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 fg = codec->afg ? codec->afg : codec->mfg; 408 hda_nid_t start_nid; 409 int nums, err = 0; 410 411 /* 412 * Serialize against multiple threads trying to update the sysfs 413 * widgets array. 414 */ 415 guard(mutex)(&codec->widget_lock); 416 nums = snd_hdac_get_sub_nodes(codec, fg, &start_nid); 417 if (!start_nid || nums <= 0 || nums >= 0xff) { 418 dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n", 419 fg); 420 return -EINVAL; 421 } 422 423 err = hda_widget_sysfs_reinit(codec, start_nid, nums); 424 if (err < 0) 425 return err; 426 427 codec->num_nodes = nums; 428 codec->start_nid = start_nid; 429 codec->end_nid = start_nid + nums; 430 return 0; 431 } 432 EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); 433 434 /* return CONNLIST_LEN parameter of the given widget */ 435 static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) 436 { 437 unsigned int wcaps = snd_hdac_get_wcaps(codec, nid); 438 unsigned int parm; 439 440 if (!(wcaps & AC_WCAP_CONN_LIST) && 441 snd_hdac_get_wcaps_type(wcaps) != AC_WID_VOL_KNB) 442 return 0; 443 444 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); 445 if (parm == -1) 446 parm = 0; 447 return parm; 448 } 449 450 /** 451 * snd_hdac_get_connections - get a widget connection list 452 * @codec: the codec object 453 * @nid: NID 454 * @conn_list: the array to store the results, can be NULL 455 * @max_conns: the max size of the given array 456 * 457 * Returns the number of connected widgets, zero for no connection, or a 458 * negative error code. When the number of elements don't fit with the 459 * given array size, it returns -ENOSPC. 460 * 461 * When @conn_list is NULL, it just checks the number of connections. 462 */ 463 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, 464 hda_nid_t *conn_list, int max_conns) 465 { 466 unsigned int parm; 467 int i, conn_len, conns, err; 468 unsigned int shift, num_elems, mask; 469 hda_nid_t prev_nid; 470 int null_count = 0; 471 472 parm = get_num_conns(codec, nid); 473 if (!parm) 474 return 0; 475 476 if (parm & AC_CLIST_LONG) { 477 /* long form */ 478 shift = 16; 479 num_elems = 2; 480 } else { 481 /* short form */ 482 shift = 8; 483 num_elems = 4; 484 } 485 conn_len = parm & AC_CLIST_LENGTH; 486 mask = (1 << (shift-1)) - 1; 487 488 if (!conn_len) 489 return 0; /* no connection */ 490 491 if (conn_len == 1) { 492 /* single connection */ 493 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, 494 &parm); 495 if (err < 0) 496 return err; 497 if (conn_list) 498 conn_list[0] = parm & mask; 499 return 1; 500 } 501 502 /* multi connection */ 503 conns = 0; 504 prev_nid = 0; 505 for (i = 0; i < conn_len; i++) { 506 int range_val; 507 hda_nid_t val, n; 508 509 if (i % num_elems == 0) { 510 err = snd_hdac_read(codec, nid, 511 AC_VERB_GET_CONNECT_LIST, i, 512 &parm); 513 if (err < 0) 514 return -EIO; 515 } 516 range_val = !!(parm & (1 << (shift-1))); /* ranges */ 517 val = parm & mask; 518 if (val == 0 && null_count++) { /* no second chance */ 519 dev_dbg(&codec->dev, 520 "invalid CONNECT_LIST verb %x[%i]:%x\n", 521 nid, i, parm); 522 return 0; 523 } 524 parm >>= shift; 525 if (range_val) { 526 /* ranges between the previous and this one */ 527 if (!prev_nid || prev_nid >= val) { 528 dev_warn(&codec->dev, 529 "invalid dep_range_val %x:%x\n", 530 prev_nid, val); 531 continue; 532 } 533 for (n = prev_nid + 1; n <= val; n++) { 534 if (conn_list) { 535 if (conns >= max_conns) 536 return -ENOSPC; 537 conn_list[conns] = n; 538 } 539 conns++; 540 } 541 } else { 542 if (conn_list) { 543 if (conns >= max_conns) 544 return -ENOSPC; 545 conn_list[conns] = val; 546 } 547 conns++; 548 } 549 prev_nid = val; 550 } 551 return conns; 552 } 553 EXPORT_SYMBOL_GPL(snd_hdac_get_connections); 554 555 #ifdef CONFIG_PM 556 /** 557 * snd_hdac_power_up - power up the codec 558 * @codec: the codec object 559 * 560 * This function calls the runtime PM helper to power up the given codec. 