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 /* Set default source clock in Master mode */ 646 if (i2s->rclk_srcrate == 0) 647 i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0, 648 0, SND_SOC_CLOCK_IN); 649 break; 650 default: 651 dev_err(&i2s->pdev->dev, "master/slave format not supported\n"); 652 return -EINVAL; 653 } 654 655 spin_lock_irqsave(i2s->lock, flags); 656 mod = readl(i2s->addr + I2SMOD); 657 /* 658 * Don't change the I2S mode if any controller is active on this 659 * channel. 660 */ 661 if (any_active(i2s) && 662 ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) { 663 spin_unlock_irqrestore(i2s->lock, flags); 664 dev_err(&i2s->pdev->dev, 665 "%s:%d Other DAI busy\n", __func__, __LINE__); 666 return -EAGAIN; 667 } 668 669 mod &= ~(sdf_mask | lrp_rlow | mod_slave); 670 mod |= tmp; 671 writel(mod, i2s->addr + I2SMOD); 672 spin_unlock_irqrestore(i2s->lock, flags); 673 674 return 0; 675 } 676 677 static int i2s_hw_params(struct snd_pcm_substream *substream, 678 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 679 { 680 struct i2s_dai *i2s = to_info(dai); 681 u32 mod, mask = 0, val = 0; 682 unsigned long flags; 683 684 if (!is_secondary(i2s)) 685 mask |= (MOD_DC2_EN | MOD_DC1_EN); 686 687 switch (params_channels(params)) { 688 case 6: 689 val |= MOD_DC2_EN; 690 case 4: 691 val |= MOD_DC1_EN; 692 break; 693 case 2: 694 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 695 i2s->dma_playback.addr_width = 4; 696 else 697 i2s->dma_capture.addr_width = 4; 698 break; 699 case 1: 700 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 701 i2s->dma_playback.addr_width = 2; 702 else 703 i2s->dma_capture.addr_width = 2; 704 705 break; 706 default: 707 dev_err(&i2s->pdev->dev, "%d channels not supported\n", 708 params_channels(params)); 709 return -EINVAL; 710 } 711 712 if (is_secondary(i2s)) 713 mask |= MOD_BLCS_MASK; 714 else 715 mask |= MOD_BLCP_MASK; 716 717 if (is_manager(i2s)) 718 mask |= MOD_BLC_MASK; 719 720 switch (params_width(params)) { 721 case 8: 722 if (is_secondary(i2s)) 723 val |= MOD_BLCS_8BIT; 724 else 725 val |= MOD_BLCP_8BIT; 726 if (is_manager(i2s)) 727 val |= MOD_BLC_8BIT; 728 break; 729 case 16: 730 if (is_secondary(i2s)) 731 val |= MOD_BLCS_16BIT; 732 else 733 val |= MOD_BLCP_16BIT; 734 if (is_manager(i2s)) 735 val |= MOD_BLC_16BIT; 736 break; 737 case 24: 738 if (is_secondary(i2s)) 739 val |= MOD_BLCS_24BIT; 740 else 741 val |= MOD_BLCP_24BIT; 742 if (is_manager(i2s)) 743 val |= MOD_BLC_24BIT; 744 break; 745 default: 746 dev_err(&i2s->pdev->dev, "Format(%d) not supported\n", 747 params_format(params)); 748 return -EINVAL; 749 } 750 751 spin_lock_irqsave(i2s->lock, flags); 752 mod = readl(i2s->addr + I2SMOD); 753 mod = (mod & ~mask) | val; 754 writel(mod, i2s->addr + I2SMOD); 755 spin_unlock_irqrestore(i2s->lock, flags); 756 757 snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture); 758 759 i2s->frmclk = params_rate(params); 760 761 return 0; 762 } 763 764 /* We set constraints on the substream acc to the version of I2S */ 765 static int i2s_startup(struct snd_pcm_substream *substream, 766 