1/* 2 * Apple Onboard Audio driver for tas codec 3 * 4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * GPL v2, can be found in COPYING. 7 * 8 * Open questions: 9 * - How to distinguish between 3004 and versions? 10 * 11 * FIXMEs: 12 * - This codec driver doesn't honour the 'connected' 13 * property of the aoa_codec struct, hence if 14 * it is used in machines where not everything is 15 * connected it will display wrong mixer elements. 16 * - Driver assumes that the microphone is always 17 * monaureal and connected to the right channel of 18 * the input. This should also be a codec-dependent 19 * flag, maybe the codec should have 3 different 20 * bits for the three different possibilities how 21 * it can be hooked up... 22 * But as long as I don't see any hardware hooked 23 * up that way... 24 * - As Apple notes in their code, the tas3004 seems 25 * to delay the right channel by one sample. You can 26 * see this when for example recording stereo in 27 * audacity, or recording the tas output via cable 28 * on another machine (use a sinus generator or so). 29 * I tried programming the BiQuads but couldn't 30 * make the delay work, maybe someone can read the 31 * datasheet and fix it. The relevant Apple comment 32 * is in AppleTAS3004Audio.cpp lines 1637 ff. Note 33 * that their comment describing how they program 34 * the filters sucks... 35 * 36 * Other things: 37 * - this should actually register *two* aoa_codec 38 * structs since it has two inputs. Then it must 39 * use the prepare callback to forbid running the 40 * secondary output on a different clock. 41 * Also, whatever bus knows how to do this must 42 * provide two soundbus_dev devices and the fabric 43 * must be able to link them correctly. 44 * 45 * I don't even know if Apple ever uses the second 46 * port on the tas3004 though, I don't think their 47 * i2s controllers can even do it. OTOH, they all 48 * derive the clocks from common clocks, so it 49 * might just be possible. The framework allows the 50 * codec to refine the transfer_info items in the 51 * usable callback, so we can simply remove the 52 * rates the second instance is not using when it 53 * actually is in use. 54 * Maybe we'll need to make the sound busses have 55 * a 'clock group id' value so the codec can 56 * determine if the two outputs can be driven at 57 * the same time. But that is likely overkill, up 58 * to the fabric to not link them up incorrectly, 59 * and up to the hardware designer to not wire 60 * them up in some weird unusable way. 61 */ 62#include <stddef.h> 63#include <linux/i2c.h> 64#include <asm/pmac_low_i2c.h> 65#include <asm/prom.h> 66#include <linux/delay.h> 67#include <linux/module.h> 68#include <linux/mutex.h> 69 70MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); 71MODULE_LICENSE("GPL"); 72MODULE_DESCRIPTION("tas codec driver for snd-aoa"); 73 74#include "snd-aoa-codec-tas.h" 75#include "snd-aoa-codec-tas-gain-table.h" 76#include "snd-aoa-codec-tas-basstreble.h" 77#include "../aoa.h" 78#include "../soundbus/soundbus.h" 79 80#define PFX "snd-aoa-codec-tas: " 81 82 83struct tas { 84 struct aoa_codec codec; 85 struct i2c_client i2c; 86 u32 mute_l:1, mute_r:1 , 87 controls_created:1 , 88 drc_enabled:1, 89 hw_enabled:1; 90 u8 cached_volume_l, cached_volume_r; 91 u8 mixer_l[3], mixer_r[3]; 92 u8 bass, treble; 93 u8 acr; 94 int drc_range; 95 /* protects hardware access against concurrency from 96 * userspace when hitting controls and during 97 * codec init/suspend/resume */ 98 struct mutex mtx; 99}; 100 101static int tas_reset_init(struct tas *tas); 102 103static struct