sound/soc/soc-ops.c

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