1 /* 2 * Universal Interface for Intel High Definition Audio Codec 3 * 4 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de> 5 * 6 * 7 * This driver is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This driver is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 22 #include <linux/mm.h> 23 #include <linux/init.h> 24 #include <linux/delay.h> 25 #include <linux/slab.h> 26 #include <linux/pci.h> 27 #include <linux/mutex.h> 28 #include <linux/module.h> 29 #include <sound/core.h> 30 #include "hda_codec.h" 31 #include <sound/asoundef.h> 32 #include <sound/tlv.h> 33 #include <sound/initval.h> 34 #include <sound/jack.h> 35 #include "hda_local.h" 36 #include "hda_beep.h" 37 #include "hda_jack.h" 38 #include <sound/hda_hwdep.h> 39 40 #define CREATE_TRACE_POINTS 41 #include "hda_trace.h" 42 43 /* 44 * vendor / preset table 45 */ 46 47 struct hda_vendor_id { 48 unsigned int id; 49 const char *name; 50 }; 51 52 /* codec vendor labels */ 53 static struct hda_vendor_id hda_vendor_ids[] = { 54 { 0x1002, "ATI" }, 55 { 0x1013, "Cirrus Logic" }, 56 { 0x1057, "Motorola" }, 57 { 0x1095, "Silicon Image" }, 58 { 0x10de, "Nvidia" }, 59 { 0x10ec, "Realtek" }, 60 { 0x1102, "Creative" }, 61 { 0x1106, "VIA" }, 62 { 0x111d, "IDT" }, 63 { 0x11c1, "LSI" }, 64 { 0x11d4, "Analog Devices" }, 65 { 0x13f6, "C-Media" }, 66 { 0x14f1, "Conexant" }, 67 { 0x17e8, "Chrontel" }, 68 { 0x1854, "LG" }, 69 { 0x1aec, "Wolfson Microelectronics" }, 70 { 0x434d, "C-Media" }, 71 { 0x8086, "Intel" }, 72 { 0x8384, "SigmaTel" }, 73 {} /* terminator */ 74 }; 75 76 static DEFINE_MUTEX(preset_mutex); 77 static LIST_HEAD(hda_preset_tables); 78 79 int snd_hda_add_codec_preset(struct hda_codec_preset_list *preset) 80 { 81 mutex_lock(&preset_mutex); 82 list_add_tail(&preset->list, &hda_preset_tables); 83 mutex_unlock(&preset_mutex); 84 return 0; 85 } 86 EXPORT_SYMBOL_HDA(snd_hda_add_codec_preset); 87 88 int snd_hda_delete_codec_preset(struct hda_codec_preset_list *preset) 89 { 90 mutex_lock(&preset_mutex); 91 list_del(&preset->list); 92 mutex_unlock(&preset_mutex); 93 return 0; 94 } 95 EXPORT_SYMBOL_HDA(snd_hda_delete_codec_preset); 96 97 #ifdef CONFIG_PM 98 #define codec_in_pm(codec) ((codec)->in_pm) 99 static void hda_power_work(struct work_struct *work); 100 static void hda_keep_power_on(struct hda_codec *codec); 101 #define hda_codec_is_power_on(codec) ((codec)->power_on) 102 static inline void hda_call_pm_notify(struct hda_bus *bus, bool power_up) 103 { 104 if (bus->ops.pm_notify) 105 bus->ops.pm_notify(bus, power_up); 106 } 107 #else 108 #define codec_in_pm(codec) 0 109 static inline void hda_keep_power_on(struct hda_codec *codec) {} 110 #define hda_codec_is_power_on(codec) 1 111 #define hda_call_pm_notify(bus, state) {} 112 #endif 113 114 /** 115 * snd_hda_get_jack_location - Give a location string of the jack 116 * @cfg: pin default config value 117 * 118 * Parse the pin default config value and returns the string of the 119 * jack location, e.g. "Rear", "Front", etc. 120 */ 121 const char *snd_hda_get_jack_location(u32 cfg) 122 { 123 static char *bases[7] = { 124 "N/A", "Rear", "Front", "Left", "Right", "Top", "Bottom", 125 }; 126 static unsigned char specials_idx[] = { 127 0x07, 0x08, 128 0x17, 0x18, 0x19, 129 0x37, 0x38 130 }; 131 static char *specials[] = { 132 "Rear Panel", "Drive Bar", 133 "Riser", "HDMI", "ATAPI", 134 "Mobile-In", "Mobile-Out" 135 }; 136 int i; 137 cfg = (cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT; 138 if ((cfg & 0x0f) < 7) 139 return bases[cfg & 0x0f]; 140 for (i = 0; i < ARRAY_SIZE(specials_idx); i++) { 141 if (cfg == specials_idx[i]) 142 return specials[i]; 143 } 144 return "UNKNOWN"; 145 } 146 EXPORT_SYMBOL_HDA(snd_hda_get_jack_location); 147 148 /** 149 * snd_hda_get_jack_connectivity - Give a connectivity string of the jack 150 * @cfg: pin default config value 151 * 152 * Parse the pin default config value and returns the string of the 153 * jack connectivity, i.e. external or internal connection. 154 */ 155 const char *snd_hda_get_jack_connectivity(u32 cfg) 156 { 157 static char *jack_locations[4] = { "Ext", "Int", "Sep", "Oth" }; 158 159 return jack_locations[(cfg >> (AC_DEFCFG_LOCATION_SHIFT + 4)) & 3]; 160 } 161 EXPORT_SYMBOL_HDA(snd_hda_get_jack_connectivity); 162 163 /** 164 * snd_hda_get_jack_type - Give a type string of the jack 165 * @cfg: pin default config value 166 * 167 * Parse the pin default config value and returns the string of the 168 * jack type, i.e. the purpose of the jack, such as Line-Out or CD. 169 */ 170 const char *snd_hda_get_jack_type(u32 cfg) 171 { 172 static char *jack_types[16] = { 173 "Line Out", "Speaker", "HP Out", "CD", 174 "SPDIF Out", "Digital Out", "Modem Line", "Modem Hand", 175 "Line In", "Aux", "Mic", "Telephony", 176 "SPDIF In", "Digital In", "Reserved", "Other" 177 }; 178 179 return jack_types[(cfg & AC_DEFCFG_DEVICE) 180 >> AC_DEFCFG_DEVICE_SHIFT]; 181 } 182 EXPORT_SYMBOL_HDA(snd_hda_get_jack_type); 183 184 /* 185 * Compose a 32bit command word to be sent to the HD-audio controller 186 */ 187 static inline unsigned int 188 make_codec_cmd(struct hda_codec *codec, hda_nid_t nid, int flags, 189 unsigned int verb, unsigned int parm) 190 { 191 u32 val; 192 193 if ((codec->addr & ~0xf) || (nid & ~0x7f) || 194 (verb & ~0xfff) || (parm & ~0xffff)) { 195 printk(KERN_ERR "hda-codec: out of range cmd %x:%x:%x:%x\n", 196 codec->addr, nid, verb, parm); 197 return ~0; 198 } 199 200 val = (u32)codec->addr << 28; 201 val |= (u32)nid << 20; 202 val |= verb << 8; 203 val |= parm; 204 return val; 205 } 206 207 /* 208 * Send and receive a verb 209 */ 210 static int codec_exec_verb(struct hda_codec *codec, unsigned int cmd, 211 int flags, unsigned int *res) 212 { 213 struct hda_bus *bus = codec->bus; 214 int err; 215 216 if (cmd == ~0) 217 return -1; 218 219 if (res) 220 *res = -1; 221 again: 222 snd_hda_power_up(codec); 223 mutex_lock(&bus->cmd_mutex); 224 if (flags & HDA_RW_NO_RESPONSE_FALLBACK) 225 bus->no_response_fallback = 1; 226 for (;;) { 227 trace_hda_send_cmd(codec, cmd); 228 err = bus->ops.command(bus, cmd); 229 if (err != -EAGAIN) 230 break; 231 /* process pending verbs */ 232 bus->ops.get_response(bus, codec->addr); 233 } 234 if (!err && res) { 235 *res = bus->ops.get_response(bus, codec->addr); 236 trace_hda_get_response(codec, *res); 237 } 238 bus->no_response_fallback = 0; 239 mutex_unlock(&bus->cmd_mutex); 240 snd_hda_power_down(codec); 241 if (!codec_in_pm(codec) && res && *res == -1 && bus->rirb_error) { 242 if (bus->response_reset) { 243 snd_printd("hda_codec: resetting BUS due to " 244 "fatal communication error\n"); 245 trace_hda_bus_reset(bus); 246 bus->ops.bus_reset(bus); 247 } 248 goto again; 249 } 250 /* clear reset-flag when the communication gets recovered */ 251 if (!err || codec_in_pm(codec)) 252 bus->response_reset = 0; 253 return err; 254 } 255 256 /** 257 * snd_hda_codec_read - send a command and get the response 258 * @codec: the HDA codec 259 * @nid: NID to send the command 260 * @flags: optional bit flags 261 * @verb: the verb to send 262 * @parm: the parameter for the verb 263 * 264 * Send a single command and read the corresponding response. 265 * 266 * Returns the obtained response value, or -1 for an error. 267 */ 268 unsigned int snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid, 269 int flags, 270 unsigned int verb, unsigned int parm) 271 { 272 unsigned cmd = make_codec_cmd(codec, nid, flags, verb, parm); 273 unsigned int res; 274 if (codec_exec_verb(codec, cmd, flags, &res)) 275 return -1; 276 return res; 277 } 278 EXPORT_SYMBOL_HDA(snd_hda_codec_read); 279 280 /** 281 * snd_hda_codec_write - send a single command without waiting for response 282 * @codec: the HDA codec 283 * @nid: NID to send the command 284 * @flags: optional bit flags 285 * @verb: the verb to send 286 * @parm: the parameter for the verb 287 * 288 * Send a single command without waiting for response. 289 * 290 * Returns 0 if successful, or a negative error code. 291 */ 292 int snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int flags, 293 unsigned int verb, unsigned int parm) 294 { 295 unsigned int cmd = make_codec_cmd(codec, nid, flags, verb, parm); 296 unsigned int res; 297 return codec_exec_verb(codec, cmd, flags, 298 codec->bus->sync_write ? &res : NULL); 299 } 300 EXPORT_SYMBOL_HDA(snd_hda_codec_write); 301 302 /** 303 * snd_hda_sequence_write - sequence writes 304 * @codec: the HDA codec 305 * @seq: VERB array to send 306 * 307 * Send the commands sequentially from the given array. 308 * The array must be terminated with NID=0. 309 */ 310 void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq) 311 { 312 for (; seq->nid; seq++) 313 snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param); 314 } 315 EXPORT_SYMBOL_HDA(snd_hda_sequence_write); 316 317 /** 318 * snd_hda_get_sub_nodes - get the range of sub nodes 319 * @codec: the HDA codec 320 * @nid: NID to parse 321 * @start_id: the pointer to store the start NID 322 * 323 * Parse the NID and store the start NID of its sub-nodes. 324 * Returns the number of sub-nodes. 325 */ 326 int snd_hda_get_sub_nodes(struct hda_codec *codec, hda_nid_t nid, 327 hda_nid_t *start_id) 328 { 329 unsigned int parm; 330 331 parm = snd_hda_param_read(codec, nid, AC_PAR_NODE_COUNT); 332 if (parm == -1) 333 return 0; 334 *start_id = (parm >> 16) & 0x7fff; 335 return (int)(parm & 0x7fff); 336 } 337 EXPORT_SYMBOL_HDA(snd_hda_get_sub_nodes); 338 339 /* connection list element */ 340 struct hda_conn_list { 341 struct list_head list; 342 int len; 343 hda_nid_t nid; 344 hda_nid_t conns[0]; 345 }; 346 347 /* look up the cached results */ 348 static struct hda_conn_list * 349 lookup_conn_list(struct hda_codec *codec, hda_nid_t nid) 350 { 351 struct hda_conn_list *p; 352 list_for_each_entry(p, &codec->conn_list, list) { 353 if (p->nid == nid) 354 return p; 355 } 356 return NULL; 357 } 358 359 static int add_conn_list(struct hda_codec *codec, hda_nid_t nid, int len, 360 const hda_nid_t *list) 361 { 362 struct hda_conn_list *p; 363 364 p = kmalloc(sizeof(*p) + len * sizeof(hda_nid_t), GFP_KERNEL); 365 if (!p) 366 return -ENOMEM; 367 p->len = len; 368 p->nid = nid; 369 memcpy(p->conns, list, len * sizeof(hda_nid_t)); 370 list_add(&p->list, &codec->conn_list); 371 return 0; 372 } 373 374 static void remove_conn_list(struct hda_codec *codec) 375 { 376 while (!list_empty(&codec->conn_list)) { 377 struct hda_conn_list *p; 378 p = list_first_entry(&codec->conn_list, typeof(*p), list); 379 list_del(&p->list); 380 kfree(p); 381 } 382 } 383 384 /* read the connection and add to the cache */ 385 static int read_and_add_raw_conns(struct hda_codec *codec, hda_nid_t nid) 386 { 387 hda_nid_t list[32]; 388 hda_nid_t *result = list; 389 int len; 390 391 len = snd_hda_get_raw_connections(codec, nid, list, ARRAY_SIZE(list)); 392 if (len == -ENOSPC) { 393 len = snd_hda_get_num_raw_conns(codec, nid); 394 result = kmalloc(sizeof(hda_nid_t) * len, GFP_KERNEL); 395 if (!result) 396 return -ENOMEM; 397 len = snd_hda_get_raw_connections(codec, nid, result, len); 398 } 399 if (len >= 0) 400 len = snd_hda_override_conn_list(codec, nid, len, result); 401 if (result != list) 402 kfree(result); 403 return len; 404 } 405 406 /** 407 * snd_hda_get_conn_list - get connection list 408 * @codec: the HDA codec 409 * @nid: NID to parse 410 * @len: number of connection list entries 411 * @listp: the pointer to store NID list 412 * 413 * Parses the connection list of the given widget and stores the pointer 414 * to the list of NIDs. 415 * 416 * Returns the number of connections, or a negative error code. 417 * 418 * Note that the returned pointer isn't protected against the list 419 * modification. If snd_hda_override_conn_list() might be called 420 * concurrently, protect with a mutex appropriately. 421 */ 422 int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid, 423 const hda_nid_t **listp) 424 { 425 bool added = false; 426 427 for (;;) { 428 int err; 429 const struct hda_conn_list *p; 430 431 /* if the connection-list is already cached, read it */ 432 p = lookup_conn_list(codec, nid); 433 if (p) { 434 if (listp) 435 *listp = p->conns; 436 return p->len; 437 } 438 if (snd_BUG_ON(added)) 439 return -EINVAL; 440 441 err = read_and_add_raw_conns(codec, nid); 442 if (err < 0) 443 return err; 444 added = true; 445 } 446 } 447 EXPORT_SYMBOL_HDA(snd_hda_get_conn_list); 448 449 /** 450 * snd_hda_get_connections - copy connection list 451 * @codec: the HDA codec 452 * @nid: NID to parse 453 * @conn_list: connection list array; when NULL, checks only the size 454 * @max_conns: max. number of connections to store 455 * 456 * Parses the connection list of the given widget and stores the list 457 * of NIDs. 458 * 459 * Returns the number of connections, or a negative error code. 460 */ 461 int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid, 462 hda_nid_t *conn_list, int max_conns) 463 { 464 const hda_nid_t *list; 465 int len = snd_hda_get_conn_list(codec, nid, &list); 466 467 if (len > 0 && conn_list) { 468 if (len > max_conns) { 469 snd_printk(KERN_ERR "hda_codec: " 470 "Too many connections %d for NID 0x%x\n", 471 len, nid); 472 return -EINVAL; 473 } 474 memcpy(conn_list, list, len * sizeof(hda_nid_t)); 475 } 476 477 return len; 478 } 479 EXPORT_SYMBOL_HDA(snd_hda_get_connections); 480 481 /* return CONNLIST_LEN parameter of the given widget */ 482 static unsigned int get_num_conns(struct hda_codec *codec, hda_nid_t nid) 483 { 484 unsigned int wcaps = get_wcaps(codec, nid); 485 unsigned int parm; 486 487 if (!(wcaps & AC_WCAP_CONN_LIST) && 488 get_wcaps_type(wcaps) != AC_WID_VOL_KNB) 489 return 0; 490 491 parm = snd_hda_param_read(codec, nid, AC_PAR_CONNLIST_LEN); 492 if (parm == -1) 493 parm = 0; 494 return parm; 495 } 496 497 int snd_hda_get_num_raw_conns(struct hda_codec *codec, hda_nid_t nid) 498 { 499 return snd_hda_get_raw_connections(codec, nid, NULL, 0); 500 } 501 502 /** 503 * snd_hda_get_raw_connections - copy connection list without cache 504 * @codec: the HDA codec 505 * @nid: NID to parse 506 * @conn_list: connection list array 507 * @max_conns: max. number of connections to store 508 * 509 * Like snd_hda_get_connections(), copy the connection list but without 510 * checking through the connection-list cache. 511 * Currently called only from hda_proc.c, so not exported. 512 */ 513 int snd_hda_get_raw_connections(struct hda_codec *codec, hda_nid_t nid, 514 hda_nid_t *conn_list, int max_conns) 515 { 516 unsigned int parm; 517 int i, conn_len, conns; 518 unsigned int shift, num_elems, mask; 519 hda_nid_t prev_nid; 520 int null_count = 0; 521 522 parm = get_num_conns(codec, nid); 523 if (!parm) 524 return 0; 525 526 if (parm & AC_CLIST_LONG) { 527 /* long form */ 528 shift = 16; 529 num_elems = 2; 530 } else { 531 /* short form */ 532 shift = 8; 533 num_elems = 4; 534 } 535 conn_len = parm & AC_CLIST_LENGTH; 536 mask = (1 << (shift-1)) - 1; 537 538 if (!conn_len) 539 return 0; /* no connection */ 540 541 if (conn_len == 1) { 542 /* single connection */ 543 parm = snd_hda_codec_read(codec, nid, 0, 544 AC_VERB_GET_CONNECT_LIST, 0); 545 if (parm == -1 && codec->bus->rirb_error) 546 return -EIO; 547 if (conn_list) 548 conn_list[0] = parm & mask; 549 return 1; 550 } 551 552 /* multi connection */ 553 conns = 0; 554 prev_nid = 0; 555 for (i = 0; i < conn_len; i++) { 556 int range_val; 557 hda_nid_t val, n; 558 559 if (i % num_elems == 0) { 560 parm = snd_hda_codec_read(codec, nid, 0, 561 AC_VERB_GET_CONNECT_LIST, i); 562 if (parm == -1 && codec->bus->rirb_error) 563 return -EIO; 564 } 565 range_val = !!(parm & (1 << (shift-1))); /* ranges */ 566 val = parm & mask; 567 if (val == 0 && null_count++) { /* no second chance */ 568 snd_printk(KERN_WARNING "hda_codec: " 569 "invalid CONNECT_LIST verb %x[%i]:%x\n", 570 nid, i, parm); 571 return 0; 572 } 573 parm >>= shift; 574 if (range_val) { 575 /* ranges between the previous and this one */ 576 if (!prev_nid || prev_nid >= val) { 577 snd_printk(KERN_WARNING "hda_codec: " 578 "invalid dep_range_val %x:%x\n", 579 prev_nid, val); 580 continue; 581 } 582 for (n = prev_nid + 1; n <= val; n++) { 583 if (conn_list) { 584 if (conns >= max_conns) 585 return -ENOSPC; 586 conn_list[conns] = n; 587 } 588 conns++; 589 } 590 } else { 591 if (conn_list) { 592 if (conns >= max_conns) 593 return -ENOSPC; 594 conn_list[conns] = val; 595 } 596 conns++; 597 } 598 prev_nid = val; 599 } 600 return conns; 601 } 602 603 /** 604 * snd_hda_override_conn_list - add/modify the connection-list to cache 605 * @codec: the HDA codec 606 * @nid: NID to parse 607 * @len: number of connection list entries 608 * @list: the list of connection entries 609 * 610 * Add or modify the given connection-list to the cache. If the corresponding 611 * cache already exists, invalidate it and append a new one. 612 * 613 * Returns zero or a negative error code. 614 */ 615 int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int len, 616 const hda_nid_t *list) 617 { 618 struct hda_conn_list *p; 619 620 p = lookup_conn_list(codec, nid); 621 if (p) { 622 list_del(&p->list); 623 kfree(p); 624 } 625 626 return add_conn_list(codec, nid, len, list); 627 } 628 EXPORT_SYMBOL_HDA(snd_hda_override_conn_list); 629 630 /** 631 * snd_hda_get_conn_index - get the connection index of the given NID 632 * @codec: the HDA codec 633 * @mux: NID containing the list 634 * @nid: NID to select 635 * @recursive: 1 when searching NID recursively, otherwise 0 636 * 637 * Parses the connection list of the widget @mux and checks whether the 638 * widget @nid is present. If it is, return the connection index. 639 * Otherwise it returns -1. 640 */ 641 int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux, 642 hda_nid_t nid, int recursive) 643 { 644 const hda_nid_t *conn; 645 int i, nums; 646 647 nums = snd_hda_get_conn_list(codec, mux, &conn); 648 for (i = 0; i < nums; i++) 649 if (conn[i] == nid) 650 return i; 651 if (!recursive) 652 return -1; 653 if (recursive > 10) { 654 snd_printd("hda_codec: too deep connection for 0x%x\n", nid); 655 return -1; 656 } 657 recursive++; 658 for (i = 0; i < nums; i++) { 659 unsigned int type = get_wcaps_type(get_wcaps(codec, conn[i])); 660 if (type == AC_WID_PIN || type == AC_WID_AUD_OUT) 661 continue; 662 if (snd_hda_get_conn_index(codec, conn[i], nid, recursive) >= 0) 663 return i; 664 } 665 return -1; 666 } 667 EXPORT_SYMBOL_HDA(snd_hda_get_conn_index); 668 669 670 /* return DEVLIST_LEN parameter of the given widget */ 671 static unsigned int get_num_devices(struct hda_codec *codec, hda_nid_t nid) 672 { 673 unsigned int wcaps = get_wcaps(codec, nid); 674 unsigned int parm; 675 676 if (!codec->dp_mst || !(wcaps & AC_WCAP_DIGITAL) || 677 get_wcaps_type(wcaps) != AC_WID_PIN) 678 return 0; 679 680 parm = snd_hda_param_read(codec, nid, AC_PAR_DEVLIST_LEN); 681 if (parm == -1 && codec->bus->rirb_error) 682 parm = 0; 683 return parm & AC_DEV_LIST_LEN_MASK; 684 } 685 686 /** 687 * snd_hda_get_devices - copy device list without cache 688 * @codec: the HDA codec 689 * @nid: NID of the pin to parse 690 * @dev_list: device list array 691 * @max_devices: max. number of devices to store 692 * 693 * Copy the device list. This info is dynamic and so not cached. 694 * Currently called only from hda_proc.c, so not exported. 695 */ 696 int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid, 697 u8 *dev_list, int max_devices) 698 { 699 unsigned int parm; 700 int i, dev_len, devices; 701 702 parm = get_num_devices(codec, nid); 703 if (!parm) /* not multi-stream capable */ 704 return 0; 705 706 dev_len = parm + 1; 707 dev_len = dev_len < max_devices ? dev_len : max_devices; 708 709 devices = 0; 710 while (devices < dev_len) { 711 parm = snd_hda_codec_read(codec, nid, 0, 712 AC_VERB_GET_DEVICE_LIST, devices); 713 if (parm == -1 && codec->bus->rirb_error) 714 break; 715 716 for (i = 0; i < 8; i++) { 717 dev_list[devices] = (u8)parm; 718 parm >>= 4; 719 devices++; 720 if (devices >= dev_len) 721 break; 722 } 723 } 724 return devices; 725 } 726 727 /** 728 * snd_hda_queue_unsol_event - add an unsolicited event to queue 729 * @bus: the BUS 730 * @res: unsolicited event (lower 32bit of RIRB entry) 731 * @res_ex: codec addr and flags (upper 32bit or RIRB entry) 732 * 733 * Adds the given event to the queue. The events are processed in 734 * the workqueue asynchronously. Call this function in the interrupt 735 * hanlder when RIRB receives an unsolicited event. 736 * 737 * Returns 0 if successful, or a negative error code. 738 */ 739 int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex) 740 { 741 struct hda_bus_unsolicited *unsol; 742 unsigned int wp; 743 744 if (!bus || !bus->workq) 745 return 0; 746 747 trace_hda_unsol_event(bus, res, res_ex); 748 unsol = bus->unsol; 749 if (!unsol) 750 return 0; 751 752 wp = (unsol->wp + 1) % HDA_UNSOL_QUEUE_SIZE; 753 unsol->wp = wp; 754 755 wp <<= 1; 756 unsol->queue[wp] = res; 757 unsol->queue[wp + 1] = res_ex; 758 759 queue_work(bus->workq, &unsol->work); 760 761 return 0; 762 } 763 EXPORT_SYMBOL_HDA(snd_hda_queue_unsol_event); 764 765 /* 766 * process queued unsolicited events 767 */ 768 static void process_unsol_events(struct work_struct *work) 769 { 770 struct hda_bus_unsolicited *unsol = 771 container_of(work, struct hda_bus_unsolicited, work); 772 struct hda_bus *bus = unsol->bus; 773 struct hda_codec *codec; 774 unsigned int rp, caddr, res; 775 776 while (unsol->rp != unsol->wp) { 777 rp = (unsol->rp + 1) % HDA_UNSOL_QUEUE_SIZE; 778 unsol->rp = rp; 779 rp <<= 1; 780 res = unsol->queue[rp]; 781 caddr = unsol->queue[rp + 1]; 782 if (!