tas *codec_to_tas(struct aoa_codec *codec) 104{ 105 return container_of(codec, struct tas, codec); 106} 107 108static inline int tas_write_reg(struct tas *tas, u8 reg, u8 len, u8 *data) 109{ 110 if (len == 1) 111 return i2c_smbus_write_byte_data(&tas->i2c, reg, *data); 112 else 113 return i2c_smbus_write_i2c_block_data(&tas->i2c, reg, len, data); 114} 115 116static void tas3004_set_drc(struct tas *tas) 117{ 118 unsigned char val[6]; 119 120 if (tas->drc_enabled) 121 val[0] = 0x50; /* 3:1 above threshold */ 122 else 123 val[0] = 0x51; /* disabled */ 124 val[1] = 0x02; /* 1:1 below threshold */ 125 if (tas->drc_range > 0xef) 126 val[2] = 0xef; 127 else if (tas->drc_range < 0) 128 val[2] = 0x00; 129 else 130 val[2] = tas->drc_range; 131 val[3] = 0xb0; 132 val[4] = 0x60; 133 val[5] = 0xa0; 134 135 tas_write_reg(tas, TAS_REG_DRC, 6, val); 136} 137 138static void tas_set_treble(struct tas *tas) 139{ 140 u8 tmp; 141 142 tmp = tas3004_treble(tas->treble); 143 tas_write_reg(tas, TAS_REG_TREBLE, 1, &tmp); 144} 145 146static void tas_set_bass(struct tas *tas) 147{ 148 u8 tmp; 149 150 tmp = tas3004_bass(tas->bass); 151 tas_write_reg(tas, TAS_REG_BASS, 1, &tmp); 152} 153 154static void tas_set_volume(struct tas *tas) 155{ 156 u8 block[6]; 157 int tmp; 158 u8 left, right; 159 160 left = tas->cached_volume_l; 161 right = tas->cached_volume_r; 162 163 if (left > 177) left = 177; 164 if (right > 177) right = 177; 165 166 if (tas->mute_l) left = 0; 167 if (tas->mute_r) right = 0; 168 169 /* analysing the volume and mixer tables shows 170 * that they are similar enough when we shift 171 * the mixer table down by 4 bits. The error 172 * is miniscule, in just one item the error 173 * is 1, at a value of 0x07f17b (mixer table 174 * value is 0x07f17a) */ 175 tmp = tas_gaintable[left]; 176 block[0] = tmp>>20; 177 block[1] = tmp>>12; 178 block[2] = tmp>>4; 179 tmp = tas_gaintable[right]; 180 block[3] = tmp>>20; 181 block[4] = tmp>>12; 182 block[5] = tmp>>4; 183 tas_write_reg(tas, TAS_REG_VOL, 6, block); 184} 185 186static void tas_set_mixer(struct tas *tas) 187{ 188 u8 block[9]; 189 int tmp, i; 190 u8 val; 191 192 for (i=0;i<3;i++) { 193 val = tas->mixer_l[i]; 194 if (val > 177) val = 177; 195 tmp = tas_gaintable[val]; 196 block[3*i+0] = tmp>>16; 197 block[3*i+1] = tmp>>8; 198 block[3*i+2] = tmp; 199 } 200 tas_write_reg(tas, TAS_REG_LMIX, 9, block); 201 202 for (i=0;i<3;i++) { 203 val = tas->mixer_r[i]; 204 if (val > 177) val = 177; 205 tmp = tas_gaintable[val]; 206 block[3*i+0] = tmp>>16; 207 block[3*i+1] = tmp>>8; 208 block[3*i+2] = tmp; 209 } 210 tas_write_reg(tas, TAS_REG_RMIX, 9, block); 211} 212 213/* alsa stuff */ 214 215static int tas_dev_register(struct snd_device *dev) 216{ 217 return 0; 218} 219 220static struct snd_device_ops ops = { 221 .dev_register = tas_dev_register, 222}; 223 224static int tas_snd_vol_info(struct snd_kcontrol *kcontrol, 225 struct snd_ctl_elem_info *uinfo) 226{ 227 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 228 uinfo->count = 2; 229 uinfo->value.integer.min = 0; 230 uinfo->value.integer.max = 177; 231 return 0; 232} 233 234static int tas_snd_vol_get(struct snd_kcontrol *kcontrol, 235 struct snd_ctl_elem_value *ucontrol) 236{ 237 struct tas *tas = snd_kcontrol_chip(kcontrol); 238 239 mutex_lock(&tas->mtx); 240 ucontrol->value.integer.value[0] = tas->cached_volume_l; 241 ucontrol->value.integer.value[1] = tas->cached_volume_r; 242 mutex_unlock(&tas->mtx); 243 return 0; 244} 245 246static int tas_snd_vol_put(struct snd_kcontrol *kcontrol, 247 struct snd_ctl_elem_value *ucontrol) 248{ 249 struct tas *tas = snd_kcontrol_chip(kcontrol); 250 251 mutex_lock(&tas->mtx); 252 if (tas->cached_volume_l == ucontrol->value.integer.value[0] 253 && tas->cached_volume_r == ucontrol->value.integer.value[1]) { 254 mutex_unlock(&tas->mtx); 255 return 0; 256 } 257 258 tas->cached_volume_l = ucontrol->value.integer.value[0]; 259 tas->cached_volume_r = ucontrol->value.integer.value[1]; 260 if (tas->hw_enabled) 261 tas_set_volume(tas); 262 mutex_unlock(&tas->mtx); 263 return 1; 264} 265 266static struct snd_kcontrol_new volume_control = { 267 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 268 .name = "Master Playback Volume", 269 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 270 .info = tas_snd_vol_info, 271 .get = tas_snd_vol_get, 272 .put = tas_snd_vol_put, 273}; 274 275static int tas_snd_mute_info(struct snd_kcontrol *kcontrol, 276 struct snd_ctl_elem_info *uinfo) 277{ 278 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 279 uinfo->count = 2; 280 uinfo->value.integer.min = 0; 281 uinfo->value.integer.max = 1; 282 return 0; 283} 284 285static int tas_snd_mute_get(struct snd_kcontrol *kcontrol, 286 struct snd_ctl_elem_value *ucontrol) 287{ 288 struct tas *tas = snd_kcontrol_chip(kcontrol); 289 290 mutex_lock(&tas->mtx); 291 ucontrol->value.integer.value[0] = !tas->mute_l; 292 ucontrol->value.integer.value[1] = !tas->mute_r; 293 mutex_unlock(&tas->mtx); 294 return 0; 295} 296 297static int tas_snd_mute_put(struct snd_kcontrol *kcontrol, 298 struct snd_ctl_elem_value *ucontrol) 299{ 300 struct tas *tas = snd_kcontrol_chip(kcontrol); 301 302 mutex_lock(&tas->mtx); 303 if (tas->mute_l == !ucontrol->value.integer.value[0] 304 && tas->mute_r == !ucontrol->value.integer.value[1]) { 305 mutex_unlock(&tas->mtx); 306 return 0; 307 } 308 309 tas->mute_l = !ucontrol->value.integer.value[0]; 310 tas->mute_r = !ucontrol->value.integer.value[1]; 311 if (tas->hw_enabled) 312 tas_set_volume(tas); 313 mutex_unlock(&tas->mtx); 314 return 1; 315} 316 317static struct snd_kcontrol_new mute_control = { 318 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 319 .name = "Master Playback Switch", 320 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 321 .info = tas_snd_mute_info, 322 .get = tas_snd_mute_get, 323 .put = tas_snd_mute_put, 324}; 325 326static int tas_snd_mixer_info(struct snd_kcontrol *kcontrol, 327 struct snd_ctl_elem_info *uinfo) 328{ 329 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 330 uinfo->count = 2; 331 uinfo->value.integer.min = 0; 332 uinfo->value.integer.max = 177; 333 return 0; 334} 335 336static int tas_snd_mixer_get(struct snd_kcontrol *kcontrol, 337 struct snd_ctl_elem_value *ucontrol) 338{ 339 struct tas *tas = snd_kcontrol_chip(kcontrol); 340 int idx = kcontrol->private_value; 341 342 mutex_lock(&tas->mtx); 343 ucontrol->value.integer.value[0] = tas->mixer_l[idx]; 344 ucontrol->value.integer.value[1] = tas->mixer_r[idx]; 345 mutex_unlock(&tas->mtx); 346 347 return 0; 348} 349 350static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol, 351 struct snd_ctl_elem_value *ucontrol) 352{ 353 struct tas *tas = snd_kcontrol_chip(kcontrol); 354 int idx = kcontrol->private_value; 355 356 mutex_lock(&tas->mtx); 357 if (tas->mixer_l[idx] == ucontrol->value.integer.value[0] 358 && tas->mixer_r[idx] == ucontrol->value.integer.value[1]) { 359 mutex_unlock(&tas->mtx); 360 return 0; 361 } 362 363 tas->mixer_l[idx] = ucontrol->value.integer.value[0]; 364 tas->mixer_r[idx] = ucontrol->value.integer.value[1]; 365 366 if (tas->hw_enabled) 367 tas_set_mixer(tas); 368 mutex_unlock(&tas->mtx); 369 return 1; 370} 371 