sound/soc/samsung/i2s.c

   1 /* sound/soc/samsung/i2s.c
   2  *
   3  * ALSA SoC Audio Layer - Samsung I2S Controller driver
   4  *
   5  * Copyright (c) 2010 Samsung Electronics Co. Ltd.
   6  *      Jaswinder Singh <jassisinghbrar@gmail.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <dt-bindings/sound/samsung-i2s.h>
  14 #include <linux/delay.h>
  15 #include <linux/slab.h>
  16 #include <linux/clk.h>
  17 #include <linux/clk-provider.h>
  18 #include <linux/io.h>
  19 #include <linux/module.h>
  20 #include <linux/of.h>
  21 #include <linux/of_device.h>
  22 #include <linux/of_gpio.h>
  23 #include <linux/pm_runtime.h>
  24
  25 #include <sound/soc.h>
  26 #include <sound/pcm_params.h>
  27
  28 #include <linux/platform_data/asoc-s3c.h>
  29
  30 #include "dma.h"
  31 #include "idma.h"
  32 #include "i2s.h"
  33 #include "i2s-regs.h"
  34
  35 #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
  36
  37 enum samsung_dai_type {
  38         TYPE_PRI,
  39         TYPE_SEC,
  40 };
  41
  42 struct samsung_i2s_variant_regs {
  43         unsigned int    bfs_off;
  44         unsigned int    rfs_off;
  45         unsigned int    sdf_off;
  46         unsigned int    txr_off;
  47         unsigned int    rclksrc_off;
  48         unsigned int    mss_off;
  49         unsigned int    cdclkcon_off;
  50         unsigned int    lrp_off;
  51         unsigned int    bfs_mask;
  52         unsigned int    rfs_mask;
  53         unsigned int    ftx0cnt_off;
  54 };
  55
  56 struct samsung_i2s_dai_data {
  57         int dai_type;
  58         u32 quirks;
  59         const struct samsung_i2s_variant_regs *i2s_variant_regs;
  60 };
  61
  62 struct i2s_dai {
  63         /* Platform device for this DAI */
  64         struct platform_device *pdev;
  65         /* Memory mapped SFR region */
  66         void __iomem    *addr;
  67         /* Rate of RCLK source clock */
  68         unsigned long rclk_srcrate;
  69         /* Frame Clock */
  70         unsigned frmclk;
  71         /*
  72          * Specifically requested RCLK,BCLK by MACHINE Driver.
  73          * 0 indicates CPU driver is free to choose any value.
  74          */
  75         unsigned rfs, bfs;
  76         /* I2S Controller's core clock */
  77         struct clk *clk;
  78         /* Clock for generating I2S signals */
  79         struct clk *op_clk;
  80         /* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */
  81         struct i2s_dai *pri_dai;
  82         /* Pointer to the Secondary_Fifo if it has one, NULL otherwise */
  83         struct i2s_dai *sec_dai;
  84 #define DAI_OPENED      (1 << 0) /* Dai is opened */
  85 #define DAI_MANAGER     (1 << 1) /* Dai is the manager */
  86         unsigned mode;
  87         /* Driver for this DAI */
  88         struct snd_soc_dai_driver i2s_dai_drv;
  89         /* DMA parameters */
  90         struct snd_dmaengine_dai_dma_data dma_playback;
  91         struct snd_dmaengine_dai_dma_data dma_capture;
  92         struct snd_dmaengine_dai_dma_data idma_playback;
  93         dma_filter_fn filter;
  94         u32     quirks;
  95         u32     suspend_i2smod;
  96         u32     suspend_i2scon;
  97         u32     suspend_i2spsr;
  98         const struct samsung_i2s_variant_regs *variant_regs;
  99
 100         /* Spinlock protecting access to the device's registers */
 101         spinlock_t spinlock;
 102         spinlock_t *lock;
 103
 104         /* Below fields are only valid if this is the primary FIFO */
 105         struct clk *clk_table[3];
 106         struct clk_onecell_data clk_data;
 107 };
 108
 109 /* Lock for cross i/f checks */
 110 static DEFINE_SPINLOCK(lock);
 111
 112 /* If this is the 'overlay' stereo DAI */
 113 static inline bool is_secondary(struct i2s_dai *i2s)
 114 {
 115         return i2s->pri_dai ? true : false;
 116 }
 117
 118 /* If operating in SoC-Slave mode */
 119 static inline bool is_slave(struct i2s_dai *i2s)
 120 {
 121         u32 mod = readl(i2s->addr + I2SMOD);
 122         return (mod & (1 << i2s->variant_regs->mss_off)) ? true : false;
 123 }
 124
 125 /* If this interface of the controller is transmitting data */
 126 static inline bool tx_active(struct i2s_dai *i2s)
 127 {
 128         u32 active;
 129
 130         if (!i2s)
 131                 return false;
 132
 133         active = readl(i2s->addr + I2SCON);
 134
 135         if (is_secondary(i2s))
 136                 active &= CON_TXSDMA_ACTIVE;
 137         else
 138                 active &= CON_TXDMA_ACTIVE;
 139
 140         return active ? true : false;
 141 }
 142
 143 /* Return pointer to the other DAI */
 144 static inline struct i2s_dai *get_other_dai(struct i2s_dai *i2s)
 145 {
 146         return i2s->pri_dai ? : i2s->sec_dai;
 147 }
 148
 149 /* If the other interface of the controller is transmitting data */
 150 static inline bool other_tx_active(struct i2s_dai *i2s)
 151 {
 152         struct i2s_dai *other = get_other_dai(i2s);
 153
 154         return tx_active(other);
 155 }
 156
 157 /* If any interface of the controller is transmitting data */
 158 static inline bool any_tx_active(struct i2s_dai *i2s)
 159 {
 160         return tx_active(i2s) || other_tx_active(i2s);
 161 }
 162
 163 /* If this interface of the controller is receiving data */
 164 static inline bool rx_active(struct i2s_dai *i2s)
 165 {
 166         u32 active;
 167
 168         if (!i2s)
 169                 return false;
 170
 171         active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE;
 172
 173         return active ? true : false;
 174 }
 175
 176 /* If the other interface of the controller is receiving data */
 177 static inline bool other_rx_active(struct i2s_dai *i2s)
 178 {
 179         struct i2s_dai *other = get_other_dai(i2s);
 180
 181         return rx_active(other);
 182 }
 183
 184 /* If any interface of the controller is receiving data */
 185 static inline bool any_rx_active(struct i2s_dai *i2s)
 186 {
 187         return rx_active(i2s) || other_rx_active(i2s);
 188 }
 189
 190 /* If the other DAI is transmitting or receiving data */
 191 static inline bool other_active(struct i2s_dai *i2s)
 192 {
 193         return other_rx_active(i2s) || other_tx_active(i2s);
 194 }
 195
 196 /* If this DAI is transmitting or receiving data */
 197 static inline bool this_active(struct i2s_dai *i2s)
 198 {
 199         return tx_active(i2s) || rx_active(i2s);
 200 }
 201
 202 /* If the controller is active anyway */
 203 static inline bool any_active(struct i2s_dai *i2s)
 204 {
 205         return this_active(i2s) || other_active(i2s);
 206 }
 207
 208 static inline struct i2s_dai *to_info(struct snd_soc_dai *dai)
 209 {
 210         return snd_soc_dai_get_drvdata(dai);
 211 }
 212
 213 static inline bool is_opened(struct i2s_dai *i2s)
 214 {
 215         if (i2s && (i2s->mode & DAI_OPENED))
 216                 return true;
 217         else
 218                 return false;
 219 }
 220
 221 static inline bool is_manager(struct i2s_dai *i2s)
 222 {
 223         if (is_opened(i2s) && (i2s->mode & DAI_MANAGER))
 224                 return true;
 225         else
 226                 return false;
 227 }
 228
 229 /* Read RCLK of I2S (in multiples of LRCLK) */
 230 static inline unsigned get_rfs(struct i2s_dai *i2s)
 231 {
 232         u32 rfs;
 233         rfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->rfs_off;
 234         rfs &= i2s->variant_regs->rfs_mask;
 235
 236         switch (rfs) {
 237         case 7: return 192;
 238         case 6: return 96;
 239         case 5: return 128;
 240         case 4: return 64;
 241         case 3: return 768;
 242         case 2: return 384;
 243         case 1: return 512;
