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 err, 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 err = snd_soc_component_update_bits(component, reg, val_mask, val); 525 if (err < 0) 526 return err; 527 ret = err; 528 529 if (snd_soc_volsw_is_stereo(mc)) { 530 if (invert) 531 val = (max - ucontrol->value.integer.value[1]) & mask; 532 else 533 val = ((ucontrol->value.integer.value[1] + min) & mask); 534 val_mask = mask << shift; 535 val = val << shift; 536 537 err = snd_soc_component_update_bits(component, rreg, val_mask, 538 val); 539 /* Don't discard any error code or drop change flag */ 540 if (ret == 0 || err < 0) { 541 ret = err; 542 } 543 } 544 545 return ret; 546 } 547 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range); 548 549 /** 550 * snd_soc_get_volsw_range - single mixer get callback with range 551 * @kcontrol: mixer control 552 * @ucontrol: control element information 553 * 554 * Callback to get the value, within a range, of a single mixer control. 555 * 556 * Returns 0 for success. 557 */ 558 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol, 559 struct snd_ctl_elem_value *ucontrol) 560 { 561 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 562 struct soc_mixer_control *mc = 563 (struct soc_mixer_control *)kcontrol->private_value; 564 unsigned int reg = mc->reg; 565 unsigned int rreg = mc->rreg; 566 unsigned int shift = mc->shift; 567 int min = mc->min; 568 int max = mc->max; 569 unsigned int mask = (1 << fls(max)) - 1; 570 unsigned int invert = mc->invert; 571 unsigned int val; 572 573 val = snd_soc_component_read(component, reg); 574 ucontrol->value.integer.value[0] = (val >> shift) & mask; 575 if (invert) 576 ucontrol->value.integer.value[0] = 577 max - ucontrol->value.integer.value[0]; 578 else 579 ucontrol->value.integer.value[0] = 580 ucontrol->value.integer.value[0] - min; 581 582 if (snd_soc_volsw_is_stereo(mc)) { 583 val = snd_soc_component_read(component, rreg); 584 ucontrol->value.integer.value[1] = (val >> shift) & mask; 585 if (invert) 586 ucontrol->value.integer.value[1] = 587 max - ucontrol->value.integer.value[1]; 588 else 589 ucontrol->value.integer.value[1] = 590 ucontrol->value.integer.value[1] - min; 591 } 592 593 return 0; 594 } 595 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range); 596 597 /** 598 * snd_soc_limit_volume - Set new limit to an existing volume control. 599 * 600 * @card: where to look for the control 601 * @name: Name of the control 602 * @max: new maximum limit 603 * 604 * Return 0 for success, else error. 605 */ 606 int snd_soc_limit_volume(struct snd_soc_card *card, 607 const char *name, int max) 608 { 609 struct snd_kcontrol *kctl; 610 int ret = -EINVAL; 611 612 /* Sanity check for name and max */ 613 if (unlikely(!name || max <= 0)) 614 return -EINVAL; 615 616 kctl = snd_soc_card_get_kcontrol(card, name); 617 if (kctl) { 618 struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value; 619 if (max <= mc->max) { 620 mc->platform_max = max; 621 ret = 0; 622 } 623 } 624 return ret; 625 } 626 EXPORT_SYMBOL_GPL(snd_soc_limit_volume); 627 628 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, 629 struct snd_ctl_elem_info *uinfo) 630 { 631 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 632 struct soc_bytes *params = (void *)kcontrol->private_value; 633 634 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; 635 uinfo->count = params->num_regs * component->val_bytes; 636 637 return 0; 638 } 639 EXPORT_SYMBOL_GPL(snd_soc_bytes_info); 640 641 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, 642 struct snd_ctl_elem_value *ucontrol) 643 { 644 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 645 struct soc_bytes *params = (void *)kcontrol->private_value; 646 int ret; 647 648 if (component->regmap) 649 ret = regmap_raw_read(component->regmap, params->base, 650 ucontrol->value.bytes.data, 651 params->num_regs * component->val_bytes); 652 else 653 ret = -EINVAL; 654 655 /* Hide any masked bytes to ensure consistent data reporting */ 656 if (ret == 0 && params->mask) { 657 switch (component->val_bytes) { 658 case 1: 659 ucontrol->value.bytes.data[0] &= ~params->mask; 660 break; 661 case 2: 662 ((u16 *)(&ucontrol->value.bytes.data))[0] 663 &= cpu_to_be16(~params->mask); 664 break; 665 case 4: 666 ((u32 *)(&ucontrol->value.bytes.data))[0] 667 &= cpu_to_be32(~params->mask); 668 break; 669 default: 670 return -EINVAL; 