git.oblomov.eu Git - linux-2.6/blob - sound/pci/hda/hda_codec.c

   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 <sound/driver.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 <sound/core.h>
  29 #include "hda_codec.h"
  30 #include <sound/asoundef.h>
  31 #include <sound/tlv.h>
  32 #include <sound/initval.h>
  33 #include "hda_local.h"
  34
  35
  36 /*
  37  * vendor / preset table
  38  */
  39
  40 struct hda_vendor_id {
  41         unsigned int id;
  42         const char *name;
  43 };
  44
  45 /* codec vendor labels */
  46 static struct hda_vendor_id hda_vendor_ids[] = {
  47         { 0x10ec, "Realtek" },
  48         { 0x1057, "Motorola" },
  49         { 0x1106, "VIA" },
  50         { 0x11d4, "Analog Devices" },
  51         { 0x13f6, "C-Media" },
  52         { 0x14f1, "Conexant" },
  53         { 0x434d, "C-Media" },
  54         { 0x8384, "SigmaTel" },
  55         {} /* terminator */
  56 };
  57
  58 /* codec presets */
  59 #include "hda_patch.h"
  60
  61
  62 /**
  63  * snd_hda_codec_read - send a command and get the response
  64  * @codec: the HDA codec
  65  * @nid: NID to send the command
  66  * @direct: direct flag
  67  * @verb: the verb to send
  68  * @parm: the parameter for the verb
  69  *
  70  * Send a single command and read the corresponding response.
  71  *
  72  * Returns the obtained response value, or -1 for an error.
  73  */
  74 unsigned int snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid,
  75                                 int direct,
  76                                 unsigned int verb, unsigned int parm)
  77 {
  78         unsigned int res;
  79         mutex_lock(&codec->bus->cmd_mutex);
  80         if (!codec->bus->ops.command(codec, nid, direct, verb, parm))
  81                 res = codec->bus->ops.get_response(codec);
  82         else
  83                 res = (unsigned int)-1;
  84         mutex_unlock(&codec->bus->cmd_mutex);
  85         return res;
  86 }
  87
  88 /**
  89  * snd_hda_codec_write - send a single command without waiting for response
  90  * @codec: the HDA codec
  91  * @nid: NID to send the command
  92  * @direct: direct flag
  93  * @verb: the verb to send
  94  * @parm: the parameter for the verb
  95  *
  96  * Send a single command without waiting for response.
  97  *
  98  * Returns 0 if successful, or a negative error code.
  99  */
 100 int snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int direct,
 101                          unsigned int verb, unsigned int parm)
 102 {
 103         int err;
 104         mutex_lock(&codec->bus->cmd_mutex);
 105         err = codec->bus->ops.command(codec, nid, direct, verb, parm);
 106         mutex_unlock(&codec->bus->cmd_mutex);
 107         return err;
 108 }
 109
 110 /**
 111  * snd_hda_sequence_write - sequence writes
 112  * @codec: the HDA codec
 113  * @seq: VERB array to send
 114  *
 115  * Send the commands sequentially from the given array.
 116  * The array must be terminated with NID=0.
 117  */
 118 void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq)
 119 {
 120         for (; seq->nid; seq++)
 121                 snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param);
 122 }
 123
 124 /**
 125  * snd_hda_get_sub_nodes - get the range of sub nodes
 126  * @codec: the HDA codec
 127  * @nid: NID to parse
 128  * @start_id: the pointer to store the start NID
 129  *
 130  * Parse the NID and store the start NID of its sub-nodes.
 131  * Returns the number of sub-nodes.
 132  */
 133 int snd_hda_get_sub_nodes(struct hda_codec *codec, hda_nid_t nid,
 134                           hda_nid_t *start_id)
 135 {
 136         unsigned int parm;
 137
 138         parm = snd_hda_param_read(codec, nid, AC_PAR_NODE_COUNT);
 139         *start_id = (parm >> 16) & 0x7fff;
 140         return (int)(parm & 0x7fff);
 141 }
 142
 143 /**
 144  * snd_hda_get_connections - get connection list
 145  * @codec: the HDA codec
 146  * @nid: NID to parse
 147  * @conn_list: connection list array
 148  * @max_conns: max. number of connections to store
 149  *
 150  * Parses the connection list of the given widget and stores the list
 151  * of NIDs.
 152  *
 153  * Returns the number of connections, or a negative error code.
 154  */
 155 int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
 156                             hda_nid_t *conn_list, int max_conns)
 157 {
 158         unsigned int parm;
 159         int i, conn_len, conns;
 160         unsigned int shift, num_elems, mask;
 161         hda_nid_t prev_nid;
 162
 163         snd_assert(conn_list && max_conns > 0, return -EINVAL);
 164
 165         parm = snd_hda_param_read(codec, nid, AC_PAR_CONNLIST_LEN);
 166         if (parm & AC_CLIST_LONG) {
 167                 /* long form */
 168                 shift = 16;
 169                 num_elems = 2;
 170         } else {
 171                 /* short form */
 172                 shift = 8;
 173                 num_elems = 4;
 174         }
 175         conn_len = parm & AC_CLIST_LENGTH;
 176         mask = (1 << (shift-1)) - 1;
 177
 178         if (!conn_len)
 179                 return 0; /* no connection */
 180
 181         if (conn_len == 1) {
 182                 /* single connection */
 183                 parm = snd_hda_codec_read(codec, nid, 0,
 184                                           AC_VERB_GET_CONNECT_LIST, 0);
 185                 conn_list[0] = parm & mask;
 186                 return 1;
 187         }
 188
 189         /* multi connection */
 190         conns = 0;
 191         prev_nid = 0;
 192         for (i = 0; i < conn_len; i++) {
 193                 int range_val;
 194                 hda_nid_t val, n;
 195
 196                 if (i % num_elems == 0)
 197                         parm = snd_hda_codec_read(codec, nid, 0,
 198                                                   AC_VERB_GET_CONNECT_LIST, i);
 199                 range_val = !!(parm & (1 << (shift-1))); /* ranges */
 200                 val = parm & mask;
 201                 parm >>= shift;
 202                 if (range_val) {
 203                         /* ranges between the previous and this one */
 204                         if (!prev_nid || prev_nid >= val) {
 205                                 snd_printk(KERN_WARNING "hda_codec: "
 206                                            "invalid dep_range_val %x:%x\n",
 207                                            prev_nid, val);
 208                                 continue;
 209                         }
 210                         for (n = prev_nid + 1; n <= val; n++) {
 211                                 if (conns >= max_conns) {
 212                                         snd_printk(KERN_ERR
 213                                                    "Too many connections\n");
 214                                         return -EINVAL;
 215                                 }
 216                                 conn_list[conns++] = n;
 217                         }
 218                 } else {
 219                         if (conns >= max_conns) {
 220                                 snd_printk(KERN_ERR "Too many connections\n");
 221                                 return -EINVAL;
 222                         }
 223                         conn_list[conns++] = val;
 224                 }
 225                 prev_nid = val;
 226         }
 227         return conns;
 228 }
 229
 230
 231 /**
 232  * snd_hda_queue_unsol_event - add an unsolicited event to queue
 233  * @bus: the BUS
 234  * @res: unsolicited event (lower 32bit of RIRB entry)
 235  * @res_ex: codec addr and flags (upper 32bit or RIRB entry)
 236  *
 237  * Adds the given event to the queue.  The events are processed in
 238  * the workqueue asynchronously.  Call this function in the interrupt
 239  * hanlder when RIRB receives an unsolicited event.
