1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // soc-ops.c -- Generic ASoC operations 4 // 5 // Copyright 2005 Wolfson Microelectronics PLC. 6 // Copyright 2005 Openedhand Ltd. 7 // Copyright (C) 2010 Slimlogic Ltd. 8 // Copyright (C) 2010 Texas Instruments Inc. 9 // 10 // Author: Liam Girdwood <lrg@slimlogic.co.uk> 11 // with code, comments and ideas from :- 12 // Richard Purdie <richard@openedhand.com> 13 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/init.h> 17 #include <linux/delay.h> 18 #include <linux/pm.h> 19 #include <linux/bitops.h> 20 #include <linux/ctype.h> 21 #include <linux/slab.h> 22 #include <sound/core.h> 23 #include <sound/jack.h> 24 #include <sound/pcm.h> 25 #include <sound/pcm_params.h> 26 #include <sound/soc.h> 27 #include <sound/soc-dpcm.h> 28 #include <sound/initval.h> 29 30 /** 31 * snd_soc_info_enum_double - enumerated double mixer info callback 32 * @kcontrol: mixer control 33 * @uinfo: control element information 34 * 35 * Callback to provide information about a double enumerated 36 * mixer control. 37 * 38 * Returns 0 for success. 39 */ 40 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, 41 struct snd_ctl_elem_info *uinfo) 42 { 43 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 44 45 return snd_ctl_enum_info(uinfo, e->shift_l == e->shift_r ? 1 : 2, 46 e->items, e->texts); 47 } 48 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); 49 50 /** 51 * snd_soc_get_enum_double - enumerated double mixer get callback 52 * @kcontrol: mixer control 53 * @ucontrol: control element information 54 * 55 * Callback to get the value of a double enumerated mixer. 56 * 57 * Returns 0 for success. 58 */ 59 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, 60 struct snd_ctl_elem_value *ucontrol) 61 { 62 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 63 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 64 unsigned int val, item; 65 unsigned int reg_val; 66 67 reg_val = snd_soc_component_read(component, e->reg); 68 val = (reg_val >> e->shift_l) & e->mask; 69 item = snd_soc_enum_val_to_item(e, val); 70 ucontrol->value.enumerated.item[0] = item; 71 if (e->shift_l != e->shift_r) { 72 val = (reg_val >> e->shift_r) & e->mask; 73 item = snd_soc_enum_val_to_item(e, val); 74 ucontrol->value.enumerated.item[1] = item; 75 } 76 77 return 0; 78 } 79 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); 80 81 /** 82 * snd_soc_put_enum_double - enumerated double mixer put callback 83 * @kcontrol: mixer control 84 * @ucontrol: control element information 85 * 86 * Callback to set the value of a double enumerated mixer. 87 * 88 * Returns 0 for success. 89 */ 90 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, 91 struct snd_ctl_elem_value *ucontrol) 92 { 93 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 94 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 95 unsigned int *item = ucontrol->value.enumerated.item; 96 unsigned int val; 97 unsigned int mask; 98 99 if (item[0] >= e->items) 100 return -EINVAL; 101 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l; 102 mask = e->mask << e->shift_l; 103 if (e->shift_l != e->shift_r) { 104 if (item[1] >= e->items) 105 return -EINVAL; 106 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r; 107 mask |= e->mask << e->shift_r; 108 } 109 110 return snd_soc_component_update_bits(component, e->reg, mask, val); 111 } 112 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); 113 114 /** 115 * snd_soc_read_signed - Read a codec register and interpret as signed value 116 * @component: component 117 * @reg: Register to read 118 * @mask: Mask to use after shifting the register value 119 * @shift: Right shift of register value 120 * @sign_bit: Bit that describes if a number is negative or not. 121 * @signed_val: Pointer to where the read value should be stored 122 * 123 * This functions reads a codec register. The register value is shifted right 124 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates 125 * the given registervalue into a signed integer if sign_bit is non-zero. 126 * 127 * Returns 0 on sucess, otherwise an error value 128 */ 129 static int snd_soc_read_signed(struct snd_soc_component *component, 130 unsigned int reg, unsigned int mask, unsigned int shift, 131 unsigned int sign_bit, int *signed_val) 132 { 133 int ret; 134 unsigned int val; 135 136 val = snd_soc_component_read(component, reg); 137 val = (val >> shift) & mask; 138 139 if (!sign_bit) { 140 *signed_val = val; 141 return 0; 142 } 143 144 /* non-negative number */ 145 if (!