Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/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 <linux/delay.h>
 14 #include <linux/slab.h>
 15 #include <linux/clk.h>
 16 #include <linux/io.h>
 17 #include <linux/module.h>
 18 #include <linux/of.h>
 19 #include <linux/of_gpio.h>
 20 #include <linux/pm_runtime.h>
 21 
 22 #include <sound/soc.h>
 23 #include <sound/pcm_params.h>
 24 
 25 #include <linux/platform_data/asoc-s3c.h>
 26 
 27 #include "dma.h"
 28 #include "idma.h"
 29 #include "i2s.h"
 30 #include "i2s-regs.h"
 31 
 32 #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
 33 
 34 enum samsung_dai_type {
 35         TYPE_PRI,
 36         TYPE_SEC,
 37 };
 38 
 39 struct samsung_i2s_dai_data {
 40         int dai_type;
 41         u32 quirks;
 42 };
 43 
 44 struct i2s_dai {
 45         /* Platform device for this DAI */
 46         struct platform_device *pdev;
 47         /* IOREMAP'd SFRs */
 48         void __iomem    *addr;
 49         /* Physical base address of SFRs */
 50         u32     base;
 51         /* Rate of RCLK source clock */
 52         unsigned long rclk_srcrate;
 53         /* Frame Clock */
 54         unsigned frmclk;
 55         /*
 56          * Specifically requested RCLK,BCLK by MACHINE Driver.
 57          * 0 indicates CPU driver is free to choose any value.
 58          */
 59         unsigned rfs, bfs;
 60         /* I2S Controller's core clock */
 61         struct clk *clk;
 62         /* Clock for generating I2S signals */
 63         struct clk *op_clk;
 64         /* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */
 65         struct i2s_dai *pri_dai;
 66         /* Pointer to the Secondary_Fifo if it has one, NULL otherwise */
 67         struct i2s_dai *sec_dai;
 68 #define DAI_OPENED      (1 << 0) /* Dai is opened */
 69 #define DAI_MANAGER     (1 << 1) /* Dai is the manager */
 70         unsigned mode;
 71         /* Driver for this DAI */
 72         struct snd_soc_dai_driver i2s_dai_drv;
 73         /* DMA parameters */
 74         struct s3c_dma_params dma_playback;
 75         struct s3c_dma_params dma_capture;
 76         struct s3c_dma_params idma_playback;
 77         u32     quirks;
 78         u32     suspend_i2smod;
 79         u32     suspend_i2scon;
 80         u32     suspend_i2spsr;
 81         unsigned long gpios[7]; /* i2s gpio line numbers */
 82 };
 83 
 84 /* Lock for cross i/f checks */
 85 static DEFINE_SPINLOCK(lock);
 86 
 87 /* If this is the 'overlay' stereo DAI */
 88 static inline bool is_secondary(struct i2s_dai *i2s)
 89 {
 90         return i2s->pri_dai ? true : false;
 91 }
 92 
 93 /* If operating in SoC-Slave mode */
 94 static inline bool is_slave(struct i2s_dai *i2s)
 95 {
 96         return (readl(i2s->addr + I2SMOD) & MOD_SLAVE) ? true : false;
 97 }
 98 
 99 /* If this interface of the controller is transmitting data */
100 static inline bool tx_active(struct i2s_dai *i2s)
101 {
102         u32 active;
103 
104         if (!i2s)
105                 return false;
106 
107         active = readl(i2s->addr + I2SCON);
108 
109         if (is_secondary(i2s))
110                 active &= CON_TXSDMA_ACTIVE;
111         else
112                 active &= CON_TXDMA_ACTIVE;
113 
114         return active ? true : false;
115 }
116 
117 /* If the other interface of the controller is transmitting data */
118 static inline bool other_tx_active(struct i2s_dai *i2s)
119 {
120         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
121 
122         return tx_active(other);
123 }
124 
125 /* If any interface of the controller is transmitting data */
126 static inline bool any_tx_active(struct i2s_dai *i2s)
127 {
128         return tx_active(i2s) || other_tx_active(i2s);
129 }
130 
131 /* If this interface of the controller is receiving data */
132 static inline bool rx_active(struct i2s_dai *i2s)
133 {
134         u32 active;
135 
136         if (!i2s)
137                 return false;
138 
139         active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE;
140 
141         return active ? true : false;
142 }
143 
144 /* If the other interface of the controller is receiving data */
145 static inline bool other_rx_active(struct i2s_dai *i2s)
146 {
147         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
148 
149         return rx_active(other);
150 }
151 
152 /* If any interface of the controller is receiving data */
153 static inline bool any_rx_active(struct i2s_dai *i2s)
154 {
155         return rx_active(i2s) || other_rx_active(i2s);
156 }
157 
158 /* If the other DAI is transmitting or receiving data */
159 static inline bool other_active(struct i2s_dai *i2s)
160 {
161         return other_rx_active(i2s) || other_tx_active(i2s);
162 }
163 
164 /* If this DAI is transmitting or receiving data */
165 static inline bool this_active(struct i2s_dai *i2s)
166 {
167         return tx_active(i2s) || rx_active(i2s);
168 }
169 
170 /* If the controller is active anyway */
171 static inline bool any_active(struct i2s_dai *i2s)
172 {
173         return this_active(i2s) || other_active(i2s);
174 }
175 
176 static inline struct i2s_dai *to_info(struct snd_soc_dai *dai)
177 {
178         return snd_soc_dai_get_drvdata(dai);
179 }
180 
181 static inline bool is_opened(struct i2s_dai *i2s)
182 {
183         if (i2s && (i2s->mode & DAI_OPENED))
184                 return true;
185         else
186                 return false;
187 }
188 
189 static inline bool is_manager(struct i2s_dai *i2s)
190 {
191         if (is_opened(i2s) && (i2s->mode & DAI_MANAGER))
192                 return true;
193         else
194                 return false;
195 }
196 
197 /* Read RCLK of I2S (in multiples of LRCLK) */
198 static inline unsigned get_rfs(struct i2s_dai *i2s)
199 {
200         u32 rfs;
201 
202         if (i2s->quirks & QUIRK_SUPPORTS_TDM)
203                 rfs = readl(i2s->addr + I2SMOD) >> EXYNOS5420_MOD_RCLK_SHIFT;
204         else
205                 rfs = (readl(i2s->addr + I2SMOD) >> MOD_RCLK_SHIFT);
206         rfs &= MOD_RCLK_MASK;
207 
208         switch (rfs) {