561 * Unlike snd_hdac_power_up_pm(), you should call this only for the code 562 * path that isn't included in PM path. Otherwise it gets stuck. 563 * 564 * Returns zero if successful, or a negative error code. 565 */ 566 int snd_hdac_power_up(struct hdac_device *codec) 567 { 568 return pm_runtime_get_sync(&codec->dev); 569 } 570 EXPORT_SYMBOL_GPL(snd_hdac_power_up); 571 572 /** 573 * snd_hdac_power_down - power down the codec 574 * @codec: the codec object 575 * 576 * Returns zero if successful, or a negative error code. 577 */ 578 int snd_hdac_power_down(struct hdac_device *codec) 579 { 580 struct device *dev = &codec->dev; 581 582 return pm_runtime_put_autosuspend(dev); 583 } 584 EXPORT_SYMBOL_GPL(snd_hdac_power_down); 585 586 /** 587 * snd_hdac_power_up_pm - power up the codec 588 * @codec: the codec object 589 * 590 * This function can be called in a recursive code path like init code 591 * which may be called by PM suspend/resume again. OTOH, if a power-up 592 * call must wake up the sleeper (e.g. in a kctl callback), use 593 * snd_hdac_power_up() instead. 594 * 595 * Returns zero if successful, or a negative error code. 596 */ 597 int snd_hdac_power_up_pm(struct hdac_device *codec) 598 { 599 if (!atomic_inc_not_zero(&codec->in_pm)) 600 return snd_hdac_power_up(codec); 601 return 0; 602 } 603 EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); 604 605 /* like snd_hdac_power_up_pm(), but only increment the pm count when 606 * already powered up. Returns -1 if not powered up, 1 if incremented 607 * or 0 if unchanged. Only used in hdac_regmap.c 608 */ 609 int snd_hdac_keep_power_up(struct hdac_device *codec) 610 { 611 if (!atomic_inc_not_zero(&codec->in_pm)) { 612 int ret = pm_runtime_get_if_active(&codec->dev); 613 if (!ret) 614 return -1; 615 if (ret < 0) 616 return 0; 617 } 618 return 1; 619 } 620 621 /** 622 * snd_hdac_power_down_pm - power down the codec 623 * @codec: the codec object 624 * 625 * Like snd_hdac_power_up_pm(), this function is used in a recursive 626 * code path like init code which may be called by PM suspend/resume again. 627 * 628 * Returns zero if successful, or a negative error code. 629 */ 630 int snd_hdac_power_down_pm(struct hdac_device *codec) 631 { 632 if (atomic_dec_if_positive(&codec->in_pm) < 0) 633 return snd_hdac_power_down(codec); 634 return 0; 635 } 636 EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); 637 #endif 638 639 /* codec vendor labels */ 640 struct hda_vendor_id { 641 unsigned int id; 642 const char *name; 643 }; 644 645 static const struct hda_vendor_id hda_vendor_ids[] = { 646 { 0x0014, "Loongson" }, 647 { 0x1002, "ATI" }, 648 { 0x1013, "Cirrus Logic" }, 649 { 0x1057, "Motorola" }, 650 { 0x1095, "Silicon Image" }, 651 { 0x10de, "Nvidia" }, 652 { 0x10ec, "Realtek" }, 653 { 0x1102, "Creative" }, 654 { 0x1106, "VIA" }, 655 { 0x111d, "IDT" }, 656 { 0x11c1, "LSI" }, 657 { 0x11d4, "Analog Devices" }, 658 { 0x13f6, "C-Media" }, 659 { 0x14f1, "Conexant" }, 660 { 0x17e8, "Chrontel" }, 661 { 0x1854, "LG" }, 662 { 0x19e5, "Huawei" }, 663 { 0x1aec, "Wolfson Microelectronics" }, 664 { 0x1af4, "QEMU" }, 665 { 0x1fa8, "Senarytech" }, 666 { 0x434d, "C-Media" }, 667 { 0x4c54, "Lisuan" }, 668 { 0x8086, "Intel" }, 669 { 0x8384, "SigmaTel" }, 670 {} /* terminator */ 671 }; 672 673 /* store the codec vendor name */ 674 static int get_codec_vendor_name(struct hdac_device *codec) 675 { 676 const struct hda_vendor_id *c; 677 u16 vendor_id = codec->vendor_id >> 16; 678 679 for (c = hda_vendor_ids; c->id; c++) { 680 if (c->id == vendor_id) { 681 codec->vendor_name = kstrdup(c->name, GFP_KERNEL); 682 return codec->vendor_name ? 