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[mirror_ubuntu-bionic-kernel.git] / sound / soc / samsung / i2s.c
1 /* sound/soc/samsung/i2s.c
2 *
3 * ALSA SoC Audio Layer - Samsung I2S Controller driver
4 *
5 * Copyright (c) 2010 Samsung Electronics Co. Ltd.
6 * Jaswinder Singh <jassisinghbrar@gmail.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #include <dt-bindings/sound/samsung-i2s.h>
14 #include <linux/delay.h>
15 #include <linux/slab.h>
16 #include <linux/clk.h>
17 #include <linux/clk-provider.h>
18 #include <linux/io.h>
19 #include <linux/module.h>
20 #include <linux/of.h>
21 #include <linux/of_device.h>
22 #include <linux/of_gpio.h>
23 #include <linux/pm_runtime.h>
24
25 #include <sound/soc.h>
26 #include <sound/pcm_params.h>
27
28 #include <linux/platform_data/asoc-s3c.h>
29
30 #include "dma.h"
31 #include "idma.h"
32 #include "i2s.h"
33 #include "i2s-regs.h"
34
35 #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
36
37 struct samsung_i2s_variant_regs {
38 unsigned int bfs_off;
39 unsigned int rfs_off;
40 unsigned int sdf_off;
41 unsigned int txr_off;
42 unsigned int rclksrc_off;
43 unsigned int mss_off;
44 unsigned int cdclkcon_off;
45 unsigned int lrp_off;
46 unsigned int bfs_mask;
47 unsigned int rfs_mask;
48 unsigned int ftx0cnt_off;
49 };
50
51 struct samsung_i2s_dai_data {
52 u32 quirks;
53 unsigned int pcm_rates;
54 const struct samsung_i2s_variant_regs *i2s_variant_regs;
55 };
56
57 struct i2s_dai {
58 /* Platform device for this DAI */
59 struct platform_device *pdev;
60 /* Memory mapped SFR region */
61 void __iomem *addr;
62 /* Rate of RCLK source clock */
63 unsigned long rclk_srcrate;
64 /* Frame Clock */
65 unsigned frmclk;
66 /*
67 * Specifically requested RCLK,BCLK by MACHINE Driver.
68 * 0 indicates CPU driver is free to choose any value.
69 */
70 unsigned rfs, bfs;
71 /* I2S Controller's core clock */
72 struct clk *clk;
73 /* Clock for generating I2S signals */
74 struct clk *op_clk;
75 /* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */
76 struct i2s_dai *pri_dai;
77 /* Pointer to the Secondary_Fifo if it has one, NULL otherwise */
78 struct i2s_dai *sec_dai;
79 #define DAI_OPENED (1 << 0) /* Dai is opened */
80 #define DAI_MANAGER (1 << 1) /* Dai is the manager */
81 unsigned mode;
82 /* Driver for this DAI */
83 struct snd_soc_dai_driver i2s_dai_drv;
84 /* DMA parameters */
85 struct snd_dmaengine_dai_dma_data dma_playback;
86 struct snd_dmaengine_dai_dma_data dma_capture;
87 struct snd_dmaengine_dai_dma_data idma_playback;
88 dma_filter_fn filter;
89 u32 quirks;
90 u32 suspend_i2smod;
91 u32 suspend_i2scon;
92 u32 suspend_i2spsr;
93 const struct samsung_i2s_variant_regs *variant_regs;
94
95 /* Spinlock protecting access to the device's registers */
96 spinlock_t spinlock;
97 spinlock_t *lock;
98
99 /* Below fields are only valid if this is the primary FIFO */
100 struct clk *clk_table[3];
101 struct clk_onecell_data clk_data;
102 };
103
104 /* Lock for cross i/f checks */
105 static DEFINE_SPINLOCK(lock);
106
107 /* If this is the 'overlay' stereo DAI */
108 static inline bool is_secondary(struct i2s_dai *i2s)
109 {
110 return i2s->pri_dai ? true : false;
111 }
112
113 /* If operating in SoC-Slave mode */
114 static inline bool is_slave(struct i2s_dai *i2s)
115 {
116 u32 mod = readl(i2s->addr + I2SMOD);
117 return (mod & (1 << i2s->variant_regs->mss_off)) ? true : false;
118 }
119
120 /* If this interface of the controller is transmitting data */
121 static inline bool tx_active(struct i2s_dai *i2s)
122 {
123 u32 active;
124
125 if (!i2s)
126 return false;
127
128 active = readl(i2s->addr + I2SCON);
129
130 if (is_secondary(i2s))
131 active &= CON_TXSDMA_ACTIVE;
132 else
133 active &= CON_TXDMA_ACTIVE;
134
135 return active ? true : false;
136 }
137
138 /* Return pointer to the other DAI */
139 static inline struct i2s_dai *get_other_dai(struct i2s_dai *i2s)
140 {
141 return i2s->pri_dai ? : i2s->sec_dai;
142 }
143
144 /* If the other interface of the controller is transmitting data */
145 static inline bool other_tx_active(struct i2s_dai *i2s)
146 {
147 struct i2s_dai *other = get_other_dai(i2s);
148
149 return tx_active(other);
150 }
151
152 /* If any interface of the controller is transmitting data */
153 static inline bool any_tx_active(struct i2s_dai *i2s)
154 {
155 return tx_active(i2s) || other_tx_active(i2s);
156 }
157
158 /* If this interface of the controller is receiving data */
159 static inline bool rx_active(struct i2s_dai *i2s)
160 {
161 u32 active;
162
163 if (!i2s)
164 return false;
165
166 active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE;
167
168 return active ? true : false;
169 }
170
171 /* If the other interface of the controller is receiving data */
172 static inline bool other_rx_active(struct i2s_dai *i2s)
173 {
174 struct i2s_dai *other = get_other_dai(i2s);
175
176 return rx_active(other);
177 }
178
179 /* If any interface of the controller is receiving data */
180 static inline bool any_rx_active(struct i2s_dai *i2s)
181 {
182 return rx_active(i2s) || other_rx_active(i2s);
183 }
184
185 /* If the other DAI is transmitting or receiving data */
186 static inline bool other_active(struct i2s_dai *i2s)
187 {
188 return other_rx_active(i2s) || other_tx_active(i2s);
189 }
190
191 /* If this DAI is transmitting or receiving data */
192 static inline bool this_active(struct i2s_dai *i2s)
193 {
194 return tx_active(i2s) || rx_active(i2s);
195 }
196
197 /* If the controller is active anyway */
198 static inline bool any_active(struct i2s_dai *i2s)
199 {
200 return this_active(i2s) || other_active(i2s);
201 }
202
203 static inline struct i2s_dai *to_info(struct snd_soc_dai *dai)
204 {
205 return snd_soc_dai_get_drvdata(dai);
206 }
207
208 static inline bool is_opened(struct i2s_dai *i2s)
