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_gpio.h> 22 #include <linux/pm_runtime.h> 23 24 #include <sound/soc.h> 25 #include <sound/pcm_params.h> 26 27 #include <linux/platform_data/asoc-s3c.h> 28 29 #include "dma.h" 30 #include "idma.h" 31 #include "i2s.h" 32 #include "i2s-regs.h" 33 34 #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t) 35 36 enum samsung_dai_type { 37 TYPE_PRI, 38 TYPE_SEC, 39 }; 40 41 struct samsung_i2s_variant_regs { 42 unsigned int bfs_off; 43 unsigned int rfs_off; 44 unsigned int sdf_off; 45 unsigned int txr_off; 46 unsigned int rclksrc_off; 47 unsigned int mss_off; 48 unsigned int cdclkcon_off; 49 unsigned int lrp_off; 50 unsigned int bfs_mask; 51 unsigned int rfs_mask; 52 unsigned int ftx0cnt_off; 53 }; 54 55 struct samsung_i2s_dai_data { 56 int dai_type; 57 u32 quirks; 58 const struct samsung_i2s_variant_regs *i2s_variant_regs; 59 }; 60 61 struct i2s_dai { 62 /* Platform device for this DAI */ 63 struct platform_device *pdev; 64 /* Memory mapped SFR region */ 65 void __iomem *addr; 66 /* Rate of RCLK source clock */ 67 unsigned long rclk_srcrate; 68 /* Frame Clock */ 69 unsigned frmclk; 70 /* 71 * Specifically requested RCLK,BCLK by MACHINE Driver. 72 * 0 indicates CPU driver is free to choose any value. 73 */ 74 unsigned rfs, bfs; 75 /* I2S Controller's core clock */ 76 struct clk *clk; 77 /* Clock for generating I2S signals */ 78 struct clk *op_clk; 79 /* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */ 80 struct i2s_dai *pri_dai; 81 /* Pointer to the Secondary_Fifo if it has one, NULL otherwise */ 82 struct i2s_dai *sec_dai; 83 #define DAI_OPENED (1 << 0) /* Dai is opened */ 84 #define DAI_MANAGER (1 << 1) /* Dai is the manager */ 85 unsigned mode; 86 /* Driver for this DAI */ 87 struct snd_soc_dai_driver i2s_dai_drv; 88 /* DMA parameters */ 89 struct s3c_dma_params dma_playback; 90 struct s3c_dma_params dma_capture; 91 struct s3c_dma_params idma_playback; 92 u32 quirks; 93 u32 suspend_i2smod; 94 u32 suspend_i2scon; 95 u32 suspend_i2spsr; 96 const struct samsung_i2s_variant_regs *variant_regs; 97 98 /* Spinlock protecting access to the device's registers */ 99 spinlock_t spinlock; 100 spinlock_t *lock; 101 102 /* Below fields are only valid if this is the primary FIFO */ 103 struct clk *clk_table[3]; 104 struct clk_onecell_data clk_data; 105 }; 106 107 /* Lock for cross i/f checks */ 108 static DEFINE_SPINLOCK(lock); 109 110 /* If this is the 'overlay' stereo DAI */ 111 static inline bool is_secondary(struct i2s_dai *i2s) 112 { 113 return i2s->pri_dai ? true : false; 114 } 115 116 /* If operating in SoC-Slave mode */ 117 static inline bool is_slave(struct i2s_dai *i2s) 118 { 119 u32 mod = readl(i2s->addr + I2SMOD); 120 return (mod & (1 << i2s->variant_regs->mss_off)) ? true : false; 121 } 122 123 /* If this interface of the controller is transmitting data */ 124 static inline bool tx_active(struct i2s_dai *i2s) 125 { 126 u32 active; 127 128 if (!i2s) 129 return false; 130 131 active = readl(i2s->addr + I2SCON); 132 133 if (is_secondary(i2s)) 134 active &= CON_TXSDMA_ACTIVE; 135 else 136 active &= CON_TXDMA_ACTIVE; 137 138 return active ? true : false; 139 } 140 141 /* Return pointer to the other DAI */ 142 static inline struct i2s_dai *get_other_dai(struct i2s_dai *i2s) 143 { 144 return i2s->pri_dai ? : i2s->sec_dai; 145 } 146 147 /* If the other interface of the controller is transmitting data */ 148 static inline bool other_tx_active(struct i2s_dai *i2s) 149 { 150 struct i2s_dai *other = get_other_dai(i2s); 151 152 return tx_active(other); 153 } 154 155 /* If any interface of the controller is transmitting data */ 156 static inline bool any_tx_active(struct i2s_dai *i2s) 157 { 158 return tx_active(i2s) || other_tx_active(i2s); 159 } 160 161 /* If this interface of the controller is receiving data */ 162 static inline bool rx_active(struct i2s_dai *i2s) 163 { 164 u32 active; 165 166 if (!i2s) 167 return false; 168 169 active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE; 170 171 return active ? true : false; 172 } 173 174 /* If the other interface of the controller is receiving data */ 175 static inline bool other_rx_active(struct i2s_dai *i2s) 176 { 177 struct i2s_dai *other = get_other_dai(i2s); 178 179 return rx_active(other); 180 } 181 182 /* If any interface of the controller is receiving data */ 183 static inline bool any_rx_active(struct i2s_dai *i2s) 184 { 185 return rx_active(i2s) || other_rx_active(i2s); 186 } 187 188 /* If the other DAI is transmitting or receiving data */ 189 static inline bool other_active(struct i2s_dai *i2s) 190 { 191 return other_rx_active(i2s) || other_tx_active(i2s); 192 } 193 194 /* If this DAI is transmitting or receiving data */ 195 static inline bool this_active(struct i2s_dai *i2s) 196 { 197 return tx_active(i2s) || rx_active(i2s); 198 } 199 200 /* If the controller is active anyway */ 201 static inline bool any_active(struct i2s_dai *i2s) 202 { 203 return this_active(i2s) || other_active(i2s); 204 } 205 206 static inline struct i2s_dai *to_info(struct snd_soc_dai *dai) 207 { 208 