(caddr & (1 << 4))) /* no unsolicited event? */ 783 continue; 784 codec = bus->caddr_tbl[caddr & 0x0f]; 785 if (codec && codec->patch_ops.unsol_event) 786 codec->patch_ops.unsol_event(codec, res); 787 } 788 } 789 790 /* 791 * initialize unsolicited queue 792 */ 793 static int init_unsol_queue(struct hda_bus *bus) 794 { 795 struct hda_bus_unsolicited *unsol; 796 797 if (bus->unsol) /* already initialized */ 798 return 0; 799 800 unsol = kzalloc(sizeof(*unsol), GFP_KERNEL); 801 if (!unsol) { 802 snd_printk(KERN_ERR "hda_codec: " 803 "can't allocate unsolicited queue\n"); 804 return -ENOMEM; 805 } 806 INIT_WORK(&unsol->work, process_unsol_events); 807 unsol->bus = bus; 808 bus->unsol = unsol; 809 return 0; 810 } 811 812 /* 813 * destructor 814 */ 815 static void snd_hda_codec_free(struct hda_codec *codec); 816 817 static int snd_hda_bus_free(struct hda_bus *bus) 818 { 819 struct hda_codec *codec, *n; 820 821 if (!bus) 822 return 0; 823 if (bus->workq) 824 flush_workqueue(bus->workq); 825 if (bus->unsol) 826 kfree(bus->unsol); 827 list_for_each_entry_safe(codec, n, &bus->codec_list, list) { 828 snd_hda_codec_free(codec); 829 } 830 if (bus->ops.private_free) 831 bus->ops.private_free(bus); 832 if (bus->workq) 833 destroy_workqueue(bus->workq); 834 kfree(bus); 835 return 0; 836 } 837 838 static int snd_hda_bus_dev_free(struct snd_device *device) 839 { 840 struct hda_bus *bus = device->device_data; 841 bus->shutdown = 1; 842 return snd_hda_bus_free(bus); 843 } 844 845 #ifdef CONFIG_SND_HDA_HWDEP 846 static int snd_hda_bus_dev_register(struct snd_device *device) 847 { 848 struct hda_bus *bus = device->device_data; 849 struct hda_codec *codec; 850 list_for_each_entry(codec, &bus->codec_list, list) { 851 snd_hda_hwdep_add_sysfs(codec); 852 snd_hda_hwdep_add_power_sysfs(codec); 853 } 854 return 0; 855 } 856 #else 857 #define snd_hda_bus_dev_register NULL 858 #endif 859 860 /** 861 * snd_hda_bus_new - create a HDA bus 862 * @card: the card entry 863 * @temp: the template for hda_bus information 864 * @busp: the pointer to store the created bus instance 865 * 866 * Returns 0 if successful, or a negative error code. 867 */ 868 int snd_hda_bus_new(struct snd_card *card, 869 const struct hda_bus_template *temp, 870 struct hda_bus **busp) 871 { 872 struct hda_bus *bus; 873 int err; 874 static struct snd_device_ops dev_ops = { 875 .dev_register = snd_hda_bus_dev_register, 876 .dev_free = snd_hda_bus_dev_free, 877 }; 878 879 if (snd_BUG_ON(!temp)) 880 return -EINVAL; 881 if (snd_BUG_ON(!temp->ops.command || !temp->ops.get_response)) 882 return -EINVAL; 883 884 if (busp) 885 *busp = NULL; 886 887 bus = kzalloc(sizeof(*bus), GFP_KERNEL); 888 if (bus == NULL) { 889 snd_printk(KERN_ERR "can't allocate struct hda_bus\n"); 890 return -ENOMEM; 891 } 892 893 bus->card = card; 894 bus->private_data = temp->private_data; 895 bus->pci = temp->pci; 896 bus->modelname = temp->modelname; 897 bus->power_save = temp->power_save; 898 bus->ops = temp->ops; 899 900 mutex_init(&bus->cmd_mutex); 901 mutex_init(&bus->prepare_mutex); 902 INIT_LIST_HEAD(&bus->codec_list); 903 904 snprintf(bus->workq_name, sizeof(bus->workq_name), 905 "hd-audio%d", card->number); 906 bus->workq = create_singlethread_workqueue(bus->workq_name); 907 if (!bus->workq) { 908 snd_printk(KERN_ERR "cannot create workqueue %s\n", 909 bus->workq_name); 910 kfree(bus); 911 return -ENOMEM; 912 } 913 914 err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops); 915 if (err < 0) { 916 snd_hda_bus_free(bus); 917 return err; 918 } 919 if (busp) 920 *busp = bus; 921 return 0; 922 } 923 EXPORT_SYMBOL_HDA(snd_hda_bus_new); 924 925 #ifdef CONFIG_SND_HDA_GENERIC 926 #define is_generic_config(codec) \ 927 (codec->modelname && !strcmp(codec->modelname, "generic")) 928 #else 929 #define is_generic_config(codec) 0 930 #endif 931 932 #ifdef MODULE 933 #define HDA_MODREQ_MAX_COUNT 2 /* two request_modules()'s */ 934 #else 935 #define HDA_MODREQ_MAX_COUNT 0 /* all presets are statically linked */ 936 #endif 937 938 /* 939 * find a matching codec preset 940 */ 941 static const struct hda_codec_preset * 942 find_codec_preset(struct hda_codec *codec) 943 { 944 struct hda_codec_preset_list *tbl; 945 const struct hda_codec_preset *preset; 946 unsigned int mod_requested = 0; 947 948 if (is_generic_config(codec)) 949 return NULL; /* use the generic parser */ 950 951 again: 952 mutex_lock(&preset_mutex); 953 list_for_each_entry(tbl, &hda_preset_tables, list) { 954 if (!try_module_get(tbl->owner)) { 955 snd_printk(KERN_ERR "hda_codec: cannot module_get\n"); 956 continue; 957 } 958 for (preset = tbl->preset; preset->id; preset++) { 959 u32 mask = preset->mask; 960 if (preset->afg && preset->afg != codec->afg) 961 continue; 962 if (preset->mfg && preset->mfg != codec->mfg) 963 continue; 964 if (!mask) 965 mask = ~0; 966 if (preset->id == (codec->vendor_id & mask) && 967 (!preset->rev || 968 preset->rev == codec->revision_id)) { 969 mutex_unlock(&preset_mutex); 970 codec->owner = tbl->owner; 971 return preset; 972 } 973 } 974 module_put(tbl->owner); 975 } 976 mutex_unlock(&preset_mutex); 977 978 if (mod_requested < HDA_MODREQ_MAX_COUNT) { 979 char name[32]; 980 if (!mod_requested) 981 snprintf(name, sizeof(name), "snd-hda-codec-id:%08x", 982 codec->vendor_id); 983 else 984 snprintf(name, sizeof(name), "snd-hda-codec-id:%04x*", 985 (codec->vendor_id >> 16) & 0xffff); 986 request_module(name); 987 mod_requested++; 988 goto again; 989 } 990 return NULL; 991 } 992 993 /* 994 * get_codec_name - store the codec name 995 */ 996 static int get_codec_name(struct hda_codec *codec) 997 { 998 const struct hda_vendor_id *c; 999 const char *vendor = NULL; 1000 u16 vendor_id = codec->vendor_id >> 16; 1001 char tmp[16]; 1002 1003 if (codec->vendor_name) 1004 goto get_chip_name; 1005 1006 for (c = hda_vendor_ids; c->id; c++) { 1007 if (c->id == vendor_id) { 1008 vendor = c->name; 1009 break; 1010 } 1011 } 1012 if (!vendor) { 1013 sprintf(tmp, "Generic %04x", vendor_id); 1014 vendor = tmp; 1015 } 1016 codec->vendor_name = kstrdup(vendor, GFP_KERNEL); 1017 if (!codec->vendor_name) 1018 return -ENOMEM; 1019 1020 get_chip_name: 1021 if (codec->chip_name) 1022 return 0; 1023 1024 if (codec->preset && codec->preset->name) 1025 codec->chip_name = kstrdup(codec->preset->name, GFP_KERNEL); 1026 else { 1027 sprintf(tmp, "ID %x", codec->vendor_id & 0xffff); 1028 codec->chip_name = kstrdup(tmp, GFP_KERNEL); 1029 } 1030 if (!codec->chip_name) 1031 return -ENOMEM; 1032 return 0; 1033 } 1034 1035 /* 1036 * look for an AFG and MFG nodes 1037 */ 1038 static void setup_fg_nodes(struct hda_codec *codec) 1039 { 1040 int i, total_nodes, function_id; 1041 hda_nid_t nid; 1042 1043 total_nodes = snd_hda_get_sub_nodes(codec, AC_NODE_ROOT, &nid); 1044 for (i = 0; i < total_nodes; i++, nid++) { 1045 function_id = snd_hda_param_read(codec, nid, 1046 AC_PAR_FUNCTION_TYPE); 1047 switch (function_id & 0xff) { 1048 case AC_GRP_AUDIO_FUNCTION: 1049 codec->afg = nid; 1050 codec->afg_function_id = function_id & 0xff; 1051 codec->afg_unsol = (function_id >> 8) & 1; 1052 break; 1053 case AC_GRP_MODEM_FUNCTION: 1054 codec->mfg = nid; 1055 codec->mfg_function_id = function_id & 0xff; 1056 codec->mfg_unsol = (function_id >> 8) & 1; 1057 break; 1058 default: 1059 break; 1060 } 1061 } 1062 } 1063 1064 /* 1065 * read widget caps for each widget and store in cache 1066 */ 1067 static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node) 1068 { 1069 int i; 1070 hda_nid_t nid; 1071 1072 codec->num_nodes = snd_hda_get_sub_nodes(codec, fg_node, 1073 &codec->start_nid); 1074 codec->wcaps = kmalloc(codec->num_nodes * 4, GFP_KERNEL); 1075 if (!codec->wcaps) 1076 return -ENOMEM; 1077 nid = codec->start_nid; 1078 for (i = 0; i < codec->num_nodes; i++, nid++) 1079 codec->wcaps[i] = snd_hda_param_read(codec, nid, 1080 AC_PAR_AUDIO_WIDGET_CAP); 1081 return 0; 1082 } 1083 1084 /* read all pin default configurations and save codec->init_pins */ 1085 static int read_pin_defaults(struct hda_codec *codec) 1086 { 1087 int i; 1088 hda_nid_t nid = codec->start_nid; 1089 1090 for (i = 0; i < codec->num_nodes; i++, nid++) { 1091 struct hda_pincfg *pin; 1092 unsigned int wcaps = get_wcaps(codec, nid); 1093 unsigned int wid_type = get_wcaps_type(wcaps); 1094 if (wid_type != AC_WID_PIN) 1095 continue; 1096 pin = snd_array_new(&codec->init_pins); 1097 if (!pin) 1098 return -ENOMEM; 1099 pin->nid = nid; 1100 pin->cfg = snd_hda_codec_read(codec, nid, 0, 1101 AC_VERB_GET_CONFIG_DEFAULT, 0); 1102 pin->ctrl = snd_hda_codec_read(codec, nid, 0, 1103 AC_VERB_GET_PIN_WIDGET_CONTROL, 1104 0); 1105 } 1106 return 0; 1107 } 1108 1109 /* look up the given pin config list and return the item matching with NID */ 1110 static struct hda_pincfg *look_up_pincfg(struct hda_codec *codec, 1111 struct snd_array *array, 1112 hda_nid_t nid) 1113 { 1114 int i; 1115 for (i = 0; i < array->used; i++) { 1116 struct hda_pincfg *pin = snd_array_elem(array, i); 1117 if (pin->nid == nid) 1118 return pin; 1119 } 1120 return NULL; 1121 } 1122 1123 /* set the current pin config value for the given NID. 1124 * the value is cached, and read via snd_hda_codec_get_pincfg() 1125 */ 1126 int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list, 1127 hda_nid_t nid, unsigned int cfg) 1128 { 1129 struct hda_pincfg *pin; 1130 1131 /* the check below may be invalid when pins are added by a fixup 1132 * dynamically (e.g. via snd_hda_codec_update_widgets()), so disabled 1133 * for now 1134 */ 1135 /* 1136 if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN) 1137 return -EINVAL; 1138 */ 1139 1140 pin = look_up_pincfg(codec, list, nid); 1141 if (!pin) { 1142 pin = snd_array_new(list); 1143 if (!pin) 1144 return -ENOMEM; 1145 pin->nid = nid; 1146 } 1147 pin->cfg = cfg; 1148 return 0; 1149 } 1150 1151 /** 1152 * snd_hda_codec_set_pincfg - Override a pin default configuration 1153 * @codec: the HDA codec 1154 * @nid: NID to set the pin config 1155 * @cfg: the pin default config value 1156 * 1157 * Override a pin default configuration value in the cache. 1158 * This value can be read by snd_hda_codec_get_pincfg() in a higher 1159 * priority than the real hardware value. 1160 */ 1161 int snd_hda_codec_set_pincfg(struct hda_codec *codec, 1162 hda_nid_t nid, unsigned int cfg) 1163 { 1164 return snd_hda_add_pincfg(codec, &codec->driver_pins, nid, cfg); 1165 } 1166 EXPORT_SYMBOL_HDA(snd_hda_codec_set_pincfg); 1167 1168 /** 1169 * snd_hda_codec_get_pincfg - Obtain a pin-default configuration 1170 * @codec: the HDA codec 1171 * @nid: NID to get the pin config 1172 * 1173 * Get the current pin config value of the given pin NID. 1174 * If the pincfg value is cached or overridden via sysfs or driver, 1175 * returns the cached value. 1176 */ 1177 unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid) 1178 { 1179 struct hda_pincfg *pin; 1180 1181 #ifdef CONFIG_SND_HDA_HWDEP 1182 { 1183 unsigned int cfg = 0; 1184 mutex_lock(&codec->user_mutex); 1185 pin = look_up_pincfg(codec, &codec->user_pins, nid); 1186 if (pin) 1187 cfg = pin->cfg; 1188 mutex_unlock(&codec->user_mutex); 1189 if (cfg) 1190 return cfg; 1191 } 1192 #endif 1193 pin = look_up_pincfg(codec, &codec->driver_pins, nid); 1194 if (pin) 1195 return pin->cfg; 1196 pin = look_up_pincfg(codec, &codec->init_pins, nid); 1197 if (pin) 1198 return pin->cfg; 1199 return 0; 1200 } 1201 EXPORT_SYMBOL_HDA(snd_hda_codec_get_pincfg); 1202 1203 /* remember the current pinctl target value */ 1204 int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid, 1205 unsigned int val) 1206 { 1207 struct hda_pincfg *pin; 1208 1209 pin = look_up_pincfg(codec, &codec->init_pins, nid); 1210 if (!pin) 1211 return -EINVAL; 1212 pin->target = val; 1213 return 0; 1214 } 1215 EXPORT_SYMBOL_HDA(snd_hda_codec_set_pin_target); 1216 1217 /* return the current pinctl target value */ 1218 int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid) 1219 { 1220 struct hda_pincfg *pin; 1221 1222 pin = look_up_pincfg(codec, &codec->init_pins, nid); 1223 if (!pin) 1224 return 0; 1225 return pin->target; 1226 } 1227 EXPORT_SYMBOL_HDA(snd_hda_codec_get_pin_target); 1228 1229 /** 1230 * snd_hda_shutup_pins - Shut up all pins 1231 * @codec: the HDA codec 1232 * 1233 * Clear all pin controls to shup up before suspend for avoiding click noise. 1234 * The controls aren't cached so that they can be resumed properly. 1235 */ 1236 void snd_hda_shutup_pins(struct hda_codec *codec) 1237 { 1238 int i; 1239 /* don't shut up pins when unloading the driver; otherwise it breaks 1240 * the default pin setup at the next load of the driver 1241 */ 1242 if (codec->bus->shutdown) 1243 return; 1244 for (i = 0; i < codec->init_pins.used; i++) { 1245 struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i); 1246 /* use read here for syncing after issuing each verb */ 1247 snd_hda_codec_read(codec, pin->nid, 0, 1248 AC_VERB_SET_PIN_WIDGET_CONTROL, 0); 1249 } 1250 codec->pins_shutup = 1; 1251 } 1252 EXPORT_SYMBOL_HDA(snd_hda_shutup_pins); 1253 1254 #ifdef CONFIG_PM 1255 /* Restore the pin controls cleared previously via snd_hda_shutup_pins() */ 1256 static void restore_shutup_pins(struct hda_codec *codec) 1257 { 1258 int i; 1259 if (!codec->pins_shutup) 1260 return; 1261 if (codec->bus->shutdown) 1262 return; 1263 for (i = 0; i < codec->init_pins.used; i++) { 1264 struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i); 1265 snd_hda_codec_write(codec, pin->nid, 0, 1266 AC_VERB_SET_PIN_WIDGET_CONTROL, 1267 pin->ctrl); 1268 } 1269 codec->pins_shutup = 0; 1270 } 1271 #endif 1272 1273 static void hda_jackpoll_work(struct work_struct *work) 1274 { 1275 struct hda_codec *codec = 1276 container_of(work, struct hda_codec, jackpoll_work.work); 1277 1278 snd_hda_jack_set_dirty_all(codec); 1279 snd_hda_jack_poll_all(codec); 1280 1281 if (!codec->jackpoll_interval) 1282 return; 1283 1284 queue_delayed_work(codec->bus->workq, &codec->jackpoll_work, 1285 codec->jackpoll_interval); 1286 } 1287 1288 static void init_hda_cache(struct hda_cache_rec *cache, 1289 unsigned int record_size); 1290 static void free_hda_cache(struct hda_cache_rec *cache); 1291 1292 /* release all pincfg lists */ 1293 static void free_init_pincfgs(struct hda_codec *codec) 1294 { 1295 snd_array_free(&codec->driver_pins); 1296 #ifdef CONFIG_SND_HDA_HWDEP 1297 snd_array_free(&codec->user_pins); 1298 #endif 1299 snd_array_free(&codec->init_pins); 1300 } 1301 1302 /* 1303 * audio-converter setup caches 1304 */ 1305 struct hda_cvt_setup { 1306 hda_nid_t nid; 1307 u8 stream_tag; 1308 u8 channel_id; 1309 u16 format_id; 1310 unsigned char active; /* cvt is currently used */ 1311 unsigned char dirty; /* setups should be cleared */ 1312 }; 1313 1314 /* get or create a cache entry for the given audio converter NID */ 1315 static struct hda_cvt_setup * 1316 get_hda_cvt_setup(struct hda_codec *codec, hda_nid_t nid) 1317 { 1318 struct hda_cvt_setup *p; 1319 int i; 1320 1321 for (i = 0; i < codec->cvt_setups.used; i++) { 1322 p = snd_array_elem(&codec->cvt_setups, i); 1323 if (p->nid == nid) 1324 return p; 1325 } 1326 p = snd_array_new(&codec->cvt_setups); 1327 if (p) 1328 p->nid = nid; 1329 return p; 1330 } 1331 1332 /* 1333 * codec destructor 1334 */ 1335 static void snd_hda_codec_free(struct hda_codec *codec) 1336 { 1337 if (!codec) 1338 return; 1339 cancel_delayed_work_sync(&codec->jackpoll_work); 1340 snd_hda_jack_tbl_clear(codec); 1341 free_init_pincfgs(codec); 1342 #ifdef CONFIG_PM 1343 cancel_delayed_work(&codec->power_work); 1344 flush_workqueue(codec->bus->workq); 1345 #endif 1346 list_del(&codec->list); 1347 snd_array_free(&codec->mixers); 1348 snd_array_free(&codec->nids); 1349 snd_array_free(&codec->cvt_setups); 1350 snd_array_free(&codec->spdif_out); 1351 remove_conn_list(codec); 1352 codec->bus->caddr_tbl[codec->addr] = NULL; 1353 if (codec->patch_ops.free) 1354 codec->patch_ops.free(codec); 1355 #ifdef CONFIG_PM 1356 if (!codec->pm_down_notified) /* cancel leftover refcounts */ 1357 hda_call_pm_notify(codec->bus, false); 1358 #endif 1359 module_put(codec->owner); 1360 free_hda_cache(&codec->amp_cache); 1361 free_hda_cache(&codec->cmd_cache); 1362 kfree(codec->vendor_name); 1363 kfree(codec->chip_name); 1364 kfree(codec->modelname); 1365 kfree(codec->wcaps); 1366 kfree(codec); 1367 } 1368 1369 static bool snd_hda_codec_get_supported_ps(struct hda_codec *codec, 1370 hda_nid_t fg, unsigned int power_state); 1371 1372 static unsigned int hda_set_power_state(struct hda_codec *codec, 1373 unsigned int power_state); 1374 1375 /** 1376 * snd_hda_codec_new - create a HDA codec 1377 * @bus: the bus to assign 1378 * @codec_addr: the codec address 1379 * @codecp: the pointer to store the generated codec 1380 * 1381 * Returns 0 if successful, or a negative error code. 1382 */ 1383 int snd_hda_codec_new(struct hda_bus *bus, 1384 unsigned int codec_addr, 1385 struct hda_codec **codecp) 1386 { 1387 struct hda_codec *codec; 1388 char component[31]; 1389 hda_nid_t fg; 1390 int err; 1391 1392 if (snd_BUG_ON(!bus)) 1393 return -EINVAL; 1394 if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS)) 1395 return -EINVAL; 1396 1397 if (bus->caddr_tbl[codec_addr]) { 1398 snd_printk(KERN_ERR "hda_codec: " 1399 "address 0x%x is already occupied\n", codec_addr); 1400 return -EBUSY; 1401 } 1402 1403 codec = kzalloc(sizeof(*codec), GFP_KERNEL); 1404 if (codec == NULL) { 1405 snd_printk(KERN_ERR "can't allocate struct hda_codec\n"); 1406 return -ENOMEM; 1407 } 1408 1409 codec->bus = bus; 1410 codec->addr = codec_addr; 1411 mutex_init(&codec->spdif_mutex); 1412 mutex_init(&codec->control_mutex); 1413 mutex_init(&codec->hash_mutex); 1414 init_hda_cache(&codec->amp_cache, sizeof(struct hda_amp_info)); 1415 init_hda_cache(&codec->cmd_cache, sizeof(struct hda_cache_head)); 1416 snd_array_init(&codec->mixers, sizeof(struct hda_nid_item), 32); 1417 snd_array_init(&codec->nids, sizeof(struct hda_nid_item), 32); 1418 snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16); 1419 snd_array_init(&codec->driver_pins, sizeof(struct hda_pincfg), 16); 1420 snd_array_init(&codec->cvt_setups, sizeof(struct hda_cvt_setup), 8); 1421 snd_array_init(&codec->spdif_out, sizeof(struct hda_spdif_out), 16); 1422 snd_array_init(&codec->jacktbl, sizeof(struct hda_jack_tbl), 16); 1423 snd_array_init(&codec->verbs, sizeof(struct hda_verb *), 8); 1424 INIT_LIST_HEAD(&codec->conn_list); 1425 1426 INIT_DELAYED_WORK(&codec->jackpoll_work, hda_jackpoll_work); 1427 1428 #ifdef CONFIG_PM 1429 spin_lock_init(&codec->power_lock); 1430 INIT_DELAYED_WORK(&codec->power_work, hda_power_work); 1431 /* snd_hda_codec_new() marks the codec as power-up, and leave it as is. 1432 * the caller has to power down appropriatley after initialization 1433 * phase. 1434 */ 1435 hda_keep_power_on(codec); 1436 hda_call_pm_notify(bus, true); 1437 #endif 1438 1439 if (codec->bus->modelname) { 1440 codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL); 1441 if (!codec->modelname) { 1442 snd_hda_codec_free(codec); 1443 return -ENODEV; 1444 } 1445 } 1446 1447 list_add_tail(&codec->list, &bus->codec_list); 1448 bus->caddr_tbl[codec_addr] = codec; 1449 1450 codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT, 1451 AC_PAR_VENDOR_ID); 1452 if (codec->vendor_id == -1) 1453 /* read again, hopefully the access method was corrected 1454 * in the last read... 1455 */ 1456 codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT, 1457 AC_PAR_VENDOR_ID); 1458 codec->subsystem_id = snd_hda_param_read(codec, AC_NODE_ROOT, 1459 AC_PAR_SUBSYSTEM_ID); 1460 codec->revision_id = snd_hda_param_read(codec, AC_NODE_ROOT, 1461 AC_PAR_REV_ID); 1462 1463 setup_fg_nodes(codec); 1464 if (!codec->afg && !codec->mfg) { 1465 snd_printdd("hda_codec: no AFG or MFG node found\n"); 1466 err = -ENODEV; 1467 goto error; 1468 } 1469 1470 fg = codec->afg ? codec->afg : codec->mfg; 1471 err = read_widget_caps(codec, fg); 1472 if (err < 0) { 1473 snd_printk(KERN_ERR "hda_codec: cannot malloc\n"); 1474 goto error; 1475 } 1476 err = read_pin_defaults(codec); 1477 if (err < 0) 1478 goto error; 1479 1480 if (!codec->subsystem_id) { 1481 codec->subsystem_id = 1482 snd_hda_codec_read(codec, fg, 0, 1483 AC_VERB_GET_SUBSYSTEM_ID, 0); 1484 } 1485 1486 #ifdef CONFIG_PM 1487 codec->d3_stop_clk = snd_hda_codec_get_supported_ps(codec, fg, 1488 AC_PWRST_CLKSTOP); 1489 if (!codec->d3_stop_clk) 1490 bus->power_keep_link_on = 1; 1491 #endif 1492 codec->epss = snd_hda_codec_get_supported_ps(codec, fg, 1493 AC_PWRST_EPSS); 1494 1495 /* power-up all before initialization */ 1496 hda_set_power_state(codec, AC_PWRST_D0); 1497 1498 snd_hda_codec_proc_new(codec); 1499 1500 snd_hda_create_hwdep(codec); 1501 1502 sprintf(component, "HDA:%08x,%08x,%08x", codec->vendor_id, 1503 codec->subsystem_id, codec->revision_id); 1504 snd_component_add(codec->bus->card, component); 1505 1506 if (codecp) 1507 *codecp = codec; 1508 return 0; 1509 1510 error: 1511 snd_hda_codec_free(codec); 1512 return err; 1513 } 1514 EXPORT_SYMBOL_HDA(snd_hda_codec_new); 1515 1516 int snd_hda_codec_update_widgets(struct hda_codec *codec) 1517 { 1518 hda_nid_t fg; 1519 int err; 1520 1521 /* Assume the function group node does not change, 1522 * only the widget nodes may change. 1523 */ 1524 kfree(codec->wcaps); 1525 fg = codec->afg ? codec->afg : codec->mfg; 1526 err = read_widget_caps(codec, fg); 1527 if (err < 0) { 1528 snd_printk(KERN_ERR "hda_codec: cannot malloc\n"); 1529 return err; 1530 } 1531 1532 snd_array_free(&codec->init_pins); 1533 err = read_pin_defaults(codec); 1534 1535 return err; 1536 } 1537 EXPORT_SYMBOL_HDA(snd_hda_codec_update_widgets); 1538 1539 1540 /** 1541 * snd_hda_codec_configure - (Re-)configure the HD-audio codec 1542 * @codec: the HDA codec 1543 * 1544 * Start parsing of the given codec tree and (re-)initialize the whole 1545 * patch instance. 