1
2
3
4
5
6
7
8#include <dt-bindings/sound/samsung-i2s.h>
9#include <linux/delay.h>
10#include <linux/slab.h>
11#include <linux/clk.h>
12#include <linux/clk-provider.h>
13#include <linux/io.h>
14#include <linux/module.h>
15#include <linux/of.h>
16#include <linux/pm_runtime.h>
17
18#include <sound/soc.h>
19#include <sound/pcm_params.h>
20
21#include <linux/platform_data/asoc-s3c.h>
22
23#include "dma.h"
24#include "idma.h"
25#include "i2s.h"
26#include "i2s-regs.h"
27
28#define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
29
30#define SAMSUNG_I2S_ID_PRIMARY 1
31#define SAMSUNG_I2S_ID_SECONDARY 2
32
33struct samsung_i2s_variant_regs {
34 unsigned int bfs_off;
35 unsigned int rfs_off;
36 unsigned int sdf_off;
37 unsigned int txr_off;
38 unsigned int rclksrc_off;
39 unsigned int mss_off;
40 unsigned int cdclkcon_off;
41 unsigned int lrp_off;
42 unsigned int bfs_mask;
43 unsigned int rfs_mask;
44 unsigned int ftx0cnt_off;
45};
46
47struct samsung_i2s_dai_data {
48 u32 quirks;
49 unsigned int pcm_rates;
50 const struct samsung_i2s_variant_regs *i2s_variant_regs;
51 void (*fixup_early)(struct snd_pcm_substream *substream,
52 struct snd_soc_dai *dai);
53 void (*fixup_late)(struct snd_pcm_substream *substream,
54 struct snd_soc_dai *dai);
55};
56
57struct i2s_dai {
58
59 struct platform_device *pdev;
60
61
62 unsigned frmclk;
63
64
65
66
67 unsigned rfs, bfs;
68
69 struct i2s_dai *pri_dai;
70
71 struct i2s_dai *sec_dai;
72
73#define DAI_OPENED (1 << 0)
74#define DAI_MANAGER (1 << 1)
75 unsigned mode;
76
77
78 struct snd_soc_dai_driver *drv;
79
80
81 struct snd_dmaengine_dai_dma_data dma_playback;
82 struct snd_dmaengine_dai_dma_data dma_capture;
83 struct snd_dmaengine_dai_dma_data idma_playback;
84 dma_filter_fn filter;
85
86 struct samsung_i2s_priv *priv;
87};
88
89struct samsung_i2s_priv {
90 struct platform_device *pdev;
91 struct platform_device *pdev_sec;
92
93
94 spinlock_t pcm_lock;
95
96
97 struct i2s_dai *dai;
98 struct snd_soc_dai_driver *dai_drv;
99 int num_dais;
100
101
102 struct clk *clk;
103
104
105 struct clk *op_clk;
106
107
108 unsigned long rclk_srcrate;
109
110
111 u32 suspend_i2smod;
112 u32 suspend_i2scon;
113 u32 suspend_i2spsr;
114
115 const struct samsung_i2s_variant_regs *variant_regs;
116 void (*fixup_early)(struct snd_pcm_substream *substream,
117 struct snd_soc_dai *dai);
118 void (*fixup_late)(struct snd_pcm_substream *substream,
119 struct snd_soc_dai *dai);
120 u32 quirks;
121
122
123 struct clk *clk_table[3];
124 struct clk_onecell_data clk_data;
125
126
127 spinlock_t lock;
128
129
130 void __iomem *addr;
131
132
133 bool slave_mode;
134};
135
136
137static inline bool is_secondary(struct i2s_dai *i2s)
138{
139 return i2s->drv->id == SAMSUNG_I2S_ID_SECONDARY;
140}
141
142
143static inline bool tx_active(struct i2s_dai *i2s)
144{
145 u32 active;
146
147 if (!i2s)
148 return false;
149
150 active = readl(i2s->priv->addr + I2SCON);
151
152 if (is_secondary(i2s))
153 active &= CON_TXSDMA_ACTIVE;
154 else
155 active &= CON_TXDMA_ACTIVE;
156
157 return active ? true : false;
158}
159
160
161static inline struct i2s_dai *get_other_dai(struct i2s_dai *i2s)
162{
163 return i2s->pri_dai ? : i2s->sec_dai;
164}
165
166
167static inline bool other_tx_active(struct i2s_dai *i2s)
168{
169 struct i2s_dai *other = get_other_dai(i2s);
170
171 return tx_active(other);
172}
173
174
175static inline bool any_tx_active(struct i2s_dai *i2s)
176{
177 return tx_active(i2s) || other_tx_active(i2s);
178}
179
180
181static inline bool rx_active(struct i2s_dai *i2s)
182{
183 u32 active;
184
185 if (!i2s)
186 return false;
187
188 active = readl(i2s->priv->addr + I2SCON) & CON_RXDMA_ACTIVE;
189
190 return active ? true : false;
191}
192
193
194static inline bool other_rx_active(struct i2s_dai *i2s)
195{
196 struct i2s_dai *other = get_other_dai(i2s);
197
198 return rx_active(other);
199}
200
201
202static inline bool any_rx_active(struct i2s_dai *i2s)
203{
204 return rx_active(i2s) || other_rx_active(i2s);
205}
206
207
208static inline bool other_active(struct i2s_dai *i2s)
209{
210 return other_rx_active(i2s) || other_tx_active(i2s);
211}
212
213
214static inline bool this_active(struct i2s_dai *i2s)
215{
216 return tx_active(i2s) || rx_active(i2s);
217}
218
219
220static inline bool any_active(struct i2s_dai *i2s)
221{
222 return this_active(i2s) || other_active(i2s);
223}
224
225static inline struct i2s_dai *to_info(struct snd_soc_dai *dai)
226{
227 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
228
229 return &priv->dai[dai->id - 1];
230}
231
232static inline bool is_opened(struct i2s_dai *i2s)
233{
234 if (i2s && (i2s->mode & DAI_OPENED))
235 return true;
236 else
237 return false;
238}
239
240static inline bool is_manager(struct i2s_dai *i2s)
241{
242 if (is_opened(i2s) && (i2s->mode & DAI_MANAGER))
243 return true;
244 else
245 return false;
246}
247
248
249static inline unsigned get_rfs(struct i2s_dai *i2s)
250{
251 struct samsung_i2s_priv *priv = i2s->priv;
252 u32 rfs;
253
254 rfs = readl(priv->addr + I2SMOD) >> priv->variant_regs->rfs_off;
255 rfs &= priv->variant_regs->rfs_mask;
256
257 switch (rfs) {
258 case 7: return 192;
259 case 6: return 96;
260 case 5: return 128;
261 case 4: return 64;
262 case 3: return 768;
263 case 2: return 384;
264 case 1: return 512;
265 default: return 256;
266 }
267}
268
269
270static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
271{
272 struct samsung_i2s_priv *priv = i2s->priv;
273 u32 mod = readl(priv->addr + I2SMOD);
274 int rfs_shift = priv->variant_regs->rfs_off;
275
