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 mutex_lock(&codec->widget_lock); 151 err = hda_widget_sysfs_init(codec); 152 mutex_unlock(&codec->widget_lock); 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 mutex_lock(&codec->widget_lock); 170 hda_widget_sysfs_exit(codec); 171 mutex_unlock(&codec->widget_lock); 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 mutex_lock(&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 err = -EINVAL; 420 goto unlock; 421 } 422 423 err = hda_widget_sysfs_reinit(codec, start_nid, nums); 424 if (err < 0) 425 goto unlock; 426 427 codec->num_nodes = nums; 428 codec->start_nid = start_nid; 429 codec->end_nid = start_nid + nums; 430 unlock: 431 mutex_unlock(&codec->widget_lock); 432 return err; 433 } 434 EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); 435 436 /* return CONNLIST_LEN parameter of the given widget */ 437 static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) 438 { 439 unsigned int wcaps = get_wcaps(codec, nid); 440 unsigned int parm; 441 442 if (!(wcaps & AC_WCAP_CONN_LIST) && 443 get_wcaps_type(wcaps) != AC_WID_VOL_KNB) 444 return 0; 445 446 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); 447 if (parm == -1) 448 parm = 0; 449 return parm; 450 } 451 452 /** 453 * snd_hdac_get_connections - get a widget connection list 454 * @codec: the codec object 455 * @nid: NID 456 * @conn_list: the array to store the results, can be NULL 457 * @max_conns: the max size of the given array 458 * 459 * Returns the number of connected widgets, zero for no connection, or a 460 * negative error code. When the number of elements don't fit with the 461 * given array size, it returns -ENOSPC. 462 * 463 * When @conn_list is NULL, it just checks the number of connections. 464 */ 465 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, 466 hda_nid_t *conn_list, int max_conns) 467 { 468 unsigned int parm; 469 int i, conn_len, conns, err; 470 unsigned int shift, num_elems, mask; 471 hda_nid_t prev_nid; 472 int null_count = 0; 473 474 parm = get_num_conns(codec, nid); 475 if (!parm) 476 return 0; 477 478 if (parm & AC_CLIST_LONG) { 479 /* long form */ 480 shift = 16; 481 num_elems = 2; 482 } else { 483 /* short form */ 484 shift = 8; 485 num_elems = 4; 486 } 487 conn_len = parm & AC_CLIST_LENGTH; 488 mask = (1 << (shift-1)) - 1; 489 490 if (!conn_len) 491 return 0; /* no connection */ 492 493 if (conn_len == 1) { 494 /* single connection */ 495 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, 496 &parm); 497 if (err < 0) 498 return err; 499 if (conn_list) 500 conn_list[0] = parm & mask; 501 return 1; 502 } 503 504 /* multi connection */ 505 conns = 0; 506 prev_nid = 0; 507 for (i = 0; i < conn_len; i++) { 508 int range_val; 509 hda_nid_t val, n; 510 511 if (i % num_elems == 0) { 512 err = snd_hdac_read(codec, nid, 513 AC_VERB_GET_CONNECT_LIST, i, 514 &parm); 515 if (err < 0) 516 return -EIO; 517 } 518 range_val = !!(parm & (1 << (shift-1))); /* ranges */ 519 val = parm & mask; 520 if (val == 0 && null_count++) { /* no second chance */ 521 dev_dbg(&codec->dev, 522 "invalid CONNECT_LIST verb %x[%i]:%x\n", 523 nid, i, parm); 524 return 0; 525 } 526 parm >>= shift; 527 if (range_val) { 528 /* ranges between the previous and this one */ 529 if (!prev_nid || prev_nid >= val) { 530 dev_warn(&codec->dev, 531 "invalid dep_range_val %x:%x\n", 532 prev_nid, val); 533 continue; 534 } 535 for (n = prev_nid + 1; n <= val; n++) { 536 if (conn_list) { 537 if (conns >= max_conns) 538 return -ENOSPC; 539 conn_list[conns] = n; 540 } 541 conns++; 542 } 543 } else { 544 if (conn_list) { 545 if (conns >= max_conns) 546 return -ENOSPC; 547 conn_list[conns] = val; 548 } 549 conns++; 550 } 551 prev_nid = val; 552 } 553 return conns; 554 } 555 EXPORT_SYMBOL_GPL(snd_hdac_get_connections); 556 557 #ifdef CONFIG_PM 558 /** 559 * snd_hdac_power_up - power up the codec 560 * @codec: the codec object 561 * 562 * This function calls the runtime PM helper to power up the given codec. 