1 /* 2 * Apple Onboard Audio driver for Onyx codec 3 * 4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * GPL v2, can be found in COPYING. 7 * 8 * 9 * This is a driver for the pcm3052 codec chip (codenamed Onyx) 10 * that is present in newer Apple hardware (with digital output). 11 * 12 * The Onyx codec has the following connections (listed by the bit 13 * to be used in aoa_codec.connected): 14 * 0: analog output 15 * 1: digital output 16 * 2: line input 17 * 3: microphone input 18 * Note that even though I know of no machine that has for example 19 * the digital output connected but not the analog, I have handled 20 * all the different cases in the code so that this driver may serve 21 * as a good example of what to do. 22 * 23 * NOTE: This driver assumes that there's at most one chip to be 24 * used with one alsa card, in form of creating all kinds 25 * of mixer elements without regard for their existence. 26 * But snd-aoa assumes that there's at most one card, so 27 * this means you can only have one onyx on a system. This 28 * should probably be fixed by changing the assumption of 29 * having just a single card on a system, and making the 30 * 'card' pointer accessible to anyone who needs it instead 31 * of hiding it in the aoa_snd_* functions... 32 * 33 */ 34 #include <linux/delay.h> 35 #include <linux/module.h> 36 #include <linux/slab.h> 37 MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); 38 MODULE_LICENSE("GPL"); 39 MODULE_DESCRIPTION("pcm3052 (onyx) codec driver for snd-aoa"); 40 41 #include "onyx.h" 42 #include "../aoa.h" 43 #include "../soundbus/soundbus.h" 44 45 46 #define PFX "snd-aoa-codec-onyx: " 47 48 struct onyx { 49 /* cache registers 65 to 80, they are write-only! */ 50 u8 cache[16]; 51 struct i2c_client *i2c; 52 struct aoa_codec codec; 53 u32 initialised:1, 54 spdif_locked:1, 55 analog_locked:1, 56 original_mute:2; 57 int open_count; 58 struct codec_info *codec_info; 59 60 /* mutex serializes concurrent access to the device 61 * and this structure. 62 */ 63 struct mutex mutex; 64 }; 65 #define codec_to_onyx(c) container_of(c, struct onyx, codec) 66 67 /* both return 0 if all ok, else on error */ 68 static int onyx_read_register(struct onyx *onyx, u8 reg, u8 *value) 69 { 70 s32 v; 71 72 if (reg != ONYX_REG_CONTROL) { 73 *value = onyx->cache[reg-FIRSTREGISTER]; 74 return 0; 75 } 76 v = i2c_smbus_read_byte_data(onyx->i2c, reg); 77 if (v < 0) 78 return -1; 79 *value = (u8)v; 80 onyx->cache[ONYX_REG_CONTROL-FIRSTREGISTER] = *value; 81 return 0; 82 } 83 84 static int onyx_write_register(struct onyx *onyx, u8 reg, u8 value) 85 { 86 int result; 87 88 result = i2c_smbus_write_byte_data(onyx->i2c, reg, value); 89 if (!result) 90 onyx->cache[reg-FIRSTREGISTER] = value; 91 return result; 92 } 93 94 /* alsa stuff */ 95 96 static int onyx_dev_register(struct snd_device *dev) 97 { 98 return 0; 99 } 100 101 static struct snd_device_ops ops = { 102 .dev_register = onyx_dev_register, 103 }; 104 105 /* this is necessary because most alsa mixer programs 106 * can't properly handle the negative range */ 107 #define VOLUME_RANGE_SHIFT 128 108 109 static int onyx_snd_vol_info(struct snd_kcontrol *kcontrol, 110 struct snd_ctl_elem_info *uinfo) 111 { 112 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 113 uinfo->count = 2; 114 uinfo->value.integer.min = -128 + VOLUME_RANGE_SHIFT; 115 uinfo->value.integer.max = -1 + VOLUME_RANGE_SHIFT; 116 return 0; 117 } 118 119 static int onyx_snd_vol_get(struct snd_kcontrol *kcontrol, 120 struct snd_ctl_elem_value *ucontrol) 121 { 122 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 123 s8 l, r; 124 125 mutex_lock(&onyx->mutex); 126 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, &l); 127 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, &r); 128 mutex_unlock(&onyx->mutex); 129 130 ucontrol->value.integer.value[0] = l + VOLUME_RANGE_SHIFT; 131 ucontrol->value.integer.value[1] = r + VOLUME_RANGE_SHIFT; 132 133 return 0; 134 } 135 136 static int onyx_snd_vol_put(struct snd_kcontrol *kcontrol, 137 struct snd_ctl_elem_value *ucontrol) 138 { 139 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 140 s8 l, r; 141 142 if (ucontrol->value.integer.value[0] < -128 + VOLUME_RANGE_SHIFT || 143 ucontrol->value.integer.value[0] > -1 + VOLUME_RANGE_SHIFT) 144 return -EINVAL; 145 if (ucontrol->value.integer.value[1] < -128 + VOLUME_RANGE_SHIFT || 146 ucontrol->value.integer.value[1] > -1 + VOLUME_RANGE_SHIFT) 147 return -EINVAL; 148 149 mutex_lock(&onyx->mutex); 150 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, &l); 151 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, &r); 152 153 if (l + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[0] && 154 r + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[1]) { 155 mutex_unlock(&onyx->mutex); 156 return 0; 157 } 158 159 onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, 160 ucontrol->value.integer.value[0] 161 - VOLUME_RANGE_SHIFT); 162 onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, 163 ucontrol->value.integer.value[1] 164 - VOLUME_RANGE_SHIFT); 165 mutex_unlock(&onyx->mutex); 166 167 return 1; 168 } 169 170 static struct snd_kcontrol_new volume_control = { 171 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 172 .name = "Master Playback Volume", 173 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 174 .info = onyx_snd_vol_info, 175 .get = onyx_snd_vol_get, 176 .put = onyx_snd_vol_put, 177 }; 178 179 /* like above, this is necessary because a lot 180 * of alsa mixer programs don't handle ranges 181 * that don't start at 0 properly. 182 * even alsamixer is one of them... */ 183 #define INPUTGAIN_RANGE_SHIFT (-3) 184 185 static int onyx_snd_inputgain_info(struct snd_kcontrol *kcontrol, 186 struct snd_ctl_elem_info *uinfo) 187 { 188 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 189 uinfo->count = 1; 190 uinfo->value.integer.min = 3 + INPUTGAIN_RANGE_SHIFT; 191 uinfo->value.integer.max = 28 + INPUTGAIN_RANGE_SHIFT; 192 return 0; 193 } 194 195 static int onyx_snd_inputgain_get(struct snd_kcontrol *kcontrol, 196 struct snd_ctl_elem_value *ucontrol) 197 { 198 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 199 u8 ig; 200 201 mutex_lock(&onyx->mutex); 202 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &ig); 203 mutex_unlock(&onyx->mutex); 204 205 ucontrol->value.integer.value[0] = 206 (ig & ONYX_ADC_PGA_GAIN_MASK) + INPUTGAIN_RANGE_SHIFT; 207 208 return 0; 209 } 210 211 static int onyx_snd_inputgain_put(struct snd_kcontrol *kcontrol, 212 struct snd_ctl_elem_value *ucontrol) 213 { 214 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 215 u8 v, n; 216 217 if (ucontrol->value.integer.value[0] < 3 + INPUTGAIN_RANGE_SHIFT || 218 ucontrol->value.integer.value[0] > 28 + INPUTGAIN_RANGE_SHIFT) 219 return -EINVAL; 220 mutex_lock(&onyx->mutex); 221 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v); 222 n = v; 223 n &= ~ONYX_ADC_PGA_GAIN_MASK; 224 n |= (ucontrol->value.integer.value[0] - INPUTGAIN_RANGE_SHIFT) 225 & ONYX_ADC_PGA_GAIN_MASK; 226 onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, n); 227 mutex_unlock(&onyx->mutex); 228 229 return n != v; 230 } 231 232 static struct snd_kcontrol_new inputgain_control = { 233 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 234 .name = "Master Capture Volume", 235 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 236 .info = onyx_snd_inputgain_info, 237 .get = onyx_snd_inputgain_get, 238 .put = onyx_snd_inputgain_put, 239 }; 240 241 static int onyx_snd_capture_source_info(struct snd_kcontrol *kcontrol, 242 struct snd_ctl_elem_info *uinfo) 243 { 244 static char *texts[] = { "Line-In", "Microphone" }; 245 246 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 247 uinfo->count = 1; 248 uinfo->value.enumerated.items = 2; 249 if (uinfo->value.enumerated.item > 1) 250 uinfo->value.enumerated.item = 1; 251 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]); 252 return 0; 253 } 254 255 static int onyx_snd_capture_source_get(struct snd_kcontrol *kcontrol, 256 struct snd_ctl_elem_value *ucontrol) 257 { 258 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 259 s8 v; 260 261 mutex_lock(&onyx->mutex); 262 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v); 263 mutex_unlock(&onyx->mutex); 264 265 ucontrol->value.enumerated.item[0] = !!