(val & BIT(sign_bit))) { 146 *signed_val = val; 147 return 0; 148 } 149 150 ret = val; 151 152 /* 153 * The register most probably does not contain a full-sized int. 154 * Instead we have an arbitrary number of bits in a signed 155 * representation which has to be translated into a full-sized int. 156 * This is done by filling up all bits above the sign-bit. 157 */ 158 ret |= ~((int)(BIT(sign_bit) - 1)); 159 160 *signed_val = ret; 161 162 return 0; 163 } 164 165 /** 166 * snd_soc_info_volsw - single mixer info callback 167 * @kcontrol: mixer control 168 * @uinfo: control element information 169 * 170 * Callback to provide information about a single mixer control, or a double 171 * mixer control that spans 2 registers. 172 * 173 * Returns 0 for success. 174 */ 175 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, 176 struct snd_ctl_elem_info *uinfo) 177 { 178 struct soc_mixer_control *mc = 179 (struct soc_mixer_control *)kcontrol->private_value; 180 int platform_max; 181 182 if (!mc->platform_max) 183 mc->platform_max = mc->max; 184 platform_max = mc->platform_max; 185 186 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) 187 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 188 else 189 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 190 191 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; 192 uinfo->value.integer.min = 0; 193 uinfo->value.integer.max = platform_max - mc->min; 194 return 0; 195 } 196 EXPORT_SYMBOL_GPL(snd_soc_info_volsw); 197 198 /** 199 * snd_soc_info_volsw_sx - Mixer info callback for SX TLV controls 200 * @kcontrol: mixer control 201 * @uinfo: control element information 202 * 203 * Callback to provide information about a single mixer control, or a double 204 * mixer control that spans 2 registers of the SX TLV type. SX TLV controls 205 * have a range that represents both positive and negative values either side 206 * of zero but without a sign bit. 207 * 208 * Returns 0 for success. 209 */ 210 int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol, 211 struct snd_ctl_elem_info *uinfo) 212 { 213 struct soc_mixer_control *mc = 214 (struct soc_mixer_control *)kcontrol->private_value; 215 216 snd_soc_info_volsw(kcontrol, uinfo); 217 /* Max represents the number of levels in an SX control not the 218 * maximum value, so add the minimum value back on 219 */ 220 uinfo->value.integer.max += mc->min; 221 222 return 0; 223 } 224 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_sx); 225 226 /** 227 * snd_soc_get_volsw - single mixer get callback 228 * @kcontrol: mixer control 229 * @ucontrol: control element information 230 * 231 * Callback to get the value of a single mixer control, or a double mixer 232 * control that spans 2 registers. 233 * 234 * Returns 0 for success. 235 */ 236 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, 237 struct snd_ctl_elem_value *ucontrol) 238 { 239 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 240 struct soc_mixer_control *mc = 241 (struct soc_mixer_control *)kcontrol->private_value; 242 unsigned int reg = mc->reg; 243 unsigned int reg2 = mc->rreg; 244 unsigned int shift = mc->shift; 245 unsigned int rshift = mc->rshift; 246 int max = mc->max; 247 int min = mc->min; 248 int sign_bit = mc->sign_bit; 249 unsigned int mask = (1 << fls(max)) - 1; 250 unsigned int invert = mc->invert; 251 int val; 252 int ret; 253 254 if (sign_bit) 255 mask = BIT(sign_bit + 1) - 1; 256 257 ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val); 258 if (ret) 259 return ret; 260 261 ucontrol->value.integer.value[0] = val - min; 262 if (invert) 263 ucontrol->value.integer.value[0] = 264 max - ucontrol->value.integer.value[0]; 