return snd_soc_dai_get_drvdata(dai); 209 } 210 211 static inline bool is_opened(struct i2s_dai *i2s) 212 { 213 if (i2s && (i2s->mode & DAI_OPENED)) 214 return true; 215 else 216 return false; 217 } 218 219 static inline bool is_manager(struct i2s_dai *i2s) 220 { 221 if (is_opened(i2s) && (i2s->mode & DAI_MANAGER)) 222 return true; 223 else 224 return false; 225 } 226 227 /* Read RCLK of I2S (in multiples of LRCLK) */ 228 static inline unsigned get_rfs(struct i2s_dai *i2s) 229 { 230 u32 rfs; 231 rfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->rfs_off; 232 rfs &= i2s->variant_regs->rfs_mask; 233 234 switch (rfs) { 235 case 7: return 192; 236 case 6: return 96; 237 case 5: return 128; 238 case 4: return 64; 239 case 3: return 768; 240 case 2: return 384; 241 case 1: return 512; 242 default: return 256; 243 } 244 } 245 246 /* Write RCLK of I2S (in multiples of LRCLK) */ 247 static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs) 248 { 249 u32 mod = readl(i2s->addr + I2SMOD); 250 int rfs_shift = i2s->variant_regs->rfs_off; 251 252 mod &= ~(i2s->variant_regs->rfs_mask << rfs_shift); 253 254 switch (rfs) { 255 case 192: 256 mod |= (EXYNOS7_MOD_RCLK_192FS << rfs_shift); 257 break; 258 case 96: 259 mod |= (EXYNOS7_MOD_RCLK_96FS << rfs_shift); 260 break; 261 case 128: 262 mod |= (EXYNOS7_MOD_RCLK_128FS << rfs_shift); 263 break; 264 case 64: 265 mod |= (EXYNOS7_MOD_RCLK_64FS << rfs_shift); 266 break; 267 case 768: 268 mod |= (MOD_RCLK_768FS << rfs_shift); 269 break; 270 case 512: 271 mod |= (MOD_RCLK_512FS << rfs_shift); 272 break; 273 case 384: 274 mod |= (MOD_RCLK_384FS << rfs_shift); 275 break; 276 default: 277 mod |= (MOD_RCLK_256FS << rfs_shift); 278 break; 279 } 280 281 writel(mod, i2s->addr + I2SMOD); 282 } 283 284 /* Read Bit-Clock of I2S (in multiples of LRCLK) */ 285 static inline unsigned get_bfs(struct i2s_dai *i2s) 286 { 287 u32 bfs; 288 bfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->bfs_off; 289 bfs &= i2s->variant_regs->bfs_mask; 290 291 switch (bfs) { 292 case 8: return 256; 293 case 7: return 192; 294 case 6: return 128; 295 case 5: return 96; 296 case 4: return 64; 297 case 3: return 24; 298 case 2: return 16; 299 case 1: return 48; 300 default: return 32; 301 } 302 } 303 304 /* Write Bit-Clock of I2S (in multiples of LRCLK) */ 305 static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs) 306 { 307 u32 mod = readl(i2s->addr + I2SMOD); 308 int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM; 309 int bfs_shift = i2s->variant_regs->bfs_off; 310 311 /* Non-TDM I2S controllers do not support BCLK > 48 * FS */ 312 if (!tdm && bfs > 48) { 313 dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n"); 314 return; 315 } 316 317 mod &= ~(i2s->variant_regs->bfs_mask << bfs_shift); 318 319 switch (bfs) { 320 case 48: 321 mod |= (MOD_BCLK_48FS << bfs_shift); 322 break; 323 case 32: 324 mod |= (MOD_BCLK_32FS << bfs_shift); 325 break; 326 case 24: 327 mod |= (MOD_BCLK_24FS << bfs_shift); 328 break; 329 case 16: 330 mod |= (MOD_BCLK_16FS << bfs_shift); 331 break; 332 case 64: 333 mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift); 334 break; 335 case 96: 336 mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift); 337 break; 338 case 128: 339 mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift); 340 break; 341 case 192: 342 mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift); 343 break; 344 case 256: 345 mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift); 346 break; 347 default: 348 dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n"); 349 return; 350 } 351 352 writel(mod, i2s->addr + I2SMOD); 353 } 354 355 /* Sample-Size */ 356 static inline int get_blc(struct i2s_dai *i2s) 357 { 358 int blc = readl(i2s->addr + I2SMOD); 359 360 blc = (blc >> 13) & 0x3; 361 362 switch (blc) { 363 case 2: return 24; 364 case 1: return 8; 365 default: return 16; 366 } 367 } 368 369 /* TX Channel Control */ 370 static void i2s_txctrl(struct i2s_dai *i2s, int on) 371 { 372 void __iomem *addr = i2s->addr; 373 int txr_off = i2s->variant_regs->txr_off; 374 u32 con = readl(addr + I2SCON); 375 u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off); 376 377 if (on) { 378 con |= CON_ACTIVE; 379 con &= ~CON_TXCH_PAUSE; 380 381 if (is_secondary(i2s)) { 382 con |= CON_TXSDMA_ACTIVE; 383 con &= ~CON_TXSDMA_PAUSE; 384 } else { 385 con |= CON_TXDMA_ACTIVE; 386 con &= ~CON_TXDMA_PAUSE; 387 } 388 389 if (any_rx_active(i2s)) 390 mod |= 2 << txr_off; 391 else 392 mod |= 0 << txr_off; 393 } else { 394 if (is_secondary(i2s)) { 395 con |= CON_TXSDMA_PAUSE; 396 con &= ~CON_TXSDMA_ACTIVE; 397 } else { 398 con |= CON_TXDMA_PAUSE; 399 con &= ~CON_TXDMA_ACTIVE; 400 } 401 402 if (other_tx_active(i2s)) { 403 writel(con, addr + I2SCON); 404 return; 405 } 406 407 con |= CON_TXCH_PAUSE; 408 409 if (any_rx_active(i2s)) 410 mod |= 1 << txr_off; 411 else 412 con &= ~CON_ACTIVE; 413 } 414 415 writel(mod, addr + I2SMOD); 416 writel(con, addr + I2SCON); 417 } 418 419 /* RX Channel Control */ 420 static void i2s_rxctrl(struct i2s_dai *i2s, int on) 421 { 422 void __iomem *addr = i2s->addr; 423 int txr_off = i2s->variant_regs->txr_off; 424 u32 con = readl(addr + I2SCON); 425 u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off); 426 427 if (on) { 428 con |= CON_RXDMA_ACTIVE | CON_ACTIVE; 429 con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE); 430 431 if (any_tx_active(i2s)) 432 mod |= 2 << txr_off; 433 else 434 mod |= 1 << txr_off; 435 } else { 436 con |= CON_RXDMA_PAUSE | CON_RXCH_PAUSE; 437 con &= ~CON_RXDMA_ACTIVE; 438 439 if (any_tx_active(i2s)) 440 mod |= 0 << txr_off; 441 else 442 con &= ~CON_ACTIVE; 443 } 444 445 writel(mod, addr + I2SMOD); 446 writel(con, addr + I2SCON); 447 } 448 449 /* Flush FIFO of an interface */ 450 static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush) 451 { 452 void __iomem *fic; 453 u32 val; 454 455 if (!i2s) 456 return; 457 458 if (is_secondary(i2s)) 459 fic = i2s->addr + I2SFICS; 460 else 461 fic = i2s->addr + I2SFIC; 462 463 /* Flush the FIFO */ 464 writel(readl(fic) | flush, fic); 465 466 /* Be patient */ 467 val = msecs_to_loops(1) / 1000; /* 1 usec */ 468 while (--val) 469 cpu_relax(); 470 471 writel(readl(fic) & ~flush, fic); 472 } 473 474 static int i2s_set_sysclk(struct snd_soc_dai *dai, 475 int clk_id, unsigned int rfs, int dir) 476 { 477 struct i2s_dai *i2s = to_info(dai); 478 struct i2s_dai *other = get_other_dai(i2s); 479 const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs; 480 unsigned int cdcon_mask = 1 << i2s_regs->cdclkcon_off; 481 unsigned int rsrc_mask = 1 << i2s_regs->rclksrc_off; 482 u32 mod, mask, val = 0; 483 484 spin_lock(i2s->lock); 485 mod = readl(i2s->addr + I2SMOD); 486 spin_unlock(i2s->lock); 487 488 switch (clk_id) { 489 case SAMSUNG_I2S_OPCLK: 490 mask = MOD_OPCLK_MASK; 491 val = dir; 492 break; 493 case SAMSUNG_I2S_CDCLK: 494 mask = 1 << i2s_regs->cdclkcon_off; 495 /* Shouldn't matter in GATING(CLOCK_IN) mode */ 496 if (dir == SND_SOC_CLOCK_IN) 497 rfs = 0; 498 499 if ((rfs && other && other->rfs && (other->rfs != rfs)) || 500 (any_active(i2s) && 501 (((dir == SND_SOC_CLOCK_IN) 502 && !(mod & cdcon_mask)) || 503 ((dir == SND_SOC_CLOCK_OUT) 504 && (mod & cdcon_mask))))) { 505 dev_err(&i2s->pdev->dev, 506 "%s:%d Other DAI busy\n", __func__, __LINE__); 507 return -EAGAIN; 508 } 509 510 if (dir == SND_SOC_CLOCK_IN) 511 val = 1 << i2s_regs->cdclkcon_off; 512 513 i2s->rfs = rfs; 514 break; 515 516 case SAMSUNG_I2S_RCLKSRC_0: /* clock corrsponding to IISMOD[10] := 0 */ 517 case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */ 518 mask = 1 << i2s_regs->rclksrc_off; 519 520 if ((i2s->quirks & QUIRK_NO_MUXPSR) 521 || (clk_id == SAMSUNG_I2S_RCLKSRC_0)) 522 clk_id = 0; 523 else 524 clk_id = 1; 525 526 if (!any_active(i2s)) { 527 if (i2s->op_clk && !IS_ERR(i2s->op_clk)) { 528 if ((clk_id && !(mod & rsrc_mask)) || 529 (!clk_id && (mod & rsrc_mask))) { 530 clk_disable_unprepare(i2s->op_clk); 531 clk_put(i2s->op_clk); 532 } else { 533 i2s->rclk_srcrate = 534 clk_get_rate(i2s->op_clk); 535 return 0; 536 } 537 } 538 539 if (clk_id) 540 i2s->op_clk = clk_get(&i2s->pdev->dev, 541 "i2s_opclk1"); 542 else 543 i2s->op_clk = clk_get(&i2s->pdev->dev, 544 "i2s_opclk0"); 545 546 if (WARN_ON(IS_ERR(i2s->op_clk))) 547 return PTR_ERR(i2s->op_clk); 548 549 clk_prepare_enable(i2s->op_clk); 550 i2s->rclk_srcrate = clk_get_rate(i2s->op_clk); 551 552 /* Over-ride the other's */ 553 if (other) { 554 other->op_clk = i2s->op_clk; 555 other->rclk_srcrate = i2s->rclk_srcrate; 556 } 557 } else if ((!clk_id && (mod & rsrc_mask)) 558 || (clk_id && !(mod & rsrc_mask))) { 559 dev_err(&i2s->pdev->dev, 560 "%s:%d Other DAI busy\n", __func__, __LINE__); 561 return -EAGAIN; 562 } else { 563 /* Call can't be on the active DAI */ 564 i2s->op_clk = other->op_clk; 565 i2s->rclk_srcrate = other->rclk_srcrate; 566 return 0; 567 } 568 569 if (clk_id == 1) 570 val = 1 << i2s_regs->rclksrc_off; 571 break; 572 default: 573 dev_err(&i2s->pdev->dev, "We don't serve that!\n"); 574 return -EINVAL; 575 } 576 577 spin_lock(i2s->lock); 578 mod = readl(i2s->addr + I2SMOD); 579 mod = (mod & ~mask) | val; 580 writel(mod, i2s->addr + I2SMOD); 581 spin_unlock(i2s->lock); 582 583 return 0; 584 } 585 586 static int i2s_set_fmt(struct snd_soc_dai *dai, 587 unsigned int fmt) 588 { 589 struct i2s_dai *i2s = to_info(dai); 590 int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave; 591 u32 mod, tmp = 0; 592 593 lrp_shift = i2s->variant_regs->lrp_off; 594 sdf_shift = i2s->variant_regs->sdf_off; 595 mod_slave = 1 << i2s->variant_regs->mss_off; 596 597 sdf_mask = MOD_SDF_MASK << sdf_shift; 598 lrp_rlow = MOD_LR_RLOW << lrp_shift; 599 600 /* Format is priority */ 601 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 602 case SND_SOC_DAIFMT_RIGHT_J: 603 tmp |= lrp_rlow; 604 tmp |= (MOD_SDF_MSB << sdf_shift); 605 break; 606 case SND_SOC_DAIFMT_LEFT_J: 607 tmp |= lrp_rlow; 608 tmp |= (MOD_SDF_LSB << sdf_shift); 609 break; 610 case SND_SOC_DAIFMT_I2S: 611 tmp |= (MOD_SDF_IIS << sdf_shift); 612 break; 613 default: 614 dev_err(&i2s->pdev->dev, "Format not supported\n"); 615 return -EINVAL; 616 } 617 618 /* 619 * INV flag is