Pileus Git - ~andy/linux/blob - 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 <mach/dma.h>
  26
  27 #include <linux/platform_data/asoc-s3c.h>
  28
  29 #include "dma.h"
  30 #include "idma.h"
  31 #include "i2s.h"
  32 #include "i2s-regs.h"
  33
  34 #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
  35
  36 enum samsung_dai_type {
  37         TYPE_PRI,
  38         TYPE_SEC,
  39 };
  40
  41 struct samsung_i2s_dai_data {
  42         int dai_type;
  43         u32 quirks;
  44 };
  45
  46 struct i2s_dai {
  47         /* Platform device for this DAI */
  48         struct platform_device *pdev;
  49         /* IOREMAP'd SFRs */
  50         void __iomem    *addr;
  51         /* Physical base address of SFRs */
  52         u32     base;
  53         /* Rate of RCLK source clock */
  54         unsigned long rclk_srcrate;
  55         /* Frame Clock */
  56         unsigned frmclk;
  57         /*
  58          * Specifically requested RCLK,BCLK by MACHINE Driver.
  59          * 0 indicates CPU driver is free to choose any value.
  60          */
  61         unsigned rfs, bfs;
  62         /* I2S Controller's core clock */
  63         struct clk *clk;
  64         /* Clock for generating I2S signals */
  65         struct clk *op_clk;
  66         /* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */
  67         struct i2s_dai *pri_dai;
  68         /* Pointer to the Secondary_Fifo if it has one, NULL otherwise */
  69         struct i2s_dai *sec_dai;
  70 #define DAI_OPENED      (1 << 0) /* Dai is opened */
  71 #define DAI_MANAGER     (1 << 1) /* Dai is the manager */
  72         unsigned mode;
  73         /* Driver for this DAI */
  74         struct snd_soc_dai_driver i2s_dai_drv;
  75         /* DMA parameters */
  76         struct s3c_dma_params dma_playback;
  77         struct s3c_dma_params dma_capture;
  78         struct s3c_dma_params idma_playback;
  79         u32     quirks;
  80         u32     suspend_i2smod;
  81         u32     suspend_i2scon;
  82         u32     suspend_i2spsr;
  83         unsigned long gpios[7]; /* i2s gpio line numbers */
  84 };
  85
  86 /* Lock for cross i/f checks */
  87 static DEFINE_SPINLOCK(lock);
  88
  89 /* If this is the 'overlay' stereo DAI */
  90 static inline bool is_secondary(struct i2s_dai *i2s)
  91 {
  92         return i2s->pri_dai ? true : false;
  93 }
  94
  95 /* If operating in SoC-Slave mode */
  96 static inline bool is_slave(struct i2s_dai *i2s)
  97 {
  98         return (readl(i2s->addr + I2SMOD) & MOD_SLAVE) ? true : false;
  99 }
 100
 101 /* If this interface of the controller is transmitting data */
 102 static inline bool tx_active(struct i2s_dai *i2s)
 103 {
 104         u32 active;
 105
 106         if (!i2s)
 107                 return false;
 108
 109         active = readl(i2s->addr + I2SCON);
 110
 111         if (is_secondary(i2s))
 112                 active &= CON_TXSDMA_ACTIVE;
 113         else
 114                 active &= CON_TXDMA_ACTIVE;
 115
 116         return active ? true : false;
 117 }
 118
 119 /* If the other interface of the controller is transmitting data */
 120 static inline bool other_tx_active(struct i2s_dai *i2s)
 121 {
 122         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
 123
 124         return tx_active(other);
 125 }
 126
 127 /* If any interface of the controller is transmitting data */
 128 static inline bool any_tx_active(struct i2s_dai *i2s)
 129 {
 130         return tx_active(i2s) || other_tx_active(i2s);
 131 }
 132
 133 /* If this interface of the controller is receiving data */
 134 static inline bool rx_active(struct i2s_dai *i2s)
 135 {
 136         u32 active;
 137
 138         if (!i2s)
 139                 return false;
 140
 141         active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE;
 142
 143         return active ? true : false;
 144 }
 145
 146 /* If the other interface of the controller is receiving data */
 147 static inline bool other_rx_active(struct i2s_dai *i2s)
 148 {
 149         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
 150
 151         return rx_active(other);
 152 }
 153
 154 /* If any interface of the controller is receiving data */
 155 static inline bool any_rx_active(struct i2s_dai *i2s)
 156 {
 157         return rx_active(i2s) || other_rx_active(i2s);
 158 }
 159
 160 /* If the other DAI is transmitting or receiving data */
 161 static inline bool other_active(struct i2s_dai *i2s)
 162 {
 163         return other_rx_active(i2s) || other_tx_active(i2s);
 164 }
 165
 166 /* If this DAI is transmitting or receiving data */
 167 static inline bool this_active(struct i2s_dai *i2s)
 168 {
 169         return tx_active(i2s) || rx_active(i2s);
 170 }
 171
 172 /* If the controller is active anyway */
 173 static inline bool any_active(struct i2s_dai *i2s)
 174 {
 175         return this_active(i2s) || other_active(i2s);
 176 }
 177
 178 static inline struct i2s_dai *to_info(struct snd_soc_dai *dai)
 179 {
 180         return snd_soc_dai_get_drvdata(dai);
 181 }
 182
 183 static inline bool is_opened(struct i2s_dai *i2s)
 184 {
 185         if (i2s && (i2s->mode & DAI_OPENED))
 186                 return true;
 187         else
 188                 return false;
 189 }