372#define MIXER_CONTROL(n,descr,idx) \ 373static struct snd_kcontrol_new n##_control = { \ 374 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ 375 .name = descr " Playback Volume", \ 376 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 377 .info = tas_snd_mixer_info, \ 378 .get = tas_snd_mixer_get, \ 379 .put = tas_snd_mixer_put, \ 380 .private_value = idx, \ 381} 382 383MIXER_CONTROL(pcm1, "PCM", 0); 384MIXER_CONTROL(monitor, "Monitor", 2); 385 386static int tas_snd_drc_range_info(struct snd_kcontrol *kcontrol, 387 struct snd_ctl_elem_info *uinfo) 388{ 389 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 390 uinfo->count = 1; 391 uinfo->value.integer.min = 0; 392 uinfo->value.integer.max = TAS3004_DRC_MAX; 393 return 0; 394} 395 396static int tas_snd_drc_range_get(struct snd_kcontrol *kcontrol, 397 struct snd_ctl_elem_value *ucontrol) 398{ 399 struct tas *tas = snd_kcontrol_chip(kcontrol); 400 401 mutex_lock(&tas->mtx); 402 ucontrol->value.integer.value[0] = tas->drc_range; 403 mutex_unlock(&tas->mtx); 404 return 0; 405} 406 407static int tas_snd_drc_range_put(struct snd_kcontrol *kcontrol, 408 struct snd_ctl_elem_value *ucontrol) 409{ 410 struct tas *tas = snd_kcontrol_chip(kcontrol); 411 412 mutex_lock(&tas->mtx); 413 if (tas->drc_range == ucontrol->value.integer.value[0]) { 414 mutex_unlock(&tas->mtx); 415 return 0; 416 } 417 418 tas->drc_range = ucontrol->value.integer.value[0]; 419 if (tas->hw_enabled) 420 tas3004_set_drc(tas); 421 mutex_unlock(&tas->mtx); 422 return 1; 423} 424 425static struct snd_kcontrol_new drc_range_control = { 426 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 427 .name = "DRC Range", 428 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 429 .info = tas_snd_drc_range_info, 430 .get = tas_snd_drc_range_get, 431 .put = tas_snd_drc_range_put, 432}; 433 434static int tas_snd_drc_switch_info(struct snd_kcontrol *kcontrol, 435 struct snd_ctl_elem_info *uinfo) 436{ 437 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 438 uinfo->count = 1; 439 uinfo->value.integer.min = 0; 440 uinfo->value.integer.max = 1; 441 return 0; 442} 443 444static int tas_snd_drc_switch_get(struct snd_kcontrol *kcontrol, 445 struct snd_ctl_elem_value *ucontrol) 446{ 447 struct tas *tas = snd_kcontrol_chip(kcontrol); 448 449 mutex_lock(&tas->mtx); 450 ucontrol->value.integer.value[0] = tas->drc_enabled; 451 mutex_unlock(&tas->mtx); 452 return 0; 453} 454 455static int tas_snd_drc_switch_put(struct snd_kcontrol *kcontrol, 456 struct snd_ctl_elem_value *ucontrol) 457{ 458 struct tas *tas = snd_kcontrol_chip(kcontrol); 459 460 mutex_lock(&tas->mtx); 461 if (tas->drc_enabled == ucontrol->value.integer.value[0]) { 462 mutex_unlock(&tas->mtx); 463 return 0; 464 } 465 466 tas->drc_enabled = ucontrol->value.integer.value[0]; 467 if (tas->hw_enabled) 468 tas3004_set_drc(tas); 469 mutex_unlock(&tas->mtx); 470 return 1; 471} 472 473static struct snd_kcontrol_new drc_switch_control = { 474 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 475 .name = "DRC Range Switch", 476 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 477 .info = tas_snd_drc_switch_info, 478 .get = tas_snd_drc_switch_get, 479 .put = tas_snd_drc_switch_put, 480}; 481 482static int tas_snd_capture_source_info(struct snd_kcontrol *kcontrol, 483 struct snd_ctl_elem_info *uinfo) 484{ 485 static char *texts[] = { "Line-In", "Microphone" }; 486 487 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 488 uinfo->count = 1; 489 uinfo->value.enumerated.items = 2; 490 if (uinfo->value.enumerated.item > 1) 491 uinfo->value.enumerated.item = 1; 492 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]); 493 return 0; 494} 495 496static int tas_snd_capture_source_get(struct snd_kcontrol *kcontrol, 497 struct snd_ctl_elem_value *ucontrol) 498{ 499 struct tas *tas = snd_kcontrol_chip(kcontrol); 500 501 mutex_lock(&tas->mtx); 502 ucontrol->value.enumerated.item[0] = !!