563 * Unlike snd_hdac_power_up_pm(), you should call this only for the code 564 * path that isn't included in PM path. Otherwise it gets stuck. 565 * 566 * Returns zero if successful, or a negative error code. 567 */ 568 int snd_hdac_power_up(struct hdac_device *codec) 569 { 570 return pm_runtime_get_sync(&codec->dev); 571 } 572 EXPORT_SYMBOL_GPL(snd_hdac_power_up); 573 574 /** 575 * snd_hdac_power_down - power down the codec 576 * @codec: the codec object 577 * 578 * Returns zero if successful, or a negative error code. 579 */ 580 int snd_hdac_power_down(struct hdac_device *codec) 581 { 582 struct device *dev = &codec->dev; 583 584 pm_runtime_mark_last_busy(dev); 585 return pm_runtime_put_autosuspend(dev); 586 } 587 EXPORT_SYMBOL_GPL(snd_hdac_power_down); 588 589 /** 590 * snd_hdac_power_up_pm - power up the codec 591 * @codec: the codec object 592 * 593 * This function can be called in a recursive code path like init code 594 * which may be called by PM suspend/resume again. OTOH, if a power-up 595 * call must wake up the sleeper (e.g. in a kctl callback), use 596 * snd_hdac_power_up() instead. 597 * 598 * Returns zero if successful, or a negative error code. 599 */ 600 int snd_hdac_power_up_pm(struct hdac_device *codec) 601 { 602 if (!atomic_inc_not_zero(&codec->in_pm)) 603 return snd_hdac_power_up(codec); 604 return 0; 605 } 606 EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); 607 608 /* like snd_hdac_power_up_pm(), but only increment the pm count when 609 * already powered up. Returns -1 if not powered up, 1 if incremented 610 * or 0 if unchanged. Only used in hdac_regmap.c 611 */ 612 int snd_hdac_keep_power_up(struct hdac_device *codec) 613 { 614 if (!atomic_inc_not_zero(&codec->in_pm)) { 615 int ret = pm_runtime_get_if_active(&codec->dev); 616 if (!ret) 617 return -1; 618 if (ret < 0) 619 return 0; 620 } 621 return 1; 622 } 623 624 /** 625 * snd_hdac_power_down_pm - power down the codec 626 * @codec: the codec object 627 * 628 * Like snd_hdac_power_up_pm(), this function is used in a recursive 629 * code path like init code which may be called by PM suspend/resume again. 630 * 631 * Returns zero if successful, or a negative error code. 632 */ 633 int snd_hdac_power_down_pm(struct hdac_device *codec) 634 { 635 if (atomic_dec_if_positive(&codec->in_pm) < 0) 636 return snd_hdac_power_down(codec); 637 return 0; 638 } 639 EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); 640 #endif 641 642 /* codec vendor labels */ 643 struct hda_vendor_id { 644 unsigned int id; 645 const char *name; 646 }; 647 648 static const struct hda_vendor_id hda_vendor_ids[] = { 649 { 0x0014, "Loongson" }, 650 { 0x1002, "ATI" }, 651 { 0x1013, "Cirrus Logic" }, 652 { 0x1057, "Motorola" }, 653 { 0x1095, "Silicon Image" }, 654 { 0x10de, "Nvidia" }, 655 { 0x10ec, "Realtek" }, 656 { 0x1102, "Creative" }, 657 { 0x1106, "VIA" }, 658 { 0x111d, "IDT" }, 659 { 0x11c1, "LSI" }, 660 { 0x11d4, "Analog Devices" }, 661 { 0x13f6, "C-Media" }, 662 { 0x14f1, "Conexant" }, 663 { 0x17e8, "Chrontel" }, 664 { 0x1854, "LG" }, 665 { 0x19e5, "Huawei" }, 666 { 0x1aec, "Wolfson Microelectronics" }, 667 { 0x1af4, "QEMU" }, 668 { 0x1fa8, "Senarytech" }, 669 { 0x434d, "C-Media" }, 670 { 0x8086, "Intel" }, 671 { 0x8384, "SigmaTel" }, 672 {} /* terminator */ 673 }; 674 675 /* store the codec vendor name */ 676 static int get_codec_vendor_name(struct hdac_device *codec) 677 { 678 const struct hda_vendor_id *c; 679 u16 vendor_id = codec->vendor_id >> 16; 680 681 for (c = hda_vendor_ids; c->id; c++) { 682 if (c->id == vendor_id) { 683 codec->vendor_name = kstrdup(c->name, GFP_KERNEL); 684 return codec->vendor_name ? 