209 {
210 if (i2s && (i2s->mode & DAI_OPENED))
211 return true;
212 else
213 return false;
214 }
215
216 static inline bool is_manager(struct i2s_dai *i2s)
217 {
218 if (is_opened(i2s) && (i2s->mode & DAI_MANAGER))
219 return true;
220 else
221 return false;
222 }
223
224 /* Read RCLK of I2S (in multiples of LRCLK) */
225 static inline unsigned get_rfs(struct i2s_dai *i2s)
226 {
227 u32 rfs;
228 rfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->rfs_off;
229 rfs &= i2s->variant_regs->rfs_mask;
230
231 switch (rfs) {
232 case 7: return 192;
233 case 6: return 96;
234 case 5: return 128;
235 case 4: return 64;
236 case 3: return 768;
237 case 2: return 384;
238 case 1: return 512;
239 default: return 256;
240 }
241 }
242
243 /* Write RCLK of I2S (in multiples of LRCLK) */
244 static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
245 {
246 u32 mod = readl(i2s->addr + I2SMOD);
247 int rfs_shift = i2s->variant_regs->rfs_off;
248
249 mod &= ~(i2s->variant_regs->rfs_mask << rfs_shift);
250
251 switch (rfs) {
252 case 192:
253 mod |= (EXYNOS7_MOD_RCLK_192FS << rfs_shift);
254 break;
255 case 96:
256 mod |= (EXYNOS7_MOD_RCLK_96FS << rfs_shift);
257 break;
258 case 128:
259 mod |= (EXYNOS7_MOD_RCLK_128FS << rfs_shift);
260 break;
261 case 64:
262 mod |= (EXYNOS7_MOD_RCLK_64FS << rfs_shift);
263 break;
264 case 768:
265 mod |= (MOD_RCLK_768FS << rfs_shift);
266 break;
267 case 512:
268 mod |= (MOD_RCLK_512FS << rfs_shift);
269 break;
270 case 384:
271 mod |= (MOD_RCLK_384FS << rfs_shift);
272 break;
273 default:
274 mod |= (MOD_RCLK_256FS << rfs_shift);
275 break;
276 }
277
278 writel(mod, i2s->addr + I2SMOD);
279 }
280
281 /* Read Bit-Clock of I2S (in multiples of LRCLK) */
282 static inline unsigned get_bfs(struct i2s_dai *i2s)
283 {
284 u32 bfs;
285 bfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->bfs_off;
286 bfs &= i2s->variant_regs->bfs_mask;
287
288 switch (bfs) {
289 case 8: return 256;
290 case 7: return 192;
291 case 6: return 128;
292 case 5: return 96;
293 case 4: return 64;
294 case 3: return 24;
295 case 2: return 16;
296 case 1: return 48;
297 default: return 32;
298 }
299 }
300
301 /* Write Bit-Clock of I2S (in multiples of LRCLK) */
302 static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
303 {
304 u32 mod = readl(i2s->addr + I2SMOD);
305 int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM;
306 int bfs_shift = i2s->variant_regs->bfs_off;
307
308 /* Non-TDM I2S controllers do not support BCLK > 48 * FS */
309 if (!tdm && bfs > 48) {
310 dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n");
311 return;
312 }
313
314 mod &= ~(i2s->variant_regs->bfs_mask << bfs_shift);
315
316 switch (bfs) {
317 case 48:
318 mod |= (MOD_BCLK_48FS << bfs_shift);
319 break;
320 case 32:
321 mod |= (MOD_BCLK_32FS << bfs_shift);
322 break;
323 case 24:
324 mod |= (MOD_BCLK_24FS << bfs_shift);
325 break;
326 case 16:
327 mod |= (MOD_BCLK_16FS << bfs_shift);
328 break;
329 case 64:
330 mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift);
331 break;
332 case 96:
333 mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift);
334 break;
335 case 128:
336 mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift);
337 break;
338 case 192:
339 mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift);
340 break;
341 case 256:
342 mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift);
343 break;
344 default:
345 dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n");
346 return;
347 }
348
349 writel(mod, i2s->addr + I2SMOD);
350 }
351
352 /* Sample-Size */
353 static inline int get_blc(struct i2s_dai *i2s)
354 {
355 int blc = readl(i2s->addr + I2SMOD);
356
357 blc = (blc >> 13) & 0x3;
358
359 switch (blc) {
360 case 2: return 24;
361 case 1: return 8;
362 default: return 16;
363 }
364 }
365
366 /* TX Channel Control */
367 static void i2s_txctrl(struct i2s_dai *i2s, int on)
368 {
369 void __iomem *addr = i2s->addr;
370 int txr_off = i2s->variant_regs->txr_off;
371 u32 con = readl(addr + I2SCON);
372 u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
373
374 if (on) {
375 con |= CON_ACTIVE;
376 con &= ~CON_TXCH_PAUSE;
377
378 if (is_secondary(i2s)) {
379 con |= CON_TXSDMA_ACTIVE;
380 con &= ~CON_TXSDMA_PAUSE;
381 } else {
382 con |= CON_TXDMA_ACTIVE;
383 con &= ~CON_TXDMA_PAUSE;
384 }
385
386 if (any_rx_active(i2s))
387 mod |= 2 << txr_off;
388 else
389 mod |= 0 << txr_off;
390 } else {
391 if (is_secondary(i2s)) {
392 con |= CON_TXSDMA_PAUSE;
393 con &= ~CON_TXSDMA_ACTIVE;
394 } else {
395 con |= CON_TXDMA_PAUSE;
396 con &= ~CON_TXDMA_ACTIVE;
397 }
398
399 if (other_tx_active(i2s)) {
400 writel(con, addr + I2SCON);
401 return;
402 }
403
404 con |= CON_TXCH_PAUSE;
405
406 if (any_rx_active(i2s))
407 mod |= 1 << txr_off;
408 else
409 con &= ~CON_ACTIVE;
410 }
411
412 writel(mod, addr + I2SMOD);
413 writel(con, addr + I2SCON);
414 }
415
416 /* RX Channel Control */
417 static void i2s_rxctrl(struct i2s_dai *i2s, int on)
418 {
419 void __iomem *addr = i2s->addr;
420 int txr_off = i2s->variant_regs->txr_off;
421 u32 con = readl(addr + I2SCON);
422 u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
423
424 if (on) {
425 con |= CON_RXDMA_ACTIVE | CON_ACTIVE;
426 con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE);
427
428 if (any_tx_active(i2s))
429 mod |= 2 << txr_off;
430 else
431 mod |= 1 << txr_off;
432 } else {
433 con |= CON_RXDMA_PAUSE | CON_RXCH_PAUSE;
434 con &= ~CON_RXDMA_ACTIVE;
435
436 if (any_tx_active(i2s))
437 mod |= 0 << txr_off;
438 else
439 con &= ~CON_ACTIVE;
440 }
441
442 writel(mod, addr + I2SMOD);
443 writel(con, addr + I2SCON);
444 }
445
446 /* Flush FIFO of an interface */
447 static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush)
448 {
449 void __iomem *fic;
450 u32 val;
451
452 if (!i2s)
453 return;