struct snd_soc_dai *dai) 767 { 768 struct i2s_dai *i2s = to_info(dai); 769 struct i2s_dai *other = get_other_dai(i2s); 770 unsigned long flags; 771 772 spin_lock_irqsave(&lock, flags); 773 774 i2s->mode |= DAI_OPENED; 775 776 if (is_manager(other)) 777 i2s->mode &= ~DAI_MANAGER; 778 else 779 i2s->mode |= DAI_MANAGER; 780 781 if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR)) 782 writel(CON_RSTCLR, i2s->addr + I2SCON); 783 784 spin_unlock_irqrestore(&lock, flags); 785 786 return 0; 787 } 788 789 static void i2s_shutdown(struct snd_pcm_substream *substream, 790 struct snd_soc_dai *dai) 791 { 792 struct i2s_dai *i2s = to_info(dai); 793 struct i2s_dai *other = get_other_dai(i2s); 794 unsigned long flags; 795 796 spin_lock_irqsave(&lock, flags); 797 798 i2s->mode &= ~DAI_OPENED; 799 i2s->mode &= ~DAI_MANAGER; 800 801 if (is_opened(other)) 802 other->mode |= DAI_MANAGER; 803 804 /* Reset any constraint on RFS and BFS */ 805 i2s->rfs = 0; 806 i2s->bfs = 0; 807 808 spin_unlock_irqrestore(&lock, flags); 809 } 810 811 static int config_setup(struct i2s_dai *i2s) 812 { 813 struct i2s_dai *other = get_other_dai(i2s); 814 unsigned rfs, bfs, blc; 815 u32 psr; 816 817 blc = get_blc(i2s); 818 819 bfs = i2s->bfs; 820 821 if (!bfs && other) 822 bfs = other->bfs; 823 824 /* Select least possible multiple(2) if no constraint set */ 825 if (!bfs) 826 bfs = blc * 2; 827 828 rfs = i2s->rfs; 829 830 if (!rfs && other) 831 rfs = other->rfs; 832 833 if ((rfs == 256 || rfs == 512) && (blc == 24)) { 834 dev_err(&i2s->pdev->dev, 835 "%d-RFS not supported for 24-blc\n", rfs); 836 return -EINVAL; 837 } 838 839 if (!rfs) { 840 if (bfs == 16 || bfs == 32) 841 rfs = 256; 842 else 843 rfs = 384; 844 } 845 846 /* If already setup and running */ 847 if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) { 848 dev_err(&i2s->pdev->dev, 849 "%s:%d Other DAI busy\n", __func__, __LINE__); 850 return -EAGAIN; 851 } 852 853 set_bfs(i2s, bfs); 854 set_rfs(i2s, rfs); 855 856 /* Don't bother with PSR in Slave mode */ 857 if (is_slave(i2s)) 858 return 0; 859 860 if (!(i2s->quirks & QUIRK_NO_MUXPSR)) { 861 psr = i2s->rclk_srcrate / i2s->frmclk / rfs; 862 writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR); 863 dev_dbg(&i2s->pdev->dev, 864 "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n", 865 i2s->rclk_srcrate, psr, rfs, bfs); 866 } 867 868 return 0; 869 } 870 871 static int i2s_trigger(struct snd_pcm_substream *substream, 872 int cmd, struct snd_soc_dai *dai) 873 { 874 int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 875 struct snd_soc_pcm_runtime *rtd = substream->private_data; 876 struct i2s_dai *i2s = to_info(rtd->cpu_dai); 877 unsigned long flags; 878 879 switch (cmd) { 880 case SNDRV_PCM_TRIGGER_START: 881 case SNDRV_PCM_TRIGGER_RESUME: 882 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 883 spin_lock_irqsave(i2s->lock, flags); 884 885 if (config_setup(i2s)) { 886 spin_unlock_irqrestore(i2s->lock, flags); 887 return -EINVAL; 888 } 889 890 if (capture) 891 i2s_rxctrl(i2s, 1); 892 else 893 i2s_txctrl(i2s, 1); 894 895 spin_unlock_irqrestore(i2s->lock, flags); 