1546 * 1547 * Returns 0 if successful or a negative error code. 1548 */ 1549 int snd_hda_codec_configure(struct hda_codec *codec) 1550 { 1551 int err; 1552 1553 codec->preset = find_codec_preset(codec); 1554 if (!codec->vendor_name || !codec->chip_name) { 1555 err = get_codec_name(codec); 1556 if (err < 0) 1557 return err; 1558 } 1559 1560 if (is_generic_config(codec)) { 1561 err = snd_hda_parse_generic_codec(codec); 1562 goto patched; 1563 } 1564 if (codec->preset && codec->preset->patch) { 1565 err = codec->preset->patch(codec); 1566 goto patched; 1567 } 1568 1569 /* call the default parser */ 1570 err = snd_hda_parse_generic_codec(codec); 1571 if (err < 0) 1572 printk(KERN_ERR "hda-codec: No codec parser is available\n"); 1573 1574 patched: 1575 if (!err && codec->patch_ops.unsol_event) 1576 err = init_unsol_queue(codec->bus); 1577 /* audio codec should override the mixer name */ 1578 if (!err && (codec->afg || !*codec->bus->card->mixername)) 1579 snprintf(codec->bus->card->mixername, 1580 sizeof(codec->bus->card->mixername), 1581 "%s %s", codec->vendor_name, codec->chip_name); 1582 return err; 1583 } 1584 EXPORT_SYMBOL_HDA(snd_hda_codec_configure); 1585 1586 /* update the stream-id if changed */ 1587 static void update_pcm_stream_id(struct hda_codec *codec, 1588 struct hda_cvt_setup *p, hda_nid_t nid, 1589 u32 stream_tag, int channel_id) 1590 { 1591 unsigned int oldval, newval; 1592 1593 if (p->stream_tag != stream_tag || p->channel_id != channel_id) { 1594 oldval = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0); 1595 newval = (stream_tag << 4) | channel_id; 1596 if (oldval != newval) 1597 snd_hda_codec_write(codec, nid, 0, 1598 AC_VERB_SET_CHANNEL_STREAMID, 1599 newval); 1600 p->stream_tag = stream_tag; 1601 p->channel_id = channel_id; 1602 } 1603 } 1604 1605 /* update the format-id if changed */ 1606 static void update_pcm_format(struct hda_codec *codec, struct hda_cvt_setup *p, 1607 hda_nid_t nid, int format) 1608 { 1609 unsigned int oldval; 1610 1611 if (p->format_id != format) { 1612 oldval = snd_hda_codec_read(codec, nid, 0, 1613 AC_VERB_GET_STREAM_FORMAT, 0); 1614 if (oldval != format) { 1615 msleep(1); 1616 snd_hda_codec_write(codec, nid, 0, 1617 AC_VERB_SET_STREAM_FORMAT, 1618 format); 1619 } 1620 p->format_id = format; 1621 } 1622 } 1623 1624 /** 1625 * snd_hda_codec_setup_stream - set up the codec for streaming 1626 * @codec: the CODEC to set up 1627 * @nid: the NID to set up 1628 * @stream_tag: stream tag to pass, it's between 0x1 and 0xf. 1629 * @channel_id: channel id to pass, zero based. 1630 * @format: stream format. 1631 */ 1632 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid, 1633 u32 stream_tag, 1634 int channel_id, int format) 1635 { 1636 struct hda_codec *c; 1637 struct hda_cvt_setup *p; 1638 int type; 1639 int i; 1640 1641 if (!nid) 1642 return; 1643 1644 snd_printdd("hda_codec_setup_stream: " 1645 "NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n", 1646 nid, stream_tag, channel_id, format); 1647 p = get_hda_cvt_setup(codec, nid); 1648 if (!p) 1649 return; 1650 1651 if (codec->pcm_format_first) 1652 update_pcm_format(codec, p, nid, format); 1653 update_pcm_stream_id(codec, p, nid, stream_tag, channel_id); 1654 if (!codec->pcm_format_first) 1655 update_pcm_format(codec, p, nid, format); 1656 1657 p->active = 1; 1658 p->dirty = 0; 1659 1660 /* make other inactive cvts with the same stream-tag dirty */ 1661 type = get_wcaps_type(get_wcaps(codec, nid)); 1662 list_for_each_entry(c, &codec->bus->codec_list, list) { 1663 for (i = 0; i < c->cvt_setups.used; i++) { 1664 p = snd_array_elem(&c->cvt_setups, i); 1665 if (!p->active && p->stream_tag == stream_tag && 1666 get_wcaps_type(get_wcaps(c, p->nid)) == type) 1667 p->dirty = 1; 1668 } 1669 } 1670 } 1671 EXPORT_SYMBOL_HDA(snd_hda_codec_setup_stream); 1672 1673 static void really_cleanup_stream(struct hda_codec *codec, 1674 struct hda_cvt_setup *q); 1675 1676 /** 1677 * __snd_hda_codec_cleanup_stream - clean up the codec for closing 1678 * @codec: the CODEC to clean up 1679 * @nid: the NID to clean up 1680 * @do_now: really clean up the stream instead of clearing the active flag 1681 */ 1682 void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid, 1683 int do_now) 1684 { 1685 struct hda_cvt_setup *p; 1686 1687 if (!nid) 1688 return; 1689 1690 if (codec->no_sticky_stream) 1691 do_now = 1; 1692 1693 snd_printdd("hda_codec_cleanup_stream: NID=0x%x\n", nid); 1694 p = get_hda_cvt_setup(codec, nid); 1695 if (p) { 1696 /* here we just clear the active flag when do_now isn't set; 1697 * actual clean-ups will be done later in 1698 * purify_inactive_streams() called from snd_hda_codec_prpapre() 1699 */ 1700 if (do_now) 1701 really_cleanup_stream(codec, p); 1702 else 1703 p->active = 0; 1704 } 1705 } 1706 EXPORT_SYMBOL_HDA(__snd_hda_codec_cleanup_stream); 1707 1708 static void really_cleanup_stream(struct hda_codec *codec, 1709 struct hda_cvt_setup *q) 1710 { 1711 hda_nid_t nid = q->nid; 1712 if (q->stream_tag || q->channel_id) 1713 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0); 1714 if (q->format_id) 1715 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, 0 1716 ); 1717 memset(q, 0, sizeof(*q)); 1718 q->nid = nid; 1719 } 1720 1721 /* clean up the all conflicting obsolete streams */ 1722 static void purify_inactive_streams(struct hda_codec *codec) 1723 { 1724 struct hda_codec *c; 1725 int i; 1726 1727 list_for_each_entry(c, &codec->bus->codec_list, list) { 1728 for (i = 0; i < c->cvt_setups.used; i++) { 1729 struct hda_cvt_setup *p; 1730 p = snd_array_elem(&c->cvt_setups, i); 1731 if (p->dirty) 1732 really_cleanup_stream(c, p); 1733 } 1734 } 1735 } 1736 1737 #ifdef CONFIG_PM 1738 /* clean up all streams; called from suspend */ 1739 static void hda_cleanup_all_streams(struct hda_codec *codec) 1740 { 1741 int i; 1742 1743 for (i = 0; i < codec->cvt_setups.used; i++) { 1744 struct hda_cvt_setup *p = snd_array_elem(&codec->cvt_setups, i); 1745 if (p->stream_tag) 1746 really_cleanup_stream(codec, p); 1747 } 1748 } 1749 #endif 1750 1751 /* 1752 * amp access functions 1753 */ 1754 1755 /* FIXME: more better hash key? */ 1756 #define HDA_HASH_KEY(nid, dir, idx) (u32)((nid) + ((idx) << 16) + ((dir) << 24)) 1757 #define HDA_HASH_PINCAP_KEY(nid) (u32)((nid) + (0x02 << 24)) 1758 #define HDA_HASH_PARPCM_KEY(nid) (u32)((nid) + (0x03 << 24)) 1759 #define HDA_HASH_PARSTR_KEY(nid) (u32)((nid) + (0x04 << 24)) 1760 #define INFO_AMP_CAPS (1<<0) 1761 #define INFO_AMP_VOL(ch) (1 << (1 + (ch))) 1762 1763 /* initialize the hash table */ 1764 static void init_hda_cache(struct hda_cache_rec *cache, 1765 unsigned int record_size) 1766 { 1767 memset(cache, 0, sizeof(*cache)); 1768 memset(cache->hash, 0xff, sizeof(cache->hash)); 1769 snd_array_init(&cache->buf, record_size, 64); 1770 } 1771 1772 static void free_hda_cache(struct hda_cache_rec *cache) 1773 { 1774 snd_array_free(&cache->buf); 1775 } 1776 1777 /* query the hash. allocate an entry if not found. */ 1778 static struct hda_cache_head *get_hash(struct hda_cache_rec *cache, u32 key) 1779 { 1780 u16 idx = key % (u16)ARRAY_SIZE(cache->hash); 1781 u16 cur = cache->hash[idx]; 1782 struct hda_cache_head *info; 1783 1784 while (cur != 0xffff) { 1785 info = snd_array_elem(&cache->buf, cur); 1786 if (info->key == key) 1787 return info; 1788 cur = info->next; 1789 } 1790 return NULL; 1791 } 1792 1793 /* query the hash. allocate an entry if not found. */ 1794 static struct hda_cache_head *get_alloc_hash(struct hda_cache_rec *cache, 1795 u32 key) 1796 { 1797 struct hda_cache_head *info = get_hash(cache, key); 1798 if (!info) { 1799 u16 idx, cur; 1800 /* add a new hash entry */ 1801 info = snd_array_new(&cache->buf); 1802 if (!info) 1803 return NULL; 1804 cur = snd_array_index(&cache->buf, info); 1805 info->key = key; 1806 info->val = 0; 1807 info->dirty = 0; 1808 idx = key % (u16)ARRAY_SIZE(cache->hash); 1809 info->next = cache->hash[idx]; 1810 cache->hash[idx] = cur; 1811 } 1812 return info; 1813 } 1814 1815 /* query and allocate an amp hash entry */ 1816 static inline struct hda_amp_info * 1817 get_alloc_amp_hash(struct hda_codec *codec, u32 key) 1818 { 1819 return (struct hda_amp_info *)get_alloc_hash(&codec->amp_cache, key); 1820 } 1821 1822 /* overwrite the value with the key in the caps hash */ 1823 static int write_caps_hash(struct hda_codec *codec, u32 key, unsigned int val) 1824 { 1825 struct hda_amp_info *info; 1826 1827 mutex_lock(&codec->hash_mutex); 1828 info = get_alloc_amp_hash(codec, key); 1829 if (!info) { 1830 mutex_unlock(&codec->hash_mutex); 1831 return -EINVAL; 1832 } 1833 info->amp_caps = val; 1834 info->head.val |= INFO_AMP_CAPS; 1835 mutex_unlock(&codec->hash_mutex); 1836 return 0; 1837 } 1838 1839 /* query the value from the caps hash; if not found, fetch the current 1840 * value from the given function and store in the hash 1841 */ 1842 static unsigned int 1843 query_caps_hash(struct hda_codec *codec, hda_nid_t nid, int dir, u32 key, 1844 unsigned int (*func)(struct hda_codec *, hda_nid_t, int)) 1845 { 1846 struct hda_amp_info *info; 1847 unsigned int val; 1848 1849 mutex_lock(&codec->hash_mutex); 1850 info = get_alloc_amp_hash(codec, key); 1851 if (!info) { 1852 mutex_unlock(&codec->hash_mutex); 1853 return 0; 1854 } 1855 if (!(info->head.val & INFO_AMP_CAPS)) { 1856 mutex_unlock(&codec->hash_mutex); /* for reentrance */ 1857 val = func(codec, nid, dir); 1858 write_caps_hash(codec, key, val); 1859 } else { 1860 val = info->amp_caps; 1861 mutex_unlock(&codec->hash_mutex); 1862 } 1863 return val; 1864 } 1865 1866 static unsigned int read_amp_cap(struct hda_codec *codec, hda_nid_t nid, 1867 int direction) 1868 { 1869 if (!(get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD)) 1870 nid = codec->afg; 1871 return snd_hda_param_read(codec, nid, 1872 direction == HDA_OUTPUT ? 1873 AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP); 1874 } 1875 1876 /** 1877 * query_amp_caps - query AMP capabilities 1878 * @codec: the HD-auio codec 1879 * @nid: the NID to query 1880 * @direction: either #HDA_INPUT or #HDA_OUTPUT 1881 * 1882 * Query AMP capabilities for the given widget and direction. 1883 * Returns the obtained capability bits. 1884 * 1885 * When cap bits have been already read, this doesn't read again but 1886 * returns the cached value. 1887 */ 1888 u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction) 1889 { 1890 return query_caps_hash(codec, nid, direction, 1891 HDA_HASH_KEY(nid, direction, 0), 1892 read_amp_cap); 1893 } 1894 EXPORT_SYMBOL_HDA(query_amp_caps); 1895 1896 /** 1897 * snd_hda_override_amp_caps - Override the AMP capabilities 1898 * @codec: the CODEC to clean up 1899 * @nid: the NID to clean up 1900 * @direction: either #HDA_INPUT or #HDA_OUTPUT 1901 * @caps: the capability bits to set 1902 * 1903 * Override the cached AMP caps bits value by the given one. 1904 * This function is useful if the driver needs to adjust the AMP ranges, 1905 * e.g. limit to 0dB, etc. 1906 * 1907 * Returns zero if successful or a negative error code. 1908 */ 1909 int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir, 1910 unsigned int caps) 1911 { 1912 return write_caps_hash(codec, HDA_HASH_KEY(nid, dir, 0), caps); 1913 } 1914 EXPORT_SYMBOL_HDA(snd_hda_override_amp_caps); 1915 1916 static unsigned int read_pin_cap(struct hda_codec *codec, hda_nid_t nid, 1917 int dir) 1918 { 1919 return snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP); 1920 } 1921 1922 /** 1923 * snd_hda_query_pin_caps - Query PIN capabilities 1924 * @codec: the HD-auio codec 1925 * @nid: the NID to query 1926 * 1927 * Query PIN capabilities for the given widget. 1928 * Returns the obtained capability bits. 1929 * 1930 * When cap bits have been already read, this doesn't read again but 1931 * returns the cached value. 1932 */ 1933 u32 snd_hda_query_pin_caps(struct hda_codec *codec, hda_nid_t nid) 1934 { 1935 return query_caps_hash(codec, nid, 0, HDA_HASH_PINCAP_KEY(nid), 1936 read_pin_cap); 1937 } 1938 EXPORT_SYMBOL_HDA(snd_hda_query_pin_caps); 1939 1940 /** 1941 * snd_hda_override_pin_caps - Override the pin capabilities 1942 * @codec: the CODEC 1943 * @nid: the NID to override 1944 * @caps: the capability bits to set 1945 * 1946 * Override the cached PIN capabilitiy bits value by the given one. 1947 * 1948 * Returns zero if successful or a negative error code. 1949 */ 1950 int snd_hda_override_pin_caps(struct hda_codec *codec, hda_nid_t nid, 1951 unsigned int caps) 1952 { 1953 return write_caps_hash(codec, HDA_HASH_PINCAP_KEY(nid), caps); 1954 } 1955 EXPORT_SYMBOL_HDA(snd_hda_override_pin_caps); 1956 1957 /* read or sync the hash value with the current value; 1958 * call within hash_mutex 1959 */ 1960 static struct hda_amp_info * 1961 update_amp_hash(struct hda_codec *codec, hda_nid_t nid, int ch, 1962 int direction, int index, bool init_only) 1963 { 1964 struct hda_amp_info *info; 1965 unsigned int parm, val = 0; 1966 bool val_read = false; 1967 1968 retry: 1969 info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, index)); 1970 if (!info) 1971 return NULL; 1972 if (!(info->head.val & INFO_AMP_VOL(ch))) { 1973 if (!val_read) { 1974 mutex_unlock(&codec->hash_mutex); 1975 parm = ch ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT; 1976 parm |= direction == HDA_OUTPUT ? 1977 AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT; 1978 parm |= index; 1979 val = snd_hda_codec_read(codec, nid, 0, 1980 AC_VERB_GET_AMP_GAIN_MUTE, parm); 1981 val &= 0xff; 1982 val_read = true; 1983 mutex_lock(&codec->hash_mutex); 1984 goto retry; 1985 } 1986 info->vol[ch] = val; 1987 info->head.val |= INFO_AMP_VOL(ch); 1988 } else if (init_only) 1989 return NULL; 1990 return info; 1991 } 1992 1993 /* 1994 * write the current volume in info to the h/w 1995 */ 1996 static void put_vol_mute(struct hda_codec *codec, unsigned int amp_caps, 1997 hda_nid_t nid, int ch, int direction, int index, 1998 int val) 1999 { 2000 u32 parm; 2001 2002 parm = ch ? AC_AMP_SET_RIGHT : AC_AMP_SET_LEFT; 2003 parm |= direction == HDA_OUTPUT ? AC_AMP_SET_OUTPUT : AC_AMP_SET_INPUT; 2004 parm |= index << AC_AMP_SET_INDEX_SHIFT; 2005 if ((val & HDA_AMP_MUTE) && !(amp_caps & AC_AMPCAP_MUTE) && 2006 (amp_caps & AC_AMPCAP_MIN_MUTE)) 2007 ; /* set the zero value as a fake mute */ 2008 else 2009 parm |= val; 2010 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, parm); 2011 } 2012 2013 /** 2014 * snd_hda_codec_amp_read - Read AMP value 2015 * @codec: HD-audio codec 2016 * @nid: NID to read the AMP value 2017 * @ch: channel (left=0 or right=1) 2018 * @direction: #HDA_INPUT or #HDA_OUTPUT 2019 * @index: the index value (only for input direction) 2020 * 2021 * Read AMP value. The volume is between 0 to 0x7f, 0x80 = mute bit. 2022 */ 2023 int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch, 2024 int direction, int index) 2025 { 2026 struct hda_amp_info *info; 2027 unsigned int val = 0; 2028 2029 mutex_lock(&codec->hash_mutex); 2030 info = update_amp_hash(codec, nid, ch, direction, index, false); 2031 if (info) 2032 val = info->vol[ch]; 2033 mutex_unlock(&codec->hash_mutex); 2034 return val; 2035 } 2036 EXPORT_SYMBOL_HDA(snd_hda_codec_amp_read); 2037 2038 static int codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, 2039 int direction, int idx, int mask, int val, 2040 bool init_only) 2041 { 2042 struct hda_amp_info *info; 2043 unsigned int caps; 2044 unsigned int cache_only; 2045 2046 if (snd_BUG_ON(mask & ~0xff)) 2047 mask &= 0xff; 2048 val &= mask; 2049 2050 mutex_lock(&codec->hash_mutex); 2051 info = update_amp_hash(codec, nid, ch, direction, idx, init_only); 2052 if (!info) { 2053 mutex_unlock(&codec->hash_mutex); 2054 return 0; 2055 } 2056 val |= info->vol[ch] & ~mask; 2057 if (info->vol[ch] == val) { 2058 mutex_unlock(&codec->hash_mutex); 2059 return 0; 2060 } 2061 info->vol[ch] = val; 2062 cache_only = info->head.dirty = codec->cached_write; 2063 caps = info->amp_caps; 2064 mutex_unlock(&codec->hash_mutex); 2065 if (!cache_only) 2066 put_vol_mute(codec, caps, nid, ch, direction, idx, val); 2067 return 1; 2068 } 2069 2070 /** 2071 * snd_hda_codec_amp_update - update the AMP value 2072 * @codec: HD-audio codec 2073 * @nid: NID to read the AMP value 2074 * @ch: channel (left=0 or right=1) 2075 * @direction: #HDA_INPUT or #HDA_OUTPUT 2076 * @idx: the index value (only for input direction) 2077 * @mask: bit mask to set 2078 * @val: the bits value to set 2079 * 2080 * Update the AMP value with a bit mask. 2081 * Returns 0 if the value is unchanged, 1 if changed. 2082 */ 2083 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, 2084 int direction, int idx, int mask, int val) 2085 { 2086 return codec_amp_update(codec, nid, ch, direction, idx, mask, val, false); 2087 } 2088 EXPORT_SYMBOL_HDA(snd_hda_codec_amp_update); 2089 2090 /** 2091 * snd_hda_codec_amp_stereo - update the AMP stereo values 2092 * @codec: HD-audio codec 2093 * @nid: NID to read the AMP value 2094 * @direction: #HDA_INPUT or #HDA_OUTPUT 2095 * @idx: the index value (only for input direction) 2096 * @mask: bit mask to set 2097 * @val: the bits value to set 2098 * 2099 * Update the AMP values like snd_hda_codec_amp_update(), but for a 2100 * stereo widget with the same mask and value. 2101 */ 2102 int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid, 2103 int direction, int idx, int mask, int val) 2104 { 2105 int ch, ret = 0; 2106 2107 if (snd_BUG_ON(mask & ~0xff)) 2108 mask &= 0xff; 2109 for (ch = 0; ch < 2; ch++) 2110 ret |= snd_hda_codec_amp_update(codec, nid, ch, direction, 2111 idx, mask, val); 2112 return ret; 2113 } 2114 EXPORT_SYMBOL_HDA(snd_hda_codec_amp_stereo); 2115 2116 /* Works like snd_hda_codec_amp_update() but it writes the value only at 2117 * the first access. If the amp was already initialized / updated beforehand, 2118 * this does nothing. 2119 */ 2120 int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch, 2121 int dir, int idx, int mask, int val) 2122 { 2123 return codec_amp_update(codec, nid, ch, dir, idx, mask, val, true); 2124 } 2125 EXPORT_SYMBOL_HDA(snd_hda_codec_amp_init); 2126 2127 int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid, 2128 int dir, int idx, int mask, int val) 2129 { 2130 int ch, ret = 0; 2131 2132 if (snd_BUG_ON(mask & ~0xff)) 2133 mask &= 0xff; 2134 for (ch = 0; ch < 2; ch++) 2135 ret |= snd_hda_codec_amp_init(codec, nid, ch, dir, 2136 idx, mask, val); 2137 return ret; 2138 } 2139 EXPORT_SYMBOL_HDA(snd_hda_codec_amp_init_stereo); 2140 2141 /** 2142 * snd_hda_codec_resume_amp - Resume all AMP commands from the cache 2143 * @codec: HD-audio codec 2144 * 2145 * Resume the all amp commands from the cache. 2146 */ 2147 void snd_hda_codec_resume_amp(struct hda_codec *codec) 2148 { 2149 int i; 2150 2151 mutex_lock(&codec->hash_mutex); 2152 codec->cached_write = 0; 2153 for (i = 0; i < codec->amp_cache.buf.used; i++) { 2154 struct hda_amp_info *buffer; 2155 u32 key; 2156 hda_nid_t nid; 2157 unsigned int idx, dir, ch; 2158 struct hda_amp_info info; 2159 2160 buffer = snd_array_elem(&codec->amp_cache.buf, i); 2161 if (!buffer->head.dirty) 2162 continue; 2163 buffer->head.dirty = 0; 2164 info = *buffer; 2165 key = info.head.key; 2166 if (!key) 2167 continue; 2168 nid = key & 0xff; 2169 idx = (key >> 16) & 0xff; 2170 dir = (key >> 24) & 0xff; 2171 for (ch = 0; ch < 2; ch++) { 2172 if (!(info.head.val & INFO_AMP_VOL(ch))) 2173 continue; 2174 mutex_unlock(&codec->hash_mutex); 2175 put_vol_mute(codec, info.amp_caps, nid, ch, dir, idx, 2176 info.vol[ch]); 2177 mutex_lock(&codec->hash_mutex); 2178 } 2179 } 2180 mutex_unlock(&codec->hash_mutex); 2181 } 2182 EXPORT_SYMBOL_HDA(snd_hda_codec_resume_amp); 2183 2184 static u32 get_amp_max_value(struct hda_codec *codec, hda_nid_t nid, int dir, 2185 unsigned int ofs) 2186 { 2187 u32 caps = query_amp_caps(codec, nid, dir); 2188 /* get num steps */ 2189 caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT; 2190 if (ofs < caps) 2191 caps -= ofs; 2192 return caps; 2193 } 2194 2195 /** 2196 * snd_hda_mixer_amp_volume_info - Info callback for a standard AMP mixer 2197 * 2198 * The control element is supposed to have the private_value field 2199 * set up via HDA_COMPOSE_AMP_VAL*() or related macros. 2200 */ 2201 int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol, 2202 struct snd_ctl_elem_info *uinfo) 2203 { 2204 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 2205 u16 nid = get_amp_nid(kcontrol); 2206 u8 chs = get_amp_channels(kcontrol); 2207 int dir = get_amp_direction(kcontrol); 2208 unsigned int ofs = get_amp_offset(kcontrol); 2209 2210 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 2211 uinfo->count = chs == 3 ? 