 240  *
 241  * Returns 0 if successful, or a negative error code.
 242  */
 243 int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex)
 244 {
 245         struct hda_bus_unsolicited *unsol;
 246         unsigned int wp;
 247
 248         unsol = bus->unsol;
 249         if (!unsol)
 250                 return 0;
 251
 252         wp = (unsol->wp + 1) % HDA_UNSOL_QUEUE_SIZE;
 253         unsol->wp = wp;
 254
 255         wp <<= 1;
 256         unsol->queue[wp] = res;
 257         unsol->queue[wp + 1] = res_ex;
 258
 259         schedule_work(&unsol->work);
 260
 261         return 0;
 262 }
 263
 264 /*
 265  * process queueud unsolicited events
 266  */
 267 static void process_unsol_events(struct work_struct *work)
 268 {
 269         struct hda_bus_unsolicited *unsol =
 270                 container_of(work, struct hda_bus_unsolicited, work);
 271         struct hda_bus *bus = unsol->bus;
 272         struct hda_codec *codec;
 273         unsigned int rp, caddr, res;
 274
 275         while (unsol->rp != unsol->wp) {
 276                 rp = (unsol->rp + 1) % HDA_UNSOL_QUEUE_SIZE;
 277                 unsol->rp = rp;
 278                 rp <<= 1;
 279                 res = unsol->queue[rp];
 280                 caddr = unsol->queue[rp + 1];
 281                 if (!(caddr & (1 << 4))) /* no unsolicited event? */
 282                         continue;
 283                 codec = bus->caddr_tbl[caddr & 0x0f];
 284                 if (codec && codec->patch_ops.unsol_event)
 285                         codec->patch_ops.unsol_event(codec, res);
 286         }
 287 }
 288
 289 /*
 290  * initialize unsolicited queue
 291  */
 292 static int __devinit init_unsol_queue(struct hda_bus *bus)
 293 {
 294         struct hda_bus_unsolicited *unsol;
 295
 296         if (bus->unsol) /* already initialized */
 297                 return 0;
 298
 299         unsol = kzalloc(sizeof(*unsol), GFP_KERNEL);
 300         if (!unsol) {
 301                 snd_printk(KERN_ERR "hda_codec: "
 302                            "can't allocate unsolicited queue\n");
 303                 return -ENOMEM;
 304         }
 305         INIT_WORK(&unsol->work, process_unsol_events);
 306         unsol->bus = bus;
 307         bus->unsol = unsol;
 308         return 0;
 309 }
 310
 311 /*
 312  * destructor
 313  */
 314 static void snd_hda_codec_free(struct hda_codec *codec);
 315
 316 static int snd_hda_bus_free(struct hda_bus *bus)
 317 {
 318         struct hda_codec *codec, *n;
 319
 320         if (!bus)
 321                 return 0;
 322         if (bus->unsol) {
 323                 flush_scheduled_work();
 324                 kfree(bus->unsol);
 325         }
 326         list_for_each_entry_safe(codec, n, &bus->codec_list, list) {
 327                 snd_hda_codec_free(codec);
 328         }
 329         if (bus->ops.private_free)
 330                 bus->ops.private_free(bus);
 331         kfree(bus);
 332         return 0;
 333 }
 334
 335 static int snd_hda_bus_dev_free(struct snd_device *device)
 336 {
 337         struct hda_bus *bus = device->device_data;
 338         return snd_hda_bus_free(bus);
 339 }
 340
 341 /**
 342  * snd_hda_bus_new - create a HDA bus
 343  * @card: the card entry
 344  * @temp: the template for hda_bus information
 345  * @busp: the pointer to store the created bus instance
 346  *
 347  * Returns 0 if successful, or a negative error code.
 348  */
 349 int __devinit snd_hda_bus_new(struct snd_card *card,
 350                               const struct hda_bus_template *temp,
 351                               struct hda_bus **busp)
 352 {
 353         struct hda_bus *bus;
 354         int err;
 355         static struct snd_device_ops dev_ops = {
 356                 .dev_free = snd_hda_bus_dev_free,
 357         };
 358
 359         snd_assert(temp, return -EINVAL);
 360         snd_assert(temp->ops.command && temp->ops.get_response, return -EINVAL);
 361
 362         if (busp)
 363                 *busp = NULL;
 364
 365         bus = kzalloc(sizeof(*bus), GFP_KERNEL);
 366         if (bus == NULL) {
 367                 snd_printk(KERN_ERR "can't allocate struct hda_bus\n");
 368                 return -ENOMEM;
 369         }
 370
 371         bus->card = card;
 372         bus->private_data = temp->private_data;
 373         bus->pci = temp->pci;
 374         bus->modelname = temp->modelname;
 375         bus->ops = temp->ops;
 376
 377         mutex_init(&bus->cmd_mutex);
 378         INIT_LIST_HEAD(&bus->codec_list);
 379
 380         err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops);
 381         if (err < 0) {
 382                 snd_hda_bus_free(bus);
 383                 return err;
 384         }
 385         if (busp)
 386                 *busp = bus;
 387         return 0;
 388 }
 389
 390 /*
 391  * find a matching codec preset
 392  */
 393 static const struct hda_codec_preset __devinit *
 394 find_codec_preset(struct hda_codec *codec)
 395 {
 396         const struct hda_codec_preset **tbl, *preset;
 397
 398         if (codec->bus->modelname && !strcmp(codec->bus->modelname, "generic"))
 399                 return NULL; /* use the generic parser */
 400
 401         for (tbl = hda_preset_tables; *tbl; tbl++) {
 402                 for (preset = *tbl; preset->id; preset++) {
 403                         u32 mask = preset->mask;
 404                         if (!mask)
 405                                 mask = ~0;
 406                         if (preset->id == (codec->vendor_id & mask) &&
 407                             (!preset->rev ||
 408                              preset->rev == codec->revision_id))
 409                                 return preset;
 410                 }
 411         }
 412         return NULL;
 413 }
 414
 415 /*
 416  * snd_hda_get_codec_name - store the codec name
 417  */
 418 void snd_hda_get_codec_name(struct hda_codec *codec,
 419                             char *name, int namelen)
 420 {
 421         const struct hda_vendor_id *c;
 422         const char *vendor = NULL;
 423         u16 vendor_id = codec->vendor_id >> 16;
 424         char tmp[16];
 425
 426         for (c = hda_vendor_ids; c->id; c++) {
 427                 if (c->id == vendor_id) {
 428                         vendor = c->name;
 429                         break;
 430                 }
 431         }
 432         if (!vendor) {
 433                 sprintf(tmp, "Generic %04x", vendor_id);
 434                 vendor = tmp;
 435         }
 436         if (codec->preset && codec->preset->name)
 437                 snprintf(name, namelen, "%s %s", vendor, codec->preset->name);