896 break; 897 case SNDRV_PCM_TRIGGER_STOP: 898 case SNDRV_PCM_TRIGGER_SUSPEND: 899 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 900 spin_lock_irqsave(i2s->lock, flags); 901 902 if (capture) { 903 i2s_rxctrl(i2s, 0); 904 i2s_fifo(i2s, FIC_RXFLUSH); 905 } else { 906 i2s_txctrl(i2s, 0); 907 i2s_fifo(i2s, FIC_TXFLUSH); 908 } 909 910 spin_unlock_irqrestore(i2s->lock, flags); 911 break; 912 } 913 914 return 0; 915 } 916 917 static int i2s_set_clkdiv(struct snd_soc_dai *dai, 918 int div_id, int div) 919 { 920 struct i2s_dai *i2s = to_info(dai); 921 struct i2s_dai *other = get_other_dai(i2s); 922 923 switch (div_id) { 924 case SAMSUNG_I2S_DIV_BCLK: 925 if ((any_active(i2s) && div && (get_bfs(i2s) != div)) 926 || (other && other->bfs && (other->bfs != div))) { 927 dev_err(&i2s->pdev->dev, 928 "%s:%d Other DAI busy\n", __func__, __LINE__); 929 return -EAGAIN; 930 } 931 i2s->bfs = div; 932 break; 933 default: 934 dev_err(&i2s->pdev->dev, 935 "Invalid clock divider(%d)\n", div_id); 936 return -EINVAL; 937 } 938 939 return 0; 940 } 941 942 static snd_pcm_sframes_t 943 i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) 944 { 945 struct i2s_dai *i2s = to_info(dai); 946 u32 reg = readl(i2s->addr + I2SFIC); 947 snd_pcm_sframes_t delay; 948 const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs; 949 950 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) 951 delay = FIC_RXCOUNT(reg); 952 else if (is_secondary(i2s)) 953 delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS)); 954 else 955 delay = (reg >> i2s_regs->ftx0cnt_off) & 0x7f; 956 957 return delay; 958 } 959 960 #ifdef CONFIG_PM 961 static int i2s_suspend(struct snd_soc_dai *dai) 962 { 963 struct i2s_dai *i2s = to_info(dai); 964 965 i2s->suspend_i2smod = readl(i2s->addr + I2SMOD); 966 i2s->suspend_i2scon = readl(i2s->addr + I2SCON); 967 i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR); 968 969 return 0; 970 } 971 972 static int i2s_resume(struct snd_soc_dai *dai) 973 { 974 struct i2s_dai *i2s = to_info(dai); 975 976 writel(i2s->suspend_i2scon, i2s->addr + I2SCON); 977 writel(i2s->suspend_i2smod, i2s->addr + I2SMOD); 978 writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR); 979 980 return 0; 981 } 982 #else 983 #define i2s_suspend NULL 984 #define i2s_resume NULL 985 #endif 986 987 static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) 988 { 989 struct i2s_dai *i2s = to_info(dai); 990 struct i2s_dai *other = get_other_dai(i2s); 991 unsigned long flags; 992 993 if (is_secondary(i2s)) { /* If this is probe on the secondary DAI */ 994 snd_soc_dai_init_dma_data(dai, &other->sec_dai->dma_playback, 995 NULL); 996 } else { 997 snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, 998 &i2s->dma_capture); 999 1000 if (i2s->quirks & QUIRK_NEED_RSTCLR) 1001 writel(CON_RSTCLR, i2s->addr + I2SCON); 1002 1003 if (i2s->quirks & QUIRK_SUPPORTS_IDMA) 1004 idma_reg_addr_init(i2s->addr, 1005 i2s->sec_dai->idma_playback.addr); 1006 } 1007 1008 /* Reset any constraint on RFS and BFS */ 1009 i2s->rfs = 0; 1010 i2s->bfs = 0; 1011 i2s->rclk_srcrate = 0; 1012 1013 spin_lock_irqsave(i2s->lock, flags); 