 190
 191 static inline bool is_manager(struct i2s_dai *i2s)
 192 {
 193         if (is_opened(i2s) && (i2s->mode & DAI_MANAGER))
 194                 return true;
 195         else
 196                 return false;
 197 }
 198
 199 /* Read RCLK of I2S (in multiples of LRCLK) */
 200 static inline unsigned get_rfs(struct i2s_dai *i2s)
 201 {
 202         u32 rfs;
 203
 204         if (i2s->quirks & QUIRK_SUPPORTS_TDM)
 205                 rfs = readl(i2s->addr + I2SMOD) >> EXYNOS5420_MOD_RCLK_SHIFT;
 206         else
 207                 rfs = (readl(i2s->addr + I2SMOD) >> MOD_RCLK_SHIFT);
 208         rfs &= MOD_RCLK_MASK;
 209
 210         switch (rfs) {
 211         case 3: return 768;
 212         case 2: return 384;
 213         case 1: return 512;
 214         default: return 256;
 215         }
 216 }
 217
 218 /* Write RCLK of I2S (in multiples of LRCLK) */
 219 static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
 220 {
 221         u32 mod = readl(i2s->addr + I2SMOD);
 222         int rfs_shift;
 223
 224         if (i2s->quirks & QUIRK_SUPPORTS_TDM)
 225                 rfs_shift = EXYNOS5420_MOD_RCLK_SHIFT;
 226         else
 227                 rfs_shift = MOD_RCLK_SHIFT;
 228         mod &= ~(MOD_RCLK_MASK << rfs_shift);
 229
 230         switch (rfs) {
 231         case 768:
 232                 mod |= (MOD_RCLK_768FS << rfs_shift);
 233                 break;
 234         case 512:
 235                 mod |= (MOD_RCLK_512FS << rfs_shift);
 236                 break;
 237         case 384:
 238                 mod |= (MOD_RCLK_384FS << rfs_shift);
 239                 break;
 240         default:
 241                 mod |= (MOD_RCLK_256FS << rfs_shift);
 242                 break;
 243         }
 244
 245         writel(mod, i2s->addr + I2SMOD);
 246 }
 247
 248 /* Read Bit-Clock of I2S (in multiples of LRCLK) */
 249 static inline unsigned get_bfs(struct i2s_dai *i2s)
 250 {
 251         u32 bfs;
 252
 253         if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
 254                 bfs = readl(i2s->addr + I2SMOD) >> EXYNOS5420_MOD_BCLK_SHIFT;
 255                 bfs &= EXYNOS5420_MOD_BCLK_MASK;
 256         } else {
 257                 bfs =  readl(i2s->addr + I2SMOD) >> MOD_BCLK_SHIFT;
 258                 bfs &= MOD_BCLK_MASK;
 259         }
 260
 261         switch (bfs) {
 262         case 8: return 256;
 263         case 7: return 192;
 264         case 6: return 128;
 265         case 5: return 96;
 266         case 4: return 64;
 267         case 3: return 24;
 268         case 2: return 16;
 269         case 1: return 48;
 270         default: return 32;
 271         }
 272 }
 273
 274 /* Write Bit-Clock of I2S (in multiples of LRCLK) */
 275 static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
 276 {
 277         u32 mod = readl(i2s->addr + I2SMOD);
 278         int bfs_shift;
 279         int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM;
 280
 281         if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
 282                 bfs_shift = EXYNOS5420_MOD_BCLK_SHIFT;
 283                 mod &= ~(EXYNOS5420_MOD_BCLK_MASK << bfs_shift);
 284         } else {
 285                 bfs_shift = MOD_BCLK_SHIFT;
 286                 mod &= ~(MOD_BCLK_MASK << bfs_shift);
 287         }
 288
 289         /* Non-TDM I2S controllers do not support BCLK > 48 * FS */
 290         if (!tdm && bfs > 48) {
 291                 dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n");
 292                 return;
 293         }
 294
 295         switch (bfs) {
 296         case 48:
 297                 mod |= (MOD_BCLK_48FS << bfs_shift);
 298                 break;
 299         case 32:
 300                 mod |= (MOD_BCLK_32FS << bfs_shift);
 301                 break;
 302         case 24:
 303                 mod |= (MOD_BCLK_24FS << bfs_shift);
 304                 break;
 305         case 16:
 306                 mod |= (MOD_BCLK_16FS << bfs_shift);
 307                 break;
 308         case 64:
 309                 mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift);
 310                 break;
 311         case 96:
 312                 mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift);
 313                 break;
 314         case 128:
 315                 mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift);
 316                 break;
 317         case 192:
 318                 mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift);
 319                 break;
 320         case 256:
 321                 mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift);
 322                 break;
 323         default:
 324                 dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n");
 325                 return;
 326         }
 327
 328         writel(mod, i2s->addr + I2SMOD);
 329 }
 330
 331 /* Sample-Size */
 332 static inline int get_blc(struct i2s_dai *i2s)
 333 {
 334         int blc = readl(i2s->addr + I2SMOD);
 335
 336         blc = (blc >> 13) & 0x3;
 337
 338         switch (blc) {
 339         case 2: return 24;
 340         case 1: return 8;
 341         default: return 16;
 342         }
 343 }
 344
 345 /* TX Channel Control */
 346 static void i2s_txctrl(struct i2s_dai *i2s, int on)