2 : 1; 2212 uinfo->value.integer.min = 0; 2213 uinfo->value.integer.max = get_amp_max_value(codec, nid, dir, ofs); 2214 if (!uinfo->value.integer.max) { 2215 printk(KERN_WARNING "hda_codec: " 2216 "num_steps = 0 for NID=0x%x (ctl = %s)\n", nid, 2217 kcontrol->id.name); 2218 return -EINVAL; 2219 } 2220 return 0; 2221 } 2222 EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_volume_info); 2223 2224 2225 static inline unsigned int 2226 read_amp_value(struct hda_codec *codec, hda_nid_t nid, 2227 int ch, int dir, int idx, unsigned int ofs) 2228 { 2229 unsigned int val; 2230 val = snd_hda_codec_amp_read(codec, nid, ch, dir, idx); 2231 val &= HDA_AMP_VOLMASK; 2232 if (val >= ofs) 2233 val -= ofs; 2234 else 2235 val = 0; 2236 return val; 2237 } 2238 2239 static inline int 2240 update_amp_value(struct hda_codec *codec, hda_nid_t nid, 2241 int ch, int dir, int idx, unsigned int ofs, 2242 unsigned int val) 2243 { 2244 unsigned int maxval; 2245 2246 if (val > 0) 2247 val += ofs; 2248 /* ofs = 0: raw max value */ 2249 maxval = get_amp_max_value(codec, nid, dir, 0); 2250 if (val > maxval) 2251 val = maxval; 2252 return snd_hda_codec_amp_update(codec, nid, ch, dir, idx, 2253 HDA_AMP_VOLMASK, val); 2254 } 2255 2256 /** 2257 * snd_hda_mixer_amp_volume_get - Get callback for a standard AMP mixer volume 2258 * 2259 * The control element is supposed to have the private_value field 2260 * set up via HDA_COMPOSE_AMP_VAL*() or related macros. 2261 */ 2262 int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol, 2263 struct snd_ctl_elem_value *ucontrol) 2264 { 2265 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 2266 hda_nid_t nid = get_amp_nid(kcontrol); 2267 int chs = get_amp_channels(kcontrol); 2268 int dir = get_amp_direction(kcontrol); 2269 int idx = get_amp_index(kcontrol); 2270 unsigned int ofs = get_amp_offset(kcontrol); 2271 long *valp = ucontrol->value.integer.value; 2272 2273 if (chs & 1) 2274 *valp++ = read_amp_value(codec, nid, 0, dir, idx, ofs); 2275 if (chs & 2) 2276 *valp = read_amp_value(codec, nid, 1, dir, idx, ofs); 2277 return 0; 2278 } 2279 EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_volume_get); 2280 2281 /** 2282 * snd_hda_mixer_amp_volume_put - Put callback for a standard AMP mixer volume 2283 * 2284 * The control element is supposed to have the private_value field 2285 * set up via HDA_COMPOSE_AMP_VAL*() or related macros. 2286 */ 2287 int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol, 2288 struct snd_ctl_elem_value *ucontrol) 2289 { 2290 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 2291 hda_nid_t nid = get_amp_nid(kcontrol); 2292 int chs = get_amp_channels(kcontrol); 2293 int dir = get_amp_direction(kcontrol); 2294 int idx = get_amp_index(kcontrol); 2295 unsigned int ofs = get_amp_offset(kcontrol); 2296 long *valp = ucontrol->value.integer.value; 2297 int change = 0; 2298 2299 snd_hda_power_up(codec); 2300 if (chs & 1) { 2301 change = update_amp_value(codec, nid, 0, dir, idx, ofs, *valp); 2302 valp++; 2303 } 2304 if (chs & 2) 2305 change |= update_amp_value(codec, nid, 1, dir, idx, ofs, *valp); 2306 snd_hda_power_down(codec); 2307 return change; 2308 } 2309 EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_volume_put); 2310 2311 /** 2312 * snd_hda_mixer_amp_volume_put - TLV callback for a standard AMP mixer volume 2313 * 2314 * The control element is supposed to have the private_value field 2315 * set up via HDA_COMPOSE_AMP_VAL*() or related macros. 2316 */ 2317 int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag, 2318 unsigned int size, unsigned int __user *_tlv) 2319 { 2320 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 2321 hda_nid_t nid = get_amp_nid(kcontrol); 2322 int dir = get_amp_direction(kcontrol); 2323 unsigned int ofs = get_amp_offset(kcontrol); 2324 bool min_mute = get_amp_min_mute(kcontrol); 2325 u32 caps, val1, val2; 2326 2327 if (size < 4 * sizeof(unsigned int)) 2328 return -ENOMEM; 2329 caps = query_amp_caps(codec, nid, dir); 2330 val2 = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT; 2331 val2 = (val2 + 1) * 25; 2332 val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT); 2333 val1 += ofs; 2334 val1 = ((int)val1) * ((int)val2); 2335 if (min_mute || (caps & AC_AMPCAP_MIN_MUTE)) 2336 val2 |= TLV_DB_SCALE_MUTE; 2337 if (put_user(SNDRV_CTL_TLVT_DB_SCALE, _tlv)) 2338 return -EFAULT; 2339 if (put_user(2 * sizeof(unsigned int), _tlv + 1)) 2340 return -EFAULT; 2341 if (put_user(val1, _tlv + 2)) 2342 return -EFAULT; 2343 if (put_user(val2, _tlv + 3)) 2344 return -EFAULT; 2345 return 0; 2346 } 2347 EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_tlv); 2348 2349 /** 2350 * snd_hda_set_vmaster_tlv - Set TLV for a virtual master control 2351 * @codec: HD-audio codec 2352 * @nid: NID of a reference widget 2353 * @dir: #HDA_INPUT or #HDA_OUTPUT 2354 * @tlv: TLV data to be stored, at least 4 elements 2355 * 2356 * Set (static) TLV data for a virtual master volume using the AMP caps 2357 * obtained from the reference NID. 2358 * The volume range is recalculated as if the max volume is 0dB. 2359 */ 2360 void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir, 2361 unsigned int *tlv) 2362 { 2363 u32 caps; 2364 int nums, step; 2365 2366 caps = query_amp_caps(codec, nid, dir); 2367 nums = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT; 2368 step = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT; 2369 step = (step + 1) * 25; 2370 tlv[0] = SNDRV_CTL_TLVT_DB_SCALE; 2371 tlv[1] = 2 * sizeof(unsigned int); 2372 tlv[2] = -nums * step; 2373 tlv[3] = step; 2374 } 2375 EXPORT_SYMBOL_HDA(snd_hda_set_vmaster_tlv); 2376 2377 /* find a mixer control element with the given name */ 2378 static struct snd_kcontrol * 2379 find_mixer_ctl(struct hda_codec *codec, const char *name, int dev, int idx) 2380 { 2381 struct snd_ctl_elem_id id; 2382 memset(&id, 0, sizeof(id)); 2383 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; 2384 id.device = dev; 2385 id.index = idx; 2386 if (snd_BUG_ON(strlen(name) >= sizeof(id.name))) 2387 return NULL; 2388 strcpy(id.name, name); 2389 return snd_ctl_find_id(codec->bus->card, &id); 2390 } 2391 2392 /** 2393 * snd_hda_find_mixer_ctl - Find a mixer control element with the given name 2394 * @codec: HD-audio codec 2395 * @name: ctl id name string 2396 * 2397 * Get the control element with the given id string and IFACE_MIXER. 2398 */ 2399 struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec, 2400 const char *name) 2401 { 2402 return find_mixer_ctl(codec, name, 0, 0); 2403 } 2404 EXPORT_SYMBOL_HDA(snd_hda_find_mixer_ctl); 2405 2406 static int find_empty_mixer_ctl_idx(struct hda_codec *codec, const char *name, 2407 int start_idx) 2408 { 2409 int i, idx; 2410 /* 16 ctlrs should be large enough */ 2411 for (i = 0, idx = start_idx; i < 16; i++, idx++) { 2412 if (!find_mixer_ctl(codec, name, 0, idx)) 2413 return idx; 2414 } 2415 return -EBUSY; 2416 } 2417 2418 /** 2419 * snd_hda_ctl_add - Add a control element and assign to the codec 2420 * @codec: HD-audio codec 2421 * @nid: corresponding NID (optional) 2422 * @kctl: the control element to assign 2423 * 2424 * Add the given control element to an array inside the codec instance. 2425 * All control elements belonging to a codec are supposed to be added 2426 * by this function so that a proper clean-up works at the free or 2427 * reconfiguration time. 2428 * 2429 * If non-zero @nid is passed, the NID is assigned to the control element. 2430 * The assignment is shown in the codec proc file. 2431 * 2432 * snd_hda_ctl_add() checks the control subdev id field whether 2433 * #HDA_SUBDEV_NID_FLAG bit is set. If set (and @nid is zero), the lower 2434 * bits value is taken as the NID to assign. The #HDA_NID_ITEM_AMP bit 2435 * specifies if kctl->private_value is a HDA amplifier value. 2436 */ 2437 int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid, 2438 struct snd_kcontrol *kctl) 2439 { 2440 int err; 2441 unsigned short flags = 0; 2442 struct hda_nid_item *item; 2443 2444 if (kctl->id.subdevice & HDA_SUBDEV_AMP_FLAG) { 2445 flags |= HDA_NID_ITEM_AMP; 2446 if (nid == 0) 2447 nid = get_amp_nid_(kctl->private_value); 2448 } 2449 if ((kctl->id.subdevice & HDA_SUBDEV_NID_FLAG) != 0 && nid == 0) 2450 nid = kctl->id.subdevice & 0xffff; 2451 if (kctl->id.subdevice & (HDA_SUBDEV_NID_FLAG|HDA_SUBDEV_AMP_FLAG)) 2452 kctl->id.subdevice = 0; 2453 err = snd_ctl_add(codec->bus->card, kctl); 2454 if (err < 0) 2455 return err; 2456 item = snd_array_new(&codec->mixers); 2457 if (!item) 2458 return -ENOMEM; 2459 item->kctl = kctl; 2460 item->nid = nid; 2461 item->flags = flags; 2462 return 0; 2463 } 2464 EXPORT_SYMBOL_HDA(snd_hda_ctl_add); 2465 2466 /** 2467 * snd_hda_add_nid - Assign a NID to a control element 2468 * @codec: HD-audio codec 2469 * @nid: corresponding NID (optional) 2470 * @kctl: the control element to assign 2471 * @index: index to kctl 2472 * 2473 * Add the given control element to an array inside the codec instance. 2474 * This function is used when #snd_hda_ctl_add cannot be used for 1:1 2475 * NID:KCTL mapping - for example "Capture Source" selector. 2476 */ 2477 int snd_hda_add_nid(struct hda_codec *codec, struct snd_kcontrol *kctl, 2478 unsigned int index, hda_nid_t nid) 2479 { 2480 struct hda_nid_item *item; 2481 2482 if (nid > 0) { 2483 item = snd_array_new(&codec->nids); 2484 if (!item) 2485 return -ENOMEM; 2486 item->kctl = kctl; 2487 item->index = index; 2488 item->nid = nid; 2489 return 0; 2490 } 2491 printk(KERN_ERR "hda-codec: no NID for mapping control %s:%d:%d\n", 2492 kctl->id.name, kctl->id.index, index); 2493 return -EINVAL; 2494 } 2495 EXPORT_SYMBOL_HDA(snd_hda_add_nid); 2496 2497 /** 2498 * snd_hda_ctls_clear - Clear all controls assigned to the given codec 2499 * @codec: HD-audio codec 2500 */ 2501 void snd_hda_ctls_clear(struct hda_codec *codec) 2502 { 2503 int i; 2504 struct hda_nid_item *items = codec->mixers.list; 2505 for (i = 0; i < codec->mixers.used; i++) 2506 snd_ctl_remove(codec->bus->card, items[i].kctl); 2507 snd_array_free(&codec->mixers); 2508 snd_array_free(&codec->nids); 2509 } 2510 2511 /* pseudo device locking 2512 * toggle card->shutdown to allow/disallow the device access (as a hack) 2513 */ 2514 int snd_hda_lock_devices(struct hda_bus *bus) 2515 { 2516 struct snd_card *card = bus->card; 2517 struct hda_codec *codec; 2518 2519 spin_lock(&card->files_lock); 2520 if (card->shutdown) 2521 goto err_unlock; 2522 card->shutdown = 1; 2523 if (!list_empty(&card->ctl_files)) 2524 goto err_clear; 2525 2526 list_for_each_entry(codec, &bus->codec_list, list) { 2527 int pcm; 2528 for (pcm = 0; pcm < codec->num_pcms; pcm++) { 2529 struct hda_pcm *cpcm = &codec->pcm_info[pcm]; 2530 if (!cpcm->pcm) 2531 continue; 2532 if (cpcm->pcm->streams[0].substream_opened || 2533 cpcm->pcm->streams[1].substream_opened) 2534 goto err_clear; 2535 } 2536 } 2537 spin_unlock(&card->files_lock); 2538 return 0; 2539 2540 err_clear: 2541 card->shutdown = 0; 2542 err_unlock: 2543 spin_unlock(&card->files_lock); 2544 return -EINVAL; 2545 } 2546 EXPORT_SYMBOL_HDA(snd_hda_lock_devices); 2547 2548 void snd_hda_unlock_devices(struct hda_bus *bus) 2549 { 2550 struct snd_card *card = bus->card; 2551 2552 card = bus->card; 2553 spin_lock(&card->files_lock); 2554 card->shutdown = 0; 2555 spin_unlock(&card->files_lock); 2556 } 2557 EXPORT_SYMBOL_HDA(snd_hda_unlock_devices); 2558 2559 /** 2560 * snd_hda_codec_reset - Clear all objects assigned to the codec 2561 * @codec: HD-audio codec 2562 * 2563 * This frees the all PCM and control elements assigned to the codec, and 2564 * clears the caches and restores the pin default configurations. 2565 * 2566 * When a device is being used, it returns -EBSY. If successfully freed, 2567 * returns zero. 2568 */ 2569 int snd_hda_codec_reset(struct hda_codec *codec) 2570 { 2571 struct hda_bus *bus = codec->bus; 2572 struct snd_card *card = bus->card; 2573 int i; 2574 2575 if (snd_hda_lock_devices(bus) < 0) 2576 return -EBUSY; 2577 2578 /* OK, let it free */ 2579 cancel_delayed_work_sync(&codec->jackpoll_work); 2580 #ifdef CONFIG_PM 2581 cancel_delayed_work_sync(&codec->power_work); 2582 codec->power_on = 0; 2583 codec->power_transition = 0; 2584 codec->power_jiffies = jiffies; 2585 flush_workqueue(bus->workq); 2586 #endif 2587 snd_hda_ctls_clear(codec); 2588 /* release PCMs */ 2589 for (i = 0; i < codec->num_pcms; i++) { 2590 if (codec->pcm_info[i].pcm) { 2591 snd_device_free(card, codec->pcm_info[i].pcm); 2592 clear_bit(codec->pcm_info[i].device, 2593 bus->pcm_dev_bits); 2594 } 2595 } 2596 if (codec->patch_ops.free) 2597 codec->patch_ops.free(codec); 2598 memset(&codec->patch_ops, 0, sizeof(codec->patch_ops)); 2599 snd_hda_jack_tbl_clear(codec); 2600 codec->proc_widget_hook = NULL; 2601 codec->spec = NULL; 2602 free_hda_cache(&codec->amp_cache); 2603 free_hda_cache(&codec->cmd_cache); 2604 init_hda_cache(&codec->amp_cache, sizeof(struct hda_amp_info)); 2605 init_hda_cache(&codec->cmd_cache, sizeof(struct hda_cache_head)); 2606 /* free only driver_pins so that init_pins + user_pins are restored */ 2607 snd_array_free(&codec->driver_pins); 2608 snd_array_free(&codec->cvt_setups); 2609 snd_array_free(&codec->spdif_out); 2610 snd_array_free(&codec->verbs); 2611 codec->num_pcms = 0; 2612 codec->pcm_info = NULL; 2613 codec->preset = NULL; 2614 codec->slave_dig_outs = NULL; 2615 codec->spdif_status_reset = 0; 2616 module_put(codec->owner); 2617 codec->owner = NULL; 2618 2619 /* allow device access again */ 2620 snd_hda_unlock_devices(bus); 2621 return 0; 2622 } 2623 2624 typedef int (*map_slave_func_t)(void *, struct snd_kcontrol *); 2625 2626 /* apply the function to all matching slave ctls in the mixer list */ 2627 static int map_slaves(struct hda_codec *codec, const char * const *slaves, 2628 const char *suffix, map_slave_func_t func, void *data) 2629 { 2630 struct hda_nid_item *items; 2631 const char * const *s; 2632 int i, err; 2633 2634 items = codec->mixers.list; 2635 for (i = 0; i < codec->mixers.used; i++) { 2636 struct snd_kcontrol *sctl = items[i].kctl; 2637 if (!sctl || !sctl->id.name || 2638 sctl->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER) 2639 continue; 2640 for (s = slaves; *s; s++) { 2641 char tmpname[sizeof(sctl->id.name)]; 2642 const char *name = *s; 2643 if (suffix) { 2644 snprintf(tmpname, sizeof(tmpname), "%s %s", 2645 name, suffix); 2646 name = tmpname; 2647 } 2648 if (!strcmp(sctl->id.name, name)) { 2649 err = func(data, sctl); 2650 if (err) 2651 return err; 2652 break; 2653 } 2654 } 2655 } 2656 return 0; 2657 } 2658 2659 static int check_slave_present(void *data, struct snd_kcontrol *sctl) 2660 { 2661 return 1; 2662 } 2663 2664 /* guess the value corresponding to 0dB */ 2665 static int get_kctl_0dB_offset(struct snd_kcontrol *kctl) 2666 { 2667 int _tlv[4]; 2668 const int *tlv = NULL; 2669 int val = -1; 2670 2671 if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) { 2672 /* FIXME: set_fs() hack for obtaining user-space TLV data */ 2673 mm_segment_t fs = get_fs(); 2674 set_fs(get_ds()); 2675 if (!kctl->tlv.c(kctl, 0, sizeof(_tlv), _tlv)) 2676 tlv = _tlv; 2677 set_fs(fs); 2678 } else if (kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_TLV_READ) 2679 tlv = kctl->tlv.p; 2680 if (tlv && tlv[0] == SNDRV_CTL_TLVT_DB_SCALE) 2681 val = -tlv[2] / tlv[3]; 2682 return val; 2683 } 2684 2685 /* call kctl->put with the given value(s) */ 2686 static int put_kctl_with_value(struct snd_kcontrol *kctl, int val) 2687 { 2688 struct snd_ctl_elem_value *ucontrol; 2689 ucontrol = kzalloc(sizeof(*ucontrol), GFP_KERNEL); 2690 if (!ucontrol) 2691 return -ENOMEM; 2692 ucontrol->value.integer.value[0] = val; 2693 ucontrol->value.integer.value[1] = val; 2694 kctl->put(kctl, ucontrol); 2695 kfree(ucontrol); 2696 return 0; 2697 } 2698 2699 /* initialize the slave volume with 0dB */ 2700 static int init_slave_0dB(void *data, struct snd_kcontrol *slave) 2701 { 2702 int offset = get_kctl_0dB_offset(slave); 2703 if (offset > 0) 2704 put_kctl_with_value(slave, offset); 2705 return 0; 2706 } 2707 2708 /* unmute the slave */ 2709 static int init_slave_unmute(void *data, struct snd_kcontrol *slave) 2710 { 2711 return put_kctl_with_value(slave, 1); 2712 } 2713 2714 /** 2715 * snd_hda_add_vmaster - create a virtual master control and add slaves 2716 * @codec: HD-audio codec 2717 * @name: vmaster control name 2718 * @tlv: TLV data (optional) 2719 * @slaves: slave control names (optional) 2720 * @suffix: suffix string to each slave name (optional) 2721 * @init_slave_vol: initialize slaves to unmute/0dB 2722 * @ctl_ret: store the vmaster kcontrol in return 2723 * 2724 * Create a virtual master control with the given name. The TLV data 2725 * must be either NULL or a valid data. 2726 * 2727 * @slaves is a NULL-terminated array of strings, each of which is a 2728 * slave control name. All controls with these names are assigned to 2729 * the new virtual master control. 2730 * 2731 * This function returns zero if successful or a negative error code. 2732 */ 2733 int __snd_hda_add_vmaster(struct hda_codec *codec, char *name, 2734 unsigned int *tlv, const char * const *slaves, 2735 const char *suffix, bool init_slave_vol, 2736 struct snd_kcontrol **ctl_ret) 2737 { 2738 struct snd_kcontrol *kctl; 2739 int err; 2740 2741 if (ctl_ret) 2742 *ctl_ret = NULL; 2743 2744 err = map_slaves(codec, slaves, suffix, check_slave_present, NULL); 2745 if (err != 1) { 2746 snd_printdd("No slave found for %s\n", name); 2747 return 0; 2748 } 2749 kctl = snd_ctl_make_virtual_master(name, tlv); 2750 if (!kctl) 2751 return -ENOMEM; 2752 err = snd_hda_ctl_add(codec, 0, kctl); 2753 if (err < 0) 2754 return err; 2755 2756 err = map_slaves(codec, slaves, suffix, 2757 (map_slave_func_t)snd_ctl_add_slave, kctl); 2758 if (err < 0) 2759 return err; 2760 2761 /* init with master mute & zero volume */ 2762 put_kctl_with_value(kctl, 0); 2763 if (init_slave_vol) 2764 map_slaves(codec, slaves, suffix, 2765 tlv ? init_slave_0dB : init_slave_unmute, kctl); 2766 2767 if (ctl_ret) 2768 *ctl_ret = kctl; 2769 return 0; 2770 } 2771 EXPORT_SYMBOL_HDA(__snd_hda_add_vmaster); 2772 2773 /* 2774 * mute-LED control using vmaster 2775 */ 2776 static int vmaster_mute_mode_info(struct snd_kcontrol *kcontrol, 2777 struct snd_ctl_elem_info *uinfo) 2778 { 2779 static const char * const texts[] = { 2780 "On", "Off", "Follow Master" 2781 }; 2782 unsigned int index; 2783 2784 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 2785 uinfo->count = 1; 2786 uinfo->value.enumerated.items = 3; 2787 index = uinfo->value.enumerated.item; 2788 if (index >= 3) 2789 index = 2; 2790 strcpy(uinfo->value.enumerated.name, texts[index]); 2791 return 0; 2792 } 2793 2794 static int vmaster_mute_mode_get(struct snd_kcontrol *kcontrol, 2795 struct snd_ctl_elem_value *ucontrol) 2796 { 2797 struct hda_vmaster_mute_hook *hook = snd_kcontrol_chip(kcontrol); 2798 ucontrol->value.enumerated.item[0] = hook->mute_mode; 2799 return 0; 2800 } 2801 2802 static int vmaster_mute_mode_put(struct snd_kcontrol *kcontrol, 2803 struct snd_ctl_elem_value *ucontrol) 2804 { 2805 struct hda_vmaster_mute_hook *hook = snd_kcontrol_chip(kcontrol); 2806 unsigned int old_mode = hook->mute_mode; 2807 2808 hook->mute_mode = ucontrol->value.enumerated.item[0]; 2809 if (hook->mute_mode > HDA_VMUTE_FOLLOW_MASTER) 2810 hook->mute_mode = HDA_VMUTE_FOLLOW_MASTER; 2811 if (old_mode == hook->mute_mode) 2812 return 0; 2813 snd_hda_sync_vmaster_hook(hook); 2814 return 1; 2815 } 2816 2817 static struct snd_kcontrol_new vmaster_mute_mode = { 2818 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 2819 .name = "Mute-LED Mode", 2820 .info = vmaster_mute_mode_info, 2821 .get = vmaster_mute_mode_get, 2822 .put = vmaster_mute_mode_put, 2823 }; 2824 2825 /* 2826 * Add a mute-LED hook with the given vmaster switch kctl 2827 * "Mute-LED Mode" control is automatically created and associated with 2828 * the given hook. 2829 */ 2830 int snd_hda_add_vmaster_hook(struct hda_codec *codec, 2831 struct hda_vmaster_mute_hook *hook, 2832 bool expose_enum_ctl) 2833 { 2834 struct snd_kcontrol *kctl; 2835 2836 if (!hook->hook || !hook->sw_kctl) 2837 return 0; 2838 snd_ctl_add_vmaster_hook(hook->sw_kctl, hook->hook, codec); 2839 hook->codec = codec; 2840 hook->mute_mode = HDA_VMUTE_FOLLOW_MASTER; 2841 if (!expose_enum_ctl) 2842 return 0; 2843 kctl = snd_ctl_new1(&vmaster_mute_mode, hook); 2844 if (!kctl) 2845 return -ENOMEM; 2846 return snd_hda_ctl_add(codec, 0, kctl); 2847 } 2848 EXPORT_SYMBOL_HDA(snd_hda_add_vmaster_hook); 2849 2850 /* 2851 * Call the hook with the current value for synchronization 2852 * Should be called in init callback 2853 */ 2854 void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook) 2855 { 2856 if (!hook->hook || !hook->codec) 2857 return; 2858 /* don't call vmaster hook in the destructor since it might have 2859 * been already destroyed 2860 */ 2861 if (hook->codec->bus->shutdown) 2862 return; 2863 switch (hook->mute_mode) { 2864 case HDA_VMUTE_FOLLOW_MASTER: 2865 snd_ctl_sync_vmaster_hook(hook->sw_kctl); 2866 break; 2867 default: 2868 hook->hook(hook->codec, hook->mute_mode); 2869 break; 2870 } 2871 } 2872 EXPORT_SYMBOL_HDA(snd_hda_sync_vmaster_hook); 2873 2874 2875 /** 2876 * snd_hda_mixer_amp_switch_info - Info callback for a standard AMP mixer switch 2877 * 2878 * The control element is supposed to have the private_value field 2879 * set up via HDA_COMPOSE_AMP_VAL*() or related macros. 2880 */ 2881 int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol, 2882 struct snd_ctl_elem_info *uinfo) 2883 { 2884 int chs = get_amp_channels(kcontrol); 2885 2886 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 2887 uinfo->count = chs == 3 ? 2 : 1; 2888 uinfo->value.integer.min = 0; 2889 uinfo->value.integer.max = 1; 2890 return 0; 2891 } 2892 EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_info); 2893 2894 /** 2895 * snd_hda_mixer_amp_switch_get - Get callback for a standard AMP mixer switch 2896 * 2897 * The control element is supposed to have the private_value field 2898 * set up via HDA_COMPOSE_AMP_VAL*() or related macros. 