209         case 3: return 768;
210         case 2: return 384;
211         case 1: return 512;
212         default: return 256;
213         }
214 }
215 
216 /* Write RCLK of I2S (in multiples of LRCLK) */
217 static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
218 {
219         u32 mod = readl(i2s->addr + I2SMOD);
220         int rfs_shift;
221 
222         if (i2s->quirks & QUIRK_SUPPORTS_TDM)
223                 rfs_shift = EXYNOS5420_MOD_RCLK_SHIFT;
224         else
225                 rfs_shift = MOD_RCLK_SHIFT;
226         mod &= ~(MOD_RCLK_MASK << rfs_shift);
227 
228         switch (rfs) {
229         case 768:
230                 mod |= (MOD_RCLK_768FS << rfs_shift);
231                 break;
232         case 512:
233                 mod |= (MOD_RCLK_512FS << rfs_shift);
234                 break;
235         case 384:
236                 mod |= (MOD_RCLK_384FS << rfs_shift);
237                 break;
238         default:
239                 mod |= (MOD_RCLK_256FS << rfs_shift);
240                 break;
241         }
242 
243         writel(mod, i2s->addr + I2SMOD);
244 }
245 
246 /* Read Bit-Clock of I2S (in multiples of LRCLK) */
247 static inline unsigned get_bfs(struct i2s_dai *i2s)
248 {
249         u32 bfs;
250 
251         if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
252                 bfs = readl(i2s->addr + I2SMOD) >> EXYNOS5420_MOD_BCLK_SHIFT;
253                 bfs &= EXYNOS5420_MOD_BCLK_MASK;
254         } else {
255                 bfs =  readl(i2s->addr + I2SMOD) >> MOD_BCLK_SHIFT;
256                 bfs &= MOD_BCLK_MASK;
257         }
258 
259         switch (bfs) {
260         case 8: return 256;
261         case 7: return 192;
262         case 6: return 128;
263         case 5: return 96;
264         case 4: return 64;
265         case 3: return 24;
266         case 2: return 16;
267         case 1: return 48;
268         default: return 32;
269         }
270 }
271 
272 /* Write Bit-Clock of I2S (in multiples of LRCLK) */
273 static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
274 {
275         u32 mod = readl(i2s->addr + I2SMOD);
276         int bfs_shift;
277         int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM;
278 
279         if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
280                 bfs_shift = EXYNOS5420_MOD_BCLK_SHIFT;
281                 mod &= ~(EXYNOS5420_MOD_BCLK_MASK << bfs_shift);
282         } else {
283                 bfs_shift = MOD_BCLK_SHIFT;
284                 mod &= ~(MOD_BCLK_MASK << bfs_shift);
285         }
286 
287         /* Non-TDM I2S controllers do not support BCLK > 48 * FS */
288         if (!tdm && bfs > 48) {
289                 dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n");
290                 return;
291         }
292 
293         switch (bfs) {
294         case 48:
295                 mod |= (MOD_BCLK_48FS << bfs_shift);
296                 break;
297         case 32:
298                 mod |= (MOD_BCLK_32FS << bfs_shift);
299                 break;
300         case 24:
301                 mod |= (MOD_BCLK_24FS << bfs_shift);
302                 break;
303         case 16:
304                 mod |= (MOD_BCLK_16FS << bfs_shift);
305                 break;
306         case 64:
307                 mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift);
308                 break;
309         case 96:
310                 mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift);
311                 break;
312         case 128:
313                 mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift);
314                 break;
315         case 192:
316                 mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift);
317                 break;
318         case 256:
319                 mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift);
320                 break;
321         default:
322                 dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n");
323                 return;
324         }
325 
326         writel(mod, i2s->addr + I2SMOD);
327 }
328 
329 /* Sample-Size */
330 static inline int get_blc(struct i2s_dai *i2s)
331 {
332         int blc = readl(i2s->addr + I2SMOD);
333 
334         blc = (blc >> 13) & 0x3;
335 
336         switch (blc) {
337         case 2: return 24;
338         case 1: return 8;
339         default: return 16;
340         }
341 }
342 
343 /* TX Channel Control */
344 static void i2s_txctrl(struct i2s_dai *i2s, int on)
345 {
346         void __iomem *addr = i2s->addr;
347         u32 con = readl(addr + I2SCON);
348         u32 mod = readl(addr + I2SMOD) & ~MOD_MASK;
349 
350         if (on) {
351                 con |= CON_ACTIVE;
352                 con &= ~CON_TXCH_PAUSE;
353 
354                 if (is_secondary(i2s)) {
355                         con |= CON_TXSDMA_ACTIVE;
356                         con &= ~CON_TXSDMA_PAUSE;
357                 } else {
358                         con |= CON_TXDMA_ACTIVE;
359                         con &= ~CON_TXDMA_PAUSE;
360                 }
361 
362                 if (any_rx_active(i2s))
363                         mod |= MOD_TXRX;
364                 else
365                         mod |= MOD_TXONLY;
366         } else {
367                 if (is_secondary(i2s)) {
368                         con |=  CON_TXSDMA_PAUSE;
369                         con &= ~CON_TXSDMA_ACTIVE;
370                 } else {
371                         con |=  CON_TXDMA_PAUSE;
372                         con &= ~CON_TXDMA_ACTIVE;
373                 }
374 
375                 if (other_tx_active(i2s)) {
376                         writel(con, addr + I2SCON);
377                         return;
378                 }
379 
380                 con |=  CON_TXCH_PAUSE;
381 
382                 if (any_rx_active(i2s))
383                         mod |= MOD_RXONLY;
384                 else
385                         con &= ~CON_ACTIVE;
386         }
387 
388         writel(mod, addr + I2SMOD);
389         writel(con, addr + I2SCON);
390 }
391 
392 /* RX Channel Control */