265 266 if (snd_soc_volsw_is_stereo(mc)) { 267 if (reg == reg2) 268 ret = snd_soc_read_signed(component, reg, mask, rshift, 269 sign_bit, &val); 270 else 271 ret = snd_soc_read_signed(component, reg2, mask, shift, 272 sign_bit, &val); 273 if (ret) 274 return ret; 275 276 ucontrol->value.integer.value[1] = val - min; 277 if (invert) 278 ucontrol->value.integer.value[1] = 279 max - ucontrol->value.integer.value[1]; 280 } 281 282 return 0; 283 } 284 EXPORT_SYMBOL_GPL(snd_soc_get_volsw); 285 286 /** 287 * snd_soc_put_volsw - single mixer put callback 288 * @kcontrol: mixer control 289 * @ucontrol: control element information 290 * 291 * Callback to set the value of a single mixer control, or a double mixer 292 * control that spans 2 registers. 293 * 294 * Returns 0 for success. 295 */ 296 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, 297 struct snd_ctl_elem_value *ucontrol) 298 { 299 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 300 struct soc_mixer_control *mc = 301 (struct soc_mixer_control *)kcontrol->private_value; 302 unsigned int reg = mc->reg; 303 unsigned int reg2 = mc->rreg; 304 unsigned int shift = mc->shift; 305 unsigned int rshift = mc->rshift; 306 int max = mc->max; 307 int min = mc->min; 308 unsigned int sign_bit = mc->sign_bit; 309 unsigned int mask = (1 << fls(max)) - 1; 310 unsigned int invert = mc->invert; 311 int err, ret; 312 bool type_2r = false; 313 unsigned int val2 = 0; 314 unsigned int val, val_mask; 315 316 if (sign_bit) 317 mask = BIT(sign_bit + 1) - 1; 318 319 val = ucontrol->value.integer.value[0]; 320 if (mc->platform_max && val > mc->platform_max) 321 return -EINVAL; 322 if (val > max - min) 323 return -EINVAL; 324 if (val < 0) 325 return -EINVAL; 326 val = (val + min) & mask; 327 if (invert) 328 val = max - val; 329 val_mask = mask << shift; 330 val = val << shift; 331 if (snd_soc_volsw_is_stereo(mc)) { 332 val2 = ucontrol->value.integer.value[1]; 333 if (mc->platform_max && val2 > mc->platform_max) 334 return -EINVAL; 335 if (val2 > max - min) 336 return -EINVAL; 337 if (val2 < 0) 338 return -EINVAL; 339 val2 = (val2 + min) & mask; 340 if (invert) 341 val2 = max - val2; 342 if (reg == reg2) { 343 val_mask |= mask << rshift; 344 val |= val2 << rshift; 345 } else { 346 val2 = val2 << shift; 347 type_2r = true; 348 } 349 } 350 err = snd_soc_component_update_bits(component, reg, val_mask, val); 351 if (err < 0) 352 return err; 353 ret = err; 354 355 if (type_2r) { 356 err = snd_soc_component_update_bits(component, reg2, val_mask, 357 val2); 358 /* Don't discard any error code or drop change flag */ 359 if (ret == 0 || err < 0) { 360 ret = err; 361 } 362 } 363 364 return ret; 365 } 366 EXPORT_SYMBOL_GPL(snd_soc_put_volsw); 367 368 /** 369 * snd_soc_get_volsw_sx - single mixer get callback 370 * @kcontrol: mixer control 371 * @ucontrol: control element information 372 * 373 * Callback to get the value of a single mixer control, or a double mixer 374 * control that spans 2 registers. 375 * 376 * Returns 0 for success. 377 */ 378 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol, 379 struct snd_ctl_elem_value *ucontrol) 380 { 381 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 382 struct soc_mixer_control *mc = 383 (struct soc_mixer_control *)kcontrol->private_value; 384 unsigned int reg = mc->reg; 385 unsigned int reg2 = mc->rreg; 386 unsigned int shift = mc->shift; 387 unsigned int rshift = mc->rshift; 388 int max = mc->max; 389 int min = mc->min; 390 unsigned int mask = (1U << (fls(min + max) - 1)) - 1; 391 unsigned int val; 392 393 val = snd_soc_component_read(component, reg); 394 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask; 395 396 if (snd_soc_volsw_is_stereo(mc)) { 397 val = snd_soc_component_read(component, reg2); 398 val = ((val >> rshift) - min) & mask; 399 ucontrol->value.integer.value[1] = val; 400 } 401 402 return 0; 403 } 404 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx); 405 406 /** 407 * snd_soc_put_volsw_sx - double mixer set callback 408 * @kcontrol: mixer control 409 * @ucontrol: control element information 410 * 411 * Callback to set the value of a double mixer control that spans 2 registers. 