(v&ONYX_ADC_INPUT_MIC); 266 267 return 0; 268 } 269 270 static void onyx_set_capture_source(struct onyx *onyx, int mic) 271 { 272 s8 v; 273 274 mutex_lock(&onyx->mutex); 275 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v); 276 v &= ~ONYX_ADC_INPUT_MIC; 277 if (mic) 278 v |= ONYX_ADC_INPUT_MIC; 279 onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, v); 280 mutex_unlock(&onyx->mutex); 281 } 282 283 static int onyx_snd_capture_source_put(struct snd_kcontrol *kcontrol, 284 struct snd_ctl_elem_value *ucontrol) 285 { 286 if (ucontrol->value.enumerated.item[0] > 1) 287 return -EINVAL; 288 onyx_set_capture_source(snd_kcontrol_chip(kcontrol), 289 ucontrol->value.enumerated.item[0]); 290 return 1; 291 } 292 293 static struct snd_kcontrol_new capture_source_control = { 294 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 295 /* If we name this 'Input Source', it properly shows up in 296 * alsamixer as a selection, * but it's shown under the 297 * 'Playback' category. 298 * If I name it 'Capture Source', it shows up in strange 299 * ways (two bools of which one can be selected at a 300 * time) but at least it's shown in the 'Capture' 301 * category. 302 * I was told that this was due to backward compatibility, 303 * but I don't understand then why the mangling is *not* 304 * done when I name it "Input Source"..... 305 */ 306 .name = "Capture Source", 307 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 308 .info = onyx_snd_capture_source_info, 309 .get = onyx_snd_capture_source_get, 310 .put = onyx_snd_capture_source_put, 311 }; 312 313 #define onyx_snd_mute_info snd_ctl_boolean_stereo_info 314 315 static int onyx_snd_mute_get(struct snd_kcontrol *kcontrol, 316 struct snd_ctl_elem_value *ucontrol) 317 { 318 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 319 u8 c; 320 321 mutex_lock(&onyx->mutex); 322 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &c); 323 mutex_unlock(&onyx->mutex); 324 325 ucontrol->value.integer.value[0] = !(c & ONYX_MUTE_LEFT); 326 ucontrol->value.integer.value[1] = !(c & ONYX_MUTE_RIGHT); 327 328 return 0; 329 } 330 331 static int onyx_snd_mute_put(struct snd_kcontrol *kcontrol, 332 struct snd_ctl_elem_value *ucontrol) 333 { 334 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 335 u8 v = 0, c = 0; 336 int err = -EBUSY; 337 338 mutex_lock(&onyx->mutex); 339 if (onyx->analog_locked) 340 goto out_unlock; 341 342 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v); 343 c = v; 344 c &= ~(ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT); 345 if (!ucontrol->value.integer.value[0]) 346 c |= ONYX_MUTE_LEFT; 347 if (!ucontrol->value.integer.value[1]) 348 c |= ONYX_MUTE_RIGHT; 349 err = onyx_write_register(onyx, ONYX_REG_DAC_CONTROL, c); 350 351 out_unlock: 352 mutex_unlock(&onyx->mutex); 353 354 return !err ? (v != c) : err; 355 } 356 357 static struct snd_kcontrol_new mute_control = { 358 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 359 .name = "Master Playback Switch", 360 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 361 .info = onyx_snd_mute_info, 362 .get = onyx_snd_mute_get, 363 .put = onyx_snd_mute_put, 364 }; 365 366 367 #define onyx_snd_single_bit_info snd_ctl_boolean_mono_info 368 369 #define FLAG_POLARITY_INVERT 1 370 #define FLAG_SPDIFLOCK 2 371 372 static int onyx_snd_single_bit_get(struct snd_kcontrol *kcontrol, 373 struct snd_ctl_elem_value *ucontrol) 374 { 375 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 376 u8 c; 377 long int pv = kcontrol->private_value; 378 u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT; 379 u8 address = (pv >> 8) & 0xff; 380 u8 mask = pv & 0xff; 381 382 mutex_lock(&onyx->mutex); 383 onyx_read_register(onyx, address, &c); 384 mutex_unlock(&onyx->mutex); 385 386 ucontrol->value.integer.value[0] = !!