 347 {
 348         void __iomem *addr = i2s->addr;
 349         u32 con = readl(addr + I2SCON);
 350         u32 mod = readl(addr + I2SMOD) & ~MOD_MASK;
 351
 352         if (on) {
 353                 con |= CON_ACTIVE;
 354                 con &= ~CON_TXCH_PAUSE;
 355
 356                 if (is_secondary(i2s)) {
 357                         con |= CON_TXSDMA_ACTIVE;
 358                         con &= ~CON_TXSDMA_PAUSE;
 359                 } else {
 360                         con |= CON_TXDMA_ACTIVE;
 361                         con &= ~CON_TXDMA_PAUSE;
 362                 }
 363
 364                 if (any_rx_active(i2s))
 365                         mod |= MOD_TXRX;
 366                 else
 367                         mod |= MOD_TXONLY;
 368         } else {
 369                 if (is_secondary(i2s)) {
 370                         con |=  CON_TXSDMA_PAUSE;
 371                         con &= ~CON_TXSDMA_ACTIVE;
 372                 } else {
 373                         con |=  CON_TXDMA_PAUSE;
 374                         con &= ~CON_TXDMA_ACTIVE;
 375                 }
 376
 377                 if (other_tx_active(i2s)) {
 378                         writel(con, addr + I2SCON);
 379                         return;
 380                 }
 381
 382                 con |=  CON_TXCH_PAUSE;
 383
 384                 if (any_rx_active(i2s))
 385                         mod |= MOD_RXONLY;
 386                 else
 387                         con &= ~CON_ACTIVE;
 388         }
 389
 390         writel(mod, addr + I2SMOD);
 391         writel(con, addr + I2SCON);
 392 }
 393
 394 /* RX Channel Control */
 395 static void i2s_rxctrl(struct i2s_dai *i2s, int on)
 396 {
 397         void __iomem *addr = i2s->addr;
 398         u32 con = readl(addr + I2SCON);
 399         u32 mod = readl(addr + I2SMOD) & ~MOD_MASK;
 400
 401         if (on) {
 402                 con |= CON_RXDMA_ACTIVE | CON_ACTIVE;
 403                 con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE);
 404
 405                 if (any_tx_active(i2s))
 406                         mod |= MOD_TXRX;
 407                 else
 408                         mod |= MOD_RXONLY;
 409         } else {
 410                 con |=  CON_RXDMA_PAUSE | CON_RXCH_PAUSE;
 411                 con &= ~CON_RXDMA_ACTIVE;
 412
 413                 if (any_tx_active(i2s))
 414                         mod |= MOD_TXONLY;
 415                 else
 416                         con &= ~CON_ACTIVE;
 417         }
 418
 419         writel(mod, addr + I2SMOD);
 420         writel(con, addr + I2SCON);
 421 }
 422
 423 /* Flush FIFO of an interface */
 424 static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush)
 425 {
 426         void __iomem *fic;
 427         u32 val;
 428
 429         if (!i2s)
 430                 return;
 431
 432         if (is_secondary(i2s))
 433                 fic = i2s->addr + I2SFICS;
 434         else
 435                 fic = i2s->addr + I2SFIC;
 436
 437         /* Flush the FIFO */
 438         writel(readl(fic) | flush, fic);
 439
 440         /* Be patient */
 441         val = msecs_to_loops(1) / 1000; /* 1 usec */
 442         while (--val)
 443                 cpu_relax();
 444
 445         writel(readl(fic) & ~flush, fic);
 446 }
 447
 448 static int i2s_set_sysclk(struct snd_soc_dai *dai,
 449           int clk_id, unsigned int rfs, int dir)
 450 {
 451         struct i2s_dai *i2s = to_info(dai);
 452         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
 453         u32 mod = readl(i2s->addr + I2SMOD);
 454
 455         switch (clk_id) {
 456         case SAMSUNG_I2S_CDCLK:
 457                 /* Shouldn't matter in GATING(CLOCK_IN) mode */
 458                 if (dir == SND_SOC_CLOCK_IN)
 459                         rfs = 0;
 460
 461                 if ((rfs && other->rfs && (other->rfs != rfs)) ||
 462                                 (any_active(i2s) &&
 463                                 (((dir == SND_SOC_CLOCK_IN)
 464                                         && !(mod & MOD_CDCLKCON)) ||
 465                                 ((dir == SND_SOC_CLOCK_OUT)
 466                                         && (mod & MOD_CDCLKCON))))) {
 467                         dev_err(&i2s->pdev->dev,
 468                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 469                         return -EAGAIN;
 470                 }
 471
 472                 if (dir == SND_SOC_CLOCK_IN)
 473                         mod |= MOD_CDCLKCON;
 474                 else
 475                         mod &= ~MOD_CDCLKCON;
 476
 477                 i2s->rfs = rfs;
 478                 break;
 479
 480         case SAMSUNG_I2S_RCLKSRC_0: /* clock corrsponding to IISMOD[10] := 0 */
 481         case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */
 482                 if ((i2s->quirks & QUIRK_NO_MUXPSR)
 483                                 || (clk_id == SAMSUNG_I2S_RCLKSRC_0))
 484                         clk_id = 0;
 485                 else
 486                         clk_id = 1;
 487
 488                 if (!any_active(i2s)) {
 489                         if (i2s->op_clk) {
 490                                 if ((clk_id && !(mod & MOD_IMS_SYSMUX)) ||