412 * 413 * Returns 0 for success. 414 */ 415 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, 416 struct snd_ctl_elem_value *ucontrol) 417 { 418 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 419 struct soc_mixer_control *mc = 420 (struct soc_mixer_control *)kcontrol->private_value; 421 422 unsigned int reg = mc->reg; 423 unsigned int reg2 = mc->rreg; 424 unsigned int shift = mc->shift; 425 unsigned int rshift = mc->rshift; 426 int max = mc->max; 427 int min = mc->min; 428 unsigned int mask = (1U << (fls(min + max) - 1)) - 1; 429 int err = 0; 430 unsigned int val, val_mask; 431 432 val = ucontrol->value.integer.value[0]; 433 if (mc->platform_max && val > mc->platform_max) 434 return -EINVAL; 435 if (val > max - min) 436 return -EINVAL; 437 if (val < 0) 438 return -EINVAL; 439 val_mask = mask << shift; 440 val = (val + min) & mask; 441 val = val << shift; 442 443 err = snd_soc_component_update_bits(component, reg, val_mask, val); 444 if (err < 0) 445 return err; 446 447 if (snd_soc_volsw_is_stereo(mc)) { 448 unsigned int val2; 449 450 val_mask = mask << rshift; 451 val2 = (ucontrol->value.integer.value[1] + min) & mask; 452 val2 = val2 << rshift; 453 454 err = snd_soc_component_update_bits(component, reg2, val_mask, 455 val2); 456 } 457 return err; 458 } 459 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx); 460 461 /** 462 * snd_soc_info_volsw_range - single mixer info callback with range. 463 * @kcontrol: mixer control 464 * @uinfo: control element information 465 * 466 * Callback to provide information, within a range, about a single 467 * mixer control. 468 * 469 * returns 0 for success. 470 */ 471 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol, 472 struct snd_ctl_elem_info *uinfo) 473 { 474 struct soc_mixer_control *mc = 475 (struct soc_mixer_control *)kcontrol->private_value; 476 int platform_max; 477 int min = mc->min; 478 479 if (!mc->platform_max) 480 mc->platform_max = mc->max; 481 platform_max = mc->platform_max; 482 483 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 484 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; 485 uinfo->value.integer.min = 0; 486 uinfo->value.integer.max = platform_max - min; 487 488 return 0; 489 } 490 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range); 491 492 /** 493 * snd_soc_put_volsw_range - single mixer put value callback with range. 494 * @kcontrol: mixer control 495 * @ucontrol: control element information 496 * 497 * Callback to set the value, within a range, for a single mixer control. 498 * 499 * Returns 0 for success. 500 */ 501 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, 502 struct snd_ctl_elem_value *ucontrol) 503 { 504 struct soc_mixer_control *mc = 505 (struct soc_mixer_control *)kcontrol->private_value; 506 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 507 unsigned int reg = mc->reg; 508 unsigned int rreg = mc->rreg; 509 unsigned int shift = mc->shift; 510 int min = mc->min; 511 int max = mc->max; 512 unsigned int mask = (1 << fls(max)) - 1; 513 unsigned int invert = mc->invert; 514 unsigned int val, val_mask; 515 int ret; 516 517 if (invert) 518 val = (max - ucontrol->value.integer.value[0]) & mask; 519 else 520 val = ((ucontrol->value.integer.value[0] + min) & mask); 521 val_mask = mask << shift; 522 val = val << shift; 523 524 ret = snd_soc_component_update_bits(component, reg, val_mask, val); 525 if (ret < 0) 526 return ret; 527 528 if (snd_soc_volsw_is_stereo(mc)) { 529 if (invert) 530 val = (max - ucontrol->value.integer.value[1]) & mask; 531 else 532 val = ((ucontrol->value.integer.value[1] + min) & mask); 533 val_mask = mask << shift; 534 val = val << shift; 535 536 ret = snd_soc_component_update_bits(component, rreg, val_mask, 537 val); 538 } 539 540 return ret; 541 } 542 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range); 543 544 /** 545 * snd_soc_get_volsw_range - single mixer get callback with range 546 * @kcontrol: mixer control 547 * @ucontrol: control element information 548 * 549 * Callback to get the value, within a range, of a single mixer control. 