(c & mask) ^ polarity; 387 388 return 0; 389 } 390 391 static int onyx_snd_single_bit_put(struct snd_kcontrol *kcontrol, 392 struct snd_ctl_elem_value *ucontrol) 393 { 394 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 395 u8 v = 0, c = 0; 396 int err; 397 long int pv = kcontrol->private_value; 398 u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT; 399 u8 spdiflock = (pv >> 16) & FLAG_SPDIFLOCK; 400 u8 address = (pv >> 8) & 0xff; 401 u8 mask = pv & 0xff; 402 403 mutex_lock(&onyx->mutex); 404 if (spdiflock && onyx->spdif_locked) { 405 /* even if alsamixer doesn't care.. */ 406 err = -EBUSY; 407 goto out_unlock; 408 } 409 onyx_read_register(onyx, address, &v); 410 c = v; 411 c &= ~(mask); 412 if (!!ucontrol->value.integer.value[0] ^ polarity) 413 c |= mask; 414 err = onyx_write_register(onyx, address, c); 415 416 out_unlock: 417 mutex_unlock(&onyx->mutex); 418 419 return !err ? (v != c) : err; 420 } 421 422 #define SINGLE_BIT(n, type, description, address, mask, flags) \ 423 static struct snd_kcontrol_new n##_control = { \ 424 .iface = SNDRV_CTL_ELEM_IFACE_##type, \ 425 .name = description, \ 426 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 427 .info = onyx_snd_single_bit_info, \ 428 .get = onyx_snd_single_bit_get, \ 429 .put = onyx_snd_single_bit_put, \ 430 .private_value = (flags << 16) | (address << 8) | mask \ 431 } 432 433 SINGLE_BIT(spdif, 434 MIXER, 435 SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH), 436 ONYX_REG_DIG_INFO4, 437 ONYX_SPDIF_ENABLE, 438 FLAG_SPDIFLOCK); 439 SINGLE_BIT(ovr1, 440 MIXER, 441 "Oversampling Rate", 442 ONYX_REG_DAC_CONTROL, 443 ONYX_OVR1, 444 0); 445 SINGLE_BIT(flt0, 446 MIXER, 447 "Fast Digital Filter Rolloff", 448 ONYX_REG_DAC_FILTER, 449 ONYX_ROLLOFF_FAST, 450 FLAG_POLARITY_INVERT); 451 SINGLE_BIT(hpf, 452 MIXER, 453 "Highpass Filter", 454 ONYX_REG_ADC_HPF_BYPASS, 455 ONYX_HPF_DISABLE, 456 FLAG_POLARITY_INVERT); 457 SINGLE_BIT(dm12, 458 MIXER, 459 "Digital De-Emphasis", 460 ONYX_REG_DAC_DEEMPH, 461 ONYX_DIGDEEMPH_CTRL, 462 0); 463 464 static int onyx_spdif_info(struct snd_kcontrol *kcontrol, 465 struct snd_ctl_elem_info *uinfo) 466 { 467 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 468 uinfo->count = 1; 469 return 0; 470 } 471 472 static int onyx_spdif_mask_get(struct snd_kcontrol *kcontrol, 473 struct snd_ctl_elem_value *ucontrol) 474 { 475 /* datasheet page 30, all others are 0 */ 476 ucontrol->value.iec958.status[0] = 0x3e; 477 ucontrol->value.iec958.status[1] = 0xff; 478 479 ucontrol->value.iec958.status[3] = 0x3f; 480 ucontrol->value.iec958.status[4] = 0x0f; 481 482 return 0; 483 } 484 485 static struct snd_kcontrol_new onyx_spdif_mask = { 486 .access = SNDRV_CTL_ELEM_ACCESS_READ, 487 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 488 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK), 489 .info = onyx_spdif_info, 490 .get = onyx_spdif_mask_get, 491 }; 492 493 static int onyx_spdif_get(struct snd_kcontrol *kcontrol, 494 struct snd_ctl_elem_value *ucontrol) 495 { 496 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 497 u8 v; 498 499 mutex_lock(&onyx->mutex); 500 onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v); 501 ucontrol->value.iec958.status[0] = v & 0x3e; 502 503 onyx_read_register(onyx, ONYX_REG_DIG_INFO2, &v); 504 ucontrol->value.iec958.status[1] = v; 505 506 onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v); 507 ucontrol->value.iec958.status[3] = v & 0x3f; 508 509 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v); 510 ucontrol->value.iec958.status[4] = v & 0x0f; 511 mutex_unlock(&onyx->mutex); 512 513 return 0; 514 } 515 516 static int onyx_spdif_put(struct snd_kcontrol *kcontrol, 517 struct snd_ctl_elem_value *ucontrol) 518 { 519 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 520 u8 v; 521 522 mutex_lock(&onyx->mutex); 523 onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v); 524 v = (v & ~0x3e) | (ucontrol->value.iec958.status[0] & 0x3e); 525 onyx_write_register(onyx, ONYX_REG_DIG_INFO1, v); 526 527 v = ucontrol->value.iec958.status[1]; 528 onyx_write_register(onyx, ONYX_REG_DIG_INFO2, v); 529 530 onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v); 531 v = (v & ~0x3f) | (ucontrol->value.iec958.status[3] & 0x3f); 532 onyx_write_register(onyx, ONYX_REG_DIG_INFO3, v); 533 534 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v); 535 v = (v & ~0x0f) | (ucontrol->value.iec958.status[4] & 0x0f); 536 onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v); 537 mutex_unlock(&onyx->mutex); 538 539 return 1; 540 } 541 542 static struct snd_kcontrol_new onyx_spdif_ctrl = { 543 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 544 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 545 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT), 546 .info = onyx_spdif_info, 547 .get = onyx_spdif_get, 548 .put = onyx_spdif_put, 549 }; 550 551 /* our registers */ 552 553 static u8 register_map[] = { 554 ONYX_REG_DAC_ATTEN_LEFT, 555 ONYX_REG_DAC_ATTEN_RIGHT, 556 ONYX_REG_CONTROL, 557 ONYX_REG_DAC_CONTROL, 558 ONYX_REG_DAC_DEEMPH, 559 ONYX_REG_DAC_FILTER, 560 ONYX_REG_DAC_OUTPHASE, 561 ONYX_REG_ADC_CONTROL, 562 ONYX_REG_ADC_HPF_BYPASS, 563 ONYX_REG_DIG_INFO1, 564 ONYX_REG_DIG_INFO2, 565 ONYX_REG_DIG_INFO3, 566 ONYX_REG_DIG_INFO4 567 }; 568 569 static u8 initial_values[ARRAY_SIZE(register_map)] = { 570 0x80, 0x80, /* muted */ 571 ONYX_MRST | ONYX_SRST, /* but handled specially! */ 572 ONYX_MUTE_LEFT | ONYX_MUTE_RIGHT, 573 0, /* no deemphasis */ 574 ONYX_DAC_FILTER_ALWAYS, 575 ONYX_OUTPHASE_INVERTED, 576 (-1 /*dB*/ + 8) & 0xF, /* line in selected, -1 dB gain*/ 577 ONYX_ADC_HPF_ALWAYS, 578 (1<<2), /* pcm audio */ 579 2, /* category: pcm coder */ 580 0, /* sampling frequency 44.1 kHz, clock accuracy level II */ 581 1 /* 24 bit depth */ 582 }; 583 584 /* reset registers of chip, either to initial or to previous values */ 585 static int onyx_register_init(struct onyx *onyx) 586 { 587 int i; 588 u8 val; 589 u8 regs[sizeof(initial_values)]; 590 591 if (!onyx->initialised) { 592 memcpy(regs, initial_values, sizeof(initial_values)); 593 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &val)) 594 return -1; 595 val &= ~ONYX_SILICONVERSION; 596 val |= initial_values[3]; 597 regs[3] = val; 598 } else { 599 for (i=0; i<sizeof(register_map); i++) 600 regs[i] = onyx->cache[register_map[i]-FIRSTREGISTER]; 601 } 602 603 for (i=0; i<sizeof(register_map); i++) { 604 if (onyx_write_register(onyx, register_map[i], regs[i])) 605 return -1; 606 } 607 onyx->initialised = 1; 608 return 0; 609 } 610 611 static struct transfer_info onyx_transfers[] = { 612 /* this is first so we can skip it if no input is present... 613 * No hardware exists with that, but it's here as an example 614 * of what to do :) */ 615 { 616 /* analog input */ 617 .formats = SNDRV_PCM_FMTBIT_S8 | 618 SNDRV_PCM_FMTBIT_S16_BE | 619 SNDRV_PCM_FMTBIT_S24_BE, 620 .rates = SNDRV_PCM_RATE_8000_96000, 621 .transfer_in = 1, 622 .must_be_clock_source = 0, 623 .tag = 0, 624 }, 625 { 626 /* if analog and digital are currently off, anything should go, 627 * so this entry describes everything we can do... */ 628 .formats = SNDRV_PCM_FMTBIT_S8 | 629 SNDRV_PCM_FMTBIT_S16_BE | 630 SNDRV_PCM_FMTBIT_S24_BE 631 #ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE 632 | SNDRV_PCM_FMTBIT_COMPRESSED_16BE 633 #endif 634 , 635 .rates = SNDRV_PCM_RATE_8000_96000, 636 .tag = 0, 637 }, 638 { 639 /* analog output */ 640 .formats = SNDRV_PCM_FMTBIT_S8 | 641 SNDRV_PCM_FMTBIT_S16_BE | 642 SNDRV_PCM_FMTBIT_S24_BE, 643 .rates = SNDRV_PCM_RATE_8000_96000, 644 .transfer_in = 0, 645 .must_be_clock_source = 0, 646 .tag = 1, 647 }, 648 { 649 /* digital pcm output, also possible for analog out */ 650 .formats = SNDRV_PCM_FMTBIT_S8 | 651 SNDRV_PCM_FMTBIT_S16_BE | 652 SNDRV_PCM_FMTBIT_S24_BE, 653 .rates = SNDRV_PCM_RATE_32000 | 654 SNDRV_PCM_RATE_44100 | 655 SNDRV_PCM_RATE_48000, 656 .transfer_in = 0, 657 .must_be_clock_source = 0, 658 .tag = 2, 659 }, 660 #ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE 661 /* Once alsa gets supports for this kind of thing we can add it... */ 662 { 663 /* digital compressed output */ 664 .formats = SNDRV_PCM_FMTBIT_COMPRESSED_16BE, 665 .rates = SNDRV_PCM_RATE_32000 | 666 SNDRV_PCM_RATE_44100 | 667 SNDRV_PCM_RATE_48000, 668 .tag = 2, 669 }, 670 #endif 671 {} 672 }; 673 674 static int onyx_usable(struct codec_info_item *cii, 675 struct transfer_info *ti, 676 struct transfer_info *out) 677 { 678 u8 v; 679 struct onyx *onyx = cii->codec_data; 680 int spdif_enabled, analog_enabled; 681 682 mutex_lock(&onyx->mutex); 683 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v); 684 spdif_enabled = !!