mod_id(mod));
696
697 _rsnd_src_stop_gen2(mod);
698 if (src->err < 1024)
699 _rsnd_src_start_gen2(mod);
700 else
701 dev_warn(dev, "no more SRC restart\n");
702 }
703 rsnd_src_interrupt_gen2_out:
704 spin_unlock(&priv->lock);
705
706 return IRQ_HANDLED;
707 }
708
709 static int rsnd_src_set_convert_rate_gen2(struct rsnd_mod *mod)
710 {
711 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
712 struct device *dev = rsnd_priv_to_dev(priv);
713 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
714 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
715 struct rsnd_src *src = rsnd_mod_to_src(mod);
716 u32 convert_rate = rsnd_src_convert_rate(src);
717 u32 cr, route;
718 uint ratio;
719 int ret;
720
721 /* 6 - 1/6 are very enough ratio for SRC_BSDSR */
722 if (!convert_rate)
723 ratio = 0;
724 else if (convert_rate > runtime->rate)
725 ratio = 100 * convert_rate / runtime->rate;
726 else
727 ratio = 100 * runtime->rate / convert_rate;
728
729 if (ratio > 600) {
730 dev_err(dev, "FSO/FSI ratio error\n");
731 return -EINVAL;
732 }
733
734 ret = rsnd_src_set_convert_rate(mod);
735 if (ret < 0)
736 return ret;
737
738 cr = 0x00011110;
739 route = 0x0;
740 if (convert_rate) {
741 route = 0x1;
742
743 if (rsnd_enable_sync_convert(src)) {
744 cr |= 0x1;
745 route |= rsnd_io_is_play(io) ?
746 (0x1 << 24) : (0x1 << 25);
747 }
748 }
749
750 rsnd_mod_write(mod, SRC_SRCCR, cr);
751 rsnd_mod_write(mod, SRC_ROUTE_MODE0, route);
752
753 switch (rsnd_mod_id(mod)) {
754 case 5:
755 case 6:
756 case 7:
757 case 8:
758 rsnd_mod_write(mod, SRC_BSDSR, 0x02400000);
759 break;
760 default:
761 rsnd_mod_write(mod, SRC_BSDSR, 0x01800000);
762 break;
763 }
764
765 rsnd_mod_write(mod, SRC_BSISR, 0x00100060);
766
767 return 0;
768 }
769
770 static int rsnd_src_set_convert_timing_gen2(struct rsnd_mod *mod)
771 {
772 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
773 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
774 struct rsnd_src *src = rsnd_mod_to_src(mod);
775 u32 convert_rate = rsnd_src_convert_rate(src);
776 int ret;
777
778 if (convert_rate)
779 ret = rsnd_adg_set_convert_clk_gen2(mod, io,
780 runtime->rate,
781 convert_rate);
782 else
783 ret = rsnd_adg_set_convert_timing_gen2(mod, io);
784
785 return ret;
786 }
787
788 static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
789 struct rsnd_dai_stream *io,
790 struct rsnd_priv *priv)
791 {
792 struct rsnd_src *src = rsnd_mod_to_src(mod);
793 struct device *dev = rsnd_priv_to_dev(priv);
794 int irq = src->info->irq;
795 int ret;
796
797 if (irq > 0) {
798 /*
799 * IRQ is not supported on non-DT
800 * see
801 * rsnd_src_irq_enable_gen2()
802 */
803 ret = devm_request_irq(dev, irq,
804 rsnd_src_interrupt_gen2,
805 IRQF_SHARED,
806 dev_name(dev), mod);
