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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux...
[linux/fpc-iii.git] / sound / soc / samsung / i2s.c
blob70a2559b63f9050bcbb86049717518d022463e2f
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_gpio.h>
22 #include <linux/pm_runtime.h>
23
24 #include <sound/soc.h>
25 #include <sound/pcm_params.h>
26
27 #include <linux/platform_data/asoc-s3c.h>
28
29 #include "dma.h"
30 #include "idma.h"
31 #include "i2s.h"
32 #include "i2s-regs.h"
33
34 #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
35
36 enum samsung_dai_type {
37 TYPE_PRI,
38 TYPE_SEC,
39 };
40
41 struct samsung_i2s_variant_regs {
42 unsigned int bfs_off;
43 unsigned int rfs_off;
44 unsigned int sdf_off;
45 unsigned int txr_off;
46 unsigned int rclksrc_off;
47 unsigned int mss_off;
48 unsigned int cdclkcon_off;
49 unsigned int lrp_off;
50 unsigned int bfs_mask;
51 unsigned int rfs_mask;
52 unsigned int ftx0cnt_off;
53 };
54
55 struct samsung_i2s_dai_data {
56 int dai_type;
57 u32 quirks;
58 const struct samsung_i2s_variant_regs *i2s_variant_regs;
59 };
60
61 struct i2s_dai {
62 /* Platform device for this DAI */
63 struct platform_device *pdev;
64 /* Memory mapped SFR region */
65 void __iomem *addr;
66 /* Rate of RCLK source clock */
67 unsigned long rclk_srcrate;
68 /* Frame Clock */
69 unsigned frmclk;
70 /*
71 * Specifically requested RCLK,BCLK by MACHINE Driver.
72 * 0 indicates CPU driver is free to choose any value.
73 */
74 unsigned rfs, bfs;
75 /* I2S Controller's core clock */
76 struct clk *clk;
77 /* Clock for generating I2S signals */
78 struct clk *op_clk;
79 /* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */
80 struct i2s_dai *pri_dai;
81 /* Pointer to the Secondary_Fifo if it has one, NULL otherwise */
82 struct i2s_dai *sec_dai;
83 #define DAI_OPENED (1 << 0) /* Dai is opened */
84 #define DAI_MANAGER (1 << 1) /* Dai is the manager */
85 unsigned mode;
86 /* Driver for this DAI */
87 struct snd_soc_dai_driver i2s_dai_drv;
88 /* DMA parameters */
89 struct s3c_dma_params dma_playback;
90 struct s3c_dma_params dma_capture;
91 struct s3c_dma_params idma_playback;
92 dma_filter_fn filter;
93 u32 quirks;
94 u32 suspend_i2smod;
95 u32 suspend_i2scon;
96 u32 suspend_i2spsr;
97 const struct samsung_i2s_variant_regs *variant_regs;
98
99 /* Spinlock protecting access to the device's registers */
100 spinlock_t spinlock;
101 spinlock_t *lock;
102
103 /* Below fields are only valid if this is the primary FIFO */
104 struct clk *clk_table[3];
105 struct clk_onecell_data clk_data;
106 };
107
108 /* Lock for cross i/f checks */
109 static DEFINE_SPINLOCK(lock);
110
111 /* If this is the 'overlay' stereo DAI */
112 static inline bool is_secondary(struct i2s_dai *i2s)
113 {
114 return i2s->pri_dai ? true : false;
115 }
116
117 /* If operating in SoC-Slave mode */
118 static inline bool is_slave(struct i2s_dai *i2s)
119 {
120 u32 mod = readl(i2s->addr + I2SMOD);
121 return (mod & (1 << i2s->variant_regs->mss_off)) ? true : false;
122 }
123
124 /* If this interface of the controller is transmitting data */
125 static inline bool tx_active(struct i2s_dai *i2s)
126 {
127 u32 active;
128
129 if (!i2s)
130 return false;
131
132 active = readl(i2s->addr + I2SCON);
133
134 if (is_secondary(i2s))
135 active &= CON_TXSDMA_ACTIVE;
136 else
137 active &= CON_TXDMA_ACTIVE;
138
139 return active ? true : false;
140 }
141
142 /* Return pointer to the other DAI */
143 static inline struct i2s_dai *get_other_dai(struct i2s_dai *i2s)
144 {
145 return i2s->pri_dai ? : i2s->sec_dai;
146 }
147
148 /* If the other interface of the controller is transmitting data */
149 static inline bool other_tx_active(struct i2s_dai *i2s)
150 {
151 struct i2s_dai *other = get_other_dai(i2s);
152
153 return tx_active(other);
154 }
155
156 /* If any interface of the controller is transmitting data */
157 static inline bool any_tx_active(struct i2s_dai *i2s)
158 {
159 return tx_active(i2s) || other_tx_active(i2s);
160 }
161
162 /* If this interface of the controller is receiving data */
163 static inline bool rx_active(struct i2s_dai *i2s)
164 {
165 u32 active;
166
167 if (!i2s)
168 return false;
169
170 active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE;
171
172 return active ? true : false;
173 }
174
175 /* If the other interface of the controller is receiving data */
176 static inline bool other_rx_active(struct i2s_dai *i2s)
177 {
178 struct i2s_dai *other = get_other_dai(i2s);
179
180 return rx_active(other);
181 }
182
183 /* If any interface of the controller is receiving data */
184 static inline bool any_rx_active(struct i2s_dai *i2s)
185 {
186 return rx_active(i2s) || other_rx_active(i2s);
187 }
188
189 /* If the other DAI is transmitting or receiving data */
190 static inline bool other_active(struct i2s_dai *i2s)
191 {
192 return other_rx_active(i2s) || other_tx_active(i2s);
193 }
194
195 /* If this DAI is transmitting or receiving data */
196 static inline bool this_active(struct i2s_dai *i2s)
197 {
198 return tx_active(i2s) || rx_active(i2s);
199 }
200
201 /* If the controller is active anyway */
202 static inline bool any_active(struct i2s_dai *i2s)
203 {
204 return this_active(i2s) || other_active(i2s);
205 }
206