 244         default: return 256;
 245         }
 246 }
 247
 248 /* Write RCLK of I2S (in multiples of LRCLK) */
 249 static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
 250 {
 251         u32 mod = readl(i2s->addr + I2SMOD);
 252         int rfs_shift = i2s->variant_regs->rfs_off;
 253
 254         mod &= ~(i2s->variant_regs->rfs_mask << rfs_shift);
 255
 256         switch (rfs) {
 257         case 192:
 258                 mod |= (EXYNOS7_MOD_RCLK_192FS << rfs_shift);
 259                 break;
 260         case 96:
 261                 mod |= (EXYNOS7_MOD_RCLK_96FS << rfs_shift);
 262                 break;
 263         case 128:
 264                 mod |= (EXYNOS7_MOD_RCLK_128FS << rfs_shift);
 265                 break;
 266         case 64:
 267                 mod |= (EXYNOS7_MOD_RCLK_64FS << rfs_shift);
 268                 break;
 269         case 768:
 270                 mod |= (MOD_RCLK_768FS << rfs_shift);
 271                 break;
 272         case 512:
 273                 mod |= (MOD_RCLK_512FS << rfs_shift);
 274                 break;
 275         case 384:
 276                 mod |= (MOD_RCLK_384FS << rfs_shift);
 277                 break;
 278         default:
 279                 mod |= (MOD_RCLK_256FS << rfs_shift);
 280                 break;
 281         }
 282
 283         writel(mod, i2s->addr + I2SMOD);
 284 }
 285
 286 /* Read Bit-Clock of I2S (in multiples of LRCLK) */
 287 static inline unsigned get_bfs(struct i2s_dai *i2s)
 288 {
 289         u32 bfs;
 290         bfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->bfs_off;
 291         bfs &= i2s->variant_regs->bfs_mask;
 292
 293         switch (bfs) {
 294         case 8: return 256;
 295         case 7: return 192;
 296         case 6: return 128;
 297         case 5: return 96;
 298         case 4: return 64;
 299         case 3: return 24;
 300         case 2: return 16;
 301         case 1: return 48;
 302         default: return 32;
 303         }
 304 }
 305
 306 /* Write Bit-Clock of I2S (in multiples of LRCLK) */
 307 static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
 308 {
 309         u32 mod = readl(i2s->addr + I2SMOD);
 310         int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM;
 311         int bfs_shift = i2s->variant_regs->bfs_off;
 312
 313         /* Non-TDM I2S controllers do not support BCLK > 48 * FS */
 314         if (!tdm && bfs > 48) {
 315                 dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n");
 316                 return;
 317         }
 318
 319         mod &= ~(i2s->variant_regs->bfs_mask << bfs_shift);
 320
 321         switch (bfs) {
 322         case 48:
 323                 mod |= (MOD_BCLK_48FS << bfs_shift);
 324                 break;
 325         case 32:
 326                 mod |= (MOD_BCLK_32FS << bfs_shift);
 327                 break;
 328         case 24:
 329                 mod |= (MOD_BCLK_24FS << bfs_shift);
 330                 break;
 331         case 16:
 332                 mod |= (MOD_BCLK_16FS << bfs_shift);
 333                 break;
 334         case 64:
 335                 mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift);
 336                 break;
 337         case 96:
 338                 mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift);
 339                 break;
 340         case 128:
 341                 mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift);
 342                 break;
 343         case 192:
 344                 mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift);
 345                 break;
 346         case 256:
 347                 mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift);
 348                 break;
 349         default:
 350                 dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n");
 351                 return;
 352         }
 353
 354         writel(mod, i2s->addr + I2SMOD);
 355 }
 356
 357 /* Sample-Size */
 358 static inline int get_blc(struct i2s_dai *i2s)
 359 {
 360         int blc = readl(i2s->addr + I2SMOD);
 361
 362         blc = (blc >> 13) & 0x3;
 363
 364         switch (blc) {
 365         case 2: return 24;
 366         case 1: return 8;
 367         default: return 16;
 368         }
 369 }
 370
 371 /* TX Channel Control */
 372 static void i2s_txctrl(struct i2s_dai *i2s, int on)
 373 {
 374         void __iomem *addr = i2s->addr;
 375         int txr_off = i2s->variant_regs->txr_off;
 376         u32 con = readl(addr + I2SCON);
 377         u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
 378
 379         if (on) {
 380                 con |= CON_ACTIVE;
 381                 con &= ~CON_TXCH_PAUSE;
 382
 383                 if (is_secondary(i2s)) {
 384                         con |= CON_TXSDMA_ACTIVE;
 385                         con &= ~CON_TXSDMA_PAUSE;
 386                 } else {
 387                         con |= CON_TXDMA_ACTIVE;
 388                         con &= ~CON_TXDMA_PAUSE;
 389                 }
 390
 391                 if (any_rx_active(i2s))
 392                         mod |= 2 << txr_off;
 393                 else
 394                         mod |= 0 << txr_off;
 395         } else {
 396                 if (is_secondary(i2s)) {
 397                         con |=  CON_TXSDMA_PAUSE;
 398                         con &= ~CON_TXSDMA_ACTIVE;
 399                 } else {
 400                         con |=  CON_TXDMA_PAUSE;
 401                         con &= ~CON_TXDMA_ACTIVE;
 402                 }
 403
 404                 if (other_tx_active(i2s)) {
 405                         writel(con, addr + I2SCON);
 406                         return;
 407                 }
 408
 409                 con |=  CON_TXCH_PAUSE;
 410
 411                 if (any_rx_active(i2s))
 412                         mod |= 1 << txr_off;
 413                 else
 414                         con &= ~CON_ACTIVE;
 415         }
 416
 417         writel(mod, addr + I2SMOD);
 418         writel(con, addr + I2SCON);
 419 }
 420
 421 /* RX Channel Control */
 422 static void i2s_rxctrl(struct i2s_dai *i2s, int on)
 423 {
 424         void __iomem *addr = i2s->addr;
 425         int txr_off = i2s->variant_regs->txr_off;
 426         u32 con = readl(addr + I2SCON);
 427         u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
 428
 429         if (on) {
 430                 con |= CON_RXDMA_ACTIVE | CON_ACTIVE;
 431                 con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE);
 432
 433                 if (any_tx_active(i2s))
 434                         mod |= 2 << txr_off;
 435                 else
 436                         mod |= 1 << txr_off;
 437         } else {
 438                 con |=  CON_RXDMA_PAUSE | CON_RXCH_PAUSE;
 439                 con &= ~CON_RXDMA_ACTIVE;
 440
 441                 if (any_tx_active(i2s))
 442                         mod |= 0 << txr_off;
 443                 else
 444                         con &= ~CON_ACTIVE;
 445         }
 446
 447         writel(mod, addr + I2SMOD);
 448         writel(con, addr + I2SCON);
 449 }
 450
 451 /* Flush FIFO of an interface */
 452 static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush)
 453 {
 454         void __iomem *fic;
 455         u32 val;
 456
 457         if (!i2s)
 458                 return;
 459
 460         if (is_secondary(i2s))
 461                 fic = i2s->addr + I2SFICS;
 462         else
 463                 fic = i2s->addr + I2SFIC;
 464
 465         /* Flush the FIFO */
 466         writel(readl(fic) | flush, fic);
 467
 468         /* Be patient */
 469         val = msecs_to_loops(1) / 1000; /* 1 usec */
 470         while (--val)