807 if (ret)
808 return ret;
809 }
810
811 ret = rsnd_dma_init(priv,
812 rsnd_mod_to_dma(mod),
813 src->info->dma_id);
814
815 return ret;
816 }
817
818 static int rsnd_src_remove_gen2(struct rsnd_mod *mod,
819 struct rsnd_dai_stream *io,
820 struct rsnd_priv *priv)
821 {
822 rsnd_dma_quit(rsnd_mod_to_dma(mod));
823
824 return 0;
825 }
826
827 static int rsnd_src_init_gen2(struct rsnd_mod *mod,
828 struct rsnd_dai_stream *io,
829 struct rsnd_priv *priv)
830 {
831 int ret;
832
833 ret = rsnd_src_init(mod, priv);
834 if (ret < 0)
835 return ret;
836
837 ret = rsnd_src_set_convert_rate_gen2(mod);
838 if (ret < 0)
839 return ret;
840
841 ret = rsnd_src_set_convert_timing_gen2(mod);
842 if (ret < 0)
843 return ret;
844
845 return 0;
846 }
847
848 static int rsnd_src_start_gen2(struct rsnd_mod *mod,
849 struct rsnd_dai_stream *io,
850 struct rsnd_priv *priv)
851 {
852 rsnd_dma_start(rsnd_mod_to_dma(mod));
853
854 return _rsnd_src_start_gen2(mod);
855 }
856
857 static int rsnd_src_stop_gen2(struct rsnd_mod *mod,
858 struct rsnd_dai_stream *io,
859 struct rsnd_priv *priv)
860 {
861 int ret;
862
863 ret = _rsnd_src_stop_gen2(mod);
864
865 rsnd_dma_stop(rsnd_mod_to_dma(mod));
866
867 return ret;
868 }
869
870 static void rsnd_src_reconvert_update(struct rsnd_mod *mod)
871 {
872 struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
873 struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
874 struct rsnd_src *src = rsnd_mod_to_src(mod);
875 u32 convert_rate = rsnd_src_convert_rate(src);
876 u32 fsrate;
877
878 if (!runtime)
879 return;
880
881 if (!convert_rate)
882 convert_rate = runtime->rate;
883
884 fsrate = 0x0400000 / convert_rate * runtime->rate;
885
886 /* update IFS */
887 rsnd_mod_write(mod, SRC_IFSVR, fsrate);
888 }
889
890 static int rsnd_src_pcm_new(struct rsnd_mod *mod,
891 struct rsnd_dai_stream *io,
892 struct snd_soc_pcm_runtime *rtd)
893 {
894 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
895 struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
896 struct rsnd_src *src = rsnd_mod_to_src(mod);
897 int ret;
898
899 /*
900 * enable SRC sync convert if possible
901 */
902
903 /*
904 * Gen1 is not supported
905 */
906 if (rsnd_is_gen1(priv))
907 return 0;
908
909 /*
910 * SRC sync convert needs clock master
911 */
912 if (!rsnd_rdai_is_clk_master(rdai))
913 return 0;
914
915 /*
916 * We can't use SRC sync convert
917 * if it has DVC
918 */
919 if (rsnd_io_to_mod_dvc(io))
920 return 0;
921
922 /*
923 * enable sync convert
924 */
925 ret = rsnd_kctrl_new_s(mod, rtd,
926 rsnd_io_is_play(io) ?
927 "SRC Out Rate Switch" :
928 "SRC In Rate Switch",
929 rsnd_src_reconvert_update,
930 &src->sen, 1);
931 if (ret < 0)
932 return ret;
933
934 ret = rsnd_kctrl_new_s(mod, rtd,
935 rsnd_io_is_play(io) ?