276 mod &= ~(priv->variant_regs->rfs_mask << rfs_shift);
277
278 switch (rfs) {
279 case 192:
280 mod |= (EXYNOS7_MOD_RCLK_192FS << rfs_shift);
281 break;
282 case 96:
283 mod |= (EXYNOS7_MOD_RCLK_96FS << rfs_shift);
284 break;
285 case 128:
286 mod |= (EXYNOS7_MOD_RCLK_128FS << rfs_shift);
287 break;
288 case 64:
289 mod |= (EXYNOS7_MOD_RCLK_64FS << rfs_shift);
290 break;
291 case 768:
292 mod |= (MOD_RCLK_768FS << rfs_shift);
293 break;
294 case 512:
295 mod |= (MOD_RCLK_512FS << rfs_shift);
296 break;
297 case 384:
298 mod |= (MOD_RCLK_384FS << rfs_shift);
299 break;
300 default:
301 mod |= (MOD_RCLK_256FS << rfs_shift);
302 break;
303 }
304
305 writel(mod, priv->addr + I2SMOD);
306}
307
308
309static inline unsigned get_bfs(struct i2s_dai *i2s)
310{
311 struct samsung_i2s_priv *priv = i2s->priv;
312 u32 bfs;
313
314 bfs = readl(priv->addr + I2SMOD) >> priv->variant_regs->bfs_off;
315 bfs &= priv->variant_regs->bfs_mask;
316
317 switch (bfs) {
318 case 8: return 256;
319 case 7: return 192;
320 case 6: return 128;
321 case 5: return 96;
322 case 4: return 64;
323 case 3: return 24;
324 case 2: return 16;
325 case 1: return 48;
326 default: return 32;
327 }
328}
329
330
331static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
332{
333 struct samsung_i2s_priv *priv = i2s->priv;
334 u32 mod = readl(priv->addr + I2SMOD);
335 int tdm = priv->quirks & QUIRK_SUPPORTS_TDM;
336 int bfs_shift = priv->variant_regs->bfs_off;
337
338
339 if (!tdm && bfs > 48) {
340 dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n");
341 return;
342 }
343
344 mod &= ~(priv->variant_regs->bfs_mask << bfs_shift);
345
346 switch (bfs) {
347 case 48:
348 mod |= (MOD_BCLK_48FS << bfs_shift);
349 break;
350 case 32:
351 mod |= (MOD_BCLK_32FS << bfs_shift);
352 break;
353 case 24:
354 mod |= (MOD_BCLK_24FS << bfs_shift);
355 break;
356 case 16:
357 mod |= (MOD_BCLK_16FS << bfs_shift);
358 break;
359 case 64:
360 mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift);
361 break;
362 case 96:
363 mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift);
364 break;
365 case 128:
366 mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift);
367 break;
368 case 192:
369 mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift);
370 break;
371 case 256:
372 mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift);
373 break;
374 default:
375 dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n");
376 return;
377 }
378
379 writel(mod, priv->addr + I2SMOD);
380}
381
382
383static inline int get_blc(struct i2s_dai *i2s)
384{
385 int blc = readl(i2s->priv->addr + I2SMOD);
386
387 blc = (blc >> 13) & 0x3;
388
389 switch (blc) {
390 case 2: return 24;
391 case 1: return 8;
392 default: return 16;
393 }
394}
395
396
397static void i2s_txctrl(struct i2s_dai *i2s, int on)
398{
399 struct samsung_i2s_priv *priv = i2s->priv;
400 void __iomem *addr = priv->addr;
401 int txr_off = priv->variant_regs->txr_off;
402 u32 con = readl(addr + I2SCON);
403 u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
404
405 if (on) {
406 con |= CON_ACTIVE;
407 con &= ~CON_TXCH_PAUSE;
408
409 if (is_secondary(i2s)) {
410 con |= CON_TXSDMA_ACTIVE;
411 con &= ~CON_TXSDMA_PAUSE;
412 } else {
413 con |= CON_TXDMA_ACTIVE;
414 con &= ~CON_TXDMA_PAUSE;
415 }
416
417 if (any_rx_active(i2s))
418 mod |= 2 << txr_off;
419 else
420 mod |= 0 << txr_off;
421 } else {
422 if (is_secondary(i2s)) {
423 con |= CON_TXSDMA_PAUSE;
424 con &= ~CON_TXSDMA_ACTIVE;
425 } else {
426 con |= CON_TXDMA_PAUSE;
427 con &= ~CON_TXDMA_ACTIVE;
428 }
429
430 if (other_tx_active(i2s)) {
431 writel(con, addr + I2SCON);
432 return;
433 }
434
435 con |= CON_TXCH_PAUSE;
436
437 if (any_rx_active(i2s))
438 mod |= 1 << txr_off;
439 else
440 con &= ~CON_ACTIVE;
441 }
442
443 writel(mod, addr + I2SMOD);
444 writel(con, addr + I2SCON);
445}
446
447
448static void i2s_rxctrl(struct i2s_dai *i2s, int on)
449{
450 struct samsung_i2s_priv *priv = i2s->priv;
451 void __iomem *addr = priv->addr;
452 int txr_off = priv->variant_regs->txr_off;
453 u32 con = readl(addr + I2SCON);
454 u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
455
456 if (on) {
457 con |= CON_RXDMA_ACTIVE | CON_ACTIVE;
458 con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE);
459
460 if (any_tx_active(i2s))
461 mod |= 2 << txr_off;
462 else
463 mod |= 1 << txr_off;
464 } else {
465 con |= CON_RXDMA_PAUSE | CON_RXCH_PAUSE;
466 con &= ~CON_RXDMA_ACTIVE;
467
468 if (any_tx_active(i2s))
469 mod |= 0 << txr_off;
470 else
471 con &= ~CON_ACTIVE;
472 }
473
474 writel(mod, addr + I2SMOD);
475 writel(con, addr + I2SCON);
476}
477
478
479static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush)
480{
481 void __iomem *fic;
482 u32 val;
483
484 if (!i2s)
485 return;
486
487 if (is_secondary(i2s))
488 fic = i2s->priv->addr + I2SFICS;
489 else
490 fic = i2s->priv->addr + I2SFIC;
491
492
493 writel(readl(fic) | flush, fic);
494
495
496 val = msecs_to_loops(1) / 1000;
497 while (--val)
498 cpu_relax();
499
500 writel(readl(fic) & ~flush, fic);
501}
502
503static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
504 int dir)
505{
506 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
507 struct i2s_dai *i2s = to_info(dai);
508 struct i2s_dai *other = get_other_dai(i2s);
509 const struct samsung_i2s_variant_regs *i2s_regs = priv->variant_regs;
510 unsigned int cdcon_mask = 1 << i2s_regs->cdclkcon_off;
511 unsigned int rsrc_mask = 1 << i2s_regs->rclksrc_off;
512 u32 mod, mask, val = 0;
513 unsigned long flags;
514 int ret = 0;
515
516 pm_runtime_get_sync(dai->dev);
