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_OPCLK:
 455                 mod &= ~MOD_OPCLK_MASK;
 456                 mod |= dir;
 457                 break;
 458         case SAMSUNG_I2S_CDCLK:
 459                 /* Shouldn't matter in GATING(CLOCK_IN) mode */
 460                 if (dir == SND_SOC_CLOCK_IN)
 461                         rfs = 0;
 462
 463                 if ((rfs && other->rfs && (other->rfs != rfs)) ||
 464                                 (any_active(i2s) &&
 465                                 (((dir == SND_SOC_CLOCK_IN)
 466                                         && !(mod & MOD_CDCLKCON)) ||
 467                                 ((dir == SND_SOC_CLOCK_OUT)
 468                                         && (mod & MOD_CDCLKCON))))) {
 469                         dev_err(&i2s->pdev->dev,
 470                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 471                         return -EAGAIN;
 472                 }
 473
 474                 if (dir == SND_SOC_CLOCK_IN)
 475                         mod |= MOD_CDCLKCON;
 476                 else
 477                         mod &= ~MOD_CDCLKCON;
 478
 479                 i2s->rfs = rfs;
 480                 break;
 481
 482         case SAMSUNG_I2S_RCLKSRC_0: /* clock corrsponding to IISMOD[10] := 0 */
 483         case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */
 484                 if ((i2s->quirks & QUIRK_NO_MUXPSR)
 485                                 || (clk_id == SAMSUNG_I2S_RCLKSRC_0))
 486                         clk_id = 0;
 487                 else
 488                         clk_id = 1;
 489
 490                 if (!any_active(i2s)) {
 491                         if (i2s->op_clk && !IS_ERR(i2s->op_clk)) {
 492                                 if ((clk_id && !(mod & MOD_IMS_SYSMUX)) ||
 493                                         (!clk_id && (mod & MOD_IMS_SYSMUX))) {
 494                                         clk_disable_unprepare(i2s->op_clk);
 495                                         clk_put(i2s->op_clk);
 496                                 } else {
 497                                         i2s->rclk_srcrate =
 498                                                 clk_get_rate(i2s->op_clk);
 499                                         return 0;
 500                                 }
 501                         }
 502
 503                         if (clk_id)
 504                                 i2s->op_clk = clk_get(&i2s->pdev->dev,
 505                                                 "i2s_opclk1");
 506                         else
 507                                 i2s->op_clk = clk_get(&i2s->pdev->dev,
 508                                                 "i2s_opclk0");
 509
 510                         if (WARN_ON(IS_ERR(i2s->op_clk)))
 511                                 return PTR_ERR(i2s->op_clk);
 512
 513                         clk_prepare_enable(i2s->op_clk);
 514                         i2s->rclk_srcrate = clk_get_rate(i2s->op_clk);
 515
 516                         /* Over-ride the other's */
 517                         if (other) {
 518                                 other->op_clk = i2s->op_clk;
 519                                 other->rclk_srcrate = i2s->rclk_srcrate;
 520                         }
 521                 } else if ((!clk_id && (mod & MOD_IMS_SYSMUX))
 522                                 || (clk_id && !(mod & MOD_IMS_SYSMUX))) {
 523                         dev_err(&i2s->pdev->dev,
 524                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 525                         return -EAGAIN;
 526                 } else {
 527                         /* Call can't be on the active DAI */
 528                         i2s->op_clk = other->op_clk;
 529                         i2s->rclk_srcrate = other->rclk_srcrate;
 530                         return 0;
 531                 }
 532
 533                 if (clk_id == 0)
 534                         mod &= ~MOD_IMS_SYSMUX;
 535                 else
 536                         mod |= MOD_IMS_SYSMUX;
 537                 break;
 538
 539         default:
 540                 dev_err(&i2s->pdev->dev, "We don't serve that!\n");
 541                 return -EINVAL;
 542         }
 543
 544         writel(mod, i2s->addr + I2SMOD);
 545
 546         return 0;
 547 }
 548
 549 static int i2s_set_fmt(struct snd_soc_dai *dai,
