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 19static void setup_fg_nodes(struct hdac_device *codec); 20static int get_codec_vendor_name(struct hdac_device *codec); 21 22static 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 */ 41int 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} 122EXPORT_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 */ 128void 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} 137EXPORT_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 */ 143int 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} 160EXPORT_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 */ 166void 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} 176EXPORT_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 */ 185int 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} 198EXPORT_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 */ 208int 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} 213EXPORT_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 */ 225static 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 */ 257int 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 */ 276int 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} 283EXPORT_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 */ 294int _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} 302EXPORT_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 */ 313int 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} 323EXPORT_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 */ 332int 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} 346EXPORT_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 */ 357int 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} 370EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes); 371 372/* 373 * look for an AFG and MFG nodes 374 */ 375static 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 */ 405int 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; 430unlock: 431 mutex_unlock(&codec->widget_lock); 432 return err; 433} 434EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); 435 436/* return CONNLIST_LEN parameter of the given widget */ 437static 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 */ 465int 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} 555EXPORT_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 */ 568int snd_hdac_power_up(struct hdac_device *codec) 569{ 570 return pm_runtime_get_sync(&codec->dev); 571} 572EXPORT_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 */ 580int 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} 587EXPORT_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 */ 600int 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} 606EXPORT_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 */ 612int 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 */ 633int 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} 639EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); 640#endif 641 642/* codec vendor labels */ 643struct hda_vendor_id { 644 unsigned int id; 645 const char *name; 646}; 647 648static 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 { 0x434d, "C-Media" }, 669 { 0x8086, "Intel" }, 670 { 0x8384, "SigmaTel" }, 671 {} /* terminator */ 672}; 673 674/* store the codec vendor name */ 675static int get_codec_vendor_name(struct hdac_device *codec) 676{ 677 const struct hda_vendor_id *c; 678 u16 vendor_id = codec->vendor_id >> 16; 679 680 for (c = hda_vendor_ids; c->id; c++) { 681 if (c->id == vendor_id) { 682 codec->vendor_name = kstrdup(c->name, GFP_KERNEL); 683 return codec->vendor_name ? 0 : -ENOMEM; 684 } 685 } 686 687 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); 688 return codec->vendor_name ? 