2899 */ 2900 int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol, 2901 struct snd_ctl_elem_value *ucontrol) 2902 { 2903 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 2904 hda_nid_t nid = get_amp_nid(kcontrol); 2905 int chs = get_amp_channels(kcontrol); 2906 int dir = get_amp_direction(kcontrol); 2907 int idx = get_amp_index(kcontrol); 2908 long *valp = ucontrol->value.integer.value; 2909 2910 if (chs & 1) 2911 *valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 2912 HDA_AMP_MUTE) ? 0 : 1; 2913 if (chs & 2) 2914 *valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 2915 HDA_AMP_MUTE) ? 0 : 1; 2916 return 0; 2917 } 2918 EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_get); 2919 2920 /** 2921 * snd_hda_mixer_amp_switch_put - Put callback for a standard AMP mixer switch 2922 * 2923 * The control element is supposed to have the private_value field 2924 * set up via HDA_COMPOSE_AMP_VAL*() or related macros. 2925 */ 2926 int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol, 2927 struct snd_ctl_elem_value *ucontrol) 2928 { 2929 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 2930 hda_nid_t nid = get_amp_nid(kcontrol); 2931 int chs = get_amp_channels(kcontrol); 2932 int dir = get_amp_direction(kcontrol); 2933 int idx = get_amp_index(kcontrol); 2934 long *valp = ucontrol->value.integer.value; 2935 int change = 0; 2936 2937 snd_hda_power_up(codec); 2938 if (chs & 1) { 2939 change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx, 2940 HDA_AMP_MUTE, 2941 *valp ? 0 : HDA_AMP_MUTE); 2942 valp++; 2943 } 2944 if (chs & 2) 2945 change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx, 2946 HDA_AMP_MUTE, 2947 *valp ? 0 : HDA_AMP_MUTE); 2948 hda_call_check_power_status(codec, nid); 2949 snd_hda_power_down(codec); 2950 return change; 2951 } 2952 EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_put); 2953 2954 /* 2955 * bound volume controls 2956 * 2957 * bind multiple volumes (# indices, from 0) 2958 */ 2959 2960 #define AMP_VAL_IDX_SHIFT 19 2961 #define AMP_VAL_IDX_MASK (0x0f<<19) 2962 2963 /** 2964 * snd_hda_mixer_bind_switch_get - Get callback for a bound volume control 2965 * 2966 * The control element is supposed to have the private_value field 2967 * set up via HDA_BIND_MUTE*() macros. 2968 */ 2969 int snd_hda_mixer_bind_switch_get(struct snd_kcontrol *kcontrol, 2970 struct snd_ctl_elem_value *ucontrol) 2971 { 2972 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 2973 unsigned long pval; 2974 int err; 2975 2976 mutex_lock(&codec->control_mutex); 2977 pval = kcontrol->private_value; 2978 kcontrol->private_value = pval & ~AMP_VAL_IDX_MASK; /* index 0 */ 2979 err = snd_hda_mixer_amp_switch_get(kcontrol, ucontrol); 2980 kcontrol->private_value = pval; 2981 mutex_unlock(&codec->control_mutex); 2982 return err; 2983 } 2984 EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_switch_get); 2985 2986 /** 2987 * snd_hda_mixer_bind_switch_put - Put callback for a bound volume control 2988 * 2989 * The control element is supposed to have the private_value field 2990 * set up via HDA_BIND_MUTE*() macros. 2991 */ 2992 int snd_hda_mixer_bind_switch_put(struct snd_kcontrol *kcontrol, 2993 struct snd_ctl_elem_value *ucontrol) 2994 { 2995 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 2996 unsigned long pval; 2997 int i, indices, err = 0, change = 0; 2998 2999 mutex_lock(&codec->control_mutex); 3000 pval = kcontrol->private_value; 3001 indices = (pval & AMP_VAL_IDX_MASK) >> AMP_VAL_IDX_SHIFT; 3002 for (i = 0; i < indices; i++) { 3003 kcontrol->private_value = (pval & ~AMP_VAL_IDX_MASK) | 3004 (i << AMP_VAL_IDX_SHIFT); 3005 err = snd_hda_mixer_amp_switch_put(kcontrol, ucontrol); 3006 if (err < 0) 3007 break; 3008 change |= err; 3009 } 3010 kcontrol->private_value = pval; 3011 mutex_unlock(&codec->control_mutex); 3012 return err < 0 ? err : change; 3013 } 3014 EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_switch_put); 3015 3016 /** 3017 * snd_hda_mixer_bind_ctls_info - Info callback for a generic bound control 3018 * 3019 * The control element is supposed to have the private_value field 3020 * set up via HDA_BIND_VOL() or HDA_BIND_SW() macros. 3021 */ 3022 int snd_hda_mixer_bind_ctls_info(struct snd_kcontrol *kcontrol, 3023 struct snd_ctl_elem_info *uinfo) 3024 { 3025 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3026 struct hda_bind_ctls *c; 3027 int err; 3028 3029 mutex_lock(&codec->control_mutex); 3030 c = (struct hda_bind_ctls *)kcontrol->private_value; 3031 kcontrol->private_value = *c->values; 3032 err = c->ops->info(kcontrol, uinfo); 3033 kcontrol->private_value = (long)c; 3034 mutex_unlock(&codec->control_mutex); 3035 return err; 3036 } 3037 EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_ctls_info); 3038 3039 /** 3040 * snd_hda_mixer_bind_ctls_get - Get callback for a generic bound control 3041 * 3042 * The control element is supposed to have the private_value field 3043 * set up via HDA_BIND_VOL() or HDA_BIND_SW() macros. 3044 */ 3045 int snd_hda_mixer_bind_ctls_get(struct snd_kcontrol *kcontrol, 3046 struct snd_ctl_elem_value *ucontrol) 3047 { 3048 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3049 struct hda_bind_ctls *c; 3050 int err; 3051 3052 mutex_lock(&codec->control_mutex); 3053 c = (struct hda_bind_ctls *)kcontrol->private_value; 3054 kcontrol->private_value = *c->values; 3055 err = c->ops->get(kcontrol, ucontrol); 3056 kcontrol->private_value = (long)c; 3057 mutex_unlock(&codec->control_mutex); 3058 return err; 3059 } 3060 EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_ctls_get); 3061 3062 /** 3063 * snd_hda_mixer_bind_ctls_put - Put callback for a generic bound control 3064 * 3065 * The control element is supposed to have the private_value field 3066 * set up via HDA_BIND_VOL() or HDA_BIND_SW() macros. 3067 */ 3068 int snd_hda_mixer_bind_ctls_put(struct snd_kcontrol *kcontrol, 3069 struct snd_ctl_elem_value *ucontrol) 3070 { 3071 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3072 struct hda_bind_ctls *c; 3073 unsigned long *vals; 3074 int err = 0, change = 0; 3075 3076 mutex_lock(&codec->control_mutex); 3077 c = (struct hda_bind_ctls *)kcontrol->private_value; 3078 for (vals = c->values; *vals; vals++) { 3079 kcontrol->private_value = *vals; 3080 err = c->ops->put(kcontrol, ucontrol); 3081 if (err < 0) 3082 break; 3083 change |= err; 3084 } 3085 kcontrol->private_value = (long)c; 3086 mutex_unlock(&codec->control_mutex); 3087 return err < 0 ? err : change; 3088 } 3089 EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_ctls_put); 3090 3091 /** 3092 * snd_hda_mixer_bind_tlv - TLV callback for a generic bound control 3093 * 3094 * The control element is supposed to have the private_value field 3095 * set up via HDA_BIND_VOL() macro. 3096 */ 3097 int snd_hda_mixer_bind_tlv(struct snd_kcontrol *kcontrol, int op_flag, 3098 unsigned int size, unsigned int __user *tlv) 3099 { 3100 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3101 struct hda_bind_ctls *c; 3102 int err; 3103 3104 mutex_lock(&codec->control_mutex); 3105 c = (struct hda_bind_ctls *)kcontrol->private_value; 3106 kcontrol->private_value = *c->values; 3107 err = c->ops->tlv(kcontrol, op_flag, size, tlv); 3108 kcontrol->private_value = (long)c; 3109 mutex_unlock(&codec->control_mutex); 3110 return err; 3111 } 3112 EXPORT_SYMBOL_HDA(snd_hda_mixer_bind_tlv); 3113 3114 struct hda_ctl_ops snd_hda_bind_vol = { 3115 .info = snd_hda_mixer_amp_volume_info, 3116 .get = snd_hda_mixer_amp_volume_get, 3117 .put = snd_hda_mixer_amp_volume_put, 3118 .tlv = snd_hda_mixer_amp_tlv 3119 }; 3120 EXPORT_SYMBOL_HDA(snd_hda_bind_vol); 3121 3122 struct hda_ctl_ops snd_hda_bind_sw = { 3123 .info = snd_hda_mixer_amp_switch_info, 3124 .get = snd_hda_mixer_amp_switch_get, 3125 .put = snd_hda_mixer_amp_switch_put, 3126 .tlv = snd_hda_mixer_amp_tlv 3127 }; 3128 EXPORT_SYMBOL_HDA(snd_hda_bind_sw); 3129 3130 /* 3131 * SPDIF out controls 3132 */ 3133 3134 static int snd_hda_spdif_mask_info(struct snd_kcontrol *kcontrol, 3135 struct snd_ctl_elem_info *uinfo) 3136 { 3137 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 3138 uinfo->count = 1; 3139 return 0; 3140 } 3141 3142 static int snd_hda_spdif_cmask_get(struct snd_kcontrol *kcontrol, 3143 struct snd_ctl_elem_value *ucontrol) 3144 { 3145 ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL | 3146 IEC958_AES0_NONAUDIO | 3147 IEC958_AES0_CON_EMPHASIS_5015 | 3148 IEC958_AES0_CON_NOT_COPYRIGHT; 3149 ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY | 3150 IEC958_AES1_CON_ORIGINAL; 3151 return 0; 3152 } 3153 3154 static int snd_hda_spdif_pmask_get(struct snd_kcontrol *kcontrol, 3155 struct snd_ctl_elem_value *ucontrol) 3156 { 3157 ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL | 3158 IEC958_AES0_NONAUDIO | 3159 IEC958_AES0_PRO_EMPHASIS_5015; 3160 return 0; 3161 } 3162 3163 static int snd_hda_spdif_default_get(struct snd_kcontrol *kcontrol, 3164 struct snd_ctl_elem_value *ucontrol) 3165 { 3166 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3167 int idx = kcontrol->private_value; 3168 struct hda_spdif_out *spdif; 3169 3170 mutex_lock(&codec->spdif_mutex); 3171 spdif = snd_array_elem(&codec->spdif_out, idx); 3172 ucontrol->value.iec958.status[0] = spdif->status & 0xff; 3173 ucontrol->value.iec958.status[1] = (spdif->status >> 8) & 0xff; 3174 ucontrol->value.iec958.status[2] = (spdif->status >> 16) & 0xff; 3175 ucontrol->value.iec958.status[3] = (spdif->status >> 24) & 0xff; 3176 mutex_unlock(&codec->spdif_mutex); 3177 3178 return 0; 3179 } 3180 3181 /* convert from SPDIF status bits to HDA SPDIF bits 3182 * bit 0 (DigEn) is always set zero (to be filled later) 3183 */ 3184 static unsigned short convert_from_spdif_status(unsigned int sbits) 3185 { 3186 unsigned short val = 0; 3187 3188 if (sbits & IEC958_AES0_PROFESSIONAL) 3189 val |= AC_DIG1_PROFESSIONAL; 3190 if (sbits & IEC958_AES0_NONAUDIO) 3191 val |= AC_DIG1_NONAUDIO; 3192 if (sbits & IEC958_AES0_PROFESSIONAL) { 3193 if ((sbits & IEC958_AES0_PRO_EMPHASIS) == 3194 IEC958_AES0_PRO_EMPHASIS_5015) 3195 val |= AC_DIG1_EMPHASIS; 3196 } else { 3197 if ((sbits & IEC958_AES0_CON_EMPHASIS) == 3198 IEC958_AES0_CON_EMPHASIS_5015) 3199 val |= AC_DIG1_EMPHASIS; 3200 if (!(sbits & IEC958_AES0_CON_NOT_COPYRIGHT)) 3201 val |= AC_DIG1_COPYRIGHT; 3202 if (sbits & (IEC958_AES1_CON_ORIGINAL << 8)) 3203 val |= AC_DIG1_LEVEL; 3204 val |= sbits & (IEC958_AES1_CON_CATEGORY << 8); 3205 } 3206 return val; 3207 } 3208 3209 /* convert to SPDIF status bits from HDA SPDIF bits 3210 */ 3211 static unsigned int convert_to_spdif_status(unsigned short val) 3212 { 3213 unsigned int sbits = 0; 3214 3215 if (val & AC_DIG1_NONAUDIO) 3216 sbits |= IEC958_AES0_NONAUDIO; 3217 if (val & AC_DIG1_PROFESSIONAL) 3218 sbits |= IEC958_AES0_PROFESSIONAL; 3219 if (sbits & IEC958_AES0_PROFESSIONAL) { 3220 if (val & AC_DIG1_EMPHASIS) 3221 sbits |= IEC958_AES0_PRO_EMPHASIS_5015; 3222 } else { 3223 if (val & AC_DIG1_EMPHASIS) 3224 sbits |= IEC958_AES0_CON_EMPHASIS_5015; 3225 if (!(val & AC_DIG1_COPYRIGHT)) 3226 sbits |= IEC958_AES0_CON_NOT_COPYRIGHT; 3227 if (val & AC_DIG1_LEVEL) 3228 sbits |= (IEC958_AES1_CON_ORIGINAL << 8); 3229 sbits |= val & (0x7f << 8); 3230 } 3231 return sbits; 3232 } 3233 3234 /* set digital convert verbs both for the given NID and its slaves */ 3235 static void set_dig_out(struct hda_codec *codec, hda_nid_t nid, 3236 int verb, int val) 3237 { 3238 const hda_nid_t *d; 3239 3240 snd_hda_codec_write_cache(codec, nid, 0, verb, val); 3241 d = codec->slave_dig_outs; 3242 if (!d) 3243 return; 3244 for (; *d; d++) 3245 snd_hda_codec_write_cache(codec, *d, 0, verb, val); 3246 } 3247 3248 static inline void set_dig_out_convert(struct hda_codec *codec, hda_nid_t nid, 3249 int dig1, int dig2) 3250 { 3251 if (dig1 != -1) 3252 set_dig_out(codec, nid, AC_VERB_SET_DIGI_CONVERT_1, dig1); 3253 if (dig2 != -1) 3254 set_dig_out(codec, nid, AC_VERB_SET_DIGI_CONVERT_2, dig2); 3255 } 3256 3257 static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol, 3258 struct snd_ctl_elem_value *ucontrol) 3259 { 3260 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3261 int idx = kcontrol->private_value; 3262 struct hda_spdif_out *spdif; 3263 hda_nid_t nid; 3264 unsigned short val; 3265 int change; 3266 3267 mutex_lock(&codec->spdif_mutex); 3268 spdif = snd_array_elem(&codec->spdif_out, idx); 3269 nid = spdif->nid; 3270 spdif->status = ucontrol->value.iec958.status[0] | 3271 ((unsigned int)ucontrol->value.iec958.status[1] << 8) | 3272 ((unsigned int)ucontrol->value.iec958.status[2] << 16) | 3273 ((unsigned int)ucontrol->value.iec958.status[3] << 24); 3274 val = convert_from_spdif_status(spdif->status); 3275 val |= spdif->ctls & 1; 3276 change = spdif->ctls != val; 3277 spdif->ctls = val; 3278 if (change && nid != (u16)-1) 3279 set_dig_out_convert(codec, nid, val & 0xff, (val >> 8) & 0xff); 3280 mutex_unlock(&codec->spdif_mutex); 3281 return change; 3282 } 3283 3284 #define snd_hda_spdif_out_switch_info snd_ctl_boolean_mono_info 3285 3286 static int snd_hda_spdif_out_switch_get(struct snd_kcontrol *kcontrol, 3287 struct snd_ctl_elem_value *ucontrol) 3288 { 3289 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3290 int idx = kcontrol->private_value; 3291 struct hda_spdif_out *spdif; 3292 3293 mutex_lock(&codec->spdif_mutex); 3294 spdif = snd_array_elem(&codec->spdif_out, idx); 3295 ucontrol->value.integer.value[0] = spdif->ctls & AC_DIG1_ENABLE; 3296 mutex_unlock(&codec->spdif_mutex); 3297 return 0; 3298 } 3299 3300 static inline void set_spdif_ctls(struct hda_codec *codec, hda_nid_t nid, 3301 int dig1, int dig2) 3302 { 3303 set_dig_out_convert(codec, nid, dig1, dig2); 3304 /* unmute amp switch (if any) */ 3305 if ((get_wcaps(codec, nid) & AC_WCAP_OUT_AMP) && 3306 (dig1 & AC_DIG1_ENABLE)) 3307 snd_hda_codec_amp_stereo(codec, nid, HDA_OUTPUT, 0, 3308 HDA_AMP_MUTE, 0); 3309 } 3310 3311 static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol, 3312 struct snd_ctl_elem_value *ucontrol) 3313 { 3314 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3315 int idx = kcontrol->private_value; 3316 struct hda_spdif_out *spdif; 3317 hda_nid_t nid; 3318 unsigned short val; 3319 int change; 3320 3321 mutex_lock(&codec->spdif_mutex); 3322 spdif = snd_array_elem(&codec->spdif_out, idx); 3323 nid = spdif->nid; 3324 val = spdif->ctls & ~AC_DIG1_ENABLE; 3325 if (ucontrol->value.integer.value[0]) 3326 val |= AC_DIG1_ENABLE; 3327 change = spdif->ctls != val; 3328 spdif->ctls = val; 3329 if (change && nid != (u16)-1) 3330 set_spdif_ctls(codec, nid, val & 0xff, -1); 3331 mutex_unlock(&codec->spdif_mutex); 3332 return change; 3333 } 3334 3335 static struct snd_kcontrol_new dig_mixes[] = { 3336 { 3337 .access = SNDRV_CTL_ELEM_ACCESS_READ, 3338 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 3339 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK), 3340 .info = snd_hda_spdif_mask_info, 3341 .get = snd_hda_spdif_cmask_get, 3342 }, 3343 { 3344 .access = SNDRV_CTL_ELEM_ACCESS_READ, 3345 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 3346 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK), 3347 .info = snd_hda_spdif_mask_info, 3348 .get = snd_hda_spdif_pmask_get, 3349 }, 3350 { 3351 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 3352 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), 3353 .info = snd_hda_spdif_mask_info, 3354 .get = snd_hda_spdif_default_get, 3355 .put = snd_hda_spdif_default_put, 3356 }, 3357 { 3358 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 3359 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH), 3360 .info = snd_hda_spdif_out_switch_info, 3361 .get = snd_hda_spdif_out_switch_get, 3362 .put = snd_hda_spdif_out_switch_put, 3363 }, 3364 { } /* end */ 3365 }; 3366 3367 /** 3368 * snd_hda_create_dig_out_ctls - create Output SPDIF-related controls 3369 * @codec: the HDA codec 3370 * @associated_nid: NID that new ctls associated with 3371 * @cvt_nid: converter NID 3372 * @type: HDA_PCM_TYPE_* 3373 * Creates controls related with the digital output. 3374 * Called from each patch supporting the digital out. 3375 * 3376 * Returns 0 if successful, or a negative error code. 3377 */ 3378 int snd_hda_create_dig_out_ctls(struct hda_codec *codec, 3379 hda_nid_t associated_nid, 3380 hda_nid_t cvt_nid, 3381 int type) 3382 { 3383 int err; 3384 struct snd_kcontrol *kctl; 3385 struct snd_kcontrol_new *dig_mix; 3386 int idx = 0; 3387 const int spdif_index = 16; 3388 struct hda_spdif_out *spdif; 3389 struct hda_bus *bus = codec->bus; 3390 3391 if (bus->primary_dig_out_type == HDA_PCM_TYPE_HDMI && 3392 type == HDA_PCM_TYPE_SPDIF) { 3393 idx = spdif_index; 3394 } else if (bus->primary_dig_out_type == HDA_PCM_TYPE_SPDIF && 3395 type == HDA_PCM_TYPE_HDMI) { 3396 /* suppose a single SPDIF device */ 3397 for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) { 3398 kctl = find_mixer_ctl(codec, dig_mix->name, 0, 0); 3399 if (!kctl) 3400 break; 3401 kctl->id.index = spdif_index; 3402 } 3403 bus->primary_dig_out_type = HDA_PCM_TYPE_HDMI; 3404 } 3405 if (!bus->primary_dig_out_type) 3406 bus->primary_dig_out_type = type; 3407 3408 idx = find_empty_mixer_ctl_idx(codec, "IEC958 Playback Switch", idx); 3409 if (idx < 0) { 3410 printk(KERN_ERR "hda_codec: too many IEC958 outputs\n"); 3411 return -EBUSY; 3412 } 3413 spdif = snd_array_new(&codec->spdif_out); 3414 if (!spdif) 3415 return -ENOMEM; 3416 for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) { 3417 kctl = snd_ctl_new1(dig_mix, codec); 3418 if (!kctl) 3419 return -ENOMEM; 3420 kctl->id.index = idx; 3421 kctl->private_value = codec->spdif_out.used - 1; 3422 err = snd_hda_ctl_add(codec, associated_nid, kctl); 3423 if (err < 0) 3424 return err; 3425 } 3426 spdif->nid = cvt_nid; 3427 spdif->ctls = snd_hda_codec_read(codec, cvt_nid, 0, 3428 AC_VERB_GET_DIGI_CONVERT_1, 0); 3429 spdif->status = convert_to_spdif_status(spdif->ctls); 3430 return 0; 3431 } 3432 EXPORT_SYMBOL_HDA(snd_hda_create_dig_out_ctls); 3433 3434 /* get the hda_spdif_out entry from the given NID 3435 * call within spdif_mutex lock 3436 */ 3437 struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec, 3438 hda_nid_t nid) 3439 { 3440 int i; 3441 for (i = 0; i < codec->spdif_out.used; i++) { 3442 struct hda_spdif_out *spdif = 3443 snd_array_elem(&codec->spdif_out, i); 3444 if (spdif->nid == nid) 3445 return spdif; 3446 } 3447 return NULL; 3448 } 3449 EXPORT_SYMBOL_HDA(snd_hda_spdif_out_of_nid); 3450 3451 void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx) 3452 { 3453 struct hda_spdif_out *spdif; 3454 3455 mutex_lock(&codec->spdif_mutex); 3456 spdif = snd_array_elem(&codec->spdif_out, idx); 3457 spdif->nid = (u16)-1; 3458 mutex_unlock(&codec->spdif_mutex); 3459 } 3460 EXPORT_SYMBOL_HDA(snd_hda_spdif_ctls_unassign); 3461 3462 void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid) 3463 { 3464 struct hda_spdif_out *spdif; 3465 unsigned short val; 3466 3467 mutex_lock(&codec->spdif_mutex); 3468 spdif = snd_array_elem(&codec->spdif_out, idx); 3469 if (spdif->nid != nid) { 3470 spdif->nid = nid; 3471 val = spdif->ctls; 3472 set_spdif_ctls(codec, nid, val & 0xff, (val >> 8) & 0xff); 3473 } 3474 mutex_unlock(&codec->spdif_mutex); 3475 } 3476 EXPORT_SYMBOL_HDA(snd_hda_spdif_ctls_assign); 3477 3478 /* 3479 * SPDIF sharing with analog output 3480 */ 3481 static int spdif_share_sw_get(struct snd_kcontrol *kcontrol, 3482 struct snd_ctl_elem_value *ucontrol) 3483 { 3484 struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol); 3485 ucontrol->value.integer.value[0] = mout->share_spdif; 3486 return 0; 3487 } 3488 3489 static int spdif_share_sw_put(struct snd_kcontrol *kcontrol, 3490 struct snd_ctl_elem_value *ucontrol) 3491 { 3492 struct hda_multi_out *mout = snd_kcontrol_chip(kcontrol); 3493 mout->share_spdif = !!ucontrol->value.integer.value[0]; 3494 return 0; 3495 } 3496 3497 static struct snd_kcontrol_new spdif_share_sw = { 3498 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 3499 .name = "IEC958 Default PCM Playback Switch", 3500 .info = snd_ctl_boolean_mono_info, 3501 .get = spdif_share_sw_get, 3502 .put = spdif_share_sw_put, 3503 }; 3504 3505 /** 3506 * snd_hda_create_spdif_share_sw - create Default PCM switch 3507 * @codec: the HDA codec 3508 * @mout: multi-out instance 3509 */ 3510 int snd_hda_create_spdif_share_sw(struct hda_codec *codec, 3511 struct hda_multi_out *mout) 3512 { 3513 struct snd_kcontrol *kctl; 3514 3515 if (!mout->dig_out_nid) 3516 return 0; 3517 3518 kctl = snd_ctl_new1(&spdif_share_sw, mout); 3519 if (!kctl) 3520 return -ENOMEM; 3521 /* ATTENTION: here mout is passed as private_data, instead of codec */ 3522 return snd_hda_ctl_add(codec, mout->dig_out_nid, kctl); 3523 } 3524 EXPORT_SYMBOL_HDA(snd_hda_create_spdif_share_sw); 3525 3526 /* 3527 * SPDIF input 3528 */ 3529 3530 #define snd_hda_spdif_in_switch_info snd_hda_spdif_out_switch_info 3531 3532 static int snd_hda_spdif_in_switch_get(struct snd_kcontrol *kcontrol, 3533 struct snd_ctl_elem_value *ucontrol) 3534 { 3535 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3536 3537 ucontrol->value.integer.value[0] = codec->spdif_in_enable; 3538 return 0; 3539 } 3540 3541 static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol, 3542 struct snd_ctl_elem_value *ucontrol) 3543 { 3544 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3545 hda_nid_t nid = kcontrol->private_value; 3546 unsigned int val = !!ucontrol->value.integer.value[0]; 3547 int change; 3548 3549 mutex_lock(&codec->spdif_mutex); 3550 change = codec->spdif_in_enable != val; 3551 if (change) { 3552 codec->spdif_in_enable = val; 3553 snd_hda_codec_write_cache(codec, nid, 0, 3554 AC_VERB_SET_DIGI_CONVERT_1, val); 3555 } 3556 mutex_unlock(&codec->spdif_mutex); 3557 return change; 3558 } 3559 3560 static int snd_hda_spdif_in_status_get(struct snd_kcontrol *kcontrol, 3561 struct snd_ctl_elem_value *ucontrol) 3562 { 3563 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 3564 hda_nid_t nid = kcontrol->private_value; 3565 unsigned short val; 3566 unsigned int sbits; 3567 3568 val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT_1, 0); 3569 sbits = convert_to_spdif_status(val); 3570 ucontrol->value.iec958.status[0] = sbits; 3571 ucontrol->value.iec958.status[1] = sbits >> 8; 3572 ucontrol->value.iec958.status[2] = sbits >> 16; 3573 ucontrol->value.iec958.status[3] = sbits >> 24; 3574 return 0; 3575 } 3576 3577 static struct snd_kcontrol_new dig_in_ctls[] = { 3578 { 3579 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 3580 .