sound/oss/dmasound/tas3004.c

   1 /*
   2  * Driver for the i2c/i2s based TA3004 sound chip used
   3  * on some Apple hardware. Also known as "snapper".
   4  *
   5  * Tobias Sargeant <tobias.sargeant@bigpond.com>
   6  * Based upon tas3001c.c by Christopher C. Chimelis <chris@debian.org>:
   7  *
   8  * Input support by Renzo Davoli <renzo@cs.unibo.it>
   9  *
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/slab.h>
  14 #include <linux/proc_fs.h>
  15 #include <linux/ioport.h>
  16 #include <linux/sysctl.h>
  17 #include <linux/types.h>
  18 #include <linux/i2c.h>
  19 #include <linux/init.h>
  20 #include <linux/soundcard.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/workqueue.h>
  23
  24 #include <asm/uaccess.h>
  25 #include <asm/errno.h>
  26 #include <asm/io.h>
  27 #include <asm/prom.h>
  28
  29 #include "dmasound.h"
  30 #include "tas_common.h"
  31 #include "tas3004.h"
  32
  33 #include "tas_ioctl.h"
  34
  35 /* #define DEBUG_DRCE */
  36
  37 #define TAS3004_BIQUAD_FILTER_COUNT  7
  38 #define TAS3004_BIQUAD_CHANNEL_COUNT 2
  39
  40 #define VOL_DEFAULT     (100 * 4 / 5)
  41 #define INPUT_DEFAULT   (100 * 4 / 5)
  42 #define BASS_DEFAULT    (100 / 2)
  43 #define TREBLE_DEFAULT  (100 / 2)
  44
  45 struct tas3004_data_t {
  46         struct tas_data_t super;
  47         int device_id;
  48         int output_id;
  49         int speaker_id;
  50         struct tas_drce_t drce_state;
  51 };
  52
  53 #define MAKE_TIME(sec,usec) (((sec)<<12) + (50000+(usec/10)*(1<<12))/100000)
  54
  55 #define MAKE_RATIO(i,f) (((i)<<8) + ((500+(f)*(1<<8))/1000))
  56
  57
  58 static const union tas_biquad_t tas3004_eq_unity = {
  59         .buf             = { 0x100000, 0x000000, 0x000000, 0x000000, 0x000000 },
  60 };
  61
  62
  63 static const struct tas_drce_t tas3004_drce_min = {
  64         .enable         = 1,
  65         .above          = { .val = MAKE_RATIO(16,0), .expand = 0 },
  66         .below          = { .val = MAKE_RATIO(2,0), .expand = 0 },
  67         .threshold      = -0x59a0,
  68         .energy         = MAKE_TIME(0,  1700),
  69         .attack         = MAKE_TIME(0,  1700),
  70         .decay          = MAKE_TIME(0,  1700),
  71 };
  72
  73
  74 static const struct tas_drce_t tas3004_drce_max = {
  75         .enable         = 1,
  76         .above          = { .val = MAKE_RATIO(1,500), .expand = 1 },
  77         .below          = { .val = MAKE_RATIO(2,0), .expand = 1 },
  78         .threshold      = -0x0,
  79         .energy         = MAKE_TIME(2,400000),
  80         .attack         = MAKE_TIME(2,400000),
  81         .decay          = MAKE_TIME(2,400000),
  82 };
  83
  84
  85 static const unsigned short time_constants[]={
  86         MAKE_TIME(0,  1700),
  87         MAKE_TIME(0,  3500),
  88         MAKE_TIME(0,  6700),
  89         MAKE_TIME(0, 13000),
  90         MAKE_TIME(0, 26000),
  91         MAKE_TIME(0, 53000),
  92         MAKE_TIME(0,106000),
  93         MAKE_TIME(0,212000),
  94         MAKE_TIME(0,425000),
  95         MAKE_TIME(0,850000),
  96         MAKE_TIME(1,700000),
  97         MAKE_TIME(2,400000),
  98 };
  99
 100 static const unsigned short above_threshold_compression_ratio[]={
 101         MAKE_RATIO( 1, 70),
 102         MAKE_RATIO( 1,140),
 103         MAKE_RATIO( 1,230),
 104         MAKE_RATIO( 1,330),
 105         MAKE_RATIO( 1,450),
 106         MAKE_RATIO( 1,600),
 107         MAKE_RATIO( 1,780),
 108         MAKE_RATIO( 2,  0),
 109         MAKE_RATIO( 2,290),
 110         MAKE_RATIO( 2,670),
 111         MAKE_RATIO( 3,200),
 112         MAKE_RATIO( 4,  0),
 113         MAKE_RATIO( 5,330),
 114         MAKE_RATIO( 8,  0),
 115         MAKE_RATIO(16,  0),
 116 };
 117
 118 static const unsigned short above_threshold_expansion_ratio[]={
 119         MAKE_RATIO(1, 60),
 120         MAKE_RATIO(1,130),
 121         MAKE_RATIO(1,190),
 122         MAKE_RATIO(1,250),
 123         MAKE_RATIO(1,310),
 124         MAKE_RATIO(1,380),
 125         MAKE_RATIO(1,440),
 126         MAKE_RATIO(1,500)
 127 };
 128
 129 static const unsigned short below_threshold_compression_ratio[]={
 130         MAKE_RATIO(1, 70),
 131         MAKE_RATIO(1,140),
 132         MAKE_RATIO(1,230),
 133         MAKE_RATIO(1,330),
 134         MAKE_RATIO(1,450),
 135         MAKE_RATIO(1,600),
 136         MAKE_RATIO(1,780),
 137         MAKE_RATIO(2,  0)
 138 };
 139
 140 static const unsigned short below_threshold_expansion_ratio[]={
 141         MAKE_RATIO(1, 60),
 142         MAKE_RATIO(1,130),
 143         MAKE_RATIO(1,190),
 144         MAKE_RATIO(1,250),
