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 int val; 303 304 if (codec->regmap) 305 regcache_cache_bypass(codec->regmap, true); 306 val = snd_hdac_read_parm(codec, nid, parm); 307 if (codec->regmap) 308 regcache_cache_bypass(codec->regmap, false); 309 return val; 310 } 311 EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached); 312 313 /** 314 * snd_hdac_override_parm - override read-only parameters 315 * @codec: the codec object 316 * @nid: NID for the parameter 317 * @parm: the parameter to change 318 * @val: the parameter value to overwrite 319 */ 320 int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, 321 unsigned int parm, unsigned int val) 322 { 323 unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm; 324 int err; 325 326 if (!codec->regmap) 327 return -EINVAL; 328 329 codec->caps_overwriting = true; 330 err = snd_hdac_regmap_write_raw(codec, verb, val); 331 codec->caps_overwriting = false; 332 return err; 333 } 334 EXPORT_SYMBOL_GPL(snd_hdac_override_parm); 335 336 /** 337 * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes 338 * @codec: the codec object 339 * @nid: NID to inspect 340 * @start_id: the pointer to store the starting NID 341 * 342 * Returns the number of subtree nodes or zero if not found. 343 * This function reads parameters always without caching. 344 */ 345 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, 346 hda_nid_t *start_id) 347 { 348 unsigned int parm; 349 350 parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT); 351 if (parm == -1) { 352 *start_id = 0; 353 return 0; 354 } 355 *start_id = (parm >> 16) & 0x7fff; 356 return (int)(parm & 0x7fff); 357 } 358 EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes); 359 360 /* 361 * look for an AFG and MFG nodes 362 */ 363 static void setup_fg_nodes(struct hdac_device *codec) 364 { 365 int i, total_nodes, function_id; 366 hda_nid_t nid; 367 368 total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid); 369 for (i = 0; i < total_nodes; i++, nid++) { 370 function_id = snd_hdac_read_parm(codec, nid, 371 AC_PAR_FUNCTION_TYPE); 372 switch (function_id & 0xff) { 373 case AC_GRP_AUDIO_FUNCTION: 374 codec->afg = nid; 375 codec->afg_function_id = function_id & 0xff; 376 codec->afg_unsol = (function_id >> 8) & 1; 377 break; 378 case AC_GRP_MODEM_FUNCTION: 379 codec->mfg = nid; 380 codec->mfg_function_id = function_id & 0xff; 381 codec->mfg_unsol = (function_id >> 8) & 1; 382 break; 383 default: 384 break; 385 } 386 } 387 } 388 389 /** 390 * snd_hdac_refresh_widgets - Reset the widget start/end nodes 391 * @codec: the codec object 392 */ 393 int snd_hdac_refresh_widgets(struct hdac_device *codec) 394 { 395 hda_nid_t start_nid; 396 int nums; 397 398 nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid); 399 if (!start_nid || nums <= 0 || nums >= 0xff) { 400 dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n", 401 codec->afg); 402 return -EINVAL; 403 } 404 405 codec->num_nodes = nums; 406 codec->start_nid = start_nid; 407 codec->end_nid = start_nid + nums; 408 return 0; 409 } 410 EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); 411 412 /** 413 * snd_hdac_refresh_widget_sysfs - Reset the codec widgets and reinit the 414 * codec sysfs 415 * @codec: the codec object 416 * 417 * first we need to remove sysfs, then refresh widgets and lastly 418 * recreate it 419 */ 420 int snd_hdac_refresh_widget_sysfs(struct hdac_device *codec) 421 { 422 int ret; 423 424 if (device_is_registered(&codec->dev)) 425 hda_widget_sysfs_exit(codec); 426 ret = snd_hdac_refresh_widgets(codec); 