 471                 cpu_relax();
 472
 473         writel(readl(fic) & ~flush, fic);
 474 }
 475
 476 static int i2s_set_sysclk(struct snd_soc_dai *dai,
 477           int clk_id, unsigned int rfs, int dir)
 478 {
 479         struct i2s_dai *i2s = to_info(dai);
 480         struct i2s_dai *other = get_other_dai(i2s);
 481         const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs;
 482         unsigned int cdcon_mask = 1 << i2s_regs->cdclkcon_off;
 483         unsigned int rsrc_mask = 1 << i2s_regs->rclksrc_off;
 484         u32 mod, mask, val = 0;
 485         unsigned long flags;
 486
 487         spin_lock_irqsave(i2s->lock, flags);
 488         mod = readl(i2s->addr + I2SMOD);
 489         spin_unlock_irqrestore(i2s->lock, flags);
 490
 491         switch (clk_id) {
 492         case SAMSUNG_I2S_OPCLK:
 493                 mask = MOD_OPCLK_MASK;
 494                 val = dir;
 495                 break;
 496         case SAMSUNG_I2S_CDCLK:
 497                 mask = 1 << i2s_regs->cdclkcon_off;
 498                 /* Shouldn't matter in GATING(CLOCK_IN) mode */
 499                 if (dir == SND_SOC_CLOCK_IN)
 500                         rfs = 0;
 501
 502                 if ((rfs && other && other->rfs && (other->rfs != rfs)) ||
 503                                 (any_active(i2s) &&
 504                                 (((dir == SND_SOC_CLOCK_IN)
 505                                         && !(mod & cdcon_mask)) ||
 506                                 ((dir == SND_SOC_CLOCK_OUT)
 507                                         && (mod & cdcon_mask))))) {
 508                         dev_err(&i2s->pdev->dev,
 509                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 510                         return -EAGAIN;
 511                 }
 512
 513                 if (dir == SND_SOC_CLOCK_IN)
 514                         val = 1 << i2s_regs->cdclkcon_off;
 515
 516                 i2s->rfs = rfs;
 517                 break;
 518
 519         case SAMSUNG_I2S_RCLKSRC_0: /* clock corrsponding to IISMOD[10] := 0 */
 520         case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */
 521                 mask = 1 << i2s_regs->rclksrc_off;
 522
 523                 if ((i2s->quirks & QUIRK_NO_MUXPSR)
 524                                 || (clk_id == SAMSUNG_I2S_RCLKSRC_0))
 525                         clk_id = 0;
 526                 else
 527                         clk_id = 1;
 528
 529                 if (!any_active(i2s)) {
 530                         if (i2s->op_clk && !IS_ERR(i2s->op_clk)) {
 531                                 if ((clk_id && !(mod & rsrc_mask)) ||
 532                                         (!clk_id && (mod & rsrc_mask))) {
 533                                         clk_disable_unprepare(i2s->op_clk);
 534                                         clk_put(i2s->op_clk);
 535                                 } else {
 536                                         i2s->rclk_srcrate =
 537                                                 clk_get_rate(i2s->op_clk);
 538                                         return 0;
 539                                 }
 540                         }
 541
 542                         if (clk_id)
 543                                 i2s->op_clk = clk_get(&i2s->pdev->dev,
 544                                                 "i2s_opclk1");
 545                         else
 546                                 i2s->op_clk = clk_get(&i2s->pdev->dev,
 547                                                 "i2s_opclk0");
 548
 549                         if (WARN_ON(IS_ERR(i2s->op_clk)))
 550                                 return PTR_ERR(i2s->op_clk);
 551
 552                         clk_prepare_enable(i2s->op_clk);
 553                         i2s->rclk_srcrate = clk_get_rate(i2s->op_clk);
 554
 555                         /* Over-ride the other's */
 556                         if (other) {
 557                                 other->op_clk = i2s->op_clk;
 558                                 other->rclk_srcrate = i2s->rclk_srcrate;
 559                         }
 560                 } else if ((!clk_id && (mod & rsrc_mask))
 561                                 || (clk_id && !(mod & rsrc_mask))) {
 562                         dev_err(&i2s->pdev->dev,
 563                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 564                         return -EAGAIN;
 565                 } else {
 566                         /* Call can't be on the active DAI */
 567                         i2s->op_clk = other->op_clk;
 568                         i2s->rclk_srcrate = other->rclk_srcrate;
 569                         return 0;
 570                 }
 571
 572                 if (clk_id == 1)
 573                         val = 1 << i2s_regs->rclksrc_off;
 574                 break;
 575         default:
 576                 dev_err(&i2s->pdev->dev, "We don't serve that!\n");
 577                 return -EINVAL;
 578         }
 579
 580         spin_lock_irqsave(i2s->lock, flags);
 581         mod = readl(i2s->addr + I2SMOD);
 582         mod = (mod & ~mask) | val;
 583         writel(mod, i2s->addr + I2SMOD);
 584         spin_unlock_irqrestore(i2s->lock, flags);
 585
 586         return 0;
 587 }
 588
 589 static int i2s_set_fmt(struct snd_soc_dai *dai,
 590         unsigned int fmt)
 591 {
 592         struct i2s_dai *i2s = to_info(dai);
 593         int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave;
 594         u32 mod, tmp = 0;
 595         unsigned long flags;
 596
 597         lrp_shift = i2s->variant_regs->lrp_off;
 598         sdf_shift = i2s->variant_regs->sdf_off;
 599         mod_slave = 1 << i2s->variant_regs->mss_off;
 600
 601         sdf_mask = MOD_SDF_MASK << sdf_shift;
 602         lrp_rlow = MOD_LR_RLOW << lrp_shift;
 603
 604         /* Format is priority */
 605         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 606         case SND_SOC_DAIFMT_RIGHT_J:
 607                 tmp |= lrp_rlow;
 608                 tmp |= (MOD_SDF_MSB << sdf_shift);
 609                 break;
 610         case SND_SOC_DAIFMT_LEFT_J:
 611                 tmp |= lrp_rlow;
 612                 tmp |= (MOD_SDF_LSB << sdf_shift);
 613                 break;
 614         case SND_SOC_DAIFMT_I2S:
 615                 tmp |= (MOD_SDF_IIS << sdf_shift);
 616                 break;
 617         default:
 618                 dev_err(&i2s->pdev->dev, "Format not supported\n");
 619                 return -EINVAL;
 620         }
 621
 622         /*
 623          * INV flag is relative to the FORMAT flag - if set it simply
 624          * flips the polarity specified by the Standard
 625          */
 626         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 627         case SND_SOC_DAIFMT_NB_NF:
 628                 break;
 629         case SND_SOC_DAIFMT_NB_IF:
 630                 if (tmp & lrp_rlow)
 631                         tmp &= ~lrp_rlow;
 632                 else
 633                         tmp |= lrp_rlow;
 634                 break;
 635         default:
 636                 dev_err(&i2s->pdev->dev, "Polarity not supported\n");
 637                 return -EINVAL;
 638         }
 639
 640         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 641         case SND_SOC_DAIFMT_CBM_CFM:
 642                 tmp |= mod_slave;
 643                 break;
 644         case SND_SOC_DAIFMT_CBS_CFS:
 645                 /*
 646                  * Set default source clock in Master mode, only when the
 647                  * CLK_I2S_RCLK_SRC clock is not exposed so we ensure any
 648                  * clock configuration assigned in DT is not overwritten.