671 } 672 } 673 674 return ret; 675 } 676 EXPORT_SYMBOL_GPL(snd_soc_bytes_get); 677 678 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, 679 struct snd_ctl_elem_value *ucontrol) 680 { 681 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 682 struct soc_bytes *params = (void *)kcontrol->private_value; 683 int ret, len; 684 unsigned int val, mask; 685 void *data; 686 687 if (!component->regmap || !params->num_regs) 688 return -EINVAL; 689 690 len = params->num_regs * component->val_bytes; 691 692 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA); 693 if (!data) 694 return -ENOMEM; 695 696 /* 697 * If we've got a mask then we need to preserve the register 698 * bits. We shouldn't modify the incoming data so take a 699 * copy. 700 */ 701 if (params->mask) { 702 ret = regmap_read(component->regmap, params->base, &val); 703 if (ret != 0) 704 goto out; 705 706 val &= params->mask; 707 708 switch (component->val_bytes) { 709 case 1: 710 ((u8 *)data)[0] &= ~params->mask; 711 ((u8 *)data)[0] |= val; 712 break; 713 case 2: 714 mask = ~params->mask; 715 ret = regmap_parse_val(component->regmap, 716 &mask, &mask); 717 if (ret != 0) 718 goto out; 719 720 ((u16 *)data)[0] &= mask; 721 722 ret = regmap_parse_val(component->regmap, 723 &val, &val); 724 if (ret != 0) 725 goto out; 726 727 ((u16 *)data)[0] |= val; 728 break; 729 case 4: 730 mask = ~params->mask; 731 ret = regmap_parse_val(component->regmap, 732 &mask, &mask); 733 if (ret != 0) 734 goto out; 735 736 ((u32 *)data)[0] &= mask; 737 738 ret = regmap_parse_val(component->regmap, 739 &val, &val); 740 if (ret != 0) 741 goto out; 742 743 ((u32 *)data)[0] |= val; 744 break; 745 default: 746 ret = -EINVAL; 747 goto out; 748 } 749 } 750 751 ret = regmap_raw_write(component->regmap, params->base, 752 data, len); 753 754 out: 755 kfree(data); 756 757 return ret; 758 } 759 EXPORT_SYMBOL_GPL(snd_soc_bytes_put); 760 761 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol, 762 struct snd_ctl_elem_info *ucontrol) 763 { 764 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 765 766 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES; 767 ucontrol->count = params->max; 768 769 return 0; 770 } 771 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext); 772 773 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag, 774 unsigned int size, unsigned int __user *tlv) 775 { 776 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 777 unsigned int count = size < params->max ? size : params->max; 778 int ret = -ENXIO; 779 780 switch (op_flag) { 781 case SNDRV_CTL_TLV_OP_READ: 782 if (params->get) 783 ret = params->get(kcontrol, tlv, count); 784 break; 785 case SNDRV_CTL_TLV_OP_WRITE: 786 if (params->put) 787 ret = params->put(kcontrol, tlv, count); 788 break; 789 } 790 return ret; 791 } 792 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback); 793 794 /** 795 * snd_soc_info_xr_sx - signed multi register info callback 796 * @kcontrol: mreg control 797 * @uinfo: control element information 798 * 799 * Callback to provide information of a control that can 800 * span multiple codec registers which together 801 * forms a single signed value in a MSB/LSB manner. 802 * 803 * Returns 0 for success. 804 */ 805 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, 806 struct snd_ctl_elem_info *uinfo) 807 { 808 struct soc_mreg_control *mc = 809 (struct soc_mreg_control *)kcontrol->private_value; 810 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 811 uinfo->count = 1; 812 uinfo->value.integer.min = mc->min; 813 uinfo->value.integer.max = mc->max; 814 815 return 0; 816 } 817 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx); 818 819 /** 820 * snd_soc_get_xr_sx - signed multi register get callback 821 * @kcontrol: mreg control 822 * @ucontrol: control element information 823 * 824 * Callback to get the value of a control that can span 825 * multiple codec registers which together forms a single 826 * signed value in a MSB/LSB manner. The control supports 827 * specifying total no of bits used to allow for bitfields 828 * across the multiple codec registers. 829 * 830 * Returns 0 for success. 