427 if (ret) { 428 dev_err(&codec->dev, "failed to refresh widget: %d\n", ret); 429 return ret; 430 } 431 if (device_is_registered(&codec->dev)) { 432 ret = hda_widget_sysfs_init(codec); 433 if (ret) { 434 dev_err(&codec->dev, "failed to init sysfs: %d\n", ret); 435 return ret; 436 } 437 } 438 return ret; 439 } 440 EXPORT_SYMBOL_GPL(snd_hdac_refresh_widget_sysfs); 441 442 /* return CONNLIST_LEN parameter of the given widget */ 443 static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) 444 { 445 unsigned int wcaps = get_wcaps(codec, nid); 446 unsigned int parm; 447 448 if (!(wcaps & AC_WCAP_CONN_LIST) && 449 get_wcaps_type(wcaps) != AC_WID_VOL_KNB) 450 return 0; 451 452 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); 453 if (parm == -1) 454 parm = 0; 455 return parm; 456 } 457 458 /** 459 * snd_hdac_get_connections - get a widget connection list 460 * @codec: the codec object 461 * @nid: NID 462 * @conn_list: the array to store the results, can be NULL 463 * @max_conns: the max size of the given array 464 * 465 * Returns the number of connected widgets, zero for no connection, or a 466 * negative error code. When the number of elements don't fit with the 467 * given array size, it returns -ENOSPC. 468 * 469 * When @conn_list is NULL, it just checks the number of connections. 470 */ 471 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, 472 hda_nid_t *conn_list, int max_conns) 473 { 474 unsigned int parm; 475 int i, conn_len, conns, err; 476 unsigned int shift, num_elems, mask; 477 hda_nid_t prev_nid; 478 int null_count = 0; 479 480 parm = get_num_conns(codec, nid); 481 if (!parm) 482 return 0; 483 484 if (parm & AC_CLIST_LONG) { 485 /* long form */ 486 shift = 16; 487 num_elems = 2; 488 } else { 489 /* short form */ 490 shift = 8; 491 num_elems = 4; 492 } 493 conn_len = parm & AC_CLIST_LENGTH; 494 mask = (1 << (shift-1)) - 1; 495 496 if (!conn_len) 497 return 0; /* no connection */ 498 499 if (conn_len == 1) { 500 /* single connection */ 501 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, 502 &parm); 503 if (err < 0) 504 return err; 505 if (conn_list) 506 conn_list[0] = parm & mask; 507 return 1; 508 } 509 510 /* multi connection */ 511 conns = 0; 512 prev_nid = 0; 513 for (i = 0; i < conn_len; i++) { 514 int range_val; 515 hda_nid_t val, n; 516 517 if (i % num_elems == 0) { 518 err = snd_hdac_read(codec, nid, 519 AC_VERB_GET_CONNECT_LIST, i, 520 &parm); 521 if (err < 0) 522 return -EIO; 523 } 524 range_val = !!(parm & (1 << (shift-1))); /* ranges */ 525 val = parm & mask; 526 if (val == 0 && null_count++) { /* no second chance */ 527 dev_dbg(&codec->dev, 528 "invalid CONNECT_LIST verb %x[%i]:%x\n", 529 nid, i, parm); 530 return 0; 531 } 532 parm >>= shift; 533 if (range_val) { 534 /* ranges between the previous and this one */ 535 if (!prev_nid || prev_nid >= val) { 536 dev_warn(&codec->dev, 537 "invalid dep_range_val %x:%x\n", 538 prev_nid, val); 539 continue; 540 } 541 for (n = prev_nid + 1; n <= val; n++) { 542 if (conn_list) { 543 if (conns >= max_conns) 544 return -ENOSPC; 545 conn_list[conns] = n; 546 } 547 conns++; 548 } 549 } else { 550 if (conn_list) { 551 if (conns >= max_conns) 552 return -ENOSPC; 553 conn_list[conns] = val; 554 } 555 conns++; 556 } 557 prev_nid = val; 558 } 559 return conns; 560 } 561 EXPORT_SYMBOL_GPL(snd_hdac_get_connections); 562 563 #ifdef CONFIG_PM 564 /** 565 * snd_hdac_power_up - power up the codec 566 * @codec: the codec object 567 * 568 * This function calls the runtime PM helper to power up the given codec. 