0 : -ENOMEM; 685 } 686 } 687 688 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); 689 return codec->vendor_name ? 0 : -ENOMEM; 690 } 691 692 /* 693 * stream formats 694 */ 695 struct hda_rate_tbl { 696 unsigned int hz; 697 unsigned int alsa_bits; 698 unsigned int hda_fmt; 699 }; 700 701 /* rate = base * mult / div */ 702 #define HDA_RATE(base, mult, div) \ 703 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ 704 (((div) - 1) << AC_FMT_DIV_SHIFT)) 705 706 static const struct hda_rate_tbl rate_bits[] = { 707 /* rate in Hz, ALSA rate bitmask, HDA format value */ 708 709 /* autodetected value used in snd_hda_query_supported_pcm */ 710 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, 711 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, 712 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, 713 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, 714 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, 715 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, 716 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, 717 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, 718 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, 719 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, 720 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, 721 #define AC_PAR_PCM_RATE_BITS 11 722 /* up to bits 10, 384kHZ isn't supported properly */ 723 724 /* not autodetected value */ 725 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, 726 727 { 0 } /* terminator */ 728 }; 729 730 static snd_pcm_format_t snd_hdac_format_normalize(snd_pcm_format_t format) 731 { 732 switch (format) { 733 case SNDRV_PCM_FORMAT_S20_LE: 734 case SNDRV_PCM_FORMAT_S24_LE: 735 return SNDRV_PCM_FORMAT_S32_LE; 736 737 case SNDRV_PCM_FORMAT_U20_LE: 738 case SNDRV_PCM_FORMAT_U24_LE: 739 return SNDRV_PCM_FORMAT_U32_LE; 740 741 case SNDRV_PCM_FORMAT_S20_BE: 742 case SNDRV_PCM_FORMAT_S24_BE: 743 return SNDRV_PCM_FORMAT_S32_BE; 744 745 case SNDRV_PCM_FORMAT_U20_BE: 746 case SNDRV_PCM_FORMAT_U24_BE: 747 return SNDRV_PCM_FORMAT_U32_BE; 748 749 default: 750 return format; 751 } 752 } 753 754 /** 755 * snd_hdac_stream_format_bits - obtain bits per sample value. 756 * @format: the PCM format. 757 * @subformat: the PCM subformat. 758 * @maxbits: the maximum bits per sample. 759 * 760 * Return: The number of bits per sample. 761 */ 762 unsigned int snd_hdac_stream_format_bits(snd_pcm_format_t format, snd_pcm_subformat_t subformat, 763 unsigned int maxbits) 764 { 765 struct snd_pcm_hw_params params; 766 unsigned int bits; 767 768 memset(¶ms, 0, sizeof(params)); 769 770 params_set_format(¶ms, snd_hdac_format_normalize(format)); 771 snd_mask_set(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_SUBFORMAT), 772 (__force unsigned int)subformat); 773 774 bits = snd_pcm_hw_params_bits(¶ms); 775 if (maxbits) 776 return min(bits, maxbits); 777 return bits; 778 } 779 EXPORT_SYMBOL_GPL(snd_hdac_stream_format_bits); 780 781 /** 782 * snd_hdac_stream_format - convert format parameters to SDxFMT value. 