393 static void i2s_rxctrl(struct i2s_dai *i2s, int on)
394 {
395         void __iomem *addr = i2s->addr;
396         u32 con = readl(addr + I2SCON);
397         u32 mod = readl(addr + I2SMOD) & ~MOD_MASK;
398 
399         if (on) {
400                 con |= CON_RXDMA_ACTIVE | CON_ACTIVE;
401                 con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE);
402 
403                 if (any_tx_active(i2s))
404                         mod |= MOD_TXRX;
405                 else
406                         mod |= MOD_RXONLY;
407         } else {
408                 con |=  CON_RXDMA_PAUSE | CON_RXCH_PAUSE;
409                 con &= ~CON_RXDMA_ACTIVE;
410 
411                 if (any_tx_active(i2s))
412                         mod |= MOD_TXONLY;
413                 else
414                         con &= ~CON_ACTIVE;
415         }
416 
417         writel(mod, addr + I2SMOD);
418         writel(con, addr + I2SCON);
419 }
420 
421 /* Flush FIFO of an interface */
422 static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush)
423 {
424         void __iomem *fic;
425         u32 val;
426 
427         if (!i2s)
428                 return;
429 
430         if (is_secondary(i2s))
431                 fic = i2s->addr + I2SFICS;
432         else
433                 fic = i2s->addr + I2SFIC;
434 
435         /* Flush the FIFO */
436         writel(readl(fic) | flush, fic);
437 
438         /* Be patient */
439         val = msecs_to_loops(1) / 1000; /* 1 usec */
440         while (--val)
441                 cpu_relax();
442 
443         writel(readl(fic) & ~flush, fic);
444 }
445 
446 static int i2s_set_sysclk(struct snd_soc_dai *dai,
447           int clk_id, unsigned int rfs, int dir)
448 {
449         struct i2s_dai *i2s = to_info(dai);
450         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
451         u32 mod = readl(i2s->addr + I2SMOD);
452 
453         switch (clk_id) {
454         case SAMSUNG_I2S_CDCLK:
455                 /* Shouldn't matter in GATING(CLOCK_IN) mode */
456                 if (dir == SND_SOC_CLOCK_IN)
457                         rfs = 0;
458 
459                 if ((rfs && other->rfs && (other->rfs != rfs)) ||
460                                 (any_active(i2s) &&
461                                 (((dir == SND_SOC_CLOCK_IN)
462                                         && !(mod & MOD_CDCLKCON)) ||
463                                 ((dir == SND_SOC_CLOCK_OUT)
464                                         && (mod & MOD_CDCLKCON))))) {
465                         dev_err(&i2s->pdev->dev,
466                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
467                         return -EAGAIN;
468                 }
469 
470                 if (dir == SND_SOC_CLOCK_IN)
471                         mod |= MOD_CDCLKCON;
472                 else
473                         mod &= ~MOD_CDCLKCON;
474 
475                 i2s->rfs = rfs;
476                 break;
477 
478         case SAMSUNG_I2S_RCLKSRC_0: /* clock corrsponding to IISMOD[10] := 0 */
479         case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */
480                 if ((i2s->quirks & QUIRK_NO_MUXPSR)
481                                 || (clk_id == SAMSUNG_I2S_RCLKSRC_0))
482                         clk_id = 0;
483                 else
484                         clk_id = 1;
485 
486                 if (!any_active(i2s)) {
487                         if (i2s->op_clk) {
488                                 if ((clk_id && !(mod & MOD_IMS_SYSMUX)) ||
489                                         (!clk_id && (mod & MOD_IMS_SYSMUX))) {
490                                         clk_disable_unprepare(i2s->op_clk);
491                                         clk_put(i2s->op_clk);
492                                 } else {
493                                         i2s->rclk_srcrate =
494                                                 clk_get_rate(i2s->op_clk);
495                                         return 0;
496                                 }
497                         }
498 
499                         if (clk_id)
500                                 i2s->op_clk = clk_get(&i2s->pdev->dev,
501                                                 "i2s_opclk1");
502                         else
503                                 i2s->op_clk = clk_get(&i2s->pdev->dev,
504                                                 "i2s_opclk0");
505                         clk_prepare_enable(i2s->op_clk);
506                         i2s->rclk_srcrate = clk_get_rate(i2s->op_clk);
507 
508                         /* Over-ride the other's */
509                         if (other) {
510                                 other->op_clk = i2s->op_clk;
511                                 other->rclk_srcrate = i2s->rclk_srcrate;
512                         }
513                 } else if ((!clk_id && (mod & MOD_IMS_SYSMUX))
514                                 || (clk_id && !(mod & MOD_IMS_SYSMUX))) {
515                         dev_err(&i2s->pdev->dev,
516                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
517                         return -EAGAIN;
518                 } else {
519                         /* Call can't be on the active DAI */
520                         i2s->op_clk = other->op_clk;
521                         i2s->rclk_srcrate = other->rclk_srcrate;
522                         return 0;
523                 }
524 
525                 if (clk_id == 0)
526                         mod &= ~MOD_IMS_SYSMUX;
527                 else
528                         mod |= MOD_IMS_SYSMUX;
529                 break;
530 
531         default:
532                 dev_err(&i2s->pdev->dev, "We don't serve that!\n");
533                 return -EINVAL;
534         }
535 
536         writel(mod, i2s->addr + I2SMOD);
537 
538         return 0;
539 }
540 
541 static int i2s_set_fmt(struct snd_soc_dai *dai,
542         unsigned int fmt)
543 {
544         struct i2s_dai *i2s = to_info(dai);
545         u32 mod = readl(i2s->addr + I2SMOD);
546         int lrp_shift, sdf_shift, sdf_mask, lrp_rlow;