 550         unsigned int fmt)
 551 {
 552         struct i2s_dai *i2s = to_info(dai);
 553         u32 mod = readl(i2s->addr + I2SMOD);
 554         int lrp_shift, sdf_shift, sdf_mask, lrp_rlow;
 555         u32 tmp = 0;
 556
 557         if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
 558                 lrp_shift = EXYNOS5420_MOD_LRP_SHIFT;
 559                 sdf_shift = EXYNOS5420_MOD_SDF_SHIFT;
 560         } else {
 561                 lrp_shift = MOD_LRP_SHIFT;
 562                 sdf_shift = MOD_SDF_SHIFT;
 563         }
 564
 565         sdf_mask = MOD_SDF_MASK << sdf_shift;
 566         lrp_rlow = MOD_LR_RLOW << lrp_shift;
 567
 568         /* Format is priority */
 569         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 570         case SND_SOC_DAIFMT_RIGHT_J:
 571                 tmp |= lrp_rlow;
 572                 tmp |= (MOD_SDF_MSB << sdf_shift);
 573                 break;
 574         case SND_SOC_DAIFMT_LEFT_J:
 575                 tmp |= lrp_rlow;
 576                 tmp |= (MOD_SDF_LSB << sdf_shift);
 577                 break;
 578         case SND_SOC_DAIFMT_I2S:
 579                 tmp |= (MOD_SDF_IIS << sdf_shift);
 580                 break;
 581         default:
 582                 dev_err(&i2s->pdev->dev, "Format not supported\n");
 583                 return -EINVAL;
 584         }
 585
 586         /*
 587          * INV flag is relative to the FORMAT flag - if set it simply
 588          * flips the polarity specified by the Standard
 589          */
 590         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 591         case SND_SOC_DAIFMT_NB_NF:
 592                 break;
 593         case SND_SOC_DAIFMT_NB_IF:
 594                 if (tmp & lrp_rlow)
 595                         tmp &= ~lrp_rlow;
 596                 else
 597                         tmp |= lrp_rlow;
 598                 break;
 599         default:
 600                 dev_err(&i2s->pdev->dev, "Polarity not supported\n");
 601                 return -EINVAL;
 602         }
 603
 604         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 605         case SND_SOC_DAIFMT_CBM_CFM:
 606                 tmp |= MOD_SLAVE;
 607                 break;
 608         case SND_SOC_DAIFMT_CBS_CFS:
 609                 /* Set default source clock in Master mode */
 610                 if (i2s->rclk_srcrate == 0)
 611                         i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0,
 612                                                         0, SND_SOC_CLOCK_IN);
 613                 break;
 614         default:
 615                 dev_err(&i2s->pdev->dev, "master/slave format not supported\n");
 616                 return -EINVAL;
 617         }
 618
 619         /*
 620          * Don't change the I2S mode if any controller is active on this
 621          * channel.
 622          */
 623         if (any_active(i2s) &&
 624                 ((mod & (sdf_mask | lrp_rlow | MOD_SLAVE)) != tmp)) {
 625                 dev_err(&i2s->pdev->dev,
 626                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 627                 return -EAGAIN;
 628         }
 629
 630         mod &= ~(sdf_mask | lrp_rlow | MOD_SLAVE);
 631         mod |= tmp;
 632         writel(mod, i2s->addr + I2SMOD);
 633
 634         return 0;
 635 }
 636
 637 static int i2s_hw_params(struct snd_pcm_substream *substream,
 638         struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 639 {
 640         struct i2s_dai *i2s = to_info(dai);
 641         u32 mod = readl(i2s->addr + I2SMOD);
 642
 643         if (!is_secondary(i2s))
 644                 mod &= ~(MOD_DC2_EN | MOD_DC1_EN);
 645
 646         switch (params_channels(params)) {
 647         case 6:
 648                 mod |= MOD_DC2_EN;
 649         case 4:
 650                 mod |= MOD_DC1_EN;
 651                 break;
 652         case 2:
 653                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 654                         i2s->dma_playback.dma_size = 4;
 655                 else
 656                         i2s->dma_capture.dma_size = 4;
 657                 break;
 658         case 1:
 659                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 660                         i2s->dma_playback.dma_size = 2;
 661                 else
 662                         i2s->dma_capture.dma_size = 2;