(tas->acr & TAS_ACR_INPUT_B); 503 mutex_unlock(&tas->mtx); 504 return 0; 505} 506 507static int tas_snd_capture_source_put(struct snd_kcontrol *kcontrol, 508 struct snd_ctl_elem_value *ucontrol) 509{ 510 struct tas *tas = snd_kcontrol_chip(kcontrol); 511 int oldacr; 512 513 mutex_lock(&tas->mtx); 514 oldacr = tas->acr; 515 516 /* 517 * Despite what the data sheet says in one place, the 518 * TAS_ACR_B_MONAUREAL bit forces mono output even when 519 * input A (line in) is selected. 520 */ 521 tas->acr &= ~(TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL); 522 if (ucontrol->value.enumerated.item[0]) 523 tas->acr |= TAS_ACR_INPUT_B | TAS_ACR_B_MONAUREAL | 524 TAS_ACR_B_MON_SEL_RIGHT; 525 if (oldacr == tas->acr) { 526 mutex_unlock(&tas->mtx); 527 return 0; 528 } 529 if (tas->hw_enabled) 530 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr); 531 mutex_unlock(&tas->mtx); 532 return 1; 533} 534 535static struct snd_kcontrol_new capture_source_control = { 536 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 537 /* If we name this 'Input Source', it properly shows up in 538 * alsamixer as a selection, * but it's shown under the 539 * 'Playback' category. 540 * If I name it 'Capture Source', it shows up in strange 541 * ways (two bools of which one can be selected at a 542 * time) but at least it's shown in the 'Capture' 543 * category. 544 * I was told that this was due to backward compatibility, 545 * but I don't understand then why the mangling is *not* 546 * done when I name it "Input Source"..... 547 */ 548 .name = "Capture Source", 549 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 550 .info = tas_snd_capture_source_info, 551 .get = tas_snd_capture_source_get, 552 .put = tas_snd_capture_source_put, 553}; 554 555static int tas_snd_treble_info(struct snd_kcontrol *kcontrol, 556 struct snd_ctl_elem_info *uinfo) 557{ 558 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 559 uinfo->count = 1; 560 uinfo->value.integer.min = TAS3004_TREBLE_MIN; 561 uinfo->value.integer.max = TAS3004_TREBLE_MAX; 562 return 0; 563} 564 565static int tas_snd_treble_get(struct snd_kcontrol *kcontrol, 566 struct snd_ctl_elem_value *ucontrol) 567{ 568 struct tas *tas = snd_kcontrol_chip(kcontrol); 569 570 mutex_lock(&tas->mtx); 571 ucontrol->value.integer.value[0] = tas->treble; 572 mutex_unlock(&tas->mtx); 573 return 0; 574} 575 576static int tas_snd_treble_put(struct snd_kcontrol *kcontrol, 577 struct snd_ctl_elem_value *ucontrol) 578{ 579 struct tas *tas = snd_kcontrol_chip(kcontrol); 580 581 mutex_lock(&tas->mtx); 582 if (tas->treble == ucontrol->value.integer.value[0]) { 583 mutex_unlock(&tas->mtx); 584 return 0; 585 } 586 587 tas->treble = ucontrol->value.integer.value[0]; 588 if (tas->hw_enabled) 589 tas_set_treble(tas); 590 mutex_unlock(&tas->mtx); 591 return 1; 592} 593 594static struct snd_kcontrol_new treble_control = { 595 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 596 .name = "Treble", 597 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 598 .info = tas_snd_treble_info, 599 .get = tas_snd_treble_get, 600 .put = tas_snd_treble_put, 601}; 602 603static int tas_snd_bass_info(struct snd_kcontrol *kcontrol, 604 struct snd_ctl_elem_info *uinfo) 605{ 606 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 