207 static inline struct i2s_dai *to_info(struct snd_soc_dai *dai)
208 {
209 return snd_soc_dai_get_drvdata(dai);
210 }
211
212 static inline bool is_opened(struct i2s_dai *i2s)
213 {
214 if (i2s && (i2s->mode & DAI_OPENED))
215 return true;
216 else
217 return false;
218 }
219
220 static inline bool is_manager(struct i2s_dai *i2s)
221 {
222 if (is_opened(i2s) && (i2s->mode & DAI_MANAGER))
223 return true;
224 else
225 return false;
226 }
227
228 /* Read RCLK of I2S (in multiples of LRCLK) */
229 static inline unsigned get_rfs(struct i2s_dai *i2s)
230 {
231 u32 rfs;
232 rfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->rfs_off;
233 rfs &= i2s->variant_regs->rfs_mask;
234
235 switch (rfs) {
236 case 7: return 192;
237 case 6: return 96;
238 case 5: return 128;
239 case 4: return 64;
240 case 3: return 768;
241 case 2: return 384;
242 case 1: return 512;
243 default: return 256;
244 }
245 }
246
247 /* Write RCLK of I2S (in multiples of LRCLK) */
248 static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
249 {
250 u32 mod = readl(i2s->addr + I2SMOD);
251 int rfs_shift = i2s->variant_regs->rfs_off;
252
253 mod &= ~(i2s->variant_regs->rfs_mask << rfs_shift);
254
255 switch (rfs) {
256 case 192:
257 mod |= (EXYNOS7_MOD_RCLK_192FS << rfs_shift);
258 break;
259 case 96:
260 mod |= (EXYNOS7_MOD_RCLK_96FS << rfs_shift);
261 break;
262 case 128:
263 mod |= (EXYNOS7_MOD_RCLK_128FS << rfs_shift);
264 break;
265 case 64:
266 mod |= (EXYNOS7_MOD_RCLK_64FS << rfs_shift);
267 break;
268 case 768:
269 mod |= (MOD_RCLK_768FS << rfs_shift);
270 break;
271 case 512:
272 mod |= (MOD_RCLK_512FS << rfs_shift);
273 break;
274 case 384:
275 mod |= (MOD_RCLK_384FS << rfs_shift);
276 break;
277 default:
278 mod |= (MOD_RCLK_256FS << rfs_shift);
279 break;
280 }
281
282 writel(mod, i2s->addr + I2SMOD);
283 }
284
285 /* Read Bit-Clock of I2S (in multiples of LRCLK) */
286 static inline unsigned get_bfs(struct i2s_dai *i2s)
287 {
288 u32 bfs;
289 bfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->bfs_off;
290 bfs &= i2s->variant_regs->bfs_mask;
291
292 switch (bfs) {
293 case 8: return 256;
294 case 7: return 192;
295 case 6: return 128;
296 case 5: return 96;
297 case 4: return 64;
298 case 3: return 24;
299 case 2: return 16;
300 case 1: return 48;
301 default: return 32;
302 }
303 }
304
305 /* Write Bit-Clock of I2S (in multiples of LRCLK) */
306 static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
307 {
308 u32 mod = readl(i2s->addr + I2SMOD);
309 int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM;
310 int bfs_shift = i2s->variant_regs->bfs_off;
311
312 /* Non-TDM I2S controllers do not support BCLK > 48 * FS */
313 if (!tdm && bfs > 48) {
314 dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n");
315 return;
316 }
317
318 mod &= ~(i2s->variant_regs->bfs_mask << bfs_shift);
319
320 switch (bfs) {
321 case 48:
322 mod |= (MOD_BCLK_48FS << bfs_shift);
323 break;
324 case 32:
325 mod |= (MOD_BCLK_32FS << bfs_shift);
326 break;
327 case 24:
328 mod |= (MOD_BCLK_24FS << bfs_shift);
329 break;
330 case 16:
331 mod |= (MOD_BCLK_16FS << bfs_shift);
332 break;
333 case 64:
334 mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift);
335 break;
336 case 96:
337 mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift);
338 break;
339 case 128:
340 mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift);
341 break;
342 case 192:
343 mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift);
344 break;
345 case 256:
346 mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift);
347 break;
348 default:
349 dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n");
350 return;
351 }
352
353 writel(mod, i2s->addr + I2SMOD);
354 }
355
356 /* Sample-Size */
357 static inline int get_blc(struct i2s_dai *i2s)
358 {
359 int blc = readl(i2s->addr + I2SMOD);
360
361 blc = (blc >> 13) & 0x3;
362
363 switch (blc) {
364 case 2: return 24;
365 case 1: return 8;
366 default: return 16;
367 }
368 }
369
370 /* TX Channel Control */
371 static void i2s_txctrl(struct i2s_dai *i2s, int on)
372 {
373 void __iomem *addr = i2s->addr;
374 int txr_off = i2s->variant_regs->txr_off;
375 u32 con = readl(addr + I2SCON);
376 u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
377
378 if (on) {
379 con |= CON_ACTIVE;
380 con &= ~CON_TXCH_PAUSE;
381
382 if (is_secondary(i2s)) {
383 con |= CON_TXSDMA_ACTIVE;
384 con &= ~CON_TXSDMA_PAUSE;
385 } else {
386 con |= CON_TXDMA_ACTIVE;
387 con &= ~CON_TXDMA_PAUSE;
388 }
389
390 if (any_rx_active(i2s))
391 mod |= 2 << txr_off;
392 else
393 mod |= 0 << txr_off;
394 } else {
395 if (is_secondary(i2s)) {
396 con |= CON_TXSDMA_PAUSE;
397 con &= ~CON_TXSDMA_ACTIVE;
398 } else {
399 con |= CON_TXDMA_PAUSE;
400 con &= ~CON_TXDMA_ACTIVE;
401 }
402
403 if (other_tx_active(i2s)) {
404 writel(con, addr + I2SCON);
405 return;
406 }
407
408 con |= CON_TXCH_PAUSE;
409
410 if (any_rx_active(i2s))
411 mod |= 1 << txr_off;
412 else
413 con &= ~CON_ACTIVE;
414 }
415
416 writel(mod, addr + I2SMOD);
417 writel(con, addr + I2SCON);
418 }
419
420 /* RX Channel Control */
421 static void i2s_rxctrl(struct i2s_dai *i2s, int on)
422 {
423 void __iomem *addr = i2s->addr;
424 int txr_off = i2s->variant_regs->txr_off;
425 u32 con = readl(addr + I2SCON);
426 u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