relative to the FORMAT flag - if set it simply 620 * flips the polarity specified by the Standard 621 */ 622 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 623 case SND_SOC_DAIFMT_NB_NF: 624 break; 625 case SND_SOC_DAIFMT_NB_IF: 626 if (tmp & lrp_rlow) 627 tmp &= ~lrp_rlow; 628 else 629 tmp |= lrp_rlow; 630 break; 631 default: 632 dev_err(&i2s->pdev->dev, "Polarity not supported\n"); 633 return -EINVAL; 634 } 635 636 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 637 case SND_SOC_DAIFMT_CBM_CFM: 638 tmp |= mod_slave; 639 break; 640 case SND_SOC_DAIFMT_CBS_CFS: 641 /* Set default source clock in Master mode */ 642 if (i2s->rclk_srcrate == 0) 643 i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0, 644 0, SND_SOC_CLOCK_IN); 645 break; 646 default: 647 dev_err(&i2s->pdev->dev, "master/slave format not supported\n"); 648 return -EINVAL; 649 } 650 651 spin_lock(i2s->lock); 652 mod = readl(i2s->addr + I2SMOD); 653 /* 654 * Don't change the I2S mode if any controller is active on this 655 * channel. 656 */ 657 if (any_active(i2s) && 658 ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) { 659 spin_unlock(i2s->lock); 660 dev_err(&i2s->pdev->dev, 661 "%s:%d Other DAI busy\n", __func__, __LINE__); 662 return -EAGAIN; 663 } 664 665 mod &= ~(sdf_mask | lrp_rlow | mod_slave); 666 mod |= tmp; 667 writel(mod, i2s->addr + I2SMOD); 668 spin_unlock(i2s->lock); 669 670 return 0; 671 } 672 673 static int i2s_hw_params(struct snd_pcm_substream *substream, 674 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) 675 { 676 struct i2s_dai *i2s = to_info(dai); 677 u32 mod, mask = 0, val = 0; 678 679 if (!is_secondary(i2s)) 680 mask |= (MOD_DC2_EN | MOD_DC1_EN); 681 682 switch (params_channels(params)) { 683 case 6: 684 val |= MOD_DC2_EN; 685 case 4: 686 val |= MOD_DC1_EN; 687 break; 688 case 2: 689 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 690 i2s->dma_playback.dma_size = 4; 691 else 692 i2s->dma_capture.dma_size = 4; 693 break; 694 case 1: 695 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 696 i2s->dma_playback.dma_size = 2; 697 else 698 i2s->dma_capture.dma_size = 2; 699 700 break; 701 default: 702 dev_err(&i2s->pdev->dev, "%d channels not supported\n", 703 params_channels(params)); 704 return -EINVAL; 705 } 706 707 if (is_secondary(i2s)) 708 mask |= MOD_BLCS_MASK; 709 else 710 mask |= MOD_BLCP_MASK; 711 712 if (is_manager(i2s)) 713 mask |= MOD_BLC_MASK; 714 715 switch (params_width(params)) { 716 case 8: 717 if (is_secondary(i2s)) 718 val |= MOD_BLCS_8BIT; 719 else 720 val |= MOD_BLCP_8BIT; 721 if (is_manager(i2s)) 722 val |= MOD_BLC_8BIT; 723 break; 724 case 16: 725 if (is_secondary(i2s)) 726 val |= MOD_BLCS_16BIT; 727 else 728 val |= MOD_BLCP_16BIT; 729 if (is_manager(i2s)) 730 val |= MOD_BLC_16BIT; 731 break; 732 case 24: 733 if (is_secondary(i2s)) 734 val |= MOD_BLCS_24BIT; 735 else 736 val |= MOD_BLCP_24BIT; 737 if (is_manager(i2s)) 738 val |= MOD_BLC_24BIT; 739 break; 740 default: 741 dev_err(&i2s->pdev->dev, "Format(%d) not supported\n", 742 params_format(params)); 743 return -EINVAL; 744 } 745 746 spin_lock(i2s->lock); 747 mod = readl(i2s->addr + I2SMOD); 748 mod = (mod & ~mask) | val; 749 writel(mod, i2s->addr + I2SMOD); 750 spin_unlock(i2s->lock); 751 752 samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture); 753 754 i2s->frmclk = params_rate(params); 755 756 return 0; 757 } 758 759 /* We set constraints on the substream acc to the version of I2S */ 760 static int i2s_startup(struct snd_pcm_substream *substream, 761 struct snd_soc_dai *dai) 762 { 763 struct i2s_dai *i2s = to_info(dai); 764 struct i2s_dai *other = get_other_dai(i2s); 765 unsigned long flags; 766 767 spin_lock_irqsave(&lock, flags); 768 769 i2s->mode |= DAI_OPENED; 770 771 if (is_manager(other)) 772 i2s->mode &= ~DAI_MANAGER; 773 else 774 i2s->mode |= DAI_MANAGER; 775 776 if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR)) 777 writel(CON_RSTCLR, i2s->addr + I2SCON); 778 779 spin_unlock_irqrestore(&lock, flags); 780 781 return 0; 782 } 783 784 static void i2s_shutdown(struct snd_pcm_substream *substream, 785 struct snd_soc_dai *dai) 786 { 787 struct i2s_dai *i2s = to_info(dai); 788 struct i2s_dai *other = get_other_dai(i2s); 789 unsigned long flags; 790 791 spin_lock_irqsave(&lock, flags); 792 793 i2s->mode &= ~DAI_OPENED; 794 i2s->mode &= ~DAI_MANAGER; 795 796 if (is_opened(other)) 797 other->mode |= DAI_MANAGER; 798 799 /* Reset any constraint on RFS and BFS */ 800 i2s->rfs = 0; 801 i2s->bfs = 0; 802 803 spin_unlock_irqrestore(&lock, flags); 804 } 805 806 static int config_setup(struct i2s_dai *i2s) 807 { 808 struct i2s_dai *other = get_other_dai(i2s); 809 unsigned rfs, bfs, blc; 810 u32 psr; 811 812 blc = get_blc(i2s); 813 814 bfs = i2s->bfs; 815 816 if (!bfs && other) 817 bfs = other->bfs; 818 819 /* Select least possible multiple(2) if no constraint set */ 820 if (!bfs) 821 bfs = blc * 2; 822 823 rfs = i2s->rfs; 824 825 if (!rfs && other) 826 rfs = other->rfs; 827 828 if ((rfs == 256 || rfs == 512) && (blc == 24)) { 829 dev_err(&i2s->pdev->dev, 830 "%d-RFS not supported for 24-blc\n", rfs); 831 return -EINVAL; 832 } 833 834 if (!rfs) { 835 if (bfs == 16 || bfs == 32) 836 rfs = 256; 837 else 838 rfs = 384; 839 } 840 841 /* If already setup and running */ 842 if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) { 843 dev_err(&i2s->pdev->dev, 844 "%s:%d Other DAI busy\n", __func__, __LINE__); 845 return -EAGAIN; 846 } 847 848 set_bfs(i2s, bfs); 849 set_rfs(i2s, rfs); 850 851 /* Don't bother with PSR in Slave mode */ 852 if (is_slave(i2s)) 853 return 0; 854 855 if (!