1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * HD-audio codec core device 4 */ 5 6 #include <linux/init.h> 7 #include <linux/delay.h> 8 #include <linux/device.h> 9 #include <linux/slab.h> 10 #include <linux/module.h> 11 #include <linux/export.h> 12 #include <linux/pm_runtime.h> 13 #include <sound/hdaudio.h> 14 #include <sound/hda_regmap.h> 15 #include <sound/pcm.h> 16 #include <sound/pcm_params.h> 17 #include "local.h" 18 19 static void setup_fg_nodes(struct hdac_device *codec); 20 static int get_codec_vendor_name(struct hdac_device *codec); 21 22 static void default_release(struct device *dev) 23 { 24 snd_hdac_device_exit(dev_to_hdac_dev(dev)); 25 } 26 27 /** 28 * snd_hdac_device_init - initialize the HD-audio codec base device 29 * @codec: device to initialize 30 * @bus: but to attach 31 * @name: device name string 32 * @addr: codec address 33 * 34 * Returns zero for success or a negative error code. 35 * 36 * This function increments the runtime PM counter and marks it active. 37 * The caller needs to turn it off appropriately later. 38 * 39 * The caller needs to set the device's release op properly by itself. 40 */ 41 int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus, 42 const char *name, unsigned int addr) 43 { 44 struct device *dev; 45 hda_nid_t fg; 46 int err; 47 48 dev = &codec->dev; 49 device_initialize(dev); 50 dev->parent = bus->dev; 51 dev->bus = &snd_hda_bus_type; 52 dev->release = default_release; 53 dev->groups = hdac_dev_attr_groups; 54 dev_set_name(dev, "%s", name); 55 device_enable_async_suspend(dev); 56 57 codec->bus = bus; 58 codec->addr = addr; 59 codec->type = HDA_DEV_CORE; 60 mutex_init(&codec->widget_lock); 61 mutex_init(&codec->regmap_lock); 62 pm_runtime_set_active(&codec->dev); 63 pm_runtime_get_noresume(&codec->dev); 64 atomic_set(&codec->in_pm, 0); 65 66 err = snd_hdac_bus_add_device(bus, codec); 67 if (err < 0) 68 goto error; 69 70 /* fill parameters */ 71 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, 72 AC_PAR_VENDOR_ID); 73 if (codec->vendor_id == -1) { 74 /* read again, hopefully the access method was corrected 75 * in the last read... 76 */ 77 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, 78 AC_PAR_VENDOR_ID); 79 } 80 81 codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, 82 AC_PAR_SUBSYSTEM_ID); 83 codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, 84 AC_PAR_REV_ID); 85 86 setup_fg_nodes(codec); 87 if (!codec->afg && !codec->mfg) { 88 dev_err(dev, "no AFG or MFG node found\n"); 89 err = -ENODEV; 90 goto error; 91 } 92 93 fg = codec->afg ? codec->afg : codec->mfg; 94 95 err = snd_hdac_refresh_widgets(codec); 96 if (err < 0) 97 goto error; 98 99 codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE); 100 /* reread ssid if not set by parameter */ 101 if (codec->subsystem_id == -1 || codec->subsystem_id == 0) 102 snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0, 103 &codec->subsystem_id); 104 105 err = get_codec_vendor_name(codec); 106 if (err < 0) 107 goto error; 108 109 codec->chip_name = kasprintf(GFP_KERNEL, "ID %x", 110 codec->vendor_id & 0xffff); 111 if (!codec->chip_name) { 112 err = -ENOMEM; 113 goto error; 114 } 115 116 return 0; 117 118 error: 119 put_device(&codec->dev); 120 return err; 121 } 122 EXPORT_SYMBOL_GPL(snd_hdac_device_init); 123 124 /** 125 * snd_hdac_device_exit - clean up the HD-audio codec base device 126 * @codec: device to clean up 127 */ 128 void snd_hdac_device_exit(struct hdac_device *codec) 129 { 130 pm_runtime_put_noidle(&codec->dev); 131 /* keep balance of runtime PM child_count in parent device */ 132 pm_runtime_set_suspended(&codec->dev); 133 snd_hdac_bus_remove_device(codec->bus, codec); 134 kfree(codec->vendor_name); 135 kfree(codec->chip_name); 136 } 137 EXPORT_SYMBOL_GPL(snd_hdac_device_exit); 138 139 /** 140 * snd_hdac_device_register - register the hd-audio codec base device 141 * @codec: the device to register 142 */ 143 int snd_hdac_device_register(struct hdac_device *codec) 144 { 145 int err; 146 147 err = device_add(&codec->dev); 148 if (err < 0) 149 return err; 150 