 663
 664                 break;
 665         default:
 666                 dev_err(&i2s->pdev->dev, "%d channels not supported\n",
 667                                 params_channels(params));
 668                 return -EINVAL;
 669         }
 670
 671         if (is_secondary(i2s))
 672                 mod &= ~MOD_BLCS_MASK;
 673         else
 674                 mod &= ~MOD_BLCP_MASK;
 675
 676         if (is_manager(i2s))
 677                 mod &= ~MOD_BLC_MASK;
 678
 679         switch (params_format(params)) {
 680         case SNDRV_PCM_FORMAT_S8:
 681                 if (is_secondary(i2s))
 682                         mod |= MOD_BLCS_8BIT;
 683                 else
 684                         mod |= MOD_BLCP_8BIT;
 685                 if (is_manager(i2s))
 686                         mod |= MOD_BLC_8BIT;
 687                 break;
 688         case SNDRV_PCM_FORMAT_S16_LE:
 689                 if (is_secondary(i2s))
 690                         mod |= MOD_BLCS_16BIT;
 691                 else
 692                         mod |= MOD_BLCP_16BIT;
 693                 if (is_manager(i2s))
 694                         mod |= MOD_BLC_16BIT;
 695                 break;
 696         case SNDRV_PCM_FORMAT_S24_LE:
 697                 if (is_secondary(i2s))
 698                         mod |= MOD_BLCS_24BIT;
 699                 else
 700                         mod |= MOD_BLCP_24BIT;
 701                 if (is_manager(i2s))
 702                         mod |= MOD_BLC_24BIT;
 703                 break;
 704         default:
 705                 dev_err(&i2s->pdev->dev, "Format(%d) not supported\n",
 706                                 params_format(params));
 707                 return -EINVAL;
 708         }
 709         writel(mod, i2s->addr + I2SMOD);
 710
 711         samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
 712
 713         i2s->frmclk = params_rate(params);
 714
 715         return 0;
 716 }
 717
 718 /* We set constraints on the substream acc to the version of I2S */
 719 static int i2s_startup(struct snd_pcm_substream *substream,
 720           struct snd_soc_dai *dai)
 721 {
 722         struct i2s_dai *i2s = to_info(dai);
 723         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
 724         unsigned long flags;
 725
 726         spin_lock_irqsave(&lock, flags);
 727
 728         i2s->mode |= DAI_OPENED;
 729
 730         if (is_manager(other))
 731                 i2s->mode &= ~DAI_MANAGER;
 732         else
 733                 i2s->mode |= DAI_MANAGER;
 734
 735         if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR))
 736                 writel(CON_RSTCLR, i2s->addr + I2SCON);
 737
 738         spin_unlock_irqrestore(&lock, flags);
 739
 740         return 0;
 741 }
 742
 743 static void i2s_shutdown(struct snd_pcm_substream *substream,
 744         struct snd_soc_dai *dai)
 745 {
 746         struct i2s_dai *i2s = to_info(dai);
 747         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
 748         unsigned long flags;
 749
 750         spin_lock_irqsave(&lock, flags);
 751
 752         i2s->mode &= ~DAI_OPENED;
 753         i2s->mode &= ~DAI_MANAGER;
 754
 755         if (is_opened(other))
 756                 other->mode |= DAI_MANAGER;
 757
 758         /* Reset any constraint on RFS and BFS */
 759         i2s->rfs = 0;
 760         i2s->bfs = 0;
 761
 762         spin_unlock_irqrestore(&lock, flags);
 763
 764         /* Gate CDCLK by default */
 765         if (!is_opened(other))
 766                 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK,
 767                                 0, SND_SOC_CLOCK_IN);
 768 }
 769
 770 static int config_setup(struct i2s_dai *i2s)
 771 {
 772         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
 773         unsigned rfs, bfs, blc;
 774         u32 psr;
 775
 776         blc = get_blc(i2s);
 777
 778         bfs = i2s->bfs;
 779
 780         if (!bfs && other)
 781                 bfs = other->bfs;
 782
 783         /* Select least possible multiple(2) if no constraint set */
 784         if (!bfs)
 785                 bfs = blc * 2;
 786
 787         rfs = i2s->rfs;
 788
 789         if (!rfs && other)
 790                 rfs = other->rfs;
 791
 792         if ((rfs == 256 || rfs == 512) && (blc == 24)) {
 793                 dev_err(&i2s->pdev->dev,
 794                         "%d-RFS not supported for 24-blc\n", rfs);