783 * @channels: the number of channels. 784 * @bits: bits per sample. 785 * @rate: the sample rate. 786 * 787 * Return: The format bitset or zero if invalid. 788 */ 789 unsigned int snd_hdac_stream_format(unsigned int channels, unsigned int bits, unsigned int rate) 790 { 791 unsigned int val = 0; 792 int i; 793 794 for (i = 0; rate_bits[i].hz; i++) { 795 if (rate_bits[i].hz == rate) { 796 val = rate_bits[i].hda_fmt; 797 break; 798 } 799 } 800 801 if (!rate_bits[i].hz) 802 return 0; 803 804 if (channels == 0 || channels > 8) 805 return 0; 806 val |= channels - 1; 807 808 switch (bits) { 809 case 8: 810 val |= AC_FMT_BITS_8; 811 break; 812 case 16: 813 val |= AC_FMT_BITS_16; 814 break; 815 case 20: 816 val |= AC_FMT_BITS_20; 817 break; 818 case 24: 819 val |= AC_FMT_BITS_24; 820 break; 821 case 32: 822 val |= AC_FMT_BITS_32; 823 break; 824 default: 825 return 0; 826 } 827 828 return val; 829 } 830 EXPORT_SYMBOL_GPL(snd_hdac_stream_format); 831 832 /** 833 * snd_hdac_spdif_stream_format - convert format parameters to SDxFMT value. 834 * @channels: the number of channels. 835 * @bits: bits per sample. 836 * @rate: the sample rate. 837 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant). 838 * 839 * Return: The format bitset or zero if invalid. 840 */ 841 unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bits, 842 unsigned int rate, unsigned short spdif_ctls) 843 { 844 unsigned int val = snd_hdac_stream_format(channels, bits, rate); 845 846 if (val && spdif_ctls & AC_DIG1_NONAUDIO) 847 val |= AC_FMT_TYPE_NON_PCM; 848 849 return val; 850 } 851 EXPORT_SYMBOL_GPL(snd_hdac_spdif_stream_format); 852 853 static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) 854 { 855 unsigned int val = 0; 856 857 if (nid != codec->afg && 858 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) 859 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); 860 if (!val || val == -1) 861 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); 862 if (!val || val == -1) 863 return 0; 864 return val; 865 } 866 867 static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) 868 { 869 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); 870 871 if (!streams || streams == -1) 872 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); 873 if (!streams || streams == -1) 874 return 0; 875 return streams; 876 } 877 878 /** 879 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats 880 * @codec: the codec object 881 * @nid: NID to query 882 * @ratesp: the pointer to store the detected rate bitflags 883 * @formatsp: the pointer to store the detected formats 884 * @subformatsp: the pointer to store the detected subformats for S32_LE format 885 * @bpsp: the pointer to store the detected format widths 886 * 887 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp, 888 * @subformatsp or @bpsp argument is ignored. 889 * 890 * Returns 0 if successful, otherwise a negative error code. 891 */ 892 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, 893 u32 *ratesp, u64 *formatsp, u32 *subformatsp, 894 unsigned int *bpsp) 895 { 896 unsigned int i, val, wcaps; 897 898 wcaps = get_wcaps(codec, nid); 899 val = query_pcm_param(codec, nid); 900 901 if (ratesp) { 902 u32 rates = 0; 903 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { 904 if (val & (1 << i)) 905 rates |= rate_bits[i].alsa_bits; 906 } 907 if (rates == 0) { 908 dev_err(&codec->dev, 909 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", 910 nid, val, 911 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); 912 return -EIO; 913 } 914 *ratesp = rates; 915 } 916 917 if (formatsp || subformatsp || bpsp) { 918 unsigned int streams, bps; 919 u32 subformats = 0; 920 u64 formats = 0; 921 922 streams = query_stream_param(codec, nid); 923 if (!streams) 924 return -EIO; 925 926 bps = 0; 927 if (streams & AC_SUPFMT_PCM) { 928 if (val & AC_SUPPCM_BITS_8) { 929 formats |= SNDRV_PCM_FMTBIT_U8; 930 bps = 8; 931 } 932 if (val & AC_SUPPCM_BITS_16) { 933 formats |= SNDRV_PCM_FMTBIT_S16_LE; 934 bps = 16; 935 } 936 if (val & AC_SUPPCM_BITS_20) { 937 formats |= SNDRV_PCM_FMTBIT_S32_LE; 938 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_20; 939 bps = 20; 940 } 941 if (val & AC_SUPPCM_BITS_24) { 942 formats |= SNDRV_PCM_FMTBIT_S32_LE; 943 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_24; 944 bps = 24; 945 } 946 if (val & AC_SUPPCM_BITS_32) { 947 if (wcaps & AC_WCAP_DIGITAL) { 948 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; 949 } else { 950 formats |= SNDRV_PCM_FMTBIT_S32_LE; 951 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_MAX; 952 bps = 32; 953 } 954 } 955 } 956 #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ 957 if (streams & AC_SUPFMT_FLOAT32) { 958 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; 959 if (!bps) 960 bps = 32; 961 } 962 #endif 963 if (streams == AC_SUPFMT_AC3) { 964 /* should be exclusive */ 965 /* temporary hack: we have still no proper support 966 * for the direct AC3 stream... 967 */ 968 formats |= SNDRV_PCM_FMTBIT_U8; 969 bps = 8; 970 } 971 if (formats == 0) { 972 dev_err(&codec->dev, 973 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", 974 nid, val, 975 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, 976 streams); 977 return -EIO; 978 } 979 if (formatsp) 980 *formatsp = formats; 981 if (subformatsp) 982 *subformatsp = subformats; 983 if (bpsp) 984 *bpsp = bps; 985 } 986 987 return 0; 988 } 989 EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); 990 991 /** 992 * snd_hdac_is_supported_format - Check the validity of the format 993 * @codec: the codec object 994 * @nid: NID to check 995 * @format: the HD-audio format value to check 996 * 997 * Check whether the given node supports the format value. 998 * 999 * Returns true if supported, false if not. 1000 */ 1001 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, 1002 unsigned int format) 1003 { 1004 int i; 1005 unsigned int val = 0, rate, stream; 1006 1007 val = query_pcm_param(codec, nid); 1008 if (!val) 1009 return false; 1010 1011 rate = format & 0xff00; 1012 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) 1013 if (rate_bits[i].hda_fmt == rate) { 1014 if (val & (1 << i)) 1015 break; 1016 return false; 1017 } 1018 if (i >= AC_PAR_PCM_RATE_BITS) 1019 return false; 1020 1021 stream = query_stream_param(codec, nid); 1022 if (!stream) 1023 return false; 1024 1025 if (stream & AC_SUPFMT_PCM) { 1026 switch (format & 0xf0) { 1027 case 0x00: 1028 if (!(val & AC_SUPPCM_BITS_8)) 1029 return false; 1030 break; 1031 case 0x10: 1032 if (!(val & AC_SUPPCM_BITS_16)) 1033 return false; 1034 break; 1035 case 0x20: 1036 if (!(val & AC_SUPPCM_BITS_20)) 1037 return false; 1038 break; 1039 case 0x30: 1040 if (!(val & AC_SUPPCM_BITS_24)) 1041 return false; 1042 break; 1043 case 0x40: 1044 if (!