0 : -ENOMEM; 683 } 684 } 685 686 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); 687 return codec->vendor_name ? 0 : -ENOMEM; 688 } 689 690 /* 691 * stream formats 692 */ 693 struct hda_rate_tbl { 694 unsigned int hz; 695 unsigned int alsa_bits; 696 unsigned int hda_fmt; 697 }; 698 699 /* rate = base * mult / div */ 700 #define HDA_RATE(base, mult, div) \ 701 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ 702 (((div) - 1) << AC_FMT_DIV_SHIFT)) 703 704 static const struct hda_rate_tbl rate_bits[] = { 705 /* rate in Hz, ALSA rate bitmask, HDA format value */ 706 707 /* autodetected value used in snd_hda_query_supported_pcm */ 708 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, 709 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, 710 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, 711 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, 712 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, 713 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, 714 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, 715 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, 716 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, 717 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, 718 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, 719 #define AC_PAR_PCM_RATE_BITS 11 720 /* up to bits 10, 384kHZ isn't supported properly */ 721 722 /* not autodetected value */ 723 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, 724 725 { 0 } /* terminator */ 726 }; 727 728 static snd_pcm_format_t snd_hdac_format_normalize(snd_pcm_format_t format) 729 { 730 switch (format) { 731 case SNDRV_PCM_FORMAT_S20_LE: 732 case SNDRV_PCM_FORMAT_S24_LE: 733 return SNDRV_PCM_FORMAT_S32_LE; 734 735 case SNDRV_PCM_FORMAT_U20_LE: 736 case SNDRV_PCM_FORMAT_U24_LE: 737 return SNDRV_PCM_FORMAT_U32_LE; 738 739 case SNDRV_PCM_FORMAT_S20_BE: 740 case SNDRV_PCM_FORMAT_S24_BE: 741 return SNDRV_PCM_FORMAT_S32_BE; 742 743 case SNDRV_PCM_FORMAT_U20_BE: 744 case SNDRV_PCM_FORMAT_U24_BE: 745 return SNDRV_PCM_FORMAT_U32_BE; 746 747 default: 748 return format; 749 } 750 } 751 752 /** 753 * snd_hdac_stream_format_bits - obtain bits per sample value. 754 * @format: the PCM format. 755 * @subformat: the PCM subformat. 756 * @maxbits: the maximum bits per sample. 757 * 758 * Return: The number of bits per sample. 759 */ 760 unsigned int snd_hdac_stream_format_bits(snd_pcm_format_t format, snd_pcm_subformat_t subformat, 761 unsigned int maxbits) 762 { 763 struct snd_pcm_hw_params params; 764 unsigned int bits; 765 766 memset(¶ms, 0, sizeof(params)); 767 768 params_set_format(¶ms, snd_hdac_format_normalize(format)); 769 snd_mask_set(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_SUBFORMAT), 770 subformat); 771 772 bits = snd_pcm_hw_params_bits(¶ms); 773 if (maxbits) 774 return min(bits, maxbits); 775 return bits; 776 } 777 EXPORT_SYMBOL_GPL(snd_hdac_stream_format_bits); 778 779 /** 780 * snd_hdac_stream_format - convert format parameters to SDxFMT value. 781 * @channels: the number of channels. 