(v & ONYX_SPDIF_ENABLE); 685 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v); 686 analog_enabled = 687 (v & (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT)) 688 != (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT); 689 mutex_unlock(&onyx->mutex); 690 691 switch (ti->tag) { 692 case 0: return 1; 693 case 1: return analog_enabled; 694 case 2: return spdif_enabled; 695 } 696 return 1; 697 } 698 699 static int onyx_prepare(struct codec_info_item *cii, 700 struct bus_info *bi, 701 struct snd_pcm_substream *substream) 702 { 703 u8 v; 704 struct onyx *onyx = cii->codec_data; 705 int err = -EBUSY; 706 707 mutex_lock(&onyx->mutex); 708 709 #ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE 710 if (substream->runtime->format == SNDRV_PCM_FMTBIT_COMPRESSED_16BE) { 711 /* mute and lock analog output */ 712 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v); 713 if (onyx_write_register(onyx, 714 ONYX_REG_DAC_CONTROL, 715 v | ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT)) 716 goto out_unlock; 717 onyx->analog_locked = 1; 718 err = 0; 719 goto out_unlock; 720 } 721 #endif 722 switch (substream->runtime->rate) { 723 case 32000: 724 case 44100: 725 case 48000: 726 /* these rates are ok for all outputs */ 727 /* FIXME: program spdif channel control bits here so that 728 * userspace doesn't have to if it only plays pcm! */ 729 err = 0; 730 goto out_unlock; 731 default: 732 /* got some rate that the digital output can't do, 733 * so disable and lock it */ 734 onyx_read_register(cii->codec_data, ONYX_REG_DIG_INFO4, &v); 735 if (onyx_write_register(onyx, 736 ONYX_REG_DIG_INFO4, 737 v & ~ONYX_SPDIF_ENABLE)) 738 goto out_unlock; 739 onyx->spdif_locked = 1; 740 err = 0; 741 goto out_unlock; 742 } 743 744 out_unlock: 745 mutex_unlock(&onyx->mutex); 746 747 return err; 748 } 749 750 static int onyx_open(struct codec_info_item *cii, 751 struct snd_pcm_substream *substream) 752 { 753 struct onyx *onyx = cii->codec_data; 754 755 mutex_lock(&onyx->mutex); 756 onyx->open_count++; 757 mutex_unlock(&onyx->mutex); 758 759 return 0; 760 } 761 762 static int onyx_close(struct codec_info_item *cii, 763 struct snd_pcm_substream *substream) 764 { 765 struct onyx *onyx = cii->codec_data; 766 767 mutex_lock(&onyx->mutex); 768 onyx->open_count--; 769 if (!onyx->open_count) 770 onyx->spdif_locked = onyx->analog_locked = 0; 771 mutex_unlock(&onyx->mutex); 772 773 return 0; 774 } 775 776 static int onyx_switch_clock(struct codec_info_item *cii, 777 enum clock_switch what) 778 { 779 struct onyx *onyx = cii->codec_data; 780 781 mutex_lock(&onyx->mutex); 782 /* this *MUST* be more elaborate later... */ 783 switch (what) { 784 case CLOCK_SWITCH_PREPARE_SLAVE: 785 onyx->codec.gpio->methods->all_amps_off(onyx->codec.gpio); 786 break; 787 case CLOCK_SWITCH_SLAVE: 788 onyx->codec.gpio->methods->all_amps_restore(onyx->codec.gpio); 789 break; 790 default: /* silence warning */ 791 break; 792 } 793 mutex_unlock(&onyx->mutex); 794 795 return 0; 796 } 797 798 #ifdef CONFIG_PM 799 800 static int onyx_suspend(struct codec_info_item *cii, pm_message_t state) 801 { 802 struct onyx *onyx = cii->codec_data; 803 u8 v; 804 int err = -ENXIO; 805 806 mutex_lock(&onyx->mutex); 807 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v)) 808 goto out_unlock; 809 onyx_write_register(onyx, ONYX_REG_CONTROL, v | ONYX_ADPSV | ONYX_DAPSV); 810 /* Apple does a sleep here but the datasheet says to do it on resume */ 811 err = 0; 812 out_unlock: 813 mutex_unlock(&onyx->mutex); 814 815 return err; 816 } 817 818 static int onyx_resume(struct codec_info_item *cii) 819 { 820 struct onyx *onyx = cii->codec_data; 821 u8 v; 822 int err = -ENXIO; 823 824 mutex_lock(&onyx->mutex); 825 826 /* reset codec */ 827 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0); 828 msleep(1); 829 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 1); 830 msleep(1); 831 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0); 832 msleep(1); 833 834 /* take codec out of suspend (if it still is after reset) */ 835 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v)) 836 goto out_unlock; 837 onyx_write_register(onyx, ONYX_REG_CONTROL, v & ~(ONYX_ADPSV | ONYX_DAPSV)); 838 /* FIXME: should divide by sample rate, but 8k is the lowest we go */ 839 msleep(2205000/8000); 840 /* reset all values */ 841 onyx_register_init(onyx); 842 err = 0; 843 out_unlock: 844 mutex_unlock(&onyx->mutex); 845 846 return err; 847 } 848 849 #endif /* CONFIG_PM */ 850 851 static struct codec_info onyx_codec_info = { 852 .transfers = onyx_transfers, 853 .sysclock_factor = 256, 854 .bus_factor = 64, 855 .owner = THIS_MODULE, 856 .usable = onyx_usable, 857 .prepare = onyx_prepare, 858 .open = onyx_open, 859 .close = onyx_close, 860 .switch_clock = onyx_switch_clock, 861 #ifdef CONFIG_PM 862 .suspend = onyx_suspend, 863 .resume = onyx_resume, 864 #endif 865 }; 866 867 static int onyx_init_codec(struct aoa_codec *codec) 868 { 869 struct onyx *onyx = codec_to_onyx(codec); 870 struct snd_kcontrol *ctl; 871 struct codec_info *ci = &onyx_codec_info; 872 u8 v; 873 int err; 874 875 if (!onyx->codec.gpio || !onyx->codec.gpio->methods) { 876 printk(KERN_ERR PFX "gpios not assigned!!