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 if (ucontrol->value.integer.value[0] < 0) 320 return -EINVAL; 321 val = ucontrol->value.integer.value[0]; 322 if (mc->platform_max && ((int)val + min) > mc->platform_max) 323 return -EINVAL; 324 if (val > max - min) 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 if (ucontrol->value.integer.value[1] < 0) 333 return -EINVAL; 334 val2 = ucontrol->value.integer.value[1]; 335 if (mc->platform_max && ((int)val2 + min) > mc->platform_max) 336 return -EINVAL; 337 if (val2 > max - min) 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 int ret; 431 unsigned int val, val_mask; 432 433 if (ucontrol->value.integer.value[0] < 0) 434 return -EINVAL; 435 val = ucontrol->value.integer.value[0]; 436 if (mc->platform_max && val > mc->platform_max) 437 return -EINVAL; 438 if (val > max) 439 return -EINVAL; 440 val_mask = mask << shift; 441 val = (val + min) & mask; 442 val = val << shift; 443 444 err = snd_soc_component_update_bits(component, reg, val_mask, val); 445 if (err < 0) 446 return err; 447 ret = err; 448 449 if (snd_soc_volsw_is_stereo(mc)) { 450 unsigned int val2; 451 452 val_mask = mask << rshift; 453 val2 = (ucontrol->value.integer.value[1] + min) & mask; 454 455 if (mc->platform_max && val2 > mc->platform_max) 456 return -EINVAL; 457 if (val2 > max) 458 return -EINVAL; 459 460 val2 = val2 << rshift; 461 462 err = snd_soc_component_update_bits(component, reg2, val_mask, 463 val2); 464 465 /* Don't discard any error code or drop change flag */ 466 if (ret == 0 || err < 0) { 467 ret = err; 468 } 469 } 470 return ret; 471 } 472 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx); 473 474 /** 475 * snd_soc_info_volsw_range - single mixer info callback with range. 476 * @kcontrol: mixer control 477 * @uinfo: control element information 478 * 479 * Callback to provide information, within a range, about a single 480 * mixer control. 481 * 482 * returns 0 for success. 483 */ 484 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol, 485 struct snd_ctl_elem_info *uinfo) 486 { 487 struct soc_mixer_control *mc = 488 (struct soc_mixer_control *)kcontrol->private_value; 489 int platform_max; 490 int min = mc->min; 491 492 if (!mc->platform_max) 493 mc->platform_max = mc->max; 494 platform_max = mc->platform_max; 495 496 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 497 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; 498 uinfo->value.integer.min = 0; 499 uinfo->value.integer.max = platform_max - min; 500 501 return 0; 502 } 503 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range); 504 505 /** 506 * snd_soc_put_volsw_range - single mixer put value callback with range. 507 * @kcontrol: mixer control 508 * @ucontrol: control element information 509 * 510 * Callback to set the value, within a range, for a single mixer control. 511 * 512 * Returns 0 for success. 513 */ 514 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, 515 struct snd_ctl_elem_value *ucontrol) 516 { 517 struct soc_mixer_control *mc = 518 (struct soc_mixer_control *)kcontrol->private_value; 519 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 520 unsigned int reg = mc->reg; 521 unsigned int rreg = mc->rreg; 522 unsigned int shift = mc->shift; 523 int min = mc->min; 524 int max = mc->max; 525 unsigned int mask = (1 << fls(max)) - 1; 526 unsigned int invert = mc->invert; 527 unsigned int val, val_mask; 528 int err, ret, tmp; 529 530 tmp = ucontrol->value.integer.value[0]; 531 if (tmp < 0) 532 return -EINVAL; 533 if (mc->platform_max && tmp > mc->platform_max) 534 return -EINVAL; 535 if (tmp > mc->max - mc->min + 1) 536 return -EINVAL; 537 538 if (invert) 539 val = (max - ucontrol->value.integer.value[0]) & mask; 540 else 541 val = ((ucontrol->value.integer.value[0] + min) & mask); 542 val_mask = mask << shift; 543 val = val << shift; 544 545 err = snd_soc_component_update_bits(component, reg, val_mask, val); 546 if (err < 0) 547 return err; 548 ret = err; 549 550 if (snd_soc_volsw_is_stereo(mc)) { 551 tmp = ucontrol->value.integer.value[1]; 552 if (tmp < 0) 553 return -EINVAL; 554 if (mc->platform_max && tmp > mc->platform_max) 555 return -EINVAL; 556 if (tmp > mc->max - mc->min + 1) 557 return -EINVAL; 558 559 if (invert) 560 val = (max - ucontrol->value.integer.value[1]) & mask; 561 else 562 val = ((ucontrol->value.integer.value[1] + min) & mask); 563 val_mask = mask << shift; 564 val = val << shift; 565 566 err = snd_soc_component_update_bits(component, rreg, val_mask, 567 val); 568 /* Don't discard any error code or drop change flag */ 569 if (ret == 0 || err < 0) { 570 ret = err; 571 } 572 } 573 574 return ret; 575 } 576 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range); 577 578 /** 579 * snd_soc_get_volsw_range - single mixer get callback with range 580 * @kcontrol: mixer control 581 * @ucontrol: control element information 582 * 583 * Callback to get the value, within a range, of a single mixer control. 