547         u32 tmp = 0;
548 
549         if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
550                 lrp_shift = EXYNOS5420_MOD_LRP_SHIFT;
551                 sdf_shift = EXYNOS5420_MOD_SDF_SHIFT;
552         } else {
553                 lrp_shift = MOD_LRP_SHIFT;
554                 sdf_shift = MOD_SDF_SHIFT;
555         }
556 
557         sdf_mask = MOD_SDF_MASK << sdf_shift;
558         lrp_rlow = MOD_LR_RLOW << lrp_shift;
559 
560         /* Format is priority */
561         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
562         case SND_SOC_DAIFMT_RIGHT_J:
563                 tmp |= lrp_rlow;
564                 tmp |= (MOD_SDF_MSB << sdf_shift);
565                 break;
566         case SND_SOC_DAIFMT_LEFT_J:
567                 tmp |= lrp_rlow;
568                 tmp |= (MOD_SDF_LSB << sdf_shift);
569                 break;
570         case SND_SOC_DAIFMT_I2S:
571                 tmp |= (MOD_SDF_IIS << sdf_shift);
572                 break;
573         default:
574                 dev_err(&i2s->pdev->dev, "Format not supported\n");
575                 return -EINVAL;
576         }
577 
578         /*
579          * INV flag is relative to the FORMAT flag - if set it simply
580          * flips the polarity specified by the Standard
581          */
582         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
583         case SND_SOC_DAIFMT_NB_NF:
584                 break;
585         case SND_SOC_DAIFMT_NB_IF:
586                 if (tmp & lrp_rlow)
587                         tmp &= ~lrp_rlow;
588                 else
589                         tmp |= lrp_rlow;
590                 break;
591         default:
592                 dev_err(&i2s->pdev->dev, "Polarity not supported\n");
593                 return -EINVAL;
594         }
595 
596         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
597         case SND_SOC_DAIFMT_CBM_CFM:
598                 tmp |= MOD_SLAVE;
599                 break;
600         case SND_SOC_DAIFMT_CBS_CFS:
601                 /* Set default source clock in Master mode */
602                 if (i2s->rclk_srcrate == 0)
603                         i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0,
604                                                         0, SND_SOC_CLOCK_IN);
605                 break;
606         default:
607                 dev_err(&i2s->pdev->dev, "master/slave format not supported\n");
608                 return -EINVAL;
609         }
610 
611         /*
612          * Don't change the I2S mode if any controller is active on this
613          * channel.
614          */
615         if (any_active(i2s) &&
616                 ((mod & (sdf_mask | lrp_rlow | MOD_SLAVE)) != tmp)) {
617                 dev_err(&i2s->pdev->dev,
618                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
619                 return -EAGAIN;
620         }
621 
622         mod &= ~(sdf_mask | lrp_rlow | MOD_SLAVE);
623         mod |= tmp;
624         writel(mod, i2s->addr + I2SMOD);
625 
626         return 0;
627 }
628 
629 static int i2s_hw_params(struct snd_pcm_substream *substream,
630         struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
631 {
632         struct i2s_dai *i2s = to_info(dai);
633         u32 mod = readl(i2s->addr + I2SMOD);
634 
635         if (!is_secondary(i2s))
636                 mod &= ~(MOD_DC2_EN | MOD_DC1_EN);
637 
638         switch (params_channels(params)) {
639         case 6:
640                 mod |= MOD_DC2_EN;
641         case 4:
642                 mod |= MOD_DC1_EN;
643                 break;
644         case 2:
645                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
646                         i2s->dma_playback.dma_size = 4;
647                 else
648                         i2s->dma_capture.dma_size = 4;
649                 break;
650         case 1:
651                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
652                         i2s->dma_playback.dma_size = 2;
653                 else
654                         i2s->dma_capture.dma_size = 2;
655 
656                 break;
657         default:
658                 dev_err(&i2s->pdev->dev, "%d channels not supported\n",
659                                 params_channels(params));
660                 return -EINVAL;
661         }
662 
663         if (is_secondary(i2s))
664                 mod &= ~MOD_BLCS_MASK;
665         else
666                 mod &= ~MOD_BLCP_MASK;
667 
668         if (is_manager(i2s))
669                 mod &= ~MOD_BLC_MASK;
670 
671         switch (params_format(params)) {
672         case SNDRV_PCM_FORMAT_S8:
673                 if (is_secondary(i2s))
674                         mod |= MOD_BLCS_8BIT;
675                 else
676                         mod |= MOD_BLCP_8BIT;
677                 if (is_manager(i2s))
678                         mod |= MOD_BLC_8BIT;
679                 break;
680         case SNDRV_PCM_FORMAT_S16_LE:
681                 if (is_secondary(i2s))
682                         mod |= MOD_BLCS_16BIT;
683                 else
684                         mod |= MOD_BLCP_16BIT;
685                 if (is_manager(i2s))
686                         mod |= MOD_BLC_16BIT;
687                 break;
688         case SNDRV_PCM_FORMAT_S24_LE:
689                 if (is_secondary(i2s))
690                         mod |= MOD_BLCS_24BIT;
691                 else
692                         mod |= MOD_BLCP_24BIT;
693                 if (is_manager(i2s))
694                         mod |= MOD_BLC_24BIT;
695                 break;
696         default:
697                 dev_err(&i2s->pdev->dev, "Format(%d) not supported\n",
698                                 params_format(params));
699                 return -EINVAL;
700         }
701         writel(mod, i2s->addr + I2SMOD);
702 
703         samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
704 
705         i2s->frmclk = params_rate(params);
706 
707         return 0;
708 }
709 
710 /* We set constraints on the substream acc to the version of I2S */