 491                                         (!clk_id && (mod & MOD_IMS_SYSMUX))) {
 492                                         clk_disable_unprepare(i2s->op_clk);
 493                                         clk_put(i2s->op_clk);
 494                                 } else {
 495                                         i2s->rclk_srcrate =
 496                                                 clk_get_rate(i2s->op_clk);
 497                                         return 0;
 498                                 }
 499                         }
 500
 501                         if (clk_id)
 502                                 i2s->op_clk = clk_get(&i2s->pdev->dev,
 503                                                 "i2s_opclk1");
 504                         else
 505                                 i2s->op_clk = clk_get(&i2s->pdev->dev,
 506                                                 "i2s_opclk0");
 507                         clk_prepare_enable(i2s->op_clk);
 508                         i2s->rclk_srcrate = clk_get_rate(i2s->op_clk);
 509
 510                         /* Over-ride the other's */
 511                         if (other) {
 512                                 other->op_clk = i2s->op_clk;
 513                                 other->rclk_srcrate = i2s->rclk_srcrate;
 514                         }
 515                 } else if ((!clk_id && (mod & MOD_IMS_SYSMUX))
 516                                 || (clk_id && !(mod & MOD_IMS_SYSMUX))) {
 517                         dev_err(&i2s->pdev->dev,
 518                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 519                         return -EAGAIN;
 520                 } else {
 521                         /* Call can't be on the active DAI */
 522                         i2s->op_clk = other->op_clk;
 523                         i2s->rclk_srcrate = other->rclk_srcrate;
 524                         return 0;
 525                 }
 526
 527                 if (clk_id == 0)
 528                         mod &= ~MOD_IMS_SYSMUX;
 529                 else
 530                         mod |= MOD_IMS_SYSMUX;
 531                 break;
 532
 533         default:
 534                 dev_err(&i2s->pdev->dev, "We don't serve that!\n");
 535                 return -EINVAL;
 536         }
 537
 538         writel(mod, i2s->addr + I2SMOD);
 539
 540         return 0;
 541 }
 542
 543 static int i2s_set_fmt(struct snd_soc_dai *dai,
 544         unsigned int fmt)
 545 {
 546         struct i2s_dai *i2s = to_info(dai);
 547         u32 mod = readl(i2s->addr + I2SMOD);
 548         int lrp_shift, sdf_shift, sdf_mask, lrp_rlow;
 549         u32 tmp = 0;
 550
 551         if (i2s->quirks & QUIRK_SUPPORTS_TDM) {
 552                 lrp_shift = EXYNOS5420_MOD_LRP_SHIFT;
 553                 sdf_shift = EXYNOS5420_MOD_SDF_SHIFT;
 554         } else {
 555                 lrp_shift = MOD_LRP_SHIFT;
 556                 sdf_shift = MOD_SDF_SHIFT;
 557         }
 558
 559         sdf_mask = MOD_SDF_MASK << sdf_shift;
 560         lrp_rlow = MOD_LR_RLOW << lrp_shift;
 561
 562         /* Format is priority */
 563         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 564         case SND_SOC_DAIFMT_RIGHT_J:
 565                 tmp |= lrp_rlow;
 566                 tmp |= (MOD_SDF_MSB << sdf_shift);
 567                 break;
 568         case SND_SOC_DAIFMT_LEFT_J:
 569                 tmp |= lrp_rlow;
 570                 tmp |= (MOD_SDF_LSB << sdf_shift);
 571                 break;
 572         case SND_SOC_DAIFMT_I2S:
 573                 tmp |= (MOD_SDF_IIS << sdf_shift);
 574                 break;
 575         default:
 576                 dev_err(&i2s->pdev->dev, "Format not supported\n");
 577                 return -EINVAL;
 578         }
 579
 580         /*
 581          * INV flag is relative to the FORMAT flag - if set it simply
 582          * flips the polarity specified by the Standard
 583          */
 584         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 585         case SND_SOC_DAIFMT_NB_NF:
 586                 break;
 587         case SND_SOC_DAIFMT_NB_IF:
 588                 if (tmp & lrp_rlow)
 589                         tmp &= ~lrp_rlow;
 590                 else
 591                         tmp |= lrp_rlow;
 592                 break;
 593         default:
 594                 dev_err(&i2s->pdev->dev, "Polarity not supported\n");
 595                 return -EINVAL;
 596         }
 597
 598         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 599         case SND_SOC_DAIFMT_CBM_CFM:
 600                 tmp |= MOD_SLAVE;
 601                 break;
 602         case SND_SOC_DAIFMT_CBS_CFS:
 603                 /* Set default source clock in Master mode */
 604                 if (i2s->rclk_srcrate == 0)
 605                         i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0,
 606                                                         0, SND_SOC_CLOCK_IN);
 607                 break;
 608         default:
 609                 dev_err(&i2s->pdev->dev, "master/slave format not supported\n");
 610                 return -EINVAL;
 611         }
 612
 613         /*
 614          * Don't change the I2S mode if any controller is active on this
 615          * channel.