 649                  */
 650                 if (i2s->rclk_srcrate == 0 && i2s->clk_data.clks == NULL)
 651                         i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0,
 652                                                         0, SND_SOC_CLOCK_IN);
 653                 break;
 654         default:
 655                 dev_err(&i2s->pdev->dev, "master/slave format not supported\n");
 656                 return -EINVAL;
 657         }
 658
 659         spin_lock_irqsave(i2s->lock, flags);
 660         mod = readl(i2s->addr + I2SMOD);
 661         /*
 662          * Don't change the I2S mode if any controller is active on this
 663          * channel.
 664          */
 665         if (any_active(i2s) &&
 666                 ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) {
 667                 spin_unlock_irqrestore(i2s->lock, flags);
 668                 dev_err(&i2s->pdev->dev,
 669                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 670                 return -EAGAIN;
 671         }
 672
 673         mod &= ~(sdf_mask | lrp_rlow | mod_slave);
 674         mod |= tmp;
 675         writel(mod, i2s->addr + I2SMOD);
 676         spin_unlock_irqrestore(i2s->lock, flags);
 677
 678         return 0;
 679 }
 680
 681 static int i2s_hw_params(struct snd_pcm_substream *substream,
 682         struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 683 {
 684         struct i2s_dai *i2s = to_info(dai);
 685         u32 mod, mask = 0, val = 0;
 686         unsigned long flags;
 687
 688         if (!is_secondary(i2s))
 689                 mask |= (MOD_DC2_EN | MOD_DC1_EN);
 690
 691         switch (params_channels(params)) {
 692         case 6:
 693                 val |= MOD_DC2_EN;
 694         case 4:
 695                 val |= MOD_DC1_EN;
 696                 break;
 697         case 2:
 698                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 699                         i2s->dma_playback.addr_width = 4;
 700                 else
 701                         i2s->dma_capture.addr_width = 4;
 702                 break;
 703         case 1:
 704                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 705                         i2s->dma_playback.addr_width = 2;
 706                 else
 707                         i2s->dma_capture.addr_width = 2;
 708
 709                 break;
 710         default:
 711                 dev_err(&i2s->pdev->dev, "%d channels not supported\n",
 712                                 params_channels(params));
 713                 return -EINVAL;
 714         }
 715
 716         if (is_secondary(i2s))
 717                 mask |= MOD_BLCS_MASK;
 718         else
 719                 mask |= MOD_BLCP_MASK;
 720
 721         if (is_manager(i2s))
 722                 mask |= MOD_BLC_MASK;
 723
 724         switch (params_width(params)) {
 725         case 8:
 726                 if (is_secondary(i2s))
 727                         val |= MOD_BLCS_8BIT;
 728                 else
 729                         val |= MOD_BLCP_8BIT;
 730                 if (is_manager(i2s))
 731                         val |= MOD_BLC_8BIT;
 732                 break;
 733         case 16:
 734                 if (is_secondary(i2s))
 735                         val |= MOD_BLCS_16BIT;
 736                 else
 737                         val |= MOD_BLCP_16BIT;
 738                 if (is_manager(i2s))
 739                         val |= MOD_BLC_16BIT;
 740                 break;
 741         case 24:
 742                 if (is_secondary(i2s))
 743                         val |= MOD_BLCS_24BIT;
 744                 else
 745                         val |= MOD_BLCP_24BIT;
 746                 if (is_manager(i2s))
 747                         val |= MOD_BLC_24BIT;
 748                 break;
 749         default:
 750                 dev_err(&i2s->pdev->dev, "Format(%d) not supported\n",
 751                                 params_format(params));
 752                 return -EINVAL;
 753         }
 754
 755         spin_lock_irqsave(i2s->lock, flags);
 756         mod = readl(i2s->addr + I2SMOD);
 757         mod = (mod & ~mask) | val;
 758         writel(mod, i2s->addr + I2SMOD);
 759         spin_unlock_irqrestore(i2s->lock, flags);
 760
 761         snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
 762
 763         i2s->frmclk = params_rate(params);
 764
 765         return 0;
 766 }
 767
 768 /* We set constraints on the substream acc to the version of I2S */
 769 static int i2s_startup(struct snd_pcm_substream *substream,
 770           struct snd_soc_dai *dai)
 771 {
 772         struct i2s_dai *i2s = to_info(dai);
 773         struct i2s_dai *other = get_other_dai(i2s);
 774         unsigned long flags;
 775
 776         spin_lock_irqsave(&lock, flags);
 777
 778         i2s->mode |= DAI_OPENED;
 779
 780         if (is_manager(other))
 781                 i2s->mode &= ~DAI_MANAGER;
 782         else
 783                 i2s->mode |= DAI_MANAGER;
 784
 785         if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR))
 786                 writel(CON_RSTCLR, i2s->addr + I2SCON);
 787
 788         spin_unlock_irqrestore(&lock, flags);
 789
 790         return 0;
 791 }
 792
 793 static void i2s_shutdown(struct snd_pcm_substream *substream,
 794         struct snd_soc_dai *dai)
 795 {
 796         struct i2s_dai *i2s = to_info(dai);
 797         struct i2s_dai *other = get_other_dai(i2s);
 798         unsigned long flags;
 799
 800         spin_lock_irqsave(&lock, flags);
 801
 802         i2s->mode &= ~DAI_OPENED;
 803         i2s->mode &= ~DAI_MANAGER;
 804
 805         if (is_opened(other))
 806                 other->mode |= DAI_MANAGER;
 807
 808         /* Reset any constraint on RFS and BFS */
 809         i2s->rfs = 0;
 810         i2s->bfs = 0;
 811
 812         spin_unlock_irqrestore(&lock, flags);
 813 }
 814
 815 static int config_setup(struct i2s_dai *i2s)
 816 {
 817         struct i2s_dai *other = get_other_dai(i2s);
 818         unsigned rfs, bfs, blc;
 819         u32 psr;
 820
 821         blc = get_blc(i2s);
 822
 823         bfs = i2s->bfs;
 824
 825         if (!bfs && other)
 826                 bfs = other->bfs;
 827
 828         /* Select least possible multiple(2) if no constraint set */
 829         if (!bfs)
 830                 bfs = blc * 2;
 831
 832         rfs = i2s->rfs;
 833
 834         if (!rfs && other)
 835                 rfs = other->rfs;
 836
 837         if ((rfs == 256 || rfs == 512) && (blc == 24)) {
 838                 dev_err(&i2s->pdev->dev,
 839                         "%d-RFS not supported for 24-blc\n", rfs);
 840                 return -EINVAL;
 841         }
 842
 843         if (!rfs) {
 844                 if (bfs == 16 || bfs == 32)