0 : -ENOMEM; 689} 690 691/* 692 * stream formats 693 */ 694struct hda_rate_tbl { 695 unsigned int hz; 696 unsigned int alsa_bits; 697 unsigned int hda_fmt; 698}; 699 700/* rate = base * mult / div */ 701#define HDA_RATE(base, mult, div) \ 702 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ 703 (((div) - 1) << AC_FMT_DIV_SHIFT)) 704 705static const struct hda_rate_tbl rate_bits[] = { 706 /* rate in Hz, ALSA rate bitmask, HDA format value */ 707 708 /* autodetected value used in snd_hda_query_supported_pcm */ 709 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, 710 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, 711 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, 712 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, 713 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, 714 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, 715 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, 716 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, 717 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, 718 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, 719 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, 720#define AC_PAR_PCM_RATE_BITS 11 721 /* up to bits 10, 384kHZ isn't supported properly */ 722 723 /* not autodetected value */ 724 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, 725 726 { 0 } /* terminator */ 727}; 728 729static snd_pcm_format_t snd_hdac_format_normalize(snd_pcm_format_t format) 730{ 731 switch (format) { 732 case SNDRV_PCM_FORMAT_S20_LE: 733 case SNDRV_PCM_FORMAT_S24_LE: 734 return SNDRV_PCM_FORMAT_S32_LE; 735 736 case SNDRV_PCM_FORMAT_U20_LE: 737 case SNDRV_PCM_FORMAT_U24_LE: 738 return SNDRV_PCM_FORMAT_U32_LE; 739 740 case SNDRV_PCM_FORMAT_S20_BE: 741 case SNDRV_PCM_FORMAT_S24_BE: 742 return SNDRV_PCM_FORMAT_S32_BE; 743 744 case SNDRV_PCM_FORMAT_U20_BE: 745 case SNDRV_PCM_FORMAT_U24_BE: 746 return SNDRV_PCM_FORMAT_U32_BE; 747 748 default: 749 return format; 750 } 751} 752 753/** 754 * snd_hdac_stream_format_bits - obtain bits per sample value. 755 * @format: the PCM format. 756 * @subformat: the PCM subformat. 757 * @maxbits: the maximum bits per sample. 758 * 759 * Return: The number of bits per sample. 760 */ 761unsigned int snd_hdac_stream_format_bits(snd_pcm_format_t format, snd_pcm_subformat_t subformat, 762 unsigned int maxbits) 763{ 764 struct snd_pcm_hw_params params; 765 unsigned int bits; 766 767 memset(¶ms, 0, sizeof(params)); 768 769 params_set_format(¶ms, snd_hdac_format_normalize(format)); 770 snd_mask_set(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_SUBFORMAT), 771 (__force unsigned int)subformat); 772 773 bits = snd_pcm_hw_params_bits(¶ms); 774 if (maxbits) 775 return min(bits, maxbits); 776 return bits; 777} 778EXPORT_SYMBOL_GPL(snd_hdac_stream_format_bits); 779 780/** 781 * snd_hdac_stream_format - convert format parameters to SDxFMT value. 782 * @channels: the number of channels. 783 * @bits: bits per sample. 784 * @rate: the sample rate. 785 * 786 * Return: The format bitset or zero if invalid. 787 */ 788unsigned int snd_hdac_stream_format(unsigned int channels, unsigned int bits, unsigned int rate) 789{ 790 unsigned int val = 0; 791 int i; 792 793 for (i = 0; rate_bits[i].hz; i++) { 794 if (rate_bits[i].hz == rate) { 795 val = rate_bits[i].hda_fmt; 796 break; 797 } 798 } 799 800 if (!rate_bits[i].hz) 801 return 0; 802 803 if (channels == 0 || channels > 8) 804 return 0; 805 val |= channels - 1; 806 807 switch (bits) { 808 case 8: 809 val |= AC_FMT_BITS_8; 810 break; 811 case 16: 812 val |= AC_FMT_BITS_16; 813 break; 814 case 20: 815 val |= AC_FMT_BITS_20; 816 break; 817 case 24: 818 val |= AC_FMT_BITS_24; 819 break; 820 case 32: 821 val |= AC_FMT_BITS_32; 822 break; 823 default: 824 return 0; 825 } 826 827 return val; 828} 829EXPORT_SYMBOL_GPL(snd_hdac_stream_format); 830 831/** 832 * snd_hdac_spdif_stream_format - convert format parameters to SDxFMT value. 833 * @channels: the number of channels. 834 * @bits: bits per sample. 835 * @rate: the sample rate. 836 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant). 837 * 838 * Return: The format bitset or zero if invalid. 839 */ 840unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bits, 841 unsigned int rate, unsigned short spdif_ctls) 842{ 843 unsigned int val = snd_hdac_stream_format(channels, bits, rate); 844 845 if (val && spdif_ctls & AC_DIG1_NONAUDIO) 846 val |= AC_FMT_TYPE_NON_PCM; 847 848 return val; 849} 850EXPORT_SYMBOL_GPL(snd_hdac_spdif_stream_format); 851 852static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) 853{ 854 unsigned int val = 0; 855 856 if (nid != codec->afg && 857 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) 858 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); 859 if (!val || val == -1) 860 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); 861 if (!val || val == -1) 862 