 145         MAKE_RATIO(1,310),
 146         MAKE_RATIO(1,380),
 147         MAKE_RATIO(1,440),
 148         MAKE_RATIO(1,500),
 149         MAKE_RATIO(1,560),
 150         MAKE_RATIO(1,630),
 151         MAKE_RATIO(1,690),
 152         MAKE_RATIO(1,750),
 153         MAKE_RATIO(1,810),
 154         MAKE_RATIO(1,880),
 155         MAKE_RATIO(1,940),
 156         MAKE_RATIO(2,  0)
 157 };
 158
 159 static inline int
 160 search( unsigned short val,
 161         const unsigned short *arr,
 162         const int arrsize) {
 163         /*
 164          * This could be a binary search, but for small tables,
 165          * a linear search is likely to be faster
 166          */
 167
 168         int i;
 169
 170         for (i=0; i < arrsize; i++)
 171                 if (arr[i] >= val)
 172                         goto _1;
 173         return arrsize-1;
 174  _1:
 175         if (i == 0)
 176                 return 0;
 177         return (arr[i]-val < val-arr[i-1]) ? i : i-1;
 178 }
 179
 180 #define SEARCH(a, b) search(a, b, ARRAY_SIZE(b))
 181
 182 static inline int
 183 time_index(unsigned short time)
 184 {
 185         return SEARCH(time, time_constants);
 186 }
 187
 188
 189 static inline int
 190 above_threshold_compression_index(unsigned short ratio)
 191 {
 192         return SEARCH(ratio, above_threshold_compression_ratio);
 193 }
 194
 195
 196 static inline int
 197 above_threshold_expansion_index(unsigned short ratio)
 198 {
 199         return SEARCH(ratio, above_threshold_expansion_ratio);
 200 }
 201
 202
 203 static inline int
 204 below_threshold_compression_index(unsigned short ratio)
 205 {
 206         return SEARCH(ratio, below_threshold_compression_ratio);
 207 }
 208
 209
 210 static inline int
 211 below_threshold_expansion_index(unsigned short ratio)
 212 {
 213         return SEARCH(ratio, below_threshold_expansion_ratio);
 214 }
 215
 216 static inline unsigned char db_to_regval(short db) {
 217         int r=0;
 218
 219         r=(db+0x59a0) / 0x60;
 220
 221         if (r < 0x91) return 0x91;
 222         if (r > 0xef) return 0xef;
 223         return r;
 224 }
 225
 226 static inline short quantize_db(short db)
 227 {
 228         return db_to_regval(db) * 0x60 - 0x59a0;
 229 }
 230
 231 static inline int
 232 register_width(enum tas3004_reg_t r)
 233 {
 234         switch(r) {
 235         case TAS3004_REG_MCR:
 236         case TAS3004_REG_TREBLE:
 237         case TAS3004_REG_BASS:
 238         case TAS3004_REG_ANALOG_CTRL:
 239         case TAS3004_REG_TEST1:
 240         case TAS3004_REG_TEST2:
 241         case TAS3004_REG_MCR2:
 242                 return 1;
 243
 244         case TAS3004_REG_LEFT_LOUD_BIQUAD_GAIN:
 245         case TAS3004_REG_RIGHT_LOUD_BIQUAD_GAIN:
 246                 return 3;
 247
 248         case TAS3004_REG_DRC:
 249         case TAS3004_REG_VOLUME:
 250                 return 6;
 251
 252         case TAS3004_REG_LEFT_MIXER:
 253         case TAS3004_REG_RIGHT_MIXER:
 254                 return 9;
 255
 256         case TAS3004_REG_TEST:
 257                 return 10;
 258
 259         case TAS3004_REG_LEFT_BIQUAD0:
 260         case TAS3004_REG_LEFT_BIQUAD1:
 261         case TAS3004_REG_LEFT_BIQUAD2:
 262         case TAS3004_REG_LEFT_BIQUAD3:
 263         case TAS3004_REG_LEFT_BIQUAD4:
 264         case TAS3004_REG_LEFT_BIQUAD5:
 265         case TAS3004_REG_LEFT_BIQUAD6:
 266
 267         case TAS3004_REG_RIGHT_BIQUAD0:
 268         case TAS3004_REG_RIGHT_BIQUAD1:
 269         case TAS3004_REG_RIGHT_BIQUAD2:
 270         case TAS3004_REG_RIGHT_BIQUAD3:
 271         case TAS3004_REG_RIGHT_BIQUAD4:
 272         case TAS3004_REG_RIGHT_BIQUAD5:
 273         case TAS3004_REG_RIGHT_BIQUAD6:
 274
 275         case TAS3004_REG_LEFT_LOUD_BIQUAD:
 276         case TAS3004_REG_RIGHT_LOUD_BIQUAD:
 277                 return 15;
 278
 279         default:
 280                 return 0;
 281         }
 282 }
 283
 284 static int
 285 tas3004_write_register( struct tas3004_data_t *self,
 286                         enum tas3004_reg_t reg_num,
 287                         char *data,
 288                         uint write_mode)
 289 {
 290         if (reg_num==TAS3004_REG_MCR ||
 291             reg_num==TAS3004_REG_BASS ||
 292             reg_num==TAS3004_REG_TREBLE ||
 293             reg_num==TAS3004_REG_ANALOG_CTRL) {
 294                 return tas_write_byte_register(&self->super,
 295                                                (uint)reg_num,
 296                                                *data,
 297                                                write_mode);
 298         } else {