1014 i2s_txctrl(i2s, 0); 1015 i2s_rxctrl(i2s, 0); 1016 i2s_fifo(i2s, FIC_TXFLUSH); 1017 i2s_fifo(other, FIC_TXFLUSH); 1018 i2s_fifo(i2s, FIC_RXFLUSH); 1019 spin_unlock_irqrestore(i2s->lock, flags); 1020 1021 /* Gate CDCLK by default */ 1022 if (!is_opened(other)) 1023 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, 1024 0, SND_SOC_CLOCK_IN); 1025 1026 return 0; 1027 } 1028 1029 static int samsung_i2s_dai_remove(struct snd_soc_dai *dai) 1030 { 1031 struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai); 1032 1033 if (!is_secondary(i2s)) { 1034 if (i2s->quirks & QUIRK_NEED_RSTCLR) { 1035 spin_lock(i2s->lock); 1036 writel(0, i2s->addr + I2SCON); 1037 spin_unlock(i2s->lock); 1038 } 1039 } 1040 1041 return 0; 1042 } 1043 1044 static const struct snd_soc_dai_ops samsung_i2s_dai_ops = { 1045 .trigger = i2s_trigger, 1046 .hw_params = i2s_hw_params, 1047 .set_fmt = i2s_set_fmt, 1048 .set_clkdiv = i2s_set_clkdiv, 1049 .set_sysclk = i2s_set_sysclk, 1050 .startup = i2s_startup, 1051 .shutdown = i2s_shutdown, 1052 .delay = i2s_delay, 1053 }; 1054 1055 static const struct snd_soc_component_driver samsung_i2s_component = { 1056 .name = "samsung-i2s", 1057 }; 1058 1059 #define SAMSUNG_I2S_RATES SNDRV_PCM_RATE_8000_96000 1060 1061 #define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \ 1062 SNDRV_PCM_FMTBIT_S16_LE | \ 1063 SNDRV_PCM_FMTBIT_S24_LE) 1064 1065 static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec) 1066 { 1067 struct i2s_dai *i2s; 1068 int ret; 1069 1070 i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL); 1071 if (i2s == NULL) 1072 return NULL; 1073 1074 i2s->pdev = pdev; 1075 i2s->pri_dai = NULL; 1076 i2s->sec_dai = NULL; 1077 i2s->i2s_dai_drv.symmetric_rates = 1; 1078 i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe; 1079 i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove; 1080 i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops; 1081 i2s->i2s_dai_drv.suspend = i2s_suspend; 1082 i2s->i2s_dai_drv.resume = i2s_resume; 1083 i2s->i2s_dai_drv.playback.channels_min = 1; 1084 i2s->i2s_dai_drv.playback.channels_max = 2; 1085 i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES; 1086 i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS; 1087 1088 if (!sec) { 1089 i2s->i2s_dai_drv.capture.channels_min = 1; 1090 i2s->i2s_dai_drv.capture.channels_max = 2; 1091 i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES; 1092 i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS; 1093 dev_set_drvdata(&i2s->pdev->dev, i2s); 1094 } else { /* Create a new platform_device for Secondary */ 1095 i2s->pdev = platform_device_alloc("samsung-i2s-sec", -1); 1096 if (!i2s->pdev) 1097 return NULL; 1098 1099 i2s->pdev->dev.parent = &pdev->dev; 1100 1101 platform_set_drvdata(i2s->pdev, i2s); 1102 ret = platform_device_add(i2s->pdev); 1103 if (ret < 0) 1104 return NULL; 1105 } 1106 1107 return i2s; 1108 } 1109 1110 static void i2s_free_sec_dai(struct i2s_dai *i2s) 1111 { 1112 platform_device_del(i2s->pdev); 1113 } 1114 1115 #ifdef CONFIG_PM 1116 static int i2s_runtime_suspend(struct device *dev) 1117 { 1118 