scoped_guard(mutex, &codec->widget_lock) { 151 err = hda_widget_sysfs_init(codec); 152 } 153 if (err < 0) { 154 device_del(&codec->dev); 155 return err; 156 } 157 158 return 0; 159 } 160 EXPORT_SYMBOL_GPL(snd_hdac_device_register); 161 162 /** 163 * snd_hdac_device_unregister - unregister the hd-audio codec base device 164 * @codec: the device to unregister 165 */ 166 void snd_hdac_device_unregister(struct hdac_device *codec) 167 { 168 if (device_is_registered(&codec->dev)) { 169 scoped_guard(mutex, &codec->widget_lock) { 170 hda_widget_sysfs_exit(codec); 171 } 172 device_del(&codec->dev); 173 snd_hdac_bus_remove_device(codec->bus, codec); 174 } 175 } 176 EXPORT_SYMBOL_GPL(snd_hdac_device_unregister); 177 178 /** 179 * snd_hdac_device_set_chip_name - set/update the codec name 180 * @codec: the HDAC device 181 * @name: name string to set 182 * 183 * Returns 0 if the name is set or updated, or a negative error code. 184 */ 185 int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name) 186 { 187 char *newname; 188 189 if (!name) 190 return 0; 191 newname = kstrdup(name, GFP_KERNEL); 192 if (!newname) 193 return -ENOMEM; 194 kfree(codec->chip_name); 195 codec->chip_name = newname; 196 return 0; 197 } 198 EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name); 199 200 /** 201 * snd_hdac_codec_modalias - give the module alias name 202 * @codec: HDAC device 203 * @buf: string buffer to store 204 * @size: string buffer size 205 * 206 * Returns the size of string, like snprintf(), or a negative error code. 207 */ 208 int snd_hdac_codec_modalias(const struct hdac_device *codec, char *buf, size_t size) 209 { 210 return scnprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n", 211 codec->vendor_id, codec->revision_id, codec->type); 212 } 213 EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias); 214 215 /** 216 * snd_hdac_make_cmd - compose a 32bit command word to be sent to the 217 * HD-audio controller 218 * @codec: the codec object 219 * @nid: NID to encode 220 * @verb: verb to encode 221 * @parm: parameter to encode 222 * 223 * Return an encoded command verb or -1 for error. 224 */ 225 static unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid, 226 unsigned int verb, unsigned int parm) 227 { 228 u32 val, addr; 229 230 addr = codec->addr; 231 if ((addr & ~0xf) || (nid & ~0x7f) || 232 (verb & ~0xfff) || (parm & ~0xffff)) { 233 dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n", 234 addr, nid, verb, parm); 235 return -1; 236 } 237 238 val = addr << 28; 239 val |= (u32)nid << 20; 240 val |= verb << 8; 241 val |= parm; 242 return val; 243 } 244 245 /** 246 * snd_hdac_exec_verb - execute an encoded verb 247 * @codec: the codec object 248 * @cmd: encoded verb to execute 249 * @flags: optional flags, pass zero for default 250 * @res: the pointer to store the result, NULL if running async 251 * 252 * Returns zero if successful, or a negative error code. 253 * 254 * This calls the exec_verb op when set in hdac_codec. If not, 255 * call the default snd_hdac_bus_exec_verb(). 256 */ 257 int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, 258 unsigned int flags, unsigned int *res) 259 { 260 if (codec->exec_verb) 261 return codec->exec_verb(codec, cmd, flags, res); 262 return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res); 263 } 264 265 266 /** 267 * snd_hdac_read - execute a verb 268 * @codec: the codec object 269 * @nid: NID to execute a verb 270 * @verb: verb to execute 271 * @parm: parameter for a verb 272 * @res: the pointer to store the result, NULL if running async 273 * 274 * Returns zero if successful, or a negative error code. 275 */ 276 int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, 277 unsigned int verb, unsigned int parm, unsigned int *res) 278 { 279 unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm); 280 281 return snd_hdac_exec_verb(codec, cmd, 0, res); 282 } 283 EXPORT_SYMBOL_GPL(snd_hdac_read); 284 285 /** 286 * _snd_hdac_read_parm - read a parmeter 287 * @codec: the codec object 288 * @nid: NID to read a parameter 289 * @parm: parameter to read 290 * @res: pointer to store the read value 291 * 292 * This function returns zero or an error unlike snd_hdac_read_parm(). 