 299                 return tas_write_register(&self->super,
 300                                           (uint)reg_num,
 301                                           register_width(reg_num),
 302                                           data,
 303                                           write_mode);
 304         }
 305 }
 306
 307 static int
 308 tas3004_sync_register(  struct tas3004_data_t *self,
 309                         enum tas3004_reg_t reg_num)
 310 {
 311         if (reg_num==TAS3004_REG_MCR ||
 312             reg_num==TAS3004_REG_BASS ||
 313             reg_num==TAS3004_REG_TREBLE ||
 314             reg_num==TAS3004_REG_ANALOG_CTRL) {
 315                 return tas_sync_byte_register(&self->super,
 316                                               (uint)reg_num,
 317                                               register_width(reg_num));
 318         } else {
 319                 return tas_sync_register(&self->super,
 320                                          (uint)reg_num,
 321                                          register_width(reg_num));
 322         }
 323 }
 324
 325 static int
 326 tas3004_read_register(  struct tas3004_data_t *self,
 327                         enum tas3004_reg_t reg_num,
 328                         char *data,
 329                         uint write_mode)
 330 {
 331         return tas_read_register(&self->super,
 332                                  (uint)reg_num,
 333                                  register_width(reg_num),
 334                                  data);
 335 }
 336
 337 static inline int
 338 tas3004_fast_load(struct tas3004_data_t *self, int fast)
 339 {
 340         if (fast)
 341                 self->super.shadow[TAS3004_REG_MCR][0] |= 0x80;
 342         else
 343                 self->super.shadow[TAS3004_REG_MCR][0] &= 0x7f;
 344         return tas3004_sync_register(self,TAS3004_REG_MCR);
 345 }
 346
 347 static uint
 348 tas3004_supported_mixers(struct tas3004_data_t *self)
 349 {
 350         return SOUND_MASK_VOLUME |
 351                 SOUND_MASK_PCM |
 352                 SOUND_MASK_ALTPCM |
 353                 SOUND_MASK_IMIX |
 354                 SOUND_MASK_TREBLE |
 355                 SOUND_MASK_BASS |
 356                 SOUND_MASK_MIC |
 357                 SOUND_MASK_LINE;
 358 }
 359
 360 static int
 361 tas3004_mixer_is_stereo(struct tas3004_data_t *self, int mixer)
 362 {
 363         switch(mixer) {
 364         case SOUND_MIXER_VOLUME:
 365         case SOUND_MIXER_PCM:
 366         case SOUND_MIXER_ALTPCM:
 367         case SOUND_MIXER_IMIX:
 368                 return 1;
 369         default:
 370                 return 0;
 371         }
 372 }
 373
 374 static uint
 375 tas3004_stereo_mixers(struct tas3004_data_t *self)
 376 {
 377         uint r = tas3004_supported_mixers(self);
 378         uint i;
 379
 380         for (i=1; i<SOUND_MIXER_NRDEVICES; i++)
 381                 if (r&(1<<i) && !tas3004_mixer_is_stereo(self,i))
 382                         r &= ~(1<<i);
 383         return r;
 384 }
 385
 386 static int
 387 tas3004_get_mixer_level(struct tas3004_data_t *self, int mixer, uint *level)
 388 {
 389         if (!self)
 390                 return -1;
 391
 392         *level = self->super.mixer[mixer];
 393
 394         return 0;
 395 }
 396
 397 static int
 398 tas3004_set_mixer_level(struct tas3004_data_t *self, int mixer, uint level)
 399 {
 400         int rc;
 401         tas_shadow_t *shadow;
 402         uint temp;
 403         uint offset=0;
 404
 405         if (!self)
 406                 return -1;
 407
 408         shadow = self->super.shadow;
 409
 410         if (!tas3004_mixer_is_stereo(self,mixer))
 411                 level = tas_mono_to_stereo(level);
 412         switch(mixer) {
 413         case SOUND_MIXER_VOLUME:
 414                 temp = tas3004_gain.master[level&0xff];
 415                 SET_4_20(shadow[TAS3004_REG_VOLUME], 0, temp);
 416                 temp = tas3004_gain.master[(level>>8)&0xff];
 417                 SET_4_20(shadow[TAS3004_REG_VOLUME], 3, temp);
 418                 rc = tas3004_sync_register(self,TAS3004_REG_VOLUME);
 419                 break;
 420         case SOUND_MIXER_IMIX:
 421                 offset += 3;
 422         case SOUND_MIXER_ALTPCM:
 423                 offset += 3;
 424         case SOUND_MIXER_PCM:
 425                 /*
 426                  * Don't load these in fast mode. The documentation
 427                  * says it can be done in either mode, but testing it
 428                  * shows that fast mode produces ugly clicking.