517
518 spin_lock_irqsave(&priv->lock, flags);
519 mod = readl(priv->addr + I2SMOD);
520 spin_unlock_irqrestore(&priv->lock, flags);
521
522 switch (clk_id) {
523 case SAMSUNG_I2S_OPCLK:
524 mask = MOD_OPCLK_MASK;
525 val = (dir << MOD_OPCLK_SHIFT) & MOD_OPCLK_MASK;
526 break;
527 case SAMSUNG_I2S_CDCLK:
528 mask = 1 << i2s_regs->cdclkcon_off;
529
530 if (dir == SND_SOC_CLOCK_IN)
531 rfs = 0;
532
533 if ((rfs && other && other->rfs && (other->rfs != rfs)) ||
534 (any_active(i2s) &&
535 (((dir == SND_SOC_CLOCK_IN)
536 && !(mod & cdcon_mask)) ||
537 ((dir == SND_SOC_CLOCK_OUT)
538 && (mod & cdcon_mask))))) {
539 dev_err(&i2s->pdev->dev,
540 "%s:%d Other DAI busy\n", __func__, __LINE__);
541 ret = -EAGAIN;
542 goto err;
543 }
544
545 if (dir == SND_SOC_CLOCK_IN)
546 val = 1 << i2s_regs->cdclkcon_off;
547
548 i2s->rfs = rfs;
549 break;
550
551 case SAMSUNG_I2S_RCLKSRC_0:
552 case SAMSUNG_I2S_RCLKSRC_1:
553 mask = 1 << i2s_regs->rclksrc_off;
554
555 if ((priv->quirks & QUIRK_NO_MUXPSR)
556 || (clk_id == SAMSUNG_I2S_RCLKSRC_0))
557 clk_id = 0;
558 else
559 clk_id = 1;
560
561 if (!any_active(i2s)) {
562 if (priv->op_clk && !IS_ERR(priv->op_clk)) {
563 if ((clk_id && !(mod & rsrc_mask)) ||
564 (!clk_id && (mod & rsrc_mask))) {
565 clk_disable_unprepare(priv->op_clk);
566 clk_put(priv->op_clk);
567 } else {
568 priv->rclk_srcrate =
569 clk_get_rate(priv->op_clk);
570 goto done;
571 }
572 }
573
574 if (clk_id)
575 priv->op_clk = clk_get(&i2s->pdev->dev,
576 "i2s_opclk1");
577 else
578 priv->op_clk = clk_get(&i2s->pdev->dev,
579 "i2s_opclk0");
580
581 if (WARN_ON(IS_ERR(priv->op_clk))) {
582 ret = PTR_ERR(priv->op_clk);
583 priv->op_clk = NULL;
584 goto err;
585 }
586
587 ret = clk_prepare_enable(priv->op_clk);
588 if (ret) {
589 clk_put(priv->op_clk);
590 priv->op_clk = NULL;
591 goto err;
592 }
593 priv->rclk_srcrate = clk_get_rate(priv->op_clk);
594
595 } else if ((!clk_id && (mod & rsrc_mask))
596 || (clk_id && !(mod & rsrc_mask))) {
597 dev_err(&i2s->pdev->dev,
598 "%s:%d Other DAI busy\n", __func__, __LINE__);
599 ret = -EAGAIN;
600 goto err;
601 } else {
602
603 goto done;
604 }
605
606 if (clk_id == 1)
607 val = 1 << i2s_regs->rclksrc_off;
608 break;
609 default:
610 dev_err(&i2s->pdev->dev, "We don't serve that!\n");
611 ret = -EINVAL;
612 goto err;
613 }
614
615 spin_lock_irqsave(&priv->lock, flags);
616 mod = readl(priv->addr + I2SMOD);
617 mod = (mod & ~mask) | val;
618 writel(mod, priv->addr + I2SMOD);
619 spin_unlock_irqrestore(&priv->lock, flags);
620done:
621 pm_runtime_put(dai->dev);
622
623 return 0;
624err:
625 pm_runtime_put(dai->dev);
626 return ret;
627}
628
629static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
630{
631 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
632 struct i2s_dai *i2s = to_info(dai);
633 int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave;
634 u32 mod, tmp = 0;
635 unsigned long flags;
636
637 lrp_shift = priv->variant_regs->lrp_off;
638 sdf_shift = priv->variant_regs->sdf_off;
639 mod_slave = 1 << priv->variant_regs->mss_off;
640
641 sdf_mask = MOD_SDF_MASK << sdf_shift;
642 lrp_rlow = MOD_LR_RLOW << lrp_shift;
643
644
645 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
646 case SND_SOC_DAIFMT_RIGHT_J:
647 tmp |= lrp_rlow;
648 tmp |= (MOD_SDF_MSB << sdf_shift);
649 break;
650 case SND_SOC_DAIFMT_LEFT_J:
651 tmp |= lrp_rlow;
652 tmp |= (MOD_SDF_LSB << sdf_shift);
653 break;
654 case SND_SOC_DAIFMT_I2S:
655 tmp |= (MOD_SDF_IIS << sdf_shift);
656 break;
657 default:
658 dev_err(&i2s->pdev->dev, "Format not supported\n");
659 return -EINVAL;
660 }
661
662
663
664
665
666 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
667 case SND_SOC_DAIFMT_NB_NF:
668 break;
669 case SND_SOC_DAIFMT_NB_IF:
670 if (tmp & lrp_rlow)
671 tmp &= ~lrp_rlow;
672 else
673 tmp |= lrp_rlow;
674 break;
675 default:
676 dev_err(&i2s->pdev->dev, "Polarity not supported\n");
677 return -EINVAL;
678 }
679
680 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
681 case SND_SOC_DAIFMT_BC_FC:
682 tmp |= mod_slave;
683 break;
684 case SND_SOC_DAIFMT_BP_FP:
685
686
687
688
689
690 if (priv->rclk_srcrate == 0 && priv->clk_data.clks == NULL)
691 i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0,
692 0, SND_SOC_CLOCK_IN);
693 break;
694 default:
695 dev_err(&i2s->pdev->dev, "master/slave format not supported\n");
696 return -EINVAL;
697 }
698
699 pm_runtime_get_sync(dai->dev);
700 spin_lock_irqsave(&priv->lock, flags);
701 mod = readl(priv->addr + I2SMOD);
702
703
704
705
706 if (any_active(i2s) &&
707 ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) {
708 spin_unlock_irqrestore(&priv->lock, flags);
709 pm_runtime_put(dai->dev);
710 dev_err(&i2s->pdev->dev,
711 "%s:%d Other DAI busy\n", __func__, __LINE__);
712 return -EAGAIN;
713 }
714
715 mod &= ~(sdf_mask | lrp_rlow | mod_slave);
716 mod |= tmp;
717 writel(mod, priv->addr + I2SMOD);
718 priv->slave_mode = (mod & mod_slave);
719 spin_unlock_irqrestore(&priv->lock, flags);
720 pm_runtime_put(dai->dev);
721
722 return 0;
723}
724
725static int i2s_hw_params(struct snd_pcm_substream *substream,
726 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
727{
728 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
729 struct i2s_dai *i2s = to_info(dai);
730 u32 mod, mask = 0, val = 0;
731 struct clk *rclksrc;
732 unsigned long flags;
733
734 WARN_ON(!pm_runtime_active(dai->dev));
735
736 if (!is_secondary(i2s))
737 mask |= (MOD_DC2_EN | MOD_DC1_EN);
738
739 switch (params_channels(params)) {
740 case 6:
741 val |= MOD_DC2_EN;
742 fallthrough;
743 case 4:
744 val |= MOD_DC1_EN;
745 break;
746 case 2:
747 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
748 i2s->dma_playback.addr_width = 4;
749 else
750 i2s->dma_capture.addr_width = 4;
751 break;
752 case 1:
753 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
754 i2s->dma_playback.addr_width = 2;
755 else
756 i2s->dma_capture.addr_width = 2;
757
758 break;
759 default:
760 dev_err(&i2s->pdev->dev, "%d channels not supported\n",
761 params_channels(params));
762 return -EINVAL;
763 }
764
765 if (is_secondary(i2s))
766 mask |= MOD_BLCS_MASK;
767 else
768 mask |= MOD_BLCP_MASK;
769
770 if (is_manager(i2s))
771 mask |= MOD_BLC_MASK;
772
773 switch (params_width(params)) {
774 case 8:
775 if (is_secondary(i2s))
776 val |= MOD_BLCS_8BIT;
777 else
778 val |= MOD_BLCP_8BIT;
779 if (is_manager(i2s))
780 val |= MOD_BLC_8BIT;
781 break;
782 case 16:
783 if (is_secondary(i2s))
784 val |= MOD_BLCS_16BIT;
785 else
786 val |= MOD_BLCP_16BIT;
787 if (is_manager(i2s))
788 val |= MOD_BLC_16BIT;
789 break;
790 case 24:
791 if (is_secondary(i2s))
792 val |= MOD_BLCS_24BIT;
793 else
794 val |= MOD_BLCP_24BIT;
795 if (is_manager(i2s))
796 val |= MOD_BLC_24BIT;
797 break;
798 default:
799 dev_err(&i2s->pdev->dev, "Format(%d) not supported\n",
800 params_format(params));
801 return -EINVAL;
802 }
803
804 spin_lock_irqsave(&priv->lock, flags);
805 mod = readl(priv->addr + I2SMOD);
806 mod = (mod & ~mask) | val;
807 writel(mod, priv->addr + I2SMOD);
808 spin_unlock_irqrestore(&priv->lock, flags);
809
810 snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
811
812 i2s->frmclk = params_rate(params);
813
814 rclksrc = priv->clk_table[CLK_I2S_RCLK_SRC];
815 if (rclksrc && !IS_ERR(rclksrc))
816 priv->rclk_srcrate = clk_get_rate(rclksrc);
817
818 return 0;
819}
820
821
822static int i2s_startup(struct snd_pcm_substream *substream,
823 struct snd_soc_dai *dai)
824{
825 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
826 struct i2s_dai *i2s = to_info(dai);
827 struct i2s_dai *other = get_other_dai(i2s);
828 unsigned long flags;
829
830 pm_runtime_get_sync(dai->dev);
831
832 spin_lock_irqsave(&priv->pcm_lock, flags);
833
834 i2s->mode |= DAI_OPENED;
835
836 if (is_manager(other))
837 i2s->mode &= ~DAI_MANAGER;
838 else
839 i2s->mode |= DAI_MANAGER;
840
841 if (!any_active(i2s) && (priv->quirks & QUIRK_NEED_RSTCLR))
842 writel(CON_RSTCLR, i2s->priv->addr + I2SCON);
843
844 spin_unlock_irqrestore(&priv->pcm_lock, flags);
845
846 return 0;
847}
848
849static void i2s_shutdown(struct snd_pcm_substream *substream,
850 struct snd_soc_dai *dai)
851{
852 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
853 struct i2s_dai *i2s = to_info(dai);
854 struct i2s_dai *other = get_other_dai(i2s);
855 unsigned long flags;
856
857 spin_lock_irqsave(&priv->pcm_lock, flags);
858
859 i2s->mode &= ~DAI_OPENED;
860 i2s->mode &= ~DAI_MANAGER;
861
862 if (is_opened(other))
863 other->mode |= DAI_MANAGER;
864
865
866 i2s->rfs = 0;
867 i2s->bfs = 0;
868
869 spin_unlock_irqrestore(&priv->pcm_lock, flags);
870
871 pm_runtime_put(dai->dev);
872}
873
874static int config_setup(struct i2s_dai *i2s)
875{
876 struct samsung_i2s_priv *priv = i2s->priv;
877 struct i2s_dai *other = get_other_dai(i2s);
878 unsigned rfs, bfs, blc;
879 u32 psr;
880
881 blc = get_blc(i2s);
882
883 bfs = i2s->bfs;
884
885 if (!bfs && other)
886 bfs = other->bfs;
887
888
889 if (!bfs)
890 bfs = blc * 2;
891
892 rfs = i2s->rfs;
893
894 if (!rfs && other)
895 rfs = other->rfs;
896
897 if ((rfs == 256 || rfs == 512) && (blc == 24)) {
898 dev_err(&i2s->pdev->dev,
899 "%d-RFS not supported for 24-blc\n", rfs);
900 return -EINVAL;
901 }
902
903 if (!rfs) {
904 if (bfs == 16 || bfs == 32)
905 rfs = 256;
906 else
907 rfs = 384;
908 }
909
910
911 if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) {
912 dev_err(&i2s->pdev->dev,
913 "%s:%d Other DAI busy\n", __func__, __LINE__);
914 return -EAGAIN;
915 }
916
917 set_bfs(i2s, bfs);
918 set_rfs(i2s, rfs);
919
920
921 if (priv->slave_mode)
922 return 0;
923
924 if (!(priv->quirks & QUIRK_NO_MUXPSR)) {
925 psr = priv->rclk_srcrate / i2s->frmclk / rfs;
926 writel(((psr - 1) << 8) | PSR_PSREN, priv->addr + I2SPSR);
927 dev_dbg(&i2s->pdev->dev,
928 "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n",
929 priv->rclk_srcrate, psr, rfs, bfs);
930 }
931
932 return 0;
933}
934
935static int i2s_trigger(struct snd_pcm_substream *substream,
936 int cmd, struct snd_soc_dai *dai)
937{
938 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
939 int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
940 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
941 struct i2s_dai *i2s = to_info(snd_soc_rtd_to_cpu(rtd, 0));
942 unsigned long flags;
943
944 switch (cmd) {
945 case SNDRV_PCM_TRIGGER_START:
946 case SNDRV_PCM_TRIGGER_RESUME:
947 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
948 pm_runtime_get_sync(dai->dev);
949
950 if (priv->fixup_early)
951 priv->fixup_early(substream, dai);
952
953 spin_lock_irqsave(&priv->lock, flags);
954
955 if (config_setup(i2s)) {
956 spin_unlock_irqrestore(&priv->lock, flags);
957 return -EINVAL;
958 }
959
960 if (priv->fixup_late)
961 priv->fixup_late(substream, dai);
962
963 if (capture)
964 i2s_rxctrl(i2s, 1);
965 else
966 i2s_txctrl(i2s, 1);
967
968 spin_unlock_irqrestore(&priv->lock, flags);
969 break;
970 case SNDRV_PCM_TRIGGER_STOP:
971 case SNDRV_PCM_TRIGGER_SUSPEND:
972 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
973 spin_lock_irqsave(&priv->lock, flags);
974
975 if (capture) {
976 i2s_rxctrl(i2s, 0);