 616          */
 617         if (any_active(i2s) &&
 618                 ((mod & (sdf_mask | lrp_rlow | MOD_SLAVE)) != tmp)) {
 619                 dev_err(&i2s->pdev->dev,
 620                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 621                 return -EAGAIN;
 622         }
 623
 624         mod &= ~(sdf_mask | lrp_rlow | MOD_SLAVE);
 625         mod |= tmp;
 626         writel(mod, i2s->addr + I2SMOD);
 627
 628         return 0;
 629 }
 630
 631 static int i2s_hw_params(struct snd_pcm_substream *substream,
 632         struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 633 {
 634         struct i2s_dai *i2s = to_info(dai);
 635         u32 mod = readl(i2s->addr + I2SMOD);
 636
 637         if (!is_secondary(i2s))
 638                 mod &= ~(MOD_DC2_EN | MOD_DC1_EN);
 639
 640         switch (params_channels(params)) {
 641         case 6:
 642                 mod |= MOD_DC2_EN;
 643         case 4:
 644                 mod |= MOD_DC1_EN;
 645                 break;
 646         case 2:
 647                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 648                         i2s->dma_playback.dma_size = 4;
 649                 else
 650                         i2s->dma_capture.dma_size = 4;
 651                 break;
 652         case 1:
 653                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 654                         i2s->dma_playback.dma_size = 2;
 655                 else
 656                         i2s->dma_capture.dma_size = 2;
 657
 658                 break;
 659         default:
 660                 dev_err(&i2s->pdev->dev, "%d channels not supported\n",
 661                                 params_channels(params));
 662                 return -EINVAL;
 663         }
 664
 665         if (is_secondary(i2s))
 666                 mod &= ~MOD_BLCS_MASK;
 667         else
 668                 mod &= ~MOD_BLCP_MASK;
 669
 670         if (is_manager(i2s))
 671                 mod &= ~MOD_BLC_MASK;
 672
 673         switch (params_format(params)) {
 674         case SNDRV_PCM_FORMAT_S8:
 675                 if (is_secondary(i2s))
 676                         mod |= MOD_BLCS_8BIT;
 677                 else
 678                         mod |= MOD_BLCP_8BIT;
 679                 if (is_manager(i2s))
 680                         mod |= MOD_BLC_8BIT;
 681                 break;
 682         case SNDRV_PCM_FORMAT_S16_LE:
 683                 if (is_secondary(i2s))
 684                         mod |= MOD_BLCS_16BIT;
 685                 else
 686                         mod |= MOD_BLCP_16BIT;
 687                 if (is_manager(i2s))
 688                         mod |= MOD_BLC_16BIT;
 689                 break;
 690         case SNDRV_PCM_FORMAT_S24_LE:
 691                 if (is_secondary(i2s))
 692                         mod |= MOD_BLCS_24BIT;
 693                 else
 694                         mod |= MOD_BLCP_24BIT;
 695                 if (is_manager(i2s))
 696                         mod |= MOD_BLC_24BIT;
 697                 break;
 698         default:
 699                 dev_err(&i2s->pdev->dev, "Format(%d) not supported\n",
 700                                 params_format(params));
 701                 return -EINVAL;
 702         }
 703         writel(mod, i2s->addr + I2SMOD);
 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                 goto probe_exit;
 951
 952         i2s->addr = ioremap(i2s->base, 0x100);
 953         if (i2s->addr == NULL) {
 954                 dev_err(&i2s->pdev->dev, "cannot ioremap registers\n");
 955                 return -ENXIO;
 956         }
 957
 958         i2s->clk = clk_get(&i2s->pdev->dev, "iis");
 959         if (IS_ERR(i2s->clk)) {
 960                 dev_err(&i2s->pdev->dev, "failed to get i2s_clock\n");
 961                 iounmap(i2s->addr);
 962                 return -ENOENT;
 963         }
 964         clk_prepare_enable(i2s->clk);
 965
 966         snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
 967
 968         if (other) {
 969                 other->addr = i2s->addr;
 970                 other->clk = i2s->clk;
 971         }
 972
 973         if (i2s->quirks & QUIRK_NEED_RSTCLR)
 974                 writel(CON_RSTCLR, i2s->addr + I2SCON);
 975
 976         if (i2s->quirks & QUIRK_SEC_DAI)
 977                 idma_reg_addr_init(i2s->addr,
 978                                         i2s->sec_dai->idma_playback.dma_addr);
 979
 980 probe_exit:
 981         /* Reset any constraint on RFS and BFS */
 982         i2s->rfs = 0;
 983         i2s->bfs = 0;
 984         i2s_txctrl(i2s, 0);
 985         i2s_rxctrl(i2s, 0);
 986         i2s_fifo(i2s, FIC_TXFLUSH);
 987         i2s_fifo(other, FIC_TXFLUSH);
 988         i2s_fifo(i2s, FIC_RXFLUSH);
 989
 990         /* Gate CDCLK by default */
 991         if (!is_opened(other))