 429                 */
 430                 /* tas3004_fast_load(self,1); */
 431                 temp = tas3004_gain.mixer[level&0xff];
 432                 SET_4_20(shadow[TAS3004_REG_LEFT_MIXER], offset, temp);
 433                 temp = tas3004_gain.mixer[(level>>8)&0xff];
 434                 SET_4_20(shadow[TAS3004_REG_RIGHT_MIXER], offset, temp);
 435                 rc = tas3004_sync_register(self,TAS3004_REG_LEFT_MIXER);
 436                 if (rc == 0)
 437                         rc=tas3004_sync_register(self,TAS3004_REG_RIGHT_MIXER);
 438                 /* tas3004_fast_load(self,0); */
 439                 break;
 440         case SOUND_MIXER_TREBLE:
 441                 temp = tas3004_gain.treble[level&0xff];
 442                 shadow[TAS3004_REG_TREBLE][0]=temp&0xff;
 443                 rc = tas3004_sync_register(self,TAS3004_REG_TREBLE);
 444                 break;
 445         case SOUND_MIXER_BASS:
 446                 temp = tas3004_gain.bass[level&0xff];
 447                 shadow[TAS3004_REG_BASS][0]=temp&0xff;
 448                 rc = tas3004_sync_register(self,TAS3004_REG_BASS);
 449                 break;
 450         case SOUND_MIXER_MIC:
 451                 if ((level&0xff)>0) {
 452                         software_input_volume = SW_INPUT_VOLUME_SCALE * (level&0xff);
 453                         if (self->super.mixer[mixer] == 0) {
 454                                 self->super.mixer[SOUND_MIXER_LINE] = 0;
 455                                 shadow[TAS3004_REG_ANALOG_CTRL][0]=0xc2;
 456                                 rc = tas3004_sync_register(self,TAS3004_REG_ANALOG_CTRL);
 457                         } else rc=0;
 458                 } else {
 459                         self->super.mixer[SOUND_MIXER_LINE] = SW_INPUT_VOLUME_DEFAULT;
 460                         software_input_volume = SW_INPUT_VOLUME_SCALE *
 461                                 (self->super.mixer[SOUND_MIXER_LINE]&0xff);
 462                         shadow[TAS3004_REG_ANALOG_CTRL][0]=0x00;
 463                         rc = tas3004_sync_register(self,TAS3004_REG_ANALOG_CTRL);
 464                 }
 465                 break;
 466         case SOUND_MIXER_LINE:
 467                 if (self->super.mixer[SOUND_MIXER_MIC] == 0) {
 468                         software_input_volume = SW_INPUT_VOLUME_SCALE * (level&0xff);
 469                         rc=0;
 470                 }
 471                 break;
 472         default:
 473                 rc = -1;
 474                 break;
 475         }
 476         if (rc < 0)
 477                 return rc;
 478         self->super.mixer[mixer] = level;
 479
 480         return 0;
 481 }
 482
 483 static int
 484 tas3004_leave_sleep(struct tas3004_data_t *self)
 485 {
 486         unsigned char mcr = (1<<6)+(2<<4)+(2<<2);
 487
 488         if (!self)
 489                 return -1;
 490
 491         /* Make sure something answers on the i2c bus */
 492         if (tas3004_write_register(self, TAS3004_REG_MCR, &mcr,
 493             WRITE_NORMAL | FORCE_WRITE) < 0)
 494                 return -1;
 495
 496         tas3004_fast_load(self, 1);
 497
 498         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD0);
 499         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD1);
 500         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD2);
 501         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD3);
 502         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD4);
 503         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD5);
 504         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD6);
 505
 506         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD0);
 507         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD1);
 508         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD2);
 509         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD3);
 510         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD4);
 511         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD5);
 512         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD6);
 513
 514         tas3004_fast_load(self, 0);
 515
 516         (void)tas3004_sync_register(self,TAS3004_REG_VOLUME);
 517         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_MIXER);
 518         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_MIXER);
 519         (void)tas3004_sync_register(self,TAS3004_REG_TREBLE);
 520         (void)tas3004_sync_register(self,TAS3004_REG_BASS);
 521         (void)tas3004_sync_register(self,TAS3004_REG_ANALOG_CTRL);
 522
 523         return 0;
 524 }
 525
 526 static int
 527 tas3004_enter_sleep(struct tas3004_data_t *self)
 528 {
 529         if (!self)
 530                 return -1;
 531         return 0;
 532 }
 533
 534 static int
 535 tas3004_sync_biquad(    struct tas3004_data_t *self,
 536                         u_int channel,
 537                         u_int filter)
 538 {
 539         enum tas3004_reg_t reg;
 540
 541         if (channel >= TAS3004_BIQUAD_CHANNEL_COUNT ||
 542             filter  >= TAS3004_BIQUAD_FILTER_COUNT) return -EINVAL;
 543
 544         reg=( channel ? TAS3004_REG_RIGHT_BIQUAD0 : TAS3004_REG_LEFT_BIQUAD0 ) + filter;
 545
 546         return tas3004_sync_register(self,reg);
 547 }
 548
 549 static int
 550 tas3004_write_biquad_shadow(    struct tas3004_data_t *self,
 551                                 u_int channel,
 552                                 u_int filter,
 553                                 const union tas_biquad_t *biquad)
 554 {
 555         tas_shadow_t *shadow=self->super.shadow;
 556         enum tas3004_reg_t reg;
 557
 558         if (channel >= TAS3004_BIQUAD_CHANNEL_COUNT ||
 559             filter  >= TAS3004_BIQUAD_FILTER_COUNT) return -EINVAL;