454
455 if (is_secondary(i2s))
456 fic = i2s->addr + I2SFICS;
457 else
458 fic = i2s->addr + I2SFIC;
459
460 /* Flush the FIFO */
461 writel(readl(fic) | flush, fic);
462
463 /* Be patient */
464 val = msecs_to_loops(1) / 1000; /* 1 usec */
465 while (--val)
466 cpu_relax();
467
468 writel(readl(fic) & ~flush, fic);
469 }
470
471 static int i2s_set_sysclk(struct snd_soc_dai *dai,
472 int clk_id, unsigned int rfs, int dir)
473 {
474 struct i2s_dai *i2s = to_info(dai);
475 struct i2s_dai *other = get_other_dai(i2s);
476 const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs;
477 unsigned int cdcon_mask = 1 << i2s_regs->cdclkcon_off;
478 unsigned int rsrc_mask = 1 << i2s_regs->rclksrc_off;
479 u32 mod, mask, val = 0;
480 unsigned long flags;
481 int ret = 0;
482
483 pm_runtime_get_sync(dai->dev);
484
485 spin_lock_irqsave(i2s->lock, flags);
486 mod = readl(i2s->addr + I2SMOD);
487 spin_unlock_irqrestore(i2s->lock, flags);
488
489 switch (clk_id) {
490 case SAMSUNG_I2S_OPCLK:
491 mask = MOD_OPCLK_MASK;
492 val = dir;
493 break;
494 case SAMSUNG_I2S_CDCLK:
495 mask = 1 << i2s_regs->cdclkcon_off;
496 /* Shouldn't matter in GATING(CLOCK_IN) mode */
497 if (dir == SND_SOC_CLOCK_IN)
498 rfs = 0;
499
500 if ((rfs && other && other->rfs && (other->rfs != rfs)) ||
501 (any_active(i2s) &&
502 (((dir == SND_SOC_CLOCK_IN)
503 && !(mod & cdcon_mask)) ||
504 ((dir == SND_SOC_CLOCK_OUT)
505 && (mod & cdcon_mask))))) {
506 dev_err(&i2s->pdev->dev,
507 "%s:%d Other DAI busy\n", __func__, __LINE__);
508 ret = -EAGAIN;
509 goto err;
510 }
511
512 if (dir == SND_SOC_CLOCK_IN)
513 val = 1 << i2s_regs->cdclkcon_off;
514
515 i2s->rfs = rfs;
516 break;
517
518 case SAMSUNG_I2S_RCLKSRC_0: /* clock corrsponding to IISMOD[10] := 0 */
519 case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */
520 mask = 1 << i2s_regs->rclksrc_off;
521
522 if ((i2s->quirks & QUIRK_NO_MUXPSR)
523 || (clk_id == SAMSUNG_I2S_RCLKSRC_0))
524 clk_id = 0;
525 else
526 clk_id = 1;
527
528 if (!any_active(i2s)) {
529 if (i2s->op_clk && !IS_ERR(i2s->op_clk)) {
530 if ((clk_id && !(mod & rsrc_mask)) ||
531 (!clk_id && (mod & rsrc_mask))) {
532 clk_disable_unprepare(i2s->op_clk);
533 clk_put(i2s->op_clk);
534 } else {
535 i2s->rclk_srcrate =
536 clk_get_rate(i2s->op_clk);
537 goto done;
538 }
539 }
540
541 if (clk_id)
542 i2s->op_clk = clk_get(&i2s->pdev->dev,
543 "i2s_opclk1");
544 else
545 i2s->op_clk = clk_get(&i2s->pdev->dev,
546 "i2s_opclk0");
547
548 if (WARN_ON(IS_ERR(i2s->op_clk))) {
549 ret = PTR_ERR(i2s->op_clk);
550 i2s->op_clk = NULL;
551 goto err;
552 }
553
554 ret = clk_prepare_enable(i2s->op_clk);
555 if (ret) {
556 clk_put(i2s->op_clk);
557 i2s->op_clk = NULL;
558 goto err;
559 }
560 i2s->rclk_srcrate = clk_get_rate(i2s->op_clk);
561
562 /* Over-ride the other's */
563 if (other) {
564 other->op_clk = i2s->op_clk;
565 other->rclk_srcrate = i2s->rclk_srcrate;
566 }
567 } else if ((!clk_id && (mod & rsrc_mask))
568 || (clk_id && !(mod & rsrc_mask))) {
569 dev_err(&i2s->pdev->dev,
570 "%s:%d Other DAI busy\n", __func__, __LINE__);
571 ret = -EAGAIN;
572 goto err;
573 } else {
574 /* Call can't be on the active DAI */
575 i2s->op_clk = other->op_clk;
576 i2s->rclk_srcrate = other->rclk_srcrate;
577 goto done;
578 }
579
580 if (clk_id == 1)
581 val = 1 << i2s_regs->rclksrc_off;
582 break;
583 default:
584 dev_err(&i2s->pdev->dev, "We don't serve that!\n");
585 ret = -EINVAL;
586 goto err;
587 }
588
589 spin_lock_irqsave(i2s->lock, flags);
590 mod = readl(i2s->addr + I2SMOD);
591 mod = (mod & ~mask) | val;
592 writel(mod, i2s->addr + I2SMOD);
593 spin_unlock_irqrestore(i2s->lock, flags);
594 done:
595 pm_runtime_put(dai->dev);
596
597 return 0;
598 err:
599 pm_runtime_put(dai->dev);
600 return ret;
601 }
602
603 static int i2s_set_fmt(struct snd_soc_dai *dai,
604 unsigned int fmt)
605 {
606 struct i2s_dai *i2s = to_info(dai);
607 int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave;
608 u32 mod, tmp = 0;
609 unsigned long flags;
610
611 lrp_shift = i2s->variant_regs->lrp_off;
612 sdf_shift = i2s->variant_regs->sdf_off;
613 mod_slave = 1 << i2s->variant_regs->mss_off;
614
615 sdf_mask = MOD_SDF_MASK << sdf_shift;
616 lrp_rlow = MOD_LR_RLOW << lrp_shift;
617
618 /* Format is priority */
619 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
620 case SND_SOC_DAIFMT_RIGHT_J:
621 tmp |= lrp_rlow;
622 tmp |= (MOD_SDF_MSB << sdf_shift);
623 break;
624 case SND_SOC_DAIFMT_LEFT_J:
625 tmp |= lrp_rlow;
626 tmp |= (MOD_SDF_LSB << sdf_shift);
627 break;
628 case SND_SOC_DAIFMT_I2S:
629 tmp |= (MOD_SDF_IIS << sdf_shift);
630 break;
631 default:
632 dev_err(&i2s->pdev->dev, "Format not supported\n");
633 return -EINVAL;
634 }
635
636 /*
637 * INV flag is relative to the FORMAT flag - if set it simply
638 * flips the polarity specified by the Standard
639 */
640 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
641 case SND_SOC_DAIFMT_NB_NF:
642 break;
643 case SND_SOC_DAIFMT_NB_IF:
644 if (tmp & lrp_rlow)
645 tmp &= ~lrp_rlow;
646 else
647 tmp |= lrp_rlow;
648 break;
649 default:
650 dev_err(&i2s->pdev->dev, "Polarity not supported\n");
651 return -EINVAL;
652 }
653
654 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
655 case SND_SOC_DAIFMT_CBM_CFM:
656 tmp |= mod_slave;
657 break;
658 case SND_SOC_DAIFMT_CBS_CFS:
659 /* Set default source clock in Master mode */
660 if (i2s->rclk_srcrate == 0)
661 i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0,
662 0, SND_SOC_CLOCK_IN);
663 break;
664 default:
665 dev_err(&i2s->pdev->dev, "master/slave format not supported\n");
666 return -EINVAL;
667 }
668
669 pm_runtime_get_sync(dai->dev);
670 spin_lock_irqsave(i2s->lock, flags);
671 mod = readl(i2s->addr + I2SMOD);
672 /*
673 * Don't change the I2S mode if any controller is active on this
674 * channel.