569 * Unlike snd_hdac_power_up_pm(), you should call this only for the code 570 * path that isn't included in PM path. Otherwise it gets stuck. 571 * 572 * Returns zero if successful, or a negative error code. 573 */ 574 int snd_hdac_power_up(struct hdac_device *codec) 575 { 576 return pm_runtime_get_sync(&codec->dev); 577 } 578 EXPORT_SYMBOL_GPL(snd_hdac_power_up); 579 580 /** 581 * snd_hdac_power_down - power down the codec 582 * @codec: the codec object 583 * 584 * Returns zero if successful, or a negative error code. 585 */ 586 int snd_hdac_power_down(struct hdac_device *codec) 587 { 588 struct device *dev = &codec->dev; 589 590 pm_runtime_mark_last_busy(dev); 591 return pm_runtime_put_autosuspend(dev); 592 } 593 EXPORT_SYMBOL_GPL(snd_hdac_power_down); 594 595 /** 596 * snd_hdac_power_up_pm - power up the codec 597 * @codec: the codec object 598 * 599 * This function can be called in a recursive code path like init code 600 * which may be called by PM suspend/resume again. OTOH, if a power-up 601 * call must wake up the sleeper (e.g. in a kctl callback), use 602 * snd_hdac_power_up() instead. 603 * 604 * Returns zero if successful, or a negative error code. 605 */ 606 int snd_hdac_power_up_pm(struct hdac_device *codec) 607 { 608 if (!atomic_inc_not_zero(&codec->in_pm)) 609 return snd_hdac_power_up(codec); 610 return 0; 611 } 612 EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); 613 614 /** 615 * snd_hdac_power_down_pm - power down the codec 616 * @codec: the codec object 617 * 618 * Like snd_hdac_power_up_pm(), this function is used in a recursive 619 * code path like init code which may be called by PM suspend/resume again. 620 * 621 * Returns zero if successful, or a negative error code. 622 */ 623 int snd_hdac_power_down_pm(struct hdac_device *codec) 624 { 625 if (atomic_dec_if_positive(&codec->in_pm) < 0) 626 return snd_hdac_power_down(codec); 627 return 0; 628 } 629 EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); 630 #endif 631 632 /** 633 * snd_hdac_link_power - Enable/disable the link power for a codec 634 * @codec: the codec object 635 * @bool: enable or disable the link power 636 */ 637 int snd_hdac_link_power(struct hdac_device *codec, bool enable) 638 { 639 if (!codec->link_power_control) 640 return 0; 641 642 if (codec->bus->ops->link_power) 643 return codec->bus->ops->link_power(codec->bus, enable); 644 else 645 return -EINVAL; 646 } 647 EXPORT_SYMBOL_GPL(snd_hdac_link_power); 648 649 /* codec vendor labels */ 650 struct hda_vendor_id { 651 unsigned int id; 652 const char *name; 653 }; 654 655 static struct hda_vendor_id hda_vendor_ids[] = { 656 { 0x1002, "ATI" }, 657 { 0x1013, "Cirrus Logic" }, 658 { 0x1057, "Motorola" }, 659 { 0x1095, "Silicon Image" }, 660 { 0x10de, "Nvidia" }, 661 { 0x10ec, "Realtek" }, 662 { 0x1102, "Creative" }, 663 { 0x1106, "VIA" }, 664 { 0x111d, "IDT" }, 665 { 0x11c1, "LSI" }, 666 { 0x11d4, "Analog Devices" }, 667 { 0x13f6, "C-Media" }, 668 { 0x14f1, "Conexant" }, 669 { 0x17e8, "Chrontel" }, 670 { 0x1854, "LG" }, 671 { 0x1aec, "Wolfson Microelectronics" }, 672 { 0x1af4, "QEMU" }, 673 { 0x434d, "C-Media" }, 674 { 0x8086, "Intel" }, 675 { 0x8384, "SigmaTel" }, 676 {} /* terminator */ 677 }; 678 679 /* store the codec vendor name */ 680 static int get_codec_vendor_name(struct hdac_device *codec) 681 { 682 const struct hda_vendor_id *c; 683 u16 vendor_id = codec->vendor_id >> 16; 684 685 for (c = hda_vendor_ids; c->id; c++) { 686 if (c->id == vendor_id) { 687 codec->vendor_name = kstrdup(c->name, GFP_KERNEL); 688 return codec->vendor_name ? 