 845                         rfs = 256;
 846                 else
 847                         rfs = 384;
 848         }
 849
 850         /* If already setup and running */
 851         if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) {
 852                 dev_err(&i2s->pdev->dev,
 853                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 854                 return -EAGAIN;
 855         }
 856
 857         set_bfs(i2s, bfs);
 858         set_rfs(i2s, rfs);
 859
 860         /* Don't bother with PSR in Slave mode */
 861         if (is_slave(i2s))
 862                 return 0;
 863
 864         if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
 865                 struct clk *rclksrc = i2s->clk_table[CLK_I2S_RCLK_SRC];
 866
 867                 if (i2s->rclk_srcrate == 0 && rclksrc && !IS_ERR(rclksrc))
 868                         i2s->rclk_srcrate = clk_get_rate(rclksrc);
 869
 870                 psr = i2s->rclk_srcrate / i2s->frmclk / rfs;
 871                 writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR);
 872                 dev_dbg(&i2s->pdev->dev,
 873                         "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n",
 874                                 i2s->rclk_srcrate, psr, rfs, bfs);
 875         }
 876
 877         return 0;
 878 }
 879
 880 static int i2s_trigger(struct snd_pcm_substream *substream,
 881         int cmd, struct snd_soc_dai *dai)
 882 {
 883         int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
 884         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 885         struct i2s_dai *i2s = to_info(rtd->cpu_dai);
 886         unsigned long flags;
 887
 888         switch (cmd) {
 889         case SNDRV_PCM_TRIGGER_START:
 890         case SNDRV_PCM_TRIGGER_RESUME:
 891         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 892                 spin_lock_irqsave(i2s->lock, flags);
 893
 894                 if (config_setup(i2s)) {
 895                         spin_unlock_irqrestore(i2s->lock, flags);
 896                         return -EINVAL;
 897                 }
 898
 899                 if (capture)
 900                         i2s_rxctrl(i2s, 1);
 901                 else
 902                         i2s_txctrl(i2s, 1);
 903
 904                 spin_unlock_irqrestore(i2s->lock, flags);
 905                 break;
 906         case SNDRV_PCM_TRIGGER_STOP:
 907         case SNDRV_PCM_TRIGGER_SUSPEND:
 908         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 909                 spin_lock_irqsave(i2s->lock, flags);
 910
 911                 if (capture) {
 912                         i2s_rxctrl(i2s, 0);
 913                         i2s_fifo(i2s, FIC_RXFLUSH);
 914                 } else {
 915                         i2s_txctrl(i2s, 0);
 916                         i2s_fifo(i2s, FIC_TXFLUSH);
 917                 }
 918
 919                 spin_unlock_irqrestore(i2s->lock, flags);
 920                 break;
 921         }
 922
 923         return 0;
 924 }
 925
 926 static int i2s_set_clkdiv(struct snd_soc_dai *dai,
 927         int div_id, int div)
 928 {
 929         struct i2s_dai *i2s = to_info(dai);
 930         struct i2s_dai *other = get_other_dai(i2s);
 931
 932         switch (div_id) {
 933         case SAMSUNG_I2S_DIV_BCLK:
 934                 if ((any_active(i2s) && div && (get_bfs(i2s) != div))
 935                         || (other && other->bfs && (other->bfs != div))) {
 936                         dev_err(&i2s->pdev->dev,
 937                                 "%s:%d Other DAI busy\n", __func__, __LINE__);
 938                         return -EAGAIN;
 939                 }
 940                 i2s->bfs = div;
 941                 break;
 942         default:
 943                 dev_err(&i2s->pdev->dev,
 944                         "Invalid clock divider(%d)\n", div_id);
 945                 return -EINVAL;
 946         }
 947
 948         return 0;
 949 }
 950
 951 static snd_pcm_sframes_t
 952 i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 953 {
 954         struct i2s_dai *i2s = to_info(dai);
 955         u32 reg = readl(i2s->addr + I2SFIC);
 956         snd_pcm_sframes_t delay;
 957         const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs;
 958
 959         if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 960                 delay = FIC_RXCOUNT(reg);
 961         else if (is_secondary(i2s))
 962                 delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS));
 963         else
 964                 delay = (reg >> i2s_regs->ftx0cnt_off) & 0x7f;
 965
 966         return delay;
 967 }
 968
 969 #ifdef CONFIG_PM
 970 static int i2s_suspend(struct snd_soc_dai *dai)
 971 {
 972         struct i2s_dai *i2s = to_info(dai);
 973
 974         i2s->suspend_i2smod = readl(i2s->addr + I2SMOD);
 975         i2s->suspend_i2scon = readl(i2s->addr + I2SCON);
 976         i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR);
 977
 978         return 0;
 979 }
 980
 981 static int i2s_resume(struct snd_soc_dai *dai)
 982 {
 983         struct i2s_dai *i2s = to_info(dai);
 984
 985         writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
 986         writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);
 987         writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR);
 988
 989         return 0;
 990 }
 991 #else
 992 #define i2s_suspend NULL
 993 #define i2s_resume  NULL
 994 #endif
 995
 996 static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
 997 {
 998         struct i2s_dai *i2s = to_info(dai);
 999         struct i2s_dai *other = get_other_dai(i2s);
1000         unsigned long flags;
1001
1002         if (is_secondary(i2s)) { /* If this is probe on the secondary DAI */
1003                 snd_soc_dai_init_dma_data(dai, &other->sec_dai->dma_playback,
1004                                            NULL);
1005         } else {
1006                 snd_soc_dai_init_dma_data(dai, &i2s->dma_playback,
1007                                            &i2s->dma_capture);
1008
1009                 if (i2s->quirks & QUIRK_NEED_RSTCLR)
1010                         writel(CON_RSTCLR, i2s->addr + I2SCON);
1011
1012                 if (i2s->quirks & QUIRK_SUPPORTS_IDMA)
1013                         idma_reg_addr_init(i2s->addr,
1014                                         i2s->sec_dai->idma_playback.addr);
1015         }
1016
1017         /* Reset any constraint on RFS and BFS */
1018         i2s->rfs = 0;
1019         i2s->bfs = 0;
1020         i2s->rclk_srcrate = 0;
1021
1022         spin_lock_irqsave(i2s->lock, flags);
1023         i2s_txctrl(i2s, 0);
1024         i2s_rxctrl(i2s, 0);
1025         i2s_fifo(i2s, FIC_TXFLUSH);
1026         i2s_fifo(other, FIC_TXFLUSH);
1027         i2s_fifo(i2s, FIC_RXFLUSH);