675 */
676 if (any_active(i2s) &&
677 ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) {
678 spin_unlock_irqrestore(i2s->lock, flags);
679 pm_runtime_put(dai->dev);
680 dev_err(&i2s->pdev->dev,
681 "%s:%d Other DAI busy\n", __func__, __LINE__);
682 return -EAGAIN;
683 }
684
685 mod &= ~(sdf_mask | lrp_rlow | mod_slave);
686 mod |= tmp;
687 writel(mod, i2s->addr + I2SMOD);
688 spin_unlock_irqrestore(i2s->lock, flags);
689 pm_runtime_put(dai->dev);
690
691 return 0;
692 }
693
694 static int i2s_hw_params(struct snd_pcm_substream *substream,
695 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
696 {
697 struct i2s_dai *i2s = to_info(dai);
698 u32 mod, mask = 0, val = 0;
699 unsigned long flags;
700
701 WARN_ON(!pm_runtime_active(dai->dev));
702
703 if (!is_secondary(i2s))
704 mask |= (MOD_DC2_EN | MOD_DC1_EN);
705
706 switch (params_channels(params)) {
707 case 6:
708 val |= MOD_DC2_EN;
709 case 4:
710 val |= MOD_DC1_EN;
711 break;
712 case 2:
713 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
714 i2s->dma_playback.addr_width = 4;
715 else
716 i2s->dma_capture.addr_width = 4;
717 break;
718 case 1:
719 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
720 i2s->dma_playback.addr_width = 2;
721 else
722 i2s->dma_capture.addr_width = 2;
723
724 break;
725 default:
726 dev_err(&i2s->pdev->dev, "%d channels not supported\n",
727 params_channels(params));
728 return -EINVAL;
729 }
730
731 if (is_secondary(i2s))
732 mask |= MOD_BLCS_MASK;
733 else
734 mask |= MOD_BLCP_MASK;
735
736 if (is_manager(i2s))
737 mask |= MOD_BLC_MASK;
738
739 switch (params_width(params)) {
740 case 8:
741 if (is_secondary(i2s))
742 val |= MOD_BLCS_8BIT;
743 else
744 val |= MOD_BLCP_8BIT;
745 if (is_manager(i2s))
746 val |= MOD_BLC_8BIT;
747 break;
748 case 16:
749 if (is_secondary(i2s))
750 val |= MOD_BLCS_16BIT;
751 else
752 val |= MOD_BLCP_16BIT;
753 if (is_manager(i2s))
754 val |= MOD_BLC_16BIT;
755 break;
756 case 24:
757 if (is_secondary(i2s))
758 val |= MOD_BLCS_24BIT;
759 else
760 val |= MOD_BLCP_24BIT;
761 if (is_manager(i2s))
762 val |= MOD_BLC_24BIT;
763 break;
764 default:
765 dev_err(&i2s->pdev->dev, "Format(%d) not supported\n",
766 params_format(params));
767 return -EINVAL;
768 }
769
770 spin_lock_irqsave(i2s->lock, flags);
771 mod = readl(i2s->addr + I2SMOD);
772 mod = (mod & ~mask) | val;
773 writel(mod, i2s->addr + I2SMOD);
774 spin_unlock_irqrestore(i2s->lock, flags);
775
776 snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
777
778 i2s->frmclk = params_rate(params);
779
780 return 0;
781 }
782
783 /* We set constraints on the substream acc to the version of I2S */
784 static int i2s_startup(struct snd_pcm_substream *substream,
785 struct snd_soc_dai *dai)
786 {
787 struct i2s_dai *i2s = to_info(dai);
788 struct i2s_dai *other = get_other_dai(i2s);
789 unsigned long flags;
790
791 pm_runtime_get_sync(dai->dev);
792
793 spin_lock_irqsave(&lock, flags);
794
795 i2s->mode |= DAI_OPENED;
796
797 if (is_manager(other))
798 i2s->mode &= ~DAI_MANAGER;
799 else
800 i2s->mode |= DAI_MANAGER;
801
802 if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR))
803 writel(CON_RSTCLR, i2s->addr + I2SCON);
804
805 spin_unlock_irqrestore(&lock, flags);
806
807 return 0;
808 }
809
810 static void i2s_shutdown(struct snd_pcm_substream *substream,
811 struct snd_soc_dai *dai)
812 {
813 struct i2s_dai *i2s = to_info(dai);
814 struct i2s_dai *other = get_other_dai(i2s);
815 unsigned long flags;
816
817 spin_lock_irqsave(&lock, flags);
818
819 i2s->mode &= ~DAI_OPENED;
820 i2s->mode &= ~DAI_MANAGER;
821
822 if (is_opened(other))
823 other->mode |= DAI_MANAGER;
824
825 /* Reset any constraint on RFS and BFS */
826 i2s->rfs = 0;
827 i2s->bfs = 0;
828
829 spin_unlock_irqrestore(&lock, flags);
830
831 pm_runtime_put(dai->dev);
832 }
833
834 static int config_setup(struct i2s_dai *i2s)
835 {
836 struct i2s_dai *other = get_other_dai(i2s);
837 unsigned rfs, bfs, blc;
838 u32 psr;
839
840 blc = get_blc(i2s);
841
842 bfs = i2s->bfs;
843
844 if (!bfs && other)
845 bfs = other->bfs;
846
847 /* Select least possible multiple(2) if no constraint set */
848 if (!bfs)
849 bfs = blc * 2;
850
851 rfs = i2s->rfs;
852
853 if (!rfs && other)
854 rfs = other->rfs;
855
856 if ((rfs == 256 || rfs == 512) && (blc == 24)) {
857 dev_err(&i2s->pdev->dev,
858 "%d-RFS not supported for 24-blc\n", rfs);
859 return -EINVAL;
860 }
861
862 if (!rfs) {
863 if (bfs == 16 || bfs == 32)
864 rfs = 256;
865 else
866 rfs = 384;
867 }
868
869 /* If already setup and running */
870 if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) {
871 dev_err(&i2s->pdev->dev,
872 "%s:%d Other DAI busy\n", __func__, __LINE__);
873 return -EAGAIN;
874 }
875
876 set_bfs(i2s, bfs);
877 set_rfs(i2s, rfs);
878
879 /* Don't bother with PSR in Slave mode */
880 if (is_slave(i2s))
881 return 0;
882
883 if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
