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