711 static int i2s_startup(struct snd_pcm_substream *substream,
712           struct snd_soc_dai *dai)
713 {
714         struct i2s_dai *i2s = to_info(dai);
715         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
716         unsigned long flags;
717 
718         spin_lock_irqsave(&lock, flags);
719 
720         i2s->mode |= DAI_OPENED;
721 
722         if (is_manager(other))
723                 i2s->mode &= ~DAI_MANAGER;
724         else
725                 i2s->mode |= DAI_MANAGER;
726 
727         /* Enforce set_sysclk in Master mode */
728         i2s->rclk_srcrate = 0;
729 
730         if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR))
731                 writel(CON_RSTCLR, i2s->addr + I2SCON);
732 
733         spin_unlock_irqrestore(&lock, flags);
734 
735         return 0;
736 }
737 
738 static void i2s_shutdown(struct snd_pcm_substream *substream,
739         struct snd_soc_dai *dai)
740 {
741         struct i2s_dai *i2s = to_info(dai);
742         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
743         unsigned long flags;
744 
745         spin_lock_irqsave(&lock, flags);
746 
747         i2s->mode &= ~DAI_OPENED;
748         i2s->mode &= ~DAI_MANAGER;
749 
750         if (is_opened(other))
751                 other->mode |= DAI_MANAGER;
752 
753         /* Reset any constraint on RFS and BFS */
754         i2s->rfs = 0;
755         i2s->bfs = 0;
756 
757         spin_unlock_irqrestore(&lock, flags);
758 
759         /* Gate CDCLK by default */
760         if (!is_opened(other))
761                 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK,
762                                 0, SND_SOC_CLOCK_IN);
763 }
764 
765 static int config_setup(struct i2s_dai *i2s)
766 {
767         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
768         unsigned rfs, bfs, blc;
769         u32 psr;
770 
771         blc = get_blc(i2s);
772 
773         bfs = i2s->bfs;
774 
775         if (!bfs && other)
776                 bfs = other->bfs;
777 
778         /* Select least possible multiple(2) if no constraint set */
779         if (!bfs)
780                 bfs = blc * 2;
781 
782         rfs = i2s->rfs;
783 
784         if (!rfs && other)
785                 rfs = other->rfs;
786 
787         if ((rfs == 256 || rfs == 512) && (blc == 24)) {
788                 dev_err(&i2s->pdev->dev,
789                         "%d-RFS not supported for 24-blc\n", rfs);
790                 return -EINVAL;
791         }
792 
793         if (!rfs) {
794                 if (bfs == 16 || bfs == 32)
795                         rfs = 256;
796                 else
797                         rfs = 384;
798         }
799 
800         /* If already setup and running */
801         if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) {
802                 dev_err(&i2s->pdev->dev,
803                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
804                 return -EAGAIN;
805         }
806 
807         set_bfs(i2s, bfs);
808         set_rfs(i2s, rfs);
809 
810         /* Don't bother with PSR in Slave mode */
811         if (is_slave(i2s))
812                 return 0;
813 
814         if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
815                 psr = i2s->rclk_srcrate / i2s->frmclk / rfs;
816                 writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR);
817                 dev_dbg(&i2s->pdev->dev,
818                         "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n",
819                                 i2s->rclk_srcrate, psr, rfs, bfs);
820         }
821 
822         return 0;
823 }
824 
825 static int i2s_trigger(struct snd_pcm_substream *substream,
826         int cmd, struct snd_soc_dai *dai)
827 {
828         int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
829         struct snd_soc_pcm_runtime *rtd = substream->private_data;
830         struct i2s_dai *i2s = to_info(rtd->cpu_dai);
831         unsigned long flags;
832 
833         switch (cmd) {
834         case SNDRV_PCM_TRIGGER_START:
835         case SNDRV_PCM_TRIGGER_RESUME:
836         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
837                 local_irq_save(flags);
838 
839                 if (config_setup(i2s)) {
840                         local_irq_restore(flags);
841                         return -EINVAL;
842                 }
843 
844                 if (capture)
845                         i2s_rxctrl(i2s, 1);
846                 else
847                         i2s_txctrl(i2s, 1);
848 
849                 local_irq_restore(flags);
850                 break;
851         case SNDRV_PCM_TRIGGER_STOP:
852         case SNDRV_PCM_TRIGGER_SUSPEND:
853         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
854                 local_irq_save(flags);
855 
856                 if (capture) {
857                         i2s_rxctrl(i2s, 0);
858                         i2s_fifo(i2s, FIC_RXFLUSH);
859                 } else {
860                         i2s_txctrl(i2s, 0);
861                         i2s_fifo(i2s, FIC_TXFLUSH);
862                 }
863 
864                 local_irq_restore(flags);
865                 break;
866         }
867 
868         return 0;
869 }
870 
871 static int i2s_set_clkdiv(struct snd_soc_dai *dai,
872         int div_id, int div)
873 {
874         struct i2s_dai *i2s = to_info(dai);
875         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
876 
877         switch (div_id) {
878         case SAMSUNG_I2S_DIV_BCLK:
879                 if ((any_active(i2s) && div && (get_bfs(i2s) != div))
880                         || (other && other->bfs && (other->bfs != div))) {
881                         dev_err(&i2s->pdev->dev,
882                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
883                         return -EAGAIN;
884                 }
885                 i2s->bfs = div;
886                 break;
887         default:
888                 dev_err(&i2s->pdev->dev,
889                         "Invalid clock divider(%d)\n", div_id);
890                 return -EINVAL;