293 */ 294 int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, 295 unsigned int *res) 296 { 297 unsigned int cmd; 298 299 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; 300 return snd_hdac_regmap_read_raw(codec, cmd, res); 301 } 302 EXPORT_SYMBOL_GPL(_snd_hdac_read_parm); 303 304 /** 305 * snd_hdac_read_parm_uncached - read a codec parameter without caching 306 * @codec: the codec object 307 * @nid: NID to read a parameter 308 * @parm: parameter to read 309 * 310 * Returns -1 for error. If you need to distinguish the error more 311 * strictly, use snd_hdac_read() directly. 312 */ 313 int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, 314 int parm) 315 { 316 unsigned int cmd, val; 317 318 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; 319 if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0) 320 return -1; 321 return val; 322 } 323 EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached); 324 325 /** 326 * snd_hdac_override_parm - override read-only parameters 327 * @codec: the codec object 328 * @nid: NID for the parameter 329 * @parm: the parameter to change 330 * @val: the parameter value to overwrite 331 */ 332 int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, 333 unsigned int parm, unsigned int val) 334 { 335 unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm; 336 int err; 337 338 if (!codec->regmap) 339 return -EINVAL; 340 341 codec->caps_overwriting = true; 342 err = snd_hdac_regmap_write_raw(codec, verb, val); 343 codec->caps_overwriting = false; 344 return err; 345 } 346 EXPORT_SYMBOL_GPL(snd_hdac_override_parm); 347 348 /** 349 * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes 350 * @codec: the codec object 351 * @nid: NID to inspect 352 * @start_id: the pointer to store the starting NID 353 * 354 * Returns the number of subtree nodes or zero if not found. 355 * This function reads parameters always without caching. 356 */ 357 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, 358 hda_nid_t *start_id) 359 { 360 unsigned int parm; 361 362 parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT); 363 if (parm == -1) { 364 *start_id = 0; 365 return 0; 366 } 367 *start_id = (parm >> 16) & 0x7fff; 368 return (int)(parm & 0x7fff); 369 } 370 EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes); 371 372 /* 373 * look for an AFG and MFG nodes 374 */ 375 static void setup_fg_nodes(struct hdac_device *codec) 376 { 377 int i, total_nodes, function_id; 378 hda_nid_t nid; 379 380 total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid); 381 for (i = 0; i < total_nodes; i++, nid++) { 382 function_id = snd_hdac_read_parm(codec, nid, 383 AC_PAR_FUNCTION_TYPE); 384 switch (function_id & 0xff) { 385 case AC_GRP_AUDIO_FUNCTION: 386 codec->afg = nid; 387 codec->afg_function_id = function_id & 0xff; 388 codec->afg_unsol = (function_id >> 8) & 1; 389 break; 390 case AC_GRP_MODEM_FUNCTION: 391 codec->mfg = nid; 392 codec->mfg_function_id = function_id & 0xff; 393 codec->mfg_unsol = (function_id >> 8) & 1; 394 break; 395 default: 396 break; 397 } 398 } 399 } 400 401 /** 402 * snd_hdac_refresh_widgets - Reset the widget start/end nodes 403 * @codec: the codec object 404 */ 405 int snd_hdac_refresh_widgets(struct hdac_device *codec) 406 { 407 hda_nid_t start_nid; 408 int nums, err = 0; 409 410 /* 411 * Serialize against multiple threads trying to update the sysfs 412 * widgets array. 413 */ 414 guard(mutex)(&codec->widget_lock); 415 nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid); 416 if (!start_nid || nums <= 0 || nums >= 0xff) { 417 dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n", 418 codec->afg); 419 return -EINVAL; 420 } 421 422 err = hda_widget_sysfs_reinit(codec, start_nid, nums); 423 if (err < 0) 424 return err; 425 426 codec->num_nodes = nums; 427 codec->start_nid = start_nid; 428 codec->end_nid = start_nid + nums; 429 return 0; 430 } 431 EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); 432 433 /* return CONNLIST_LEN parameter of the given widget */ 434 static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) 435 { 436 unsigned int wcaps = snd_hdac_get_wcaps(codec, nid); 437 unsigned int parm; 438 439 if (!