782 * @bits: bits per sample. 783 * @rate: the sample rate. 784 * 785 * Return: The format bitset or zero if invalid. 786 */ 787 unsigned int snd_hdac_stream_format(unsigned int channels, unsigned int bits, unsigned int rate) 788 { 789 unsigned int val = 0; 790 int i; 791 792 for (i = 0; rate_bits[i].hz; i++) { 793 if (rate_bits[i].hz == rate) { 794 val = rate_bits[i].hda_fmt; 795 break; 796 } 797 } 798 799 if (!rate_bits[i].hz) 800 return 0; 801 802 if (channels == 0 || channels > 16) 803 return 0; 804 val |= channels - 1; 805 806 switch (bits) { 807 case 8: 808 val |= AC_FMT_BITS_8; 809 break; 810 case 16: 811 val |= AC_FMT_BITS_16; 812 break; 813 case 20: 814 val |= AC_FMT_BITS_20; 815 break; 816 case 24: 817 val |= AC_FMT_BITS_24; 818 break; 819 case 32: 820 val |= AC_FMT_BITS_32; 821 break; 822 default: 823 return 0; 824 } 825 826 return val; 827 } 828 EXPORT_SYMBOL_GPL(snd_hdac_stream_format); 829 830 /** 831 * snd_hdac_spdif_stream_format - convert format parameters to SDxFMT value. 832 * @channels: the number of channels. 833 * @bits: bits per sample. 834 * @rate: the sample rate. 835 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant). 836 * 837 * Return: The format bitset or zero if invalid. 838 */ 839 unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bits, 840 unsigned int rate, unsigned short spdif_ctls) 841 { 842 unsigned int val = snd_hdac_stream_format(channels, bits, rate); 843 844 if (val && spdif_ctls & AC_DIG1_NONAUDIO) 845 val |= AC_FMT_TYPE_NON_PCM; 846 847 return val; 848 } 849 EXPORT_SYMBOL_GPL(snd_hdac_spdif_stream_format); 850 851 static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) 852 { 853 unsigned int val = 0; 854 855 if (nid != codec->afg && 856 (snd_hdac_get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) 857 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); 858 if (!val || val == -1) 859 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); 860 if (!val || val == -1) 861 return 0; 862 return val; 863 } 864 865 static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) 866 { 867 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); 868 869 if (!streams || streams == -1) 870 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); 871 if (!streams || streams == -1) 872 return 0; 873 return streams; 874 } 875 876 /** 877 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats 878 * @codec: the codec object 879 * @nid: NID to query 880 * @ratesp: the pointer to store the detected rate bitflags 881 * @formatsp: the pointer to store the detected formats 882 * @subformatsp: the pointer to store the detected subformats for S32_LE format 883 * @bpsp: the pointer to store the detected format widths 884 * 885 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp, 886 * @subformatsp or @bpsp argument is ignored. 887 * 888 * Returns 0 if successful, otherwise a negative error code. 889 */ 890 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, 891 u32 *ratesp, u64 *formatsp, u32 *subformatsp, 892 unsigned int *bpsp) 893 { 894 unsigned int i, val, wcaps; 895 896 wcaps = snd_hdac_get_wcaps(codec, nid); 897 val = query_pcm_param(codec, nid); 898 899 if (ratesp) { 900 u32 rates = 0; 901 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { 902 if (val & (1 << i)) 903 rates |= rate_bits[i].alsa_bits; 904 } 905 if (rates == 0) { 906 dev_err(&codec->dev, 907 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", 908 nid, val, 909 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); 910 return -EIO; 911 } 912 *ratesp = rates; 