550 * 551 * Returns 0 for success. 552 */ 553 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol, 554 struct snd_ctl_elem_value *ucontrol) 555 { 556 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 557 struct soc_mixer_control *mc = 558 (struct soc_mixer_control *)kcontrol->private_value; 559 unsigned int reg = mc->reg; 560 unsigned int rreg = mc->rreg; 561 unsigned int shift = mc->shift; 562 int min = mc->min; 563 int max = mc->max; 564 unsigned int mask = (1 << fls(max)) - 1; 565 unsigned int invert = mc->invert; 566 unsigned int val; 567 568 val = snd_soc_component_read(component, reg); 569 ucontrol->value.integer.value[0] = (val >> shift) & mask; 570 if (invert) 571 ucontrol->value.integer.value[0] = 572 max - ucontrol->value.integer.value[0]; 573 else 574 ucontrol->value.integer.value[0] = 575 ucontrol->value.integer.value[0] - min; 576 577 if (snd_soc_volsw_is_stereo(mc)) { 578 val = snd_soc_component_read(component, rreg); 579 ucontrol->value.integer.value[1] = (val >> shift) & mask; 580 if (invert) 581 ucontrol->value.integer.value[1] = 582 max - ucontrol->value.integer.value[1]; 583 else 584 ucontrol->value.integer.value[1] = 585 ucontrol->value.integer.value[1] - min; 586 } 587 588 return 0; 589 } 590 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range); 591 592 /** 593 * snd_soc_limit_volume - Set new limit to an existing volume control. 594 * 595 * @card: where to look for the control 596 * @name: Name of the control 597 * @max: new maximum limit 598 * 599 * Return 0 for success, else error. 600 */ 601 int snd_soc_limit_volume(struct snd_soc_card *card, 602 const char *name, int max) 603 { 604 struct snd_kcontrol *kctl; 605 int ret = -EINVAL; 606 607 /* Sanity check for name and max */ 608 if (unlikely(!name || max <= 0)) 609 return -EINVAL; 610 611 kctl = snd_soc_card_get_kcontrol(card, name); 612 if (kctl) { 613 struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value; 614 if (max <= mc->max) { 615 mc->platform_max = max; 616 ret = 0; 617 } 618 } 619 return ret; 620 } 621 EXPORT_SYMBOL_GPL(snd_soc_limit_volume); 622 623 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, 624 struct snd_ctl_elem_info *uinfo) 625 { 626 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 627 struct soc_bytes *params = (void *)kcontrol->private_value; 628 629 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; 630 uinfo->count = params->num_regs * component->val_bytes; 631 632 return 0; 633 } 634 EXPORT_SYMBOL_GPL(snd_soc_bytes_info); 635 636 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, 637 struct snd_ctl_elem_value *ucontrol) 638 { 639 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 640 struct soc_bytes *params = (void *)kcontrol->private_value; 641 int ret; 642 643 if (component->regmap) 644 ret = regmap_raw_read(component->regmap, params->base, 645 ucontrol->value.bytes.data, 646 params->num_regs * component->val_bytes); 647 else 648 ret = -EINVAL; 649 650 /* Hide any masked bytes to ensure consistent data reporting */ 651 if (ret == 0 && params->mask) { 652 switch (component->val_bytes) { 653 case 1: 654 ucontrol->value.bytes.data[0] &= ~params->mask; 655 break; 656 case 2: 657 ((u16 *)(&ucontrol->value.bytes.data))[0] 658 &= cpu_to_be16(~params->mask); 659 break; 660 case 4: 661 ((u32 *)(&ucontrol->value.bytes.data))[0] 662 &= cpu_to_be32(~params->mask); 663 break; 664 default: 665 return -EINVAL; 666 } 667 } 668 669 return ret; 670 } 671 EXPORT_SYMBOL_GPL(snd_soc_bytes_get); 672 673 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, 674 struct snd_ctl_elem_value *ucontrol) 675 { 676 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 677 struct soc_bytes *params = (void *)kcontrol->private_value; 678 int ret, len; 679 unsigned int val, mask; 680 void *data; 681 682 if (!component->regmap || !params->num_regs) 683 return -EINVAL; 684 685 len = params->num_regs * component->val_bytes; 686 687 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA); 688 if (!data) 689 return -ENOMEM; 690 691 /* 692 * If we've