(wcaps & AC_WCAP_CONN_LIST) && 440 snd_hdac_get_wcaps_type(wcaps) != AC_WID_VOL_KNB) 441 return 0; 442 443 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); 444 if (parm == -1) 445 parm = 0; 446 return parm; 447 } 448 449 /** 450 * snd_hdac_get_connections - get a widget connection list 451 * @codec: the codec object 452 * @nid: NID 453 * @conn_list: the array to store the results, can be NULL 454 * @max_conns: the max size of the given array 455 * 456 * Returns the number of connected widgets, zero for no connection, or a 457 * negative error code. When the number of elements don't fit with the 458 * given array size, it returns -ENOSPC. 459 * 460 * When @conn_list is NULL, it just checks the number of connections. 461 */ 462 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, 463 hda_nid_t *conn_list, int max_conns) 464 { 465 unsigned int parm; 466 int i, conn_len, conns, err; 467 unsigned int shift, num_elems, mask; 468 hda_nid_t prev_nid; 469 int null_count = 0; 470 471 parm = get_num_conns(codec, nid); 472 if (!parm) 473 return 0; 474 475 if (parm & AC_CLIST_LONG) { 476 /* long form */ 477 shift = 16; 478 num_elems = 2; 479 } else { 480 /* short form */ 481 shift = 8; 482 num_elems = 4; 483 } 484 conn_len = parm & AC_CLIST_LENGTH; 485 mask = (1 << (shift-1)) - 1; 486 487 if (!conn_len) 488 return 0; /* no connection */ 489 490 if (conn_len == 1) { 491 /* single connection */ 492 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, 493 &parm); 494 if (err < 0) 495 return err; 496 if (conn_list) 497 conn_list[0] = parm & mask; 498 return 1; 499 } 500 501 /* multi connection */ 502 conns = 0; 503 prev_nid = 0; 504 for (i = 0; i < conn_len; i++) { 505 int range_val; 506 hda_nid_t val, n; 507 508 if (i % num_elems == 0) { 509 err = snd_hdac_read(codec, nid, 510 AC_VERB_GET_CONNECT_LIST, i, 511 &parm); 512 if (err < 0) 513 return -EIO; 514 } 515 range_val = !!(parm & (1 << (shift-1))); /* ranges */ 516 val = parm & mask; 517 if (val == 0 && null_count++) { /* no second chance */ 518 dev_dbg(&codec->dev, 519 "invalid CONNECT_LIST verb %x[%i]:%x\n", 520 nid, i, parm); 521 return 0; 522 } 523 parm >>= shift; 524 if (range_val) { 525 /* ranges between the previous and this one */ 526 if (!prev_nid || prev_nid >= val) { 527 dev_warn(&codec->dev, 528 "invalid dep_range_val %x:%x\n", 529 prev_nid, val); 530 continue; 531 } 532 for (n = prev_nid + 1; n <= val; n++) { 533 if (conn_list) { 534 if (conns >= max_conns) 535 return -ENOSPC; 536 conn_list[conns] = n; 537 } 538 conns++; 539 } 540 } else { 541 if (conn_list) { 542 if (conns >= max_conns) 543 return -ENOSPC; 544 conn_list[conns] = val; 545 } 546 conns++; 547 } 548 prev_nid = val; 549 } 550 return conns; 551 } 552 EXPORT_SYMBOL_GPL(snd_hdac_get_connections); 553 554 #ifdef CONFIG_PM 555 /** 556 * snd_hdac_power_up - power up the codec 557 * @codec: the codec object 558 * 559 * This function calls the runtime PM helper to power up the given codec. 560 * Unlike snd_hdac_power_up_pm(), you should call this only for the code 561 * path that isn't included in PM path. Otherwise it gets stuck. 562 * 563 * Returns zero if successful, or a negative error code. 564 */ 565 int snd_hdac_power_up(struct hdac_device *codec) 566 { 567 return pm_runtime_get_sync(&codec->dev); 568 } 569 EXPORT_SYMBOL_GPL(snd_hdac_power_up); 570 571 /** 572 * snd_hdac_power_down - power down the codec 573 * @codec: the codec object 574 * 575 * Returns zero if successful, or a negative error code. 576 */ 577 int snd_hdac_power_down(struct hdac_device *codec) 578 { 579 struct device *dev = &codec->dev; 580 581 return pm_runtime_put_autosuspend(dev); 582 } 583 EXPORT_SYMBOL_GPL(snd_hdac_power_down); 584 585 /** 586 * snd_hdac_power_up_pm - power up the codec 587 * @codec: the codec object 588 * 589 * This function can be called in a recursive code path like init code 590 * which may be called by PM suspend/resume again. OTOH, if a power-up 591 * call must wake up the sleeper (e.g. in a kctl callback), use 592 * snd_hdac_power_up() instead. 