977 i2s_fifo(i2s, FIC_RXFLUSH);
978 } else {
979 i2s_txctrl(i2s, 0);
980 i2s_fifo(i2s, FIC_TXFLUSH);
981 }
982
983 spin_unlock_irqrestore(&priv->lock, flags);
984 pm_runtime_put(dai->dev);
985 break;
986 }
987
988 return 0;
989}
990
991static int i2s_set_clkdiv(struct snd_soc_dai *dai,
992 int div_id, int div)
993{
994 struct i2s_dai *i2s = to_info(dai);
995 struct i2s_dai *other = get_other_dai(i2s);
996
997 switch (div_id) {
998 case SAMSUNG_I2S_DIV_BCLK:
999 pm_runtime_get_sync(dai->dev);
1000 if ((any_active(i2s) && div && (get_bfs(i2s) != div))
1001 || (other && other->bfs && (other->bfs != div))) {
1002 pm_runtime_put(dai->dev);
1003 dev_err(&i2s->pdev->dev,
1004 "%s:%d Other DAI busy\n", __func__, __LINE__);
1005 return -EAGAIN;
1006 }
1007 i2s->bfs = div;
1008 pm_runtime_put(dai->dev);
1009 break;
1010 default:
1011 dev_err(&i2s->pdev->dev,
1012 "Invalid clock divider(%d)\n", div_id);
1013 return -EINVAL;
1014 }
1015
1016 return 0;
1017}
1018
1019static snd_pcm_sframes_t
1020i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
1021{
1022 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
1023 struct i2s_dai *i2s = to_info(dai);
1024 u32 reg = readl(priv->addr + I2SFIC);
1025 snd_pcm_sframes_t delay;
1026
1027 WARN_ON(!pm_runtime_active(dai->dev));
1028
1029 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
1030 delay = FIC_RXCOUNT(reg);
1031 else if (is_secondary(i2s))
1032 delay = FICS_TXCOUNT(readl(priv->addr + I2SFICS));
1033 else
1034 delay = (reg >> priv->variant_regs->ftx0cnt_off) & 0x7f;
1035
1036 return delay;
1037}
1038
1039#ifdef CONFIG_PM
1040static int i2s_suspend(struct snd_soc_component *component)
1041{
1042 return pm_runtime_force_suspend(component->dev);
1043}
1044
1045static int i2s_resume(struct snd_soc_component *component)
1046{
1047 return pm_runtime_force_resume(component->dev);
1048}
1049#else
1050#define i2s_suspend NULL
1051#define i2s_resume NULL
1052#endif
1053
1054static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
1055{
1056 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
1057 struct i2s_dai *i2s = to_info(dai);
1058 struct i2s_dai *other = get_other_dai(i2s);
1059 unsigned long flags;
1060
1061 pm_runtime_get_sync(dai->dev);
1062
1063 if (is_secondary(i2s)) {
1064
1065 snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, NULL);
1066 } else {
1067 snd_soc_dai_init_dma_data(dai, &i2s->dma_playback,
1068 &i2s->dma_capture);
1069
1070 if (priv->quirks & QUIRK_NEED_RSTCLR)
1071 writel(CON_RSTCLR, priv->addr + I2SCON);
1072
1073 if (priv->quirks & QUIRK_SUPPORTS_IDMA)
1074 idma_reg_addr_init(priv->addr,
1075 other->idma_playback.addr);
1076 }
1077
1078
1079 i2s->rfs = 0;
1080 i2s->bfs = 0;
1081
1082 spin_lock_irqsave(&priv->lock, flags);
1083 i2s_txctrl(i2s, 0);
1084 i2s_rxctrl(i2s, 0);
1085 i2s_fifo(i2s, FIC_TXFLUSH);
1086 i2s_fifo(other, FIC_TXFLUSH);
1087 i2s_fifo(i2s, FIC_RXFLUSH);
1088 spin_unlock_irqrestore(&priv->lock, flags);
1089
1090
1091 if (!is_opened(other))
1092 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK,
1093 0, SND_SOC_CLOCK_IN);
1094 pm_runtime_put(dai->dev);
1095
1096 return 0;
1097}
1098
1099static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
1100{
1101 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
1102 struct i2s_dai *i2s = to_info(dai);
1103 unsigned long flags;
1104
1105 pm_runtime_get_sync(dai->dev);
1106
1107 if (!is_secondary(i2s)) {
1108 if (priv->quirks & QUIRK_NEED_RSTCLR) {
1109 spin_lock_irqsave(&priv->lock, flags);
1110 writel(0, priv->addr + I2SCON);
1111 spin_unlock_irqrestore(&priv->lock, flags);
1112 }
1113 }
1114
1115 pm_runtime_put(dai->dev);
1116
1117 return 0;
1118}
1119
1120static const struct snd_soc_dai_ops samsung_i2s_dai_ops = {
1121 .probe = samsung_i2s_dai_probe,
1122 .remove = samsung_i2s_dai_remove,
1123 .trigger = i2s_trigger,
1124 .hw_params = i2s_hw_params,
1125 .set_fmt = i2s_set_fmt,
1126 .set_clkdiv = i2s_set_clkdiv,
1127 .set_sysclk = i2s_set_sysclk,
1128 .startup = i2s_startup,
1129 .shutdown = i2s_shutdown,
1130 .delay = i2s_delay,
1131};
1132
1133static const struct snd_soc_dapm_widget samsung_i2s_widgets[] = {
1134
1135 SND_SOC_DAPM_AIF_OUT("Mixer DAI TX", NULL, 0, SND_SOC_NOPM, 0, 0),
1136 SND_SOC_DAPM_AIF_IN("Mixer DAI RX", NULL, 0, SND_SOC_NOPM, 0, 0),
1137
1138
1139 SND_SOC_DAPM_MIXER("Playback Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
1140};
1141
1142static const struct snd_soc_dapm_route samsung_i2s_dapm_routes[] = {
1143 { "Playback Mixer", NULL, "Primary Playback" },
1144 { "Playback Mixer", NULL, "Secondary Playback" },
1145
1146 { "Mixer DAI TX", NULL, "Playback Mixer" },
1147 { "Primary Capture", NULL, "Mixer DAI RX" },
1148};
1149
1150static const struct snd_soc_component_driver samsung_i2s_component = {
1151 .name = "samsung-i2s",
1152
1153 .dapm_widgets = samsung_i2s_widgets,
1154 .num_dapm_widgets = ARRAY_SIZE(samsung_i2s_widgets),
1155
1156 .dapm_routes = samsung_i2s_dapm_routes,
1157 .num_dapm_routes = ARRAY_SIZE(samsung_i2s_dapm_routes),
1158
1159 .suspend = i2s_suspend,
1160 .resume = i2s_resume,
1161
1162 .legacy_dai_naming = 1,
1163};
1164
1165#define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \
1166 SNDRV_PCM_FMTBIT_S24_LE)
1167
1168static int i2s_alloc_dais(struct samsung_i2s_priv *priv,
1169 const struct samsung_i2s_dai_data *i2s_dai_data,
1170 int num_dais)
1171{
1172 static const char *dai_names[] = { "samsung-i2s", "samsung-i2s-sec" };
1173 static const char *stream_names[] = { "Primary Playback",
1174 "Secondary Playback" };
1175 struct snd_soc_dai_driver *dai_drv;