(val & AC_SUPPCM_BITS_32)) 1045 return false; 1046 break; 1047 default: 1048 return false; 1049 } 1050 } else { 1051 /* FIXME: check for float32 and AC3? */ 1052 } 1053 1054 return true; 1055 } 1056 EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); 1057 1058 static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid, 1059 int flags, unsigned int verb, unsigned int parm) 1060 { 1061 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 1062 unsigned int res; 1063 1064 if (snd_hdac_exec_verb(hdac, cmd, flags, &res)) 1065 return -1; 1066 1067 return res; 1068 } 1069 1070 static int codec_write(struct hdac_device *hdac, hda_nid_t nid, 1071 int flags, unsigned int verb, unsigned int parm) 1072 { 1073 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 1074 1075 return snd_hdac_exec_verb(hdac, cmd, flags, NULL); 1076 } 1077 1078 /** 1079 * snd_hdac_codec_read - send a command and get the response 1080 * @hdac: the HDAC device 1081 * @nid: NID to send the command 1082 * @flags: optional bit flags 1083 * @verb: the verb to send 1084 * @parm: the parameter for the verb 1085 * 1086 * Send a single command and read the corresponding response. 1087 * 1088 * Returns the obtained response value, or -1 for an error. 1089 */ 1090 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, 1091 int flags, unsigned int verb, unsigned int parm) 1092 { 1093 return codec_read(hdac, nid, flags, verb, parm); 1094 } 1095 EXPORT_SYMBOL_GPL(snd_hdac_codec_read); 1096 1097 /** 1098 * snd_hdac_codec_write - send a single command without waiting for response 1099 * @hdac: the HDAC device 1100 * @nid: NID to send the command 1101 * @flags: optional bit flags 1102 * @verb: the verb to send 1103 * @parm: the parameter for the verb 1104 * 1105 * Send a single command without waiting for response. 1106 * 1107 * Returns 0 if successful, or a negative error code. 1108 */ 1109 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, 1110 int flags, unsigned int verb, unsigned int parm) 1111 { 1112 return codec_write(hdac, nid, flags, verb, parm); 1113 } 1114 EXPORT_SYMBOL_GPL(snd_hdac_codec_write); 1115 1116 /** 1117 * snd_hdac_check_power_state - check whether the actual power state matches 1118 * with the target state 1119 * 1120 * @hdac: the HDAC device 1121 * @nid: NID to send the command 1122 * @target_state: target state to check for 1123 * 1124 * Return true if state matches, false if not 1125 */ 1126 bool snd_hdac_check_power_state(struct hdac_device *hdac, 1127 hda_nid_t nid, unsigned int target_state) 1128 { 1129 unsigned int state = codec_read(hdac, nid, 0, 1130 AC_VERB_GET_POWER_STATE, 0); 1131 1132 if (state & AC_PWRST_ERROR) 1133 return true; 1134 state = (state >> 4) & 0x0f; 1135 return (state == target_state); 1136 } 1137 EXPORT_SYMBOL_GPL(snd_hdac_check_power_state); 1138 /** 1139 * snd_hdac_sync_power_state - wait until actual power state matches 1140 * with the target state 1141 * 1142 * @codec: the HDAC device 1143 * @nid: NID to send the command 1144 * @power_state: target power state to wait for 1145 * 1146 * Return power state or PS_ERROR if codec rejects GET verb. 1147 */ 1148 unsigned int snd_hdac_sync_power_state(struct hdac_device *codec, 1149 hda_nid_t nid, unsigned int power_state) 1150 { 1151 unsigned long end_time = jiffies + msecs_to_jiffies(500); 1152 unsigned int state, actual_state, count; 1153 1154 for (count = 0; count < 500; count++) { 1155 state = snd_hdac_codec_read(codec, nid, 0, 1156 AC_VERB_GET_POWER_STATE, 0); 1157 if (state & AC_PWRST_ERROR) { 1158 msleep(20); 1159 break; 1160 } 1161 actual_state = (state >> 4) & 0x0f; 1162 if (actual_state == power_state) 1163 break; 1164 if (time_after_eq(jiffies, end_time)) 1165 break; 1166 /* wait until the codec reachs to the target state */ 1167 msleep(1); 1168 } 1169 return state; 1170 } 1171 EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state); 1172