593 * 594 * Returns zero if successful, or a negative error code. 595 */ 596 int snd_hdac_power_up_pm(struct hdac_device *codec) 597 { 598 if (!atomic_inc_not_zero(&codec->in_pm)) 599 return snd_hdac_power_up(codec); 600 return 0; 601 } 602 EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); 603 604 /* like snd_hdac_power_up_pm(), but only increment the pm count when 605 * already powered up. Returns -1 if not powered up, 1 if incremented 606 * or 0 if unchanged. Only used in hdac_regmap.c 607 */ 608 int snd_hdac_keep_power_up(struct hdac_device *codec) 609 { 610 if (!atomic_inc_not_zero(&codec->in_pm)) { 611 int ret = pm_runtime_get_if_active(&codec->dev); 612 if (!ret) 613 return -1; 614 if (ret < 0) 615 return 0; 616 } 617 return 1; 618 } 619 620 /** 621 * snd_hdac_power_down_pm - power down the codec 622 * @codec: the codec object 623 * 624 * Like snd_hdac_power_up_pm(), this function is used in a recursive 625 * code path like init code which may be called by PM suspend/resume again. 626 * 627 * Returns zero if successful, or a negative error code. 628 */ 629 int snd_hdac_power_down_pm(struct hdac_device *codec) 630 { 631 if (atomic_dec_if_positive(&codec->in_pm) < 0) 632 return snd_hdac_power_down(codec); 633 return 0; 634 } 635 EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); 636 #endif 637 638 /* codec vendor labels */ 639 struct hda_vendor_id { 640 unsigned int id; 641 const char *name; 642 }; 643 644 static const struct hda_vendor_id hda_vendor_ids[] = { 645 { 0x0014, "Loongson" }, 646 { 0x1002, "ATI" }, 647 { 0x1013, "Cirrus Logic" }, 648 { 0x1057, "Motorola" }, 649 { 0x1095, "Silicon Image" }, 650 { 0x10de, "Nvidia" }, 651 { 0x10ec, "Realtek" }, 652 { 0x1102, "Creative" }, 653 { 0x1106, "VIA" }, 654 { 0x111d, "IDT" }, 655 { 0x11c1, "LSI" }, 656 { 0x11d4, "Analog Devices" }, 657 { 0x13f6, "C-Media" }, 658 { 0x14f1, "Conexant" }, 659 { 0x17e8, "Chrontel" }, 660 { 0x1854, "LG" }, 661 { 0x19e5, "Huawei" }, 662 { 0x1aec, "Wolfson Microelectronics" }, 663 { 0x1af4, "QEMU" }, 664 { 0x1fa8, "Senarytech" }, 665 { 0x434d, "C-Media" }, 666 { 0x8086, "Intel" }, 667 { 0x8384, "SigmaTel" }, 668 {} /* terminator */ 669 }; 670 671 /* store the codec vendor name */ 672 static int get_codec_vendor_name(struct hdac_device *codec) 673 { 674 const struct hda_vendor_id *c; 675 u16 vendor_id = codec->vendor_id >> 16; 676 677 for (c = hda_vendor_ids; c->id; c++) { 678 if (c->id == vendor_id) { 679 codec->vendor_name = kstrdup(c->name, GFP_KERNEL); 680 return codec->vendor_name ? 0 : -ENOMEM; 681 } 682 } 683 684 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); 685 return codec->vendor_name ? 0 : -ENOMEM; 686 } 687 688 /* 689 * stream formats 690 */ 691 struct hda_rate_tbl { 692 unsigned int hz; 693 unsigned int alsa_bits; 694 unsigned int hda_fmt; 695 }; 696 697 /* rate = base * mult / div */ 698 #define HDA_RATE(base, mult, div) \ 699 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ 700 (((div) - 1) << AC_FMT_DIV_SHIFT)) 701 702 static const struct hda_rate_tbl rate_bits[] = { 703 /* rate in Hz, ALSA rate bitmask, HDA format value */ 704 705 /* autodetected value used in snd_hda_query_supported_pcm */ 706 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, 707 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, 708 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, 709 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, 710 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, 711 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, 712 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, 713 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, 714 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, 715 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, 716 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, 717 #define AC_PAR_PCM_RATE_BITS 11 718 /* up to bits 10, 384kHZ isn't supported properly */ 719 720 /* not autodetected value */ 721 