return 0; 863 return val; 864} 865 866static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) 867{ 868 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); 869 870 if (!streams || streams == -1) 871 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); 872 if (!streams || streams == -1) 873 return 0; 874 return streams; 875} 876 877/** 878 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats 879 * @codec: the codec object 880 * @nid: NID to query 881 * @ratesp: the pointer to store the detected rate bitflags 882 * @formatsp: the pointer to store the detected formats 883 * @subformatsp: the pointer to store the detected subformats for S32_LE format 884 * @bpsp: the pointer to store the detected format widths 885 * 886 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp, 887 * @subformatsp or @bpsp argument is ignored. 888 * 889 * Returns 0 if successful, otherwise a negative error code. 890 */ 891int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, 892 u32 *ratesp, u64 *formatsp, u32 *subformatsp, 893 unsigned int *bpsp) 894{ 895 unsigned int i, val, wcaps; 896 897 wcaps = get_wcaps(codec, nid); 898 val = query_pcm_param(codec, nid); 899 900 if (ratesp) { 901 u32 rates = 0; 902 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { 903 if (val & (1 << i)) 904 rates |= rate_bits[i].alsa_bits; 905 } 906 if (rates == 0) { 907 dev_err(&codec->dev, 908 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", 909 nid, val, 910 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); 911 return -EIO; 912 } 913 *ratesp = rates; 914 } 915 916 if (formatsp || subformatsp || bpsp) { 917 unsigned int streams, bps; 918 u32 subformats = 0; 919 u64 formats = 0; 920 921 streams = query_stream_param(codec, nid); 922 if (!streams) 923 return -EIO; 924 925 bps = 0; 926 if (streams & AC_SUPFMT_PCM) { 927 if (val & AC_SUPPCM_BITS_8) { 928 formats |= SNDRV_PCM_FMTBIT_U8; 929 bps = 8; 930 } 931 if (val & AC_SUPPCM_BITS_16) { 932 formats |= SNDRV_PCM_FMTBIT_S16_LE; 933 bps = 16; 934 } 935 if (val & AC_SUPPCM_BITS_20) { 936 formats |= SNDRV_PCM_FMTBIT_S32_LE; 937 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_20; 938 bps = 20; 939 } 940 if (val & AC_SUPPCM_BITS_24) { 941 formats |= SNDRV_PCM_FMTBIT_S32_LE; 942 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_24; 943 bps = 24; 944 } 945 if (val & AC_SUPPCM_BITS_32) { 946 if (wcaps & AC_WCAP_DIGITAL) { 947 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; 948 } else { 949 formats |= SNDRV_PCM_FMTBIT_S32_LE; 950 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_MAX; 951 bps = 32; 952 } 953 } 954 } 955#if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ 956 if (streams & AC_SUPFMT_FLOAT32) { 957 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; 958 if (!bps) 959 bps = 32; 960 } 961#endif 962 if (streams == AC_SUPFMT_AC3) { 963 /* should be exclusive */ 964 /* temporary hack: we have still no proper support 965 * for the direct AC3 stream... 966 */ 967 formats |= SNDRV_PCM_FMTBIT_U8; 968 bps = 8; 969 } 970 if (formats == 0) { 971 dev_err(&codec->dev, 972 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", 973 nid, val, 974 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, 975 streams); 976 return -EIO; 977 } 978 if (formatsp) 979 *formatsp = formats; 980 if (subformatsp) 981 *subformatsp = subformats; 982 if (bpsp) 983 *bpsp = bps; 984 } 985 986 return 0; 987} 988EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); 989 990/** 991 * snd_hdac_is_supported_format - Check the validity of the format 992 * @codec: the codec object 993 * @nid: NID to check 994 * @format: the HD-audio format value to check 995 * 996 * Check whether the given node supports the format value. 997 * 998 * Returns true if supported, false if not. 999 */ 1000bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, 1001 unsigned int format) 1002{ 1003 int i; 1004 unsigned int val = 0, rate, stream; 1005 1006 val = query_pcm_param(codec, nid); 1007 if (!val) 1008 return false; 1009 1010 rate = format & 0xff00; 1011 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) 1012 if (rate_bits[i].hda_fmt == rate) { 1013 if (val & (1 << i)) 1014 break; 1015 return false; 1016 } 1017 if (i >= AC_PAR_PCM_RATE_BITS) 1018 return false; 1019 1020 stream = query_stream_param(codec, nid); 1021 if (!stream) 1022 return false; 1023 1024 if (stream & AC_SUPFMT_PCM) { 1025 switch (format & 0xf0) { 1026 case 0x00: 1027 if (!