607 uinfo->count = 1; 608 uinfo->value.integer.min = TAS3004_BASS_MIN; 609 uinfo->value.integer.max = TAS3004_BASS_MAX; 610 return 0; 611} 612 613static int tas_snd_bass_get(struct snd_kcontrol *kcontrol, 614 struct snd_ctl_elem_value *ucontrol) 615{ 616 struct tas *tas = snd_kcontrol_chip(kcontrol); 617 618 mutex_lock(&tas->mtx); 619 ucontrol->value.integer.value[0] = tas->bass; 620 mutex_unlock(&tas->mtx); 621 return 0; 622} 623 624static int tas_snd_bass_put(struct snd_kcontrol *kcontrol, 625 struct snd_ctl_elem_value *ucontrol) 626{ 627 struct tas *tas = snd_kcontrol_chip(kcontrol); 628 629 mutex_lock(&tas->mtx); 630 if (tas->bass == ucontrol->value.integer.value[0]) { 631 mutex_unlock(&tas->mtx); 632 return 0; 633 } 634 635 tas->bass = ucontrol->value.integer.value[0]; 636 if (tas->hw_enabled) 637 tas_set_bass(tas); 638 mutex_unlock(&tas->mtx); 639 return 1; 640} 641 642static struct snd_kcontrol_new bass_control = { 643 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 644 .name = "Bass", 645 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 646 .info = tas_snd_bass_info, 647 .get = tas_snd_bass_get, 648 .put = tas_snd_bass_put, 649}; 650 651static struct transfer_info tas_transfers[] = { 652 { 653 /* input */ 654 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE | 655 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE, 656 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 657 .transfer_in = 1, 658 }, 659 { 660 /* output */ 661 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_BE | 662 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE, 663 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 664 .transfer_in = 0, 665 }, 666 {} 667}; 668 669static int tas_usable(struct codec_info_item *cii, 670 struct transfer_info *ti, 671 struct transfer_info *out) 672{ 673 return 1; 674} 675 676static int tas_reset_init(struct tas *tas) 677{ 678 u8 tmp; 679 680 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio); 681 msleep(5); 682 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0); 683 msleep(5); 684 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 1); 685 msleep(20); 686 tas->codec.gpio->methods->set_hw_reset(tas->codec.gpio, 0); 687 msleep(10); 688 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio); 689 690 tmp = TAS_MCS_SCLK64 | TAS_MCS_SPORT_MODE_I2S | TAS_MCS_SPORT_WL_24BIT; 691 if (tas_write_reg(tas, TAS_REG_MCS, 1, &tmp)) 692 goto outerr; 693 694 tas->acr |= TAS_ACR_ANALOG_PDOWN; 695 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr)) 696 goto outerr; 697 698 tmp = 0; 699 if (tas_write_reg(tas, TAS_REG_MCS2, 1, &tmp)) 700 goto outerr; 701 702 tas3004_set_drc(tas); 703 704 /* Set treble & bass to 0dB */ 705 tas->treble = TAS3004_TREBLE_ZERO; 706 tas->bass = TAS3004_BASS_ZERO; 707 tas_set_treble(tas); 708 tas_set_bass(tas); 709 710 tas->acr &= ~TAS_ACR_ANALOG_PDOWN; 711 if (tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr)) 712 goto outerr; 713 714 return 0; 715 outerr: 716 return -ENODEV; 717} 718 719static int tas_switch_clock(struct codec_info_item *cii, enum clock_switch clock) 720{ 721 struct tas *tas = cii->codec_data; 722 723 switch(clock) { 724 case CLOCK_SWITCH_PREPARE_SLAVE: 725 /* Clocks are going away, mute mute mute */ 726 tas->codec.gpio->methods->all_amps_off(tas->codec.gpio); 727 tas->hw_enabled = 0; 728 break; 729 case CLOCK_SWITCH_SLAVE: 730 /* Clocks are back, re-init the codec */ 731 mutex_lock(&tas->mtx); 732 tas_reset_init(tas); 733 tas_set_volume(tas); 734 tas_set_mixer(tas); 735 tas->hw_enabled = 1; 736 