584 * 585 * Returns 0 for success. 586 */ 587 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol, 588 struct snd_ctl_elem_value *ucontrol) 589 { 590 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 591 struct soc_mixer_control *mc = 592 (struct soc_mixer_control *)kcontrol->private_value; 593 unsigned int reg = mc->reg; 594 unsigned int rreg = mc->rreg; 595 unsigned int shift = mc->shift; 596 int min = mc->min; 597 int max = mc->max; 598 unsigned int mask = (1 << fls(max)) - 1; 599 unsigned int invert = mc->invert; 600 unsigned int val; 601 602 val = snd_soc_component_read(component, reg); 603 ucontrol->value.integer.value[0] = (val >> shift) & mask; 604 if (invert) 605 ucontrol->value.integer.value[0] = 606 max - ucontrol->value.integer.value[0]; 607 else 608 ucontrol->value.integer.value[0] = 609 ucontrol->value.integer.value[0] - min; 610 611 if (snd_soc_volsw_is_stereo(mc)) { 612 val = snd_soc_component_read(component, rreg); 613 ucontrol->value.integer.value[1] = (val >> shift) & mask; 614 if (invert) 615 ucontrol->value.integer.value[1] = 616 max - ucontrol->value.integer.value[1]; 617 else 618 ucontrol->value.integer.value[1] = 619 ucontrol->value.integer.value[1] - min; 620 } 621 622 return 0; 623 } 624 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range); 625 626 /** 627 * snd_soc_limit_volume - Set new limit to an existing volume control. 628 * 629 * @card: where to look for the control 630 * @name: Name of the control 631 * @max: new maximum limit 632 * 633 * Return 0 for success, else error. 634 */ 635 int snd_soc_limit_volume(struct snd_soc_card *card, 636 const char *name, int max) 637 { 638 struct snd_kcontrol *kctl; 639 int ret = -EINVAL; 640 641 /* Sanity check for name and max */ 642 if (unlikely(!name || max <= 0)) 643 return -EINVAL; 644 645 kctl = snd_soc_card_get_kcontrol(card, name); 646 if (kctl) { 647 struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value; 648 if (max <= mc->max) { 649 mc->platform_max = max; 650 ret = 0; 651 } 652 } 653 return ret; 654 } 655 EXPORT_SYMBOL_GPL(snd_soc_limit_volume); 656 657 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, 658 struct snd_ctl_elem_info *uinfo) 659 { 660 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 661 struct soc_bytes *params = (void *)kcontrol->private_value; 662 663 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; 664 uinfo->count = params->num_regs * component->val_bytes; 665 666 return 0; 667 } 668 EXPORT_SYMBOL_GPL(snd_soc_bytes_info); 669 670 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, 671 struct snd_ctl_elem_value *ucontrol) 672 { 673 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 674 struct soc_bytes *params = (void *)kcontrol->private_value; 675 int ret; 676 677 if (component->regmap) 678 ret = regmap_raw_read(component->regmap, params->base, 679 ucontrol->value.bytes.data, 680 params->num_regs * component->val_bytes); 681 else 682 ret = -EINVAL; 683 684 /* Hide any masked bytes to ensure consistent data reporting */ 685 if (ret == 0 && params->mask) { 686 switch (component->val_bytes) { 687 case 1: 688 ucontrol->value.bytes.data[0] &= ~params->mask; 689 break; 690 case 2: 691 ((u16 *)(&ucontrol->value.bytes.data))[0] 692 &= cpu_to_be16(~params->mask); 693 break; 694 case 4: 695 ((u32 *)(&ucontrol->value.bytes.data))[0] 696 &= cpu_to_be32(~params->mask); 697 break; 698 default: 699 return -EINVAL; 700 } 701 } 702 703 return ret; 704 } 705 EXPORT_SYMBOL_GPL(snd_soc_bytes_get); 706 707 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, 708 struct snd_ctl_elem_value *ucontrol) 709 { 710 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 711 struct