 438         else
 439                 snprintf(name, namelen, "%s ID %x", vendor,
 440                          codec->vendor_id & 0xffff);
 441 }
 442
 443 /*
 444  * look for an AFG and MFG nodes
 445  */
 446 static void __devinit setup_fg_nodes(struct hda_codec *codec)
 447 {
 448         int i, total_nodes;
 449         hda_nid_t nid;
 450
 451         total_nodes = snd_hda_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
 452         for (i = 0; i < total_nodes; i++, nid++) {
 453                 unsigned int func;
 454                 func = snd_hda_param_read(codec, nid, AC_PAR_FUNCTION_TYPE);
 455                 switch (func & 0xff) {
 456                 case AC_GRP_AUDIO_FUNCTION:
 457                         codec->afg = nid;
 458                         break;
 459                 case AC_GRP_MODEM_FUNCTION:
 460                         codec->mfg = nid;
 461                         break;
 462                 default:
 463                         break;
 464                 }
 465         }
 466 }
 467
 468 /*
 469  * read widget caps for each widget and store in cache
 470  */
 471 static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
 472 {
 473         int i;
 474         hda_nid_t nid;
 475
 476         codec->num_nodes = snd_hda_get_sub_nodes(codec, fg_node,
 477                                                  &codec->start_nid);
 478         codec->wcaps = kmalloc(codec->num_nodes * 4, GFP_KERNEL);
 479         if (!codec->wcaps)
 480                 return -ENOMEM;
 481         nid = codec->start_nid;
 482         for (i = 0; i < codec->num_nodes; i++, nid++)
 483                 codec->wcaps[i] = snd_hda_param_read(codec, nid,
 484                                                      AC_PAR_AUDIO_WIDGET_CAP);
 485         return 0;
 486 }
 487
 488
 489 /*
 490  * codec destructor
 491  */
 492 static void snd_hda_codec_free(struct hda_codec *codec)
 493 {
 494         if (!codec)
 495                 return;
 496         list_del(&codec->list);
 497         codec->bus->caddr_tbl[codec->addr] = NULL;
 498         if (codec->patch_ops.free)
 499                 codec->patch_ops.free(codec);
 500         kfree(codec->amp_info);
 501         kfree(codec->wcaps);
 502         kfree(codec);
 503 }
 504
 505 static void init_amp_hash(struct hda_codec *codec);
 506
 507 /**
 508  * snd_hda_codec_new - create a HDA codec
 509  * @bus: the bus to assign
 510  * @codec_addr: the codec address
 511  * @codecp: the pointer to store the generated codec
 512  *
 513  * Returns 0 if successful, or a negative error code.
 514  */
 515 int __devinit snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
 516                                 struct hda_codec **codecp)
 517 {
 518         struct hda_codec *codec;
 519         char component[13];
 520         int err;
 521
 522         snd_assert(bus, return -EINVAL);
 523         snd_assert(codec_addr <= HDA_MAX_CODEC_ADDRESS, return -EINVAL);
 524
 525         if (bus->caddr_tbl[codec_addr]) {
 526                 snd_printk(KERN_ERR "hda_codec: "
 527                            "address 0x%x is already occupied\n", codec_addr);
 528                 return -EBUSY;
 529         }
 530
 531         codec = kzalloc(sizeof(*codec), GFP_KERNEL);
 532         if (codec == NULL) {
 533                 snd_printk(KERN_ERR "can't allocate struct hda_codec\n");
 534                 return -ENOMEM;
 535         }
 536
 537         codec->bus = bus;
 538         codec->addr = codec_addr;
 539         mutex_init(&codec->spdif_mutex);
 540         init_amp_hash(codec);
 541
 542         list_add_tail(&codec->list, &bus->codec_list);
 543         bus->caddr_tbl[codec_addr] = codec;
 544
 545         codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT,
 546                                               AC_PAR_VENDOR_ID);
 547         if (codec->vendor_id == -1)
 548                 /* read again, hopefully the access method was corrected
 549                  * in the last read...
 550                  */
 551                 codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT,
 552                                                       AC_PAR_VENDOR_ID);
 553         codec->subsystem_id = snd_hda_param_read(codec, AC_NODE_ROOT,
 554                                                  AC_PAR_SUBSYSTEM_ID);
 555         codec->revision_id = snd_hda_param_read(codec, AC_NODE_ROOT,
 556                                                 AC_PAR_REV_ID);
 557
 558         setup_fg_nodes(codec);
 559         if (!codec->afg && !codec->mfg) {
 560                 snd_printdd("hda_codec: no AFG or MFG node found\n");
 561                 snd_hda_codec_free(codec);
 562                 return -ENODEV;
 563         }
 564
 565         if (read_widget_caps(codec, codec->afg ? codec->afg : codec->mfg) < 0) {
 566                 snd_printk(KERN_ERR "hda_codec: cannot malloc\n");
 567                 snd_hda_codec_free(codec);
 568                 return -ENOMEM;
 569         }
 570
 571         if (!codec->subsystem_id) {
 572                 hda_nid_t nid = codec->afg ? codec->afg : codec->mfg;
 573                 codec->subsystem_id =
 574                         snd_hda_codec_read(codec, nid, 0,
 575                                            AC_VERB_GET_SUBSYSTEM_ID, 0);
 576         }
 577
 578         codec->preset = find_codec_preset(codec);
 579         /* audio codec should override the mixer name */
 580         if (codec->afg || !*bus->card->mixername)
 581                 snd_hda_get_codec_name(codec, bus->card->mixername,
 582                                        sizeof(bus->card->mixername));
 583
 584         if (codec->preset && codec->preset->patch)
 585                 err = codec->preset->patch(codec);
 586         else
 587                 err = snd_hda_parse_generic_codec(codec);
 588         if (err < 0) {
 589                 snd_hda_codec_free(codec);
 590                 return err;
 591         }
 592
 593         if (codec->patch_ops.unsol_event)
 594                 init_unsol_queue(bus);
 595
 596         snd_hda_codec_proc_new(codec);
 597
 598         sprintf(component, "HDA:%08x", codec->vendor_id);
 599         snd_component_add(codec->bus->card, component);
 600
 601         if (codecp)
 602                 *codecp = codec;
 603         return 0;
 604 }
 605
 606 /**
 607  * snd_hda_codec_setup_stream - set up the codec for streaming
 608  * @codec: the CODEC to set up
 609  * @nid: the NID to set up
 610  * @stream_tag: stream tag to pass, it's between 0x1 and 0xf.
 611  * @channel_id: channel id to pass, zero based.
 612  * @format: stream format.