\n"); 877 return -EINVAL; 878 } 879 880 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0); 881 msleep(1); 882 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 1); 883 msleep(1); 884 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0); 885 msleep(1); 886 887 if (onyx_register_init(onyx)) { 888 printk(KERN_ERR PFX "failed to initialise onyx registers\n"); 889 return -ENODEV; 890 } 891 892 if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, onyx, &ops)) { 893 printk(KERN_ERR PFX "failed to create onyx snd device!\n"); 894 return -ENODEV; 895 } 896 897 /* nothing connected? what a joke! */ 898 if ((onyx->codec.connected & 0xF) == 0) 899 return -ENOTCONN; 900 901 /* if no inputs are present... */ 902 if ((onyx->codec.connected & 0xC) == 0) { 903 if (!onyx->codec_info) 904 onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL); 905 if (!onyx->codec_info) 906 return -ENOMEM; 907 ci = onyx->codec_info; 908 *ci = onyx_codec_info; 909 ci->transfers++; 910 } 911 912 /* if no outputs are present... */ 913 if ((onyx->codec.connected & 3) == 0) { 914 if (!onyx->codec_info) 915 onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL); 916 if (!onyx->codec_info) 917 return -ENOMEM; 918 ci = onyx->codec_info; 919 /* this is fine as there have to be inputs 920 * if we end up in this part of the code */ 921 *ci = onyx_codec_info; 922 ci->transfers[1].formats = 0; 923 } 924 925 if (onyx->codec.soundbus_dev->attach_codec(onyx->codec.soundbus_dev, 926 aoa_get_card(), 927 ci, onyx)) { 928 printk(KERN_ERR PFX "error creating onyx pcm\n"); 929 return -ENODEV; 930 } 931 #define ADDCTL(n) \ 932 do { \ 933 ctl = snd_ctl_new1(&n, onyx); \ 934 if (ctl) { \ 935 ctl->id.device = \ 936 onyx->codec.soundbus_dev->pcm->device; \ 937 err = aoa_snd_ctl_add(ctl); \ 938 if (err) \ 939 goto error; \ 940 } \ 941 } while (0) 942 943 if (onyx->codec.soundbus_dev->pcm) { 944 /* give the user appropriate controls 945 * depending on what inputs are connected */ 946 if ((onyx->codec.connected & 0xC) == 0xC) 947 ADDCTL(capture_source_control); 948 else if (onyx->codec.connected & 4) 949 onyx_set_capture_source(onyx, 0); 950 else 951 onyx_set_capture_source(onyx, 1); 952 if (onyx->codec.connected & 0xC) 953 ADDCTL(inputgain_control); 954 955 /* depending on what output is connected, 956 * give the user appropriate controls */ 957 if (onyx->codec.connected & 1) { 958 ADDCTL(volume_control); 959 ADDCTL(mute_control); 960 ADDCTL(ovr1_control); 961 ADDCTL(flt0_control); 962 ADDCTL(hpf_control); 963 ADDCTL(dm12_control); 964 /* spdif control defaults to off */ 965 } 966 if (onyx->codec.connected & 2) { 967 ADDCTL(onyx_spdif_mask); 968 ADDCTL(onyx_spdif_ctrl); 969 } 970 if ((onyx->codec.connected & 3) == 3) 971 ADDCTL(spdif_control); 972 /* if only S/PDIF is connected, enable it unconditionally */ 973 if ((onyx->codec.connected & 3) == 2) { 974 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v); 975 v |= ONYX_SPDIF_ENABLE; 976 onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v); 977 } 978 } 979 #undef ADDCTL 980 printk(KERN_INFO PFX "attached to onyx codec via i2c\n"); 981 982 return 0; 983 error: 984 onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx); 985 snd_device_free(aoa_get_card(), onyx); 986 return err; 987 } 988 989 static void onyx_exit_codec(struct aoa_codec *codec) 990 { 991 struct onyx *onyx = codec_to_onyx(codec); 992 993 if (!onyx->codec.soundbus_dev) { 994 printk(KERN_ERR PFX "onyx_exit_codec called without soundbus_dev!