1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Apple Onboard Audio driver for Onyx codec 4 * 5 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> 6 * 7 * This is a driver for the pcm3052 codec chip (codenamed Onyx) 8 * that is present in newer Apple hardware (with digital output). 9 * 10 * The Onyx codec has the following connections (listed by the bit 11 * to be used in aoa_codec.connected): 12 * 0: analog output 13 * 1: digital output 14 * 2: line input 15 * 3: microphone input 16 * Note that even though I know of no machine that has for example 17 * the digital output connected but not the analog, I have handled 18 * all the different cases in the code so that this driver may serve 19 * as a good example of what to do. 20 * 21 * NOTE: This driver assumes that there's at most one chip to be 22 * used with one alsa card, in form of creating all kinds 23 * of mixer elements without regard for their existence. 24 * But snd-aoa assumes that there's at most one card, so 25 * this means you can only have one onyx on a system. This 26 * should probably be fixed by changing the assumption of 27 * having just a single card on a system, and making the 28 * 'card' pointer accessible to anyone who needs it instead 29 * of hiding it in the aoa_snd_* functions... 30 */ 31#include <linux/delay.h> 32#include <linux/module.h> 33#include <linux/slab.h> 34MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); 35MODULE_LICENSE("GPL"); 36MODULE_DESCRIPTION("pcm3052 (onyx) codec driver for snd-aoa"); 37 38#include "onyx.h" 39#include "../aoa.h" 40#include "../soundbus/soundbus.h" 41 42 43#define PFX "snd-aoa-codec-onyx: " 44 45struct onyx { 46 /* cache registers 65 to 80, they are write-only! */ 47 u8 cache[16]; 48 struct i2c_client *i2c; 49 struct aoa_codec codec; 50 u32 initialised:1, 51 spdif_locked:1, 52 analog_locked:1, 53 original_mute:2; 54 int open_count; 55 struct codec_info *codec_info; 56 57 /* mutex serializes concurrent access to the device 58 * and this structure. 59 */ 60 struct mutex mutex; 61}; 62#define codec_to_onyx(c) container_of(c, struct onyx, codec) 63 64/* both return 0 if all ok, else on error */ 65static int onyx_read_register(struct onyx *onyx, u8 reg, u8 *value) 66{ 67 s32 v; 68 69 if (reg != ONYX_REG_CONTROL) { 70 *value = onyx->cache[reg-FIRSTREGISTER]; 71 return 0; 72 } 73 v = i2c_smbus_read_byte_data(onyx->i2c, reg); 74 if (v < 0) { 75 *value = 0; 76 return -1; 77 } 78 *value = (u8)v; 79 onyx->cache[ONYX_REG_CONTROL-FIRSTREGISTER] = *value; 80 return 0; 81} 82 83static int onyx_write_register(struct onyx *onyx, u8 reg, u8 value) 84{ 85 int result; 86 87 result = i2c_smbus_write_byte_data(onyx->i2c, reg, value); 88 if (!result) 89 onyx->cache[reg-FIRSTREGISTER] = value; 90 return result; 91} 92 93/* alsa stuff */ 94 95static int onyx_dev_register(struct snd_device *dev) 96{ 97 return 0; 98} 99 100static const struct snd_device_ops ops = { 101 .dev_register = onyx_dev_register, 102}; 103 104/* this is necessary because most alsa mixer programs 105 * can't properly handle the negative range */ 106#define VOLUME_RANGE_SHIFT 128 107 108static int onyx_snd_vol_info(struct snd_kcontrol *kcontrol, 109 struct snd_ctl_elem_info *uinfo) 110{ 111 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 112 uinfo->count = 2; 113 uinfo->value.integer.min = -128 + VOLUME_RANGE_SHIFT; 114 uinfo->value.integer.max = -1 + VOLUME_RANGE_SHIFT; 115 return 0; 116} 117 118static int onyx_snd_vol_get(struct snd_kcontrol *kcontrol, 119 struct snd_ctl_elem_value *ucontrol) 120{ 121 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 122 s8 l, r; 123 124 mutex_lock(&onyx->mutex); 125 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, &l); 126 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, &r); 127 mutex_unlock(&onyx->mutex); 128 129 ucontrol->value.integer.value[0] = l + VOLUME_RANGE_SHIFT; 130 ucontrol->value.integer.value[1] = r + VOLUME_RANGE_SHIFT; 131 132 return 0; 133} 134 135static int onyx_snd_vol_put(struct snd_kcontrol *kcontrol, 136 struct snd_ctl_elem_value *ucontrol) 137{ 138 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 139 s8 l, r; 140 141 if (ucontrol->value.integer.value[0] < -128 + VOLUME_RANGE_SHIFT || 142 ucontrol->value.integer.value[0] > -1 + VOLUME_RANGE_SHIFT) 143 return -EINVAL; 144 if (ucontrol->value.integer.value[1] < -128 + VOLUME_RANGE_SHIFT || 145 ucontrol->value.integer.value[1] > -1 + VOLUME_RANGE_SHIFT) 146 return -EINVAL; 147 148 mutex_lock(&onyx->mutex); 149 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, &l); 150 onyx_read_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, &r); 151 152 if (l + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[0] && 153 r + VOLUME_RANGE_SHIFT == ucontrol->value.integer.value[1]) { 154 mutex_unlock(&onyx->mutex); 155 return 0; 156 } 157 158 onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_LEFT, 159 ucontrol->value.integer.value[0] 160 - VOLUME_RANGE_SHIFT); 161 onyx_write_register(onyx, ONYX_REG_DAC_ATTEN_RIGHT, 162 ucontrol->value.integer.value[1] 163 - VOLUME_RANGE_SHIFT); 164 mutex_unlock(&onyx->mutex); 165 166 return 1; 167} 168 169static const struct snd_kcontrol_new volume_control = { 170 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 171 .name = "Master Playback Volume", 172 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 173 .info = onyx_snd_vol_info, 174 .get = onyx_snd_vol_get, 175 .put = onyx_snd_vol_put, 176}; 177 178/* like above, this is necessary because a lot 179 * of alsa mixer programs don't handle ranges 180 * that don't start at 0 properly. 181 * even alsamixer is one of them... */ 182#define INPUTGAIN_RANGE_SHIFT (-3) 183 184static int onyx_snd_inputgain_info(struct snd_kcontrol *kcontrol, 185 struct snd_ctl_elem_info *uinfo) 186{ 187 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 188 uinfo->count = 1; 189 uinfo->value.integer.min = 3 + INPUTGAIN_RANGE_SHIFT; 190 uinfo->value.integer.max = 28 + INPUTGAIN_RANGE_SHIFT; 191 return 0; 192} 193 194static int onyx_snd_inputgain_get(struct snd_kcontrol *kcontrol, 195 struct snd_ctl_elem_value *ucontrol) 196{ 197 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 198 u8 ig; 199 200 mutex_lock(&onyx->mutex); 201 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &ig); 202 mutex_unlock(&onyx->mutex); 203 204 ucontrol->value.integer.value[0] = 205 (ig & ONYX_ADC_PGA_GAIN_MASK) + INPUTGAIN_RANGE_SHIFT; 206 207 return 0; 208} 209 210static int onyx_snd_inputgain_put(struct snd_kcontrol *kcontrol, 211 struct snd_ctl_elem_value *ucontrol) 212{ 213 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 214 u8 v, n; 215 216 if (ucontrol->value.integer.value[0] < 3 + INPUTGAIN_RANGE_SHIFT || 217 ucontrol->value.integer.value[0] > 28 + INPUTGAIN_RANGE_SHIFT) 218 return -EINVAL; 219 mutex_lock(&onyx->mutex); 220 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v); 221 n = v; 222 n &= ~ONYX_ADC_PGA_GAIN_MASK; 223 n |= (ucontrol->value.integer.value[0] - INPUTGAIN_RANGE_SHIFT) 224 & ONYX_ADC_PGA_GAIN_MASK; 225 onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, n); 226 mutex_unlock(&onyx->mutex); 227 228 return n != v; 229} 230 231static const struct snd_kcontrol_new inputgain_control = { 232 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 233 .name = "Master Capture Volume", 234 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 235 .info = onyx_snd_inputgain_info, 236 .get = onyx_snd_inputgain_get, 237 .put = onyx_snd_inputgain_put, 238}; 239 240static int onyx_snd_capture_source_info(struct snd_kcontrol *kcontrol, 241 struct snd_ctl_elem_info *uinfo) 242{ 243 static const char * const texts[] = { "Line-In", "Microphone" }; 244 245 return snd_ctl_enum_info(uinfo, 1, 2, texts); 246} 247 248static int onyx_snd_capture_source_get(struct snd_kcontrol *kcontrol, 249 struct snd_ctl_elem_value *ucontrol) 250{ 251 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 252 s8 v; 253 254 mutex_lock(&onyx->mutex); 255 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v); 256 mutex_unlock(&onyx->mutex); 257 258 ucontrol->value.enumerated.item[0] = !!