(i2s->quirks & QUIRK_NO_MUXPSR)) { 856 psr = i2s->rclk_srcrate / i2s->frmclk / rfs; 857 writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR); 858 dev_dbg(&i2s->pdev->dev, 859 "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n", 860 i2s->rclk_srcrate, psr, rfs, bfs); 861 } 862 863 return 0; 864 } 865 866 static int i2s_trigger(struct snd_pcm_substream *substream, 867 int cmd, struct snd_soc_dai *dai) 868 { 869 int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); 870 struct snd_soc_pcm_runtime *rtd = substream->private_data; 871 struct i2s_dai *i2s = to_info(rtd->cpu_dai); 872 unsigned long flags; 873 874 switch (cmd) { 875 case SNDRV_PCM_TRIGGER_START: 876 case SNDRV_PCM_TRIGGER_RESUME: 877 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 878 spin_lock_irqsave(i2s->lock, flags); 879 880 if (config_setup(i2s)) { 881 spin_unlock_irqrestore(i2s->lock, flags); 882 return -EINVAL; 883 } 884 885 if (capture) 886 i2s_rxctrl(i2s, 1); 887 else 888 i2s_txctrl(i2s, 1); 889 890 spin_unlock_irqrestore(i2s->lock, flags); 891 break; 892 case SNDRV_PCM_TRIGGER_STOP: 893 case SNDRV_PCM_TRIGGER_SUSPEND: 894 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 895 spin_lock_irqsave(i2s->lock, flags); 896 897 if (capture) { 898 i2s_rxctrl(i2s, 0); 899 i2s_fifo(i2s, FIC_RXFLUSH); 900 } else { 901 i2s_txctrl(i2s, 0); 902 i2s_fifo(i2s, FIC_TXFLUSH); 903 } 904 905 spin_unlock_irqrestore(i2s->lock, flags); 906 break; 907 } 908 909 return 0; 910 } 911 912 static int i2s_set_clkdiv(struct snd_soc_dai *dai, 913 int div_id, int div) 914 { 915 struct i2s_dai *i2s = to_info(dai); 916 struct i2s_dai *other = get_other_dai(i2s); 917 918 switch (div_id) { 919 case SAMSUNG_I2S_DIV_BCLK: 920 if ((any_active(i2s) && div && (get_bfs(i2s) != div)) 921 || (other && other->bfs && (other->bfs != div))) { 922 dev_err(&i2s->pdev->dev, 923 "%s:%d Other DAI busy\n", __func__, __LINE__); 924 return -EAGAIN; 925 } 926 i2s->bfs = div; 927 break; 928 default: 929 dev_err(&i2s->pdev->dev, 930 "Invalid clock divider(%d)\n", div_id); 931 return -EINVAL; 932 } 933 934 return 0; 935 } 936 937 static snd_pcm_sframes_t 938 i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) 939 { 940 struct i2s_dai *i2s = to_info(dai); 941 u32 reg = readl(i2s->addr + I2SFIC); 942 snd_pcm_sframes_t delay; 943 const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs; 944 945 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) 946 delay = FIC_RXCOUNT(reg); 947 else if (is_secondary(i2s)) 948 delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS)); 949 else 950 delay = (reg >> i2s_regs->ftx0cnt_off) & 0x7f; 951 952 return delay; 953 } 954 955 #ifdef CONFIG_PM 956 static int i2s_suspend(struct snd_soc_dai *dai) 957 { 958 struct i2s_dai *i2s = to_info(dai); 959 960 i2s->suspend_i2smod = readl(i2s->addr + I2SMOD); 961 i2s->suspend_i2scon = readl(i2s->addr + I2SCON); 962 i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR); 963 964 return 0; 965 } 966 967 static int i2s_resume(struct snd_soc_dai *dai) 968 { 969 struct i2s_dai *i2s = to_info(dai); 970 971 writel(i2s->suspend_i2scon, i2s->addr + I2SCON); 972 writel(i2s->suspend_i2smod, i2s->addr + I2SMOD); 973 writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR); 974 975 return 0; 976 } 977 #else 978 #define i2s_suspend NULL 979 #define i2s_resume NULL 980 #endif 981 982 static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) 983 { 984 struct i2s_dai *i2s = to_info(dai); 985 struct i2s_dai *other = get_other_dai(i2s); 986 unsigned long flags; 987 988 if (is_secondary(i2s)) { /* If this is probe on the secondary DAI */ 989 samsung_asoc_init_dma_data(dai, &other->sec_dai->dma_playback, 990 NULL); 991 } else { 992 samsung_asoc_init_dma_data(dai, &i2s->dma_playback, 993 &i2s->dma_capture); 994 995 if (i2s->quirks & QUIRK_NEED_RSTCLR) 996 writel(CON_RSTCLR, i2s->addr + I2SCON); 997 998 if (i2s->quirks & QUIRK_SUPPORTS_IDMA) 999 idma_reg_addr_init(i2s->addr, 1000 i2s->sec_dai->idma_playback.dma_addr); 1001 } 1002 1003 /* Reset any constraint on RFS and BFS */ 1004 i2s->rfs = 0; 1005 i2s->bfs = 0; 1006 i2s->rclk_srcrate = 0; 1007 1008 spin_lock_irqsave(i2s->lock, flags); 1009 i2s_txctrl(i2s, 0); 1010 i2s_rxctrl(i2s, 0); 1011 i2s_fifo(i2s, FIC_TXFLUSH); 1012 i2s_fifo(other, FIC_TXFLUSH); 1013 i2s_fifo(i2s, FIC_RXFLUSH); 1014 spin_unlock_irqrestore(i2s->lock, flags); 1015 1016 /* Gate CDCLK by default */ 1017 if (!is_opened(other)) 1018 i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, 1019 0, SND_SOC_CLOCK_IN); 1020 1021 return 0; 1022 } 1023 1024 static int