884 psr = i2s->rclk_srcrate / i2s->frmclk / rfs;
885 writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR);
886 dev_dbg(&i2s->pdev->dev,
887 "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n",
888 i2s->rclk_srcrate, psr, rfs, bfs);
889 }
890
891 return 0;
892 }
893
894 static int i2s_trigger(struct snd_pcm_substream *substream,
895 int cmd, struct snd_soc_dai *dai)
896 {
897 int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
898 struct snd_soc_pcm_runtime *rtd = substream->private_data;
899 struct i2s_dai *i2s = to_info(rtd->cpu_dai);
900 unsigned long flags;
901
902 switch (cmd) {
903 case SNDRV_PCM_TRIGGER_START:
904 case SNDRV_PCM_TRIGGER_RESUME:
905 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
906 pm_runtime_get_sync(dai->dev);
907 spin_lock_irqsave(i2s->lock, flags);
908
909 if (config_setup(i2s)) {
910 spin_unlock_irqrestore(i2s->lock, flags);
911 return -EINVAL;
912 }
913
914 if (capture)
915 i2s_rxctrl(i2s, 1);
916 else
917 i2s_txctrl(i2s, 1);
918
919 spin_unlock_irqrestore(i2s->lock, flags);
920 break;
921 case SNDRV_PCM_TRIGGER_STOP:
922 case SNDRV_PCM_TRIGGER_SUSPEND:
923 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
924 spin_lock_irqsave(i2s->lock, flags);
925
926 if (capture) {
927 i2s_rxctrl(i2s, 0);
928 i2s_fifo(i2s, FIC_RXFLUSH);
929 } else {
930 i2s_txctrl(i2s, 0);
931 i2s_fifo(i2s, FIC_TXFLUSH);
932 }
933
934 spin_unlock_irqrestore(i2s->lock, flags);
935 pm_runtime_put(dai->dev);
936 break;
937 }
938
939 return 0;
940 }
941
942 static int i2s_set_clkdiv(struct snd_soc_dai *dai,
943 int div_id, int div)
944 {
945 struct i2s_dai *i2s = to_info(dai);
946 struct i2s_dai *other = get_other_dai(i2s);
947
948 switch (div_id) {
949 case SAMSUNG_I2S_DIV_BCLK:
950 pm_runtime_get_sync(dai->dev);
951 if ((any_active(i2s) && div && (get_bfs(i2s) != div))
952 || (other && other->bfs && (other->bfs != div))) {
953 pm_runtime_put(dai->dev);
954 dev_err(&i2s->pdev->dev,
955 "%s:%d Other DAI busy\n", __func__, __LINE__);
956 return -EAGAIN;
957 }
958 i2s->bfs = div;
959 pm_runtime_put(dai->dev);
960 break;
961 default:
962 dev_err(&i2s->pdev->dev,
963 "Invalid clock divider(%d)\n", div_id);
964 return -EINVAL;
965 }
966
967 return 0;
968 }
969
970 static snd_pcm_sframes_t
971 i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
972 {
973 struct i2s_dai *i2s = to_info(dai);
974 u32 reg = readl(i2s->addr + I2SFIC);
975 snd_pcm_sframes_t delay;
976 const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs;
977
978 WARN_ON(!pm_runtime_active(dai->dev));
979
980 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
981 delay = FIC_RXCOUNT(reg);
982 else if (is_secondary(i2s))
983 delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS));
984 else
985 delay = (reg >> i2s_regs->ftx0cnt_off) & 0x7f;
986
987 return delay;
988 }
989
990 #ifdef CONFIG_PM
991 static int i2s_suspend(struct snd_soc_dai *dai)
992 {
993 return pm_runtime_force_suspend(dai->dev);
994 }
995
996 static int i2s_resume(struct snd_soc_dai *dai)
997 {
998 return pm_runtime_force_resume(dai->dev);
999 }
1000 #else
1001 #define i2s_suspend NULL
1002 #define i2s_resume NULL
1003 #endif
1004
1005 static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
1006 {
1007 struct i2s_dai *i2s = to_info(dai);
1008 struct i2s_dai *other = get_other_dai(i2s);
1009 unsigned long flags;
1010
1011 pm_runtime_get_sync(dai->dev);
1012
1013 if (is_secondary(i2s)) { /* If this is probe on the secondary DAI */
1014 snd_soc_dai_init_dma_data(dai, &other->sec_dai->dma_playback,
1015 NULL);
1016 } else {
1017 snd_soc_dai_init_dma_data(dai, &i2s->dma_playback,
1018 &i2s->dma_capture);
1019
1020 if (i2s->quirks & QUIRK_NEED_RSTCLR)
1021 writel(CON_RSTCLR, i2s->addr + I2SCON);
1022
1023 if (i2s->quirks & QUIRK_SUPPORTS_IDMA)
1024 idma_reg_addr_init(i2s->addr,
1025 i2s->sec_dai->idma_playback.addr);
1026 }
1027
1028 /* Reset any constraint on RFS and BFS */
1029 i2s->rfs = 0;
1030 i2s->bfs = 0;
1031 i2s->rclk_srcrate = 0;
1032
1033 spin_lock_irqsave(i2s->lock, flags);
1034 i2s_txctrl(i2s, 0);
1035 i2s_rxctrl(i2s, 0);
1036 i2s_fifo(i2s, FIC_TXFLUSH);
1037 i2s_fifo(other, FIC_TXFLUSH);
1038 i2s_fifo(i2s, FIC_RXFLUSH);
1039 spin_unlock_irqrestore(i2s->lock, flags);
1040
1041 /* Gate CDCLK by default */
1042 if (!is_opened(other))
1043 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK,
1044 0, SND_SOC_CLOCK_IN);
1045 pm_runtime_put(dai->dev);
1046
1047 return 0;
1048 }
1049
1050 static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
1051 {
1052 struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai);
1053 unsigned long flags;
1054
1055 pm_runtime_get_sync(dai->dev);
1056
1057 if (!is_secondary(i2s)) {
1058 if (i2s->quirks & QUIRK_NEED_RSTCLR) {
1059 spin_lock_irqsave(i2s->lock, flags);
1060 writel(0, i2s->addr + I2SCON);
1061 spin_unlock_irqrestore(i2s->lock, flags);
1062 }
1063 }
1064
1065 pm_runtime_put(dai->dev);
1066
1067 return 0;
1068 }