(v&ONYX_ADC_INPUT_MIC); 259 260 return 0; 261} 262 263static void onyx_set_capture_source(struct onyx *onyx, int mic) 264{ 265 s8 v; 266 267 mutex_lock(&onyx->mutex); 268 onyx_read_register(onyx, ONYX_REG_ADC_CONTROL, &v); 269 v &= ~ONYX_ADC_INPUT_MIC; 270 if (mic) 271 v |= ONYX_ADC_INPUT_MIC; 272 onyx_write_register(onyx, ONYX_REG_ADC_CONTROL, v); 273 mutex_unlock(&onyx->mutex); 274} 275 276static int onyx_snd_capture_source_put(struct snd_kcontrol *kcontrol, 277 struct snd_ctl_elem_value *ucontrol) 278{ 279 if (ucontrol->value.enumerated.item[0] > 1) 280 return -EINVAL; 281 onyx_set_capture_source(snd_kcontrol_chip(kcontrol), 282 ucontrol->value.enumerated.item[0]); 283 return 1; 284} 285 286static const struct snd_kcontrol_new capture_source_control = { 287 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 288 /* If we name this 'Input Source', it properly shows up in 289 * alsamixer as a selection, * but it's shown under the 290 * 'Playback' category. 291 * If I name it 'Capture Source', it shows up in strange 292 * ways (two bools of which one can be selected at a 293 * time) but at least it's shown in the 'Capture' 294 * category. 295 * I was told that this was due to backward compatibility, 296 * but I don't understand then why the mangling is *not* 297 * done when I name it "Input Source"..... 298 */ 299 .name = "Capture Source", 300 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 301 .info = onyx_snd_capture_source_info, 302 .get = onyx_snd_capture_source_get, 303 .put = onyx_snd_capture_source_put, 304}; 305 306#define onyx_snd_mute_info snd_ctl_boolean_stereo_info 307 308static int onyx_snd_mute_get(struct snd_kcontrol *kcontrol, 309 struct snd_ctl_elem_value *ucontrol) 310{ 311 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 312 u8 c; 313 314 mutex_lock(&onyx->mutex); 315 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &c); 316 mutex_unlock(&onyx->mutex); 317 318 ucontrol->value.integer.value[0] = !(c & ONYX_MUTE_LEFT); 319 ucontrol->value.integer.value[1] = !(c & ONYX_MUTE_RIGHT); 320 321 return 0; 322} 323 324static int onyx_snd_mute_put(struct snd_kcontrol *kcontrol, 325 struct snd_ctl_elem_value *ucontrol) 326{ 327 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 328 u8 v = 0, c = 0; 329 int err = -EBUSY; 330 331 mutex_lock(&onyx->mutex); 332 if (onyx->analog_locked) 333 goto out_unlock; 334 335 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v); 336 c = v; 337 c &= ~(ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT); 338 if (!ucontrol->value.integer.value[0]) 339 c |= ONYX_MUTE_LEFT; 340 if (!ucontrol->value.integer.value[1]) 341 c |= ONYX_MUTE_RIGHT; 342 err = onyx_write_register(onyx, ONYX_REG_DAC_CONTROL, c); 343 344 out_unlock: 345 mutex_unlock(&onyx->mutex); 346 347 return !err ? (v != c) : err; 348} 349 350static const struct snd_kcontrol_new mute_control = { 351 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 352 .name = "Master Playback Switch", 353 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 354 .info = onyx_snd_mute_info, 355 .get = onyx_snd_mute_get, 356 .put = onyx_snd_mute_put, 357}; 358 359 360#define onyx_snd_single_bit_info snd_ctl_boolean_mono_info 361 362#define FLAG_POLARITY_INVERT 1 363#define FLAG_SPDIFLOCK 2 364 365static int onyx_snd_single_bit_get(struct snd_kcontrol *kcontrol, 366 struct snd_ctl_elem_value *ucontrol) 367{ 368 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 369 u8 c; 370 long int pv = kcontrol->private_value; 371 u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT; 372 u8 address = (pv >> 8) & 0xff; 373 u8 mask = pv & 0xff; 374 375 mutex_lock(&onyx->mutex); 376 onyx_read_register(onyx, address, &c); 377 mutex_unlock(&onyx->mutex); 378 379 ucontrol->value.integer.value[0] = !!