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