soc_bytes *params = (void *)kcontrol->private_value; 712 int ret, len; 713 unsigned int val, mask; 714 void *data; 715 716 if (!component->regmap || !params->num_regs) 717 return -EINVAL; 718 719 len = params->num_regs * component->val_bytes; 720 721 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA); 722 if (!data) 723 return -ENOMEM; 724 725 /* 726 * If we've got a mask then we need to preserve the register 727 * bits. We shouldn't modify the incoming data so take a 728 * copy. 729 */ 730 if (params->mask) { 731 ret = regmap_read(component->regmap, params->base, &val); 732 if (ret != 0) 733 goto out; 734 735 val &= params->mask; 736 737 switch (component->val_bytes) { 738 case 1: 739 ((u8 *)data)[0] &= ~params->mask; 740 ((u8 *)data)[0] |= val; 741 break; 742 case 2: 743 mask = ~params->mask; 744 ret = regmap_parse_val(component->regmap, 745 &mask, &mask); 746 if (ret != 0) 747 goto out; 748 749 ((u16 *)data)[0] &= mask; 750 751 ret = regmap_parse_val(component->regmap, 752 &val, &val); 753 if (ret != 0) 754 goto out; 755 756 ((u16 *)data)[0] |= val; 757 break; 758 case 4: 759 mask = ~params->mask; 760 ret = regmap_parse_val(component->regmap, 761 &mask, &mask); 762 if (ret != 0) 763 goto out; 764 765 ((u32 *)data)[0] &= mask; 766 767 ret = regmap_parse_val(component->regmap, 768 &val, &val); 769 if (ret != 0) 770 goto out; 771 772 ((u32 *)data)[0] |= val; 773 break; 774 default: 775 ret = -EINVAL; 776 goto out; 777 } 778 } 779 780 ret = regmap_raw_write(component->regmap, params->base, 781 data, len); 782 783 out: 784 kfree(data); 785 786 return ret; 787 } 788 EXPORT_SYMBOL_GPL(snd_soc_bytes_put); 789 790 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol, 791 struct snd_ctl_elem_info *ucontrol) 792 { 793 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 794 795 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES; 796 ucontrol->count = params->max; 797 798 return 0; 799 } 800 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext); 801 802 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag, 803 unsigned int size, unsigned int __user *tlv) 804 { 805 struct soc_bytes_ext *params = (void *)kcontrol->private_value; 806 unsigned int count = size < params->max ? size : params->max; 807 int ret = -ENXIO; 808 809 switch (op_flag) { 810 case SNDRV_CTL_TLV_OP_READ: 811 if (params->get) 812 ret = params->get(kcontrol, tlv, count); 813 break; 814 case SNDRV_CTL_TLV_OP_WRITE: 815 if (params->put) 816 ret = params->put(kcontrol, tlv, count); 817 break; 818 } 819 return ret; 820 } 821 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback); 822 823 /** 824 * snd_soc_info_xr_sx - signed multi register info callback 825 * @kcontrol: mreg control 826 * @uinfo: control element information 827 * 828 * Callback to provide information of a control that can 829 * span multiple codec registers which together 830 * forms a single signed value in a MSB/LSB manner. 831 * 832 * Returns 0 for success. 833 */ 834 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, 835 struct snd_ctl_elem_info *uinfo) 836 { 837 struct soc_mreg_control *mc = 838 (struct soc_mreg_control *)kcontrol->private_value; 839 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 840 uinfo->count = 1; 841 uinfo->value.integer.min = mc->min; 842 uinfo->value.integer.max = mc->max; 843 844 return 0; 845 } 846 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx); 847 848 /** 849 * snd_soc_get_xr_sx - signed multi register get callback 850 * @kcontrol: mreg control 851 * @ucontrol: control element information 852 * 853 * Callback to get the value of a control that can span 854 * multiple codec registers which together forms a single 855 * signed value in a MSB/LSB manner. The control supports 856 * specifying total no of bits used to allow for bitfields 857 * across the multiple codec registers. 858 * 859 * Returns 0 for success. 