0 : -ENOMEM; 689 } 690 } 691 692 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); 693 return codec->vendor_name ? 0 : -ENOMEM; 694 } 695 696 /* 697 * stream formats 698 */ 699 struct hda_rate_tbl { 700 unsigned int hz; 701 unsigned int alsa_bits; 702 unsigned int hda_fmt; 703 }; 704 705 /* rate = base * mult / div */ 706 #define HDA_RATE(base, mult, div) \ 707 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ 708 (((div) - 1) << AC_FMT_DIV_SHIFT)) 709 710 static struct hda_rate_tbl rate_bits[] = { 711 /* rate in Hz, ALSA rate bitmask, HDA format value */ 712 713 /* autodetected value used in snd_hda_query_supported_pcm */ 714 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, 715 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, 716 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, 717 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, 718 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, 719 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, 720 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, 721 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, 722 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, 723 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, 724 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, 725 #define AC_PAR_PCM_RATE_BITS 11 726 /* up to bits 10, 384kHZ isn't supported properly */ 727 728 /* not autodetected value */ 729 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, 730 731 { 0 } /* terminator */ 732 }; 733 734 /** 735 * snd_hdac_calc_stream_format - calculate the format bitset 736 * @rate: the sample rate 737 * @channels: the number of channels 738 * @format: the PCM format (SNDRV_PCM_FORMAT_XXX) 739 * @maxbps: the max. bps 740 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant) 741 * 742 * Calculate the format bitset from the given rate, channels and th PCM format. 743 * 744 * Return zero if invalid. 745 */ 746 unsigned int snd_hdac_calc_stream_format(unsigned int rate, 747 unsigned int channels, 748 unsigned int format, 749 unsigned int maxbps, 750 unsigned short spdif_ctls) 751 { 752 int i; 753 unsigned int val = 0; 754 755 for (i = 0; rate_bits[i].hz; i++) 756 if (rate_bits[i].hz == rate) { 757 val = rate_bits[i].hda_fmt; 758 break; 759 } 760 if (!rate_bits[i].hz) 761 return 0; 762 763 if (channels == 0 || channels > 8) 764 return 0; 765 val |= channels - 1; 766 767 switch (snd_pcm_format_width(format)) { 768 case 8: 769 val |= AC_FMT_BITS_8; 770 break; 771 case 16: 772 val |= AC_FMT_BITS_16; 773 break; 774 case 20: 775 case 24: 776 case 32: 777 if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE) 778 val |= AC_FMT_BITS_32; 779 else if (maxbps >= 24) 780 val |= AC_FMT_BITS_24; 781 else 782 val |= AC_FMT_BITS_20; 783 break; 784 default: 785 return 0; 786 } 787 788 if (spdif_ctls & AC_DIG1_NONAUDIO) 789 val |= AC_FMT_TYPE_NON_PCM; 790 791 return val; 792 } 793 EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format); 794 795 static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) 796 { 797 unsigned int val = 0; 798 799 if (nid != codec->afg && 800 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) 801 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); 802 if (!val || val == -1) 803 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); 804 if (!val || val == -1) 805 return 0; 806 return val; 807 } 808 809 static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) 810 { 811 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); 812 813 if (!streams || streams == -1) 814 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); 815 if (!streams || streams == -1) 816 return 0; 817 return streams; 818 } 819 820 /** 821 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats 822 * @codec: the codec object 823 * @nid: NID to query 824 * @ratesp: the pointer to store the detected rate bitflags 825 * @formatsp: the pointer to store the detected formats 826 * @bpsp: the pointer to store the detected format widths 827 * 828 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp 829 * or @bsps argument is ignored. 