913 } 914 915 if (formatsp || subformatsp || bpsp) { 916 unsigned int streams, bps; 917 u32 subformats = 0; 918 u64 formats = 0; 919 920 streams = query_stream_param(codec, nid); 921 if (!streams) 922 return -EIO; 923 924 bps = 0; 925 if (streams & AC_SUPFMT_PCM) { 926 if (val & AC_SUPPCM_BITS_8) { 927 formats |= SNDRV_PCM_FMTBIT_U8; 928 bps = 8; 929 } 930 if (val & AC_SUPPCM_BITS_16) { 931 formats |= SNDRV_PCM_FMTBIT_S16_LE; 932 bps = 16; 933 } 934 if (val & AC_SUPPCM_BITS_20) { 935 formats |= SNDRV_PCM_FMTBIT_S32_LE; 936 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_20; 937 bps = 20; 938 } 939 if (val & AC_SUPPCM_BITS_24) { 940 formats |= SNDRV_PCM_FMTBIT_S32_LE; 941 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_24; 942 bps = 24; 943 } 944 if (val & AC_SUPPCM_BITS_32) { 945 if (wcaps & AC_WCAP_DIGITAL) { 946 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; 947 } else { 948 formats |= SNDRV_PCM_FMTBIT_S32_LE; 949 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_MAX; 950 bps = 32; 951 } 952 } 953 } 954 #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ 955 if (streams & AC_SUPFMT_FLOAT32) { 956 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; 957 if (!bps) 958 bps = 32; 959 } 960 #endif 961 if (streams == AC_SUPFMT_AC3) { 962 /* should be exclusive */ 963 /* temporary hack: we have still no proper support 964 * for the direct AC3 stream... 965 */ 966 formats |= SNDRV_PCM_FMTBIT_U8; 967 bps = 8; 968 } 969 if (formats == 0) { 970 dev_err(&codec->dev, 971 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", 972 nid, val, 973 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, 974 streams); 975 return -EIO; 976 } 977 if (formatsp) 978 *formatsp = formats; 979 if (subformatsp) 980 *subformatsp = subformats; 981 if (bpsp) 982 *bpsp = bps; 983 } 984 985 return 0; 986 } 987 EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); 988 989 /** 990 * snd_hdac_is_supported_format - Check the validity of the format 991 * @codec: the codec object 992 * @nid: NID to check 993 * @format: the HD-audio format value to check 994 * 995 * Check whether the given node supports the format value. 996 * 997 * Returns true if supported, false if not. 998 */ 999 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, 1000 unsigned int format) 1001 { 1002 int i; 1003 unsigned int val = 0, rate, stream; 1004 1005 val = query_pcm_param(codec, nid); 1006 if (!val) 1007 return false; 1008 1009 rate = format & 0xff00; 1010 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) 1011 if (rate_bits[i].hda_fmt == rate) { 1012 if (val & (1 << i)) 1013 break; 1014 return false; 1015 } 1016 if (i >= AC_PAR_PCM_RATE_BITS) 1017 return false; 1018 1019 stream = query_stream_param(codec, nid); 1020 if (!stream) 1021 return false; 1022 1023 if (stream & AC_SUPFMT_PCM) { 1024 switch (format & 0xf0) { 1025 case 0x00: 1026 if (!(val & AC_SUPPCM_BITS_8)) 1027 return false; 1028 break; 1029 case 0x10: 1030 if (!(val & AC_SUPPCM_BITS_16)) 1031 return false; 1032 break; 1033 case 0x20: 1034 if (!(val & AC_SUPPCM_BITS_20)) 1035 return false; 1036 break; 1037 case 0x30: 1038 if (!(val & AC_SUPPCM_BITS_24)) 1039 return false; 1040 break; 1041 case 0x40: 1042 if (!