1028         spin_unlock_irqrestore(i2s->lock, flags);
1029
1030         /* Gate CDCLK by default */
1031         if (!is_opened(other))
1032                 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK,
1033                                 0, SND_SOC_CLOCK_IN);
1034
1035         return 0;
1036 }
1037
1038 static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
1039 {
1040         struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai);
1041         unsigned long flags;
1042
1043         if (!is_secondary(i2s)) {
1044                 if (i2s->quirks & QUIRK_NEED_RSTCLR) {
1045                         spin_lock_irqsave(i2s->lock, flags);
1046                         writel(0, i2s->addr + I2SCON);
1047                         spin_unlock_irqrestore(i2s->lock, flags);
1048                 }
1049         }
1050
1051         return 0;
1052 }
1053
1054 static const struct snd_soc_dai_ops samsung_i2s_dai_ops = {
1055         .trigger = i2s_trigger,
1056         .hw_params = i2s_hw_params,
1057         .set_fmt = i2s_set_fmt,
1058         .set_clkdiv = i2s_set_clkdiv,
1059         .set_sysclk = i2s_set_sysclk,
1060         .startup = i2s_startup,
1061         .shutdown = i2s_shutdown,
1062         .delay = i2s_delay,
1063 };
1064
1065 static const struct snd_soc_component_driver samsung_i2s_component = {
1066         .name           = "samsung-i2s",
1067 };
1068
1069 #define SAMSUNG_I2S_RATES       SNDRV_PCM_RATE_8000_96000
1070
1071 #define SAMSUNG_I2S_FMTS        (SNDRV_PCM_FMTBIT_S8 | \
1072                                         SNDRV_PCM_FMTBIT_S16_LE | \
1073                                         SNDRV_PCM_FMTBIT_S24_LE)
1074
1075 static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec)
1076 {
1077         struct i2s_dai *i2s;
1078         int ret;
1079
1080         i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL);
1081         if (i2s == NULL)
1082                 return NULL;
1083
1084         i2s->pdev = pdev;
1085         i2s->pri_dai = NULL;
1086         i2s->sec_dai = NULL;
1087         i2s->i2s_dai_drv.symmetric_rates = 1;
1088         i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe;
1089         i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove;
1090         i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops;
1091         i2s->i2s_dai_drv.suspend = i2s_suspend;
1092         i2s->i2s_dai_drv.resume = i2s_resume;
1093         i2s->i2s_dai_drv.playback.channels_min = 1;
1094         i2s->i2s_dai_drv.playback.channels_max = 2;
1095         i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES;
1096         i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS;
1097
1098         if (!sec) {
1099                 i2s->i2s_dai_drv.capture.channels_min = 1;
1100                 i2s->i2s_dai_drv.capture.channels_max = 2;
1101                 i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES;
1102                 i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS;
1103                 dev_set_drvdata(&i2s->pdev->dev, i2s);
1104         } else {        /* Create a new platform_device for Secondary */
1105                 i2s->pdev = platform_device_alloc("samsung-i2s-sec", -1);
1106                 if (!i2s->pdev)
1107                         return NULL;
1108
1109                 i2s->pdev->dev.parent = &pdev->dev;
1110
1111                 platform_set_drvdata(i2s->pdev, i2s);
1112                 ret = platform_device_add(i2s->pdev);
1113                 if (ret < 0)
1114                         return NULL;
1115         }
1116
1117         return i2s;
1118 }
1119
1120 static void i2s_free_sec_dai(struct i2s_dai *i2s)
1121 {
1122         platform_device_del(i2s->pdev);
1123 }
1124
1125 #ifdef CONFIG_PM
1126 static int i2s_runtime_suspend(struct device *dev)
1127 {
1128         struct i2s_dai *i2s = dev_get_drvdata(dev);
1129
1130         clk_disable_unprepare(i2s->clk);
1131
1132         return 0;
1133 }
1134
1135 static int i2s_runtime_resume(struct device *dev)
1136 {
1137         struct i2s_dai *i2s = dev_get_drvdata(dev);
1138
1139         clk_prepare_enable(i2s->clk);
1140
1141         return 0;
1142 }
1143 #endif /* CONFIG_PM */
1144
1145 static void i2s_unregister_clocks(struct i2s_dai *i2s)
1146 {
1147         int i;
1148
1149         for (i = 0; i < i2s->clk_data.clk_num; i++) {
1150                 if (!IS_ERR(i2s->clk_table[i]))
1151                         clk_unregister(i2s->clk_table[i]);
1152         }
1153 }
1154
1155 static void i2s_unregister_clock_provider(struct platform_device *pdev)
1156 {
1157         struct i2s_dai *i2s = dev_get_drvdata(&pdev->dev);
1158
1159         of_clk_del_provider(pdev->dev.of_node);
1160         i2s_unregister_clocks(i2s);
1161 }
1162
1163 static int i2s_register_clock_provider(struct platform_device *pdev)
1164 {
1165         struct device *dev = &pdev->dev;
1166         struct i2s_dai *i2s = dev_get_drvdata(dev);
1167         const char *clk_name[2] = { "i2s_opclk0", "i2s_opclk1" };
1168         const char *p_names[2] = { NULL };
1169         const struct samsung_i2s_variant_regs *reg_info = i2s->variant_regs;
1170         struct clk *rclksrc;
1171         int ret, i;
1172
1173         /* Register the clock provider only if it's expected in the DTB */
1174         if (!of_find_property(dev->of_node, "#clock-cells", NULL))
1175                 return 0;
1176
1177         /* Get the RCLKSRC mux clock parent clock names */
1178         for (i = 0; i < ARRAY_SIZE(p_names); i++) {
1179                 rclksrc = clk_get(dev, clk_name[i]);
1180                 if (IS_ERR(rclksrc))
1181                         continue;
1182                 p_names[i] = __clk_get_name(rclksrc);
1183                 clk_put(rclksrc);
1184         }
1185
1186         if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
1187                 /* Activate the prescaler */
1188                 u32 val = readl(i2s->addr + I2SPSR);
1189                 writel(val | PSR_PSREN, i2s->addr + I2SPSR);
1190
1191                 i2s->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(NULL,
1192                                 "i2s_rclksrc", p_names, ARRAY_SIZE(p_names),
1193                                 CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT,
1194                                 i2s->addr + I2SMOD, reg_info->rclksrc_off,
1195                                 1, 0, i2s->lock);
1196
1197                 i2s->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(NULL,
1198                                 "i2s_presc", "i2s_rclksrc",
1199                                 CLK_SET_RATE_PARENT,
1200                                 i2s->addr + I2SPSR, 8, 6, 0, i2s->lock);
1201
1202                 p_names[0] = "i2s_presc";
1203                 i2s->clk_data.clk_num = 2;