 795                 return -EINVAL;
 796         }
 797
 798         if (!rfs) {
 799                 if (bfs == 16 || bfs == 32)
 800                         rfs = 256;
 801                 else
 802                         rfs = 384;
 803         }
 804
 805         /* If already setup and running */
 806         if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) {
 807                 dev_err(&i2s->pdev->dev,
 808                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 809                 return -EAGAIN;
 810         }
 811
 812         set_bfs(i2s, bfs);
 813         set_rfs(i2s, rfs);
 814
 815         /* Don't bother with PSR in Slave mode */
 816         if (is_slave(i2s))
 817                 return 0;
 818
 819         if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
 820                 psr = i2s->rclk_srcrate / i2s->frmclk / rfs;
 821                 writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR);
 822                 dev_dbg(&i2s->pdev->dev,
 823                         "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n",
 824                                 i2s->rclk_srcrate, psr, rfs, bfs);
 825         }
 826
 827         return 0;
 828 }
 829
 830 static int i2s_trigger(struct snd_pcm_substream *substream,
 831         int cmd, struct snd_soc_dai *dai)
 832 {
 833         int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
 834         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 835         struct i2s_dai *i2s = to_info(rtd->cpu_dai);
 836         unsigned long flags;
 837
 838         switch (cmd) {
 839         case SNDRV_PCM_TRIGGER_START:
 840         case SNDRV_PCM_TRIGGER_RESUME:
 841         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 842                 local_irq_save(flags);
 843
 844                 if (config_setup(i2s)) {
 845                         local_irq_restore(flags);
 846                         return -EINVAL;
 847                 }
 848
 849                 if (capture)
 850                         i2s_rxctrl(i2s, 1);
 851                 else
 852                         i2s_txctrl(i2s, 1);
 853
 854                 local_irq_restore(flags);
 855                 break;
 856         case SNDRV_PCM_TRIGGER_STOP:
 857         case SNDRV_PCM_TRIGGER_SUSPEND:
 858         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 859                 local_irq_save(flags);
 860
 861                 if (capture) {
 862                         i2s_rxctrl(i2s, 0);
 863                         i2s_fifo(i2s, FIC_RXFLUSH);
 864                 } else {
 865                         i2s_txctrl(i2s, 0);
 866                         i2s_fifo(i2s, FIC_TXFLUSH);
 867                 }
 868
 869                 local_irq_restore(flags);
 870                 break;
 871         }
 872
 873         return 0;
 874 }
 875
 876 static int i2s_set_clkdiv(struct snd_soc_dai *dai,
 877         int div_id, int div)
 878 {
 879         struct i2s_dai *i2s = to_info(dai);
 880         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
 881
 882         switch (div_id) {
 883         case SAMSUNG_I2S_DIV_BCLK:
 884                 if ((any_active(i2s) && div && (get_bfs(i2s) != div))
 885                         || (other && other->bfs && (other->bfs != div))) {
 886                         dev_err(&i2s->pdev->dev,
 887                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 888                         return -EAGAIN;
 889                 }
 890                 i2s->bfs = div;
 891                 break;
 892         default:
 893                 dev_err(&i2s->pdev->dev,
 894                         "Invalid clock divider(%d)\n", div_id);
 895                 return -EINVAL;
 896         }
 897
 898         return 0;
 899 }
 900
 901 static snd_pcm_sframes_t
 902 i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 903 {
 904         struct i2s_dai *i2s = to_info(dai);
 905         u32 reg = readl(i2s->addr + I2SFIC);
 906         snd_pcm_sframes_t delay;
 907
 908         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 909                 delay = FIC_RXCOUNT(reg);
 910         else if (is_secondary(i2s))
 911                 delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS));
 912         else
 913                 delay = FIC_TXCOUNT(reg);
 914
 915         return delay;
 916 }