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, SWITCH), 3581 .info = snd_hda_spdif_in_switch_info, 3582 .get = snd_hda_spdif_in_switch_get, 3583 .put = snd_hda_spdif_in_switch_put, 3584 }, 3585 { 3586 .access = SNDRV_CTL_ELEM_ACCESS_READ, 3587 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 3588 .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT), 3589 .info = snd_hda_spdif_mask_info, 3590 .get = snd_hda_spdif_in_status_get, 3591 }, 3592 { } /* end */ 3593 }; 3594 3595 /** 3596 * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls 3597 * @codec: the HDA codec 3598 * @nid: audio in widget NID 3599 * 3600 * Creates controls related with the SPDIF input. 3601 * Called from each patch supporting the SPDIF in. 3602 * 3603 * Returns 0 if successful, or a negative error code. 3604 */ 3605 int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid) 3606 { 3607 int err; 3608 struct snd_kcontrol *kctl; 3609 struct snd_kcontrol_new *dig_mix; 3610 int idx; 3611 3612 idx = find_empty_mixer_ctl_idx(codec, "IEC958 Capture Switch", 0); 3613 if (idx < 0) { 3614 printk(KERN_ERR "hda_codec: too many IEC958 inputs\n"); 3615 return -EBUSY; 3616 } 3617 for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) { 3618 kctl = snd_ctl_new1(dig_mix, codec); 3619 if (!kctl) 3620 return -ENOMEM; 3621 kctl->private_value = nid; 3622 err = snd_hda_ctl_add(codec, nid, kctl); 3623 if (err < 0) 3624 return err; 3625 } 3626 codec->spdif_in_enable = 3627 snd_hda_codec_read(codec, nid, 0, 3628 AC_VERB_GET_DIGI_CONVERT_1, 0) & 3629 AC_DIG1_ENABLE; 3630 return 0; 3631 } 3632 EXPORT_SYMBOL_HDA(snd_hda_create_spdif_in_ctls); 3633 3634 /* 3635 * command cache 3636 */ 3637 3638 /* build a 31bit cache key with the widget id and the command parameter */ 3639 #define build_cmd_cache_key(nid, verb) ((verb << 8) | nid) 3640 #define get_cmd_cache_nid(key) ((key) & 0xff) 3641 #define get_cmd_cache_cmd(key) (((key) >> 8) & 0xffff) 3642 3643 /** 3644 * snd_hda_codec_write_cache - send a single command with caching 3645 * @codec: the HDA codec 3646 * @nid: NID to send the command 3647 * @flags: optional bit flags 3648 * @verb: the verb to send 3649 * @parm: the parameter for the verb 3650 * 3651 * Send a single command without waiting for response. 3652 * 3653 * Returns 0 if successful, or a negative error code. 3654 */ 3655 int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid, 3656 int flags, unsigned int verb, unsigned int parm) 3657 { 3658 int err; 3659 struct hda_cache_head *c; 3660 u32 key; 3661 unsigned int cache_only; 3662 3663 cache_only = codec->cached_write; 3664 if (!cache_only) { 3665 err = snd_hda_codec_write(codec, nid, flags, verb, parm); 3666 if (err < 0) 3667 return err; 3668 } 3669 3670 /* parm may contain the verb stuff for get/set amp */ 3671 verb = verb | (parm >> 8); 3672 parm &= 0xff; 3673 key = build_cmd_cache_key(nid, verb); 3674 mutex_lock(&codec->bus->cmd_mutex); 3675 c = get_alloc_hash(&codec->cmd_cache, key); 3676 if (c) { 3677 c->val = parm; 3678 c->dirty = cache_only; 3679 } 3680 mutex_unlock(&codec->bus->cmd_mutex); 3681 return 0; 3682 } 3683 EXPORT_SYMBOL_HDA(snd_hda_codec_write_cache); 3684 3685 /** 3686 * snd_hda_codec_update_cache - check cache and write the cmd only when needed 3687 * @codec: the HDA codec 3688 * @nid: NID to send the command 3689 * @flags: optional bit flags 3690 * @verb: the verb to send 3691 * @parm: the parameter for the verb 3692 * 3693 * This function works like snd_hda_codec_write_cache(), but it doesn't send 3694 * command if the parameter is already identical with the cached value. 3695 * If not, it sends the command and refreshes the cache. 3696 * 3697 * Returns 0 if successful, or a negative error code. 3698 */ 3699 int snd_hda_codec_update_cache(struct hda_codec *codec, hda_nid_t nid, 3700 int flags, unsigned int verb, unsigned int parm) 3701 { 3702 struct hda_cache_head *c; 3703 u32 key; 3704 3705 /* parm may contain the verb stuff for get/set amp */ 3706 verb = verb | (parm >> 8); 3707 parm &= 0xff; 3708 key = build_cmd_cache_key(nid, verb); 3709 mutex_lock(&codec->bus->cmd_mutex); 3710 c = get_hash(&codec->cmd_cache, key); 3711 if (c && c->val == parm) { 3712 mutex_unlock(&codec->bus->cmd_mutex); 3713 return 0; 3714 } 3715 mutex_unlock(&codec->bus->cmd_mutex); 3716 return snd_hda_codec_write_cache(codec, nid, flags, verb, parm); 3717 } 3718 EXPORT_SYMBOL_HDA(snd_hda_codec_update_cache); 3719 3720 /** 3721 * snd_hda_codec_resume_cache - Resume the all commands from the cache 3722 * @codec: HD-audio codec 3723 * 3724 * Execute all verbs recorded in the command caches to resume. 3725 */ 3726 void snd_hda_codec_resume_cache(struct hda_codec *codec) 3727 { 3728 int i; 3729 3730 mutex_lock(&codec->hash_mutex); 3731 codec->cached_write = 0; 3732 for (i = 0; i < codec->cmd_cache.buf.used; i++) { 3733 struct hda_cache_head *buffer; 3734 u32 key; 3735 3736 buffer = snd_array_elem(&codec->cmd_cache.buf, i); 3737 key = buffer->key; 3738 if (!key) 3739 continue; 3740 if (!buffer->dirty) 3741 continue; 3742 buffer->dirty = 0; 3743 mutex_unlock(&codec->hash_mutex); 3744 snd_hda_codec_write(codec, get_cmd_cache_nid(key), 0, 3745 get_cmd_cache_cmd(key), buffer->val); 3746 mutex_lock(&codec->hash_mutex); 3747 } 3748 mutex_unlock(&codec->hash_mutex); 3749 } 3750 EXPORT_SYMBOL_HDA(snd_hda_codec_resume_cache); 3751 3752 /** 3753 * snd_hda_sequence_write_cache - sequence writes with caching 3754 * @codec: the HDA codec 3755 * @seq: VERB array to send 3756 * 3757 * Send the commands sequentially from the given array. 3758 * Thte commands are recorded on cache for power-save and resume. 3759 * The array must be terminated with NID=0. 3760 */ 3761 void snd_hda_sequence_write_cache(struct hda_codec *codec, 3762 const struct hda_verb *seq) 3763 { 3764 for (; seq->nid; seq++) 3765 snd_hda_codec_write_cache(codec, seq->nid, 0, seq->verb, 3766 seq->param); 3767 } 3768 EXPORT_SYMBOL_HDA(snd_hda_sequence_write_cache); 3769 3770 /** 3771 * snd_hda_codec_flush_cache - Execute all pending (cached) amps / verbs 3772 * @codec: HD-audio codec 3773 */ 3774 void snd_hda_codec_flush_cache(struct hda_codec *codec) 3775 { 3776 snd_hda_codec_resume_amp(codec); 3777 snd_hda_codec_resume_cache(codec); 3778 } 3779 EXPORT_SYMBOL_HDA(snd_hda_codec_flush_cache); 3780 3781 void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg, 3782 unsigned int power_state) 3783 { 3784 hda_nid_t nid = codec->start_nid; 3785 int i; 3786 3787 for (i = 0; i < codec->num_nodes; i++, nid++) { 3788 unsigned int wcaps = get_wcaps(codec, nid); 3789 unsigned int state = power_state; 3790 if (!(wcaps & AC_WCAP_POWER)) 3791 continue; 3792 if (codec->power_filter) { 3793 state = codec->power_filter(codec, nid, power_state); 3794 if (state != power_state && power_state == AC_PWRST_D3) 3795 continue; 3796 } 3797 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE, 3798 state); 3799 } 3800 } 3801 EXPORT_SYMBOL_HDA(snd_hda_codec_set_power_to_all); 3802 3803 /* 3804 * supported power states check 3805 */ 3806 static bool snd_hda_codec_get_supported_ps(struct hda_codec *codec, hda_nid_t fg, 3807 unsigned int power_state) 3808 { 3809 int sup = snd_hda_param_read(codec, fg, AC_PAR_POWER_STATE); 3810 3811 if (sup == -1) 3812 return false; 3813 if (sup & power_state) 3814 return true; 3815 else 3816 return false; 3817 } 3818 3819 /* 3820 * wait until the state is reached, returns the current state 3821 */ 3822 static unsigned int hda_sync_power_state(struct hda_codec *codec, 3823 hda_nid_t fg, 3824 unsigned int power_state) 3825 { 3826 unsigned long end_time = jiffies + msecs_to_jiffies(500); 3827 unsigned int state, actual_state; 3828 3829 for (;;) { 3830 state = snd_hda_codec_read(codec, fg, 0, 3831 AC_VERB_GET_POWER_STATE, 0); 3832 if (state & AC_PWRST_ERROR) 3833 break; 3834 actual_state = (state >> 4) & 0x0f; 3835 if (actual_state == power_state) 3836 break; 3837 if (time_after_eq(jiffies, end_time)) 3838 break; 3839 /* wait until the codec reachs to the target state */ 3840 msleep(1); 3841 } 3842 return state; 3843 } 3844 3845 /* don't power down the widget if it controls eapd and EAPD_BTLENABLE is set */ 3846 unsigned int snd_hda_codec_eapd_power_filter(struct hda_codec *codec, 3847 hda_nid_t nid, 3848 unsigned int power_state) 3849 { 3850 if (power_state == AC_PWRST_D3 && 3851 get_wcaps_type(get_wcaps(codec, nid)) == AC_WID_PIN && 3852 (snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_EAPD)) { 3853 int eapd = snd_hda_codec_read(codec, nid, 0, 3854 AC_VERB_GET_EAPD_BTLENABLE, 0); 3855 if (eapd & 0x02) 3856 return AC_PWRST_D0; 3857 } 3858 return power_state; 3859 } 3860 EXPORT_SYMBOL_HDA(snd_hda_codec_eapd_power_filter); 3861 3862 /* 3863 * set power state of the codec, and return the power state 3864 */ 3865 static unsigned int hda_set_power_state(struct hda_codec *codec, 3866 unsigned int power_state) 3867 { 3868 hda_nid_t fg = codec->afg ? codec->afg : codec->mfg; 3869 int count; 3870 unsigned int state; 3871 int flags = 0; 3872 3873 /* this delay seems necessary to avoid click noise at power-down */ 3874 if (power_state == AC_PWRST_D3) { 3875 /* transition time less than 10ms for power down */ 3876 msleep(codec->epss ? 10 : 100); 3877 flags = HDA_RW_NO_RESPONSE_FALLBACK; 3878 } 3879 3880 /* repeat power states setting at most 10 times*/ 3881 for (count = 0; count < 10; count++) { 3882 if (codec->patch_ops.set_power_state) 3883 codec->patch_ops.set_power_state(codec, fg, 3884 power_state); 3885 else { 3886 snd_hda_codec_read(codec, fg, flags, 3887 AC_VERB_SET_POWER_STATE, 3888 power_state); 3889 snd_hda_codec_set_power_to_all(codec, fg, power_state); 3890 } 3891 state = hda_sync_power_state(codec, fg, power_state); 3892 if (!(state & AC_PWRST_ERROR)) 3893 break; 3894 } 3895 3896 return state; 3897 } 3898 3899 /* sync power states of all widgets; 3900 * this is called at the end of codec parsing 3901 */ 3902 static void sync_power_up_states(struct hda_codec *codec) 3903 { 3904 hda_nid_t nid = codec->start_nid; 3905 int i; 3906 3907 /* don't care if no filter is used */ 3908 if (!codec->power_filter) 3909 return; 3910 3911 for (i = 0; i < codec->num_nodes; i++, nid++) { 3912 unsigned int wcaps = get_wcaps(codec, nid); 3913 unsigned int target; 3914 if (!(wcaps & AC_WCAP_POWER)) 3915 continue; 3916 target = codec->power_filter(codec, nid, AC_PWRST_D0); 3917 if (target == AC_PWRST_D0) 3918 continue; 3919 if (!snd_hda_check_power_state(codec, nid, target)) 3920 snd_hda_codec_write(codec, nid, 0, 3921 AC_VERB_SET_POWER_STATE, target); 3922 } 3923 } 3924 3925 #ifdef CONFIG_SND_HDA_HWDEP 3926 /* execute additional init verbs */ 3927 static void hda_exec_init_verbs(struct hda_codec *codec) 3928 { 3929 if (codec->init_verbs.list) 3930 snd_hda_sequence_write(codec, codec->init_verbs.list); 3931 } 3932 #else 3933 static inline void hda_exec_init_verbs(struct hda_codec *codec) {} 3934 #endif 3935 3936 #ifdef CONFIG_PM 3937 /* 3938 * call suspend and power-down; used both from PM and power-save 3939 * this function returns the power state in the end 3940 */ 3941 static unsigned int hda_call_codec_suspend(struct hda_codec *codec, bool in_wq) 3942 { 3943 unsigned int state; 3944 3945 codec->in_pm = 1; 3946 3947 if (codec->patch_ops.suspend) 3948 codec->patch_ops.suspend(codec); 3949 hda_cleanup_all_streams(codec); 3950 state = hda_set_power_state(codec, AC_PWRST_D3); 3951 /* Cancel delayed work if we aren't currently running from it. */ 3952 if (!in_wq) 3953 cancel_delayed_work_sync(&codec->power_work); 3954 spin_lock(&codec->power_lock); 3955 snd_hda_update_power_acct(codec); 3956 trace_hda_power_down(codec); 3957 codec->power_on = 0; 3958 codec->power_transition = 0; 3959 codec->power_jiffies = jiffies; 3960 spin_unlock(&codec->power_lock); 3961 codec->in_pm = 0; 3962 return state; 3963 } 3964 3965 /* mark all entries of cmd and amp caches dirty */ 3966 static void hda_mark_cmd_cache_dirty(struct hda_codec *codec) 3967 { 3968 int i; 3969 for (i = 0; i < codec->cmd_cache.buf.used; i++) { 3970 struct hda_cache_head *cmd; 3971 cmd = snd_array_elem(&codec->cmd_cache.buf, i); 3972 cmd->dirty = 1; 3973 } 3974 for (i = 0; i < codec->amp_cache.buf.used; i++) { 3975 struct hda_amp_info *amp; 3976 amp = snd_array_elem(&codec->amp_cache.buf, i); 3977 amp->head.dirty = 1; 3978 } 3979 } 3980 3981 /* 3982 * kick up codec; used both from PM and power-save 3983 */ 3984 static void hda_call_codec_resume(struct hda_codec *codec) 3985 { 3986 codec->in_pm = 1; 3987 3988 hda_mark_cmd_cache_dirty(codec); 3989 3990 /* set as if powered on for avoiding re-entering the resume 3991 * in the resume / power-save sequence 3992 */ 3993 hda_keep_power_on(codec); 3994 hda_set_power_state(codec, AC_PWRST_D0); 3995 restore_shutup_pins(codec); 3996 hda_exec_init_verbs(codec); 3997 snd_hda_jack_set_dirty_all(codec); 3998 if (codec->patch_ops.resume) 3999 codec->patch_ops.resume(codec); 4000 else { 4001 if (codec->patch_ops.init) 4002 codec->patch_ops.init(codec); 4003 snd_hda_codec_resume_amp(codec); 4004 snd_hda_codec_resume_cache(codec); 4005 } 4006 4007 if (codec->jackpoll_interval) 4008 hda_jackpoll_work(&codec->jackpoll_work.work); 4009 else 4010 snd_hda_jack_report_sync(codec); 4011 4012 codec->in_pm = 0; 4013 snd_hda_power_down(codec); /* flag down before returning */ 4014 } 4015 #endif /* CONFIG_PM */ 4016 4017 4018 /** 4019 * snd_hda_build_controls - build mixer controls 4020 * @bus: the BUS 4021 * 4022 * Creates mixer controls for each codec included in the bus. 4023 * 4024 * Returns 0 if successful, otherwise a negative error code. 4025 */ 4026 int snd_hda_build_controls(struct hda_bus *bus) 4027 { 4028 struct hda_codec *codec; 4029 4030 list_for_each_entry(codec, &bus->codec_list, list) { 4031 int err = snd_hda_codec_build_controls(codec); 4032 if (err < 0) { 4033 printk(KERN_ERR "hda_codec: cannot build controls " 4034 "for #%d (error %d)\n", codec->addr, err); 4035 err = snd_hda_codec_reset(codec); 4036 if (err < 0) { 4037 printk(KERN_ERR 4038 "hda_codec: cannot revert codec\n"); 4039 return err; 4040 } 4041 } 4042 } 4043 return 0; 4044 } 4045 EXPORT_SYMBOL_HDA(snd_hda_build_controls); 4046 4047 /* 4048 * add standard channel maps if not specified 4049 */ 4050 static int add_std_chmaps(struct hda_codec *codec) 4051 { 4052 int i, str, err; 4053 4054 for (i = 0; i < codec->num_pcms; i++) { 4055 for (str = 0; str < 2; str++) { 4056 struct snd_pcm *pcm = codec->pcm_info[i].pcm; 4057 struct hda_pcm_stream *hinfo = 4058 &codec->pcm_info[i].stream[str]; 4059 struct snd_pcm_chmap *chmap; 4060 const struct snd_pcm_chmap_elem *elem; 4061 4062 if (codec->pcm_info[i].own_chmap) 4063 continue; 4064 if (!pcm || !hinfo->substreams) 4065 continue; 4066 elem = hinfo->chmap ? hinfo->chmap : snd_pcm_std_chmaps; 4067 err = snd_pcm_add_chmap_ctls(pcm, str, elem, 4068 hinfo->channels_max, 4069 0, &chmap); 4070 if (err < 0) 4071 return err; 4072 chmap->channel_mask = SND_PCM_CHMAP_MASK_2468; 4073 } 4074 } 4075 return 0; 4076 } 4077 4078 /* default channel maps for 2.1 speakers; 4079 * since HD-audio supports only stereo, odd number channels are omitted 4080 */ 4081 const struct snd_pcm_chmap_elem snd_pcm_2_1_chmaps[] = { 4082 { .channels = 2, 4083 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } }, 4084 { .channels = 4, 4085 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, 4086 SNDRV_CHMAP_LFE, SNDRV_CHMAP_LFE } }, 4087 { } 4088 }; 4089 EXPORT_SYMBOL_GPL(snd_pcm_2_1_chmaps); 4090 4091 int snd_hda_codec_build_controls(struct hda_codec *codec) 4092 { 4093 int err = 0; 4094 hda_exec_init_verbs(codec); 4095 /* continue to initialize... */ 4096 if (codec->patch_ops.init) 4097 err = codec->patch_ops.init(codec); 4098 if (!err && codec->patch_ops.build_controls) 4099 err = codec->patch_ops.build_controls(codec); 4100 if (err < 0) 4101 return err; 4102 4103 /* we create chmaps here instead of build_pcms */ 4104 err = add_std_chmaps(codec); 4105 if (err < 0) 4106 return err; 4107 4108 if (codec->jackpoll_interval) 4109 hda_jackpoll_work(&codec->jackpoll_work.work); 4110 else 4111 snd_hda_jack_report_sync(codec); /* call at the last init point */ 4112 sync_power_up_states(codec); 4113 return 0; 4114 } 4115 4116 /* 4117 * stream formats 4118 */ 4119 struct hda_rate_tbl { 4120 unsigned int hz; 4121 unsigned int alsa_bits; 4122 unsigned int hda_fmt; 4123 }; 4124 4125 /* rate = base * mult / div */ 4126 #define HDA_RATE(base, mult, div) \ 4127 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ 4128 (((div) - 1) << AC_FMT_DIV_SHIFT)) 4129 4130 static struct hda_rate_tbl rate_bits[] = { 4131 /* rate in Hz, ALSA rate bitmask, HDA format value */ 4132 4133 /* autodetected value used in snd_hda_query_supported_pcm */ 4134 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, 4135 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, 4136 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, 4137 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, 4138 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, 4139 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, 4140 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, 4141 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, 4142 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, 4143 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, 4144 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, 4145 #define AC_PAR_PCM_RATE_BITS 11 4146 /* up to bits 10, 384kHZ isn't supported properly */ 4147 4148 /* not autodetected value */ 4149 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, 4150 4151 { 0 } /* terminator */ 4152 }; 4153 4154 /** 4155 * snd_hda_calc_stream_format - calculate format bitset 4156 * @rate: the sample rate 4157 * @channels: the number of channels 4158 * @format: the PCM format (SNDRV_PCM_FORMAT_XXX) 4159 * @maxbps: the max. bps 4160 * 4161 * Calculate the format bitset from the given rate, channels and th PCM format. 4162 * 4163 * Return zero if invalid. 4164 */ 4165 unsigned int snd_hda_calc_stream_format(unsigned int rate, 4166 unsigned int channels, 4167 unsigned int format, 4168 unsigned int maxbps, 4169 unsigned short spdif_ctls) 4170 { 4171 int i; 4172 unsigned int val = 0; 4173 4174 for (i = 0; rate_bits[i].hz; i++) 4175 if (rate_bits[i].hz == rate) { 4176 val = rate_bits[i].hda_fmt; 4177 break; 4178 } 4179 if (!rate_bits[i].hz) { 4180 snd_printdd("invalid rate %d\n", rate); 4181 return 0; 4182 } 4183 4184 if (channels == 0 || channels > 8) { 4185 snd_printdd("invalid channels %d\n", channels); 4186 return 0; 4187 } 4188 val |= channels - 1; 4189 4190 switch (snd_pcm_format_width(format)) { 4191 case 8: 4192 val |= AC_FMT_BITS_8; 4193 break; 4194 case 16: 4195 val |= AC_FMT_BITS_16; 4196 break; 4197 case 20: 4198 case 24: 4199 case 32: 4200 if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE) 4201 val |= AC_FMT_BITS_32; 4202 else if (maxbps >= 24) 4203 val |= AC_FMT_BITS_24; 4204 else 4205 val |= AC_FMT_BITS_20; 4206 break; 4207 default: 4208 snd_printdd("invalid format width %d\n", 4209 snd_pcm_format_width(format)); 4210 return 0; 4211 } 4212 4213 if (spdif_ctls & AC_DIG1_NONAUDIO) 4214 val |= AC_FMT_TYPE_NON_PCM; 4215 4216 return val; 4217 } 4218 EXPORT_SYMBOL_HDA(snd_hda_calc_stream_format); 4219 4220 static unsigned int get_pcm_param(struct hda_codec *codec, hda_nid_t nid, 4221 int dir) 4222 { 4223 unsigned int val = 0; 4224 if (nid != codec->afg && 4225 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) 4226 val = snd_hda_param_read(codec, nid, AC_PAR_PCM); 4227 if (!val || val == -1) 4228 val = snd_hda_param_read(codec, codec->afg, AC_PAR_PCM); 4229 if (!val || val == -1) 4230 return 0; 4231 return val; 4232 } 4233 4234 static unsigned int query_pcm_param(struct hda_codec *codec, hda_nid_t nid) 4235 { 4236 return query_caps_hash(codec, nid, 0, HDA_HASH_PARPCM_KEY(nid), 4237 get_pcm_param); 4238 } 4239 4240 static unsigned int get_stream_param(struct hda_codec *codec, hda_nid_t nid, 4241 int dir) 4242 { 4243 unsigned int streams = snd_hda_param_read(codec, nid, AC_PAR_STREAM); 4244 if (!streams || streams == -1) 4245 streams = snd_hda_param_read(codec, codec->afg, AC_PAR_STREAM); 4246 if (!streams || streams == -1) 4247 return 0; 4248 return streams; 4249 } 4250 4251 static unsigned int query_stream_param(struct hda_codec *codec, hda_nid_t nid) 4252 { 4253 return query_caps_hash(codec, nid, 0, HDA_HASH_PARSTR_KEY(nid), 4254 get_stream_param); 4255 } 4256 4257 /** 4258 * snd_hda_query_supported_pcm - query the supported PCM rates and formats 4259 * @codec: the HDA codec 4260 * @nid: NID to query 4261 * @ratesp: the pointer to store the detected rate bitflags 4262 * @formatsp: the pointer to store the detected formats 4263 * @bpsp: the pointer to store the detected format widths 4264 * 4265 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp 4266 * or @bsps argument is ignored. 