427
428 if (on) {
429 con |= CON_RXDMA_ACTIVE | CON_ACTIVE;
430 con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE);
431
432 if (any_tx_active(i2s))
433 mod |= 2 << txr_off;
434 else
435 mod |= 1 << txr_off;
436 } else {
437 con |= CON_RXDMA_PAUSE | CON_RXCH_PAUSE;
438 con &= ~CON_RXDMA_ACTIVE;
439
440 if (any_tx_active(i2s))
441 mod |= 0 << txr_off;
442 else
443 con &= ~CON_ACTIVE;
444 }
445
446 writel(mod, addr + I2SMOD);
447 writel(con, addr + I2SCON);
448 }
449
450 /* Flush FIFO of an interface */
451 static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush)
452 {
453 void __iomem *fic;
454 u32 val;
455
456 if (!i2s)
457 return;
458
459 if (is_secondary(i2s))
460 fic = i2s->addr + I2SFICS;
461 else
462 fic = i2s->addr + I2SFIC;
463
464 /* Flush the FIFO */
465 writel(readl(fic) | flush, fic);
466
467 /* Be patient */
468 val = msecs_to_loops(1) / 1000; /* 1 usec */
469 while (--val)
470 cpu_relax();
471
472 writel(readl(fic) & ~flush, fic);
473 }
474
475 static int i2s_set_sysclk(struct snd_soc_dai *dai,
476 int clk_id, unsigned int rfs, int dir)
477 {
478 struct i2s_dai *i2s = to_info(dai);
479 struct i2s_dai *other = get_other_dai(i2s);
480 const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs;
481 unsigned int cdcon_mask = 1 << i2s_regs->cdclkcon_off;
482 unsigned int rsrc_mask = 1 << i2s_regs->rclksrc_off;
483 u32 mod, mask, val = 0;
484 unsigned long flags;
485
486 spin_lock_irqsave(i2s->lock, flags);
487 mod = readl(i2s->addr + I2SMOD);
488 spin_unlock_irqrestore(i2s->lock, flags);
489
490 switch (clk_id) {
491 case SAMSUNG_I2S_OPCLK:
492 mask = MOD_OPCLK_MASK;
493 val = dir;
494 break;
495 case SAMSUNG_I2S_CDCLK:
496 mask = 1 << i2s_regs->cdclkcon_off;
497 /* Shouldn't matter in GATING(CLOCK_IN) mode */
498 if (dir == SND_SOC_CLOCK_IN)
499 rfs = 0;
500
501 if ((rfs && other && other->rfs && (other->rfs != rfs)) ||
502 (any_active(i2s) &&
503 (((dir == SND_SOC_CLOCK_IN)
504 && !(mod & cdcon_mask)) ||
505 ((dir == SND_SOC_CLOCK_OUT)
506 && (mod & cdcon_mask))))) {
507 dev_err(&i2s->pdev->dev,
508 "%s:%d Other DAI busy\n", __func__, __LINE__);
509 return -EAGAIN;
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 return 0;
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 return PTR_ERR(i2s->op_clk);
550
551 clk_prepare_enable(i2s->op_clk);
552 i2s->rclk_srcrate = clk_get_rate(i2s->op_clk);
553
554 /* Over-ride the other's */
555 if (other) {
556 other->op_clk = i2s->op_clk;
557 other->rclk_srcrate = i2s->rclk_srcrate;
558 }
559 } else if ((!clk_id && (mod & rsrc_mask))
560 || (clk_id && !(mod & rsrc_mask))) {
561 dev_err(&i2s->pdev->dev,
562 "%s:%d Other DAI busy\n", __func__, __LINE__);
563 return -EAGAIN;
564 } else {
565 /* Call can't be on the active DAI */
566 i2s->op_clk = other->op_clk;
567 i2s->rclk_srcrate = other->rclk_srcrate;
568 return 0;
569 }
570
571 if (clk_id == 1)
572 val = 1 << i2s_regs->rclksrc_off;
573 break;
574 default:
575 dev_err(&i2s->pdev->dev, "We don't serve that!\n");
576 return -EINVAL;
577 }
578
579 spin_lock_irqsave(i2s->lock, flags);
580 mod = readl(i2s->addr + I2SMOD);
581 mod = (mod & ~mask) | val;
582 writel(mod, i2s->addr + I2SMOD);
583 spin_unlock_irqrestore(i2s->lock, flags);
584
585 return 0;
586 }
587
588 static int i2s_set_fmt(struct snd_soc_dai *dai,
589 unsigned int fmt)
590 {
591 struct i2s_dai *i2s = to_info(dai);
592 int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave;
593 u32 mod, tmp = 0;
594 unsigned long flags;
595
596 lrp_shift = i2s->variant_regs->lrp_off;
597 sdf_shift = i2s->variant_regs->sdf_off;
598 mod_slave = 1 << i2s->variant_regs->mss_off;
599
600 sdf_mask = MOD_SDF_MASK << sdf_shift;
601 lrp_rlow = MOD_LR_RLOW << lrp_shift;
602
603 /* Format is priority */
604 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
605 case SND_SOC_DAIFMT_RIGHT_J:
606 tmp |= lrp_rlow;
607 tmp |= (MOD_SDF_MSB << sdf_shift);
608 break;
609 case SND_SOC_DAIFMT_LEFT_J:
610 tmp |= lrp_rlow;
611 tmp |= (MOD_SDF_LSB << sdf_shift);
612 break;
613 case SND_SOC_DAIFMT_I2S:
614 tmp |= (MOD_SDF_IIS << sdf_shift);
615 break;
616 default:
617 dev_err(&i2s->pdev->dev, "Format not supported\n");
618 return -EINVAL;
619 }
620
621 /*
622 * INV flag is relative to the FORMAT flag - if set it simply
623 * flips the polarity specified by the Standard
624 */
625 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
626 case SND_SOC_DAIFMT_NB_NF:
627 break;
628 case SND_SOC_DAIFMT_NB_IF:
629 if (tmp & lrp_rlow)
630 tmp &= ~lrp_rlow;
631 else
632 tmp |= lrp_rlow;
633 break;
634 default:
635 dev_err(&i2s->pdev->dev, "Polarity not supported\n");
636 return -EINVAL;
637 }
638
639 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
640 case SND_SOC_DAIFMT_CBM_CFM:
641 tmp |= mod_slave;
642 break;
643 case SND_SOC_DAIFMT_CBS_CFS:
644 /* Set default source clock in Master mode */
645 if (i2s->rclk_srcrate == 0)
646 i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0,
647 0, SND_SOC_CLOCK_IN);
648 break;
649 default:
650 dev_err(&i2s->pdev->dev, "master/slave format not supported\n");
651 return -EINVAL;
652 }
653
654 spin_lock_irqsave(i2s->lock, flags);
655 mod = readl(i2s->addr + I2SMOD);
656 /*
657 * Don't change the I2S mode if any controller is active on this
658 * channel.