samsung_i2s_dai_remove(struct snd_soc_dai *dai) 1025 { 1026 struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai); 1027 1028 if (!is_secondary(i2s)) { 1029 if (i2s->quirks & QUIRK_NEED_RSTCLR) { 1030 spin_lock(i2s->lock); 1031 writel(0, i2s->addr + I2SCON); 1032 spin_unlock(i2s->lock); 1033 } 1034 } 1035 1036 return 0; 1037 } 1038 1039 static const struct snd_soc_dai_ops samsung_i2s_dai_ops = { 1040 .trigger = i2s_trigger, 1041 .hw_params = i2s_hw_params, 1042 .set_fmt = i2s_set_fmt, 1043 .set_clkdiv = i2s_set_clkdiv, 1044 .set_sysclk = i2s_set_sysclk, 1045 .startup = i2s_startup, 1046 .shutdown = i2s_shutdown, 1047 .delay = i2s_delay, 1048 }; 1049 1050 static const struct snd_soc_component_driver samsung_i2s_component = { 1051 .name = "samsung-i2s", 1052 }; 1053 1054 #define SAMSUNG_I2S_RATES SNDRV_PCM_RATE_8000_96000 1055 1056 #define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \ 1057 SNDRV_PCM_FMTBIT_S16_LE | \ 1058 SNDRV_PCM_FMTBIT_S24_LE) 1059 1060 static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec) 1061 { 1062 struct i2s_dai *i2s; 1063 int ret; 1064 1065 i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL); 1066 if (i2s == NULL) 1067 return NULL; 1068 1069 i2s->pdev = pdev; 1070 i2s->pri_dai = NULL; 1071 i2s->sec_dai = NULL; 1072 i2s->i2s_dai_drv.symmetric_rates = 1; 1073 i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe; 1074 i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove; 1075 i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops; 1076 i2s->i2s_dai_drv.suspend = i2s_suspend; 1077 i2s->i2s_dai_drv.resume = i2s_resume; 1078 i2s->i2s_dai_drv.playback.channels_min = 1; 1079 i2s->i2s_dai_drv.playback.channels_max = 2; 1080 i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES; 1081 i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS; 1082 1083 if (!sec) { 1084 i2s->i2s_dai_drv.capture.channels_min = 1; 1085 i2s->i2s_dai_drv.capture.channels_max = 2; 1086 i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES; 1087 i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS; 1088 dev_set_drvdata(&i2s->pdev->dev, i2s); 1089 } else { /* Create a new platform_device for Secondary */ 1090 i2s->pdev = platform_device_alloc("samsung-i2s-sec", -1); 1091 if (!i2s->pdev) 1092 return NULL; 1093 1094 i2s->pdev->dev.parent = &pdev->dev; 1095 1096 platform_set_drvdata(i2s->pdev, i2s); 1097 ret = platform_device_add(i2s->pdev); 1098 if (ret < 0) 1099 return NULL; 1100 } 1101 1102 return i2s; 1103 } 1104 1105 static const struct of_device_id exynos_i2s_match[]; 1106 1107 static inline const struct samsung_i2s_dai_data *samsung_i2s_get_driver_data( 1108 struct platform_device *pdev) 1109 { 1110 if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) { 1111 const struct of_device_id *match; 1112 match = of_match_node(exynos_i2s_match, pdev->dev.of_node); 1113 return match ? match->data : NULL; 1114 } else { 1115 return (struct samsung_i2s_dai_data *) 1116 platform_get_device_id(pdev)->driver_data; 1117 } 1118 } 1119 1120 #ifdef CONFIG_PM 1121 static int i2s_runtime_suspend(struct device *dev) 1122 { 1123 struct i2s_dai *i2s = dev_get_drvdata(dev); 1124 1125 clk_disable_unprepare(i2s->clk); 1126 1127 return 0; 1128 } 1129 1130 static int i2s_runtime_resume(struct device *dev) 1131 { 1132 struct i2s_dai *i2s = dev_get_drvdata(dev); 1133 1134 clk_prepare_enable(i2s->clk); 1135 1136 return 0; 1137 } 1138 #endif /* CONFIG_PM */ 1139 1140 static void i2s_unregister_clocks(struct i2s_dai *i2s) 1141 { 1142 int i; 1143 1144 for (i = 0; i < i2s->clk_data.clk_num; i++) { 1145 if (!IS_ERR(i2s->clk_table[i])) 1146 clk_unregister(i2s->clk_table[i]); 1147 } 1148 } 1149 1150 static void i2s_unregister_clock_provider(struct platform_device *pdev) 1151 { 1152 struct i2s_dai *i2s = dev_get_drvdata(&pdev->dev); 1153 1154 of_clk_del_provider(pdev->dev.of_node); 1155 i2s_unregister_clocks(i2s); 1156 } 1157 1158 static int i2s_register_clock_provider(struct platform_device *pdev) 1159 { 1160 struct device *dev = &pdev->dev; 1161 struct i2s_dai *i2s = dev_get_drvdata(dev); 1162 const char *clk_name[2] = { "i2s_opclk0", "i2s_opclk1" }; 1163 const char *p_names[2] = { NULL }; 1164 const struct samsung_i2s_variant_regs *reg_info = i2s->variant_regs; 1165 struct clk *rclksrc; 1166 int ret, i; 1167 1168 /* Register the clock provider only if it's expected in the DTB */ 1169 if (!of_find_property(dev->of_node, "#clock-cells", NULL)) 1170 return 0; 1171 1172 /* Get the RCLKSRC mux clock parent clock names */ 1173 for (i = 0; i < ARRAY_SIZE(p_names); i++) { 1174 rclksrc = clk_get(dev, clk_name[i]); 1175 if (IS_ERR(rclksrc)) 1176 continue; 1177 p_names[i] = __clk_get_name(rclksrc); 1178 clk_put(rclksrc); 1179 } 1180 1181 if (!