1069
1070 static const struct snd_soc_dai_ops samsung_i2s_dai_ops = {
1071 .trigger = i2s_trigger,
1072 .hw_params = i2s_hw_params,
1073 .set_fmt = i2s_set_fmt,
1074 .set_clkdiv = i2s_set_clkdiv,
1075 .set_sysclk = i2s_set_sysclk,
1076 .startup = i2s_startup,
1077 .shutdown = i2s_shutdown,
1078 .delay = i2s_delay,
1079 };
1080
1081 static const struct snd_soc_component_driver samsung_i2s_component = {
1082 .name = "samsung-i2s",
1083 };
1084
1085 #define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \
1086 SNDRV_PCM_FMTBIT_S16_LE | \
1087 SNDRV_PCM_FMTBIT_S24_LE)
1088
1089 static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev,
1090 const struct samsung_i2s_dai_data *i2s_dai_data,
1091 bool sec)
1092 {
1093 struct i2s_dai *i2s;
1094
1095 i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL);
1096 if (i2s == NULL)
1097 return NULL;
1098
1099 i2s->pdev = pdev;
1100 i2s->pri_dai = NULL;
1101 i2s->sec_dai = NULL;
1102 i2s->i2s_dai_drv.id = 1;
1103 i2s->i2s_dai_drv.symmetric_rates = 1;
1104 i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe;
1105 i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove;
1106 i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops;
1107 i2s->i2s_dai_drv.suspend = i2s_suspend;
1108 i2s->i2s_dai_drv.resume = i2s_resume;
1109 i2s->i2s_dai_drv.playback.channels_min = 1;
1110 i2s->i2s_dai_drv.playback.channels_max = 2;
1111 i2s->i2s_dai_drv.playback.rates = i2s_dai_data->pcm_rates;
1112 i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS;
1113
1114 if (!sec) {
1115 i2s->i2s_dai_drv.name = SAMSUNG_I2S_DAI;
1116 i2s->i2s_dai_drv.capture.channels_min = 1;
1117 i2s->i2s_dai_drv.capture.channels_max = 2;
1118 i2s->i2s_dai_drv.capture.rates = i2s_dai_data->pcm_rates;
1119 i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS;
1120 } else {
1121 i2s->i2s_dai_drv.name = SAMSUNG_I2S_DAI_SEC;
1122 }
1123 return i2s;
1124 }
1125
1126 #ifdef CONFIG_PM
1127 static int i2s_runtime_suspend(struct device *dev)
1128 {
1129 struct i2s_dai *i2s = dev_get_drvdata(dev);
1130
1131 i2s->suspend_i2smod = readl(i2s->addr + I2SMOD);
1132 i2s->suspend_i2scon = readl(i2s->addr + I2SCON);
1133 i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);
1134
1135 if (i2s->op_clk)
1136 clk_disable_unprepare(i2s->op_clk);
1137 clk_disable_unprepare(i2s->clk);
1138
1139 return 0;
1140 }
1141
1142 static int i2s_runtime_resume(struct device *dev)
1143 {
1144 struct i2s_dai *i2s = dev_get_drvdata(dev);
1145 int ret;
1146
1147 ret = clk_prepare_enable(i2s->clk);
1148 if (ret)
1149 return ret;
1150
1151 if (i2s->op_clk) {
1152 ret = clk_prepare_enable(i2s->op_clk);
1153 if (ret) {
1154 clk_disable_unprepare(i2s->clk);
1155 return ret;
1156 }
1157 }
1158
1159 writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
1160 writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);
1161 writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR);
1162
1163 return 0;
1164 }
1165 #endif /* CONFIG_PM */
1166
1167 static void i2s_unregister_clocks(struct i2s_dai *i2s)
1168 {
1169 int i;
1170
1171 for (i = 0; i < i2s->clk_data.clk_num; i++) {
1172 if (!IS_ERR(i2s->clk_table[i]))
1173 clk_unregister(i2s->clk_table[i]);
1174 }
1175 }
1176
1177 static void i2s_unregister_clock_provider(struct platform_device *pdev)
1178 {
1179 struct i2s_dai *i2s = dev_get_drvdata(&pdev->dev);
1180
1181 of_clk_del_provider(pdev->dev.of_node);
1182 i2s_unregister_clocks(i2s);
1183 }
1184
1185 static int i2s_register_clock_provider(struct platform_device *pdev)
1186 {
1187 struct device *dev = &pdev->dev;
1188 struct i2s_dai *i2s = dev_get_drvdata(dev);
1189 const char *clk_name[2] = { "i2s_opclk0", "i2s_opclk1" };
1190 const char *p_names[2] = { NULL };
1191 const struct samsung_i2s_variant_regs *reg_info = i2s->variant_regs;
1192 struct clk *rclksrc;
1193 int ret, i;
1194
1195 /* Register the clock provider only if it's expected in the DTB */
1196 if (!of_find_property(dev->of_node, "#clock-cells", NULL))
1197 return 0;
1198
1199 /* Get the RCLKSRC mux clock parent clock names */
1200 for (i = 0; i < ARRAY_SIZE(p_names); i++) {
1201 rclksrc = clk_get(dev, clk_name[i]);
1202 if (IS_ERR(rclksrc))
1203 continue;
1204 p_names[i] = __clk_get_name(rclksrc);
1205 clk_put(rclksrc);
1206 }
1207
1208 if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
1209 /* Activate the prescaler */
1210 u32 val = readl(i2s->addr + I2SPSR);
1211 writel(val | PSR_PSREN, i2s->addr + I2SPSR);
1212
1213 i2s->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(dev,
1214 "i2s_rclksrc", p_names, ARRAY_SIZE(p_names),
1215 CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT,
1216 i2s->addr + I2SMOD, reg_info->rclksrc_off,
1217 1, 0, i2s->lock);
1218
1219 i2s->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(dev,
1220 "i2s_presc", "i2s_rclksrc",
1221 CLK_SET_RATE_PARENT,
1222 i2s->addr + I2SPSR, 8, 6, 0, i2s->lock);
1223
1224 p_names[0] = "i2s_presc";