(val & AC_SUPPCM_BITS_8)) 1028 return false; 1029 break; 1030 case 0x10: 1031 if (!(val & AC_SUPPCM_BITS_16)) 1032 return false; 1033 break; 1034 case 0x20: 1035 if (!(val & AC_SUPPCM_BITS_20)) 1036 return false; 1037 break; 1038 case 0x30: 1039 if (!(val & AC_SUPPCM_BITS_24)) 1040 return false; 1041 break; 1042 case 0x40: 1043 if (!(val & AC_SUPPCM_BITS_32)) 1044 return false; 1045 break; 1046 default: 1047 return false; 1048 } 1049 } else { 1050 /* FIXME: check for float32 and AC3? */ 1051 } 1052 1053 return true; 1054} 1055EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); 1056 1057static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid, 1058 int flags, unsigned int verb, unsigned int parm) 1059{ 1060 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 1061 unsigned int res; 1062 1063 if (snd_hdac_exec_verb(hdac, cmd, flags, &res)) 1064 return -1; 1065 1066 return res; 1067} 1068 1069static int codec_write(struct hdac_device *hdac, hda_nid_t nid, 1070 int flags, unsigned int verb, unsigned int parm) 1071{ 1072 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 1073 1074 return snd_hdac_exec_verb(hdac, cmd, flags, NULL); 1075} 1076 1077/** 1078 * snd_hdac_codec_read - send a command and get the response 1079 * @hdac: the HDAC device 1080 * @nid: NID to send the command 1081 * @flags: optional bit flags 1082 * @verb: the verb to send 1083 * @parm: the parameter for the verb 1084 * 1085 * Send a single command and read the corresponding response. 1086 * 1087 * Returns the obtained response value, or -1 for an error. 1088 */ 1089int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, 1090 int flags, unsigned int verb, unsigned int parm) 1091{ 1092 return codec_read(hdac, nid, flags, verb, parm); 1093} 1094EXPORT_SYMBOL_GPL(snd_hdac_codec_read); 1095 1096/** 1097 * snd_hdac_codec_write - send a single command without waiting for response 1098 * @hdac: the HDAC device 1099 * @nid: NID to send the command 1100 * @flags: optional bit flags 1101 * @verb: the verb to send 1102 * @parm: the parameter for the verb 1103 * 1104 * Send a single command without waiting for response. 1105 * 1106 * Returns 0 if successful, or a negative error code. 1107 */ 1108int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, 1109 int flags, unsigned int verb, unsigned int parm) 1110{ 1111 return codec_write(hdac, nid, flags, verb, parm); 1112} 1113EXPORT_SYMBOL_GPL(snd_hdac_codec_write); 1114 1115/** 1116 * snd_hdac_check_power_state - check whether the actual power state matches 1117 * with the target state 1118 * 1119 * @hdac: the HDAC device 1120 * @nid: NID to send the command 1121 * @target_state: target state to check for 1122 * 1123 * Return true if state matches, false if not 1124 */ 1125bool snd_hdac_check_power_state(struct hdac_device *hdac, 1126 hda_nid_t nid, unsigned int target_state) 1127{ 1128 unsigned int state = codec_read(hdac, nid, 0, 1129 AC_VERB_GET_POWER_STATE, 0); 1130 1131 if (state & AC_PWRST_ERROR) 1132 return true; 1133 state = (state >> 4) & 0x0f; 1134 return (state == target_state); 1135} 1136EXPORT_SYMBOL_GPL(snd_hdac_check_power_state); 1137/** 1138 * snd_hdac_sync_power_state - wait until actual power state matches 1139 * with the target state 1140 * 1141 * @codec: the HDAC device 1142 * @nid: NID to send the command 1143 * @power_state: target power state to wait for 1144 * 1145 * Return power state or PS_ERROR if codec rejects GET verb. 1146 */ 1147unsigned int snd_hdac_sync_power_state(struct hdac_device *codec, 1148 hda_nid_t nid, unsigned int power_state) 1149{ 1150 unsigned long end_time = jiffies + msecs_to_jiffies(500); 1151 unsigned int state, actual_state, count; 1152 1153 for (count = 0; count < 500; count++) { 1154 state = snd_hdac_codec_read(codec, nid, 0, 1155 AC_VERB_GET_POWER_STATE, 0); 1156 if (state & AC_PWRST_ERROR) { 1157 msleep(20); 1158 break; 1159 } 1160 actual_state = (state >> 4) & 0x0f; 1161 if (actual_state == power_state) 1162 break; 1163 if (time_after_eq(jiffies, end_time)) 1164 break; 1165 /* wait until the codec reachs to the target state */ 1166 msleep(1); 1167 } 1168 return state; 1169} 1170EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state); 1171