1204         }
1205         of_property_read_string_index(dev->of_node,
1206                                 "clock-output-names", 0, &clk_name[0]);
1207
1208         i2s->clk_table[CLK_I2S_CDCLK] = clk_register_gate(NULL, clk_name[0],
1209                                 p_names[0], CLK_SET_RATE_PARENT,
1210                                 i2s->addr + I2SMOD, reg_info->cdclkcon_off,
1211                                 CLK_GATE_SET_TO_DISABLE, i2s->lock);
1212
1213         i2s->clk_data.clk_num += 1;
1214         i2s->clk_data.clks = i2s->clk_table;
1215
1216         ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
1217                                   &i2s->clk_data);
1218         if (ret < 0) {
1219                 dev_err(dev, "failed to add clock provider: %d\n", ret);
1220                 i2s_unregister_clocks(i2s);
1221         }
1222
1223         return ret;
1224 }
1225
1226 static int samsung_i2s_probe(struct platform_device *pdev)
1227 {
1228         struct i2s_dai *pri_dai, *sec_dai = NULL;
1229         struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data;
1230         struct samsung_i2s *i2s_cfg = NULL;
1231         struct resource *res;
1232         u32 regs_base, quirks = 0, idma_addr = 0;
1233         struct device_node *np = pdev->dev.of_node;
1234         const struct samsung_i2s_dai_data *i2s_dai_data;
1235         int ret;
1236
1237         if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node)
1238                 i2s_dai_data = of_device_get_match_data(&pdev->dev);
1239         else
1240                 i2s_dai_data = (struct samsung_i2s_dai_data *)
1241                                 platform_get_device_id(pdev)->driver_data;
1242
1243         /* Call during the secondary interface registration */
1244         if (i2s_dai_data->dai_type == TYPE_SEC) {
1245                 sec_dai = dev_get_drvdata(&pdev->dev);
1246                 if (!sec_dai) {
1247                         dev_err(&pdev->dev, "Unable to get drvdata\n");
1248                         return -EFAULT;
1249                 }
1250                 ret = samsung_asoc_dma_platform_register(&pdev->dev,
1251                                         sec_dai->filter, "tx-sec", NULL);
1252                 if (ret != 0)
1253                         return ret;
1254
1255                 return devm_snd_soc_register_component(&sec_dai->pdev->dev,
1256                                                 &samsung_i2s_component,
1257                                                 &sec_dai->i2s_dai_drv, 1);
1258         }
1259
1260         pri_dai = i2s_alloc_dai(pdev, false);
1261         if (!pri_dai) {
1262                 dev_err(&pdev->dev, "Unable to alloc I2S_pri\n");
1263                 return -ENOMEM;
1264         }
1265
1266         spin_lock_init(&pri_dai->spinlock);
1267         pri_dai->lock = &pri_dai->spinlock;
1268
1269         if (!np) {
1270                 if (i2s_pdata == NULL) {
1271                         dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n");
1272                         return -EINVAL;
1273                 }
1274
1275                 pri_dai->dma_playback.filter_data = i2s_pdata->dma_playback;
1276                 pri_dai->dma_capture.filter_data = i2s_pdata->dma_capture;
1277                 pri_dai->filter = i2s_pdata->dma_filter;
1278
1279                 if (&i2s_pdata->type)
1280                         i2s_cfg = &i2s_pdata->type.i2s;
1281
1282                 if (i2s_cfg) {
1283                         quirks = i2s_cfg->quirks;
1284                         idma_addr = i2s_cfg->idma_addr;
1285                 }
1286         } else {
1287                 quirks = i2s_dai_data->quirks;
1288                 if (of_property_read_u32(np, "samsung,idma-addr",
1289                                          &idma_addr)) {
1290                         if (quirks & QUIRK_SUPPORTS_IDMA) {
1291                                 dev_info(&pdev->dev, "idma address is not"\
1292                                                 "specified");
1293                         }
1294                 }
1295         }
1296
1297         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1298         pri_dai->addr = devm_ioremap_resource(&pdev->dev, res);
1299         if (IS_ERR(pri_dai->addr))
1300                 return PTR_ERR(pri_dai->addr);
1301
1302         regs_base = res->start;
1303
1304         pri_dai->clk = devm_clk_get(&pdev->dev, "iis");
1305         if (IS_ERR(pri_dai->clk)) {
1306                 dev_err(&pdev->dev, "Failed to get iis clock\n");
1307                 return PTR_ERR(pri_dai->clk);
1308         }
1309
1310         ret = clk_prepare_enable(pri_dai->clk);
1311         if (ret != 0) {
1312                 dev_err(&pdev->dev, "failed to enable clock: %d\n", ret);
1313                 return ret;
1314         }
1315         pri_dai->dma_playback.addr = regs_base + I2STXD;
1316         pri_dai->dma_capture.addr = regs_base + I2SRXD;
1317         pri_dai->dma_playback.chan_name = "tx";
1318         pri_dai->dma_capture.chan_name = "rx";
1319         pri_dai->dma_playback.addr_width = 4;
1320         pri_dai->dma_capture.addr_width = 4;
1321         pri_dai->quirks = quirks;
1322         pri_dai->variant_regs = i2s_dai_data->i2s_variant_regs;
1323
1324         if (quirks & QUIRK_PRI_6CHAN)
1325                 pri_dai->i2s_dai_drv.playback.channels_max = 6;
1326
1327         ret = samsung_asoc_dma_platform_register(&pdev->dev, pri_dai->filter,
1328                                                  NULL, NULL);
1329         if (ret < 0)
1330                 goto err_disable_clk;
1331
1332         if (quirks & QUIRK_SEC_DAI) {
1333                 sec_dai = i2s_alloc_dai(pdev, true);
1334                 if (!sec_dai) {
1335                         dev_err(&pdev->dev, "Unable to alloc I2S_sec\n");
1336                         ret = -ENOMEM;
1337                         goto err_disable_clk;
1338                 }
1339
1340                 sec_dai->lock = &pri_dai->spinlock;
1341                 sec_dai->variant_regs = pri_dai->variant_regs;
1342                 sec_dai->dma_playback.addr = regs_base + I2STXDS;
1343                 sec_dai->dma_playback.chan_name = "tx-sec";
1344
1345                 if (!np) {
1346                         sec_dai->dma_playback.filter_data = i2s_pdata->dma_play_sec;
1347                         sec_dai->filter = i2s_pdata->dma_filter;
1348                 }
1349
1350                 sec_dai->dma_playback.addr_width = 4;
1351                 sec_dai->addr = pri_dai->addr;
1352                 sec_dai->clk = pri_dai->clk;
1353                 sec_dai->quirks = quirks;
1354                 sec_dai->idma_playback.addr = idma_addr;
1355                 sec_dai->pri_dai = pri_dai;
1356                 pri_dai->sec_dai = sec_dai;