 613  */
 614 void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
 615                                 u32 stream_tag,
 616                                 int channel_id, int format)
 617 {
 618         if (!nid)
 619                 return;
 620
 621         snd_printdd("hda_codec_setup_stream: "
 622                     "NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
 623                     nid, stream_tag, channel_id, format);
 624         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID,
 625                             (stream_tag << 4) | channel_id);
 626         msleep(1);
 627         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, format);
 628 }
 629
 630 /*
 631  * amp access functions
 632  */
 633
 634 /* FIXME: more better hash key? */
 635 #define HDA_HASH_KEY(nid,dir,idx) (u32)((nid) + ((idx) << 16) + ((dir) << 24))
 636 #define INFO_AMP_CAPS   (1<<0)
 637 #define INFO_AMP_VOL(ch)        (1 << (1 + (ch)))
 638
 639 /* initialize the hash table */
 640 static void __devinit init_amp_hash(struct hda_codec *codec)
 641 {
 642         memset(codec->amp_hash, 0xff, sizeof(codec->amp_hash));
 643         codec->num_amp_entries = 0;
 644         codec->amp_info_size = 0;
 645         codec->amp_info = NULL;
 646 }
 647
 648 /* query the hash.  allocate an entry if not found. */
 649 static struct hda_amp_info *get_alloc_amp_hash(struct hda_codec *codec, u32 key)
 650 {
 651         u16 idx = key % (u16)ARRAY_SIZE(codec->amp_hash);
 652         u16 cur = codec->amp_hash[idx];
 653         struct hda_amp_info *info;
 654
 655         while (cur != 0xffff) {
 656                 info = &codec->amp_info[cur];
 657                 if (info->key == key)
 658                         return info;
 659                 cur = info->next;
 660         }
 661
 662         /* add a new hash entry */
 663         if (codec->num_amp_entries >= codec->amp_info_size) {
 664                 /* reallocate the array */
 665                 int new_size = codec->amp_info_size + 64;
 666                 struct hda_amp_info *new_info;
 667                 new_info = kcalloc(new_size, sizeof(struct hda_amp_info),
 668                                    GFP_KERNEL);
 669                 if (!new_info) {
 670                         snd_printk(KERN_ERR "hda_codec: "
 671                                    "can't malloc amp_info\n");
 672                         return NULL;
 673                 }
 674                 if (codec->amp_info) {
 675                         memcpy(new_info, codec->amp_info,
 676                                codec->amp_info_size *
 677                                sizeof(struct hda_amp_info));
 678                         kfree(codec->amp_info);
 679                 }
 680                 codec->amp_info_size = new_size;
 681                 codec->amp_info = new_info;
 682         }
 683         cur = codec->num_amp_entries++;
 684         info = &codec->amp_info[cur];
 685         info->key = key;
 686         info->status = 0; /* not initialized yet */
 687         info->next = codec->amp_hash[idx];
 688         codec->amp_hash[idx] = cur;
 689
 690         return info;
 691 }
 692
 693 /*
 694  * query AMP capabilities for the given widget and direction
 695  */
 696 static u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
 697 {
 698         struct hda_amp_info *info;
 699
 700         info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, 0));
 701         if (!info)
 702                 return 0;
 703         if (!(info->status & INFO_AMP_CAPS)) {
 704                 if (!(get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD))
 705                         nid = codec->afg;
 706                 info->amp_caps = snd_hda_param_read(codec, nid,
 707                                                     direction == HDA_OUTPUT ?
 708                                                     AC_PAR_AMP_OUT_CAP :
 709                                                     AC_PAR_AMP_IN_CAP);
 710                 if (info->amp_caps)
 711                         info->status |= INFO_AMP_CAPS;
 712         }
 713         return info->amp_caps;
 714 }
 715
 716 /*
 717  * read the current volume to info
 718  * if the cache exists, read the cache value.
 719  */
 720 static unsigned int get_vol_mute(struct hda_codec *codec,
 721                                  struct hda_amp_info *info, hda_nid_t nid,
 722                                  int ch, int direction, int index)
 723 {
 724         u32 val, parm;
 725
 726         if (info->status & INFO_AMP_VOL(ch))
 727                 return info->vol[ch];
 728
 729         parm = ch ? AC_AMP_GET_RIGHT : AC_AMP_GET_LEFT;
 730         parm |= direction == HDA_OUTPUT ? AC_AMP_GET_OUTPUT : AC_AMP_GET_INPUT;
 731         parm |= index;
 732         val = snd_hda_codec_read(codec, nid, 0,
 733                                  AC_VERB_GET_AMP_GAIN_MUTE, parm);
 734         info->vol[ch] = val & 0xff;
 735         info->status |= INFO_AMP_VOL(ch);
 736         return info->vol[ch];
 737 }
 738
 739 /*
 740  * write the current volume in info to the h/w and update the cache
 741  */
 742 static void put_vol_mute(struct hda_codec *codec, struct hda_amp_info *info,
 743                          hda_nid_t nid, int ch, int direction, int index,
 744                          int val)
 745 {
 746         u32 parm;
 747
 748         parm = ch ? AC_AMP_SET_RIGHT : AC_AMP_SET_LEFT;
 749         parm |= direction == HDA_OUTPUT ? AC_AMP_SET_OUTPUT : AC_AMP_SET_INPUT;
 750         parm |= index << AC_AMP_SET_INDEX_SHIFT;
 751         parm |= val;
 752         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, parm);
 753         info->vol[ch] = val;
 754 }
 755
 756 /*
 757  * read AMP value.  The volume is between 0 to 0x7f, 0x80 = mute bit.