 917
 918 #ifdef CONFIG_PM
 919 static int i2s_suspend(struct snd_soc_dai *dai)
 920 {
 921         struct i2s_dai *i2s = to_info(dai);
 922
 923         if (dai->active) {
 924                 i2s->suspend_i2smod = readl(i2s->addr + I2SMOD);
 925                 i2s->suspend_i2scon = readl(i2s->addr + I2SCON);
 926                 i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);
 927         }
 928
 929         return 0;
 930 }
 931
 932 static int i2s_resume(struct snd_soc_dai *dai)
 933 {
 934         struct i2s_dai *i2s = to_info(dai);
 935
 936         if (dai->active) {
 937                 writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
 938                 writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);
 939                 writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR);
 940         }
 941
 942         return 0;
 943 }
 944 #else
 945 #define i2s_suspend NULL
 946 #define i2s_resume  NULL
 947 #endif
 948
 949 static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
 950 {
 951         struct i2s_dai *i2s = to_info(dai);
 952         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
 953
 954         if (other && other->clk) { /* If this is probe on secondary */
 955                 samsung_asoc_init_dma_data(dai, &other->sec_dai->dma_playback,
 956                                            NULL);
 957                 goto probe_exit;
 958         }
 959
 960         i2s->addr = ioremap(i2s->base, 0x100);
 961         if (i2s->addr == NULL) {
 962                 dev_err(&i2s->pdev->dev, "cannot ioremap registers\n");
 963                 return -ENXIO;
 964         }
 965
 966         i2s->clk = clk_get(&i2s->pdev->dev, "iis");
 967         if (IS_ERR(i2s->clk)) {
 968                 dev_err(&i2s->pdev->dev, "failed to get i2s_clock\n");
 969                 iounmap(i2s->addr);
 970                 return -ENOENT;
 971         }
 972         clk_prepare_enable(i2s->clk);
 973
 974         samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
 975
 976         if (other) {
 977                 other->addr = i2s->addr;
 978                 other->clk = i2s->clk;
 979         }
 980
 981         if (i2s->quirks & QUIRK_NEED_RSTCLR)
 982                 writel(CON_RSTCLR, i2s->addr + I2SCON);
 983
 984         if (i2s->quirks & QUIRK_SEC_DAI)
 985                 idma_reg_addr_init(i2s->addr,
 986                                         i2s->sec_dai->idma_playback.dma_addr);
 987
 988 probe_exit:
 989         /* Reset any constraint on RFS and BFS */
 990         i2s->rfs = 0;
 991         i2s->bfs = 0;
 992         i2s->rclk_srcrate = 0;
 993         i2s_txctrl(i2s, 0);
 994         i2s_rxctrl(i2s, 0);
 995         i2s_fifo(i2s, FIC_TXFLUSH);
 996         i2s_fifo(other, FIC_TXFLUSH);
 997         i2s_fifo(i2s, FIC_RXFLUSH);
 998
 999         /* Gate CDCLK by default */
1000         if (!is_opened(other))
1001                 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK,
1002                                 0, SND_SOC_CLOCK_IN);
1003
1004         return 0;
1005 }
1006
1007 static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
1008 {
1009         struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai);
1010         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
1011
1012         if (!other || !other->clk) {
1013
1014                 if (i2s->quirks & QUIRK_NEED_RSTCLR)
1015                         writel(0, i2s->addr + I2SCON);
1016
1017                 clk_disable_unprepare(i2s->clk);
1018                 clk_put(i2s->clk);
1019
1020                 iounmap(i2s->addr);
1021         }
1022
1023         i2s->clk = NULL;
1024
1025         return 0;
1026 }
1027
1028 static const struct snd_soc_dai_ops samsung_i2s_dai_ops = {
1029         .trigger = i2s_trigger,
1030         .hw_params = i2s_hw_params,
1031         .set_fmt = i2s_set_fmt,
1032         .set_clkdiv = i2s_set_clkdiv,
1033         .set_sysclk = i2s_set_sysclk,
1034         .startup = i2s_startup,
1035         .shutdown = i2s_shutdown,
1036         .delay = i2s_delay,
1037 };
1038
1039 static const struct snd_soc_component_driver samsung_i2s_component = {
1040         .name           = "samsung-i2s",
1041 };
1042
1043 #define SAMSUNG_I2S_RATES       SNDRV_PCM_RATE_8000_96000
1044
1045 #define SAMSUNG_I2S_FMTS        (SNDRV_PCM_FMTBIT_S8 | \
