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