830 * 831 * Returns 0 if successful, otherwise a negative error code. 832 */ 833 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, 834 u32 *ratesp, u64 *formatsp, unsigned int *bpsp) 835 { 836 unsigned int i, val, wcaps; 837 838 wcaps = get_wcaps(codec, nid); 839 val = query_pcm_param(codec, nid); 840 841 if (ratesp) { 842 u32 rates = 0; 843 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { 844 if (val & (1 << i)) 845 rates |= rate_bits[i].alsa_bits; 846 } 847 if (rates == 0) { 848 dev_err(&codec->dev, 849 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", 850 nid, val, 851 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); 852 return -EIO; 853 } 854 *ratesp = rates; 855 } 856 857 if (formatsp || bpsp) { 858 u64 formats = 0; 859 unsigned int streams, bps; 860 861 streams = query_stream_param(codec, nid); 862 if (!streams) 863 return -EIO; 864 865 bps = 0; 866 if (streams & AC_SUPFMT_PCM) { 867 if (val & AC_SUPPCM_BITS_8) { 868 formats |= SNDRV_PCM_FMTBIT_U8; 869 bps = 8; 870 } 871 if (val & AC_SUPPCM_BITS_16) { 872 formats |= SNDRV_PCM_FMTBIT_S16_LE; 873 bps = 16; 874 } 875 if (wcaps & AC_WCAP_DIGITAL) { 876 if (val & AC_SUPPCM_BITS_32) 877 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; 878 if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24)) 879 formats |= SNDRV_PCM_FMTBIT_S32_LE; 880 if (val & AC_SUPPCM_BITS_24) 881 bps = 24; 882 else if (val & AC_SUPPCM_BITS_20) 883 bps = 20; 884 } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24| 885 AC_SUPPCM_BITS_32)) { 886 formats |= SNDRV_PCM_FMTBIT_S32_LE; 887 if (val & AC_SUPPCM_BITS_32) 888 bps = 32; 889 else if (val & AC_SUPPCM_BITS_24) 890 bps = 24; 891 else if (val & AC_SUPPCM_BITS_20) 892 bps = 20; 893 } 894 } 895 #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ 896 if (streams & AC_SUPFMT_FLOAT32) { 897 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; 898 if (!bps) 899 bps = 32; 900 } 901 #endif 902 if (streams == AC_SUPFMT_AC3) { 903 /* should be exclusive */ 904 /* temporary hack: we have still no proper support 905 * for the direct AC3 stream... 906 */ 907 formats |= SNDRV_PCM_FMTBIT_U8; 908 bps = 8; 909 } 910 if (formats == 0) { 911 dev_err(&codec->dev, 912 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", 913 nid, val, 914 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, 915 streams); 916 return -EIO; 917 } 918 if (formatsp) 919 *formatsp = formats; 920 if (bpsp) 921 *bpsp = bps; 922 } 923 924 return 0; 925 } 926 EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); 927 928 /** 929 * snd_hdac_is_supported_format - Check the validity of the format 930 * @codec: the codec object 931 * @nid: NID to check 932 * @format: the HD-audio format value to check 933 * 934 * Check whether the given node supports the format value. 