659 */
660 if (any_active(i2s) &&
661 ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) {
662 spin_unlock_irqrestore(i2s->lock, flags);
663 dev_err(&i2s->pdev->dev,
664 "%s:%d Other DAI busy\n", __func__, __LINE__);
665 return -EAGAIN;
666 }
667
668 mod &= ~(sdf_mask | lrp_rlow | mod_slave);
669 mod |= tmp;
670 writel(mod, i2s->addr + I2SMOD);
671 spin_unlock_irqrestore(i2s->lock, flags);
672
673 return 0;
674 }
675
676 static int i2s_hw_params(struct snd_pcm_substream *substream,
677 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
678 {
679 struct i2s_dai *i2s = to_info(dai);
680 u32 mod, mask = 0, val = 0;
681 unsigned long flags;
682
683 if (!is_secondary(i2s))
684 mask |= (MOD_DC2_EN | MOD_DC1_EN);
685
686 switch (params_channels(params)) {
687 case 6:
688 val |= MOD_DC2_EN;
689 case 4:
690 val |= MOD_DC1_EN;
691 break;
692 case 2:
693 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
694 i2s->dma_playback.dma_size = 4;
695 else
696 i2s->dma_capture.dma_size = 4;
697 break;
698 case 1:
699 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
700 i2s->dma_playback.dma_size = 2;
701 else
702 i2s->dma_capture.dma_size = 2;
703
704 break;
705 default:
706 dev_err(&i2s->pdev->dev, "%d channels not supported\n",
707 params_channels(params));
708 return -EINVAL;
709 }
710
711 if (is_secondary(i2s))
712 mask |= MOD_BLCS_MASK;
713 else
714 mask |= MOD_BLCP_MASK;
715
716 if (is_manager(i2s))
717 mask |= MOD_BLC_MASK;
718
719 switch (params_width(params)) {
720 case 8:
721 if (is_secondary(i2s))
722 val |= MOD_BLCS_8BIT;
723 else
724 val |= MOD_BLCP_8BIT;
725 if (is_manager(i2s))
726 val |= MOD_BLC_8BIT;
727 break;
728 case 16:
729 if (is_secondary(i2s))
730 val |= MOD_BLCS_16BIT;
731 else
732 val |= MOD_BLCP_16BIT;
733 if (is_manager(i2s))
734 val |= MOD_BLC_16BIT;
735 break;
736 case 24:
737 if (is_secondary(i2s))
738 val |= MOD_BLCS_24BIT;
739 else
740 val |= MOD_BLCP_24BIT;
741 if (is_manager(i2s))
742 val |= MOD_BLC_24BIT;
743 break;
744 default:
745 dev_err(&i2s->pdev->dev, "Format(%d) not supported\n",
746 params_format(params));
747 return -EINVAL;
748 }
749
750 spin_lock_irqsave(i2s->lock, flags);
751 mod = readl(i2s->addr + I2SMOD);
752 mod = (mod & ~mask) | val;
753 writel(mod, i2s->addr + I2SMOD);
754 spin_unlock_irqrestore(i2s->lock, flags);
755
756 samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
757
758 i2s->frmclk = params_rate(params);
759
760 return 0;
761 }
762
763 /* We set constraints on the substream acc to the version of I2S */
764 static int i2s_startup(struct snd_pcm_substream *substream,
765 struct snd_soc_dai *dai)
766 {
767 struct i2s_dai *i2s = to_info(dai);
768 struct i2s_dai *other = get_other_dai(i2s);
769 unsigned long flags;
770
771 spin_lock_irqsave(&lock, flags);
772
773 i2s->mode |= DAI_OPENED;
774
775 if (is_manager(other))
776 i2s->mode &= ~DAI_MANAGER;
777 else
778 i2s->mode |= DAI_MANAGER;
779
780 if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR))
781 writel(CON_RSTCLR, i2s->addr + I2SCON);
782
783 spin_unlock_irqrestore(&lock, flags);
784
785 return 0;
786 }
787
788 static void i2s_shutdown(struct snd_pcm_substream *substream,
789 struct snd_soc_dai *dai)
790 {
791 struct i2s_dai *i2s = to_info(dai);
792 struct i2s_dai *other = get_other_dai(i2s);
793 unsigned long flags;
794
795 spin_lock_irqsave(&lock, flags);
796
797 i2s->mode &= ~DAI_OPENED;
798 i2s->mode &= ~DAI_MANAGER;
799
800 if (is_opened(other))
801 other->mode |= DAI_MANAGER;
802
803 /* Reset any constraint on RFS and BFS */
804 i2s->rfs = 0;
805 i2s->bfs = 0;
806
807 spin_unlock_irqrestore(&lock, flags);
808 }
809
810 static int config_setup(struct i2s_dai *i2s)
811 {
812 struct i2s_dai *other = get_other_dai(i2s);
813 unsigned rfs, bfs, blc;
814 u32 psr;
815
816 blc = get_blc(i2s);
817
818 bfs = i2s->bfs;
819
820 if (!bfs && other)
821 bfs = other->bfs;
822
823 /* Select least possible multiple(2) if no constraint set */
824 if (!bfs)
825 bfs = blc * 2;
826
827 rfs = i2s->rfs;
828
829 if (!rfs && other)
830 rfs = other->rfs;
831
832 if ((rfs == 256 || rfs == 512) && (blc == 24)) {
833 dev_err(&i2s->pdev->dev,
834 "%d-RFS not supported for 24-blc\n", rfs);
835 return -EINVAL;
836 }
837
838 if (!rfs) {
839 if (bfs == 16 || bfs == 32)
840 rfs = 256;
841 else
842 rfs = 384;
843 }
844
845 /* If already setup and running */
846 if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) {
847 dev_err(&i2s->pdev->dev,
848 "%s:%d Other DAI busy\n", __func__, __LINE__);
849 return -EAGAIN;
850 }
851
852 set_bfs(i2s, bfs);
853 set_rfs(i2s, rfs);
854
855 /* Don't bother with PSR in Slave mode */
856 if (is_slave(i2s))
857 return 0;
858
859 if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
860 psr = i2s->rclk_srcrate / i2s->frmclk / rfs;
861 writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR);
862 dev_dbg(&i2s->pdev->dev,
863 "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n",