 758  */
 759 int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch,
 760                            int direction, int index)
 761 {
 762         struct hda_amp_info *info;
 763         info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, index));
 764         if (!info)
 765                 return 0;
 766         return get_vol_mute(codec, info, nid, ch, direction, index);
 767 }
 768
 769 /*
 770  * update the AMP value, mask = bit mask to set, val = the value
 771  */
 772 int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
 773                              int direction, int idx, int mask, int val)
 774 {
 775         struct hda_amp_info *info;
 776
 777         info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, idx));
 778         if (!info)
 779                 return 0;
 780         val &= mask;
 781         val |= get_vol_mute(codec, info, nid, ch, direction, idx) & ~mask;
 782         if (info->vol[ch] == val && !codec->in_resume)
 783                 return 0;
 784         put_vol_mute(codec, info, nid, ch, direction, idx, val);
 785         return 1;
 786 }
 787
 788
 789 /*
 790  * AMP control callbacks
 791  */
 792 /* retrieve parameters from private_value */
 793 #define get_amp_nid(kc)         ((kc)->private_value & 0xffff)
 794 #define get_amp_channels(kc)    (((kc)->private_value >> 16) & 0x3)
 795 #define get_amp_direction(kc)   (((kc)->private_value >> 18) & 0x1)
 796 #define get_amp_index(kc)       (((kc)->private_value >> 19) & 0xf)
 797
 798 /* volume */
 799 int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
 800                                   struct snd_ctl_elem_info *uinfo)
 801 {
 802         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 803         u16 nid = get_amp_nid(kcontrol);
 804         u8 chs = get_amp_channels(kcontrol);
 805         int dir = get_amp_direction(kcontrol);
 806         u32 caps;
 807
 808         caps = query_amp_caps(codec, nid, dir);
 809         /* num steps */
 810         caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
 811         if (!caps) {
 812                 printk(KERN_WARNING "hda_codec: "
 813                        "num_steps = 0 for NID=0x%x\n", nid);
 814                 return -EINVAL;
 815         }
 816         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 817         uinfo->count = chs == 3 ? 2 : 1;
 818         uinfo->value.integer.min = 0;
 819         uinfo->value.integer.max = caps;
 820         return 0;
 821 }
 822
 823 int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
 824                                  struct snd_ctl_elem_value *ucontrol)
 825 {
 826         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 827         hda_nid_t nid = get_amp_nid(kcontrol);
 828         int chs = get_amp_channels(kcontrol);
 829         int dir = get_amp_direction(kcontrol);
 830         int idx = get_amp_index(kcontrol);
 831         long *valp = ucontrol->value.integer.value;
 832
 833         if (chs & 1)
 834                 *valp++ = snd_hda_codec_amp_read(codec, nid, 0, dir, idx) & 0x7f;
 835         if (chs & 2)
 836                 *valp = snd_hda_codec_amp_read(codec, nid, 1, dir, idx) & 0x7f;
 837         return 0;
 838 }
 839
 840 int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
 841                                  struct snd_ctl_elem_value *ucontrol)
 842 {
 843         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 844         hda_nid_t nid = get_amp_nid(kcontrol);
 845         int chs = get_amp_channels(kcontrol);
 846         int dir = get_amp_direction(kcontrol);
 847         int idx = get_amp_index(kcontrol);
 848         long *valp = ucontrol->value.integer.value;
 849         int change = 0;
 850
 851         if (chs & 1) {
 852                 change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
 853                                                   0x7f, *valp);
 854                 valp++;
 855         }
 856         if (chs & 2)
 857                 change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
 858                                                    0x7f, *valp);
 859         return change;
 860 }
 861
 862 int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
 863                           unsigned int size, unsigned int __user *_tlv)
 864 {
 865         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 866         hda_nid_t nid = get_amp_nid(kcontrol);
 867         int dir = get_amp_direction(kcontrol);
 868         u32 caps, val1, val2;
 869
 870         if (size < 4 * sizeof(unsigned int))
 871                 return -ENOMEM;
 872         caps = query_amp_caps(codec, nid, dir);
 873         val2 = (caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT;
 874         val2 = (val2 + 1) * 25;
 875         val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT);
 876         val1 = ((int)val1) * ((int)val2);
 877         if (put_user(SNDRV_CTL_TLVT_DB_SCALE, _tlv))
 878                 return -EFAULT;
 879         if (put_user(2 * sizeof(unsigned int), _tlv + 1))
 880                 return -EFAULT;
 881         if (put_user(val1, _tlv + 2))
 882                 return -EFAULT;
 883         if (put_user(val2, _tlv + 3))
 884                 return -EFAULT;
 885         return 0;
 886 }
 887
 888 /* switch */
 889 int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
 890                                   struct snd_ctl_elem_info *uinfo)
 891 {
 892         int chs = get_amp_channels(kcontrol);
 893
 894         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 895         uinfo->count = chs == 3 ? 2 : 1;
 896         uinfo->value.integer.min = 0;
 897         uinfo->value.integer.max = 1;
 898         return 0;
 899 }
 900
 901 int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
 902                                  struct snd_ctl_elem_value *ucontrol)
 903 {
 904         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 905         hda_nid_t nid = get_amp_nid(kcontrol);
 906         int chs = get_amp_channels(kcontrol);
 907         int dir = get_amp_direction(kcontrol);
 908         int idx = get_amp_index(kcontrol);
 909         long *valp = ucontrol->value.integer.value;
 910
 911         if (chs & 1)
 912                 *valp++ = (snd_hda_codec_amp_read(codec, nid, 0, dir, idx) &
 913                            0x80) ? 0 : 1;
 914         if (chs & 2)
 915                 *valp = (snd_hda_codec_amp_read(codec, nid, 1, dir, idx) &
 916                          0x80) ? 0 : 1;
 917         return 0;
 918 }
 919
 920 int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
 921                                  struct snd_ctl_elem_value *ucontrol)
 922 {
 923         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 924         hda_nid_t nid = get_amp_nid(kcontrol);
 925         int chs = get_amp_channels(kcontrol);
 926         int dir = get_amp_direction(kcontrol);
 927         int idx = get_amp_index(kcontrol);
 928         long *valp = ucontrol->value.integer.value;
 929         int change = 0;
 930
 931         if (chs & 1) {
 932                 change = snd_hda_codec_amp_update(codec, nid, 0, dir, idx,
 933                                                   0x80, *valp ? 0 : 0x80);
 934                 valp++;
 935         }
 936         if (chs & 2)
 937                 change |= snd_hda_codec_amp_update(codec, nid, 1, dir, idx,
 938                                                    0x80, *valp ? 0 : 0x80);
 939
 940         return change;
 941 }
 942
 943 /*
 944  * bound volume controls
 945  *
 946  * bind multiple volumes (# indices, from 0)
 947  */
 948
 949 #define AMP_VAL_IDX_SHIFT       19
 950 #define AMP_VAL_IDX_MASK        (0x0f<<19)
 951
 952 int snd_hda_mixer_bind_switch_get(struct snd_kcontrol *kcontrol,
 953                                   struct snd_ctl_elem_value *ucontrol)
 954 {
 955         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 956         unsigned long pval;
 957         int err;
 958
 959         mutex_lock(&codec->spdif_mutex); /* reuse spdif_mutex */
 960         pval = kcontrol->private_value;
 961         kcontrol->private_value = pval & ~AMP_VAL_IDX_MASK; /* index 0 */
 962         err = snd_hda_mixer_amp_switch_get(kcontrol, ucontrol);
 963         kcontrol->private_value = pval;
 964         mutex_unlock(&codec->spdif_mutex);
 965         return err;
 966 }
 967
 968 int snd_hda_mixer_bind_switch_put(struct snd_kcontrol *kcontrol,
 969                                   struct snd_ctl_elem_value *ucontrol)
 970 {
 971         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 972         unsigned long pval;
 973         int i, indices, err = 0, change = 0;
 974
 975         mutex_lock(&codec->spdif_mutex); /* reuse spdif_mutex */
 976         pval = kcontrol->private_value;
 977         indices = (pval & AMP_VAL_IDX_MASK) >> AMP_VAL_IDX_SHIFT;
 978         for (i = 0; i < indices; i++) {
 979                 kcontrol->private_value = (pval & ~AMP_VAL_IDX_MASK) |
 980                         (i << AMP_VAL_IDX_SHIFT);
 981                 err = snd_hda_mixer_amp_switch_put(kcontrol, ucontrol);
 982                 if (err < 0)
 983                         break;
 984                 change |= err;
 985         }
 986         kcontrol->private_value = pval;
 987         mutex_unlock(&codec->spdif_mutex);
 988         return err < 0 ? err : change;
 989 }
 990