4267 * 4268 * Returns 0 if successful, otherwise a negative error code. 4269 */ 4270 int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid, 4271 u32 *ratesp, u64 *formatsp, unsigned int *bpsp) 4272 { 4273 unsigned int i, val, wcaps; 4274 4275 wcaps = get_wcaps(codec, nid); 4276 val = query_pcm_param(codec, nid); 4277 4278 if (ratesp) { 4279 u32 rates = 0; 4280 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { 4281 if (val & (1 << i)) 4282 rates |= rate_bits[i].alsa_bits; 4283 } 4284 if (rates == 0) { 4285 snd_printk(KERN_ERR "hda_codec: rates == 0 " 4286 "(nid=0x%x, val=0x%x, ovrd=%i)\n", 4287 nid, val, 4288 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); 4289 return -EIO; 4290 } 4291 *ratesp = rates; 4292 } 4293 4294 if (formatsp || bpsp) { 4295 u64 formats = 0; 4296 unsigned int streams, bps; 4297 4298 streams = query_stream_param(codec, nid); 4299 if (!streams) 4300 return -EIO; 4301 4302 bps = 0; 4303 if (streams & AC_SUPFMT_PCM) { 4304 if (val & AC_SUPPCM_BITS_8) { 4305 formats |= SNDRV_PCM_FMTBIT_U8; 4306 bps = 8; 4307 } 4308 if (val & AC_SUPPCM_BITS_16) { 4309 formats |= SNDRV_PCM_FMTBIT_S16_LE; 4310 bps = 16; 4311 } 4312 if (wcaps & AC_WCAP_DIGITAL) { 4313 if (val & AC_SUPPCM_BITS_32) 4314 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; 4315 if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24)) 4316 formats |= SNDRV_PCM_FMTBIT_S32_LE; 4317 if (val & AC_SUPPCM_BITS_24) 4318 bps = 24; 4319 else if (val & AC_SUPPCM_BITS_20) 4320 bps = 20; 4321 } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24| 4322 AC_SUPPCM_BITS_32)) { 4323 formats |= SNDRV_PCM_FMTBIT_S32_LE; 4324 if (val & AC_SUPPCM_BITS_32) 4325 bps = 32; 4326 else if (val & AC_SUPPCM_BITS_24) 4327 bps = 24; 4328 else if (val & AC_SUPPCM_BITS_20) 4329 bps = 20; 4330 } 4331 } 4332 #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ 4333 if (streams & AC_SUPFMT_FLOAT32) { 4334 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; 4335 if (!bps) 4336 bps = 32; 4337 } 4338 #endif 4339 if (streams == AC_SUPFMT_AC3) { 4340 /* should be exclusive */ 4341 /* temporary hack: we have still no proper support 4342 * for the direct AC3 stream... 4343 */ 4344 formats |= SNDRV_PCM_FMTBIT_U8; 4345 bps = 8; 4346 } 4347 if (formats == 0) { 4348 snd_printk(KERN_ERR "hda_codec: formats == 0 " 4349 "(nid=0x%x, val=0x%x, ovrd=%i, " 4350 "streams=0x%x)\n", 4351 nid, val, 4352 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, 4353 streams); 4354 return -EIO; 4355 } 4356 if (formatsp) 4357 *formatsp = formats; 4358 if (bpsp) 4359 *bpsp = bps; 4360 } 4361 4362 return 0; 4363 } 4364 EXPORT_SYMBOL_HDA(snd_hda_query_supported_pcm); 4365 4366 /** 4367 * snd_hda_is_supported_format - Check the validity of the format 4368 * @codec: HD-audio codec 4369 * @nid: NID to check 4370 * @format: the HD-audio format value to check 4371 * 4372 * Check whether the given node supports the format value. 4373 * 4374 * Returns 1 if supported, 0 if not. 4375 */ 4376 int snd_hda_is_supported_format(struct hda_codec *codec, hda_nid_t nid, 4377 unsigned int format) 4378 { 4379 int i; 4380 unsigned int val = 0, rate, stream; 4381 4382 val = query_pcm_param(codec, nid); 4383 if (!val) 4384 return 0; 4385 4386 rate = format & 0xff00; 4387 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) 4388 if (rate_bits[i].hda_fmt == rate) { 4389 if (val & (1 << i)) 4390 break; 4391 return 0; 4392 } 4393 if (i >= AC_PAR_PCM_RATE_BITS) 4394 return 0; 4395 4396 stream = query_stream_param(codec, nid); 4397 if (!stream) 4398 return 0; 4399 4400 if (stream & AC_SUPFMT_PCM) { 4401 switch (format & 0xf0) { 4402 case 0x00: 4403 if (!(val & AC_SUPPCM_BITS_8)) 4404 return 0; 4405 break; 4406 case 0x10: 4407 if (!(val & AC_SUPPCM_BITS_16)) 4408 return 0; 4409 break; 4410 case 0x20: 4411 if (!(val & AC_SUPPCM_BITS_20)) 4412 return 0; 4413 break; 4414 case 0x30: 4415 if (!(val & AC_SUPPCM_BITS_24)) 4416 return 0; 4417 break; 4418 case 0x40: 4419 if (!(val & AC_SUPPCM_BITS_32)) 4420 return 0; 4421 break; 4422 default: 4423 return 0; 4424 } 4425 } else { 4426 /* FIXME: check for float32 and AC3? */ 4427 } 4428 4429 return 1; 4430 } 4431 EXPORT_SYMBOL_HDA(snd_hda_is_supported_format); 4432 4433 /* 4434 * PCM stuff 4435 */ 4436 static int hda_pcm_default_open_close(struct hda_pcm_stream *hinfo, 4437 struct hda_codec *codec, 4438 struct snd_pcm_substream *substream) 4439 { 4440 return 0; 4441 } 4442 4443 static int hda_pcm_default_prepare(struct hda_pcm_stream *hinfo, 4444 struct hda_codec *codec, 4445 unsigned int stream_tag, 4446 unsigned int format, 4447 struct snd_pcm_substream *substream) 4448 { 4449 snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format); 4450 return 0; 4451 } 4452 4453 static int hda_pcm_default_cleanup(struct hda_pcm_stream *hinfo, 4454 struct hda_codec *codec, 4455 struct snd_pcm_substream *substream) 4456 { 4457 snd_hda_codec_cleanup_stream(codec, hinfo->nid); 4458 return 0; 4459 } 4460 4461 static int set_pcm_default_values(struct hda_codec *codec, 4462 struct hda_pcm_stream *info) 4463 { 4464 int err; 4465 4466 /* query support PCM information from the given NID */ 4467 if (info->nid && (!info->rates || !info->formats)) { 4468 err = snd_hda_query_supported_pcm(codec, info->nid, 4469 info->rates ? NULL : &info->rates, 4470 info->formats ? NULL : &info->formats, 4471 info->maxbps ? NULL : &info->maxbps); 4472 if (err < 0) 4473 return err; 4474 } 4475 if (info->ops.open == NULL) 4476 info->ops.open = hda_pcm_default_open_close; 4477 if (info->ops.close == NULL) 4478 info->ops.close = hda_pcm_default_open_close; 4479 if (info->ops.prepare == NULL) { 4480 if (snd_BUG_ON(!info->nid)) 4481 return -EINVAL; 4482 info->ops.prepare = hda_pcm_default_prepare; 4483 } 4484 if (info->ops.cleanup == NULL) { 4485 if (snd_BUG_ON(!info->nid)) 4486 return -EINVAL; 4487 info->ops.cleanup = hda_pcm_default_cleanup; 4488 } 4489 return 0; 4490 } 4491 4492 /* 4493 * codec prepare/cleanup entries 4494 */ 4495 int snd_hda_codec_prepare(struct hda_codec *codec, 4496 struct hda_pcm_stream *hinfo, 4497 unsigned int stream, 4498 unsigned int format, 4499 struct snd_pcm_substream *substream) 4500 { 4501 int ret; 4502 mutex_lock(&codec->bus->prepare_mutex); 4503 ret = hinfo->ops.prepare(hinfo, codec, stream, format, substream); 4504 if (ret >= 0) 4505 purify_inactive_streams(codec); 4506 mutex_unlock(&codec->bus->prepare_mutex); 4507 return ret; 4508 } 4509 EXPORT_SYMBOL_HDA(snd_hda_codec_prepare); 4510 4511 void snd_hda_codec_cleanup(struct hda_codec *codec, 4512 struct hda_pcm_stream *hinfo, 4513 struct snd_pcm_substream *substream) 4514 { 4515 mutex_lock(&codec->bus->prepare_mutex); 4516 hinfo->ops.cleanup(hinfo, codec, substream); 4517 mutex_unlock(&codec->bus->prepare_mutex); 4518 } 4519 EXPORT_SYMBOL_HDA(snd_hda_codec_cleanup); 4520 4521 /* global */ 4522 const char *snd_hda_pcm_type_name[HDA_PCM_NTYPES] = { 4523 "Audio", "SPDIF", "HDMI", "Modem" 4524 }; 4525 4526 /* 4527 * get the empty PCM device number to assign 4528 */ 4529 static int get_empty_pcm_device(struct hda_bus *bus, unsigned int type) 4530 { 4531 /* audio device indices; not linear to keep compatibility */ 4532 /* assigned to static slots up to dev#10; if more needed, assign 4533 * the later slot dynamically (when CONFIG_SND_DYNAMIC_MINORS=y) 4534 */ 4535 static int audio_idx[HDA_PCM_NTYPES][5] = { 4536 [HDA_PCM_TYPE_AUDIO] = { 0, 2, 4, 5, -1 }, 4537 [HDA_PCM_TYPE_SPDIF] = { 1, -1 }, 4538 [HDA_PCM_TYPE_HDMI] = { 3, 7, 8, 9, -1 }, 4539 [HDA_PCM_TYPE_MODEM] = { 6, -1 }, 4540 }; 4541 int i; 4542 4543 if (type >= HDA_PCM_NTYPES) { 4544 snd_printk(KERN_WARNING "Invalid PCM type %d\n", type); 4545 return -EINVAL; 4546 } 4547 4548 for (i = 0; audio_idx[type][i] >= 0; i++) { 4549 #ifndef CONFIG_SND_DYNAMIC_MINORS 4550 if (audio_idx[type][i] >= 8) 4551 break; 4552 #endif 4553 if (!test_and_set_bit(audio_idx[type][i], bus->pcm_dev_bits)) 4554 return audio_idx[type][i]; 4555 } 4556 4557 #ifdef CONFIG_SND_DYNAMIC_MINORS 4558 /* non-fixed slots starting from 10 */ 4559 for (i = 10; i < 32; i++) { 4560 if (!test_and_set_bit(i, bus->pcm_dev_bits)) 4561 return i; 4562 } 4563 #endif 4564 4565 snd_printk(KERN_WARNING "Too many %s devices\n", 4566 snd_hda_pcm_type_name[type]); 4567 #ifndef CONFIG_SND_DYNAMIC_MINORS 4568 snd_printk(KERN_WARNING "Consider building the kernel with CONFIG_SND_DYNAMIC_MINORS=y\n"); 4569 #endif 4570 return -EAGAIN; 4571 } 4572 4573 /* 4574 * attach a new PCM stream 4575 */ 4576 static int snd_hda_attach_pcm(struct hda_codec *codec, struct hda_pcm *pcm) 4577 { 4578 struct hda_bus *bus = codec->bus; 4579 struct hda_pcm_stream *info; 4580 int stream, err; 4581 4582 if (snd_BUG_ON(!pcm->name)) 4583 return -EINVAL; 4584 for (stream = 0; stream < 2; stream++) { 4585 info = &pcm->stream[stream]; 4586 if (info->substreams) { 4587 err = set_pcm_default_values(codec, info); 4588 if (err < 0) 4589 return err; 4590 } 4591 } 4592 return bus->ops.attach_pcm(bus, codec, pcm); 4593 } 4594 4595 /* assign all PCMs of the given codec */ 4596 int snd_hda_codec_build_pcms(struct hda_codec *codec) 4597 { 4598 unsigned int pcm; 4599 int err; 4600 4601 if (!codec->num_pcms) { 4602 if (!codec->patch_ops.build_pcms) 4603 return 0; 4604 err = codec->patch_ops.build_pcms(codec); 4605 if (err < 0) { 4606 printk(KERN_ERR "hda_codec: cannot build PCMs" 4607 "for #%d (error %d)\n", codec->addr, err); 4608 err = snd_hda_codec_reset(codec); 4609 if (err < 0) { 4610 printk(KERN_ERR 4611 "hda_codec: cannot revert codec\n"); 4612 return err; 4613 } 4614 } 4615 } 4616 for (pcm = 0; pcm < codec->num_pcms; pcm++) { 4617 struct hda_pcm *cpcm = &codec->pcm_info[pcm]; 4618 int dev; 4619 4620 if (!cpcm->stream[0].substreams && !cpcm->stream[1].substreams) 4621 continue; /* no substreams assigned */ 4622 4623 if (!cpcm->pcm) { 4624 dev = get_empty_pcm_device(codec->bus, cpcm->pcm_type); 4625 if (dev < 0) 4626 continue; /* no fatal error */ 4627 cpcm->device = dev; 4628 err = snd_hda_attach_pcm(codec, cpcm); 4629 if (err < 0) { 4630 printk(KERN_ERR "hda_codec: cannot attach " 4631 "PCM stream %d for codec #%d\n", 4632 dev, codec->addr); 4633 continue; /* no fatal error */ 4634 } 4635 } 4636 } 4637 return 0; 4638 } 4639 4640 /** 4641 * snd_hda_build_pcms - build PCM information 4642 * @bus: the BUS 4643 * 4644 * Create PCM information for each codec included in the bus. 4645 * 4646 * The build_pcms codec patch is requested to set up codec->num_pcms and 4647 * codec->pcm_info properly. The array is referred by the top-level driver 4648 * to create its PCM instances. 4649 * The allocated codec->pcm_info should be released in codec->patch_ops.free 4650 * callback. 4651 * 4652 * At least, substreams, channels_min and channels_max must be filled for 4653 * each stream. substreams = 0 indicates that the stream doesn't exist. 4654 * When rates and/or formats are zero, the supported values are queried 4655 * from the given nid. The nid is used also by the default ops.prepare 4656 * and ops.cleanup callbacks. 4657 * 4658 * The driver needs to call ops.open in its open callback. Similarly, 4659 * ops.close is supposed to be called in the close callback. 4660 * ops.prepare should be called in the prepare or hw_params callback 4661 * with the proper parameters for set up. 4662 * ops.cleanup should be called in hw_free for clean up of streams. 4663 * 4664 * This function returns 0 if successful, or a negative error code. 4665 */ 4666 int snd_hda_build_pcms(struct hda_bus *bus) 4667 { 4668 struct hda_codec *codec; 4669 4670 list_for_each_entry(codec, &bus->codec_list, list) { 4671 int err = snd_hda_codec_build_pcms(codec); 4672 if (err < 0) 4673 return err; 4674 } 4675 return 0; 4676 } 4677 EXPORT_SYMBOL_HDA(snd_hda_build_pcms); 4678 4679 /** 4680 * snd_hda_check_board_config - compare the current codec with the config table 4681 * @codec: the HDA codec 4682 * @num_configs: number of config enums 4683 * @models: array of model name strings 4684 * @tbl: configuration table, terminated by null entries 4685 * 4686 * Compares the modelname or PCI subsystem id of the current codec with the 4687 * given configuration table. If a matching entry is found, returns its 4688 * config value (supposed to be 0 or positive). 4689 * 4690 * If no entries are matching, the function returns a negative value. 4691 */ 4692 int snd_hda_check_board_config(struct hda_codec *codec, 4693 int num_configs, const char * const *models, 4694 const struct snd_pci_quirk *tbl) 4695 { 4696 if (codec->modelname && models) { 4697 int i; 4698 for (i = 0; i < num_configs; i++) { 4699 if (models[i] && 4700 !strcmp(codec->modelname, models[i])) { 4701 snd_printd(KERN_INFO "hda_codec: model '%s' is " 4702 "selected\n", models[i]); 4703 return i; 4704 } 4705 } 4706 } 4707 4708 if (!codec->bus->pci || !tbl) 4709 return -1; 4710 4711 tbl = snd_pci_quirk_lookup(codec->bus->pci, tbl); 4712 if (!tbl) 4713 return -1; 4714 if (tbl->value >= 0 && tbl->value < num_configs) { 4715 #ifdef CONFIG_SND_DEBUG_VERBOSE 4716 char tmp[10]; 4717 const char *model = NULL; 4718 if (models) 4719 model = models[tbl->value]; 4720 if (!model) { 4721 sprintf(tmp, "#%d", tbl->value); 4722 model = tmp; 4723 } 4724 snd_printdd(KERN_INFO "hda_codec: model '%s' is selected " 4725 "for config %x:%x (%s)\n", 4726 model, tbl->subvendor, tbl->subdevice, 4727 (tbl->name ? tbl->name : "Unknown device")); 4728 #endif 4729 return tbl->value; 4730 } 4731 return -1; 4732 } 4733 EXPORT_SYMBOL_HDA(snd_hda_check_board_config); 4734 4735 /** 4736 * snd_hda_check_board_codec_sid_config - compare the current codec 4737 subsystem ID with the 4738 config table 4739 4740 This is important for Gateway notebooks with SB450 HDA Audio 4741 where the vendor ID of the PCI device is: 4742 ATI Technologies Inc SB450 HDA Audio [1002:437b] 4743 and the vendor/subvendor are found only at the codec. 4744 4745 * @codec: the HDA codec 4746 * @num_configs: number of config enums 4747 * @models: array of model name strings 4748 * @tbl: configuration table, terminated by null entries 4749 * 4750 * Compares the modelname or PCI subsystem id of the current codec with the 4751 * given configuration table. If a matching entry is found, returns its 4752 * config value (supposed to be 0 or positive). 4753 * 4754 * If no entries are matching, the function returns a negative value. 4755 */ 4756 int snd_hda_check_board_codec_sid_config(struct hda_codec *codec, 4757 int num_configs, const char * const *models, 4758 const struct snd_pci_quirk *tbl) 4759 { 4760 const struct snd_pci_quirk *q; 4761 4762 /* Search for codec ID */ 4763 for (q = tbl; q->subvendor; q++) { 4764 unsigned int mask = 0xffff0000 | q->subdevice_mask; 4765 unsigned int id = (q->subdevice | (q->subvendor << 16)) & mask; 4766 if ((codec->subsystem_id & mask) == id) 4767 break; 4768 } 4769 4770 if (!q->subvendor) 4771 return -1; 4772 4773 tbl = q; 4774 4775 if (tbl->value >= 0 && tbl->value < num_configs) { 4776 #ifdef CONFIG_SND_DEBUG_VERBOSE 4777 char tmp[10]; 4778 const char *model = NULL; 4779 if (models) 4780 model = models[tbl->value]; 4781 if (!model) { 4782 sprintf(tmp, "#%d", tbl->value); 4783 model = tmp; 4784 } 4785 snd_printdd(KERN_INFO "hda_codec: model '%s' is selected " 4786 "for config %x:%x (%s)\n", 4787 model, tbl->subvendor, tbl->subdevice, 4788 (tbl->name ? tbl->name : "Unknown device")); 4789 #endif 4790 return tbl->value; 4791 } 4792 return -1; 4793 } 4794 EXPORT_SYMBOL_HDA(snd_hda_check_board_codec_sid_config); 4795 4796 /** 4797 * snd_hda_add_new_ctls - create controls from the array 4798 * @codec: the HDA codec 4799 * @knew: the array of struct snd_kcontrol_new 4800 * 4801 * This helper function creates and add new controls in the given array. 4802 * The array must be terminated with an empty entry as terminator. 4803 * 4804 * Returns 0 if successful, or a negative error code. 4805 */ 4806 int snd_hda_add_new_ctls(struct hda_codec *codec, 4807 const struct snd_kcontrol_new *knew) 4808 { 4809 int err; 4810 4811 for (; knew->name; knew++) { 4812 struct snd_kcontrol *kctl; 4813 int addr = 0, idx = 0; 4814 if (knew->iface == -1) /* skip this codec private value */ 4815 continue; 4816 for (;;) { 4817 kctl = snd_ctl_new1(knew, codec); 4818 if (!kctl) 4819 return -ENOMEM; 4820 if (addr > 0) 4821 kctl->id.device = addr; 4822 if (idx > 0) 4823 kctl->id.index = idx; 4824 err = snd_hda_ctl_add(codec, 0, kctl); 4825 if (!err) 4826 break; 4827 /* try first with another device index corresponding to 4828 * the codec addr; if it still fails (or it's the 4829 * primary codec), then try another control index 4830 */ 4831 if (!addr && codec->addr) 4832 addr = codec->addr; 4833 else if (!idx && !knew->index) { 4834 idx = find_empty_mixer_ctl_idx(codec, 4835 knew->name, 0); 4836 if (idx <= 0) 4837 return err; 4838 } else 4839 return err; 4840 } 4841 } 4842 return 0; 4843 } 4844 EXPORT_SYMBOL_HDA(snd_hda_add_new_ctls); 4845 4846 #ifdef CONFIG_PM 4847 static void hda_power_work(struct work_struct *work) 4848 { 4849 struct hda_codec *codec = 4850 container_of(work, struct hda_codec, power_work.work); 4851 struct hda_bus *bus = codec->bus; 4852 unsigned int state; 4853 4854 spin_lock(&codec->power_lock); 4855 if (codec->power_transition > 0) { /* during power-up sequence? */ 4856 spin_unlock(&codec->power_lock); 4857 return; 4858 } 4859 if (!codec->power_on || codec->power_count) { 4860 codec->power_transition = 0; 4861 spin_unlock(&codec->power_lock); 4862 return; 4863 } 4864 spin_unlock(&codec->power_lock); 4865 4866 state = hda_call_codec_suspend(codec, true); 4867 codec->pm_down_notified = 0; 4868 if (!bus->power_keep_link_on && (state & AC_PWRST_CLK_STOP_OK)) { 4869 codec->pm_down_notified = 1; 4870 hda_call_pm_notify(bus, false); 4871 } 4872 } 4873 4874 static void hda_keep_power_on(struct hda_codec *codec) 4875 { 4876 spin_lock(&codec->power_lock); 4877 codec->power_count++; 4878 codec->power_on = 1; 4879 codec->power_jiffies = jiffies; 4880 spin_unlock(&codec->power_lock); 4881 } 4882 4883 /* update the power on/off account with the current jiffies */ 4884 void snd_hda_update_power_acct(struct hda_codec *codec) 4885 { 4886 unsigned long delta = jiffies - codec->power_jiffies; 4887 if (codec->power_on) 4888 codec->power_on_acct += delta; 4889 else 4890 codec->power_off_acct += delta; 4891 codec->power_jiffies += delta; 4892 } 4893 4894 /* Transition to powered up, if wait_power_down then wait for a pending 4895 * transition to D3 to complete. A pending D3 transition is indicated 4896 * with power_transition == -1. */ 4897 /* call this with codec->power_lock held! */ 4898 static void __snd_hda_power_up(struct hda_codec *codec, bool wait_power_down) 4899 { 4900 struct hda_bus *bus = codec->bus; 4901 4902 /* Return if power_on or transitioning to power_on, unless currently 4903 * powering down. */ 4904 if ((codec->power_on || codec->power_transition > 0) && 4905 !(wait_power_down && codec->power_transition < 0)) 4906 return; 4907 spin_unlock(&codec->power_lock); 4908 4909 cancel_delayed_work_sync(&codec->power_work); 4910 4911 spin_lock(&codec->power_lock); 4912 /* If the power down delayed work was cancelled above before starting, 4913 * then there is no need to go through power up here. 4914 */ 4915 if (codec->power_on) { 4916 if (codec->power_transition < 0) 4917 codec->power_transition = 0; 4918 return; 4919 } 4920 4921 trace_hda_power_up(codec); 4922 snd_hda_update_power_acct(codec); 4923 codec->power_on = 1; 4924 codec->power_jiffies = jiffies; 4925 codec->power_transition = 1; /* avoid reentrance */ 4926 spin_unlock(&codec->power_lock); 4927 4928 if (codec->pm_down_notified) { 4929 codec->pm_down_notified = 0; 4930 hda_call_pm_notify(bus, true); 4931 } 4932 4933 hda_call_codec_resume(codec); 4934 4935 spin_lock(&codec->power_lock); 4936 codec->power_transition = 0; 4937 } 4938 4939 #define power_save(codec) \ 4940 ((codec)->bus->power_save ? *(codec)->bus->power_save : 0) 4941 4942 /* Transition to powered down */ 4943 static void __snd_hda_power_down(struct hda_codec *codec) 4944 { 4945 if (!codec->power_on || codec->power_count || codec->power_transition) 4946 return; 4947 4948 if (power_save(codec)) { 4949 codec->power_transition = -1; /* avoid reentrance */ 4950 queue_delayed_work(codec->bus->workq, &codec->power_work, 4951 msecs_to_jiffies(power_save(codec) * 1000)); 4952 } 4953 } 4954 4955 /** 4956 * snd_hda_power_save - Power-up/down/sync the codec 4957 * @codec: HD-audio codec 4958 * @delta: the counter delta to change 4959 * 4960 * Change the power-up counter via @delta, and power up or down the hardware 4961 * appropriately. For the power-down, queue to the delayed action. 4962 * Passing zero to @delta means to synchronize the power state. 4963 */ 4964 void snd_hda_power_save(struct hda_codec *codec, int delta, bool d3wait) 4965 { 4966 spin_lock(&codec->power_lock); 4967 codec->power_count += delta; 4968 trace_hda_power_count(codec); 4969 if (delta > 0) 4970 __snd_hda_power_up(codec, d3wait); 4971 else 4972 __snd_hda_power_down(codec); 4973 spin_unlock(&codec->power_lock); 4974 } 4975 EXPORT_SYMBOL_HDA(snd_hda_power_save); 4976 4977 /** 4978 * snd_hda_check_amp_list_power - Check the amp list and update the power 4979 * @codec: HD-audio codec 4980 * @check: the object containing an AMP list and the status 4981 * @nid: NID to check / update 4982 * 4983 * Check whether the given NID is in the amp list. If it's in the list, 4984 * check the current AMP status, and update the the power-status according 4985 * to the mute status. 