(c & mask) ^ polarity; 380 381 return 0; 382} 383 384static int onyx_snd_single_bit_put(struct snd_kcontrol *kcontrol, 385 struct snd_ctl_elem_value *ucontrol) 386{ 387 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 388 u8 v = 0, c = 0; 389 int err; 390 long int pv = kcontrol->private_value; 391 u8 polarity = (pv >> 16) & FLAG_POLARITY_INVERT; 392 u8 spdiflock = (pv >> 16) & FLAG_SPDIFLOCK; 393 u8 address = (pv >> 8) & 0xff; 394 u8 mask = pv & 0xff; 395 396 mutex_lock(&onyx->mutex); 397 if (spdiflock && onyx->spdif_locked) { 398 /* even if alsamixer doesn't care.. */ 399 err = -EBUSY; 400 goto out_unlock; 401 } 402 onyx_read_register(onyx, address, &v); 403 c = v; 404 c &= ~(mask); 405 if (!!ucontrol->value.integer.value[0] ^ polarity) 406 c |= mask; 407 err = onyx_write_register(onyx, address, c); 408 409 out_unlock: 410 mutex_unlock(&onyx->mutex); 411 412 return !err ? (v != c) : err; 413} 414 415#define SINGLE_BIT(n, type, description, address, mask, flags) \ 416static const struct snd_kcontrol_new n##_control = { \ 417 .iface = SNDRV_CTL_ELEM_IFACE_##type, \ 418 .name = description, \ 419 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \ 420 .info = onyx_snd_single_bit_info, \ 421 .get = onyx_snd_single_bit_get, \ 422 .put = onyx_snd_single_bit_put, \ 423 .private_value = (flags << 16) | (address << 8) | mask \ 424} 425 426SINGLE_BIT(spdif, 427 MIXER, 428 SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH), 429 ONYX_REG_DIG_INFO4, 430 ONYX_SPDIF_ENABLE, 431 FLAG_SPDIFLOCK); 432SINGLE_BIT(ovr1, 433 MIXER, 434 "Oversampling Rate", 435 ONYX_REG_DAC_CONTROL, 436 ONYX_OVR1, 437 0); 438SINGLE_BIT(flt0, 439 MIXER, 440 "Fast Digital Filter Rolloff", 441 ONYX_REG_DAC_FILTER, 442 ONYX_ROLLOFF_FAST, 443 FLAG_POLARITY_INVERT); 444SINGLE_BIT(hpf, 445 MIXER, 446 "Highpass Filter", 447 ONYX_REG_ADC_HPF_BYPASS, 448 ONYX_HPF_DISABLE, 449 FLAG_POLARITY_INVERT); 450SINGLE_BIT(dm12, 451 MIXER, 452 "Digital De-Emphasis", 453 ONYX_REG_DAC_DEEMPH, 454 ONYX_DIGDEEMPH_CTRL, 455 0); 456 457static int onyx_spdif_info(struct snd_kcontrol *kcontrol, 458 struct snd_ctl_elem_info *uinfo) 459{ 460 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 461 uinfo->count = 1; 462 return 0; 463} 464 465static int onyx_spdif_mask_get(struct snd_kcontrol *kcontrol, 466 struct snd_ctl_elem_value *ucontrol) 467{ 468 /* datasheet page 30, all others are 0 */ 469 ucontrol->value.iec958.status[0] = 0x3e; 470 ucontrol->value.iec958.status[1] = 0xff; 471 472 ucontrol->value.iec958.status[3] = 0x3f; 473 ucontrol->value.iec958.status[4] = 0x0f; 474 475 return 0; 476} 477 478static const struct snd_kcontrol_new onyx_spdif_mask = { 479 .access = SNDRV_CTL_ELEM_ACCESS_READ, 480 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 481 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK), 482 .info = onyx_spdif_info, 483 .get = onyx_spdif_mask_get, 484}; 485 486static int onyx_spdif_get(struct snd_kcontrol *kcontrol, 487 struct snd_ctl_elem_value *ucontrol) 488{ 489 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 490 u8 v; 491 492 mutex_lock(&onyx->mutex); 493 onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v); 494 ucontrol->value.iec958.status[0] = v & 0x3e; 495 496 onyx_read_register(onyx, ONYX_REG_DIG_INFO2, &v); 497 ucontrol->value.iec958.status[1] = v; 498 499 onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v); 500 ucontrol->value.iec958.status[3] = v & 0x3f; 501 502 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v); 503 ucontrol->value.iec958.status[4] = v & 0x0f; 504 mutex_unlock(&onyx->mutex); 