 991 /*
 992  * SPDIF out controls
 993  */
 994
 995 static int snd_hda_spdif_mask_info(struct snd_kcontrol *kcontrol,
 996                                    struct snd_ctl_elem_info *uinfo)
 997 {
 998         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 999         uinfo->count = 1;
1000         return 0;
1001 }
1002
1003 static int snd_hda_spdif_cmask_get(struct snd_kcontrol *kcontrol,
1004                                    struct snd_ctl_elem_value *ucontrol)
1005 {
1006         ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
1007                                            IEC958_AES0_NONAUDIO |
1008                                            IEC958_AES0_CON_EMPHASIS_5015 |
1009                                            IEC958_AES0_CON_NOT_COPYRIGHT;
1010         ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY |
1011                                            IEC958_AES1_CON_ORIGINAL;
1012         return 0;
1013 }
1014
1015 static int snd_hda_spdif_pmask_get(struct snd_kcontrol *kcontrol,
1016                                    struct snd_ctl_elem_value *ucontrol)
1017 {
1018         ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
1019                                            IEC958_AES0_NONAUDIO |
1020                                            IEC958_AES0_PRO_EMPHASIS_5015;
1021         return 0;
1022 }
1023
1024 static int snd_hda_spdif_default_get(struct snd_kcontrol *kcontrol,
1025                                      struct snd_ctl_elem_value *ucontrol)
1026 {
1027         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1028
1029         ucontrol->value.iec958.status[0] = codec->spdif_status & 0xff;
1030         ucontrol->value.iec958.status[1] = (codec->spdif_status >> 8) & 0xff;
1031         ucontrol->value.iec958.status[2] = (codec->spdif_status >> 16) & 0xff;
1032         ucontrol->value.iec958.status[3] = (codec->spdif_status >> 24) & 0xff;
1033
1034         return 0;
1035 }
1036
1037 /* convert from SPDIF status bits to HDA SPDIF bits
1038  * bit 0 (DigEn) is always set zero (to be filled later)
1039  */
1040 static unsigned short convert_from_spdif_status(unsigned int sbits)
1041 {
1042         unsigned short val = 0;
1043
1044         if (sbits & IEC958_AES0_PROFESSIONAL)
1045                 val |= AC_DIG1_PROFESSIONAL;
1046         if (sbits & IEC958_AES0_NONAUDIO)
1047                 val |= AC_DIG1_NONAUDIO;
1048         if (sbits & IEC958_AES0_PROFESSIONAL) {
1049                 if ((sbits & IEC958_AES0_PRO_EMPHASIS) ==
1050                     IEC958_AES0_PRO_EMPHASIS_5015)
1051                         val |= AC_DIG1_EMPHASIS;
1052         } else {
1053                 if ((sbits & IEC958_AES0_CON_EMPHASIS) ==
1054                     IEC958_AES0_CON_EMPHASIS_5015)
1055                         val |= AC_DIG1_EMPHASIS;
1056                 if (!(sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
1057                         val |= AC_DIG1_COPYRIGHT;
1058                 if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
1059                         val |= AC_DIG1_LEVEL;
1060                 val |= sbits & (IEC958_AES1_CON_CATEGORY << 8);
1061         }
1062         return val;
1063 }
1064
1065 /* convert to SPDIF status bits from HDA SPDIF bits
1066  */
1067 static unsigned int convert_to_spdif_status(unsigned short val)
1068 {
1069         unsigned int sbits = 0;
1070
1071         if (val & AC_DIG1_NONAUDIO)
1072                 sbits |= IEC958_AES0_NONAUDIO;
1073         if (val & AC_DIG1_PROFESSIONAL)
1074                 sbits |= IEC958_AES0_PROFESSIONAL;
1075         if (sbits & IEC958_AES0_PROFESSIONAL) {
1076                 if (sbits & AC_DIG1_EMPHASIS)
1077                         sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
1078         } else {
1079                 if (val & AC_DIG1_EMPHASIS)
1080                         sbits |= IEC958_AES0_CON_EMPHASIS_5015;
1081                 if (!(val & AC_DIG1_COPYRIGHT))
1082                         sbits |= IEC958_AES0_CON_NOT_COPYRIGHT;
1083                 if (val & AC_DIG1_LEVEL)
1084                         sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
1085                 sbits |= val & (0x7f << 8);
1086         }
1087         return sbits;
1088 }
1089
1090 static int snd_hda_spdif_default_put(struct snd_kcontrol *kcontrol,
1091                                      struct snd_ctl_elem_value *ucontrol)
1092 {
1093         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1094         hda_nid_t nid = kcontrol->private_value;
1095         unsigned short val;
1096         int change;
1097
1098         mutex_lock(&codec->spdif_mutex);
1099         codec->spdif_status = ucontrol->value.iec958.status[0] |
1100                 ((unsigned int)ucontrol->value.iec958.status[1] << 8) |
1101                 ((unsigned int)ucontrol->value.iec958.status[2] << 16) |
1102                 ((unsigned int)ucontrol->value.iec958.status[3] << 24);
1103         val = convert_from_spdif_status(codec->spdif_status);
1104         val |= codec->spdif_ctls & 1;
1105         change = codec->spdif_ctls != val;
1106         codec->spdif_ctls = val;
1107
1108         if (change || codec->in_resume) {
1109                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
1110                                     val & 0xff);
1111                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_2,
1112                                     val >> 8);
1113         }
1114
1115         mutex_unlock(&codec->spdif_mutex);
1116         return change;
1117 }
1118
1119 static int snd_hda_spdif_out_switch_info(struct snd_kcontrol *kcontrol,
1120                                          struct snd_ctl_elem_info *uinfo)
1121 {
1122         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1123         uinfo->count = 1;
1124         uinfo->value.integer.min = 0;
1125         uinfo->value.integer.max = 1;
1126         return 0;
1127 }
1128
1129 static int snd_hda_spdif_out_switch_get(struct snd_kcontrol *kcontrol,
1130                                         struct snd_ctl_elem_value *ucontrol)
1131 {
1132         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1133
1134         ucontrol->value.integer.value[0] = codec->spdif_ctls & AC_DIG1_ENABLE;
1135         return 0;
1136 }
1137
1138 static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol,
1139                                         struct snd_ctl_elem_value *ucontrol)
1140 {
1141         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1142         hda_nid_t nid = kcontrol->private_value;
1143         unsigned short val;
1144         int change;
1145
1146         mutex_lock(&codec->spdif_mutex);
1147         val = codec->spdif_ctls & ~AC_DIG1_ENABLE;
1148         if (ucontrol->value.integer.value[0])
1149                 val |= AC_DIG1_ENABLE;
1150         change = codec->spdif_ctls != val;
1151         if (change || codec->in_resume) {
1152                 codec->spdif_ctls = val;
1153                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
1154                                     val & 0xff);
1155                 /* unmute amp switch (if any) */
1156                 if ((get_wcaps(codec, nid) & AC_WCAP_OUT_AMP) &&
1157                     (val & AC_DIG1_ENABLE))
1158                         snd_hda_codec_write(codec, nid, 0,
1159                                             AC_VERB_SET_AMP_GAIN_MUTE,
1160                                             AC_AMP_SET_RIGHT | AC_AMP_SET_LEFT |
1161                                             AC_AMP_SET_OUTPUT);
1162         }
1163         mutex_unlock(&codec->spdif_mutex);
1164         return change;
1165 }
1166
1167 static struct snd_kcontrol_new dig_mixes[] = {
1168         {
1169                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1170                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1171                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
1172                 .info = snd_hda_spdif_mask_info,
1173                 .get = snd_hda_spdif_cmask_get,
1174         },
1175         {
1176                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1177                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1178                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
1179                 .info = snd_hda_spdif_mask_info,
1180                 .get = snd_hda_spdif_pmask_get,
1181         },
1182         {
1183                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1184                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1185                 .info = snd_hda_spdif_mask_info,
1186                 .get = snd_hda_spdif_default_get,
1187                 .put = snd_hda_spdif_default_put,
1188         },
1189         {
1190                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1191                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH),
1192                 .info = snd_hda_spdif_out_switch_info,
1193                 .get = snd_hda_spdif_out_switch_get,
1194                 .put = snd_hda_spdif_out_switch_put,
1195         },
1196         { } /* end */
1197 };
1198
1199 /**
1200  * snd_hda_create_spdif_out_ctls - create Output SPDIF-related controls
1201  * @codec: the HDA codec
1202  * @nid: audio out widget NID
1203  *
1204  * Creates controls related with the SPDIF output.