1225 i2s->clk_data.clk_num = 2;
1226 }
1227 of_property_read_string_index(dev->of_node,
1228 "clock-output-names", 0, &clk_name[0]);
1229
1230 i2s->clk_table[CLK_I2S_CDCLK] = clk_register_gate(dev, clk_name[0],
1231 p_names[0], CLK_SET_RATE_PARENT,
1232 i2s->addr + I2SMOD, reg_info->cdclkcon_off,
1233 CLK_GATE_SET_TO_DISABLE, i2s->lock);
1234
1235 i2s->clk_data.clk_num += 1;
1236 i2s->clk_data.clks = i2s->clk_table;
1237
1238 ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
1239 &i2s->clk_data);
1240 if (ret < 0) {
1241 dev_err(dev, "failed to add clock provider: %d\n", ret);
1242 i2s_unregister_clocks(i2s);
1243 }
1244
1245 return ret;
1246 }
1247
1248 static int samsung_i2s_probe(struct platform_device *pdev)
1249 {
1250 struct i2s_dai *pri_dai, *sec_dai = NULL;
1251 struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data;
1252 struct resource *res;
1253 u32 regs_base, quirks = 0, idma_addr = 0;
1254 struct device_node *np = pdev->dev.of_node;
1255 const struct samsung_i2s_dai_data *i2s_dai_data;
1256 int ret;
1257
1258 if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node)
1259 i2s_dai_data = of_device_get_match_data(&pdev->dev);
1260 else
1261 i2s_dai_data = (struct samsung_i2s_dai_data *)
1262 platform_get_device_id(pdev)->driver_data;
1263
1264 pri_dai = i2s_alloc_dai(pdev, i2s_dai_data, false);
1265 if (!pri_dai) {
1266 dev_err(&pdev->dev, "Unable to alloc I2S_pri\n");
1267 return -ENOMEM;
1268 }
1269
1270 spin_lock_init(&pri_dai->spinlock);
1271 pri_dai->lock = &pri_dai->spinlock;
1272
1273 if (!np) {
1274 if (i2s_pdata == NULL) {
1275 dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n");
1276 return -EINVAL;
1277 }
1278
1279 pri_dai->dma_playback.filter_data = i2s_pdata->dma_playback;
1280 pri_dai->dma_capture.filter_data = i2s_pdata->dma_capture;
1281 pri_dai->filter = i2s_pdata->dma_filter;
1282
1283 quirks = i2s_pdata->type.quirks;
1284 idma_addr = i2s_pdata->type.idma_addr;
1285 } else {
1286 quirks = i2s_dai_data->quirks;
1287 if (of_property_read_u32(np, "samsung,idma-addr",
1288 &idma_addr)) {
1289 if (quirks & QUIRK_SUPPORTS_IDMA) {
1290 dev_info(&pdev->dev, "idma address is not"\
1291 "specified");
1292 }
1293 }
1294 }
1295 quirks &= ~(QUIRK_SEC_DAI | QUIRK_SUPPORTS_IDMA);
1296
1297 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1298 pri_dai->addr = devm_ioremap_resource(&pdev->dev, res);
1299 if (IS_ERR(pri_dai->addr))
1300 return PTR_ERR(pri_dai->addr);
1301
1302 regs_base = res->start;
1303
1304 pri_dai->clk = devm_clk_get(&pdev->dev, "iis");
1305 if (IS_ERR(pri_dai->clk)) {
1306 dev_err(&pdev->dev, "Failed to get iis clock\n");
1307 return PTR_ERR(pri_dai->clk);
1308 }
1309
1310 ret = clk_prepare_enable(pri_dai->clk);
1311 if (ret != 0) {
1312 dev_err(&pdev->dev, "failed to enable clock: %d\n", ret);
1313 return ret;
1314 }
1315 pri_dai->dma_playback.addr = regs_base + I2STXD;
1316 pri_dai->dma_capture.addr = regs_base + I2SRXD;
1317 pri_dai->dma_playback.chan_name = "tx";
1318 pri_dai->dma_capture.chan_name = "rx";
1319 pri_dai->dma_playback.addr_width = 4;
1320 pri_dai->dma_capture.addr_width = 4;
1321 pri_dai->quirks = quirks;
1322 pri_dai->variant_regs = i2s_dai_data->i2s_variant_regs;
1323
1324 if (quirks & QUIRK_PRI_6CHAN)
1325 pri_dai->i2s_dai_drv.playback.channels_max = 6;
1326
1327 ret = samsung_asoc_dma_platform_register(&pdev->dev, pri_dai->filter,
1328 NULL, NULL);
1329 if (ret < 0)
1330 goto err_disable_clk;
1331
1332 ret = devm_snd_soc_register_component(&pdev->dev,
1333 &samsung_i2s_component,
1334 &pri_dai->i2s_dai_drv, 1);
1335 if (ret < 0)
1336 goto err_disable_clk;
1337
1338 if (quirks & QUIRK_SEC_DAI) {
1339 sec_dai = i2s_alloc_dai(pdev, i2s_dai_data, true);
1340 if (!sec_dai) {
1341 dev_err(&pdev->dev, "Unable to alloc I2S_sec\n");
1342 ret = -ENOMEM;
1343 goto err_disable_clk;
1344 }
1345
1346 sec_dai->lock = &pri_dai->spinlock;
1347 sec_dai->variant_regs = pri_dai->variant_regs;
1348 sec_dai->dma_playback.addr = regs_base + I2STXDS;
1349 sec_dai->dma_playback.chan_name = "tx-sec";
1350
1351 if (!np) {
1352 sec_dai->dma_playback.filter_data = i2s_pdata->dma_play_sec;
1353 sec_dai->filter = i2s_pdata->dma_filter;
1354 }
1355
1356 sec_dai->dma_playback.addr_width = 4;
1357 sec_dai->addr = pri_dai->addr;
1358 sec_dai->clk = pri_dai->clk;
1359 sec_dai->quirks = quirks;
1360 sec_dai->idma_playback.addr = idma_addr;
1361 sec_dai->pri_dai = pri_dai;
1362 pri_dai->sec_dai = sec_dai;
1363
1364 ret = samsung_asoc_dma_platform_register(&pdev->dev,
1365 sec_dai->filter, "tx-sec", NULL);
1366 if (ret < 0)
1367 goto err_disable_clk;
1368
1369 ret = devm_snd_soc_register_component(&pdev->dev,
1370 &samsung_i2s_component,
1371 &sec_dai->i2s_dai_drv, 1);
1372 if (ret < 0)
1373 goto err_disable_clk;
1374 }
1375
1376 if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
1377 dev_err(&pdev->dev, "Unable to configure gpio\n");
1378 ret = -EINVAL;