860 */ 861 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, 862 struct snd_ctl_elem_value *ucontrol) 863 { 864 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 865 struct soc_mreg_control *mc = 866 (struct soc_mreg_control *)kcontrol->private_value; 867 unsigned int regbase = mc->regbase; 868 unsigned int regcount = mc->regcount; 869 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; 870 unsigned int regwmask = (1UL<<regwshift)-1; 871 unsigned int invert = mc->invert; 872 unsigned long mask = (1UL<<mc->nbits)-1; 873 long min = mc->min; 874 long max = mc->max; 875 long val = 0; 876 unsigned int i; 877 878 for (i = 0; i < regcount; i++) { 879 unsigned int regval = snd_soc_component_read(component, regbase+i); 880 val |= (regval & regwmask) << (regwshift*(regcount-i-1)); 881 } 882 val &= mask; 883 if (min < 0 && val > max) 884 val |= ~mask; 885 if (invert) 886 val = max - val; 887 ucontrol->value.integer.value[0] = val; 888 889 return 0; 890 } 891 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx); 892 893 /** 894 * snd_soc_put_xr_sx - signed multi register get callback 895 * @kcontrol: mreg control 896 * @ucontrol: control element information 897 * 898 * Callback to set the value of a control that can span 899 * multiple codec registers which together forms a single 900 * signed value in a MSB/LSB manner. The control supports 901 * specifying total no of bits used to allow for bitfields 902 * across the multiple codec registers. 903 * 904 * Returns 0 for success. 905 */ 906 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, 907 struct snd_ctl_elem_value *ucontrol) 908 { 909 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 910 struct soc_mreg_control *mc = 911 (struct soc_mreg_control *)kcontrol->private_value; 912 unsigned int regbase = mc->regbase; 913 unsigned int regcount = mc->regcount; 914 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; 915 unsigned int regwmask = (1UL<<regwshift)-1; 916 unsigned int invert = mc->invert; 917 unsigned long mask = (1UL<<mc->nbits)-1; 918 long max = mc->max; 919 long val = ucontrol->value.integer.value[0]; 920 int ret = 0; 921 unsigned int i; 922 923 if (val < mc->min || val > mc->max) 924 return -EINVAL; 925 if (invert) 926 val = max - val; 927 val &= mask; 928 for (i = 0; i < regcount; i++) { 929 unsigned int regval = (val >> (regwshift*(regcount-i-1))) & regwmask; 930 unsigned int regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; 931 int err = snd_soc_component_update_bits(component, regbase+i, 932 regmask, regval); 933 if (err < 0) 934 return err; 935 if (err > 0) 936 ret = err; 937 } 938 939 return ret; 940 } 941 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx); 942 943 /** 944 * snd_soc_get_strobe - strobe get callback 945 * @kcontrol: mixer control 946 * @ucontrol: control element information 947 * 948 * Callback get the value of a strobe mixer control. 949 * 950 * Returns 0 for success. 951 */ 952 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, 953 struct snd_ctl_elem_value *ucontrol) 954 { 955 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 956 struct soc_mixer_control *mc = 957 (struct soc_mixer_control *)kcontrol->private_value; 958 unsigned int reg = mc->reg; 959 unsigned int shift = mc->shift; 960 unsigned int mask = 1 << shift; 961 unsigned int invert = mc->invert != 0; 962 unsigned int val; 963 964 val = snd_soc_component_read(component, reg); 965 val &= mask; 966 967 if (shift != 0 && val != 0) 968 val = val >> shift; 969 ucontrol->value.enumerated.item[0] = val ^ invert; 970 971 return 0; 972 } 973 EXPORT_SYMBOL_GPL(snd_soc_get_strobe); 974 975 /** 976 * snd_soc_put_strobe - strobe put callback 977 * @kcontrol: mixer control 978 * @ucontrol: control element information 979 * 980 * Callback strobe a register bit to high then low (or the inverse) 981 * in one pass of a single mixer enum control. 982 * 983 * Returns 1 for success. 984 */ 985 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, 986 struct snd_ctl_elem_value *ucontrol) 987 { 988 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); 989 struct soc_mixer_control *mc = 990 (struct soc_mixer_control *)kcontrol->private_value; 991 unsigned int reg = mc->reg; 992 unsigned int shift = mc->shift; 993 unsigned int mask = 1 << shift; 994 unsigned int invert = mc->invert != 0; 995 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0; 996 unsigned int val1 = (strobe ^ invert) ? mask : 0; 997 unsigned int val2 = (strobe ^ invert) ? 0 : mask; 998 int err; 999 1000 err = snd_soc_component_update_bits(component, reg, mask, val1); 1001 if (err < 0) 1002 return err; 1003 1004 return snd_soc_component_update_bits(component, reg, mask, val2); 1005 } 1006 EXPORT_SYMBOL_GPL(snd_soc_put_strobe); 1007