1205  * Called from each patch supporting the SPDIF out.
1206  *
1207  * Returns 0 if successful, or a negative error code.
1208  */
1209 int __devinit snd_hda_create_spdif_out_ctls(struct hda_codec *codec,
1210                                             hda_nid_t nid)
1211 {
1212         int err;
1213         struct snd_kcontrol *kctl;
1214         struct snd_kcontrol_new *dig_mix;
1215
1216         for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
1217                 kctl = snd_ctl_new1(dig_mix, codec);
1218                 kctl->private_value = nid;
1219                 err = snd_ctl_add(codec->bus->card, kctl);
1220                 if (err < 0)
1221                         return err;
1222         }
1223         codec->spdif_ctls =
1224                 snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0);
1225         codec->spdif_status = convert_to_spdif_status(codec->spdif_ctls);
1226         return 0;
1227 }
1228
1229 /*
1230  * SPDIF input
1231  */
1232
1233 #define snd_hda_spdif_in_switch_info    snd_hda_spdif_out_switch_info
1234
1235 static int snd_hda_spdif_in_switch_get(struct snd_kcontrol *kcontrol,
1236                                        struct snd_ctl_elem_value *ucontrol)
1237 {
1238         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1239
1240         ucontrol->value.integer.value[0] = codec->spdif_in_enable;
1241         return 0;
1242 }
1243
1244 static int snd_hda_spdif_in_switch_put(struct snd_kcontrol *kcontrol,
1245                                        struct snd_ctl_elem_value *ucontrol)
1246 {
1247         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1248         hda_nid_t nid = kcontrol->private_value;
1249         unsigned int val = !!ucontrol->value.integer.value[0];
1250         int change;
1251
1252         mutex_lock(&codec->spdif_mutex);
1253         change = codec->spdif_in_enable != val;
1254         if (change || codec->in_resume) {
1255                 codec->spdif_in_enable = val;
1256                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
1257                                     val);
1258         }
1259         mutex_unlock(&codec->spdif_mutex);
1260         return change;
1261 }
1262
1263 static int snd_hda_spdif_in_status_get(struct snd_kcontrol *kcontrol,
1264                                        struct snd_ctl_elem_value *ucontrol)
1265 {
1266         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
1267         hda_nid_t nid = kcontrol->private_value;
1268         unsigned short val;
1269         unsigned int sbits;
1270
1271         val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0);
1272         sbits = convert_to_spdif_status(val);
1273         ucontrol->value.iec958.status[0] = sbits;
1274         ucontrol->value.iec958.status[1] = sbits >> 8;
1275         ucontrol->value.iec958.status[2] = sbits >> 16;
1276         ucontrol->value.iec958.status[3] = sbits >> 24;
1277         return 0;
1278 }
1279
1280 static struct snd_kcontrol_new dig_in_ctls[] = {
1281         {
1282                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1283                 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH),
1284                 .info = snd_hda_spdif_in_switch_info,
1285                 .get = snd_hda_spdif_in_switch_get,
1286                 .put = snd_hda_spdif_in_switch_put,
1287         },
1288         {
1289                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1290                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1291                 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
1292                 .info = snd_hda_spdif_mask_info,
1293                 .get = snd_hda_spdif_in_status_get,
1294         },
1295         { } /* end */
1296 };
1297
1298 /**
1299  * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls
1300  * @codec: the HDA codec
1301  * @nid: audio in widget NID
1302  *
1303  * Creates controls related with the SPDIF input.
1304  * Called from each patch supporting the SPDIF in.
1305  *
1306  * Returns 0 if successful, or a negative error code.
1307  */
1308 int __devinit snd_hda_create_spdif_in_ctls(struct hda_codec *codec,
1309                                            hda_nid_t nid)
1310 {
1311         int err;
1312         struct snd_kcontrol *kctl;
1313         struct snd_kcontrol_new *dig_mix;
1314
1315         for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) {
1316                 kctl = snd_ctl_new1(dig_mix, codec);
1317                 kctl->private_value = nid;
1318                 err = snd_ctl_add(codec->bus->card, kctl);
1319                 if (err < 0)
1320                         return err;
1321         }
1322         codec->spdif_in_enable =
1323                 snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_DIGI_CONVERT, 0) &
1324                 AC_DIG1_ENABLE;
1325         return 0;
1326 }
1327
1328
1329 /*
1330  * set power state of the codec
1331  */
1332 static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg,
1333                                 unsigned int power_state)
1334 {
1335         hda_nid_t nid, nid_start;
1336         int nodes;
1337
1338         snd_hda_codec_write(codec, fg, 0, AC_VERB_SET_POWER_STATE,
1339                             power_state);
1340
1341         nodes = snd_hda_get_sub_nodes(codec, fg, &nid_start);
1342         for (nid = nid_start; nid < nodes + nid_start; nid++) {
1343                 if (get_wcaps(codec, nid) & AC_WCAP_POWER)
1344                         snd_hda_codec_write(codec, nid, 0,
1345                                             AC_VERB_SET_POWER_STATE,
1346                                             power_state);
1347         }
1348
1349         if (power_state == AC_PWRST_D0)
1350                 msleep(10);
1351 }
1352
1353
1354 /**
1355  * snd_hda_build_controls - build mixer controls
1356  * @bus: the BUS
1357  *
1358  * Creates mixer controls for each codec included in the bus.
1359  *
1360  * Returns 0 if successful, otherwise a negative error code.