1357         }
1358
1359         if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
1360                 dev_err(&pdev->dev, "Unable to configure gpio\n");
1361                 ret = -EINVAL;
1362                 goto err_disable_clk;
1363         }
1364
1365         ret = devm_snd_soc_register_component(&pri_dai->pdev->dev,
1366                                         &samsung_i2s_component,
1367                                         &pri_dai->i2s_dai_drv, 1);
1368         if (ret < 0)
1369                 goto err_free_dai;
1370
1371
1372         pm_runtime_enable(&pdev->dev);
1373
1374         ret = i2s_register_clock_provider(pdev);
1375         if (!ret)
1376                 return 0;
1377
1378         pm_runtime_disable(&pdev->dev);
1379 err_free_dai:
1380         if (sec_dai)
1381                 i2s_free_sec_dai(sec_dai);
1382 err_disable_clk:
1383         clk_disable_unprepare(pri_dai->clk);
1384         return ret;
1385 }
1386
1387 static int samsung_i2s_remove(struct platform_device *pdev)
1388 {
1389         struct i2s_dai *i2s, *other;
1390
1391         i2s = dev_get_drvdata(&pdev->dev);
1392         other = get_other_dai(i2s);
1393
1394         if (other) {
1395                 other->pri_dai = NULL;
1396                 other->sec_dai = NULL;
1397         } else {
1398                 pm_runtime_disable(&pdev->dev);
1399         }
1400
1401         if (!is_secondary(i2s)) {
1402                 i2s_unregister_clock_provider(pdev);
1403                 clk_disable_unprepare(i2s->clk);
1404         }
1405
1406         i2s->pri_dai = NULL;
1407         i2s->sec_dai = NULL;
1408
1409         return 0;
1410 }
1411
1412 static const struct samsung_i2s_variant_regs i2sv3_regs = {
1413         .bfs_off = 1,
1414         .rfs_off = 3,
1415         .sdf_off = 5,
1416         .txr_off = 8,
1417         .rclksrc_off = 10,
1418         .mss_off = 11,
1419         .cdclkcon_off = 12,
1420         .lrp_off = 7,
1421         .bfs_mask = 0x3,
1422         .rfs_mask = 0x3,
1423         .ftx0cnt_off = 8,
1424 };
1425
1426 static const struct samsung_i2s_variant_regs i2sv6_regs = {
1427         .bfs_off = 0,
1428         .rfs_off = 4,
1429         .sdf_off = 6,
1430         .txr_off = 8,
1431         .rclksrc_off = 10,
1432         .mss_off = 11,
1433         .cdclkcon_off = 12,
1434         .lrp_off = 15,
1435         .bfs_mask = 0xf,
1436         .rfs_mask = 0x3,
1437         .ftx0cnt_off = 8,
1438 };
1439
1440 static const struct samsung_i2s_variant_regs i2sv7_regs = {
1441         .bfs_off = 0,
1442         .rfs_off = 4,
1443         .sdf_off = 7,
1444         .txr_off = 9,
1445         .rclksrc_off = 11,
1446         .mss_off = 12,
1447         .cdclkcon_off = 22,
1448         .lrp_off = 15,
1449         .bfs_mask = 0xf,
1450         .rfs_mask = 0x7,
1451         .ftx0cnt_off = 0,
1452 };
1453
1454 static const struct samsung_i2s_variant_regs i2sv5_i2s1_regs = {
1455         .bfs_off = 0,
1456         .rfs_off = 3,
1457         .sdf_off = 6,
1458         .txr_off = 8,
1459         .rclksrc_off = 10,
1460         .mss_off = 11,
1461         .cdclkcon_off = 12,
1462         .lrp_off = 15,
1463         .bfs_mask = 0x7,
1464         .rfs_mask = 0x7,
1465         .ftx0cnt_off = 8,
1466 };
1467
1468 static const struct samsung_i2s_dai_data i2sv3_dai_type = {
1469         .dai_type = TYPE_PRI,
1470         .quirks = QUIRK_NO_MUXPSR,
1471         .i2s_variant_regs = &i2sv3_regs,
1472 };
1473
1474 static const struct samsung_i2s_dai_data i2sv5_dai_type = {
1475         .dai_type = TYPE_PRI,
1476         .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1477                         QUIRK_SUPPORTS_IDMA,
1478         .i2s_variant_regs = &i2sv3_regs,
1479 };
1480
1481 static const struct samsung_i2s_dai_data i2sv6_dai_type = {
1482         .dai_type = TYPE_PRI,
1483         .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1484                         QUIRK_SUPPORTS_TDM | QUIRK_SUPPORTS_IDMA,
1485         .i2s_variant_regs = &i2sv6_regs,
1486 };
1487
1488 static const struct samsung_i2s_dai_data i2sv7_dai_type = {
1489         .dai_type = TYPE_PRI,
1490         .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR |
1491                         QUIRK_SUPPORTS_TDM,
1492         .i2s_variant_regs = &i2sv7_regs,
1493 };
1494
1495 static const struct samsung_i2s_dai_data i2sv5_dai_type_i2s1 = {
1496         .dai_type = TYPE_PRI,
1497         .quirks = QUIRK_PRI_6CHAN | QUIRK_NEED_RSTCLR,
1498         .i2s_variant_regs = &i2sv5_i2s1_regs,
1499 };
1500
1501 static const struct samsung_i2s_dai_data samsung_dai_type_sec = {
1502         .dai_type = TYPE_SEC,
1503 };
1504
1505 static const struct platform_device_id samsung_i2s_driver_ids[] = {
1506         {
1507                 .name           = "samsung-i2s",
1508                 .driver_data    = (kernel_ulong_t)&i2sv3_dai_type,
1509         }, {
1510                 .name           = "samsung-i2s-sec",
1511                 .driver_data    = (kernel_ulong_t)&samsung_dai_type_sec,
1512         },
1513         {},
1514 };
1515 MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids);
1516
1517 #ifdef CONFIG_OF
1518 static const struct of_device_id exynos_i2s_match[] = {
1519         {
1520                 .compatible = "samsung,s3c6410-i2s",
1521                 .data = &i2sv3_dai_type,
1522         }, {
1523                 .compatible = "samsung,s5pv210-i2s",
1524                 .data = &i2sv5_dai_type,
1525         }, {
1526                 .compatible = "samsung,exynos5420-i2s",
1527                 .data = &i2sv6_dai_type,
1528         }, {
1529                 .compatible = "samsung,exynos7-i2s",
1530                 .data = &i2sv7_dai_type,
1531         }, {
1532                 .compatible = "samsung,exynos7-i2s1",
1533                 .data = &i2sv5_dai_type_i2s1,
1534         },
1535         {},
1536 };
1537 MODULE_DEVICE_TABLE(of, exynos_i2s_match);
1538 #endif
1539
1540 static const struct dev_pm_ops samsung_i2s_pm = {
1541         SET_RUNTIME_PM_OPS(i2s_runtime_suspend,
1542                                 i2s_runtime_resume, NULL)
1543 };
1544
1545 static struct platform_driver samsung_i2s_driver = {
1546         .probe  = samsung_i2s_probe,
1547         .remove = samsung_i2s_remove,
1548         .id_table = samsung_i2s_driver_ids,
1549         .driver = {
1550                 .name = "samsung-i2s",
1551                 .of_match_table = of_match_ptr(exynos_i2s_match),
1552                 .pm = &samsung_i2s_pm,
1553         },
1554 };
1555
1556 module_platform_driver(samsung_i2s_driver);
1557
1558 /* Module information */
1559 MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>");
1560 MODULE_DESCRIPTION("Samsung I2S Interface");
1561 MODULE_ALIAS("platform:samsung-i2s");
1562 MODULE_LICENSE("GPL");