891         }
892 
893         return 0;
894 }
895 
896 static snd_pcm_sframes_t
897 i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
898 {
899         struct i2s_dai *i2s = to_info(dai);
900         u32 reg = readl(i2s->addr + I2SFIC);
901         snd_pcm_sframes_t delay;
902 
903         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
904                 delay = FIC_RXCOUNT(reg);
905         else if (is_secondary(i2s))
906                 delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS));
907         else
908                 delay = FIC_TXCOUNT(reg);
909 
910         return delay;
911 }
912 
913 #ifdef CONFIG_PM
914 static int i2s_suspend(struct snd_soc_dai *dai)
915 {
916         struct i2s_dai *i2s = to_info(dai);
917 
918         if (dai->active) {
919                 i2s->suspend_i2smod = readl(i2s->addr + I2SMOD);
920                 i2s->suspend_i2scon = readl(i2s->addr + I2SCON);
921                 i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);
922         }
923 
924         return 0;
925 }
926 
927 static int i2s_resume(struct snd_soc_dai *dai)
928 {
929         struct i2s_dai *i2s = to_info(dai);
930 
931         if (dai->active) {
932                 writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
933                 writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);
934                 writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR);
935         }
936 
937         return 0;
938 }
939 #else
940 #define i2s_suspend NULL
941 #define i2s_resume  NULL
942 #endif
943 
944 static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
945 {
946         struct i2s_dai *i2s = to_info(dai);
947         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
948 
949         if (other && other->clk) { /* If this is probe on secondary */
950                 samsung_asoc_init_dma_data(dai, &other->sec_dai->dma_playback,
951                                            NULL);
952                 goto probe_exit;
953         }
954 
955         i2s->addr = ioremap(i2s->base, 0x100);
956         if (i2s->addr == NULL) {
957                 dev_err(&i2s->pdev->dev, "cannot ioremap registers\n");
958                 return -ENXIO;
959         }
960 
961         i2s->clk = clk_get(&i2s->pdev->dev, "iis");
962         if (IS_ERR(i2s->clk)) {
963                 dev_err(&i2s->pdev->dev, "failed to get i2s_clock\n");
964                 iounmap(i2s->addr);
965                 return -ENOENT;
966         }
967         clk_prepare_enable(i2s->clk);
968 
969         samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
970 
971         if (other) {
972                 other->addr = i2s->addr;
973                 other->clk = i2s->clk;
974         }
975 
976         if (i2s->quirks & QUIRK_NEED_RSTCLR)
977                 writel(CON_RSTCLR, i2s->addr + I2SCON);
978 
979         if (i2s->quirks & QUIRK_SEC_DAI)
980                 idma_reg_addr_init(i2s->addr,
981                                         i2s->sec_dai->idma_playback.dma_addr);
982 
983 probe_exit:
984         /* Reset any constraint on RFS and BFS */
985         i2s->rfs = 0;
986         i2s->bfs = 0;
987         i2s_txctrl(i2s, 0);
988         i2s_rxctrl(i2s, 0);
989         i2s_fifo(i2s, FIC_TXFLUSH);
990         i2s_fifo(other, FIC_TXFLUSH);
991         i2s_fifo(i2s, FIC_RXFLUSH);
992 
993         /* Gate CDCLK by default */
994         if (!is_opened(other))
995                 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK,
996                                 0, SND_SOC_CLOCK_IN);
997 
998         return 0;
999 }
1000 
1001 static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
1002 {
1003         struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai);
1004         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
1005 
1006         if (!other || !other->clk) {
1007 
1008                 if (i2s->quirks & QUIRK_NEED_RSTCLR)
1009                         writel(0, i2s->addr + I2SCON);
1010 
1011                 clk_disable_unprepare(i2s->clk);
1012                 clk_put(i2s->clk);
1013 
1014                 iounmap(i2s->addr);
1015         }
1016 
1017         i2s->clk = NULL;
1018 
1019         return 0;
1020 }
1021 
1022 static const struct snd_soc_dai_ops samsung_i2s_dai_ops = {
1023         .trigger = i2s_trigger,
1024         .hw_params = i2s_hw_params,
1025         .set_fmt = i2s_set_fmt,
1026         .set_clkdiv = i2s_set_clkdiv,
1027         .set_sysclk = i2s_set_sysclk,
1028         .startup = i2s_startup,
1029         .shutdown = i2s_shutdown,
1030         .delay = i2s_delay,
1031 };
1032 
1033 static const struct snd_soc_component_driver samsung_i2s_component = {
1034         .name           = "samsung-i2s",
1035 };
1036 
1037 #define SAMSUNG_I2S_RATES       SNDRV_PCM_RATE_8000_96000
1038 
1039 #define SAMSUNG_I2S_FMTS        (SNDRV_PCM_FMTBIT_S8 | \
1040                                         SNDRV_PCM_FMTBIT_S16_LE | \
1041                                         SNDRV_PCM_FMTBIT_S24_LE)
1042 
1043 static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec)
1044 {
1045         struct i2s_dai *i2s;
1046         int ret;
1047 
1048         i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL);
1049         if (i2s == NULL)
1050                 return NULL;
1051 
1052         i2s->pdev = pdev;
1053         i2s->pri_dai = NULL;
1054         i2s->sec_dai = NULL;
1055         i2s->i2s_dai_drv.symmetric_rates = 1;
1056         i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe;
1057         i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove;
1058         i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops;
1059         i2s->i2s_dai_drv.suspend = i2s_suspend;
1060         i2s->i2s_dai_drv.resume = i2s_resume;
1061         i2s->i2s_dai_drv.playback.channels_min = 1;
1062         i2s->i2s_dai_drv.playback.channels_max = 2;
1063         i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES;
1064         i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS;
1065 
1066         if (!sec) {