(val & AC_SUPPCM_BITS_32)) 1043 return false; 1044 break; 1045 default: 1046 return false; 1047 } 1048 } else { 1049 /* FIXME: check for float32 and AC3? */ 1050 } 1051 1052 return true; 1053 } 1054 EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); 1055 1056 static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid, 1057 int flags, unsigned int verb, unsigned int parm) 1058 { 1059 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 1060 unsigned int res; 1061 1062 if (snd_hdac_exec_verb(hdac, cmd, flags, &res)) 1063 return -1; 1064 1065 return res; 1066 } 1067 1068 static int codec_write(struct hdac_device *hdac, hda_nid_t nid, 1069 int flags, unsigned int verb, unsigned int parm) 1070 { 1071 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 1072 1073 return snd_hdac_exec_verb(hdac, cmd, flags, NULL); 1074 } 1075 1076 /** 1077 * snd_hdac_codec_read - send a command and get the response 1078 * @hdac: the HDAC device 1079 * @nid: NID to send the command 1080 * @flags: optional bit flags 1081 * @verb: the verb to send 1082 * @parm: the parameter for the verb 1083 * 1084 * Send a single command and read the corresponding response. 1085 * 1086 * Returns the obtained response value, or -1 for an error. 1087 */ 1088 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, 1089 int flags, unsigned int verb, unsigned int parm) 1090 { 1091 return codec_read(hdac, nid, flags, verb, parm); 1092 } 1093 EXPORT_SYMBOL_GPL(snd_hdac_codec_read); 1094 1095 /** 1096 * snd_hdac_codec_write - send a single command without waiting for response 1097 * @hdac: the HDAC device 1098 * @nid: NID to send the command 1099 * @flags: optional bit flags 1100 * @verb: the verb to send 1101 * @parm: the parameter for the verb 1102 * 1103 * Send a single command without waiting for response. 1104 * 1105 * Returns 0 if successful, or a negative error code. 1106 */ 1107 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, 1108 int flags, unsigned int verb, unsigned int parm) 1109 { 1110 return codec_write(hdac, nid, flags, verb, parm); 1111 } 1112 EXPORT_SYMBOL_GPL(snd_hdac_codec_write); 1113 1114 /** 1115 * snd_hdac_check_power_state - check whether the actual power state matches 1116 * with the target state 1117 * 1118 * @hdac: the HDAC device 1119 * @nid: NID to send the command 1120 * @target_state: target state to check for 1121 * 1122 * Return true if state matches, false if not 1123 */ 1124 bool snd_hdac_check_power_state(struct hdac_device *hdac, 1125 hda_nid_t nid, unsigned int target_state) 1126 { 1127 unsigned int state = codec_read(hdac, nid, 0, 1128 AC_VERB_GET_POWER_STATE, 0); 1129 1130 if (state & AC_PWRST_ERROR) 1131 return true; 1132 state = (state >> 4) & 0x0f; 1133 return (state == target_state); 1134 } 1135 EXPORT_SYMBOL_GPL(snd_hdac_check_power_state); 1136 /** 1137 * snd_hdac_sync_power_state - wait until actual power state matches 1138 * with the target state 1139 * 1140 * @codec: the HDAC device 1141 * @nid: NID to send the command 1142 * @power_state: target power state to wait for 1143 * 1144 * Return power state or PS_ERROR if codec rejects GET verb. 1145 */ 1146 unsigned int snd_hdac_sync_power_state(struct hdac_device *codec, 1147 hda_nid_t nid, unsigned int power_state) 1148 { 1149 unsigned long end_time = jiffies + msecs_to_jiffies(500); 1150 unsigned int state, actual_state, count; 1151 1152 for (count = 0; count < 500; count++) { 1153 state = snd_hdac_codec_read(codec, nid, 0, 1154 AC_VERB_GET_POWER_STATE, 0); 1155 if (state & AC_PWRST_ERROR) { 1156 msleep(20); 1157 break; 1158 } 1159 actual_state = (state >> 4) & 0x0f; 1160 if (actual_state == power_state) 1161 break; 1162 if (time_after_eq(jiffies, end_time)) 1163 break; 1164 /* wait until the codec reachs to the target state */ 1165 msleep(1); 1166 } 1167 return state; 1168 } 1169 EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state); 1170