 992                 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK,
 993                                 0, SND_SOC_CLOCK_IN);
 994
 995         return 0;
 996 }
 997
 998 static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
 999 {
1000         struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai);
1001         struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
1002
1003         if (!other || !other->clk) {
1004
1005                 if (i2s->quirks & QUIRK_NEED_RSTCLR)
1006                         writel(0, i2s->addr + I2SCON);
1007
1008                 clk_disable_unprepare(i2s->clk);
1009                 clk_put(i2s->clk);
1010
1011                 iounmap(i2s->addr);
1012         }
1013
1014         i2s->clk = NULL;
1015
1016         return 0;
1017 }
1018
1019 static const struct snd_soc_dai_ops samsung_i2s_dai_ops = {
1020         .trigger = i2s_trigger,
1021         .hw_params = i2s_hw_params,
1022         .set_fmt = i2s_set_fmt,
1023         .set_clkdiv = i2s_set_clkdiv,
1024         .set_sysclk = i2s_set_sysclk,
1025         .startup = i2s_startup,
1026         .shutdown = i2s_shutdown,
1027         .delay = i2s_delay,
1028 };
1029
1030 static const struct snd_soc_component_driver samsung_i2s_component = {
1031         .name           = "samsung-i2s",
1032 };
1033
1034 #define SAMSUNG_I2S_RATES       SNDRV_PCM_RATE_8000_96000
1035
1036 #define SAMSUNG_I2S_FMTS        (SNDRV_PCM_FMTBIT_S8 | \
1037                                         SNDRV_PCM_FMTBIT_S16_LE | \
1038                                         SNDRV_PCM_FMTBIT_S24_LE)
1039
1040 static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec)
1041 {
1042         struct i2s_dai *i2s;
1043         int ret;
1044
1045         i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL);
1046         if (i2s == NULL)
1047                 return NULL;
1048
1049         i2s->pdev = pdev;
1050         i2s->pri_dai = NULL;
1051         i2s->sec_dai = NULL;
1052         i2s->i2s_dai_drv.symmetric_rates = 1;
1053         i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe;
1054         i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove;
1055         i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops;
1056         i2s->i2s_dai_drv.suspend = i2s_suspend;
1057         i2s->i2s_dai_drv.resume = i2s_resume;
1058         i2s->i2s_dai_drv.playback.channels_min = 1;
1059         i2s->i2s_dai_drv.playback.channels_max = 2;
1060         i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES;
1061         i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS;
1062
1063         if (!sec) {
1064                 i2s->i2s_dai_drv.capture.channels_min = 1;
1065                 i2s->i2s_dai_drv.capture.channels_max = 2;
1066                 i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES;
1067                 i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS;
1068                 dev_set_drvdata(&i2s->pdev->dev, i2s);
1069         } else {        /* Create a new platform_device for Secondary */
1070                 i2s->pdev = platform_device_alloc("samsung-i2s-sec", -1);
1071                 if (!i2s->pdev)
1072                         return NULL;
1073
1074                 i2s->pdev->dev.parent = &pdev->dev;
1075
1076                 platform_set_drvdata(i2s->pdev, i2s);
1077                 ret = platform_device_add(i2s->pdev);
1078                 if (ret < 0)
1079                         return NULL;
1080         }
1081
1082         return i2s;
1083 }
1084
1085 static const struct of_device_id exynos_i2s_match[];
1086
1087 static inline const struct samsung_i2s_dai_data *samsung_i2s_get_driver_data(
1088                                                 struct platform_device *pdev)
1089 {
1090 #ifdef CONFIG_OF
1091         if (pdev->dev.of_node) {
1092                 const struct of_device_id *match;
1093                 match = of_match_node(exynos_i2s_match, pdev->dev.of_node);
1094                 return match->data;
1095         } else
1096 #endif
1097                 return (struct samsung_i2s_dai_data *)
1098                                 platform_get_device_id(pdev)->driver_data;
1099 }
1100
1101 #ifdef CONFIG_PM_RUNTIME
1102 static int i2s_runtime_suspend(struct device *dev)
1103 {
1104         struct i2s_dai *i2s = dev_get_drvdata(dev);
1105
1106         clk_disable_unprepare(i2s->clk);
1107
1108         return 0;
1109 }
1110
1111 static int i2s_runtime_resume(struct device *dev)
1112 {
1113         struct i2s_dai *i2s = dev_get_drvdata(dev);
1114
1115         clk_prepare_enable(i2s->clk);
1116
1117         return 0;
1118 }
1119 #endif /* CONFIG_PM_RUNTIME */
1120
1121 static int samsung_i2s_probe(struct platform_device *pdev)
1122 {
1123         struct i2s_dai *pri_dai, *sec_dai = NULL;
1124         struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data;
1125         struct samsung_i2s *i2s_cfg = NULL;