1176 int i;
1177
1178 priv->dai = devm_kcalloc(&priv->pdev->dev, num_dais,
1179 sizeof(struct i2s_dai), GFP_KERNEL);
1180 if (!priv->dai)
1181 return -ENOMEM;
1182
1183 priv->dai_drv = devm_kcalloc(&priv->pdev->dev, num_dais,
1184 sizeof(*dai_drv), GFP_KERNEL);
1185 if (!priv->dai_drv)
1186 return -ENOMEM;
1187
1188 for (i = 0; i < num_dais; i++) {
1189 dai_drv = &priv->dai_drv[i];
1190
1191 dai_drv->symmetric_rate = 1;
1192 dai_drv->ops = &samsung_i2s_dai_ops;
1193
1194 dai_drv->playback.channels_min = 1;
1195 dai_drv->playback.channels_max = 2;
1196 dai_drv->playback.rates = i2s_dai_data->pcm_rates;
1197 dai_drv->playback.formats = SAMSUNG_I2S_FMTS;
1198 dai_drv->playback.stream_name = stream_names[i];
1199
1200 dai_drv->id = i + 1;
1201 dai_drv->name = dai_names[i];
1202
1203 priv->dai[i].drv = &priv->dai_drv[i];
1204 priv->dai[i].pdev = priv->pdev;
1205 }
1206
1207
1208 dai_drv = &priv->dai_drv[SAMSUNG_I2S_ID_PRIMARY - 1];
1209
1210 dai_drv->capture.channels_min = 1;
1211 dai_drv->capture.channels_max = 2;
1212 dai_drv->capture.rates = i2s_dai_data->pcm_rates;
1213 dai_drv->capture.formats = SAMSUNG_I2S_FMTS;
1214 dai_drv->capture.stream_name = "Primary Capture";
1215
1216 return 0;
1217}
1218
1219static int i2s_runtime_suspend(struct device *dev)
1220{
1221 struct samsung_i2s_priv *priv = dev_get_drvdata(dev);
1222
1223 priv->suspend_i2smod = readl(priv->addr + I2SMOD);
1224 priv->suspend_i2scon = readl(priv->addr + I2SCON);
1225 priv->suspend_i2spsr = readl(priv->addr + I2SPSR);
1226
1227 clk_disable_unprepare(priv->op_clk);
1228 clk_disable_unprepare(priv->clk);
1229
1230 return 0;
1231}
1232
1233static int i2s_runtime_resume(struct device *dev)
1234{
1235 struct samsung_i2s_priv *priv = dev_get_drvdata(dev);
1236 int ret;
1237
1238 ret = clk_prepare_enable(priv->clk);
1239 if (ret)
1240 return ret;
1241
1242 if (priv->op_clk) {
1243 ret = clk_prepare_enable(priv->op_clk);
1244 if (ret) {
1245 clk_disable_unprepare(priv->clk);
1246 return ret;
1247 }
1248 }
1249
1250 writel(priv->suspend_i2scon, priv->addr + I2SCON);
1251 writel(priv->suspend_i2smod, priv->addr + I2SMOD);
1252 writel(priv->suspend_i2spsr, priv->addr + I2SPSR);
1253
1254 return 0;
1255}
1256
1257static void i2s_unregister_clocks(struct samsung_i2s_priv *priv)
1258{
1259 int i;
1260
1261 for (i = 0; i < priv->clk_data.clk_num; i++) {
1262 if (!IS_ERR(priv->clk_table[i]))
1263 clk_unregister(priv->clk_table[i]);
1264 }
1265}
1266
1267static void i2s_unregister_clock_provider(struct samsung_i2s_priv *priv)
1268{
1269 of_clk_del_provider(priv->pdev->dev.of_node);
1270 i2s_unregister_clocks(priv);
1271}
1272
1273
1274static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
1275{
1276
1277 const char * const i2s_clk_desc[] = { "cdclk", "rclk_src", "prescaler" };
1278 const char *clk_name[2] = { "i2s_opclk0", "i2s_opclk1" };
1279 const char *p_names[2] = { NULL };
1280 struct device *dev = &priv->pdev->dev;
1281 const struct samsung_i2s_variant_regs *reg_info = priv->variant_regs;
1282 const char *i2s_clk_name[ARRAY_SIZE(i2s_clk_desc)];
1283 struct clk *rclksrc;
1284 int ret, i;
1285
1286
1287 if (!of_property_present(dev->of_node, "#clock-cells"))
1288 return 0;
1289
1290
1291 for (i = 0; i < ARRAY_SIZE(p_names); i++) {
1292 rclksrc = clk_get(dev, clk_name[i]);
1293 if (IS_ERR(rclksrc))
1294 continue;
1295 p_names[i] = __clk_get_name(rclksrc);
1296 clk_put(rclksrc);
1297 }
1298
1299 for (i = 0; i < ARRAY_SIZE(i2s_clk_desc); i++) {
1300 i2s_clk_name[i] = devm_kasprintf(dev, GFP_KERNEL, "%s_%s",
1301 dev_name(dev), i2s_clk_desc[i]);
1302 if (!i2s_clk_name[i])
1303 return -ENOMEM;
1304 }
1305
1306 if (!(priv->quirks & QUIRK_NO_MUXPSR)) {
1307
1308 u32 val = readl(priv->addr + I2SPSR);
1309 writel(val | PSR_PSREN, priv->addr + I2SPSR);
1310
1311 priv->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(dev,
1312 i2s_clk_name[CLK_I2S_RCLK_SRC], p_names,
1313 ARRAY_SIZE(p_names),
1314 CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT,
1315 priv->addr + I2SMOD, reg_info->rclksrc_off,
1316 1, 0, &priv->lock);
1317
1318 priv->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(dev,
1319 i2s_clk_name[CLK_I2S_RCLK_PSR],
1320 i2s_clk_name[CLK_I2S_RCLK_SRC],
1321 CLK_SET_RATE_PARENT,
1322 priv->addr + I2SPSR, 8, 6, 0, &priv->lock);
1323
1324 p_names[0] = i2s_clk_name[CLK_I2S_RCLK_PSR];
1325 priv->clk_data.clk_num = 2;
1326 }
1327
1328 priv->clk_table[CLK_I2S_CDCLK] = clk_register_gate(dev,
1329 i2s_clk_name[CLK_I2S_CDCLK], p_names[0],
1330 CLK_SET_RATE_PARENT,
1331 priv->addr + I2SMOD, reg_info->cdclkcon_off,
1332 CLK_GATE_SET_TO_DISABLE, &priv->lock);
1333
1334 priv->clk_data.clk_num += 1;
1335 priv->clk_data.clks = priv->clk_table;
1336
1337 ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
1338 &priv->clk_data);
1339 if (ret < 0) {
1340 dev_err(dev, "failed to add clock provider: %d\n", ret);
1341 i2s_unregister_clocks(priv);
1342 }
1343
1344 return ret;
1345}
1346
1347
1348static int i2s_create_secondary_device(struct samsung_i2s_priv *priv)
1349{
1350 struct platform_device *pdev_sec;
1351 const char *devname;
1352 int ret;
1353
1354 devname = devm_kasprintf(&priv->pdev->dev, GFP_KERNEL, "%s-sec",
1355 dev_name(&priv->pdev->dev));
1356 if (!devname)
1357 return -ENOMEM;
1358
1359 pdev_sec = platform_device_alloc(devname, -1);
1360 if (!pdev_sec)
1361 return -ENOMEM;
1362
1363 pdev_sec->driver_override = kstrdup("samsung-i2s", GFP_KERNEL);
1364 if (!pdev_sec->driver_override) {
1365 platform_device_put(pdev_sec);
1366 return -ENOMEM;
1367 }
1368