struct i2s_dai *i2s = dev_get_drvdata(dev); 1119 1120 clk_disable_unprepare(i2s->clk); 1121 1122 return 0; 1123 } 1124 1125 static int i2s_runtime_resume(struct device *dev) 1126 { 1127 struct i2s_dai *i2s = dev_get_drvdata(dev); 1128 1129 clk_prepare_enable(i2s->clk); 1130 1131 return 0; 1132 } 1133 #endif /* CONFIG_PM */ 1134 1135 static void i2s_unregister_clocks(struct i2s_dai *i2s) 1136 { 1137 int i; 1138 1139 for (i = 0; i < i2s->clk_data.clk_num; i++) { 1140 if (!IS_ERR(i2s->clk_table[i])) 1141 clk_unregister(i2s->clk_table[i]); 1142 } 1143 } 1144 1145 static void i2s_unregister_clock_provider(struct platform_device *pdev) 1146 { 1147 struct i2s_dai *i2s = dev_get_drvdata(&pdev->dev); 1148 1149 of_clk_del_provider(pdev->dev.of_node); 1150 i2s_unregister_clocks(i2s); 1151 } 1152 1153 static int i2s_register_clock_provider(struct platform_device *pdev) 1154 { 1155 struct device *dev = &pdev->dev; 1156 struct i2s_dai *i2s = dev_get_drvdata(dev); 1157 const char *clk_name[2] = { "i2s_opclk0", "i2s_opclk1" }; 1158 const char *p_names[2] = { NULL }; 1159 const struct samsung_i2s_variant_regs *reg_info = i2s->variant_regs; 1160 struct clk *rclksrc; 1161 int ret, i; 1162 1163 /* Register the clock provider only if it's expected in the DTB */ 1164 if (!of_find_property(dev->of_node, "#clock-cells", NULL)) 1165 return 0; 1166 1167 /* Get the RCLKSRC mux clock parent clock names */ 1168 for (i = 0; i < ARRAY_SIZE(p_names); i++) { 1169 rclksrc = clk_get(dev, clk_name[i]); 1170 if (IS_ERR(rclksrc)) 1171 continue; 1172 p_names[i] = __clk_get_name(rclksrc); 1173 clk_put(rclksrc); 1174 } 1175 1176 if (!(i2s->quirks & QUIRK_NO_MUXPSR)) { 1177 /* Activate the prescaler */ 1178 u32 val = readl(i2s->addr + I2SPSR); 1179 writel(val | PSR_PSREN, i2s->addr + I2SPSR); 1180 1181 i2s->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(NULL, 1182 "i2s_rclksrc", p_names, ARRAY_SIZE(p_names), 1183 CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT, 1184 i2s->addr + I2SMOD, reg_info->rclksrc_off, 1185 1, 0, i2s->lock); 1186 1187 i2s->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(NULL, 1188 "i2s_presc", "i2s_rclksrc", 1189 CLK_SET_RATE_PARENT, 1190 i2s->addr + I2SPSR, 8, 6, 0, i2s->lock); 1191 1192 p_names[0] = "i2s_presc"; 1193 i2s->clk_data.clk_num = 2; 1194 } 1195 of_property_read_string_index(dev->of_node, 1196 "clock-output-names", 0, &clk_name[0]); 1197 1198 i2s->clk_table[CLK_I2S_CDCLK] = clk_register_gate(NULL, clk_name[0], 1199 p_names[0], CLK_SET_RATE_PARENT, 1200 i2s->addr + I2SMOD, reg_info->cdclkcon_off, 1201 CLK_GATE_SET_TO_DISABLE, i2s->lock); 1202 1203 i2s->clk_data.clk_num += 1; 1204 i2s->clk_data.clks = i2s->clk_table; 1205 1206 ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get, 1207 &i2s->clk_data); 1208 if (ret < 0) { 1209 dev_err(dev, "failed to add clock provider: %d\n", ret); 1210 i2s_unregister_clocks(i2s); 1211 } 1212 1213 return ret; 1214 } 1215 1216 static int samsung_i2s_probe(struct platform_device *pdev) 1217 { 1218 struct i2s_dai *pri_dai, *sec_dai = NULL; 1219 struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data; 