 560
 561         reg=( channel ? TAS3004_REG_RIGHT_BIQUAD0 : TAS3004_REG_LEFT_BIQUAD0 ) + filter;
 562
 563         SET_4_20(shadow[reg], 0,biquad->coeff.b0);
 564         SET_4_20(shadow[reg], 3,biquad->coeff.b1);
 565         SET_4_20(shadow[reg], 6,biquad->coeff.b2);
 566         SET_4_20(shadow[reg], 9,biquad->coeff.a1);
 567         SET_4_20(shadow[reg],12,biquad->coeff.a2);
 568
 569         return 0;
 570 }
 571
 572 static int
 573 tas3004_write_biquad(   struct tas3004_data_t *self,
 574                         u_int channel,
 575                         u_int filter,
 576                         const union tas_biquad_t *biquad)
 577 {
 578         int rc;
 579
 580         rc=tas3004_write_biquad_shadow(self, channel, filter, biquad);
 581         if (rc < 0) return rc;
 582
 583         return tas3004_sync_biquad(self, channel, filter);
 584 }
 585
 586 static int
 587 tas3004_write_biquad_list(      struct tas3004_data_t *self,
 588                                 u_int filter_count,
 589                                 u_int flags,
 590                                 struct tas_biquad_ctrl_t *biquads)
 591 {
 592         int i;
 593         int rc;
 594
 595         if (flags & TAS_BIQUAD_FAST_LOAD) tas3004_fast_load(self,1);
 596
 597         for (i=0; i<filter_count; i++) {
 598                 rc=tas3004_write_biquad(self,
 599                                         biquads[i].channel,
 600                                         biquads[i].filter,
 601                                         &biquads[i].data);
 602                 if (rc < 0) break;
 603         }
 604
 605         if (flags & TAS_BIQUAD_FAST_LOAD) tas3004_fast_load(self,0);
 606
 607         return rc;
 608 }
 609
 610 static int
 611 tas3004_read_biquad(    struct tas3004_data_t *self,
 612                         u_int channel,
 613                         u_int filter,
 614                         union tas_biquad_t *biquad)
 615 {
 616         tas_shadow_t *shadow=self->super.shadow;
 617         enum tas3004_reg_t reg;
 618
 619         if (channel >= TAS3004_BIQUAD_CHANNEL_COUNT ||
 620             filter  >= TAS3004_BIQUAD_FILTER_COUNT) return -EINVAL;
 621
 622         reg=( channel ? TAS3004_REG_RIGHT_BIQUAD0 : TAS3004_REG_LEFT_BIQUAD0 ) + filter;
 623
 624         biquad->coeff.b0=GET_4_20(shadow[reg], 0);
 625         biquad->coeff.b1=GET_4_20(shadow[reg], 3);
 626         biquad->coeff.b2=GET_4_20(shadow[reg], 6);
 627         biquad->coeff.a1=GET_4_20(shadow[reg], 9);
 628         biquad->coeff.a2=GET_4_20(shadow[reg],12);
 629
 630         return 0;
 631 }
 632
 633 static int
 634 tas3004_eq_rw(  struct tas3004_data_t *self,
 635                 u_int cmd,
 636                 u_long arg)
 637 {
 638         void __user *argp = (void __user *)arg;
 639         int rc;
 640         struct tas_biquad_ctrl_t biquad;
 641
 642         if (copy_from_user((void *)&biquad, argp, sizeof(struct tas_biquad_ctrl_t))) {
 643                 return -EFAULT;
 644         }
 645
 646         if (cmd & SIOC_IN) {
 647                 rc=tas3004_write_biquad(self, biquad.channel, biquad.filter, &biquad.data);
 648                 if (rc != 0) return rc;
 649         }
 650
 651         if (cmd & SIOC_OUT) {
 652                 rc=tas3004_read_biquad(self, biquad.channel, biquad.filter, &biquad.data);
 653                 if (rc != 0) return rc;
 654
 655                 if (copy_to_user(argp, &biquad, sizeof(struct tas_biquad_ctrl_t))) {
 656                         return -EFAULT;
 657                 }
 658
 659         }
 660         return 0;
 661 }
 662
 663 static int
 664 tas3004_eq_list_rw(     struct tas3004_data_t *self,
 665                         u_int cmd,
 666                         u_long arg)
 667 {
 668         int rc = 0;
 669         int filter_count;
 670         int flags;
 671         int i,j;
 672         char sync_required[TAS3004_BIQUAD_CHANNEL_COUNT][TAS3004_BIQUAD_FILTER_COUNT];
 673         struct tas_biquad_ctrl_t biquad;
 674         struct tas_biquad_ctrl_list_t __user *argp = (void __user *)arg;
 675
 676         memset(sync_required,0,sizeof(sync_required));
 677
 678         if (copy_from_user(&filter_count, &argp->filter_count, sizeof(int)))
 679                 return -EFAULT;
 680
 681         if (copy_from_user(&flags, &argp->flags, sizeof(int)))
 682                 return -EFAULT;
 683
 684         if (cmd & SIOC_IN) {
 685         }
 686
 687         for (i=0; i < filter_count; i++) {
 688                 if (copy_from_user(&biquad, &argp->biquads[i],
 689                                    sizeof(struct tas_biquad_ctrl_t))) {
 690                         return -EFAULT;
 691                 }
 692
 693                 if (cmd & SIOC_IN) {
 694                         sync_required[biquad.channel][biquad.filter]=1;
 695                         rc=tas3004_write_biquad_shadow(self, biquad.channel, biquad.filter, &biquad.data);
 696                         if (rc != 0) return rc;
 697                 }
 698
 699                 if (cmd & SIOC_OUT) {
 700                         rc=tas3004_read_biquad(self, biquad.channel, biquad.filter, &biquad.data);
 701                         if (rc != 0) return rc;
 702
 703                         if (copy_to_user(&argp->biquads[i], &biquad,
 704                                          sizeof(struct tas_biquad_ctrl_t))) {
 705                                 return -EFAULT;
 706                         }
 707                 }
 708         }
 709
 710         if (cmd & SIOC_IN) {
 711                 /*
 712                  * This is OK for the tas3004. For the
 713                  * tas3001c, going into fast load mode causes
 714                  * the treble and bass to be reset to 0dB, and
 715                  * volume controls to be muted.