1046                                         SNDRV_PCM_FMTBIT_S16_LE | \
1047                                         SNDRV_PCM_FMTBIT_S24_LE)
1048
1049 static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec)
1050 {
1051         struct i2s_dai *i2s;
1052         int ret;
1053
1054         i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL);
1055         if (i2s == NULL)
1056                 return NULL;
1057
1058         i2s->pdev = pdev;
1059         i2s->pri_dai = NULL;
1060         i2s->sec_dai = NULL;
1061         i2s->i2s_dai_drv.symmetric_rates = 1;
1062         i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe;
1063         i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove;
1064         i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops;
1065         i2s->i2s_dai_drv.suspend = i2s_suspend;
1066         i2s->i2s_dai_drv.resume = i2s_resume;
1067         i2s->i2s_dai_drv.playback.channels_min = 1;
1068         i2s->i2s_dai_drv.playback.channels_max = 2;
1069         i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES;
1070         i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS;
1071
1072         if (!sec) {
1073                 i2s->i2s_dai_drv.capture.channels_min = 1;
1074                 i2s->i2s_dai_drv.capture.channels_max = 2;
1075                 i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES;
1076                 i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS;
1077                 dev_set_drvdata(&i2s->pdev->dev, i2s);
1078         } else {        /* Create a new platform_device for Secondary */
1079                 i2s->pdev = platform_device_alloc("samsung-i2s-sec", -1);
1080                 if (!i2s->pdev)
1081                         return NULL;
1082
1083                 i2s->pdev->dev.parent = &pdev->dev;
1084
1085                 platform_set_drvdata(i2s->pdev, i2s);
1086                 ret = platform_device_add(i2s->pdev);
1087                 if (ret < 0)
1088                         return NULL;
1089         }
1090
1091         return i2s;
1092 }
1093
1094 static const struct of_device_id exynos_i2s_match[];
1095
1096 static inline const struct samsung_i2s_dai_data *samsung_i2s_get_driver_data(
1097                                                 struct platform_device *pdev)
1098 {
1099 #ifdef CONFIG_OF
1100         if (pdev->dev.of_node) {
1101                 const struct of_device_id *match;
1102                 match = of_match_node(exynos_i2s_match, pdev->dev.of_node);
1103                 return match->data;
1104         } else
1105 #endif
1106                 return (struct samsung_i2s_dai_data *)
1107                                 platform_get_device_id(pdev)->driver_data;
1108 }
1109
1110 #ifdef CONFIG_PM_RUNTIME
1111 static int i2s_runtime_suspend(struct device *dev)
1112 {
1113         struct i2s_dai *i2s = dev_get_drvdata(dev);
1114
1115         clk_disable_unprepare(i2s->clk);
1116
1117         return 0;
1118 }
1119
1120 static int i2s_runtime_resume(struct device *dev)
1121 {
1122         struct i2s_dai *i2s = dev_get_drvdata(dev);
1123
1124         clk_prepare_enable(i2s->clk);
1125
1126         return 0;
1127 }
1128 #endif /* CONFIG_PM_RUNTIME */
1129
1130 static int samsung_i2s_probe(struct platform_device *pdev)
1131 {
1132         struct i2s_dai *pri_dai, *sec_dai = NULL;
1133         struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data;
1134         struct samsung_i2s *i2s_cfg = NULL;
1135         struct resource *res;
1136         u32 regs_base, quirks = 0, idma_addr = 0;
1137         struct device_node *np = pdev->dev.of_node;
1138         const struct samsung_i2s_dai_data *i2s_dai_data;
1139         int ret = 0;
1140
1141         /* Call during Seconday interface registration */
1142         i2s_dai_data = samsung_i2s_get_driver_data(pdev);
1143
1144         if (i2s_dai_data->dai_type == TYPE_SEC) {
1145                 sec_dai = dev_get_drvdata(&pdev->dev);
1146                 if (!sec_dai) {
1147                         dev_err(&pdev->dev, "Unable to get drvdata\n");
1148                         return -EFAULT;
1149                 }
1150                 devm_snd_soc_register_component(&sec_dai->pdev->dev,
1151                                                 &samsung_i2s_component,
1152                                                 &sec_dai->i2s_dai_drv, 1);
1153                 samsung_asoc_dma_platform_register(&pdev->dev);