1220 struct samsung_i2s *i2s_cfg = NULL; 1221 struct resource *res; 1222 u32 regs_base, quirks = 0, idma_addr = 0; 1223 struct device_node *np = pdev->dev.of_node; 1224 const struct samsung_i2s_dai_data *i2s_dai_data; 1225 int ret; 1226 1227 if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) 1228 i2s_dai_data = of_device_get_match_data(&pdev->dev); 1229 else 1230 i2s_dai_data = (struct samsung_i2s_dai_data *) 1231 platform_get_device_id(pdev)->driver_data; 1232 1233 /* Call during the secondary interface registration */ 1234 if (i2s_dai_data->dai_type == TYPE_SEC) { 1235 sec_dai = dev_get_drvdata(&pdev->dev); 1236 if (!sec_dai) { 1237 dev_err(&pdev->dev, "Unable to get drvdata\n"); 1238 return -EFAULT; 1239 } 1240 ret = devm_snd_soc_register_component(&sec_dai->pdev->dev, 1241 &samsung_i2s_component, 1242 &sec_dai->i2s_dai_drv, 1); 1243 if (ret != 0) 1244 return ret; 1245 1246 return samsung_asoc_dma_platform_register(&pdev->dev, 1247 sec_dai->filter, "tx-sec", NULL); 1248 } 1249 1250 pri_dai = i2s_alloc_dai(pdev, false); 1251 if (!pri_dai) { 1252 dev_err(&pdev->dev, "Unable to alloc I2S_pri\n"); 1253 return -ENOMEM; 1254 } 1255 1256 spin_lock_init(&pri_dai->spinlock); 1257 pri_dai->lock = &pri_dai->spinlock; 1258 1259 if (!np) { 1260 if (i2s_pdata == NULL) { 1261 dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n"); 1262 return -EINVAL; 1263 } 1264 1265 pri_dai->dma_playback.filter_data = i2s_pdata->dma_playback; 1266 pri_dai->dma_capture.filter_data = i2s_pdata->dma_capture; 1267 pri_dai->filter = i2s_pdata->dma_filter; 1268 1269 if (&i2s_pdata->type) 1270 i2s_cfg = &i2s_pdata->type.i2s; 1271 1272 if (i2s_cfg) { 1273 quirks = i2s_cfg->quirks; 1274 idma_addr = i2s_cfg->idma_addr; 1275 } 1276 } else { 1277 quirks = i2s_dai_data->quirks; 1278 if (of_property_read_u32(np, "samsung,idma-addr", 1279 &idma_addr)) { 1280 if (quirks & QUIRK_SUPPORTS_IDMA) { 1281 dev_info(&pdev->dev, "idma address is not"\ 1282 "specified"); 1283 } 1284 } 1285 } 1286 1287 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1288 pri_dai->addr = devm_ioremap_resource(&pdev->dev, res); 1289 if (IS_ERR(pri_dai->addr)) 1290 return PTR_ERR(pri_dai->addr); 1291 1292 regs_base = res->start; 1293 1294 pri_dai->clk = devm_clk_get(&pdev->dev, "iis"); 1295 if (IS_ERR(pri_dai->clk)) { 1296 dev_err(&pdev->dev, "Failed to get iis clock\n"); 1297 return PTR_ERR(pri_dai->clk); 1298 } 1299 1300 ret = clk_prepare_enable(pri_dai->clk); 1301 if (ret != 0) { 1302 dev_err(&pdev->dev, "failed to enable clock: %d\n", ret); 1303 return ret; 1304 } 1305 pri_dai->dma_playback.addr = regs_base + I2STXD; 1306 pri_dai->dma_capture.addr = regs_base + I2SRXD; 1307 pri_dai->dma_playback.chan_name = "tx"; 1308 pri_dai->dma_capture.chan_name = "rx"; 1309 pri_dai->dma_playback.addr_width = 4; 1310 pri_dai->dma_capture.addr_width = 4; 1311 pri_dai->quirks = quirks; 1312 pri_dai->variant_regs = i2s_dai_data->i2s_variant_regs; 1313 1314 if (quirks & QUIRK_PRI_6CHAN) 1315 pri_dai->i2s_dai_drv.playback.channels_max = 6; 1316 1317 if (quirks & QUIRK_SEC_DAI) { 1318 sec_dai = i2s_alloc_dai(pdev, true); 