831 */ 832 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, 833 struct snd_ctl_elem_value *ucontrol) 834 { 835 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 836 struct soc_mreg_control *mc = 837 (struct soc_mreg_control *)kcontrol->private_value; 838 unsigned int regbase = mc->regbase; 839 unsigned int regcount = mc->regcount; 840 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; 841 unsigned int regwmask = (1UL<<regwshift)-1; 842 unsigned int invert = mc->invert; 843 unsigned long mask = (1UL<<mc->nbits)-1; 844 long min = mc->min; 845 long max = mc->max; 846 long val = 0; 847 unsigned int i; 848 849 for (i = 0; i < regcount; i++) { 850 unsigned int regval = snd_soc_component_read(component, regbase+i); 851 val |= (regval & regwmask) << (regwshift*(regcount-i-1)); 852 } 853 val &= mask; 854 if (min < 0 && val > max) 855 val |= ~mask; 856 if (invert) 857 val = max - val; 858 ucontrol->value.integer.value[0] = val; 859 860 return 0; 861 } 862 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx); 863 864 /** 865 * snd_soc_put_xr_sx - signed multi register get callback 866 * @kcontrol: mreg control 867 * @ucontrol: control element information 868 * 869 * Callback to set the value of a control that can span 870 * multiple codec registers which together forms a single 871 * signed value in a MSB/LSB manner. The control supports 872 * specifying total no of bits used to allow for bitfields 873 * across the multiple codec registers. 874 * 875 * Returns 0 for success. 876 */ 877 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, 878 struct snd_ctl_elem_value *ucontrol) 879 { 880 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 881 struct soc_mreg_control *mc = 882 (struct soc_mreg_control *)kcontrol->private_value; 883 unsigned int regbase = mc->regbase; 884 unsigned int regcount = mc->regcount; 885 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; 886 unsigned int regwmask = (1UL<<regwshift)-1; 887 unsigned int invert = mc->invert; 888 unsigned long mask = (1UL<<mc->nbits)-1; 889 long max = mc->max; 890 long val = ucontrol->value.integer.value[0]; 891 unsigned int i; 892 893 if (val < mc->min || val > mc->max) 894 return -EINVAL; 895 if (invert) 896 val = max - val; 897 val &= mask; 898 for (i = 0; i < regcount; i++) { 899 unsigned int regval = (val >> (regwshift*(regcount-i-1))) & regwmask; 900 unsigned int regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; 901 int err = snd_soc_component_update_bits(component, regbase+i, 902 regmask, regval); 903 if (err < 0) 904 return err; 905 } 906 907 return 0; 908 } 909 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx); 910 911 /** 912 * snd_soc_get_strobe - strobe get callback 913 * @kcontrol: mixer control 914 * @ucontrol: control element information 915 * 916 * Callback get the value of a strobe mixer control. 917 * 918 * Returns 0 for success. 919 */ 920 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, 921 struct snd_ctl_elem_value *ucontrol) 922 { 923 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 924 struct soc_mixer_control *mc = 925 (struct soc_mixer_control *)kcontrol->private_value; 926 unsigned int reg = mc->reg; 927 unsigned int shift = mc->shift; 928 unsigned int mask = 1 << shift; 929 unsigned int invert = mc->invert != 0; 930 unsigned int val; 931 932 val = snd_soc_component_read(component, reg); 933 val &= mask; 934 935 if (shift != 0 && val != 0) 936 val = val >> shift; 937 ucontrol->value.enumerated.item[0] = val ^ invert; 938 939 return 0; 940 } 941 EXPORT_SYMBOL_GPL(snd_soc_get_strobe); 942 943 /** 944 * snd_soc_put_strobe - strobe put callback 945 * @kcontrol: mixer control 946 * @ucontrol: control element information 947 * 948 * Callback strobe a register bit to high then low (or the inverse) 949 * in one pass of a single mixer enum control. 950 * 951 * Returns 1 for success. 952 */ 953 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, 954 struct snd_ctl_elem_value *ucontrol) 955 { 956 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 957 struct soc_mixer_control *mc = 958 (struct soc_mixer_control *)kcontrol->private_value; 959 unsigned int reg = mc->reg; 960 unsigned int shift = mc->shift; 961 unsigned int mask = 1 << shift; 962 unsigned int invert = mc->invert != 0; 963 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0; 964 unsigned int val1 = (strobe ^ invert) ? mask : 0; 965 unsigned int val2 = (strobe ^ invert) ? 0 : mask; 966 int err; 967 968 err = snd_soc_component_update_bits(component, reg, mask, val1); 969 if (err < 0) 970 return err; 971 972 return snd_soc_component_update_bits(component, reg, mask, val2); 973 } 974 EXPORT_SYMBOL_GPL(snd_soc_put_strobe); 975