tas->codec.gpio->methods->all_amps_restore(tas->codec.gpio); 737 mutex_unlock(&tas->mtx); 738 break; 739 default: 740 /* doesn't happen as of now */ 741 return -EINVAL; 742 } 743 return 0; 744} 745 746/* we are controlled via i2c and assume that is always up 747 * If that wasn't the case, we'd have to suspend once 748 * our i2c device is suspended, and then take note of that! */ 749static int tas_suspend(struct tas *tas) 750{ 751 mutex_lock(&tas->mtx); 752 tas->hw_enabled = 0; 753 tas->acr |= TAS_ACR_ANALOG_PDOWN; 754 tas_write_reg(tas, TAS_REG_ACR, 1, &tas->acr); 755 mutex_unlock(&tas->mtx); 756 return 0; 757} 758 759static int tas_resume(struct tas *tas) 760{ 761 /* reset codec */ 762 mutex_lock(&tas->mtx); 763 tas_reset_init(tas); 764 tas_set_volume(tas); 765 tas_set_mixer(tas); 766 tas->hw_enabled = 1; 767 mutex_unlock(&tas->mtx); 768 return 0; 769} 770 771#ifdef CONFIG_PM 772static int _tas_suspend(struct codec_info_item *cii, pm_message_t state) 773{ 774 return tas_suspend(cii->codec_data); 775} 776 777static int _tas_resume(struct codec_info_item *cii) 778{ 779 return tas_resume(cii->codec_data); 780} 781#endif 782 783static struct codec_info tas_codec_info = { 784 .transfers = tas_transfers, 785 /* in theory, we can drive it at 512 too... 786 * but so far the framework doesn't allow 787 * for that and I don't see much point in it. */ 788 .sysclock_factor = 256, 789 /* same here, could be 32 for just one 16 bit format */ 790 .bus_factor = 64, 791 .owner = THIS_MODULE, 792 .usable = tas_usable, 793 .switch_clock = tas_switch_clock, 794#ifdef CONFIG_PM 795 .suspend = _tas_suspend, 796 .resume = _tas_resume, 797#endif 798}; 799 800static int tas_init_codec(struct aoa_codec *codec) 801{ 802 struct tas *tas = codec_to_tas(codec); 803 int err; 804 805 if (!tas->codec.gpio || !tas->codec.gpio->methods) { 806 printk(KERN_ERR PFX "gpios not assigned!!\n"); 807 return -EINVAL; 808 } 809 810 mutex_lock(&tas->mtx); 811 if (tas_reset_init(tas)) { 812 printk(KERN_ERR PFX "tas failed to initialise\n"); 813 mutex_unlock(&tas->mtx); 814 return -ENXIO; 815 } 816 tas->hw_enabled = 1; 817 mutex_unlock(&tas->mtx); 818 819 if (tas->codec.soundbus_dev->attach_codec(tas->codec.soundbus_dev, 820 aoa_get_card(), 821 &tas_codec_info, tas)) { 822 printk(KERN_ERR PFX "error attaching tas to soundbus\n"); 823 return -ENODEV; 824 } 825 826 if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, tas, &ops)) { 827 printk(KERN_ERR PFX "failed to create tas snd device!\n"); 828 return -ENODEV; 829 } 830 err = aoa_snd_ctl_add(snd_ctl_new1(&volume_control, tas)); 831 if (err) 832 goto error; 833 834 err = aoa_snd_ctl_add(snd_ctl_new1(&mute_control, tas)); 835 if (err) 836 goto error; 837 838 err = aoa_snd_ctl_add(snd_ctl_new1(&pcm1_control, tas)); 839 if (err) 840 goto error; 841 842 err = aoa_snd_ctl_add(snd_ctl_new1(&monitor_control, tas)); 843 if (err) 844 goto error; 845 846 err = aoa_snd_ctl_add(snd_ctl_new1(&capture_source_control, tas)); 847 if (err) 848 goto error; 849 850 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_range_control, tas)); 851 if (err) 852 goto error; 853 854 err = aoa_snd_ctl_add(snd_ctl_new1(&drc_switch_control, tas)); 855 if (err) 856 goto error; 857 858 err = aoa_snd_ctl_add(snd_ctl_new1(&treble_control, tas)); 859 if (err) 860 goto error; 861 862 err = aoa_snd_ctl_add(snd_ctl_new1(&bass_control, tas)); 863 if (err) 864 goto error; 865 866 return 0; 867 error: 868 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas); 869 snd_device_free(aoa_get_card(), tas); 870 return err; 871} 872 873static void tas_exit_codec(struct