1126         struct resource *res;
1127         u32 regs_base, quirks = 0, idma_addr = 0;
1128         struct device_node *np = pdev->dev.of_node;
1129         const struct samsung_i2s_dai_data *i2s_dai_data;
1130         int ret = 0;
1131
1132         /* Call during Seconday interface registration */
1133         i2s_dai_data = samsung_i2s_get_driver_data(pdev);
1134
1135         if (i2s_dai_data->dai_type == TYPE_SEC) {
1136                 sec_dai = dev_get_drvdata(&pdev->dev);
1137                 if (!sec_dai) {
1138                         dev_err(&pdev->dev, "Unable to get drvdata\n");
1139                         return -EFAULT;
1140                 }
1141                 devm_snd_soc_register_component(&sec_dai->pdev->dev,
1142                                                 &samsung_i2s_component,
1143                                                 &sec_dai->i2s_dai_drv, 1);
1144                 samsung_asoc_dma_platform_register(&pdev->dev);
1145                 return 0;
1146         }
1147
1148         pri_dai = i2s_alloc_dai(pdev, false);
1149         if (!pri_dai) {
1150                 dev_err(&pdev->dev, "Unable to alloc I2S_pri\n");
1151                 return -ENOMEM;
1152         }
1153
1154         if (!np) {
1155                 res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
1156                 if (!res) {
1157                         dev_err(&pdev->dev,
1158                                 "Unable to get I2S-TX dma resource\n");
1159                         return -ENXIO;
1160                 }
1161                 pri_dai->dma_playback.channel = res->start;
1162
1163                 res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
1164                 if (!res) {
1165                         dev_err(&pdev->dev,
1166                                 "Unable to get I2S-RX dma resource\n");
1167                         return -ENXIO;
1168                 }
1169                 pri_dai->dma_capture.channel = res->start;
1170
1171                 if (i2s_pdata == NULL) {
1172                         dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n");
1173                         return -EINVAL;
1174                 }
1175
1176                 if (&i2s_pdata->type)
1177                         i2s_cfg = &i2s_pdata->type.i2s;
1178
1179                 if (i2s_cfg) {
1180                         quirks = i2s_cfg->quirks;
1181                         idma_addr = i2s_cfg->idma_addr;
1182                 }
1183         } else {
1184                 quirks = i2s_dai_data->quirks;
1185                 if (of_property_read_u32(np, "samsung,idma-addr",
1186                                          &idma_addr)) {
1187                         if (quirks & QUIRK_SEC_DAI) {
1188                                 dev_err(&pdev->dev, "idma address is not"\
1189                                                 "specified");
1190                                 return -EINVAL;
1191                         }
1192                 }
1193         }
1194
1195         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1196         if (!res) {
1197                 dev_err(&pdev->dev, "Unable to get I2S SFR address\n");
1198                 return -ENXIO;
1199         }
1200
1201         if (!request_mem_region(res->start, resource_size(res),
1202                                                         "samsung-i2s")) {
1203                 dev_err(&pdev->dev, "Unable to request SFR region\n");
1204                 return -EBUSY;
1205         }
1206         regs_base = res->start;
1207
1208         pri_dai->dma_playback.dma_addr = regs_base + I2STXD;
1209         pri_dai->dma_capture.dma_addr = regs_base + I2SRXD;
1210         pri_dai->dma_playback.client =
1211                 (struct s3c2410_dma_client *)&pri_dai->dma_playback;
1212         pri_dai->dma_playback.ch_name = "tx";
1213         pri_dai->dma_capture.client =
1214                 (struct s3c2410_dma_client *)&pri_dai->dma_capture;
1215         pri_dai->dma_capture.ch_name = "rx";
1216         pri_dai->dma_playback.dma_size = 4;
1217         pri_dai->dma_capture.dma_size = 4;
1218         pri_dai->base = regs_base;
1219         pri_dai->quirks = quirks;
1220
1221         if (quirks & QUIRK_PRI_6CHAN)
1222                 pri_dai->i2s_dai_drv.playback.channels_max = 6;
1223
1224         if (quirks & QUIRK_SEC_DAI) {
1225                 sec_dai = i2s_alloc_dai(pdev, true);
1226                 if (!sec_dai) {
1227                         dev_err(&pdev->dev, "Unable to alloc I2S_sec\n");
1228                         ret = -ENOMEM;
1229                         goto err;
1230                 }
1231                 sec_dai->dma_playback.dma_addr = regs_base + I2STXDS;
1232                 sec_dai->dma_playback.client =
1233                         (struct s3c2410_dma_client *)&sec_dai->dma_playback;
1234                 sec_dai->dma_playback.ch_name = "tx-sec";