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, 722 723 { 0 } /* terminator */ 724 }; 725 726 static snd_pcm_format_t snd_hdac_format_normalize(snd_pcm_format_t format) 727 { 728 switch (format) { 729 case SNDRV_PCM_FORMAT_S20_LE: 730 case SNDRV_PCM_FORMAT_S24_LE: 731 return SNDRV_PCM_FORMAT_S32_LE; 732 733 case SNDRV_PCM_FORMAT_U20_LE: 734 case SNDRV_PCM_FORMAT_U24_LE: 735 return SNDRV_PCM_FORMAT_U32_LE; 736 737 case SNDRV_PCM_FORMAT_S20_BE: 738 case SNDRV_PCM_FORMAT_S24_BE: 739 return SNDRV_PCM_FORMAT_S32_BE; 740 741 case SNDRV_PCM_FORMAT_U20_BE: 742 case SNDRV_PCM_FORMAT_U24_BE: 743 return SNDRV_PCM_FORMAT_U32_BE; 744 745 default: 746 return format; 747 } 748 } 749 750 /** 751 * snd_hdac_stream_format_bits - obtain bits per sample value. 752 * @format: the PCM format. 753 * @subformat: the PCM subformat. 754 * @maxbits: the maximum bits per sample. 755 * 756 * Return: The number of bits per sample. 757 */ 758 unsigned int snd_hdac_stream_format_bits(snd_pcm_format_t format, snd_pcm_subformat_t subformat, 759 unsigned int maxbits) 760 { 761 struct snd_pcm_hw_params params; 762 unsigned int bits; 763 764 memset(¶ms, 0, sizeof(params)); 765 766 params_set_format(¶ms, snd_hdac_format_normalize(format)); 767 snd_mask_set(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_SUBFORMAT), 768 (__force unsigned int)subformat); 769 770 bits = snd_pcm_hw_params_bits(¶ms); 771 if (maxbits) 772 return min(bits, maxbits); 773 return bits; 774 } 775 EXPORT_SYMBOL_GPL(snd_hdac_stream_format_bits); 776 777 /** 778 * snd_hdac_stream_format - convert format parameters to SDxFMT value. 779 * @channels: the number of channels. 780 * @bits: bits per sample. 781 * @rate: the sample rate. 782 * 783 * Return: The format bitset or zero if invalid. 784 */ 785 unsigned int snd_hdac_stream_format(unsigned int channels, unsigned int bits, unsigned int rate) 786 { 787 unsigned int val = 0; 788 int i; 789 790 for (i = 0; rate_bits[i].hz; i++) { 791 if (rate_bits[i].hz == rate) { 792 val = rate_bits[i].hda_fmt; 793 break; 794 } 795 } 796 797 if (!rate_bits[i].hz) 798 return 0; 799 800 if (channels == 0 || channels > 16) 801 return 0; 802 val |= channels - 1; 803 804 switch (bits) { 805 case 8: 806 val |= AC_FMT_BITS_8; 807 break; 808 case 16: 809 val |= AC_FMT_BITS_16; 810 break; 811 case 20: 812 val |= AC_FMT_BITS_20; 813 break; 814 case 24: 815 val |= AC_FMT_BITS_24; 816 break; 817 case 32: 818 val |= AC_FMT_BITS_32; 819 break; 820 default: 821 return 0; 822 } 823 824 return val; 825 } 826 EXPORT_SYMBOL_GPL(snd_hdac_stream_format); 827 828 /** 829 * snd_hdac_spdif_stream_format - convert format parameters to SDxFMT value. 830 * @channels: the number of channels. 831 * @bits: bits per sample. 832 * @rate: the sample rate. 833 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant). 834 * 835 * Return: The format bitset or zero if invalid. 836 */ 837 unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bits, 838 unsigned int rate, unsigned short spdif_ctls) 839 { 840 unsigned int val = snd_hdac_stream_format(channels, bits, rate); 841 842 if (val && spdif_ctls & AC_DIG1_NONAUDIO) 843 val |= AC_FMT_TYPE_NON_PCM; 844 845 return val; 846 } 847 EXPORT_SYMBOL_GPL(snd_hdac_spdif_stream_format); 848 849 static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) 850 { 851 unsigned int val = 0; 852 853 if (nid != codec->afg && 854 (snd_hdac_get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) 855 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); 856 if (!val || val == -1) 857 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); 858 if (!val || val == -1) 859 return 0; 860 return val; 861 } 862 863 static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) 864 { 865 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); 866 867 if (!streams || streams == -1) 868 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); 869 if (!streams || streams == -1) 870 return 0; 871 return streams; 872 } 873 874 /** 875 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats 876 * @codec: the codec object 877 * @nid: NID to query 878 * @ratesp: the pointer to store the detected rate bitflags 879 * @formatsp: the pointer to store the detected formats 880 * @subformatsp: the pointer to store the detected subformats for S32_LE format 881 * @bpsp: the pointer to store the detected format widths 882 * 883 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp, 884 * @subformatsp or @bpsp argument is ignored. 