864 i2s->rclk_srcrate, psr, rfs, bfs);
865 }
866
867 return 0;
868 }
869
870 static int i2s_trigger(struct snd_pcm_substream *substream,
871 int cmd, struct snd_soc_dai *dai)
872 {
873 int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
874 struct snd_soc_pcm_runtime *rtd = substream->private_data;
875 struct i2s_dai *i2s = to_info(rtd->cpu_dai);
876 unsigned long flags;
877
878 switch (cmd) {
879 case SNDRV_PCM_TRIGGER_START:
880 case SNDRV_PCM_TRIGGER_RESUME:
881 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
882 spin_lock_irqsave(i2s->lock, flags);
883
884 if (config_setup(i2s)) {
885 spin_unlock_irqrestore(i2s->lock, flags);
886 return -EINVAL;
887 }
888
889 if (capture)
890 i2s_rxctrl(i2s, 1);
891 else
892 i2s_txctrl(i2s, 1);
893
894 spin_unlock_irqrestore(i2s->lock, flags);
895 break;
896 case SNDRV_PCM_TRIGGER_STOP:
897 case SNDRV_PCM_TRIGGER_SUSPEND:
898 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
899 spin_lock_irqsave(i2s->lock, flags);
900
901 if (capture) {
902 i2s_rxctrl(i2s, 0);
903 i2s_fifo(i2s, FIC_RXFLUSH);
904 } else {
905 i2s_txctrl(i2s, 0);
906 i2s_fifo(i2s, FIC_TXFLUSH);
907 }
908
909 spin_unlock_irqrestore(i2s->lock, flags);
910 break;
911 }
912
913 return 0;
914 }
915
916 static int i2s_set_clkdiv(struct snd_soc_dai *dai,
917 int div_id, int div)
918 {
919 struct i2s_dai *i2s = to_info(dai);
920 struct i2s_dai *other = get_other_dai(i2s);
921
922 switch (div_id) {
923 case SAMSUNG_I2S_DIV_BCLK:
924 if ((any_active(i2s) && div && (get_bfs(i2s) != div))
925 || (other && other->bfs && (other->bfs != div))) {
926 dev_err(&i2s->pdev->dev,
927 "%s:%d Other DAI busy\n", __func__, __LINE__);
928 return -EAGAIN;
929 }
930 i2s->bfs = div;
931 break;
932 default:
933 dev_err(&i2s->pdev->dev,
934 "Invalid clock divider(%d)\n", div_id);
935 return -EINVAL;
936 }
937
938 return 0;
939 }
940
941 static snd_pcm_sframes_t
942 i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
943 {
944 struct i2s_dai *i2s = to_info(dai);
945 u32 reg = readl(i2s->addr + I2SFIC);
946 snd_pcm_sframes_t delay;
947 const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs;
948
949 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
950 delay = FIC_RXCOUNT(reg);
951 else if (is_secondary(i2s))
952 delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS));
953 else
954 delay = (reg >> i2s_regs->ftx0cnt_off) & 0x7f;
955
956 return delay;
957 }
958
959 #ifdef CONFIG_PM
960 static int i2s_suspend(struct snd_soc_dai *dai)
961 {
962 struct i2s_dai *i2s = to_info(dai);
963
964 i2s->suspend_i2smod = readl(i2s->addr + I2SMOD);
965 i2s->suspend_i2scon = readl(i2s->addr + I2SCON);
966 i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);
967
968 return 0;
969 }
970
971 static int i2s_resume(struct snd_soc_dai *dai)
972 {
973 struct i2s_dai *i2s = to_info(dai);
974
975 writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
976 writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);
977 writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR);
978
979 return 0;
980 }
981 #else
982 #define i2s_suspend NULL
983 #define i2s_resume NULL
984 #endif
985
986 static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
987 {
988 struct i2s_dai *i2s = to_info(dai);
989 struct i2s_dai *other = get_other_dai(i2s);
990 unsigned long flags;
991
992 if (is_secondary(i2s)) { /* If this is probe on the secondary DAI */
993 samsung_asoc_init_dma_data(dai, &other->sec_dai->dma_playback,
994 NULL);
995 } else {
996 samsung_asoc_init_dma_data(dai, &i2s->dma_playback,
997 &i2s->dma_capture);
998
999 if (i2s->quirks & QUIRK_NEED_RSTCLR)
1000 writel(CON_RSTCLR, i2s->addr + I2SCON);
1001
1002 if (i2s->quirks & QUIRK_SUPPORTS_IDMA)
1003 idma_reg_addr_init(i2s->addr,
1004 i2s->sec_dai->idma_playback.dma_addr);
1005 }
1006
1007 /* Reset any constraint on RFS and BFS */
1008 i2s->rfs = 0;
1009 i2s->bfs = 0;
1010 i2s->rclk_srcrate = 0;
1011
1012 spin_lock_irqsave(i2s->lock, flags);
1013 i2s_txctrl(i2s, 0);
1014 i2s_rxctrl(i2s, 0);
1015 i2s_fifo(i2s, FIC_TXFLUSH);
1016 i2s_fifo(other, FIC_TXFLUSH);
1017 i2s_fifo(i2s, FIC_RXFLUSH);
1018 spin_unlock_irqrestore(i2s->lock, flags);
1019
1020 /* Gate CDCLK by default */
1021 if (!is_opened(other))
1022 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK,
1023 0, SND_SOC_CLOCK_IN);
1024
1025 return 0;
1026 }
1027
1028 static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
1029 {
1030 struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai);
1031
1032 if (!is_secondary(i2s)) {
1033 if (i2s->quirks & QUIRK_NEED_RSTCLR) {
1034 spin_lock(i2s->lock);
1035 writel(0, i2s->addr + I2SCON);
1036 spin_unlock(i2s->lock);
1037 }
1038 }
1039
1040 return 0;
1041 }
1042
1043 static const struct snd_soc_dai_ops samsung_i2s_dai_ops = {
1044 .trigger = i2s_trigger,
1045 .hw_params = i2s_hw_params,
1046 .set_fmt = i2s_set_fmt,
1047 .set_clkdiv = i2s_set_clkdiv,