1235
1236                 if (!np) {
1237                         res = platform_get_resource(pdev, IORESOURCE_DMA, 2);
1238                         if (res)
1239                                 sec_dai->dma_playback.channel = res->start;
1240                 }
1241
1242                 sec_dai->dma_playback.dma_size = 4;
1243                 sec_dai->base = regs_base;
1244                 sec_dai->quirks = quirks;
1245                 sec_dai->idma_playback.dma_addr = idma_addr;
1246                 sec_dai->pri_dai = pri_dai;
1247                 pri_dai->sec_dai = sec_dai;
1248         }
1249
1250         if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
1251                 dev_err(&pdev->dev, "Unable to configure gpio\n");
1252                 ret = -EINVAL;
1253                 goto err;
1254         }
1255
1256         devm_snd_soc_register_component(&pri_dai->pdev->dev,
1257                                         &samsung_i2s_component,
1258                                         &pri_dai->i2s_dai_drv, 1);
1259
1260         pm_runtime_enable(&pdev->dev);
1261
1262         samsung_asoc_dma_platform_register(&pdev->dev);
1263
1264         return 0;
1265 err:
1266         release_mem_region(regs_base, resource_size(res));
1267
1268         return ret;
1269 }
1270
1271 static int samsung_i2s_remove(struct platform_device *pdev)
1272 {
1273         struct i2s_dai *i2s, *other;
1274         struct resource *res;
1275
1276         i2s = dev_get_drvdata(&pdev->dev);
1277         other = i2s->pri_dai ? : i2s->sec_dai;
1278
1279         if (other) {
1280                 other->pri_dai = NULL;
1281                 other->sec_dai = NULL;
1282         } else {
1283                 pm_runtime_disable(&pdev->dev);
1284                 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1285                 if (res)
1286                         release_mem_region(res->start, resource_size(res));
1287         }
1288
1289         i2s->pri_dai = NULL;
1290         i2s->sec_dai = NULL;
1291
1292         samsung_asoc_dma_platform_unregister(&pdev->dev);
1293
1294         return 0;
1295 }
1296
1297 static const struct samsung_i2s_dai_data i2sv3_dai_type = {
1298         .dai_type = TYPE_PRI,
1299         .quirks = QUIRK_NO_MUXPSR,
1300 };
1301
1302 static const struct samsung_i2s_dai_data i2sv5_dai_type = {
1303         .dai_type = TYPE_PRI,
1304         .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR,
1305 };
1306
1307 static const struct samsung_i2s_dai_data i2sv6_dai_type = {
1308         .dai_type = TYPE_PRI,
1309         .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1310                         QUIRK_SUPPORTS_TDM,
1311 };
1312
1313 static const struct samsung_i2s_dai_data samsung_dai_type_pri = {
1314         .dai_type = TYPE_PRI,
1315 };
1316
1317 static const struct samsung_i2s_dai_data samsung_dai_type_sec = {
1318         .dai_type = TYPE_SEC,
1319 };
1320
1321 static struct platform_device_id samsung_i2s_driver_ids[] = {
1322         {
1323                 .name           = "samsung-i2s",
1324                 .driver_data    = (kernel_ulong_t)&samsung_dai_type_pri,
1325         }, {
1326                 .name           = "samsung-i2s-sec",
1327                 .driver_data    = (kernel_ulong_t)&samsung_dai_type_sec,
1328         },
1329         {},
1330 };
1331 MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids);
1332
1333 #ifdef CONFIG_OF
1334 static const struct of_device_id exynos_i2s_match[] = {
1335         {
1336                 .compatible = "samsung,s3c6410-i2s",
1337                 .data = &i2sv3_dai_type,
1338         }, {
1339                 .compatible = "samsung,s5pv210-i2s",
1340                 .data = &i2sv5_dai_type,
1341         }, {
1342                 .compatible = "samsung,exynos5420-i2s",
1343                 .data = &i2sv6_dai_type,
1344         },
1345         {},
1346 };
1347 MODULE_DEVICE_TABLE(of, exynos_i2s_match);
1348 #endif
1349
1350 static const struct dev_pm_ops samsung_i2s_pm = {
1351         SET_RUNTIME_PM_OPS(i2s_runtime_suspend,
1352                                 i2s_runtime_resume, NULL)
1353 };
1354
1355 static struct platform_driver samsung_i2s_driver = {
1356         .probe  = samsung_i2s_probe,
1357         .remove = samsung_i2s_remove,
1358         .id_table = samsung_i2s_driver_ids,
1359         .driver = {
1360                 .name = "samsung-i2s",
1361                 .owner = THIS_MODULE,
1362                 .of_match_table = of_match_ptr(exynos_i2s_match),
1363                 .pm = &samsung_i2s_pm,
1364         },
1365 };
1366
1367 module_platform_driver(samsung_i2s_driver);
1368
1369 /* Module information */
1370 MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>");
1371 MODULE_DESCRIPTION("Samsung I2S Interface");
1372 MODULE_ALIAS("platform:samsung-i2s");
1373 MODULE_LICENSE("GPL");