1319 if (!sec_dai) { 1320 dev_err(&pdev->dev, "Unable to alloc I2S_sec\n"); 1321 ret = -ENOMEM; 1322 goto err_disable_clk; 1323 } 1324 1325 sec_dai->lock = &pri_dai->spinlock; 1326 sec_dai->variant_regs = pri_dai->variant_regs; 1327 sec_dai->dma_playback.addr = regs_base + I2STXDS; 1328 sec_dai->dma_playback.chan_name = "tx-sec"; 1329 1330 if (!np) { 1331 sec_dai->dma_playback.filter_data = i2s_pdata->dma_play_sec; 1332 sec_dai->filter = i2s_pdata->dma_filter; 1333 } 1334 1335 sec_dai->dma_playback.addr_width = 4; 1336 sec_dai->addr = pri_dai->addr; 1337 sec_dai->clk = pri_dai->clk; 1338 sec_dai->quirks = quirks; 1339 sec_dai->idma_playback.addr = idma_addr; 1340 sec_dai->pri_dai = pri_dai; 1341 pri_dai->sec_dai = sec_dai; 1342 } 1343 1344 if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) { 1345 dev_err(&pdev->dev, "Unable to configure gpio\n"); 1346 ret = -EINVAL; 1347 goto err_disable_clk; 1348 } 1349 1350 ret = devm_snd_soc_register_component(&pri_dai->pdev->dev, 1351 &samsung_i2s_component, 1352 &pri_dai->i2s_dai_drv, 1); 1353 if (ret < 0) 1354 goto err_free_dai; 1355 1356 ret = samsung_asoc_dma_platform_register(&pdev->dev, pri_dai->filter, 1357 NULL, NULL); 1358 if (ret < 0) 1359 goto err_free_dai; 1360 1361 pm_runtime_enable(&pdev->dev); 1362 1363 ret = i2s_register_clock_provider(pdev); 1364 if (!ret) 1365 return 0; 1366 1367 pm_runtime_disable(&pdev->dev); 1368 err_free_dai: 1369 if (sec_dai) 1370 i2s_free_sec_dai(sec_dai); 1371 err_disable_clk: 1372 clk_disable_unprepare(pri_dai->clk); 1373 return ret; 1374 } 1375 1376 static int samsung_i2s_remove(struct platform_device *pdev) 1377 { 1378 struct i2s_dai *i2s, *other; 1379 1380 i2s = dev_get_drvdata(&pdev->dev); 1381 other = get_other_dai(i2s); 1382 1383 if (other) { 1384 other->pri_dai = NULL; 1385 other->sec_dai = NULL; 1386 } else { 1387 pm_runtime_disable(&pdev->dev); 1388 } 1389 1390 if (!is_secondary(i2s)) { 1391 i2s_unregister_clock_provider(pdev); 1392 clk_disable_unprepare(i2s->clk); 1393 } 1394 1395 i2s->pri_dai = NULL; 1396 i2s->sec_dai = NULL; 1397 1398 return 0; 1399 } 1400 1401 static const struct samsung_i2s_variant_regs i2sv3_regs = { 1402 .bfs_off = 1, 1403 .rfs_off = 3, 1404 .sdf_off = 5, 1405 .txr_off = 8, 1406 .rclksrc_off = 10, 1407 .mss_off = 11, 1408 .cdclkcon_off = 12, 1409 .lrp_off = 7, 1410 .bfs_mask = 0x3, 1411 .rfs_mask = 0x3, 1412 .ftx0cnt_off = 8, 1413 }; 1414 1415 static const struct samsung_i2s_variant_regs i2sv6_regs = { 1416 .bfs_off = 0, 1417 .rfs_off = 4, 1418 .sdf_off = 6, 1419 .txr_off = 8, 1420 .rclksrc_off = 10, 1421 .mss_off = 11, 1422 .cdclkcon_off = 12, 1423 .lrp_off = 15, 1424 .bfs_mask = 0xf, 1425 .rfs_mask = 0x3, 1426 .ftx0cnt_off = 8, 1427 }; 1428 1429 static const struct samsung_i2s_variant_regs i2sv7_regs = { 1430 .bfs_off = 0, 1431 .rfs_off = 4, 1432 .sdf_off = 7, 1433 .txr_off = 9, 1434 .rclksrc_off = 11, 1435 .mss_off = 12, 1436 .cdclkcon_off = 22, 1437 .lrp_off = 15, 1438 .bfs_mask = 0xf, 1439 .rfs_mask = 0x7, 1440 .ftx0cnt_off = 0, 1441 }; 1442 1443 static const struct samsung_i2s_variant_regs i2sv5_i2s1_regs = { 1444 .bfs_off = 