885 * 886 * Returns 0 if successful, otherwise a negative error code. 887 */ 888 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, 889 u32 *ratesp, u64 *formatsp, u32 *subformatsp, 890 unsigned int *bpsp) 891 { 892 unsigned int i, val, wcaps; 893 894 wcaps = snd_hdac_get_wcaps(codec, nid); 895 val = query_pcm_param(codec, nid); 896 897 if (ratesp) { 898 u32 rates = 0; 899 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { 900 if (val & (1 << i)) 901 rates |= rate_bits[i].alsa_bits; 902 } 903 if (rates == 0) { 904 dev_err(&codec->dev, 905 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", 906 nid, val, 907 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); 908 return -EIO; 909 } 910 *ratesp = rates; 911 } 912 913 if (formatsp || subformatsp || bpsp) { 914 unsigned int streams, bps; 915 u32 subformats = 0; 916 u64 formats = 0; 917 918 streams = query_stream_param(codec, nid); 919 if (!streams) 920 return -EIO; 921 922 bps = 0; 923 if (streams & AC_SUPFMT_PCM) { 924 if (val & AC_SUPPCM_BITS_8) { 925 formats |= SNDRV_PCM_FMTBIT_U8; 926 bps = 8; 927 } 928 if (val & AC_SUPPCM_BITS_16) { 929 formats |= SNDRV_PCM_FMTBIT_S16_LE; 930 bps = 16; 931 } 932 if (val & AC_SUPPCM_BITS_20) { 933 formats |= SNDRV_PCM_FMTBIT_S32_LE; 934 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_20; 935 bps = 20; 936 } 937 if (val & AC_SUPPCM_BITS_24) { 938 formats |= SNDRV_PCM_FMTBIT_S32_LE; 939 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_24; 940 bps = 24; 941 } 942 if (val & AC_SUPPCM_BITS_32) { 943 if (wcaps & AC_WCAP_DIGITAL) { 944 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; 945 } else { 946 formats |= SNDRV_PCM_FMTBIT_S32_LE; 947 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_MAX; 948 bps = 32; 949 } 950 } 951 } 952 #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ 953 if (streams & AC_SUPFMT_FLOAT32) { 954 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; 955 if (!bps) 956 bps = 32; 957 } 958 #endif 959 if (streams == AC_SUPFMT_AC3) { 960 /* should be exclusive */ 961 /* temporary hack: we have still no proper support 962 * for the direct AC3 stream... 963 */ 964 formats |= SNDRV_PCM_FMTBIT_U8; 965 bps = 8; 966 } 967 if (formats == 0) { 968 dev_err(&codec->dev, 969 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", 970 nid, val, 971 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, 972 streams); 973 return -EIO; 974 } 975 if (formatsp) 976 *formatsp = formats; 977 if (subformatsp) 978 *subformatsp = subformats; 979 if (bpsp) 980 *bpsp = bps; 981 } 982 983 return 0; 984 } 985 EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); 986 987 /** 988 * snd_hdac_is_supported_format - Check the validity of the format 989 * @codec: the codec object 990 * @nid: NID to check 991 * @format: the HD-audio format value to check 992 * 993 * Check whether the given node supports the format value. 994 * 995 * Returns true if supported, false if not. 996 */ 997 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, 998 unsigned int format) 999 { 1000 int i; 1001 unsigned int val = 0, rate, stream; 1002 1003 val = query_pcm_param(codec, nid); 1004 if (!val) 1005 return false; 1006 1007 rate = format & 0xff00; 1008 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) 1009 if (rate_bits[i].hda_fmt == rate) { 1010 if (val & (1 << i)) 1011 break; 1012 return false; 1013 } 1014 if (i >= AC_PAR_PCM_RATE_BITS) 1015 return false; 1016 1017 stream = query_stream_param(codec, nid); 1018 if (!stream) 1019 return false; 1020 1021 if (stream & AC_SUPFMT_PCM) { 1022 switch (format & 0xf0) { 1023 case 0x00: 1024 if (!(val & AC_SUPPCM_BITS_8)) 1025 return false; 1026 break; 1027 case 0x10: 1028 if (!(val & AC_SUPPCM_BITS_16)) 1029 return false; 1030 break; 1031 case 0x20: 1032 if (!