 716                  */
 717                 if (flags & TAS_BIQUAD_FAST_LOAD) tas3004_fast_load(self,1);
 718                 for (i=0; i<TAS3004_BIQUAD_CHANNEL_COUNT; i++) {
 719                         for (j=0; j<TAS3004_BIQUAD_FILTER_COUNT; j++) {
 720                                 if (sync_required[i][j]) {
 721                                         rc=tas3004_sync_biquad(self, i, j);
 722                                         if (rc < 0) goto out;
 723                                 }
 724                         }
 725                 }
 726         out:
 727                 if (flags & TAS_BIQUAD_FAST_LOAD)
 728                         tas3004_fast_load(self,0);
 729         }
 730
 731         return rc;
 732 }
 733
 734 static int
 735 tas3004_update_drce(    struct tas3004_data_t *self,
 736                         int flags,
 737                         struct tas_drce_t *drce)
 738 {
 739         tas_shadow_t *shadow;
 740         int i;
 741         shadow=self->super.shadow;
 742
 743         if (flags & TAS_DRCE_ABOVE_RATIO) {
 744                 self->drce_state.above.expand = drce->above.expand;
 745                 if (drce->above.val == (1<<8)) {
 746                         self->drce_state.above.val = 1<<8;
 747                         shadow[TAS3004_REG_DRC][0] = 0x02;
 748
 749                 } else if (drce->above.expand) {
 750                         i=above_threshold_expansion_index(drce->above.val);
 751                         self->drce_state.above.val=above_threshold_expansion_ratio[i];
 752                         shadow[TAS3004_REG_DRC][0] = 0x0a + (i<<3);
 753                 } else {
 754                         i=above_threshold_compression_index(drce->above.val);
 755                         self->drce_state.above.val=above_threshold_compression_ratio[i];
 756                         shadow[TAS3004_REG_DRC][0] = 0x08 + (i<<3);
 757                 }
 758         }
 759
 760         if (flags & TAS_DRCE_BELOW_RATIO) {
 761                 self->drce_state.below.expand = drce->below.expand;
 762                 if (drce->below.val == (1<<8)) {
 763                         self->drce_state.below.val = 1<<8;
 764                         shadow[TAS3004_REG_DRC][1] = 0x02;
 765
 766                 } else if (drce->below.expand) {
 767                         i=below_threshold_expansion_index(drce->below.val);
 768                         self->drce_state.below.val=below_threshold_expansion_ratio[i];
 769                         shadow[TAS3004_REG_DRC][1] = 0x08 + (i<<3);
 770                 } else {
 771                         i=below_threshold_compression_index(drce->below.val);
 772                         self->drce_state.below.val=below_threshold_compression_ratio[i];
 773                         shadow[TAS3004_REG_DRC][1] = 0x0a + (i<<3);
 774                 }
 775         }
 776
 777         if (flags & TAS_DRCE_THRESHOLD) {
 778                 self->drce_state.threshold=quantize_db(drce->threshold);
 779                 shadow[TAS3004_REG_DRC][2] = db_to_regval(self->drce_state.threshold);
 780         }
 781
 782         if (flags & TAS_DRCE_ENERGY) {
 783                 i=time_index(drce->energy);
 784                 self->drce_state.energy=time_constants[i];
 785                 shadow[TAS3004_REG_DRC][3] = 0x40 + (i<<4);
 786         }
 787
 788         if (flags & TAS_DRCE_ATTACK) {
 789                 i=time_index(drce->attack);
 790                 self->drce_state.attack=time_constants[i];
 791                 shadow[TAS3004_REG_DRC][4] = 0x40 + (i<<4);
 792         }
 793
 794         if (flags & TAS_DRCE_DECAY) {
 795                 i=time_index(drce->decay);
 796                 self->drce_state.decay=time_constants[i];
 797                 shadow[TAS3004_REG_DRC][5] = 0x40 + (i<<4);
 798         }
 799
 800         if (flags & TAS_DRCE_ENABLE) {
 801                 self->drce_state.enable = drce->enable;
 802         }
 803
 804         if (!self->drce_state.enable) {
 805                 shadow[TAS3004_REG_DRC][0] |= 0x01;
 806         }
 807
 808 #ifdef DEBUG_DRCE
 809         printk("DRCE: set [ ENABLE:%x ABOVE:%x/%x BELOW:%x/%x THRESH:%x ENERGY:%x ATTACK:%x DECAY:%x\n",
 810                self->drce_state.enable,
 811                self->drce_state.above.expand,self->drce_state.above.val,
 812                self->drce_state.below.expand,self->drce_state.below.val,
 813                self->drce_state.threshold,
 814                self->drce_state.energy,
 815                self->drce_state.attack,
 816                self->drce_state.decay);
 817
 818         printk("DRCE: reg [ %02x %02x %02x %02x %02x %02x ]\n",
 819                (unsigned char)shadow[TAS3004_REG_DRC][0],
 820                (unsigned char)shadow[TAS3004_REG_DRC][1],
 821                (unsigned char)shadow[TAS3004_REG_DRC][2],
 822                (unsigned char)shadow[TAS3004_REG_DRC][3],
 823                (unsigned char)shadow[TAS3004_REG_DRC][4],
 824                (unsigned char)shadow[TAS3004_REG_DRC][5]);
 825 #endif
 826
 827         return tas3004_sync_register(self, TAS3004_REG_DRC);
 828 }
 829
 830 static int
 831 tas3004_drce_rw(        struct tas3004_data_t *self,
 832                         u_int cmd,
 833                         u_long arg)
 834 {
 835         int rc;
 836         struct tas_drce_ctrl_t drce_ctrl;
 837         void __user *argp = (void __user *)arg;
 838
 839         if (copy_from_user(&drce_ctrl, argp, sizeof(struct tas_drce_ctrl_t)))
 840                 return -EFAULT;
 841
 842 #ifdef DEBUG_DRCE
 843         printk("DRCE: input [ FLAGS:%x ENABLE:%x ABOVE:%x/%x BELOW:%x/%x THRESH:%x ENERGY:%x ATTACK:%x DECAY:%x\n",
 844                drce_ctrl.flags,
 845                drce_ctrl.data.enable,
 846                drce_ctrl.data.above.expand,drce_ctrl.data.above.val,
 847                drce_ctrl.data.below.expand,drce_ctrl.data.below.val,
 848                drce_ctrl.data.threshold,