936 "SRC Out Rate" :
937 "SRC In Rate",
938 rsnd_src_reconvert_update,
939 &src->sync, 192000);
940
941 return ret;
942 }
943
944 static struct rsnd_mod_ops rsnd_src_gen2_ops = {
945 .name = SRC_NAME,
946 .dma_req = rsnd_src_dma_req,
947 .probe = rsnd_src_probe_gen2,
948 .remove = rsnd_src_remove_gen2,
949 .init = rsnd_src_init_gen2,
950 .quit = rsnd_src_quit,
951 .start = rsnd_src_start_gen2,
952 .stop = rsnd_src_stop_gen2,
953 .hw_params = rsnd_src_hw_params,
954 .pcm_new = rsnd_src_pcm_new,
955 };
956
957 struct rsnd_mod *rsnd_src_mod_get(struct rsnd_priv *priv, int id)
958 {
959 if (WARN_ON(id < 0 || id >= rsnd_src_nr(priv)))
960 id = 0;
961
962 return &((struct rsnd_src *)(priv->src) + id)->mod;
963 }
964
965 static void rsnd_of_parse_src(struct platform_device *pdev,
966 const struct rsnd_of_data *of_data,
967 struct rsnd_priv *priv)
968 {
969 struct device_node *src_node;
970 struct device_node *np;
971 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
972 struct rsnd_src_platform_info *src_info;
973 struct device *dev = &pdev->dev;
974 int nr, i;
975
976 if (!of_data)
977 return;
978
979 src_node = rsnd_src_of_node(priv);
980 if (!src_node)
981 return;
982
983 nr = of_get_child_count(src_node);
984 if (!nr)
985 goto rsnd_of_parse_src_end;
986
987 src_info = devm_kzalloc(dev,
988 sizeof(struct rsnd_src_platform_info) * nr,
989 GFP_KERNEL);
990 if (!src_info) {
991 dev_err(dev, "src info allocation error\n");
992 goto rsnd_of_parse_src_end;
993 }
994
995 info->src_info = src_info;
996 info->src_info_nr = nr;
997
998 i = 0;
999 for_each_child_of_node(src_node, np) {
1000 src_info[i].irq = irq_of_parse_and_map(np, 0);
1001
1002 i++;
1003 }
1004
1005 rsnd_of_parse_src_end:
1006 of_node_put(src_node);
1007 }
1008
1009 int rsnd_src_probe(struct platform_device *pdev,
1010 const struct rsnd_of_data *of_data,
1011 struct rsnd_priv *priv)
1012 {
1013 struct rcar_snd_info *info = rsnd_priv_to_info(priv);
1014 struct device *dev = rsnd_priv_to_dev(priv);
1015 struct rsnd_src *src;
1016 struct rsnd_mod_ops *ops;
1017 struct clk *clk;
1018 char name[RSND_SRC_NAME_SIZE];
1019 int i, nr, ret;
1020
1021 ops = NULL;
1022 if (rsnd_is_gen1(priv))
1023 ops = &rsnd_src_gen1_ops;
1024 if (rsnd_is_gen2(priv))
1025 ops = &rsnd_src_gen2_ops;
1026 if (!ops) {
1027 dev_err(dev, "unknown Generation\n");
1028 return -EIO;
1029 }
1030
1031 rsnd_of_parse_src(pdev, of_data, priv);
1032
1033 /*
1034 * init SRC
1035 */
1036 nr = info->src_info_nr;
1037 if (!nr)
1038 return 0;
1039
1040 src = devm_kzalloc(dev, sizeof(*src) * nr, GFP_KERNEL);
1041 if (!src) {
1042 dev_err(dev, "SRC allocate failed\n");
1043 return -ENOMEM;
1044 }
1045
1046 priv->src_nr = nr;
1047 priv->src = src;
1048
1049 for_each_rsnd_src(src, priv, i) {
1050 snprintf(name, RSND_SRC_NAME_SIZE, "%s.%d",
1051 SRC_NAME, i);
1052
1053 clk = devm_clk_get(dev, name);
1054 if (IS_ERR(clk))
1055 return PTR_ERR(clk);
1056
1057 src->info = &info->src_info[i];
1058
1059 ret = rsnd_mod_init(priv, &src->mod, ops, clk, RSND_MOD_SRC, i);
1060 if (ret)
1061 return ret;
1062 }
1063
1064 return 0;
1065 }
1066
1067 void rsnd_src_remove(struct platform_device *pdev,
1068 struct rsnd_priv *priv)
1069 {
1070 struct rsnd_src *src;
1071 int i;
1072
1073 for_each_rsnd_src(src, priv, i) {
1074 rsnd_mod_quit(&src->mod);
1075 }
1076 }
Linux kernel - Deliverables
This page took 0.081758 seconds and 5 git commands to generate.