got a mask then we need to preserve the register 693 * bits. We shouldn't modify the incoming data so take a 694 * copy. 695 */ 696 if (params->mask) { 697 ret = regmap_read(component->regmap, params->base, &val); 698 if (ret != 0) 699 goto out; 700 701 val &= params->mask; 702 703 switch (component->val_bytes) { 704 case 1: 705 ((u8 *)data)[0] &= ~params->mask; 706 ((u8 *)data)[0] |= val; 707 break; 708 case 2: 709 mask = ~params->mask; 710 ret = regmap_parse_val(component->regmap, 711 &mask, &mask); 712 if (ret != 0) 713 goto out; 714 715 ((u16 *)data)[0] &= mask; 716 717 ret = regmap_parse_val(component->regmap, 718 &val, &val); 719 if (ret != 0) 720 goto out; 721 722 ((u16 *)data)[0] |= val; 723 break; 724 case 4: 725 mask = ~params->mask; 726 ret = regmap_parse_val(component->regmap, 727 &mask, &mask); 728 if (ret != 0) 729 goto out; 730 731 ((u32 *)data)[0] &= mask; 732 733 ret = regmap_parse_val(component->regmap, 734 &val, &val); 735 if (ret != 0) 736 goto out; 737 738 ((u32 *)data)[0] |= val; 739 break; 740 default: 741 ret = -EINVAL; 742 goto out; 743 } 744 } 745 746 ret = regmap_raw_write(component->regmap, params->base, 747 data, len); 748 749 out: 750 kfree(data); 751 752 return ret; 753 } 754 EXPORT_SYMBOL_GPL(snd_soc_bytes_put); 755 756 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol, 757 struct snd_ctl_elem_info *ucontrol) 758 { 759 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 760 761 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES; 762 ucontrol->count = params->max; 763 764 return 0; 765 } 766 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext); 767 768 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag, 769 unsigned int size, unsigned int __user *tlv) 770 { 771 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 772 unsigned int count = size < params->max ? size : params->max; 773 int ret = -ENXIO; 774 775 switch (op_flag) { 776 case SNDRV_CTL_TLV_OP_READ: 777 if (params->get) 778 ret = params->get(kcontrol, tlv, count); 779 break; 780 case SNDRV_CTL_TLV_OP_WRITE: 781 if (params->put) 782 ret = params->put(kcontrol, tlv, count); 783 break; 784 } 785 return ret; 786 } 787 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback); 788 789 /** 790 * snd_soc_info_xr_sx - signed multi register info callback 791 * @kcontrol: mreg control 792 * @uinfo: control element information 793 * 794 * Callback to provide information of a control that can 795 * span multiple codec registers which together 796 * forms a single signed value in a MSB/LSB manner. 797 * 798 * Returns 0 for success. 799 */ 800 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, 801 struct snd_ctl_elem_info *uinfo) 802 { 803 struct soc_mreg_control *mc = 804 (struct soc_mreg_control *)kcontrol->private_value; 805 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 806 uinfo->count = 1; 807 uinfo->value.integer.min = mc->min; 808 uinfo->value.integer.max = mc->max; 809 810 return 0; 811 } 812 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx); 813 814 /** 815 * snd_soc_get_xr_sx - signed multi register get callback 816 * @kcontrol: mreg control 817 * @ucontrol: control element information 818 * 819 * Callback to get the value of a control that can span 820 * multiple codec registers which together forms a single 821 * signed value in a MSB/LSB manner. The control supports 822 * specifying total no of bits used to allow for bitfields 823 * across the multiple codec registers. 824 * 825 * Returns 0 for success. 