 849                drce_ctrl.data.energy,
 850                drce_ctrl.data.attack,
 851                drce_ctrl.data.decay);
 852 #endif
 853
 854         if (cmd & SIOC_IN) {
 855                 rc = tas3004_update_drce(self, drce_ctrl.flags, &drce_ctrl.data);
 856                 if (rc < 0) return rc;
 857         }
 858
 859         if (cmd & SIOC_OUT) {
 860                 if (drce_ctrl.flags & TAS_DRCE_ENABLE)
 861                         drce_ctrl.data.enable = self->drce_state.enable;
 862                 if (drce_ctrl.flags & TAS_DRCE_ABOVE_RATIO)
 863                         drce_ctrl.data.above = self->drce_state.above;
 864                 if (drce_ctrl.flags & TAS_DRCE_BELOW_RATIO)
 865                         drce_ctrl.data.below = self->drce_state.below;
 866                 if (drce_ctrl.flags & TAS_DRCE_THRESHOLD)
 867                         drce_ctrl.data.threshold = self->drce_state.threshold;
 868                 if (drce_ctrl.flags & TAS_DRCE_ENERGY)
 869                         drce_ctrl.data.energy = self->drce_state.energy;
 870                 if (drce_ctrl.flags & TAS_DRCE_ATTACK)
 871                         drce_ctrl.data.attack = self->drce_state.attack;
 872                 if (drce_ctrl.flags & TAS_DRCE_DECAY)
 873                         drce_ctrl.data.decay = self->drce_state.decay;
 874
 875                 if (copy_to_user(argp, &drce_ctrl,
 876                                  sizeof(struct tas_drce_ctrl_t))) {
 877                         return -EFAULT;
 878                 }
 879         }
 880
 881         return 0;
 882 }
 883
 884 static void
 885 tas3004_update_device_parameters(struct tas3004_data_t *self)
 886 {
 887         char data;
 888         int i;
 889
 890         if (!self) return;
 891
 892         if (self->output_id == TAS_OUTPUT_HEADPHONES) {
 893                 /* turn on allPass when headphones are plugged in */
 894                 data = 0x02;
 895         } else {
 896                 data = 0x00;
 897         }
 898
 899         tas3004_write_register(self, TAS3004_REG_MCR2, &data, WRITE_NORMAL | FORCE_WRITE);
 900
 901         for (i=0; tas3004_eq_prefs[i]; i++) {
 902                 struct tas_eq_pref_t *eq = tas3004_eq_prefs[i];
 903
 904                 if (eq->device_id == self->device_id &&
 905                     (eq->output_id == 0 || eq->output_id == self->output_id) &&
 906                     (eq->speaker_id == 0 || eq->speaker_id == self->speaker_id)) {
 907
 908                         tas3004_update_drce(self, TAS_DRCE_ALL, eq->drce);
 909                         tas3004_write_biquad_list(self, eq->filter_count, TAS_BIQUAD_FAST_LOAD, eq->biquads);
 910
 911                         break;
 912                 }
 913         }
 914 }
 915
 916 static void
 917 tas3004_device_change_handler(void *self)
 918 {
 919         if (!self) return;
 920
 921         tas3004_update_device_parameters((struct tas3004_data_t *)self);
 922 }
 923
 924 static struct work_struct device_change;
 925
 926 static int
 927 tas3004_output_device_change(   struct tas3004_data_t *self,
 928                                 int device_id,
 929                                 int output_id,
 930                                 int speaker_id)
 931 {
 932         self->device_id=device_id;
 933         self->output_id=output_id;
 934         self->speaker_id=speaker_id;
 935
 936         schedule_work(&device_change);
 937
 938         return 0;
 939 }
 940
 941 static int
 942 tas3004_device_ioctl(   struct tas3004_data_t *self,
 943                         u_int cmd,
 944                         u_long arg)
 945 {
 946         uint __user *argp = (void __user *)arg;
 947         switch (cmd) {
 948         case TAS_READ_EQ:
 949         case TAS_WRITE_EQ:
 950                 return tas3004_eq_rw(self, cmd, arg);
 951
 952         case TAS_READ_EQ_LIST:
 953         case TAS_WRITE_EQ_LIST:
 954                 return tas3004_eq_list_rw(self, cmd, arg);
 955
 956         case TAS_READ_EQ_FILTER_COUNT:
 957                 put_user(TAS3004_BIQUAD_FILTER_COUNT, argp);
 958                 return 0;
 959
 960         case TAS_READ_EQ_CHANNEL_COUNT:
 961                 put_user(TAS3004_BIQUAD_CHANNEL_COUNT, argp);
 962                 return 0;
 963
 964         case TAS_READ_DRCE:
 965         case TAS_WRITE_DRCE:
 966                 return tas3004_drce_rw(self, cmd, arg);
 967
 968         case TAS_READ_DRCE_CAPS:
 969                 put_user(TAS_DRCE_ENABLE         |
 970                          TAS_DRCE_ABOVE_RATIO    |
 971                          TAS_DRCE_BELOW_RATIO    |
 972                          TAS_DRCE_THRESHOLD      |
 973                          TAS_DRCE_ENERGY         |
 974                          TAS_DRCE_ATTACK         |
 975                          TAS_DRCE_DECAY,
 976                          argp);
 977                 return 0;
 978
 979         case TAS_READ_DRCE_MIN:
 980         case TAS_READ_DRCE_MAX: {
 981                 struct tas_drce_ctrl_t drce_ctrl;
 982                 const struct tas_drce_t *drce_copy;
 983
 984                 if (copy_from_user(&drce_ctrl, argp,
 985                                    sizeof(struct tas_drce_ctrl_t))) {
 986                         return -EFAULT;
 987                 }
 988
 989                 if (cmd == TAS_READ_DRCE_MIN) {
 990                         drce_copy=&tas3004_drce_min;
 991                 } else {
 992                         drce_copy=&tas3004_drce_max;
 993                 }
 994
 995                 if (drce_ctrl.flags & TAS_DRCE_ABOVE_RATIO) {
 996                         drce_ctrl.data.above=drce_copy->above;
 997                 }
 998                 if (drce_ctrl.flags & TAS_DRCE_BELOW_RATIO) {
 999                         drce_ctrl.data.below=drce_copy->below;
1000                 }
1001                 if (drce_ctrl.flags & TAS_DRCE_THRESHOLD) {
1002                         drce_ctrl.data.threshold=drce_copy->threshold;
1003                 }