505 506 return 0; 507} 508 509static int onyx_spdif_put(struct snd_kcontrol *kcontrol, 510 struct snd_ctl_elem_value *ucontrol) 511{ 512 struct onyx *onyx = snd_kcontrol_chip(kcontrol); 513 u8 v; 514 515 mutex_lock(&onyx->mutex); 516 onyx_read_register(onyx, ONYX_REG_DIG_INFO1, &v); 517 v = (v & ~0x3e) | (ucontrol->value.iec958.status[0] & 0x3e); 518 onyx_write_register(onyx, ONYX_REG_DIG_INFO1, v); 519 520 v = ucontrol->value.iec958.status[1]; 521 onyx_write_register(onyx, ONYX_REG_DIG_INFO2, v); 522 523 onyx_read_register(onyx, ONYX_REG_DIG_INFO3, &v); 524 v = (v & ~0x3f) | (ucontrol->value.iec958.status[3] & 0x3f); 525 onyx_write_register(onyx, ONYX_REG_DIG_INFO3, v); 526 527 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v); 528 v = (v & ~0x0f) | (ucontrol->value.iec958.status[4] & 0x0f); 529 onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v); 530 mutex_unlock(&onyx->mutex); 531 532 return 1; 533} 534 535static const struct snd_kcontrol_new onyx_spdif_ctrl = { 536 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 537 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 538 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT), 539 .info = onyx_spdif_info, 540 .get = onyx_spdif_get, 541 .put = onyx_spdif_put, 542}; 543 544/* our registers */ 545 546static const u8 register_map[] = { 547 ONYX_REG_DAC_ATTEN_LEFT, 548 ONYX_REG_DAC_ATTEN_RIGHT, 549 ONYX_REG_CONTROL, 550 ONYX_REG_DAC_CONTROL, 551 ONYX_REG_DAC_DEEMPH, 552 ONYX_REG_DAC_FILTER, 553 ONYX_REG_DAC_OUTPHASE, 554 ONYX_REG_ADC_CONTROL, 555 ONYX_REG_ADC_HPF_BYPASS, 556 ONYX_REG_DIG_INFO1, 557 ONYX_REG_DIG_INFO2, 558 ONYX_REG_DIG_INFO3, 559 ONYX_REG_DIG_INFO4 560}; 561 562static const u8 initial_values[ARRAY_SIZE(register_map)] = { 563 0x80, 0x80, /* muted */ 564 ONYX_MRST | ONYX_SRST, /* but handled specially! */ 565 ONYX_MUTE_LEFT | ONYX_MUTE_RIGHT, 566 0, /* no deemphasis */ 567 ONYX_DAC_FILTER_ALWAYS, 568 ONYX_OUTPHASE_INVERTED, 569 (-1 /*dB*/ + 8) & 0xF, /* line in selected, -1 dB gain*/ 570 ONYX_ADC_HPF_ALWAYS, 571 (1<<2), /* pcm audio */ 572 2, /* category: pcm coder */ 573 0, /* sampling frequency 44.1 kHz, clock accuracy level II */ 574 1 /* 24 bit depth */ 575}; 576 577/* reset registers of chip, either to initial or to previous values */ 578static int onyx_register_init(struct onyx *onyx) 579{ 580 int i; 581 u8 val; 582 u8 regs[sizeof(initial_values)]; 583 584 if (!onyx->initialised) { 585 memcpy(regs, initial_values, sizeof(initial_values)); 586 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &val)) 587 return -1; 588 val &= ~ONYX_SILICONVERSION; 589 val |= initial_values[3]; 590 regs[3] = val; 591 } else { 592 for (i=0; i<sizeof(register_map); i++) 593 regs[i] = onyx->cache[register_map[i]-FIRSTREGISTER]; 594 } 595 596 for (i=0; i<sizeof(register_map); i++) { 597 if (onyx_write_register(onyx, register_map[i], regs[i])) 598 return -1; 599 } 600 onyx->initialised = 1; 601 return 0; 602} 603 604static struct transfer_info onyx_transfers[] = { 605 /* this is first so we can skip it if no input is present... 606 * No hardware exists with that, but it's here as an example 607 * of what to do :) */ 608 { 609 /* analog input */ 610 .formats = SNDRV_PCM_FMTBIT_S8 | 611 SNDRV_PCM_FMTBIT_S16_BE | 612 SNDRV_PCM_FMTBIT_S24_BE, 613 .rates = SNDRV_PCM_RATE_8000_96000, 614 .transfer_in = 1, 615 .must_be_clock_source = 0, 616 .tag = 0, 617 }, 618 { 619 /* if analog and digital are currently off, anything should go, 620 * so this entry describes everything we can do... */ 621 .formats = SNDRV_PCM_FMTBIT_S8 | 622 SNDRV_PCM_FMTBIT_S16_BE | 623 SNDRV_PCM_FMTBIT_S24_BE 624#ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE 625 | SNDRV_PCM_FMTBIT_COMPRESSED_16BE 626#endif 627 , 628 .rates = SNDRV_PCM_RATE_8000_96000, 629 .tag = 0, 630 }, 631 { 632 /* analog output */ 633 .formats = SNDRV_PCM_FMTBIT_S8 | 634 SNDRV_PCM_FMTBIT_S16_BE | 635 SNDRV_PCM_FMTBIT_S24_BE, 636 .rates = SNDRV_PCM_RATE_8000_96000, 637 .transfer_in = 0, 638 .must_be_clock_source = 0, 639 .tag = 1, 640 }, 641 { 642 /* digital pcm output, also possible for analog out */ 643 .formats = SNDRV_PCM_FMTBIT_S8 | 644 SNDRV_PCM_FMTBIT_S16_BE | 645 SNDRV_PCM_FMTBIT_S24_BE, 646 .rates = SNDRV_PCM_RATE_32000 | 647 SNDRV_PCM_RATE_44100 | 648 SNDRV_PCM_RATE_48000, 649 .transfer_in = 0, 650 .must_be_clock_source = 0, 651 .tag = 2, 652 }, 653#ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE 654 /* Once alsa gets supports for this kind of thing we can add it... */ 655 { 656 /* digital compressed output */ 657 .formats = SNDRV_PCM_FMTBIT_COMPRESSED_16BE, 658 .rates = SNDRV_PCM_RATE_32000 | 659 SNDRV_PCM_RATE_44100 | 660 SNDRV_PCM_RATE_48000, 661 .tag = 2, 662 }, 663#endif 664 {} 665}; 666 667static int onyx_usable(struct codec_info_item *cii, 668 struct transfer_info *ti, 669 struct transfer_info *out) 670{ 671 u8 v; 672 struct onyx *onyx = cii->codec_data; 673 int spdif_enabled, analog_enabled; 674 675 mutex_lock(&onyx->mutex); 676 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v); 677 spdif_enabled = !!(v & ONYX_SPDIF_ENABLE); 678 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v); 679 analog_enabled = 680 (v & (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT)) 681 != (ONYX_MUTE_RIGHT|ONYX_MUTE_LEFT); 682 mutex_unlock(&onyx->mutex); 683 684 switch (ti->tag) { 685 case 0: return 1; 686 case 1: return analog_enabled; 687 case 2: return spdif_enabled; 688 } 689 return 1; 690} 691 692static int onyx_prepare(struct codec_info_item *cii, 693 struct bus_info *bi, 694 struct snd_pcm_substream *substream) 695{ 696 u8 v; 697 struct onyx *onyx = cii->codec_data; 698 int err = -EBUSY; 699 700 mutex_lock(&onyx->mutex); 701 702#ifdef SNDRV_PCM_FMTBIT_COMPRESSED_16BE 703 if (substream->runtime->format == SNDRV_PCM_FMTBIT_COMPRESSED_16BE) { 704 /* mute and lock analog output */ 705 onyx_read_register(onyx, ONYX_REG_DAC_CONTROL, &v); 706 if (onyx_write_register(onyx, 707 ONYX_REG_DAC_CONTROL, 708 v | ONYX_MUTE_RIGHT | ONYX_MUTE_LEFT)) 709 goto out_unlock; 710 onyx->analog_locked = 1; 711 err = 0; 712 goto out_unlock; 713 } 714#endif 715 switch (substream->runtime->rate) { 716 case 32000: 717 case 44100: 718 case 48000: 719 /* these rates are ok for all outputs */ 720 /* FIXME: program spdif channel control bits here so that 721 * userspace doesn't have to if it only plays pcm! */ 722 err = 0; 723 goto out_unlock; 724 default: 725 /* got some rate that the digital output can't do, 726 * so disable and lock it */ 727 onyx_read_register(cii->codec_data, ONYX_REG_DIG_INFO4, &v); 728 if (onyx_write_register(onyx, 729 ONYX_REG_DIG_INFO4, 730 v & ~ONYX_SPDIF_ENABLE)) 731 goto out_unlock; 732 onyx->spdif_locked = 1; 733 err = 0; 734 goto out_unlock; 735 } 736 737 out_unlock: 738 mutex_unlock(&onyx->mutex); 739 740 return err; 741} 742 743static int onyx_open(struct codec_info_item *cii, 744 struct snd_pcm_substream *substream) 745{ 746 struct onyx *onyx = cii->codec_data; 747 748 mutex_lock(&onyx->mutex); 749 onyx->open_count++; 750 mutex_unlock(&onyx->mutex); 751 752 return 0; 753} 754 755static int onyx_close(struct codec_info_item *cii, 756 struct snd_pcm_substream *substream) 757{ 758 struct onyx *onyx = cii->codec_data; 759 760 mutex_lock(&onyx->mutex); 761 onyx->open_count--; 762 if (!onyx->open_count) 763 onyx->spdif_locked = onyx->analog_locked = 0; 764 mutex_unlock(&onyx->mutex); 765 766 return 0; 767} 768 769static int onyx_switch_clock(struct codec_info_item *cii, 770 enum clock_switch what) 771{ 772 struct onyx *onyx = cii->codec_data; 773 774 mutex_lock(&onyx->mutex); 775 /* this *MUST* be more elaborate later... */ 776 switch (what) { 777 case CLOCK_SWITCH_PREPARE_SLAVE: 778 onyx->codec.gpio->methods->all_amps_off(onyx->codec.gpio); 