1067                 i2s->i2s_dai_drv.capture.channels_min = 1;
1068                 i2s->i2s_dai_drv.capture.channels_max = 2;
1069                 i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES;
1070                 i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS;
1071                 dev_set_drvdata(&i2s->pdev->dev, i2s);
1072         } else {        /* Create a new platform_device for Secondary */
1073                 i2s->pdev = platform_device_alloc("samsung-i2s-sec", -1);
1074                 if (!i2s->pdev)
1075                         return NULL;
1076 
1077                 i2s->pdev->dev.parent = &pdev->dev;
1078 
1079                 platform_set_drvdata(i2s->pdev, i2s);
1080                 ret = platform_device_add(i2s->pdev);
1081                 if (ret < 0)
1082                         return NULL;
1083         }
1084 
1085         return i2s;
1086 }
1087 
1088 static const struct of_device_id exynos_i2s_match[];
1089 
1090 static inline const struct samsung_i2s_dai_data *samsung_i2s_get_driver_data(
1091                                                 struct platform_device *pdev)
1092 {
1093 #ifdef CONFIG_OF
1094         if (pdev->dev.of_node) {
1095                 const struct of_device_id *match;
1096                 match = of_match_node(exynos_i2s_match, pdev->dev.of_node);
1097                 return match->data;
1098         } else
1099 #endif
1100                 return (struct samsung_i2s_dai_data *)
1101                                 platform_get_device_id(pdev)->driver_data;
1102 }
1103 
1104 #ifdef CONFIG_PM_RUNTIME
1105 static int i2s_runtime_suspend(struct device *dev)
1106 {
1107         struct i2s_dai *i2s = dev_get_drvdata(dev);
1108 
1109         clk_disable_unprepare(i2s->clk);
1110 
1111         return 0;
1112 }
1113 
1114 static int i2s_runtime_resume(struct device *dev)
1115 {
1116         struct i2s_dai *i2s = dev_get_drvdata(dev);
1117 
1118         clk_prepare_enable(i2s->clk);
1119 
1120         return 0;
1121 }
1122 #endif /* CONFIG_PM_RUNTIME */
1123 
1124 static int samsung_i2s_probe(struct platform_device *pdev)
1125 {
1126         struct i2s_dai *pri_dai, *sec_dai = NULL;
1127         struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data;
1128         struct samsung_i2s *i2s_cfg = NULL;
1129         struct resource *res;
1130         u32 regs_base, quirks = 0, idma_addr = 0;
1131         struct device_node *np = pdev->dev.of_node;
1132         const struct samsung_i2s_dai_data *i2s_dai_data;
1133         int ret = 0;
1134 
1135         /* Call during Seconday interface registration */
1136         i2s_dai_data = samsung_i2s_get_driver_data(pdev);
1137 
1138         if (i2s_dai_data->dai_type == TYPE_SEC) {
1139                 sec_dai = dev_get_drvdata(&pdev->dev);
1140                 if (!sec_dai) {
1141                         dev_err(&pdev->dev, "Unable to get drvdata\n");
1142                         return -EFAULT;
1143                 }
1144                 devm_snd_soc_register_component(&sec_dai->pdev->dev,
1145                                                 &samsung_i2s_component,
1146                                                 &sec_dai->i2s_dai_drv, 1);
1147                 samsung_asoc_dma_platform_register(&pdev->dev);
1148                 return 0;
1149         }
1150 
1151         pri_dai = i2s_alloc_dai(pdev, false);
1152         if (!pri_dai) {
1153                 dev_err(&pdev->dev, "Unable to alloc I2S_pri\n");
1154                 return -ENOMEM;
1155         }
1156 
1157         if (!np) {
1158                 res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
1159                 if (!res) {
1160                         dev_err(&pdev->dev,
1161                                 "Unable to get I2S-TX dma resource\n");
1162                         return -ENXIO;
1163                 }
1164                 pri_dai->dma_playback.channel = res->start;
1165 
1166                 res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
1167                 if (!res) {
1168                         dev_err(&pdev->dev,
1169                                 "Unable to get I2S-RX dma resource\n");
1170                         return -ENXIO;
1171                 }
1172                 pri_dai->dma_capture.channel = res->start;
1173 
1174                 if (i2s_pdata == NULL) {
1175                         dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n");
1176                         return -EINVAL;
1177                 }
1178 
1179                 if (&i2s_pdata->type)
1180                         i2s_cfg = &i2s_pdata->type.i2s;
1181 
1182                 if (i2s_cfg) {
1183                         quirks = i2s_cfg->quirks;
1184                         idma_addr = i2s_cfg->idma_addr;
1185                 }
1186         } else {
1187                 quirks = i2s_dai_data->quirks;
1188                 if (of_property_read_u32(np, "samsung,idma-addr",
1189                                          &idma_addr)) {
1190                         if (quirks & QUIRK_SEC_DAI) {
1191                                 dev_err(&pdev->dev, "idma address is not"\
1192                                                 "specified");
1193                                 return -EINVAL;
1194                         }
1195                 }
1196         }
1197 
1198         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1199         if (!res) {
1200                 dev_err(&pdev->dev, "Unable to get I2S SFR address\n");
1201                 return -ENXIO;
1202         }
1203 
1204         if (!request_mem_region(res->start, resource_size(res),
1205                                                         "samsung-i2s")) {
1206                 dev_err(&pdev->dev, "Unable to request SFR region\n");
1207                 return -EBUSY;
1208         }
1209         regs_base = res->start;
1210 
1211         pri_dai->dma_playback.dma_addr = regs_base + I2STXD;
1212         pri_dai->dma_capture.dma_addr = regs_base + I2SRXD;
1213         pri_dai->dma_playback.client =
1214                 (struct s3c_dma_client *)&pri_dai->dma_playback;