1048 .set_sysclk = i2s_set_sysclk,
1049 .startup = i2s_startup,
1050 .shutdown = i2s_shutdown,
1051 .delay = i2s_delay,
1052 };
1053
1054 static const struct snd_soc_component_driver samsung_i2s_component = {
1055 .name = "samsung-i2s",
1056 };
1057
1058 #define SAMSUNG_I2S_RATES SNDRV_PCM_RATE_8000_96000
1059
1060 #define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \
1061 SNDRV_PCM_FMTBIT_S16_LE | \
1062 SNDRV_PCM_FMTBIT_S24_LE)
1063
1064 static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec)
1065 {
1066 struct i2s_dai *i2s;
1067 int ret;
1068
1069 i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL);
1070 if (i2s == NULL)
1071 return NULL;
1072
1073 i2s->pdev = pdev;
1074 i2s->pri_dai = NULL;
1075 i2s->sec_dai = NULL;
1076 i2s->i2s_dai_drv.symmetric_rates = 1;
1077 i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe;
1078 i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove;
1079 i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops;
1080 i2s->i2s_dai_drv.suspend = i2s_suspend;
1081 i2s->i2s_dai_drv.resume = i2s_resume;
1082 i2s->i2s_dai_drv.playback.channels_min = 1;
1083 i2s->i2s_dai_drv.playback.channels_max = 2;
1084 i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES;
1085 i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS;
1086
1087 if (!sec) {
1088 i2s->i2s_dai_drv.capture.channels_min = 1;
1089 i2s->i2s_dai_drv.capture.channels_max = 2;
1090 i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES;
1091 i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS;
1092 dev_set_drvdata(&i2s->pdev->dev, i2s);
1093 } else { /* Create a new platform_device for Secondary */
1094 i2s->pdev = platform_device_alloc("samsung-i2s-sec", -1);
1095 if (!i2s->pdev)
1096 return NULL;
1097
1098 i2s->pdev->dev.parent = &pdev->dev;
1099
1100 platform_set_drvdata(i2s->pdev, i2s);
1101 ret = platform_device_add(i2s->pdev);
1102 if (ret < 0)
1103 return NULL;
1104 }
1105
1106 return i2s;
1107 }
1108
1109 static const struct of_device_id exynos_i2s_match[];
1110
1111 static inline const struct samsung_i2s_dai_data *samsung_i2s_get_driver_data(
1112 struct platform_device *pdev)
1113 {
1114 if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) {
1115 const struct of_device_id *match;
1116 match = of_match_node(exynos_i2s_match, pdev->dev.of_node);
1117 return match ? match->data : NULL;
1118 } else {
1119 return (struct samsung_i2s_dai_data *)
1120 platform_get_device_id(pdev)->driver_data;
1121 }
1122 }
1123
1124 #ifdef CONFIG_PM
1125 static int i2s_runtime_suspend(struct device *dev)
1126 {
1127 struct i2s_dai *i2s = dev_get_drvdata(dev);
1128
1129 clk_disable_unprepare(i2s->clk);
1130
1131 return 0;
1132 }
1133
1134 static int i2s_runtime_resume(struct device *dev)
1135 {
1136 struct i2s_dai *i2s = dev_get_drvdata(dev);
1137
1138 clk_prepare_enable(i2s->clk);
1139
1140 return 0;
1141 }
1142 #endif /* CONFIG_PM */
1143
1144 static void i2s_unregister_clocks(struct i2s_dai *i2s)
1145 {
1146 int i;
1147
1148 for (i = 0; i < i2s->clk_data.clk_num; i++) {
1149 if (!IS_ERR(i2s->clk_table[i]))
1150 clk_unregister(i2s->clk_table[i]);
1151 }
1152 }
1153
1154 static void i2s_unregister_clock_provider(struct platform_device *pdev)
1155 {
1156 struct i2s_dai *i2s = dev_get_drvdata(&pdev->dev);
1157
1158 of_clk_del_provider(pdev->dev.of_node);
1159 i2s_unregister_clocks(i2s);
1160 }
1161
1162 static int i2s_register_clock_provider(struct platform_device *pdev)
1163 {
1164 struct device *dev = &pdev->dev;
1165 struct i2s_dai *i2s = dev_get_drvdata(dev);
1166 const char *clk_name[2] = { "i2s_opclk0", "i2s_opclk1" };
1167 const char *p_names[2] = { NULL };
1168 const struct samsung_i2s_variant_regs *reg_info = i2s->variant_regs;
1169 struct clk *rclksrc;
1170 int ret, i;
1171
1172 /* Register the clock provider only if it's expected in the DTB */
1173 if (!of_find_property(dev->of_node, "#clock-cells", NULL))
1174 return 0;
1175
1176 /* Get the RCLKSRC mux clock parent clock names */
1177 for (i = 0; i < ARRAY_SIZE(p_names); i++) {
1178 rclksrc = clk_get(dev, clk_name[i]);
1179 if (IS_ERR(rclksrc))
1180 continue;
1181 p_names[i] = __clk_get_name(rclksrc);
1182 clk_put(rclksrc);
1183 }
1184
1185 if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
1186 /* Activate the prescaler */
1187 u32 val = readl(i2s->addr + I2SPSR);
1188 writel(val | PSR_PSREN, i2s->addr + I2SPSR);
1189
1190 i2s->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(NULL,
1191 "i2s_rclksrc", p_names, ARRAY_SIZE(p_names),
1192 CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT,
1193 i2s->addr + I2SMOD, reg_info->rclksrc_off,
1194 1, 0, i2s->lock);
1195
1196 i2s->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(NULL,
1197 "i2s_presc", "i2s_rclksrc",
1198 CLK_SET_RATE_PARENT,
1199 i2s->addr + I2SPSR, 8, 6, 0, i2s->lock);
1200
1201 p_names[0] = "i2s_presc";
1202 i2s->clk_data.clk_num = 2;
1203 }