1154                 return 0;
1155         }
1156
1157         pri_dai = i2s_alloc_dai(pdev, false);
1158         if (!pri_dai) {
1159                 dev_err(&pdev->dev, "Unable to alloc I2S_pri\n");
1160                 return -ENOMEM;
1161         }
1162
1163         if (!np) {
1164                 res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
1165                 if (!res) {
1166                         dev_err(&pdev->dev,
1167                                 "Unable to get I2S-TX dma resource\n");
1168                         return -ENXIO;
1169                 }
1170                 pri_dai->dma_playback.channel = res->start;
1171
1172                 res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
1173                 if (!res) {
1174                         dev_err(&pdev->dev,
1175                                 "Unable to get I2S-RX dma resource\n");
1176                         return -ENXIO;
1177                 }
1178                 pri_dai->dma_capture.channel = res->start;
1179
1180                 if (i2s_pdata == NULL) {
1181                         dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n");
1182                         return -EINVAL;
1183                 }
1184
1185                 if (&i2s_pdata->type)
1186                         i2s_cfg = &i2s_pdata->type.i2s;
1187
1188                 if (i2s_cfg) {
1189                         quirks = i2s_cfg->quirks;
1190                         idma_addr = i2s_cfg->idma_addr;
1191                 }
1192         } else {
1193                 quirks = i2s_dai_data->quirks;
1194                 if (of_property_read_u32(np, "samsung,idma-addr",
1195                                          &idma_addr)) {
1196                         if (quirks & QUIRK_SEC_DAI) {
1197                                 dev_err(&pdev->dev, "idma address is not"\
1198                                                 "specified");
1199                                 return -EINVAL;
1200                         }
1201                 }
1202         }
1203
1204         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1205         if (!res) {
1206                 dev_err(&pdev->dev, "Unable to get I2S SFR address\n");
1207                 return -ENXIO;
1208         }
1209
1210         if (!request_mem_region(res->start, resource_size(res),
1211                                                         "samsung-i2s")) {
1212                 dev_err(&pdev->dev, "Unable to request SFR region\n");
1213                 return -EBUSY;
1214         }
1215         regs_base = res->start;
1216
1217         pri_dai->dma_playback.dma_addr = regs_base + I2STXD;
1218         pri_dai->dma_capture.dma_addr = regs_base + I2SRXD;
1219         pri_dai->dma_playback.client =
1220                 (struct s3c_dma_client *)&pri_dai->dma_playback;
1221         pri_dai->dma_playback.ch_name = "tx";
1222         pri_dai->dma_capture.client =
1223                 (struct s3c_dma_client *)&pri_dai->dma_capture;
1224         pri_dai->dma_capture.ch_name = "rx";
1225         pri_dai->dma_playback.dma_size = 4;
1226         pri_dai->dma_capture.dma_size = 4;
1227         pri_dai->base = regs_base;
1228         pri_dai->quirks = quirks;
1229
1230         if (quirks & QUIRK_PRI_6CHAN)
1231                 pri_dai->i2s_dai_drv.playback.channels_max = 6;
1232
1233         if (quirks & QUIRK_SEC_DAI) {
1234                 sec_dai = i2s_alloc_dai(pdev, true);
1235                 if (!sec_dai) {
1236                         dev_err(&pdev->dev, "Unable to alloc I2S_sec\n");
1237                         ret = -ENOMEM;
1238                         goto err;
1239                 }
1240                 sec_dai->dma_playback.dma_addr = regs_base + I2STXDS;
1241                 sec_dai->dma_playback.client =
1242                         (struct s3c_dma_client *)&sec_dai->dma_playback;
1243                 sec_dai->dma_playback.ch_name = "tx-sec";
1244
1245                 if (!np) {
1246                         res = platform_get_resource(pdev, IORESOURCE_DMA, 2);
1247                         if (res)
1248                                 sec_dai->dma_playback.channel = res->start;
1249                 }
1250
1251                 sec_dai->dma_playback.dma_size = 4;
1252                 sec_dai->base = regs_base;
1253                 sec_dai->quirks = quirks;