935 * 936 * Returns true if supported, false if not. 937 */ 938 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, 939 unsigned int format) 940 { 941 int i; 942 unsigned int val = 0, rate, stream; 943 944 val = query_pcm_param(codec, nid); 945 if (!val) 946 return false; 947 948 rate = format & 0xff00; 949 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) 950 if (rate_bits[i].hda_fmt == rate) { 951 if (val & (1 << i)) 952 break; 953 return false; 954 } 955 if (i >= AC_PAR_PCM_RATE_BITS) 956 return false; 957 958 stream = query_stream_param(codec, nid); 959 if (!stream) 960 return false; 961 962 if (stream & AC_SUPFMT_PCM) { 963 switch (format & 0xf0) { 964 case 0x00: 965 if (!(val & AC_SUPPCM_BITS_8)) 966 return false; 967 break; 968 case 0x10: 969 if (!(val & AC_SUPPCM_BITS_16)) 970 return false; 971 break; 972 case 0x20: 973 if (!(val & AC_SUPPCM_BITS_20)) 974 return false; 975 break; 976 case 0x30: 977 if (!(val & AC_SUPPCM_BITS_24)) 978 return false; 979 break; 980 case 0x40: 981 if (!(val & AC_SUPPCM_BITS_32)) 982 return false; 983 break; 984 default: 985 return false; 986 } 987 } else { 988 /* FIXME: check for float32 and AC3? */ 989 } 990 991 return true; 992 } 993 EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); 994 995 static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid, 996 int flags, unsigned int verb, unsigned int parm) 997 { 998 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 999 unsigned int res; 1000 1001 if (snd_hdac_exec_verb(hdac, cmd, flags, &res)) 1002 return -1; 1003 1004 return res; 1005 } 1006 1007 static int codec_write(struct hdac_device *hdac, hda_nid_t nid, 1008 int flags, unsigned int verb, unsigned int parm) 1009 { 1010 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); 1011 1012 return snd_hdac_exec_verb(hdac, cmd, flags, NULL); 1013 } 1014 1015 /** 1016 * snd_hdac_codec_read - send a command and get the response 1017 * @hdac: the HDAC device 1018 * @nid: NID to send the command 1019 * @flags: optional bit flags 1020 * @verb: the verb to send 1021 * @parm: the parameter for the verb 1022 * 1023 * Send a single command and read the corresponding response. 1024 * 1025 * Returns the obtained response value, or -1 for an error. 1026 */ 1027 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, 1028 int flags, unsigned int verb, unsigned int parm) 1029 { 1030 return codec_read(hdac, nid, flags, verb, parm); 1031 } 1032 EXPORT_SYMBOL_GPL(snd_hdac_codec_read); 1033 1034 /** 1035 * snd_hdac_codec_write - send a single command without waiting for response 1036 * @hdac: the HDAC device 1037 * @nid: NID to send the command 1038 * @flags: optional bit flags 1039 * @verb: the verb to send 1040 * @parm: the parameter for the verb 1041 * 1042 * Send a single command without waiting for response. 1043 * 1044 * Returns 0 if successful, or a negative error code. 1045 */ 1046 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, 1047 int flags, unsigned int verb, unsigned int parm) 1048 { 1049 return codec_write(hdac, nid, flags, verb, parm); 1050 } 1051 EXPORT_SYMBOL_GPL(snd_hdac_codec_write); 1052 1053 /** 1054 * snd_hdac_check_power_state - check whether the actual power state matches 1055 * with the target state 1056 * 1057 * @hdac: the HDAC device 1058 * @nid: NID to send the command 1059 * @target_state: target state to check for 1060 * 1061 * Return true if state matches, false if not 1062 */ 1063 bool snd_hdac_check_power_state(struct hdac_device *hdac, 1064 hda_nid_t nid, unsigned int target_state) 1065 { 1066 unsigned int state = codec_read(hdac, nid, 0, 1067 AC_VERB_GET_POWER_STATE, 0); 1068 1069 if (state & AC_PWRST_ERROR) 1070 return true; 1071 state = (state >> 4) & 0x0f; 1072 return (state == target_state); 1073 } 1074 EXPORT_SYMBOL_GPL(snd_hdac_check_power_state); 1075