1204 of_property_read_string_index(dev->of_node,
1205 "clock-output-names", 0, &clk_name[0]);
1206
1207 i2s->clk_table[CLK_I2S_CDCLK] = clk_register_gate(NULL, clk_name[0],
1208 p_names[0], CLK_SET_RATE_PARENT,
1209 i2s->addr + I2SMOD, reg_info->cdclkcon_off,
1210 CLK_GATE_SET_TO_DISABLE, i2s->lock);
1211
1212 i2s->clk_data.clk_num += 1;
1213 i2s->clk_data.clks = i2s->clk_table;
1214
1215 ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
1216 &i2s->clk_data);
1217 if (ret < 0) {
1218 dev_err(dev, "failed to add clock provider: %d\n", ret);
1219 i2s_unregister_clocks(i2s);
1220 }
1221
1222 return ret;
1223 }
1224
1225 static int samsung_i2s_probe(struct platform_device *pdev)
1226 {
1227 struct i2s_dai *pri_dai, *sec_dai = NULL;
1228 struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data;
1229 struct samsung_i2s *i2s_cfg = NULL;
1230 struct resource *res;
1231 u32 regs_base, quirks = 0, idma_addr = 0;
1232 struct device_node *np = pdev->dev.of_node;
1233 const struct samsung_i2s_dai_data *i2s_dai_data;
1234 int ret;
1235
1236 /* Call during Seconday interface registration */
1237 i2s_dai_data = samsung_i2s_get_driver_data(pdev);
1238
1239 if (i2s_dai_data->dai_type == TYPE_SEC) {
1240 sec_dai = dev_get_drvdata(&pdev->dev);
1241 if (!sec_dai) {
1242 dev_err(&pdev->dev, "Unable to get drvdata\n");
1243 return -EFAULT;
1244 }
1245 ret = devm_snd_soc_register_component(&sec_dai->pdev->dev,
1246 &samsung_i2s_component,
1247 &sec_dai->i2s_dai_drv, 1);
1248 if (ret != 0)
1249 return ret;
1250
1251 return samsung_asoc_dma_platform_register(&pdev->dev,
1252 sec_dai->filter);
1253 }
1254
1255 pri_dai = i2s_alloc_dai(pdev, false);
1256 if (!pri_dai) {
1257 dev_err(&pdev->dev, "Unable to alloc I2S_pri\n");
1258 return -ENOMEM;
1259 }
1260
1261 spin_lock_init(&pri_dai->spinlock);
1262 pri_dai->lock = &pri_dai->spinlock;
1263
1264 if (!np) {
1265 if (i2s_pdata == NULL) {
1266 dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n");
1267 return -EINVAL;
1268 }
1269
1270 pri_dai->dma_playback.slave = i2s_pdata->dma_playback;
1271 pri_dai->dma_capture.slave = i2s_pdata->dma_capture;
1272 pri_dai->filter = i2s_pdata->dma_filter;
1273
1274 if (&i2s_pdata->type)
1275 i2s_cfg = &i2s_pdata->type.i2s;
1276
1277 if (i2s_cfg) {
1278 quirks = i2s_cfg->quirks;
1279 idma_addr = i2s_cfg->idma_addr;
1280 }
1281 } else {
1282 quirks = i2s_dai_data->quirks;
1283 if (of_property_read_u32(np, "samsung,idma-addr",
1284 &idma_addr)) {
1285 if (quirks & QUIRK_SUPPORTS_IDMA) {
1286 dev_info(&pdev->dev, "idma address is not"\
1287 "specified");
1288 }
1289 }
1290 }
1291
1292 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1293 pri_dai->addr = devm_ioremap_resource(&pdev->dev, res);
1294 if (IS_ERR(pri_dai->addr))
1295 return PTR_ERR(pri_dai->addr);
1296
1297 regs_base = res->start;
1298
1299 pri_dai->clk = devm_clk_get(&pdev->dev, "iis");
1300 if (IS_ERR(pri_dai->clk)) {
1301 dev_err(&pdev->dev, "Failed to get iis clock\n");
1302 return PTR_ERR(pri_dai->clk);
1303 }
1304
1305 ret = clk_prepare_enable(pri_dai->clk);
1306 if (ret != 0) {
1307 dev_err(&pdev->dev, "failed to enable clock: %d\n", ret);
1308 return ret;
1309 }
1310 pri_dai->dma_playback.dma_addr = regs_base + I2STXD;
1311 pri_dai->dma_capture.dma_addr = regs_base + I2SRXD;
1312 pri_dai->dma_playback.ch_name = "tx";
1313 pri_dai->dma_capture.ch_name = "rx";
1314 pri_dai->dma_playback.dma_size = 4;
1315 pri_dai->dma_capture.dma_size = 4;
1316 pri_dai->quirks = quirks;
1317 pri_dai->variant_regs = i2s_dai_data->i2s_variant_regs;
1318
1319 if (quirks & QUIRK_PRI_6CHAN)
1320 pri_dai->i2s_dai_drv.playback.channels_max = 6;
1321
1322 if (quirks & QUIRK_SEC_DAI) {
1323 sec_dai = i2s_alloc_dai(pdev, true);
1324 if (!sec_dai) {
1325 dev_err(&pdev->dev, "Unable to alloc I2S_sec\n");
1326 return -ENOMEM;
1327 }
1328
1329 sec_dai->lock = &pri_dai->spinlock;
1330 sec_dai->variant_regs = pri_dai->variant_regs;
1331 sec_dai->dma_playback.dma_addr = regs_base + I2STXDS;
1332 sec_dai->dma_playback.ch_name = "tx-sec";
1333
1334 if (!np) {
1335 sec_dai->dma_playback.slave = i2s_pdata->dma_play_sec;
1336 sec_dai->filter = i2s_pdata->dma_filter;
1337 }
1338
1339 sec_dai->dma_playback.dma_size = 4;
1340 sec_dai->addr = pri_dai->addr;
1341 sec_dai->clk = pri_dai->clk;
1342 sec_dai->quirks = quirks;
1343 sec_dai->idma_playback.dma_addr = idma_addr;
1344 sec_dai->pri_dai = pri_dai;
1345 pri_dai->sec_dai = sec_dai;
1346 }
1347
1348 if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
1349 dev_err(&pdev->dev, "Unable to configure gpio\n");
1350 return -EINVAL;
1351 }
1352
1353 devm_snd_soc_register_component(&pri_dai->pdev->dev,
1354 &samsung_i2s_component,
1355 &pri_dai->i2s_dai_drv, 1);
1356
1357 pm_runtime_enable(&pdev->dev);
1358
1359 ret = samsung_asoc_dma_platform_register(&pdev->dev, pri_dai->filter);
1360 if (ret != 0)
1361 return ret;
1362
1363 return i2s_register_clock_provider(pdev);