826 */ 827 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, 828 struct snd_ctl_elem_value *ucontrol) 829 { 830 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 831 struct soc_mreg_control *mc = 832 (struct soc_mreg_control *)kcontrol->private_value; 833 unsigned int regbase = mc->regbase; 834 unsigned int regcount = mc->regcount; 835 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; 836 unsigned int regwmask = (1UL<<regwshift)-1; 837 unsigned int invert = mc->invert; 838 unsigned long mask = (1UL<<mc->nbits)-1; 839 long min = mc->min; 840 long max = mc->max; 841 long val = 0; 842 unsigned int i; 843 844 for (i = 0; i < regcount; i++) { 845 unsigned int regval = snd_soc_component_read(component, regbase+i); 846 val |= (regval & regwmask) << (regwshift*(regcount-i-1)); 847 } 848 val &= mask; 849 if (min < 0 && val > max) 850 val |= ~mask; 851 if (invert) 852 val = max - val; 853 ucontrol->value.integer.value[0] = val; 854 855 return 0; 856 } 857 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx); 858 859 /** 860 * snd_soc_put_xr_sx - signed multi register get callback 861 * @kcontrol: mreg control 862 * @ucontrol: control element information 863 * 864 * Callback to set the value of a control that can span 865 * multiple codec registers which together forms a single 866 * signed value in a MSB/LSB manner. The control supports 867 * specifying total no of bits used to allow for bitfields 868 * across the multiple codec registers. 869 * 870 * Returns 0 for success. 871 */ 872 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, 873 struct snd_ctl_elem_value *ucontrol) 874 { 875 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 876 struct soc_mreg_control *mc = 877 (struct soc_mreg_control *)kcontrol->private_value; 878 unsigned int regbase = mc->regbase; 879 unsigned int regcount = mc->regcount; 880 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; 881 unsigned int regwmask = (1UL<<regwshift)-1; 882 unsigned int invert = mc->invert; 883 unsigned long mask = (1UL<<mc->nbits)-1; 884 long max = mc->max; 885 long val = ucontrol->value.integer.value[0]; 886 unsigned int i; 887 888 if (val < mc->min || val > mc->max) 889 return -EINVAL; 890 if (invert) 891 val = max - val; 892 val &= mask; 893 for (i = 0; i < regcount; i++) { 894 unsigned int regval = (val >> (regwshift*(regcount-i-1))) & regwmask; 895 unsigned int regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; 896 int err = snd_soc_component_update_bits(component, regbase+i, 897 regmask, regval); 898 if (err < 0) 899 return err; 900 } 901 902 return 0; 903 } 904 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx); 905 906 /** 907 * snd_soc_get_strobe - strobe get callback 908 * @kcontrol: mixer control 909 * @ucontrol: control element information 910 * 911 * Callback get the value of a strobe mixer control. 912 * 913 * Returns 0 for success. 914 */ 915 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, 916 struct snd_ctl_elem_value *ucontrol) 917 { 918 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 919 struct soc_mixer_control *mc = 920 (struct soc_mixer_control *)kcontrol->private_value; 921 unsigned int reg = mc->reg; 922 unsigned int shift = mc->shift; 923 unsigned int mask = 1 << shift; 924 unsigned int invert = mc->invert != 0; 925 unsigned int val; 926 927 val = snd_soc_component_read(component, reg); 928 val &= mask; 929 930 if (shift != 0 && val != 0) 931 val = val >> shift; 932 ucontrol->value.enumerated.item[0] = val ^ invert; 933 934 return 0; 935 } 936 EXPORT_SYMBOL_GPL(snd_soc_get_strobe); 937 938 /** 939 * snd_soc_put_strobe - strobe put callback 940 * @kcontrol: mixer control 941 * @ucontrol: control element information 942 * 943 * Callback strobe a register bit to high then low (or the inverse) 944 * in one pass of a single mixer enum control. 945 * 946 * Returns 1 for success. 947 */ 948 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, 949 struct snd_ctl_elem_value *ucontrol) 950 { 951 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 952 struct soc_mixer_control *mc = 953 (struct soc_mixer_control *)kcontrol->private_value; 954 unsigned int reg = mc->reg; 955 unsigned int shift = mc->shift; 956 unsigned int mask = 1 << shift; 957 unsigned int invert = mc->invert != 0; 958 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0; 959 unsigned int val1 = (strobe ^ invert) ? mask : 0; 960 unsigned int val2 = (strobe ^ invert) ? 0 : mask; 961 int err; 962 963 err = snd_soc_component_update_bits(component, reg, mask, val1); 964 if (err < 0) 965 return err; 966 967 return snd_soc_component_update_bits(component, reg, mask, val2); 968 } 969 EXPORT_SYMBOL_GPL(snd_soc_put_strobe); 970