(i2s->quirks & QUIRK_NO_MUXPSR)) { 1182 /* Activate the prescaler */ 1183 u32 val = readl(i2s->addr + I2SPSR); 1184 writel(val | PSR_PSREN, i2s->addr + I2SPSR); 1185 1186 i2s->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(NULL, 1187 "i2s_rclksrc", p_names, ARRAY_SIZE(p_names), 1188 CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT, 1189 i2s->addr + I2SMOD, reg_info->rclksrc_off, 1190 1, 0, i2s->lock); 1191 1192 i2s->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(NULL, 1193 "i2s_presc", "i2s_rclksrc", 1194 CLK_SET_RATE_PARENT, 1195 i2s->addr + I2SPSR, 8, 6, 0, i2s->lock); 1196 1197 p_names[0] = "i2s_presc"; 1198 i2s->clk_data.clk_num = 2; 1199 } 1200 of_property_read_string_index(dev->of_node, 1201 "clock-output-names", 0, &clk_name[0]); 1202 1203 i2s->clk_table[CLK_I2S_CDCLK] = clk_register_gate(NULL, clk_name[0], 1204 p_names[0], CLK_SET_RATE_PARENT, 1205 i2s->addr + I2SMOD, reg_info->cdclkcon_off, 1206 CLK_GATE_SET_TO_DISABLE, i2s->lock); 1207 1208 i2s->clk_data.clk_num += 1; 1209 i2s->clk_data.clks = i2s->clk_table; 1210 1211 ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get, 1212 &i2s->clk_data); 1213 if (ret < 0) { 1214 dev_err(dev, "failed to add clock provider: %d\n", ret); 1215 i2s_unregister_clocks(i2s); 1216 } 1217 1218 return ret; 1219 } 1220 1221 static int samsung_i2s_probe(struct platform_device *pdev) 1222 { 1223 struct i2s_dai *pri_dai, *sec_dai = NULL; 1224 struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data; 1225 struct samsung_i2s *i2s_cfg = NULL; 1226 struct resource *res; 1227 u32 regs_base, quirks = 0, idma_addr = 0; 1228 struct device_node *np = pdev->dev.of_node; 1229 const struct samsung_i2s_dai_data *i2s_dai_data; 1230 int ret; 1231 1232 /* Call during Seconday interface registration */ 1233 i2s_dai_data = samsung_i2s_get_driver_data(pdev); 1234 1235 if (i2s_dai_data->dai_type == TYPE_SEC) { 1236 sec_dai = dev_get_drvdata(&pdev->dev); 1237 if (!sec_dai) { 1238 dev_err(&pdev->dev, "Unable to get drvdata\n"); 1239 return -EFAULT; 1240 } 1241 ret = devm_snd_soc_register_component(&sec_dai->pdev->dev, 1242 &samsung_i2s_component, 1243 &sec_dai->i2s_dai_drv, 1); 1244 if (ret != 0) 1245 return ret; 1246 1247 return samsung_asoc_dma_platform_register(&pdev->dev); 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 res = platform_get_resource(pdev, IORESOURCE_DMA, 0); 1261 if (!res) { 1262 dev_err(&pdev->dev, 1263 "Unable to get I2S-TX dma resource\n"); 1264 return -ENXIO; 1265 } 1266 pri_dai->dma_playback.channel = res->start; 1267 1268 res = platform_get_resource(pdev, IORESOURCE_DMA, 1); 1269 if (!res) { 1270 dev_err(&pdev->dev, 1271 "Unable to get I2S-RX dma resource\n"); 1272 return -ENXIO; 1273 } 1274 pri_dai->dma_capture.channel = res->start; 1275 1276 if (i2s_pdata == NULL) { 1277 dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n"); 1278 return -EINVAL; 1279 } 1280 1281 if (&i2s_pdata->type) 1282 i2s_cfg = &i2s_pdata->type.i2s; 1283 1284 if (i2s_cfg) { 1285 quirks = i2s_cfg->quirks; 1286 idma_addr = i2s_cfg->idma_addr; 1287 } 1288 } else { 1289 quirks = i2s_dai_data->quirks; 1290 if (of_property_read_u32(np, "samsung,idma-addr", 1291 &idma_addr)) { 1292 if (quirks & QUIRK_SUPPORTS_IDMA) { 1293 dev_info(&pdev->dev, "idma address is not"\ 1294 "specified"); 1295 } 1296 } 1297 } 1298 1299 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1300 pri_dai->addr = devm_ioremap_resource(&pdev->dev, res); 1301 if (IS_ERR(pri_dai->addr)) 1302 return PTR_ERR(pri_dai->addr); 1303 1304 regs_base = res->start; 1305 1306 pri_dai->clk = devm_clk_get(&pdev->dev, "iis"); 1307 if (IS_ERR(pri_dai->clk)) { 1308 dev_err(&pdev->dev, "Failed to get iis clock\n"); 1309 return PTR_ERR(pri_dai->clk); 1310 } 1311 1312 ret = clk_prepare_enable(pri_dai->clk); 1313 if (ret != 0) { 1314 dev_err(&pdev->dev, "failed to enable clock: %d\n", ret); 1315 return ret; 1316 } 1317 pri_dai->dma_playback.dma_addr = regs_base + I2STXD; 1318 pri_dai->dma_capture.dma_addr = regs_base + I2SRXD; 1319 pri_dai->dma_playback.ch_name = "tx"; 1320 pri_dai->dma_capture.ch_name = "rx"; 1321 pri_dai->dma_playback.dma_size = 4; 1322 pri_dai->dma_capture.dma_size = 4; 1323 pri_dai->quirks = quirks; 1324 pri_dai->variant_regs = i2s_dai_data->i2s_variant_regs; 1325 1326 if (quirks & QUIRK_PRI_6CHAN) 1327 pri_dai->i2s_dai_drv.playback.channels_max = 6; 1328 1329 if (quirks & QUIRK_SEC_DAI) { 1330 sec_dai = i2s_alloc_dai(pdev, true); 1331 if (!sec_dai) { 1332 dev_err(&pdev->dev, "Unable to alloc I2S_sec\n"); 1333 return -ENOMEM; 1334 } 1335 1336 sec_dai->lock = &pri_dai->spinlock; 1337 sec_dai->variant_regs = pri_dai->variant_regs; 1338 sec_dai->dma_playback.dma_addr = regs_base + I2STXDS; 1339 sec_dai->dma_playback.ch_name = "tx-sec"; 1340 1341 if (!np) { 1342 res = platform_get_resource(pdev, IORESOURCE_DMA, 2); 1343 if (res) 1344 sec_dai->dma_playback.channel = res->start; 1345 } 1346 1347 sec_dai->dma_playback.dma_size = 4; 1348 sec_dai->addr = pri_dai->addr; 1349 sec_dai->clk = pri_dai->clk; 1350 sec_dai->quirks = quirks; 1351 sec_dai->idma_playback.dma_addr = idma_addr; 1352 sec_dai->pri_dai = pri_dai; 1353 pri_dai->sec_dai = sec_dai; 1354 } 1355 1356 if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) { 1357 dev_err(&pdev->dev, "Unable to configure gpio\n"); 1358 return -EINVAL; 1359 } 1360 1361 devm_snd_soc_register_component(&pri_dai->pdev->dev, 1362 &samsung_i2s_component, 1363 &pri_dai->i2s_dai_drv, 