1254                 sec_dai->idma_playback.dma_addr = idma_addr;
1255                 sec_dai->pri_dai = pri_dai;
1256                 pri_dai->sec_dai = sec_dai;
1257         }
1258
1259         if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
1260                 dev_err(&pdev->dev, "Unable to configure gpio\n");
1261                 ret = -EINVAL;
1262                 goto err;
1263         }
1264
1265         devm_snd_soc_register_component(&pri_dai->pdev->dev,
1266                                         &samsung_i2s_component,
1267                                         &pri_dai->i2s_dai_drv, 1);
1268
1269         pm_runtime_enable(&pdev->dev);
1270
1271         samsung_asoc_dma_platform_register(&pdev->dev);
1272
1273         return 0;
1274 err:
1275         if (res)
1276                 release_mem_region(regs_base, resource_size(res));
1277
1278         return ret;
1279 }
1280
1281 static int samsung_i2s_remove(struct platform_device *pdev)
1282 {
1283         struct i2s_dai *i2s, *other;
1284         struct resource *res;
1285
1286         i2s = dev_get_drvdata(&pdev->dev);
1287         other = i2s->pri_dai ? : i2s->sec_dai;
1288
1289         if (other) {
1290                 other->pri_dai = NULL;
1291                 other->sec_dai = NULL;
1292         } else {
1293                 pm_runtime_disable(&pdev->dev);
1294                 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1295                 if (res)
1296                         release_mem_region(res->start, resource_size(res));
1297         }
1298
1299         i2s->pri_dai = NULL;
1300         i2s->sec_dai = NULL;
1301
1302         return 0;
1303 }
1304
1305 static const struct samsung_i2s_dai_data i2sv3_dai_type = {
1306         .dai_type = TYPE_PRI,
1307         .quirks = QUIRK_NO_MUXPSR,
1308 };
1309
1310 static const struct samsung_i2s_dai_data i2sv5_dai_type = {
1311         .dai_type = TYPE_PRI,
1312         .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR,
1313 };
1314
1315 static const struct samsung_i2s_dai_data i2sv6_dai_type = {
1316         .dai_type = TYPE_PRI,
1317         .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1318                         QUIRK_SUPPORTS_TDM,
1319 };
1320
1321 static const struct samsung_i2s_dai_data samsung_dai_type_pri = {
1322         .dai_type = TYPE_PRI,
1323 };
1324
1325 static const struct samsung_i2s_dai_data samsung_dai_type_sec = {
1326         .dai_type = TYPE_SEC,
1327 };
1328
1329 static struct platform_device_id samsung_i2s_driver_ids[] = {
1330         {
1331                 .name           = "samsung-i2s",
1332                 .driver_data    = (kernel_ulong_t)&samsung_dai_type_pri,
1333         }, {
1334                 .name           = "samsung-i2s-sec",
1335                 .driver_data    = (kernel_ulong_t)&samsung_dai_type_sec,
1336         },
1337         {},
1338 };
1339 MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids);
1340
1341 #ifdef CONFIG_OF
1342 static const struct of_device_id exynos_i2s_match[] = {
1343         {
1344                 .compatible = "samsung,s3c6410-i2s",
1345                 .data = &i2sv3_dai_type,
1346         }, {
1347                 .compatible = "samsung,s5pv210-i2s",
1348                 .data = &i2sv5_dai_type,
1349         }, {
1350                 .compatible = "samsung,exynos5420-i2s",
1351                 .data = &i2sv6_dai_type,
1352         },
1353         {},
1354 };
1355 MODULE_DEVICE_TABLE(of, exynos_i2s_match);
1356 #endif
1357
1358 static const struct dev_pm_ops samsung_i2s_pm = {
1359         SET_RUNTIME_PM_OPS(i2s_runtime_suspend,
1360                                 i2s_runtime_resume, NULL)
1361 };
1362
1363 static struct platform_driver samsung_i2s_driver = {
1364         .probe  = samsung_i2s_probe,
1365         .remove = samsung_i2s_remove,
1366         .id_table = samsung_i2s_driver_ids,
1367         .driver = {
1368                 .name = "samsung-i2s",
1369                 .owner = THIS_MODULE,
1370                 .of_match_table = of_match_ptr(exynos_i2s_match),
1371                 .pm = &samsung_i2s_pm,
1372         },
1373 };
1374
1375 module_platform_driver(samsung_i2s_driver);
1376
1377 /* Module information */
1378 MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>");
1379 MODULE_DESCRIPTION("Samsung I2S Interface");
1380 MODULE_ALIAS("platform:samsung-i2s");
1381 MODULE_LICENSE("GPL");