779 break; 780 case CLOCK_SWITCH_SLAVE: 781 onyx->codec.gpio->methods->all_amps_restore(onyx->codec.gpio); 782 break; 783 default: /* silence warning */ 784 break; 785 } 786 mutex_unlock(&onyx->mutex); 787 788 return 0; 789} 790 791#ifdef CONFIG_PM 792 793static int onyx_suspend(struct codec_info_item *cii, pm_message_t state) 794{ 795 struct onyx *onyx = cii->codec_data; 796 u8 v; 797 int err = -ENXIO; 798 799 mutex_lock(&onyx->mutex); 800 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v)) 801 goto out_unlock; 802 onyx_write_register(onyx, ONYX_REG_CONTROL, v | ONYX_ADPSV | ONYX_DAPSV); 803 /* Apple does a sleep here but the datasheet says to do it on resume */ 804 err = 0; 805 out_unlock: 806 mutex_unlock(&onyx->mutex); 807 808 return err; 809} 810 811static int onyx_resume(struct codec_info_item *cii) 812{ 813 struct onyx *onyx = cii->codec_data; 814 u8 v; 815 int err = -ENXIO; 816 817 mutex_lock(&onyx->mutex); 818 819 /* reset codec */ 820 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0); 821 msleep(1); 822 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 1); 823 msleep(1); 824 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0); 825 msleep(1); 826 827 /* take codec out of suspend (if it still is after reset) */ 828 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &v)) 829 goto out_unlock; 830 onyx_write_register(onyx, ONYX_REG_CONTROL, v & ~(ONYX_ADPSV | ONYX_DAPSV)); 831 /* FIXME: should divide by sample rate, but 8k is the lowest we go */ 832 msleep(2205000/8000); 833 /* reset all values */ 834 onyx_register_init(onyx); 835 err = 0; 836 out_unlock: 837 mutex_unlock(&onyx->mutex); 838 839 return err; 840} 841 842#endif /* CONFIG_PM */ 843 844static struct codec_info onyx_codec_info = { 845 .transfers = onyx_transfers, 846 .sysclock_factor = 256, 847 .bus_factor = 64, 848 .owner = THIS_MODULE, 849 .usable = onyx_usable, 850 .prepare = onyx_prepare, 851 .open = onyx_open, 852 .close = onyx_close, 853 .switch_clock = onyx_switch_clock, 854#ifdef CONFIG_PM 855 .suspend = onyx_suspend, 856 .resume = onyx_resume, 857#endif 858}; 859 860static int onyx_init_codec(struct aoa_codec *codec) 861{ 862 struct onyx *onyx = codec_to_onyx(codec); 863 struct snd_kcontrol *ctl; 864 struct codec_info *ci = &onyx_codec_info; 865 u8 v; 866 int err; 867 868 if (!onyx->codec.gpio || !onyx->codec.gpio->methods) { 869 printk(KERN_ERR PFX "gpios not assigned!!\n"); 870 return -EINVAL; 871 } 872 873 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0); 874 msleep(1); 875 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 1); 876 msleep(1); 877 onyx->codec.gpio->methods->set_hw_reset(onyx->codec.gpio, 0); 878 msleep(1); 879 880 if (onyx_register_init(onyx)) { 881 printk(KERN_ERR PFX "failed to initialise onyx registers\n"); 882 return -ENODEV; 883 } 884 885 if (aoa_snd_device_new(SNDRV_DEV_CODEC, onyx, &ops)) { 886 printk(KERN_ERR PFX "failed to create onyx snd device!\n"); 887 return -ENODEV; 888 } 889 890 /* nothing connected? what a joke! */ 891 if ((onyx->codec.connected & 0xF) == 0) 892 return -ENOTCONN; 893 894 /* if no inputs are present... */ 895 if ((onyx->codec.connected & 0xC) == 0) { 896 if (!onyx->codec_info) 897 onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL); 898 if (!onyx->codec_info) 899 return -ENOMEM; 900 ci = onyx->codec_info; 901 *ci = onyx_codec_info; 902 ci->transfers++; 903 } 904 905 /* if no outputs are present... */ 906 if ((onyx->codec.connected & 3) == 0) { 907 if (!onyx->codec_info) 908 onyx->codec_info = kmalloc(sizeof(struct codec_info), GFP_KERNEL); 909 if (!onyx->codec_info) 910 return -ENOMEM; 911 ci = onyx->codec_info; 912 /* this is fine as there have to be inputs 913 * if we end up in this part of the code */ 914 *ci = onyx_codec_info; 915 ci->transfers[1].formats = 0; 916 } 917 918 if (onyx->codec.soundbus_dev->attach_codec(onyx->codec.soundbus_dev, 919 aoa_get_card(), 920 ci, onyx)) { 921 printk(KERN_ERR PFX "error creating onyx pcm\n"); 922 return -ENODEV; 923 } 924#define ADDCTL(n) \ 925 do { \ 926 ctl = snd_ctl_new1(&n, onyx); \ 927 if (ctl) { \ 928 ctl->id.device = \ 929 onyx->codec.soundbus_dev->pcm->device; \ 930 err = aoa_snd_ctl_add(ctl); \ 931 if (err) \ 932 goto error; \ 933 } \ 934 } while (0) 935 936 if (onyx->codec.soundbus_dev->pcm) { 937 /* give the user appropriate controls 938 * depending on what inputs are connected */ 939 if ((onyx->codec.connected & 0xC) == 0xC) 940 ADDCTL(capture_source_control); 941 else if (onyx->codec.connected & 4) 942 onyx_set_capture_source(onyx, 0); 943 else 944 onyx_set_capture_source(onyx, 1); 945 if (onyx->codec.connected & 0xC) 946 ADDCTL(inputgain_control); 947 948 /* depending on what output is connected, 949 * give the user appropriate controls */ 950 if (onyx->codec.connected & 1) { 951 ADDCTL(volume_control); 952 ADDCTL(mute_control); 953 ADDCTL(ovr1_control); 954 ADDCTL(flt0_control); 955 ADDCTL(hpf_control); 956 ADDCTL(dm12_control); 957 /* spdif control defaults to off */ 958 } 959 if (onyx->codec.connected & 2) { 960 ADDCTL(onyx_spdif_mask); 961 ADDCTL(onyx_spdif_ctrl); 962 } 963 if ((onyx->codec.connected & 3) == 3) 964 ADDCTL(spdif_control); 965 /* if only S/PDIF is connected, enable it unconditionally */ 966 if ((onyx->codec.connected & 3) == 2) { 967 onyx_read_register(onyx, ONYX_REG_DIG_INFO4, &v); 968 v |= ONYX_SPDIF_ENABLE; 969 onyx_write_register(onyx, ONYX_REG_DIG_INFO4, v); 970 } 971 } 972#undef ADDCTL 973 printk(KERN_INFO PFX "attached to onyx codec via i2c\n"); 974 975 return 0; 976 error: 977 onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx); 978 snd_device_free(aoa_get_card(), onyx); 979 return err; 980} 981 982static void onyx_exit_codec(struct aoa_codec *codec) 983{ 984 struct onyx *onyx = codec_to_onyx(codec); 985 986 if (!onyx->codec.soundbus_dev) { 987 printk(KERN_ERR PFX "onyx_exit_codec called without soundbus_dev!\n"); 988 return; 989 } 990 onyx->codec.soundbus_dev->detach_codec(onyx->codec.soundbus_dev, onyx); 991} 992 993static int onyx_i2c_probe(struct i2c_client *client) 994{ 995 struct device_node *node = client->dev.of_node; 996 struct onyx *onyx; 997 u8 dummy; 998 999 onyx = kzalloc(sizeof(struct onyx), GFP_KERNEL); 1000 1001 if (!onyx) 1002 return -ENOMEM; 1003 1004 mutex_init(&onyx->mutex); 1005 onyx->i2c = client; 1006 i2c_set_clientdata(client, onyx); 1007 1008 /* we try to read from register ONYX_REG_CONTROL 1009 * to check if the codec is present */ 1010 if (onyx_read_register(onyx, ONYX_REG_CONTROL, &dummy) != 0) { 1011 printk(KERN_ERR PFX "failed to read control register\n"); 1012 goto fail; 1013 } 1014 1015 strscpy(onyx->codec.name, "onyx", MAX_CODEC_NAME_LEN); 1016 onyx->codec.owner = THIS_MODULE; 1017 onyx->codec.init = onyx_init_codec; 1018 onyx->codec.exit = onyx_exit_codec; 1019 onyx->codec.node = of_node_get(node); 1020 1021 if (aoa_codec_register(&onyx->codec)) { 1022 goto fail; 1023 } 1024 printk(KERN_DEBUG PFX "created and attached onyx instance\n"); 1025 return 0; 1026 fail: 1027 kfree(onyx); 1028 return -ENODEV; 1029} 1030 1031static void onyx_i2c_remove(struct i2c_client *client) 1032{ 1033 struct onyx *onyx = i2c_get_clientdata(client); 1034 1035 aoa_codec_unregister(&onyx->codec); 1036 of_node_put(onyx->codec.node); 1037 kfree(onyx->codec_info); 1038 kfree(onyx); 1039} 1040 1041static const struct i2c_device_id onyx_i2c_id[] = { 1042 { "MAC,pcm3052", 0 }, 1043 { } 1044}; 1045MODULE_DEVICE_TABLE(i2c,onyx_i2c_id); 1046 1047static struct i2c_driver onyx_driver = { 1048 .driver = { 1049 .name = "aoa_codec_onyx", 1050 }, 1051 .probe = onyx_i2c_probe, 1052 .remove = onyx_i2c_remove, 1053 .id_table = onyx_i2c_id, 1054}; 1055 1056module_i2c_driver(onyx_driver); 1057