1379 goto err_disable_clk;
1380 }
1381
1382 dev_set_drvdata(&pdev->dev, pri_dai);
1383
1384 pm_runtime_set_active(&pdev->dev);
1385 pm_runtime_enable(&pdev->dev);
1386
1387 ret = i2s_register_clock_provider(pdev);
1388 if (!ret)
1389 return 0;
1390
1391 pm_runtime_disable(&pdev->dev);
1392 err_disable_clk:
1393 clk_disable_unprepare(pri_dai->clk);
1394 return ret;
1395 }
1396
1397 static int samsung_i2s_remove(struct platform_device *pdev)
1398 {
1399 struct i2s_dai *pri_dai;
1400
1401 pri_dai = dev_get_drvdata(&pdev->dev);
1402
1403 pm_runtime_get_sync(&pdev->dev);
1404 pm_runtime_disable(&pdev->dev);
1405
1406 i2s_unregister_clock_provider(pdev);
1407 clk_disable_unprepare(pri_dai->clk);
1408 pm_runtime_put_noidle(&pdev->dev);
1409
1410 return 0;
1411 }
1412
1413 static const struct samsung_i2s_variant_regs i2sv3_regs = {
1414 .bfs_off = 1,
1415 .rfs_off = 3,
1416 .sdf_off = 5,
1417 .txr_off = 8,
1418 .rclksrc_off = 10,
1419 .mss_off = 11,
1420 .cdclkcon_off = 12,
1421 .lrp_off = 7,
1422 .bfs_mask = 0x3,
1423 .rfs_mask = 0x3,
1424 .ftx0cnt_off = 8,
1425 };
1426
1427 static const struct samsung_i2s_variant_regs i2sv6_regs = {
1428 .bfs_off = 0,
1429 .rfs_off = 4,
1430 .sdf_off = 6,
1431 .txr_off = 8,
1432 .rclksrc_off = 10,
1433 .mss_off = 11,
1434 .cdclkcon_off = 12,
1435 .lrp_off = 15,
1436 .bfs_mask = 0xf,
1437 .rfs_mask = 0x3,
1438 .ftx0cnt_off = 8,
1439 };
1440
1441 static const struct samsung_i2s_variant_regs i2sv7_regs = {
1442 .bfs_off = 0,
1443 .rfs_off = 4,
1444 .sdf_off = 7,
1445 .txr_off = 9,
1446 .rclksrc_off = 11,
1447 .mss_off = 12,
1448 .cdclkcon_off = 22,
1449 .lrp_off = 15,
1450 .bfs_mask = 0xf,
1451 .rfs_mask = 0x7,
1452 .ftx0cnt_off = 0,
1453 };
1454
1455 static const struct samsung_i2s_variant_regs i2sv5_i2s1_regs = {
1456 .bfs_off = 0,
1457 .rfs_off = 3,
1458 .sdf_off = 6,
1459 .txr_off = 8,
1460 .rclksrc_off = 10,
1461 .mss_off = 11,
1462 .cdclkcon_off = 12,
1463 .lrp_off = 15,
1464 .bfs_mask = 0x7,
1465 .rfs_mask = 0x7,
1466 .ftx0cnt_off = 8,
1467 };
1468
1469 static const struct samsung_i2s_dai_data i2sv3_dai_type = {
1470 .quirks = QUIRK_NO_MUXPSR,
1471 .pcm_rates = SNDRV_PCM_RATE_8000_96000,
1472 .i2s_variant_regs = &i2sv3_regs,
1473 };
1474
1475 static const struct samsung_i2s_dai_data i2sv5_dai_type = {
1476 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1477 QUIRK_SUPPORTS_IDMA,
1478 .pcm_rates = SNDRV_PCM_RATE_8000_96000,
1479 .i2s_variant_regs = &i2sv3_regs,
1480 };
1481
1482 static const struct samsung_i2s_dai_data i2sv6_dai_type = {
1483 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1484 QUIRK_SUPPORTS_TDM | QUIRK_SUPPORTS_IDMA,
1485 .pcm_rates = SNDRV_PCM_RATE_8000_96000,
1486 .i2s_variant_regs = &i2sv6_regs,
1487 };
1488
1489 static const struct samsung_i2s_dai_data i2sv7_dai_type = {
1490 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1491 QUIRK_SUPPORTS_TDM,
1492 .pcm_rates = SNDRV_PCM_RATE_8000_192000,
1493 .i2s_variant_regs = &i2sv7_regs,
1494 };
1495
1496 static const struct samsung_i2s_dai_data i2sv5_dai_type_i2s1 = {
1497 .quirks = QUIRK_PRI_6CHAN | QUIRK_NEED_RSTCLR,
1498 .pcm_rates = SNDRV_PCM_RATE_8000_96000,
1499 .i2s_variant_regs = &i2sv5_i2s1_regs,
1500 };
1501
1502 static const struct platform_device_id samsung_i2s_driver_ids[] = {
1503 {
1504 .name = "samsung-i2s",
1505 .driver_data = (kernel_ulong_t)&i2sv3_dai_type,
1506 },
1507 {},
1508 };
1509 MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids);
1510
1511 #ifdef CONFIG_OF
1512 static const struct of_device_id exynos_i2s_match[] = {
1513 {
1514 .compatible = "samsung,s3c6410-i2s",
1515 .data = &i2sv3_dai_type,
1516 }, {
1517 .compatible = "samsung,s5pv210-i2s",
1518 .data = &i2sv5_dai_type,
1519 }, {
1520 .compatible = "samsung,exynos5420-i2s",
1521 .data = &i2sv6_dai_type,
1522 }, {
1523 .compatible = "samsung,exynos7-i2s",
1524 .data = &i2sv7_dai_type,
1525 }, {
1526 .compatible = "samsung,exynos7-i2s1",
1527 .data = &i2sv5_dai_type_i2s1,
1528 },
1529 {},
1530 };
1531 MODULE_DEVICE_TABLE(of, exynos_i2s_match);
1532 #endif
1533
1534 static const struct dev_pm_ops samsung_i2s_pm = {
1535 SET_RUNTIME_PM_OPS(i2s_runtime_suspend,
1536 i2s_runtime_resume, NULL)
1537 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1538 pm_runtime_force_resume)
1539 };
1540
1541 static struct platform_driver samsung_i2s_driver = {
1542 .probe = samsung_i2s_probe,
1543 .remove = samsung_i2s_remove,
1544 .id_table = samsung_i2s_driver_ids,
1545 .driver = {
1546 .name = "samsung-i2s",
1547 .of_match_table = of_match_ptr(exynos_i2s_match),
1548 .pm = &samsung_i2s_pm,
1549 },
1550 };
1551
1552 module_platform_driver(samsung_i2s_driver);
1553
1554 /* Module information */
1555 MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>");
1556 MODULE_DESCRIPTION("Samsung I2S Interface");
1557 MODULE_ALIAS("platform:samsung-i2s");
1558 MODULE_LICENSE("GPL");
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