1); 1364 1365 pm_runtime_enable(&pdev->dev); 1366 1367 ret = samsung_asoc_dma_platform_register(&pdev->dev); 1368 if (ret != 0) 1369 return ret; 1370 1371 return i2s_register_clock_provider(pdev); 1372 } 1373 1374 static int samsung_i2s_remove(struct platform_device *pdev) 1375 { 1376 struct i2s_dai *i2s, *other; 1377 1378 i2s = dev_get_drvdata(&pdev->dev); 1379 other = get_other_dai(i2s); 1380 1381 if (other) { 1382 other->pri_dai = NULL; 1383 other->sec_dai = NULL; 1384 } else { 1385 pm_runtime_disable(&pdev->dev); 1386 } 1387 1388 if (!is_secondary(i2s)) { 1389 i2s_unregister_clock_provider(pdev); 1390 clk_disable_unprepare(i2s->clk); 1391 } 1392 1393 i2s->pri_dai = NULL; 1394 i2s->sec_dai = NULL; 1395 1396 return 0; 1397 } 1398 1399 static const struct samsung_i2s_variant_regs i2sv3_regs = { 1400 .bfs_off = 1, 1401 .rfs_off = 3, 1402 .sdf_off = 5, 1403 .txr_off = 8, 1404 .rclksrc_off = 10, 1405 .mss_off = 11, 1406 .cdclkcon_off = 12, 1407 .lrp_off = 7, 1408 .bfs_mask = 0x3, 1409 .rfs_mask = 0x3, 1410 .ftx0cnt_off = 8, 1411 }; 1412 1413 static const struct samsung_i2s_variant_regs i2sv6_regs = { 1414 .bfs_off = 0, 1415 .rfs_off = 4, 1416 .sdf_off = 6, 1417 .txr_off = 8, 1418 .rclksrc_off = 10, 1419 .mss_off = 11, 1420 .cdclkcon_off = 12, 1421 .lrp_off = 15, 1422 .bfs_mask = 0xf, 1423 .rfs_mask = 0x3, 1424 .ftx0cnt_off = 8, 1425 }; 1426 1427 static const struct samsung_i2s_variant_regs i2sv7_regs = { 1428 .bfs_off = 0, 1429 .rfs_off = 4, 1430 .sdf_off = 7, 1431 .txr_off = 9, 1432 .rclksrc_off = 11, 1433 .mss_off = 12, 1434 .cdclkcon_off = 22, 1435 .lrp_off = 15, 1436 .bfs_mask = 0xf, 1437 .rfs_mask = 0x7, 1438 .ftx0cnt_off = 0, 1439 }; 1440 1441 static const struct samsung_i2s_variant_regs i2sv5_i2s1_regs = { 1442 .bfs_off = 0, 1443 .rfs_off = 3, 1444 .sdf_off = 6, 1445 .txr_off = 8, 1446 .rclksrc_off = 10, 1447 .mss_off = 11, 1448 .cdclkcon_off = 12, 1449 .lrp_off = 15, 1450 .bfs_mask = 0x7, 1451 .rfs_mask = 0x7, 1452 .ftx0cnt_off = 8, 1453 }; 1454 1455 static const struct samsung_i2s_dai_data i2sv3_dai_type = { 1456 .dai_type = TYPE_PRI, 1457 .quirks = QUIRK_NO_MUXPSR, 1458 .i2s_variant_regs = &i2sv3_regs, 1459 }; 1460 1461 static const struct samsung_i2s_dai_data i2sv5_dai_type = { 1462 .dai_type = TYPE_PRI, 1463 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | 1464 QUIRK_SUPPORTS_IDMA, 1465 .i2s_variant_regs = &i2sv3_regs, 1466 }; 1467 1468 static const struct samsung_i2s_dai_data i2sv6_dai_type = { 1469 .dai_type = TYPE_PRI, 1470 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | 1471 QUIRK_SUPPORTS_TDM | QUIRK_SUPPORTS_IDMA, 1472 .i2s_variant_regs = &i2sv6_regs, 1473 }; 1474 1475 static const struct samsung_i2s_dai_data i2sv7_dai_type = { 1476 .dai_type = TYPE_PRI, 1477 .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | 1478 QUIRK_SUPPORTS_TDM, 1479 .i2s_variant_regs = &i2sv7_regs, 1480 }; 1481 1482 static const struct samsung_i2s_dai_data i2sv5_dai_type_i2s1 = { 1483 .dai_type = TYPE_PRI, 1484 .quirks = QUIRK_PRI_6CHAN | QUIRK_NEED_RSTCLR, 1485 .i2s_variant_regs = &i2sv5_i2s1_regs, 1486 }; 1487 1488 static const struct samsung_i2s_dai_data samsung_dai_type_pri = { 1489 .dai_type = TYPE_PRI, 1490 }; 1491 1492 static const struct samsung_i2s_dai_data samsung_dai_type_sec = { 1493 .dai_type = TYPE_SEC, 1494 }; 1495 1496 static const struct platform_device_id samsung_i2s_driver_ids[] = { 1497 { 1498 .name = "samsung-i2s", 1499 .driver_data = (kernel_ulong_t)&i2sv3_dai_type, 1500 }, { 1501 .name = "samsung-i2s-sec", 1502 .driver_data = (kernel_ulong_t)&samsung_dai_type_sec, 1503 }, { 1504 .name = "samsung-i2sv4", 1505 .driver_data = (kernel_ulong_t)&i2sv5_dai_type, 1506 }, 1507 {}, 1508 }; 1509 MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids); 1510 1511 #ifdef CONFIG_OF 1512 static const struct of_device_id exynos_i2s_match[] = { 1513 { 1514 .compatible = "samsung,s3c6410-i2s", 1515 .data = &i2sv3_dai_type, 1516 }, { 1517 .compatible = "samsung,s5pv210-i2s", 1518 .data = &i2sv5_dai_type, 1519 }, { 1520 .compatible = "samsung,exynos5420-i2s", 1521 .data = &i2sv6_dai_type, 1522 }, { 1523 .compatible = "samsung,exynos7-i2s", 1524 .data = &i2sv7_dai_type, 1525 }, { 1526 .compatible = "samsung,exynos7-i2s1", 1527 .data = &i2sv5_dai_type_i2s1, 1528 }, 1529 {}, 1530 }; 1531 MODULE_DEVICE_TABLE(of, exynos_i2s_match); 1532 #endif 1533 1534 static const struct dev_pm_ops samsung_i2s_pm = { 1535 SET_RUNTIME_PM_OPS(i2s_runtime_suspend, 1536 i2s_runtime_resume, NULL) 1537 }; 1538 1539 static struct platform_driver samsung_i2s_driver = { 1540 .probe = samsung_i2s_probe, 1541 .remove = samsung_i2s_remove, 1542 .id_table = samsung_i2s_driver_ids, 1543 .driver = { 1544 .name = "samsung-i2s", 1545 .of_match_table = of_match_ptr(exynos_i2s_match), 1546 .pm = &samsung_i2s_pm, 1547 }, 1548 }; 1549 1550 module_platform_driver(samsung_i2s_driver); 1551 1552 /* Module information */ 1553 MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>"); 1554 MODULE_DESCRIPTION("Samsung I2S Interface"); 1555 MODULE_ALIAS("platform:samsung-i2s"); 1556 MODULE_LICENSE("GPL"); 1557