\n"); 995 return; 996 } 997 onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx); 998 } 999 1000 static int onyx_create(struct i2c_adapter *adapter, 1001 struct device_node *node, 1002 int addr) 1003 { 1004 struct i2c_board_info info; 1005 struct i2c_client *client; 1006 1007 memset(&info, 0, sizeof(struct i2c_board_info)); 1008 strlcpy(info.type, "aoa_codec_onyx", I2C_NAME_SIZE); 1009 info.addr = addr; 1010 info.platform_data = node; 1011 client = i2c_new_device(adapter, &info); 1012 if (!client) 1013 return -ENODEV; 1014 1015 /* 1016 * We know the driver is already loaded, so the device should be 1017 * already bound. If not it means binding failed, which suggests 1018 * the device doesn't really exist and should be deleted. 1019 * Ideally this would be replaced by better checks _before_ 1020 * instantiating the device. 1021 */ 1022 if (!client->driver) { 1023 i2c_unregister_device(client); 1024 return -ENODEV; 1025 } 1026 1027 /* 1028 * Let i2c-core delete that device on driver removal. 1029 * This is safe because i2c-core holds the core_lock mutex for us. 1030 */ 1031 list_add_tail(&client->detected, &client->driver->clients); 1032 return 0; 1033 } 1034 1035 static int onyx_i2c_probe(struct i2c_client *client, 1036 const struct i2c_device_id *id) 1037 { 1038 struct device_node *node = client->dev.platform_data; 1039 struct onyx *onyx; 1040 u8 dummy; 1041 1042 onyx = kzalloc(sizeof(struct onyx), GFP_KERNEL); 1043 1044 if (!onyx) 1045 return -ENOMEM; 1046 1047 mutex_init(&onyx->mutex); 1048 onyx->i2c = client; 1049 i2c_set_clientdata(client, onyx); 1050 1051 /* we try to read from register ONYX_REG_CONTROL 1052 * to check if the codec is present */ 1053 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &dummy) != 0) { 1054 printk(KERN_ERR PFX "failed to read control register\n"); 1055 goto fail; 1056 } 1057 1058 strlcpy(onyx->codec.name, "onyx", MAX_CODEC_NAME_LEN); 1059 onyx->codec.owner = THIS_MODULE; 1060 onyx->codec.init = onyx_init_codec; 1061 onyx->codec.exit = onyx_exit_codec; 1062 onyx->codec.node = of_node_get(node); 1063 1064 if (aoa_codec_register(&onyx->codec)) { 1065 goto fail; 1066 } 1067 printk(KERN_DEBUG PFX "created and attached onyx instance\n"); 1068 return 0; 1069 fail: 1070 i2c_set_clientdata(client, NULL); 1071 kfree(onyx); 1072 return -ENODEV; 1073 } 1074 1075 static int onyx_i2c_attach(struct i2c_adapter *adapter) 1076 { 1077 struct device_node *busnode, *dev = NULL; 1078 struct pmac_i2c_bus *bus; 1079 1080 bus = pmac_i2c_adapter_to_bus(adapter); 1081 if (bus == NULL) 1082 return -ENODEV; 1083 busnode = pmac_i2c_get_bus_node(bus); 1084 1085 while ((dev = of_get_next_child(busnode, dev)) != NULL) { 1086 if (of_device_is_compatible(dev, "pcm3052")) { 1087 const u32 *addr; 1088 printk(KERN_DEBUG PFX "found pcm3052\n"); 1089 addr = of_get_property(dev, "reg", NULL); 1090 if (!addr) 1091 return -ENODEV; 1092 return onyx_create(adapter, dev, (*addr)>>1); 1093 } 1094 } 1095 1096 /* if that didn't work, try desperate mode for older 1097 * machines that have stuff missing from the device tree */ 1098 1099 if (!of_device_is_compatible(busnode, "k2-i2c")) 1100 return -ENODEV; 1101 1102 printk(KERN_DEBUG PFX "found k2-i2c, checking if onyx chip is on it\n"); 1103 /* probe both possible addresses for the onyx chip */ 1104 if (onyx_create(adapter, NULL, 0x46) == 0) 1105 return 0; 1106 return onyx_create(adapter, NULL, 0x47); 1107 } 1108 1109 static int onyx_i2c_remove(struct i2c_client *client) 1110 { 1111 struct onyx *onyx = i2c_get_clientdata(client); 1112 1113 aoa_codec_unregister(&onyx->codec); 1114 of_node_put(onyx->codec.node); 1115 if (onyx->codec_info) 1116 kfree(onyx->codec_info); 1117 kfree(onyx); 1118 return 0; 1119 } 1120 1121 static const struct i2c_device_id onyx_i2c_id[] = { 1122 { "aoa_codec_onyx", 0 }, 1123 { } 1124 }; 1125 1126 static struct i2c_driver onyx_driver = { 1127 .driver = { 1128 .name = "aoa_codec_onyx", 1129 .owner = THIS_MODULE, 1130 }, 1131 .attach_adapter = onyx_i2c_attach, 1132 .probe = onyx_i2c_probe, 1133 .remove = onyx_i2c_remove, 1134 .id_table = onyx_i2c_id, 1135 }; 1136 1137 static int __init onyx_init(void) 1138 { 1139 return i2c_add_driver(&onyx_driver); 1140 } 1141 1142 static void __exit onyx_exit(void) 1143 { 1144 i2c_del_driver(&onyx_driver); 1145 } 1146 1147 module_init(onyx_init); 1148 module_exit(onyx_exit); 1149