4986 * 4987 * This function is supposed to be set or called from the check_power_status 4988 * patch ops. 4989 */ 4990 int snd_hda_check_amp_list_power(struct hda_codec *codec, 4991 struct hda_loopback_check *check, 4992 hda_nid_t nid) 4993 { 4994 const struct hda_amp_list *p; 4995 int ch, v; 4996 4997 if (!check->amplist) 4998 return 0; 4999 for (p = check->amplist; p->nid; p++) { 5000 if (p->nid == nid) 5001 break; 5002 } 5003 if (!p->nid) 5004 return 0; /* nothing changed */ 5005 5006 for (p = check->amplist; p->nid; p++) { 5007 for (ch = 0; ch < 2; ch++) { 5008 v = snd_hda_codec_amp_read(codec, p->nid, ch, p->dir, 5009 p->idx); 5010 if (!(v & HDA_AMP_MUTE) && v > 0) { 5011 if (!check->power_on) { 5012 check->power_on = 1; 5013 snd_hda_power_up(codec); 5014 } 5015 return 1; 5016 } 5017 } 5018 } 5019 if (check->power_on) { 5020 check->power_on = 0; 5021 snd_hda_power_down(codec); 5022 } 5023 return 0; 5024 } 5025 EXPORT_SYMBOL_HDA(snd_hda_check_amp_list_power); 5026 #endif 5027 5028 /* 5029 * Channel mode helper 5030 */ 5031 5032 /** 5033 * snd_hda_ch_mode_info - Info callback helper for the channel mode enum 5034 */ 5035 int snd_hda_ch_mode_info(struct hda_codec *codec, 5036 struct snd_ctl_elem_info *uinfo, 5037 const struct hda_channel_mode *chmode, 5038 int num_chmodes) 5039 { 5040 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 5041 uinfo->count = 1; 5042 uinfo->value.enumerated.items = num_chmodes; 5043 if (uinfo->value.enumerated.item >= num_chmodes) 5044 uinfo->value.enumerated.item = num_chmodes - 1; 5045 sprintf(uinfo->value.enumerated.name, "%dch", 5046 chmode[uinfo->value.enumerated.item].channels); 5047 return 0; 5048 } 5049 EXPORT_SYMBOL_HDA(snd_hda_ch_mode_info); 5050 5051 /** 5052 * snd_hda_ch_mode_get - Get callback helper for the channel mode enum 5053 */ 5054 int snd_hda_ch_mode_get(struct hda_codec *codec, 5055 struct snd_ctl_elem_value *ucontrol, 5056 const struct hda_channel_mode *chmode, 5057 int num_chmodes, 5058 int max_channels) 5059 { 5060 int i; 5061 5062 for (i = 0; i < num_chmodes; i++) { 5063 if (max_channels == chmode[i].channels) { 5064 ucontrol->value.enumerated.item[0] = i; 5065 break; 5066 } 5067 } 5068 return 0; 5069 } 5070 EXPORT_SYMBOL_HDA(snd_hda_ch_mode_get); 5071 5072 /** 5073 * snd_hda_ch_mode_put - Put callback helper for the channel mode enum 5074 */ 5075 int snd_hda_ch_mode_put(struct hda_codec *codec, 5076 struct snd_ctl_elem_value *ucontrol, 5077 const struct hda_channel_mode *chmode, 5078 int num_chmodes, 5079 int *max_channelsp) 5080 { 5081 unsigned int mode; 5082 5083 mode = ucontrol->value.enumerated.item[0]; 5084 if (mode >= num_chmodes) 5085 return -EINVAL; 5086 if (*max_channelsp == chmode[mode].channels) 5087 return 0; 5088 /* change the current channel setting */ 5089 *max_channelsp = chmode[mode].channels; 5090 if (chmode[mode].sequence) 5091 snd_hda_sequence_write_cache(codec, chmode[mode].sequence); 5092 return 1; 5093 } 5094 EXPORT_SYMBOL_HDA(snd_hda_ch_mode_put); 5095 5096 /* 5097 * input MUX helper 5098 */ 5099 5100 /** 5101 * snd_hda_input_mux_info_info - Info callback helper for the input-mux enum 5102 */ 5103 int snd_hda_input_mux_info(const struct hda_input_mux *imux, 5104 struct snd_ctl_elem_info *uinfo) 5105 { 5106 unsigned int index; 5107 5108 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 5109 uinfo->count = 1; 5110 uinfo->value.enumerated.items = imux->num_items; 5111 if (!imux->num_items) 5112 return 0; 5113 index = uinfo->value.enumerated.item; 5114 if (index >= imux->num_items) 5115 index = imux->num_items - 1; 5116 strcpy(uinfo->value.enumerated.name, imux->items[index].label); 5117 return 0; 5118 } 5119 EXPORT_SYMBOL_HDA(snd_hda_input_mux_info); 5120 5121 /** 5122 * snd_hda_input_mux_info_put - Put callback helper for the input-mux enum 5123 */ 5124 int snd_hda_input_mux_put(struct hda_codec *codec, 5125 const struct hda_input_mux *imux, 5126 struct snd_ctl_elem_value *ucontrol, 5127 hda_nid_t nid, 5128 unsigned int *cur_val) 5129 { 5130 unsigned int idx; 5131 5132 if (!imux->num_items) 5133 return 0; 5134 idx = ucontrol->value.enumerated.item[0]; 5135 if (idx >= imux->num_items) 5136 idx = imux->num_items - 1; 5137 if (*cur_val == idx) 5138 return 0; 5139 snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_CONNECT_SEL, 5140 imux->items[idx].index); 5141 *cur_val = idx; 5142 return 1; 5143 } 5144 EXPORT_SYMBOL_HDA(snd_hda_input_mux_put); 5145 5146 5147 /* 5148 * process kcontrol info callback of a simple string enum array 5149 * when @num_items is 0 or @texts is NULL, assume a boolean enum array 5150 */ 5151 int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol, 5152 struct snd_ctl_elem_info *uinfo, 5153 int num_items, const char * const *texts) 5154 { 5155 static const char * const texts_default[] = { 5156 "Disabled", "Enabled" 5157 }; 5158 5159 if (!texts || !num_items) { 5160 num_items = 2; 5161 texts = texts_default; 5162 } 5163 5164 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; 5165 uinfo->count = 1; 5166 uinfo->value.enumerated.items = num_items; 5167 if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) 5168 uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1; 5169 strcpy(uinfo->value.enumerated.name, 5170 texts[uinfo->value.enumerated.item]); 5171 return 0; 5172 } 5173 EXPORT_SYMBOL_HDA(snd_hda_enum_helper_info); 5174 5175 /* 5176 * Multi-channel / digital-out PCM helper functions 5177 */ 5178 5179 /* setup SPDIF output stream */ 5180 static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid, 5181 unsigned int stream_tag, unsigned int format) 5182 { 5183 struct hda_spdif_out *spdif; 5184 unsigned int curr_fmt; 5185 bool reset; 5186 5187 spdif = snd_hda_spdif_out_of_nid(codec, nid); 5188 curr_fmt = snd_hda_codec_read(codec, nid, 0, 5189 AC_VERB_GET_STREAM_FORMAT, 0); 5190 reset = codec->spdif_status_reset && 5191 (spdif->ctls & AC_DIG1_ENABLE) && 5192 curr_fmt != format; 5193 5194 /* turn off SPDIF if needed; otherwise the IEC958 bits won't be 5195 updated */ 5196 if (reset) 5197 set_dig_out_convert(codec, nid, 5198 spdif->ctls & ~AC_DIG1_ENABLE & 0xff, 5199 -1); 5200 snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format); 5201 if (codec->slave_dig_outs) { 5202 const hda_nid_t *d; 5203 for (d = codec->slave_dig_outs; *d; d++) 5204 snd_hda_codec_setup_stream(codec, *d, stream_tag, 0, 5205 format); 5206 } 5207 /* turn on again (if needed) */ 5208 if (reset) 5209 set_dig_out_convert(codec, nid, 5210 spdif->ctls & 0xff, -1); 5211 } 5212 5213 static void cleanup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid) 5214 { 5215 snd_hda_codec_cleanup_stream(codec, nid); 5216 if (codec->slave_dig_outs) { 5217 const hda_nid_t *d; 5218 for (d = codec->slave_dig_outs; *d; d++) 5219 snd_hda_codec_cleanup_stream(codec, *d); 5220 } 5221 } 5222 5223 /** 5224 * snd_hda_bus_reboot_notify - call the reboot notifier of each codec 5225 * @bus: HD-audio bus 5226 */ 5227 void snd_hda_bus_reboot_notify(struct hda_bus *bus) 5228 { 5229 struct hda_codec *codec; 5230 5231 if (!bus) 5232 return; 5233 list_for_each_entry(codec, &bus->codec_list, list) { 5234 if (hda_codec_is_power_on(codec) && 5235 codec->patch_ops.reboot_notify) 5236 codec->patch_ops.reboot_notify(codec); 5237 } 5238 } 5239 EXPORT_SYMBOL_HDA(snd_hda_bus_reboot_notify); 5240 5241 /** 5242 * snd_hda_multi_out_dig_open - open the digital out in the exclusive mode 5243 */ 5244 int snd_hda_multi_out_dig_open(struct hda_codec *codec, 5245 struct hda_multi_out *mout) 5246 { 5247 mutex_lock(&codec->spdif_mutex); 5248 if (mout->dig_out_used == HDA_DIG_ANALOG_DUP) 5249 /* already opened as analog dup; reset it once */ 5250 cleanup_dig_out_stream(codec, mout->dig_out_nid); 5251 mout->dig_out_used = HDA_DIG_EXCLUSIVE; 5252 mutex_unlock(&codec->spdif_mutex); 5253 return 0; 5254 } 5255 EXPORT_SYMBOL_HDA(snd_hda_multi_out_dig_open); 5256 5257 /** 5258 * snd_hda_multi_out_dig_prepare - prepare the digital out stream 5259 */ 5260 int snd_hda_multi_out_dig_prepare(struct hda_codec *codec, 5261 struct hda_multi_out *mout, 5262 unsigned int stream_tag, 5263 unsigned int format, 5264 struct snd_pcm_substream *substream) 5265 { 5266 mutex_lock(&codec->spdif_mutex); 5267 setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format); 5268 mutex_unlock(&codec->spdif_mutex); 5269 return 0; 5270 } 5271 EXPORT_SYMBOL_HDA(snd_hda_multi_out_dig_prepare); 5272 5273 /** 5274 * snd_hda_multi_out_dig_cleanup - clean-up the digital out stream 5275 */ 5276 int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec, 5277 struct hda_multi_out *mout) 5278 { 5279 mutex_lock(&codec->spdif_mutex); 5280 cleanup_dig_out_stream(codec, mout->dig_out_nid); 5281 mutex_unlock(&codec->spdif_mutex); 5282 return 0; 5283 } 5284 EXPORT_SYMBOL_HDA(snd_hda_multi_out_dig_cleanup); 5285 5286 /** 5287 * snd_hda_multi_out_dig_close - release the digital out stream 5288 */ 5289 int snd_hda_multi_out_dig_close(struct hda_codec *codec, 5290 struct hda_multi_out *mout) 5291 { 5292 mutex_lock(&codec->spdif_mutex); 5293 mout->dig_out_used = 0; 5294 mutex_unlock(&codec->spdif_mutex); 5295 return 0; 5296 } 5297 EXPORT_SYMBOL_HDA(snd_hda_multi_out_dig_close); 5298 5299 /** 5300 * snd_hda_multi_out_analog_open - open analog outputs 5301 * 5302 * Open analog outputs and set up the hw-constraints. 5303 * If the digital outputs can be opened as slave, open the digital 5304 * outputs, too. 5305 */ 5306 int snd_hda_multi_out_analog_open(struct hda_codec *codec, 5307 struct hda_multi_out *mout, 5308 struct snd_pcm_substream *substream, 5309 struct hda_pcm_stream *hinfo) 5310 { 5311 struct snd_pcm_runtime *runtime = substream->runtime; 5312 runtime->hw.channels_max = mout->max_channels; 5313 if (mout->dig_out_nid) { 5314 if (!mout->analog_rates) { 5315 mout->analog_rates = hinfo->rates; 5316 mout->analog_formats = hinfo->formats; 5317 mout->analog_maxbps = hinfo->maxbps; 5318 } else { 5319 runtime->hw.rates = mout->analog_rates; 5320 runtime->hw.formats = mout->analog_formats; 5321 hinfo->maxbps = mout->analog_maxbps; 5322 } 5323 if (!mout->spdif_rates) { 5324 snd_hda_query_supported_pcm(codec, mout->dig_out_nid, 5325 &mout->spdif_rates, 5326 &mout->spdif_formats, 5327 &mout->spdif_maxbps); 5328 } 5329 mutex_lock(&codec->spdif_mutex); 5330 if (mout->share_spdif) { 5331 if ((runtime->hw.rates & mout->spdif_rates) && 5332 (runtime->hw.formats & mout->spdif_formats)) { 5333 runtime->hw.rates &= mout->spdif_rates; 5334 runtime->hw.formats &= mout->spdif_formats; 5335 if (mout->spdif_maxbps < hinfo->maxbps) 5336 hinfo->maxbps = mout->spdif_maxbps; 5337 } else { 5338 mout->share_spdif = 0; 5339 /* FIXME: need notify? */ 5340 } 5341 } 5342 mutex_unlock(&codec->spdif_mutex); 5343 } 5344 return snd_pcm_hw_constraint_step(substream->runtime, 0, 5345 SNDRV_PCM_HW_PARAM_CHANNELS, 2); 5346 } 5347 EXPORT_SYMBOL_HDA(snd_hda_multi_out_analog_open); 5348 5349 /** 5350 * snd_hda_multi_out_analog_prepare - Preapre the analog outputs. 5351 * 5352 * Set up the i/o for analog out. 5353 * When the digital out is available, copy the front out to digital out, too. 5354 */ 5355 int snd_hda_multi_out_analog_prepare(struct hda_codec *codec, 5356 struct hda_multi_out *mout, 5357 unsigned int stream_tag, 5358 unsigned int format, 5359 struct snd_pcm_substream *substream) 5360 { 5361 const hda_nid_t *nids = mout->dac_nids; 5362 int chs = substream->runtime->channels; 5363 struct hda_spdif_out *spdif; 5364 int i; 5365 5366 mutex_lock(&codec->spdif_mutex); 5367 spdif = snd_hda_spdif_out_of_nid(codec, mout->dig_out_nid); 5368 if (mout->dig_out_nid && mout->share_spdif && 5369 mout->dig_out_used != HDA_DIG_EXCLUSIVE) { 5370 if (chs == 2 && 5371 snd_hda_is_supported_format(codec, mout->dig_out_nid, 5372 format) && 5373 !(spdif->status & IEC958_AES0_NONAUDIO)) { 5374 mout->dig_out_used = HDA_DIG_ANALOG_DUP; 5375 setup_dig_out_stream(codec, mout->dig_out_nid, 5376 stream_tag, format); 5377 } else { 5378 mout->dig_out_used = 0; 5379 cleanup_dig_out_stream(codec, mout->dig_out_nid); 5380 } 5381 } 5382 mutex_unlock(&codec->spdif_mutex); 5383 5384 /* front */ 5385 snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag, 5386 0, format); 5387 if (!mout->no_share_stream && 5388 mout->hp_nid && mout->hp_nid != nids[HDA_FRONT]) 5389 /* headphone out will just decode front left/right (stereo) */ 5390 snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag, 5391 0, format); 5392 /* extra outputs copied from front */ 5393 for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++) 5394 if (!mout->no_share_stream && mout->hp_out_nid[i]) 5395 snd_hda_codec_setup_stream(codec, 5396 mout->hp_out_nid[i], 5397 stream_tag, 0, format); 5398 for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++) 5399 if (!mout->no_share_stream && mout->extra_out_nid[i]) 5400 snd_hda_codec_setup_stream(codec, 5401 mout->extra_out_nid[i], 5402 stream_tag, 0, format); 5403 5404 /* surrounds */ 5405 for (i = 1; i < mout->num_dacs; i++) { 5406 if (chs >= (i + 1) * 2) /* independent out */ 5407 snd_hda_codec_setup_stream(codec, nids[i], stream_tag, 5408 i * 2, format); 5409 else if (!mout->no_share_stream) /* copy front */ 5410 snd_hda_codec_setup_stream(codec, nids[i], stream_tag, 5411 0, format); 5412 } 5413 return 0; 5414 } 5415 EXPORT_SYMBOL_HDA(snd_hda_multi_out_analog_prepare); 5416 5417 /** 5418 * snd_hda_multi_out_analog_cleanup - clean up the setting for analog out 5419 */ 5420 int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec, 5421 struct hda_multi_out *mout) 5422 { 5423 const hda_nid_t *nids = mout->dac_nids; 5424 int i; 5425 5426 for (i = 0; i < mout->num_dacs; i++) 5427 snd_hda_codec_cleanup_stream(codec, nids[i]); 5428 if (mout->hp_nid) 5429 snd_hda_codec_cleanup_stream(codec, mout->hp_nid); 5430 for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++) 5431 if (mout->hp_out_nid[i]) 5432 snd_hda_codec_cleanup_stream(codec, 5433 mout->hp_out_nid[i]); 5434 for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++) 5435 if (mout->extra_out_nid[i]) 5436 snd_hda_codec_cleanup_stream(codec, 5437 mout->extra_out_nid[i]); 5438 mutex_lock(&codec->spdif_mutex); 5439 if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) { 5440 cleanup_dig_out_stream(codec, mout->dig_out_nid); 5441 mout->dig_out_used = 0; 5442 } 5443 mutex_unlock(&codec->spdif_mutex); 5444 return 0; 5445 } 5446 EXPORT_SYMBOL_HDA(snd_hda_multi_out_analog_cleanup); 5447 5448 /** 5449 * snd_hda_get_default_vref - Get the default (mic) VREF pin bits 5450 * 5451 * Guess the suitable VREF pin bits to be set as the pin-control value. 5452 * Note: the function doesn't set the AC_PINCTL_IN_EN bit. 5453 */ 5454 unsigned int snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin) 5455 { 5456 unsigned int pincap; 5457 unsigned int oldval; 5458 oldval = snd_hda_codec_read(codec, pin, 0, 5459 AC_VERB_GET_PIN_WIDGET_CONTROL, 0); 5460 pincap = snd_hda_query_pin_caps(codec, pin); 5461 pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT; 5462 /* Exception: if the default pin setup is vref50, we give it priority */ 5463 if ((pincap & AC_PINCAP_VREF_80) && oldval != PIN_VREF50) 5464 return AC_PINCTL_VREF_80; 5465 else if (pincap & AC_PINCAP_VREF_50) 5466 return AC_PINCTL_VREF_50; 5467 else if (pincap & AC_PINCAP_VREF_100) 5468 return AC_PINCTL_VREF_100; 5469 else if (pincap & AC_PINCAP_VREF_GRD) 5470 return AC_PINCTL_VREF_GRD; 5471 return AC_PINCTL_VREF_HIZ; 5472 } 5473 EXPORT_SYMBOL_HDA(snd_hda_get_default_vref); 5474 5475 /* correct the pin ctl value for matching with the pin cap */ 5476 unsigned int snd_hda_correct_pin_ctl(struct hda_codec *codec, 5477 hda_nid_t pin, unsigned int val) 5478 { 5479 static unsigned int cap_lists[][2] = { 5480 { AC_PINCTL_VREF_100, AC_PINCAP_VREF_100 }, 5481 { AC_PINCTL_VREF_80, AC_PINCAP_VREF_80 }, 5482 { AC_PINCTL_VREF_50, AC_PINCAP_VREF_50 }, 5483 { AC_PINCTL_VREF_GRD, AC_PINCAP_VREF_GRD }, 5484 }; 5485 unsigned int cap; 5486 5487 if (!val) 5488 return 0; 5489 cap = snd_hda_query_pin_caps(codec, pin); 5490 if (!cap) 5491 return val; /* don't know what to do... */ 5492 5493 if (val & AC_PINCTL_OUT_EN) { 5494 if (!(cap & AC_PINCAP_OUT)) 5495 val &= ~(AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN); 5496 else if ((val & AC_PINCTL_HP_EN) && !(cap & AC_PINCAP_HP_DRV)) 5497 val &= ~AC_PINCTL_HP_EN; 5498 } 5499 5500 if (val & AC_PINCTL_IN_EN) { 5501 if (!(cap & AC_PINCAP_IN)) 5502 val &= ~(AC_PINCTL_IN_EN | AC_PINCTL_VREFEN); 5503 else { 5504 unsigned int vcap, vref; 5505 int i; 5506 vcap = (cap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT; 5507 vref = val & AC_PINCTL_VREFEN; 5508 for (i = 0; i < ARRAY_SIZE(cap_lists); i++) { 5509 if (vref == cap_lists[i][0] && 5510 !(vcap & cap_lists[i][1])) { 5511 if (i == ARRAY_SIZE(cap_lists) - 1) 5512 vref = AC_PINCTL_VREF_HIZ; 5513 else 5514 vref = cap_lists[i + 1][0]; 5515 } 5516 } 5517 val &= ~AC_PINCTL_VREFEN; 5518 val |= vref; 5519 } 5520 } 5521 5522 return val; 5523 } 5524 EXPORT_SYMBOL_HDA(snd_hda_correct_pin_ctl); 5525 5526 int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin, 5527 unsigned int val, bool cached) 5528 { 5529 val = snd_hda_correct_pin_ctl(codec, pin, val); 5530 snd_hda_codec_set_pin_target(codec, pin, val); 5531 if (cached) 5532 return snd_hda_codec_update_cache(codec, pin, 0, 5533 AC_VERB_SET_PIN_WIDGET_CONTROL, val); 5534 else 5535 return snd_hda_codec_write(codec, pin, 0, 5536 AC_VERB_SET_PIN_WIDGET_CONTROL, val); 5537 } 5538 EXPORT_SYMBOL_HDA(_snd_hda_set_pin_ctl); 5539 5540 /** 5541 * snd_hda_add_imux_item - Add an item to input_mux 5542 * 5543 * When the same label is used already in the existing items, the number 5544 * suffix is appended to the label. This label index number is stored 5545 * to type_idx when non-NULL pointer is given. 5546 */ 5547 int snd_hda_add_imux_item(struct hda_input_mux *imux, const char *label, 5548 int index, int *type_idx) 5549 { 5550 int i, label_idx = 0; 5551 if (imux->num_items >= HDA_MAX_NUM_INPUTS) { 5552 snd_printd(KERN_ERR "hda_codec: Too many imux items!\n"); 5553 return -EINVAL; 5554 } 5555 for (i = 0; i < imux->num_items; i++) { 5556 if (!strncmp(label, imux->items[i].label, strlen(label))) 5557 label_idx++; 5558 } 5559 if (type_idx) 5560 *type_idx = label_idx; 5561 if (label_idx > 0) 5562 snprintf(imux->items[imux->num_items].label, 5563 sizeof(imux->items[imux->num_items].label), 5564 "%s %d", label, label_idx); 5565 else 5566 strlcpy(imux->items[imux->num_items].label, label, 5567 sizeof(imux->items[imux->num_items].label)); 5568 imux->items[imux->num_items].index = index; 5569 imux->num_items++; 5570 return 0; 5571 } 5572 EXPORT_SYMBOL_HDA(snd_hda_add_imux_item); 5573 5574 5575 #ifdef CONFIG_PM 5576 /* 5577 * power management 5578 */ 5579 5580 /** 5581 * snd_hda_suspend - suspend the codecs 5582 * @bus: the HDA bus 5583 * 5584 * Returns 0 if successful. 5585 */ 5586 int snd_hda_suspend(struct hda_bus *bus) 5587 { 5588 struct hda_codec *codec; 5589 5590 list_for_each_entry(codec, &bus->codec_list, list) { 5591 cancel_delayed_work_sync(&codec->jackpoll_work); 5592 if (hda_codec_is_power_on(codec)) 5593 hda_call_codec_suspend(codec, false); 5594 } 5595 return 0; 5596 } 5597 EXPORT_SYMBOL_HDA(snd_hda_suspend); 5598 5599 /** 5600 * snd_hda_resume - resume the codecs 5601 * @bus: the HDA bus 5602 * 5603 * Returns 0 if successful. 5604 */ 5605 int snd_hda_resume(struct hda_bus *bus) 5606 { 5607 struct hda_codec *codec; 5608 5609 list_for_each_entry(codec, &bus->codec_list, list) { 5610 hda_call_codec_resume(codec); 5611 } 5612 return 0; 5613 } 5614 EXPORT_SYMBOL_HDA(snd_hda_resume); 5615 #endif /* CONFIG_PM */ 5616 5617 /* 5618 * generic arrays 5619 */ 5620 5621 /** 5622 * snd_array_new - get a new element from the given array 5623 * @array: the array object 5624 * 5625 * Get a new element from the given array. If it exceeds the 5626 * pre-allocated array size, re-allocate the array. 5627 * 5628 * Returns NULL if allocation failed. 5629 */ 5630 void *snd_array_new(struct snd_array *array) 5631 { 5632 if (snd_BUG_ON(!array->elem_size)) 5633 return NULL; 5634 if (array->used >= array->alloced) { 5635 int num = array->alloced + array->alloc_align; 5636 int size = (num + 1) * array->elem_size; 5637 void *nlist; 5638 if (snd_BUG_ON(num >= 4096)) 5639 return NULL; 5640 nlist = krealloc(array->list, size, GFP_KERNEL | __GFP_ZERO); 5641 if (!nlist) 5642 return NULL; 5643 array->list = nlist; 5644 array->alloced = num; 5645 } 5646 return snd_array_elem(array, array->used++); 5647 } 5648 EXPORT_SYMBOL_HDA(snd_array_new); 5649 5650 /** 5651 * snd_array_free - free the given array elements 5652 * @array: the array object 5653 */ 5654 void snd_array_free(struct snd_array *array) 5655 { 5656 kfree(array->list); 5657 array->used = 0; 5658 array->alloced = 0; 5659 array->list = NULL; 5660 } 5661 EXPORT_SYMBOL_HDA(snd_array_free); 5662 5663 /** 5664 * snd_print_pcm_bits - Print the supported PCM fmt bits to the string buffer 5665 * @pcm: PCM caps bits 5666 * @buf: the string buffer to write 5667 * @buflen: the max buffer length 5668 * 5669 * used by hda_proc.c and hda_eld.c 5670 */ 5671 void snd_print_pcm_bits(int pcm, char *buf, int buflen) 5672 { 5673 static unsigned int bits[] = { 8, 16, 20, 24, 32 }; 5674 int i, j; 5675 5676 for (i = 0, j = 0; i < ARRAY_SIZE(bits); i++) 5677 if (pcm & (AC_SUPPCM_BITS_8 << i)) 5678 j += snprintf(buf + j, buflen - j, " %d", bits[i]); 5679 5680 buf[j] = '\0'; /* necessary when j == 0 */ 5681 } 5682 EXPORT_SYMBOL_HDA(snd_print_pcm_bits); 5683 5684 MODULE_DESCRIPTION("HDA codec core"); 5685 MODULE_LICENSE("GPL"); 5686