(val & AC_SUPPCM_BITS_20)) 1033 return false; 1034 break; 1035 case 0x30: 1036 if (!(val & AC_SUPPCM_BITS_24)) 1037 return false; 1038 break; 1039 case 0x40: 1040 if (!(val & AC_SUPPCM_BITS_32)) 1041 return false; 1042 break; 1043 default: 1044 return false; 1045 } 1046 } else { 1047 /* FIXME: check for float32 and AC3? */ 1048 } 1049 1050 return true; 1051 } 1052 EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); 1053 1054 static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid, 1055 int flags, unsigned int verb, unsigned int parm) 1056 { 1057 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 1058 unsigned int res; 1059 1060 if (snd_hdac_exec_verb(hdac, cmd, flags, &res)) 1061 return -1; 1062 1063 return res; 1064 } 1065 1066 static int codec_write(struct hdac_device *hdac, hda_nid_t nid, 1067 int flags, unsigned int verb, unsigned int parm) 1068 { 1069 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 1070 1071 return snd_hdac_exec_verb(hdac, cmd, flags, NULL); 1072 } 1073 1074 /** 1075 * snd_hdac_codec_read - send a command and get the response 1076 * @hdac: the HDAC device 1077 * @nid: NID to send the command 1078 * @flags: optional bit flags 1079 * @verb: the verb to send 1080 * @parm: the parameter for the verb 1081 * 1082 * Send a single command and read the corresponding response. 1083 * 1084 * Returns the obtained response value, or -1 for an error. 1085 */ 1086 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, 1087 int flags, unsigned int verb, unsigned int parm) 1088 { 1089 return codec_read(hdac, nid, flags, verb, parm); 1090 } 1091 EXPORT_SYMBOL_GPL(snd_hdac_codec_read); 1092 1093 /** 1094 * snd_hdac_codec_write - send a single command without waiting for response 1095 * @hdac: the HDAC device 1096 * @nid: NID to send the command 1097 * @flags: optional bit flags 1098 * @verb: the verb to send 1099 * @parm: the parameter for the verb 1100 * 1101 * Send a single command without waiting for response. 1102 * 1103 * Returns 0 if successful, or a negative error code. 1104 */ 1105 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, 1106 int flags, unsigned int verb, unsigned int parm) 1107 { 1108 return codec_write(hdac, nid, flags, verb, parm); 1109 } 1110 EXPORT_SYMBOL_GPL(snd_hdac_codec_write); 1111 1112 /** 1113 * snd_hdac_check_power_state - check whether the actual power state matches 1114 * with the target state 1115 * 1116 * @hdac: the HDAC device 1117 * @nid: NID to send the command 1118 * @target_state: target state to check for 1119 * 1120 * Return true if state matches, false if not 1121 */ 1122 bool snd_hdac_check_power_state(struct hdac_device *hdac, 1123 hda_nid_t nid, unsigned int target_state) 1124 { 1125 unsigned int state = codec_read(hdac, nid, 0, 1126 AC_VERB_GET_POWER_STATE, 0); 1127 1128 if (state & AC_PWRST_ERROR) 1129 return true; 1130 state = (state >> 4) & 0x0f; 1131 return (state == target_state); 1132 } 1133 EXPORT_SYMBOL_GPL(snd_hdac_check_power_state); 1134 /** 1135 * snd_hdac_sync_power_state - wait until actual power state matches 1136 * with the target state 1137 * 1138 * @codec: the HDAC device 1139 * @nid: NID to send the command 1140 * @power_state: target power state to wait for 1141 * 1142 * Return power state or PS_ERROR if codec rejects GET verb. 1143 */ 1144 unsigned int snd_hdac_sync_power_state(struct hdac_device *codec, 1145 hda_nid_t nid, unsigned int power_state) 1146 { 1147 unsigned long end_time = jiffies + msecs_to_jiffies(500); 1148 unsigned int state, actual_state, count; 1149 1150 for (count = 0; count < 500; count++) { 1151 state = snd_hdac_codec_read(codec, nid, 0, 1152 AC_VERB_GET_POWER_STATE, 0); 1153 if (state & AC_PWRST_ERROR) { 1154 msleep(20); 1155 break; 1156 } 1157 actual_state = (state >> 4) & 0x0f; 1158 if (actual_state == power_state) 1159 break; 1160 if (time_after_eq(jiffies, end_time)) 1161 break; 1162 /* wait until the codec reachs to the target state */ 1163 msleep(1); 1164 } 1165 return state; 1166 } 1167 EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state); 1168