1215         pri_dai->dma_playback.ch_name = "tx";
1216         pri_dai->dma_capture.client =
1217                 (struct s3c_dma_client *)&pri_dai->dma_capture;
1218         pri_dai->dma_capture.ch_name = "rx";
1219         pri_dai->dma_playback.dma_size = 4;
1220         pri_dai->dma_capture.dma_size = 4;
1221         pri_dai->base = regs_base;
1222         pri_dai->quirks = quirks;
1223 
1224         if (quirks & QUIRK_PRI_6CHAN)
1225                 pri_dai->i2s_dai_drv.playback.channels_max = 6;
1226 
1227         if (quirks & QUIRK_SEC_DAI) {
1228                 sec_dai = i2s_alloc_dai(pdev, true);
1229                 if (!sec_dai) {
1230                         dev_err(&pdev->dev, "Unable to alloc I2S_sec\n");
1231                         ret = -ENOMEM;
1232                         goto err;
1233                 }
1234                 sec_dai->dma_playback.dma_addr = regs_base + I2STXDS;
1235                 sec_dai->dma_playback.client =
1236                         (struct s3c_dma_client *)&sec_dai->dma_playback;
1237                 sec_dai->dma_playback.ch_name = "tx-sec";
1238 
1239                 if (!np) {
1240                         res = platform_get_resource(pdev, IORESOURCE_DMA, 2);
1241                         if (res)
1242                                 sec_dai->dma_playback.channel = res->start;
1243                 }
1244 
1245                 sec_dai->dma_playback.dma_size = 4;
1246                 sec_dai->base = regs_base;
1247                 sec_dai->quirks = quirks;
1248                 sec_dai->idma_playback.dma_addr = idma_addr;
1249                 sec_dai->pri_dai = pri_dai;
1250                 pri_dai->sec_dai = sec_dai;
1251         }
1252 
1253         if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
1254                 dev_err(&pdev->dev, "Unable to configure gpio\n");
1255                 ret = -EINVAL;
1256                 goto err;
1257         }
1258 
1259         devm_snd_soc_register_component(&pri_dai->pdev->dev,
1260                                         &samsung_i2s_component,
1261                                         &pri_dai->i2s_dai_drv, 1);
1262 
1263         pm_runtime_enable(&pdev->dev);
1264 
1265         samsung_asoc_dma_platform_register(&pdev->dev);
1266 
1267         return 0;
1268 err:
1269         if (res)
1270                 release_mem_region(regs_base, resource_size(res));
1271 
1272         return ret;
1273 }
1274 
1275 static int samsung_i2s_remove(struct platform_device *pdev)
1276 {
1277         struct i2s_dai *i2s, *other;
1278         struct resource *res;
1279 
1280         i2s = dev_get_drvdata(&pdev->dev);
1281         other = i2s->pri_dai ? : i2s->sec_dai;
1282 
1283         if (other) {
1284                 other->pri_dai = NULL;
1285                 other->sec_dai = NULL;
1286         } else {
1287                 pm_runtime_disable(&pdev->dev);
1288                 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1289                 if (res)
1290                         release_mem_region(res->start, resource_size(res));
1291         }
1292 
1293         i2s->pri_dai = NULL;
1294         i2s->sec_dai = NULL;
1295 
1296         samsung_asoc_dma_platform_unregister(&pdev->dev);
1297 
1298         return 0;
1299 }
1300 
1301 static const struct samsung_i2s_dai_data i2sv3_dai_type = {
1302         .dai_type = TYPE_PRI,
1303         .quirks = QUIRK_NO_MUXPSR,
1304 };
1305 
1306 static const struct samsung_i2s_dai_data i2sv5_dai_type = {
1307         .dai_type = TYPE_PRI,
1308         .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR,
1309 };
1310 
1311 static const struct samsung_i2s_dai_data i2sv6_dai_type = {
1312         .dai_type = TYPE_PRI,
1313         .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1314                         QUIRK_SUPPORTS_TDM,
1315 };
1316 
1317 static const struct samsung_i2s_dai_data samsung_dai_type_pri = {
1318         .dai_type = TYPE_PRI,
1319 };
1320 
1321 static const struct samsung_i2s_dai_data samsung_dai_type_sec = {
1322         .dai_type = TYPE_SEC,
1323 };
1324 
1325 static struct platform_device_id samsung_i2s_driver_ids[] = {
1326         {
1327                 .name           = "samsung-i2s",
1328                 .driver_data    = (kernel_ulong_t)&samsung_dai_type_pri,
1329         }, {
1330                 .name           = "samsung-i2s-sec",
1331                 .driver_data    = (kernel_ulong_t)&samsung_dai_type_sec,
1332         },
1333         {},
1334 };
1335 MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids);
1336 
1337 #ifdef CONFIG_OF
1338 static const struct of_device_id exynos_i2s_match[] = {
1339         {
1340                 .compatible = "samsung,s3c6410-i2s",
1341                 .data = &i2sv3_dai_type,
1342         }, {
1343                 .compatible = "samsung,s5pv210-i2s",
1344                 .data = &i2sv5_dai_type,
1345         }, {
1346                 .compatible = "samsung,exynos5420-i2s",
1347                 .data = &i2sv6_dai_type,
1348         },
1349         {},
1350 };
1351 MODULE_DEVICE_TABLE(of, exynos_i2s_match);
1352 #endif
1353 
1354 static const struct dev_pm_ops samsung_i2s_pm = {
1355         SET_RUNTIME_PM_OPS(i2s_runtime_suspend,
1356                                 i2s_runtime_resume, NULL)
1357 };
1358 
1359 static struct platform_driver samsung_i2s_driver = {
1360         .probe  = samsung_i2s_probe,
1361         .remove = samsung_i2s_remove,
1362         .id_table = samsung_i2s_driver_ids,
1363         .driver = {
1364                 .name = "samsung-i2s",
1365                 .owner = THIS_MODULE,
1366                 .of_match_table = of_match_ptr(exynos_i2s_match),
1367                 .pm = &samsung_i2s_pm,
1368         },
1369 };
1370 
1371 module_platform_driver(samsung_i2s_driver);
1372 
1373 /* Module information */
1374 MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>");
1375 MODULE_DESCRIPTION("Samsung I2S Interface");
1376 MODULE_ALIAS("platform:samsung-i2s");
1377 MODULE_LICENSE("GPL");
1378 

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