aoa_codec *codec) 874{ 875 struct tas *tas = codec_to_tas(codec); 876 877 if (!tas->codec.soundbus_dev) 878 return; 879 tas->codec.soundbus_dev->detach_codec(tas->codec.soundbus_dev, tas); 880} 881 882 883static struct i2c_driver tas_driver; 884 885static int tas_create(struct i2c_adapter *adapter, 886 struct device_node *node, 887 int addr) 888{ 889 struct tas *tas; 890 891 tas = kzalloc(sizeof(struct tas), GFP_KERNEL); 892 893 if (!tas) 894 return -ENOMEM; 895 896 mutex_init(&tas->mtx); 897 tas->i2c.driver = &tas_driver; 898 tas->i2c.adapter = adapter; 899 tas->i2c.addr = addr; 900 /* seems that half is a saner default */ 901 tas->drc_range = TAS3004_DRC_MAX / 2; 902 strlcpy(tas->i2c.name, "tas audio codec", I2C_NAME_SIZE); 903 904 if (i2c_attach_client(&tas->i2c)) { 905 printk(KERN_ERR PFX "failed to attach to i2c\n"); 906 goto fail; 907 } 908 909 strlcpy(tas->codec.name, "tas", MAX_CODEC_NAME_LEN); 910 tas->codec.owner = THIS_MODULE; 911 tas->codec.init = tas_init_codec; 912 tas->codec.exit = tas_exit_codec; 913 tas->codec.node = of_node_get(node); 914 915 if (aoa_codec_register(&tas->codec)) { 916 goto detach; 917 } 918 printk(KERN_DEBUG 919 "snd-aoa-codec-tas: tas found, addr 0x%02x on %s\n", 920 addr, node->full_name); 921 return 0; 922 detach: 923 i2c_detach_client(&tas->i2c); 924 fail: 925 mutex_destroy(&tas->mtx); 926 kfree(tas); 927 return -EINVAL; 928} 929 930static int tas_i2c_attach(struct i2c_adapter *adapter) 931{ 932 struct device_node *busnode, *dev = NULL; 933 struct pmac_i2c_bus *bus; 934 935 bus = pmac_i2c_adapter_to_bus(adapter); 936 if (bus == NULL) 937 return -ENODEV; 938 busnode = pmac_i2c_get_bus_node(bus); 939 940 while ((dev = of_get_next_child(busnode, dev)) != NULL) { 941 if (of_device_is_compatible(dev, "tas3004")) { 942 const u32 *addr; 943 printk(KERN_DEBUG PFX "found tas3004\n"); 944 addr = of_get_property(dev, "reg", NULL); 945 if (!addr) 946 continue; 947 return tas_create(adapter, dev, ((*addr) >> 1) & 0x7f); 948 } 949 /* older machines have no 'codec' node with a 'compatible' 950 * property that says 'tas3004', they just have a 'deq' 951 * node without any such property... */ 952 if (strcmp(dev->name, "deq") == 0) { 953 const u32 *_addr; 954 u32 addr; 955 printk(KERN_DEBUG PFX "found 'deq' node\n"); 956 _addr = of_get_property(dev, "i2c-address", NULL); 957 if (!_addr) 958 continue; 959 addr = ((*_addr) >> 1) & 0x7f; 960 /* now, if the address doesn't match any of the two 961 * that a tas3004 can have, we cannot handle this. 962 * I doubt it ever happens but hey. */ 963 if (addr != 0x34 && addr != 0x35) 964 continue; 965 return tas_create(adapter, dev, addr); 966 } 967 } 968 return -ENODEV; 969} 970 971static int tas_i2c_detach(struct i2c_client *client) 972{ 973 struct tas *tas = container_of(client, struct tas, i2c); 974 int err; 975 u8 tmp = TAS_ACR_ANALOG_PDOWN; 976 977 if ((err = i2c_detach_client(client))) 978 return err; 979 aoa_codec_unregister(&tas->codec); 980 of_node_put(tas->codec.node); 981 982 /* power down codec chip */ 983 tas_write_reg(tas, TAS_REG_ACR, 1, &tmp); 984 985 mutex_destroy(&tas->mtx); 986 kfree(tas); 987 return 0; 988} 989 990static struct i2c_driver tas_driver = { 991 .driver = { 992 .name = "aoa_codec_tas", 993 .owner = THIS_MODULE, 994 }, 995 .attach_adapter = tas_i2c_attach, 996 .detach_client = tas_i2c_detach, 997}; 998 999static int __init tas_init(void) 1000{ 1001 return i2c_add_driver(&tas_driver); 1002} 1003 1004static void __exit tas_exit(void) 1005{ 1006 i2c_del_driver(&tas_driver); 1007} 1008 1009module_init(tas_init); 1010module_exit(tas_exit); 1011