1369 ret = platform_device_add(pdev_sec);
1370 if (ret < 0) {
1371 platform_device_put(pdev_sec);
1372 return ret;
1373 }
1374
1375 ret = device_attach(&pdev_sec->dev);
1376 if (ret <= 0) {
1377 platform_device_unregister(priv->pdev_sec);
1378 dev_info(&pdev_sec->dev, "device_attach() failed\n");
1379 return ret;
1380 }
1381
1382 priv->pdev_sec = pdev_sec;
1383
1384 return 0;
1385}
1386
1387static void i2s_delete_secondary_device(struct samsung_i2s_priv *priv)
1388{
1389 platform_device_unregister(priv->pdev_sec);
1390 priv->pdev_sec = NULL;
1391}
1392
1393static int samsung_i2s_probe(struct platform_device *pdev)
1394{
1395 struct i2s_dai *pri_dai, *sec_dai = NULL;
1396 struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data;
1397 u32 regs_base, idma_addr = 0;
1398 struct device_node *np = pdev->dev.of_node;
1399 const struct samsung_i2s_dai_data *i2s_dai_data;
1400 const struct platform_device_id *id;
1401 struct samsung_i2s_priv *priv;
1402 struct resource *res;
1403 int num_dais, ret;
1404
1405 if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) {
1406 i2s_dai_data = of_device_get_match_data(&pdev->dev);
1407 } else {
1408 id = platform_get_device_id(pdev);
1409
1410
1411 if (!id)
1412 return 0;
1413
1414 i2s_dai_data = (struct samsung_i2s_dai_data *)id->driver_data;
1415 }
1416
1417 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1418 if (!priv)
1419 return -ENOMEM;
1420
1421 if (np) {
1422 priv->quirks = i2s_dai_data->quirks;
1423 priv->fixup_early = i2s_dai_data->fixup_early;
1424 priv->fixup_late = i2s_dai_data->fixup_late;
1425 } else {
1426 if (!i2s_pdata) {
1427 dev_err(&pdev->dev, "Missing platform data\n");
1428 return -EINVAL;
1429 }
1430 priv->quirks = i2s_pdata->type.quirks;
1431 }
1432
1433 num_dais = (priv->quirks & QUIRK_SEC_DAI) ? 2 : 1;
1434 priv->pdev = pdev;
1435 priv->variant_regs = i2s_dai_data->i2s_variant_regs;
1436
1437 ret = i2s_alloc_dais(priv, i2s_dai_data, num_dais);
1438 if (ret < 0)
1439 return ret;
1440
1441 pri_dai = &priv->dai[SAMSUNG_I2S_ID_PRIMARY - 1];
1442
1443 spin_lock_init(&priv->lock);
1444 spin_lock_init(&priv->pcm_lock);
1445
1446 if (!np) {
1447 pri_dai->dma_playback.filter_data = i2s_pdata->dma_playback;
1448 pri_dai->dma_capture.filter_data = i2s_pdata->dma_capture;
1449 pri_dai->filter = i2s_pdata->dma_filter;
1450
1451 idma_addr = i2s_pdata->type.idma_addr;
1452 } else {
1453 if (of_property_read_u32(np, "samsung,idma-addr",
1454 &idma_addr)) {
1455 if (priv->quirks & QUIRK_SUPPORTS_IDMA) {
1456 dev_info(&pdev->dev, "idma address is not"\
1457 "specified");
1458 }
1459 }
1460 }
1461
1462 priv->addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
1463 if (IS_ERR(priv->addr))
1464 return PTR_ERR(priv->addr);
1465
1466 regs_base = res->start;
1467
1468 priv->clk = devm_clk_get(&pdev->dev, "iis");
1469 if (IS_ERR(priv->clk)) {
1470 dev_err(&pdev->dev, "Failed to get iis clock\n");
1471 return PTR_ERR(priv->clk);
1472 }
1473
1474 ret = clk_prepare_enable(priv->clk);
1475 if (ret != 0) {
1476 dev_err(&pdev->dev, "failed to enable clock: %d\n", ret);
1477 return ret;
1478 }
1479 pri_dai->dma_playback.addr = regs_base + I2STXD;
1480 pri_dai->dma_capture.addr = regs_base + I2SRXD;
1481 pri_dai->dma_playback.chan_name = "tx";
1482 pri_dai->dma_capture.chan_name = "rx";
1483 pri_dai->dma_playback.addr_width = 4;
1484 pri_dai->dma_capture.addr_width = 4;
1485 pri_dai->priv = priv;
1486
1487 if (priv->quirks & QUIRK_PRI_6CHAN)
1488 pri_dai->drv->playback.channels_max = 6;
1489
1490 ret = samsung_asoc_dma_platform_register(&pdev->dev, pri_dai->filter,
1491 "tx", "rx", NULL);
1492 if (ret < 0)
1493 goto err_disable_clk;
1494
1495 if (priv->quirks & QUIRK_SEC_DAI) {
1496 sec_dai = &priv->dai[SAMSUNG_I2S_ID_SECONDARY - 1];
1497
1498 sec_dai->dma_playback.addr = regs_base + I2STXDS;
1499 sec_dai->dma_playback.chan_name = "tx-sec";
1500
1501 if (!np) {
1502 sec_dai->dma_playback.filter_data = i2s_pdata->dma_play_sec;
1503 sec_dai->filter = i2s_pdata->dma_filter;
1504 }
1505
1506 sec_dai->dma_playback.addr_width = 4;
1507 sec_dai->idma_playback.addr = idma_addr;
1508 sec_dai->pri_dai = pri_dai;
1509 sec_dai->priv = priv;
1510 pri_dai->sec_dai = sec_dai;
1511
1512 ret = i2s_create_secondary_device(priv);
1513 if (ret < 0)
1514 goto err_disable_clk;
1515
1516 ret = samsung_asoc_dma_platform_register(&priv->pdev_sec->dev,
1517 sec_dai->filter, "tx-sec", NULL,
1518 &pdev->dev);
1519 if (ret < 0)
1520 goto err_del_sec;
1521
1522 }
1523
1524 if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
1525 dev_err(&pdev->dev, "Unable to configure gpio\n");
1526 ret = -EINVAL;
1527 goto err_del_sec;
1528 }
1529
1530 dev_set_drvdata(&pdev->dev, priv);
1531
1532 ret = devm_snd_soc_register_component(&pdev->dev,
1533 &samsung_i2s_component,
1534 priv->dai_drv, num_dais);
1535 if (ret < 0)
1536 goto err_del_sec;
1537
1538 pm_runtime_set_active(&pdev->dev);
1539 pm_runtime_enable(&pdev->dev);
1540
1541 ret = i2s_register_clock_provider(priv);
1542 if (ret < 0)
1543 goto err_disable_pm;
1544
1545 priv->op_clk = clk_get_parent(priv->clk_table[CLK_I2S_RCLK_SRC]);
1546
1547 return 0;
1548
1549err_disable_pm:
1550 pm_runtime_disable(&pdev->dev);
1551err_del_sec:
1552 i2s_delete_secondary_device(priv);
1553err_disable_clk:
1554 clk_disable_unprepare(priv->clk);
1555 return ret;
1556}
1557
1558static void samsung_i2s_remove(struct platform_device *pdev)
1559{
1560 struct samsung_i2s_priv *priv = dev_get_drvdata(&pdev->dev);
1561
1562
1563 if (!priv)
1564 return;
1565
1566 pm_runtime_get_sync(&pdev->dev);
1567 pm_runtime_disable(&pdev->dev);