1004                 if (drce_ctrl.flags & TAS_DRCE_ENERGY) {
1005                         drce_ctrl.data.energy=drce_copy->energy;
1006                 }
1007                 if (drce_ctrl.flags & TAS_DRCE_ATTACK) {
1008                         drce_ctrl.data.attack=drce_copy->attack;
1009                 }
1010                 if (drce_ctrl.flags & TAS_DRCE_DECAY) {
1011                         drce_ctrl.data.decay=drce_copy->decay;
1012                 }
1013
1014                 if (copy_to_user(argp, &drce_ctrl,
1015                                  sizeof(struct tas_drce_ctrl_t))) {
1016                         return -EFAULT;
1017                 }
1018         }
1019         }
1020
1021         return -EINVAL;
1022 }
1023
1024 static int
1025 tas3004_init_mixer(struct tas3004_data_t *self)
1026 {
1027         unsigned char mcr = (1<<6)+(2<<4)+(2<<2);
1028
1029         /* Make sure something answers on the i2c bus */
1030         if (tas3004_write_register(self, TAS3004_REG_MCR, &mcr,
1031             WRITE_NORMAL | FORCE_WRITE) < 0)
1032                 return -1;
1033
1034         tas3004_fast_load(self, 1);
1035
1036         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD0);
1037         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD1);
1038         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD2);
1039         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD3);
1040         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD4);
1041         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD5);
1042         (void)tas3004_sync_register(self,TAS3004_REG_RIGHT_BIQUAD6);
1043
1044         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD0);
1045         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD1);
1046         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD2);
1047         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD3);
1048         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD4);
1049         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD5);
1050         (void)tas3004_sync_register(self,TAS3004_REG_LEFT_BIQUAD6);
1051
1052         tas3004_sync_register(self, TAS3004_REG_DRC);
1053
1054         tas3004_sync_register(self, TAS3004_REG_MCR2);
1055
1056         tas3004_fast_load(self, 0);
1057
1058         tas3004_set_mixer_level(self, SOUND_MIXER_VOLUME, VOL_DEFAULT<<8 | VOL_DEFAULT);
1059         tas3004_set_mixer_level(self, SOUND_MIXER_PCM, INPUT_DEFAULT<<8 | INPUT_DEFAULT);
1060         tas3004_set_mixer_level(self, SOUND_MIXER_ALTPCM, 0);
1061         tas3004_set_mixer_level(self, SOUND_MIXER_IMIX, 0);
1062
1063         tas3004_set_mixer_level(self, SOUND_MIXER_BASS, BASS_DEFAULT);
1064         tas3004_set_mixer_level(self, SOUND_MIXER_TREBLE, TREBLE_DEFAULT);
1065
1066         tas3004_set_mixer_level(self, SOUND_MIXER_LINE,SW_INPUT_VOLUME_DEFAULT);
1067
1068         return 0;
1069 }
1070
1071 static int
1072 tas3004_uninit_mixer(struct tas3004_data_t *self)
1073 {
1074         tas3004_set_mixer_level(self, SOUND_MIXER_VOLUME, 0);
1075         tas3004_set_mixer_level(self, SOUND_MIXER_PCM, 0);
1076         tas3004_set_mixer_level(self, SOUND_MIXER_ALTPCM, 0);
1077         tas3004_set_mixer_level(self, SOUND_MIXER_IMIX, 0);
1078
1079         tas3004_set_mixer_level(self, SOUND_MIXER_BASS, 0);
1080         tas3004_set_mixer_level(self, SOUND_MIXER_TREBLE, 0);
1081
1082         tas3004_set_mixer_level(self, SOUND_MIXER_LINE, 0);
1083
1084         return 0;
1085 }
1086
1087 static int
1088 tas3004_init(struct i2c_client *client)
1089 {
1090         struct tas3004_data_t *self;
1091         size_t sz = sizeof(*self) + (TAS3004_REG_MAX*sizeof(tas_shadow_t));
1092         char drce_init[] = { 0x69, 0x22, 0x9f, 0xb0, 0x60, 0xa0 };
1093         char mcr2 = 0;
1094         int i, j;
1095
1096         self = kmalloc(sz, GFP_KERNEL);
1097         if (!self)
1098                 return -ENOMEM;
1099         memset(self, 0, sz);
1100
1101         self->super.client = client;
1102         self->super.shadow = (tas_shadow_t *)(self+1);
1103         self->output_id = TAS_OUTPUT_HEADPHONES;
1104
1105         dev_set_drvdata(&client->dev, self);
1106
1107         for (i = 0; i < TAS3004_BIQUAD_CHANNEL_COUNT; i++)
1108                 for (j = 0; j<TAS3004_BIQUAD_FILTER_COUNT; j++)
1109                         tas3004_write_biquad_shadow(self, i, j,
1110                                         &tas3004_eq_unity);
1111
1112         tas3004_write_register(self, TAS3004_REG_MCR2, &mcr2, WRITE_SHADOW);
1113         tas3004_write_register(self, TAS3004_REG_DRC, drce_init, WRITE_SHADOW);
1114
1115         INIT_WORK(&device_change, tas3004_device_change_handler, self);
1116         return 0;
1117 }
1118
1119 static void
1120 tas3004_uninit(struct tas3004_data_t *self)
1121 {
1122         tas3004_uninit_mixer(self);
1123         kfree(self);
1124 }
1125
1126
1127 struct tas_driver_hooks_t tas3004_hooks = {
1128         .init                   = (tas_hook_init_t)tas3004_init,
1129         .post_init              = (tas_hook_post_init_t)tas3004_init_mixer,
1130         .uninit                 = (tas_hook_uninit_t)tas3004_uninit,
1131         .get_mixer_level        = (tas_hook_get_mixer_level_t)tas3004_get_mixer_level,
1132         .set_mixer_level        = (tas_hook_set_mixer_level_t)tas3004_set_mixer_level,
1133         .enter_sleep            = (tas_hook_enter_sleep_t)tas3004_enter_sleep,
1134         .leave_sleep            = (tas_hook_leave_sleep_t)tas3004_leave_sleep,
1135         .supported_mixers       = (tas_hook_supported_mixers_t)tas3004_supported_mixers,
1136         .mixer_is_stereo        = (tas_hook_mixer_is_stereo_t)tas3004_mixer_is_stereo,
1137         .stereo_mixers          = (tas_hook_stereo_mixers_t)tas3004_stereo_mixers,
1138         .output_device_change   = (tas_hook_output_device_change_t)tas3004_output_device_change,
1139         .device_ioctl           = (tas_hook_device_ioctl_t)tas3004_device_ioctl
1140 };