1364 }
1365
1366 static int samsung_i2s_remove(struct platform_device *pdev)
1367 {
1368 struct i2s_dai *i2s, *other;
1369
1370 i2s = dev_get_drvdata(&pdev->dev);
1371 other = get_other_dai(i2s);
1372
1373 if (other) {
1374 other->pri_dai = NULL;
1375 other->sec_dai = NULL;
1376 } else {
1377 pm_runtime_disable(&pdev->dev);
1378 }
1379
1380 if (!is_secondary(i2s)) {
1381 i2s_unregister_clock_provider(pdev);
1382 clk_disable_unprepare(i2s->clk);
1383 }
1384
1385 i2s->pri_dai = NULL;
1386 i2s->sec_dai = NULL;
1387
1388 return 0;
1389 }
1390
1391 static const struct samsung_i2s_variant_regs i2sv3_regs = {
1392 .bfs_off = 1,
1393 .rfs_off = 3,
1394 .sdf_off = 5,
1395 .txr_off = 8,
1396 .rclksrc_off = 10,
1397 .mss_off = 11,
1398 .cdclkcon_off = 12,
1399 .lrp_off = 7,
1400 .bfs_mask = 0x3,
1401 .rfs_mask = 0x3,
1402 .ftx0cnt_off = 8,
1403 };
1404
1405 static const struct samsung_i2s_variant_regs i2sv6_regs = {
1406 .bfs_off = 0,
1407 .rfs_off = 4,
1408 .sdf_off = 6,
1409 .txr_off = 8,
1410 .rclksrc_off = 10,
1411 .mss_off = 11,
1412 .cdclkcon_off = 12,
1413 .lrp_off = 15,
1414 .bfs_mask = 0xf,
1415 .rfs_mask = 0x3,
1416 .ftx0cnt_off = 8,
1417 };
1418
1419 static const struct samsung_i2s_variant_regs i2sv7_regs = {
1420 .bfs_off = 0,
1421 .rfs_off = 4,
1422 .sdf_off = 7,
1423 .txr_off = 9,
1424 .rclksrc_off = 11,
1425 .mss_off = 12,
1426 .cdclkcon_off = 22,
1427 .lrp_off = 15,
1428 .bfs_mask = 0xf,
1429 .rfs_mask = 0x7,
1430 .ftx0cnt_off = 0,
1431 };
1432
1433 static const struct samsung_i2s_variant_regs i2sv5_i2s1_regs = {
1434 .bfs_off = 0,
1435 .rfs_off = 3,
1436 .sdf_off = 6,
1437 .txr_off = 8,
1438 .rclksrc_off = 10,
1439 .mss_off = 11,
1440 .cdclkcon_off = 12,
1441 .lrp_off = 15,
1442 .bfs_mask = 0x7,
1443 .rfs_mask = 0x7,
1444 .ftx0cnt_off = 8,
1445 };
1446
1447 static const struct samsung_i2s_dai_data i2sv3_dai_type = {
1448 .dai_type = TYPE_PRI,
1449 .quirks = QUIRK_NO_MUXPSR,
1450 .i2s_variant_regs = &i2sv3_regs,
1451 };
1452
1453 static const struct samsung_i2s_dai_data i2sv5_dai_type = {
1454 .dai_type = TYPE_PRI,
1455 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1456 QUIRK_SUPPORTS_IDMA,
1457 .i2s_variant_regs = &i2sv3_regs,
1458 };
1459
1460 static const struct samsung_i2s_dai_data i2sv6_dai_type = {
1461 .dai_type = TYPE_PRI,
1462 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1463 QUIRK_SUPPORTS_TDM | QUIRK_SUPPORTS_IDMA,
1464 .i2s_variant_regs = &i2sv6_regs,
1465 };
1466
1467 static const struct samsung_i2s_dai_data i2sv7_dai_type = {
1468 .dai_type = TYPE_PRI,
1469 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1470 QUIRK_SUPPORTS_TDM,
1471 .i2s_variant_regs = &i2sv7_regs,
1472 };
1473
1474 static const struct samsung_i2s_dai_data i2sv5_dai_type_i2s1 = {
1475 .dai_type = TYPE_PRI,
1476 .quirks = QUIRK_PRI_6CHAN | QUIRK_NEED_RSTCLR,
1477 .i2s_variant_regs = &i2sv5_i2s1_regs,
1478 };
1479
1480 static const struct samsung_i2s_dai_data samsung_dai_type_pri = {
1481 .dai_type = TYPE_PRI,
1482 };
1483
1484 static const struct samsung_i2s_dai_data samsung_dai_type_sec = {
1485 .dai_type = TYPE_SEC,
1486 };
1487
1488 static const struct platform_device_id samsung_i2s_driver_ids[] = {
1489 {
1490 .name = "samsung-i2s",
1491 .driver_data = (kernel_ulong_t)&i2sv3_dai_type,
1492 }, {
1493 .name = "samsung-i2s-sec",
1494 .driver_data = (kernel_ulong_t)&samsung_dai_type_sec,
1495 }, {
1496 .name = "samsung-i2sv4",
1497 .driver_data = (kernel_ulong_t)&i2sv5_dai_type,
1498 },
1499 {},
1500 };
1501 MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids);
1502
1503 #ifdef CONFIG_OF
1504 static const struct of_device_id exynos_i2s_match[] = {
1505 {
1506 .compatible = "samsung,s3c6410-i2s",
1507 .data = &i2sv3_dai_type,
1508 }, {
1509 .compatible = "samsung,s5pv210-i2s",
1510 .data = &i2sv5_dai_type,
1511 }, {
1512 .compatible = "samsung,exynos5420-i2s",
1513 .data = &i2sv6_dai_type,
1514 }, {
1515 .compatible = "samsung,exynos7-i2s",
1516 .data = &i2sv7_dai_type,
1517 }, {
1518 .compatible = "samsung,exynos7-i2s1",
1519 .data = &i2sv5_dai_type_i2s1,
1520 },
1521 {},
1522 };
1523 MODULE_DEVICE_TABLE(of, exynos_i2s_match);
1524 #endif
1525
1526 static const struct dev_pm_ops samsung_i2s_pm = {
1527 SET_RUNTIME_PM_OPS(i2s_runtime_suspend,
1528 i2s_runtime_resume, NULL)
1529 };
1530
1531 static struct platform_driver samsung_i2s_driver = {
1532 .probe = samsung_i2s_probe,
1533 .remove = samsung_i2s_remove,
1534 .id_table = samsung_i2s_driver_ids,
1535 .driver = {
1536 .name = "samsung-i2s",
1537 .of_match_table = of_match_ptr(exynos_i2s_match),
1538 .pm = &samsung_i2s_pm,
1539 },
1540 };
1541
1542 module_platform_driver(samsung_i2s_driver);
1543
1544 /* Module information */
1545 MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>");
1546 MODULE_DESCRIPTION("Samsung I2S Interface");
1547 MODULE_ALIAS("platform:samsung-i2s");
1548 MODULE_LICENSE("GPL");
Linux with added FPC-III support