1568
1569 i2s_unregister_clock_provider(priv);
1570 i2s_delete_secondary_device(priv);
1571 clk_disable_unprepare(priv->clk);
1572
1573 pm_runtime_put_noidle(&pdev->dev);
1574}
1575
1576static void fsd_i2s_fixup_early(struct snd_pcm_substream *substream,
1577 struct snd_soc_dai *dai)
1578{
1579 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
1580 struct i2s_dai *i2s = to_info(snd_soc_rtd_to_cpu(rtd, 0));
1581 struct i2s_dai *other = get_other_dai(i2s);
1582
1583 if (!is_opened(other)) {
1584 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, 0, SND_SOC_CLOCK_OUT);
1585 i2s_set_sysclk(dai, SAMSUNG_I2S_OPCLK, 0, MOD_OPCLK_PCLK);
1586 }
1587}
1588
1589static void fsd_i2s_fixup_late(struct snd_pcm_substream *substream,
1590 struct snd_soc_dai *dai)
1591{
1592 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
1593 struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
1594 struct i2s_dai *i2s = to_info(snd_soc_rtd_to_cpu(rtd, 0));
1595 struct i2s_dai *other = get_other_dai(i2s);
1596
1597 if (!is_opened(other))
1598 writel(PSR_PSVAL(2) | PSR_PSREN, priv->addr + I2SPSR);
1599}
1600
1601static const struct samsung_i2s_variant_regs i2sv3_regs = {
1602 .bfs_off = 1,
1603 .rfs_off = 3,
1604 .sdf_off = 5,
1605 .txr_off = 8,
1606 .rclksrc_off = 10,
1607 .mss_off = 11,
1608 .cdclkcon_off = 12,
1609 .lrp_off = 7,
1610 .bfs_mask = 0x3,
1611 .rfs_mask = 0x3,
1612 .ftx0cnt_off = 8,
1613};
1614
1615static const struct samsung_i2s_variant_regs i2sv6_regs = {
1616 .bfs_off = 0,
1617 .rfs_off = 4,
1618 .sdf_off = 6,
1619 .txr_off = 8,
1620 .rclksrc_off = 10,
1621 .mss_off = 11,
1622 .cdclkcon_off = 12,
1623 .lrp_off = 15,
1624 .bfs_mask = 0xf,
1625 .rfs_mask = 0x3,
1626 .ftx0cnt_off = 8,
1627};
1628
1629static const struct samsung_i2s_variant_regs i2sv7_regs = {
1630 .bfs_off = 0,
1631 .rfs_off = 4,
1632 .sdf_off = 7,
1633 .txr_off = 9,
1634 .rclksrc_off = 11,
1635 .mss_off = 12,
1636 .cdclkcon_off = 22,
1637 .lrp_off = 15,
1638 .bfs_mask = 0xf,
1639 .rfs_mask = 0x7,
1640 .ftx0cnt_off = 0,
1641};
1642
1643static const struct samsung_i2s_variant_regs i2sv5_i2s1_regs = {
1644 .bfs_off = 0,
1645 .rfs_off = 3,
1646 .sdf_off = 6,
1647 .txr_off = 8,
1648 .rclksrc_off = 10,
1649 .mss_off = 11,
1650 .cdclkcon_off = 12,
1651 .lrp_off = 15,
1652 .bfs_mask = 0x7,
1653 .rfs_mask = 0x7,
1654 .ftx0cnt_off = 8,
1655};
1656
1657static const struct samsung_i2s_dai_data i2sv3_dai_type = {
1658 .quirks = QUIRK_NO_MUXPSR,
1659 .pcm_rates = SNDRV_PCM_RATE_8000_96000,
1660 .i2s_variant_regs = &i2sv3_regs,
1661};
1662
1663static const struct samsung_i2s_dai_data i2sv5_dai_type __maybe_unused = {
1664 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1665 QUIRK_SUPPORTS_IDMA,
1666 .pcm_rates = SNDRV_PCM_RATE_8000_96000,
1667 .i2s_variant_regs = &i2sv3_regs,
1668};
1669
1670static const struct samsung_i2s_dai_data i2sv6_dai_type __maybe_unused = {
1671 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1672 QUIRK_SUPPORTS_TDM | QUIRK_SUPPORTS_IDMA,
1673 .pcm_rates = SNDRV_PCM_RATE_8000_96000,
1674 .i2s_variant_regs = &i2sv6_regs,
1675};
1676
1677static const struct samsung_i2s_dai_data i2sv7_dai_type __maybe_unused = {
1678 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1679 QUIRK_SUPPORTS_TDM,
1680 .pcm_rates = SNDRV_PCM_RATE_8000_192000,
1681 .i2s_variant_regs = &i2sv7_regs,
1682};
1683
1684static const struct samsung_i2s_dai_data i2sv5_dai_type_i2s1 __maybe_unused = {
1685 .quirks = QUIRK_PRI_6CHAN | QUIRK_NEED_RSTCLR,
1686 .pcm_rates = SNDRV_PCM_RATE_8000_96000,
1687 .i2s_variant_regs = &i2sv5_i2s1_regs,
1688};
1689
1690static const struct samsung_i2s_dai_data fsd_dai_type __maybe_unused = {
1691 .quirks = QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | QUIRK_SUPPORTS_TDM,
1692 .pcm_rates = SNDRV_PCM_RATE_8000_192000,
1693 .i2s_variant_regs = &i2sv7_regs,
1694 .fixup_early = fsd_i2s_fixup_early,
1695 .fixup_late = fsd_i2s_fixup_late,
1696};
1697
1698static const struct platform_device_id samsung_i2s_driver_ids[] = {
1699 {
1700 .name = "samsung-i2s",
1701 .driver_data = (kernel_ulong_t)&i2sv3_dai_type,
1702 },
1703 {},
1704};
1705MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids);
1706
1707#ifdef CONFIG_OF
1708static const struct of_device_id exynos_i2s_match[] = {
1709 {
1710 .compatible = "samsung,s3c6410-i2s",
1711 .data = &i2sv3_dai_type,
1712 }, {
1713 .compatible = "samsung,s5pv210-i2s",
1714 .data = &i2sv5_dai_type,
1715 }, {
1716 .compatible = "samsung,exynos5420-i2s",
1717 .data = &i2sv6_dai_type,
1718 }, {
1719 .compatible = "samsung,exynos7-i2s",
1720 .data = &i2sv7_dai_type,
1721 }, {
1722 .compatible = "samsung,exynos7-i2s1",
1723 .data = &i2sv5_dai_type_i2s1,
1724 }, {
1725 .compatible = "tesla,fsd-i2s",
1726 .data = &fsd_dai_type,
1727 },
1728 {},
1729};
1730MODULE_DEVICE_TABLE(of, exynos_i2s_match);
1731#endif
1732
1733static const struct dev_pm_ops samsung_i2s_pm = {
1734 RUNTIME_PM_OPS(i2s_runtime_suspend, i2s_runtime_resume, NULL)
1735 SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
1736};
1737
1738static struct platform_driver samsung_i2s_driver = {
1739 .probe = samsung_i2s_probe,
1740 .remove = samsung_i2s_remove,
1741 .id_table = samsung_i2s_driver_ids,
1742 .driver = {
1743 .name = "samsung-i2s",
1744 .of_match_table = of_match_ptr(exynos_i2s_match),
1745 .pm = pm_ptr(&samsung_i2s_pm),
1746 },
1747};
1748
1749module_platform_driver(samsung_i2s_driver);
1750
1751
1752MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>");
1753MODULE_DESCRIPTION("Samsung I2S Interface");
1754MODULE_LICENSE("GPL");
1755