0, 1445 .rfs_off = 3, 1446 .sdf_off = 6, 1447 .txr_off = 8, 1448 .rclksrc_off = 10, 1449 .mss_off = 11, 1450 .cdclkcon_off = 12, 1451 .lrp_off = 15, 1452 .bfs_mask = 0x7, 1453 .rfs_mask = 0x7, 1454 .ftx0cnt_off = 8, 1455 }; 1456 1457 static const struct samsung_i2s_dai_data i2sv3_dai_type = { 1458 .dai_type = TYPE_PRI, 1459 .quirks = QUIRK_NO_MUXPSR, 1460 .i2s_variant_regs = &i2sv3_regs, 1461 }; 1462 1463 static const struct samsung_i2s_dai_data i2sv5_dai_type = { 1464 .dai_type = TYPE_PRI, 1465 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | 1466 QUIRK_SUPPORTS_IDMA, 1467 .i2s_variant_regs = &i2sv3_regs, 1468 }; 1469 1470 static const struct samsung_i2s_dai_data i2sv6_dai_type = { 1471 .dai_type = TYPE_PRI, 1472 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | 1473 QUIRK_SUPPORTS_TDM | QUIRK_SUPPORTS_IDMA, 1474 .i2s_variant_regs = &i2sv6_regs, 1475 }; 1476 1477 static const struct samsung_i2s_dai_data i2sv7_dai_type = { 1478 .dai_type = TYPE_PRI, 1479 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | 1480 QUIRK_SUPPORTS_TDM, 1481 .i2s_variant_regs = &i2sv7_regs, 1482 }; 1483 1484 static const struct samsung_i2s_dai_data i2sv5_dai_type_i2s1 = { 1485 .dai_type = TYPE_PRI, 1486 .quirks = QUIRK_PRI_6CHAN | QUIRK_NEED_RSTCLR, 1487 .i2s_variant_regs = &i2sv5_i2s1_regs, 1488 }; 1489 1490 static const struct samsung_i2s_dai_data samsung_dai_type_sec = { 1491 .dai_type = TYPE_SEC, 1492 }; 1493 1494 static const struct platform_device_id samsung_i2s_driver_ids[] = { 1495 { 1496 .name = "samsung-i2s", 1497 .driver_data = (kernel_ulong_t)&i2sv3_dai_type, 1498 }, { 1499 .name = "samsung-i2s-sec", 1500 .driver_data = (kernel_ulong_t)&samsung_dai_type_sec, 1501 }, 1502 {}, 1503 }; 1504 MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids); 1505 1506 #ifdef CONFIG_OF 1507 static const struct of_device_id exynos_i2s_match[] = { 1508 { 1509 .compatible = "samsung,s3c6410-i2s", 1510 .data = &i2sv3_dai_type, 1511 }, { 1512 .compatible = "samsung,s5pv210-i2s", 1513 .data = &i2sv5_dai_type, 1514 }, { 1515 .compatible = "samsung,exynos5420-i2s", 1516 .data = &i2sv6_dai_type, 1517 }, { 1518 .compatible = "samsung,exynos7-i2s", 1519 .data = &i2sv7_dai_type, 1520 }, { 1521 .compatible = "samsung,exynos7-i2s1", 1522 .data = &i2sv5_dai_type_i2s1, 1523 }, 1524 {}, 1525 }; 1526 MODULE_DEVICE_TABLE(of, exynos_i2s_match); 1527 #endif 1528 1529 static const struct dev_pm_ops samsung_i2s_pm = { 1530 SET_RUNTIME_PM_OPS(i2s_runtime_suspend, 1531 i2s_runtime_resume, NULL) 1532 }; 1533 1534 static struct platform_driver samsung_i2s_driver = { 1535 .probe = samsung_i2s_probe, 1536 .remove = samsung_i2s_remove, 1537 .id_table = samsung_i2s_driver_ids, 1538 .driver = { 1539 .name = "samsung-i2s", 1540 .of_match_table = of_match_ptr(exynos_i2s_match), 1541 .pm = &samsung_i2s_pm, 1542 }, 1543 }; 1544 1545 module_platform_driver(samsung_i2s_driver); 1546 1547 /* Module information */ 1548 MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>"); 1549 MODULE_DESCRIPTION("Samsung I2S Interface"); 1550 MODULE_ALIAS("platform:samsung-i2s"); 1551 MODULE_LICENSE("GPL"); 1552