1361  */
1362 int __devinit snd_hda_build_controls(struct hda_bus *bus)
1363 {
1364         struct hda_codec *codec;
1365
1366         /* build controls */
1367         list_for_each_entry(codec, &bus->codec_list, list) {
1368                 int err;
1369                 if (!codec->patch_ops.build_controls)
1370                         continue;
1371                 err = codec->patch_ops.build_controls(codec);
1372                 if (err < 0)
1373                         return err;
1374         }
1375
1376         /* initialize */
1377         list_for_each_entry(codec, &bus->codec_list, list) {
1378                 int err;
1379                 hda_set_power_state(codec,
1380                                     codec->afg ? codec->afg : codec->mfg,
1381                                     AC_PWRST_D0);
1382                 if (!codec->patch_ops.init)
1383                         continue;
1384                 err = codec->patch_ops.init(codec);
1385                 if (err < 0)
1386                         return err;
1387         }
1388         return 0;
1389 }
1390
1391 /*
1392  * stream formats
1393  */
1394 struct hda_rate_tbl {
1395         unsigned int hz;
1396         unsigned int alsa_bits;
1397         unsigned int hda_fmt;
1398 };
1399
1400 static struct hda_rate_tbl rate_bits[] = {
1401         /* rate in Hz, ALSA rate bitmask, HDA format value */
1402
1403         /* autodetected value used in snd_hda_query_supported_pcm */
1404         { 8000, SNDRV_PCM_RATE_8000, 0x0500 }, /* 1/6 x 48 */
1405         { 11025, SNDRV_PCM_RATE_11025, 0x4300 }, /* 1/4 x 44 */
1406         { 16000, SNDRV_PCM_RATE_16000, 0x0200 }, /* 1/3 x 48 */
1407         { 22050, SNDRV_PCM_RATE_22050, 0x4100 }, /* 1/2 x 44 */
1408         { 32000, SNDRV_PCM_RATE_32000, 0x0a00 }, /* 2/3 x 48 */
1409         { 44100, SNDRV_PCM_RATE_44100, 0x4000 }, /* 44 */
1410         { 48000, SNDRV_PCM_RATE_48000, 0x0000 }, /* 48 */
1411         { 88200, SNDRV_PCM_RATE_88200, 0x4800 }, /* 2 x 44 */
1412         { 96000, SNDRV_PCM_RATE_96000, 0x0800 }, /* 2 x 48 */
1413         { 176400, SNDRV_PCM_RATE_176400, 0x5800 },/* 4 x 44 */
1414         { 192000, SNDRV_PCM_RATE_192000, 0x1800 }, /* 4 x 48 */
1415 #define AC_PAR_PCM_RATE_BITS    11
1416         /* up to bits 10, 384kHZ isn't supported properly */
1417
1418         /* not autodetected value */
1419         { 9600, SNDRV_PCM_RATE_KNOT, 0x0400 }, /* 1/5 x 48 */
1420
1421         { 0 } /* terminator */
1422 };
1423
1424 /**
1425  * snd_hda_calc_stream_format - calculate format bitset
1426  * @rate: the sample rate
1427  * @channels: the number of channels
1428  * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
1429  * @maxbps: the max. bps
1430  *
1431  * Calculate the format bitset from the given rate, channels and th PCM format.
1432  *
1433  * Return zero if invalid.
1434  */
1435 unsigned int snd_hda_calc_stream_format(unsigned int rate,
1436                                         unsigned int channels,
1437                                         unsigned int format,
1438                                         unsigned int maxbps)
1439 {
1440         int i;
1441         unsigned int val = 0;
1442
1443         for (i = 0; rate_bits[i].hz; i++)
1444                 if (rate_bits[i].hz == rate) {
1445                         val = rate_bits[i].hda_fmt;
1446                         break;
1447                 }
1448         if (!rate_bits[i].hz) {
1449                 snd_printdd("invalid rate %d\n", rate);
1450                 return 0;
1451         }
1452
1453         if (channels == 0 || channels > 8) {
1454                 snd_printdd("invalid channels %d\n", channels);
1455                 return 0;
1456         }
1457         val |= channels - 1;
1458
1459         switch (snd_pcm_format_width(format)) {
1460         case 8:  val |= 0x00; break;
1461         case 16: val |= 0x10; break;
1462         case 20:
1463         case 24:
1464         case 32:
1465                 if (maxbps >= 32)
1466                         val |= 0x40;
1467                 else if (maxbps >= 24)
1468                         val |= 0x30;
1469                 else
1470                         val |= 0x20;
1471                 break;
1472         default:
1473                 snd_printdd("invalid format width %d\n",
1474                             snd_pcm_format_width(format));
1475                 return 0;
1476         }
1477
1478         return val;
1479 }
1480
1481 /**
1482  * snd_hda_query_supported_pcm - query the supported PCM rates and formats
1483  * @codec: the HDA codec
1484  * @nid: NID to query
1485  * @ratesp: the pointer to store the detected rate bitflags
1486  * @formatsp: the pointer to store the detected formats
1487  * @bpsp: the pointer to store the detected format widths
1488  *
1489  * Queries the supported PCM rates and formats.  The NULL @ratesp, @formatsp
1490  * or @bsps argument is ignored.
1491  *
1492  * Returns 0 if successful, otherwise a negative error code.
1493  */
1494 int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid,
1495                                 u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
1496 {
1497         int i;
1498         unsigned int val, streams;
1499
1500         val = 0;
1501         if (nid != codec->afg &&
1502             (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) {
1503                 val = snd_hda_param_read(codec, nid, AC_PAR_PCM);
1504                 if (val == -1)
1505                         return -EIO;
1506         }
1507         if (!val)
1508                 val = snd_hda_param_read(codec, codec->afg, AC_PAR_PCM);
1509
1510         if (ratesp) {
1511                 u32 rates = 0;
1512                 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) {
1513                         if (val & (1 << i))
1514                                 rates |= rate_bits[i].alsa_bits;
1515                 }
1516                 *ratesp = rates;
1517         }
1518
1519         if (formatsp || bpsp) {
1520                 u64 formats = 0;
1521                 unsigned int bps;
1522                 unsigned int wcaps;
1523
1524                 wcaps = get_wcaps(codec, nid);
1525                 streams = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
1526                 if (streams == -1)
1527                         return -EIO;
1528                 if (!streams) {
1529                         streams = snd_hda_param_read(codec, codec->afg,
1530                                                      AC_PAR_STREAM);
1531                         if (streams == -1)
1532                                 return -EIO;
1533                 }
1534
1535                 bps = 0;
1536                 if (streams & AC_SUPFMT_PCM) {
1537                         if (val & AC_SUPPCM_BITS_8) {
1538                                 formats |= SNDRV_PCM_FMTBIT_U8;
1539                                 bps = 8;
1540                         }
1541                         if (val & AC_SUPPCM_BITS_16) {
1542                                 formats |= SNDRV_PCM_FMTBIT_S16_LE;
1543                                 bps = 16;
1544                         }
1545                         if (wcaps & AC_WCAP_DIGITAL) {
1546                                 if (val & AC_SUPPCM_BITS_32)
1547                                         formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
1548                                 if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
1549                                         formats |= SNDRV_PCM_FMTBIT_S32_LE;
1550                                 if (val & AC_SUPPCM_BITS_24)
1551                                         bps = 24;
1552                                 else if (val & AC_SUPPCM_BITS_20)
1553                                         bps = 20;
1554                         } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
1555                                           AC_SUPPCM_BITS_32)) {
1556                                 formats |= SNDRV_PCM_FMTBIT_S32_LE;
1557                                 if (val & AC_SUPPCM_BITS_32)
1558                                         bps = 32;
1559                                 else if (val & AC_SUPPCM_BITS_24)
1560                                         bps = 24;
1561                                 else if (val & AC_SUPPCM_BITS_20)
1562                                         bps = 20;
1563                         }
1564                 }
1565                 else if (streams == AC_SUPFMT_FLOAT32) {
1566                         /* should be exclusive */
1567                         formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
1568                         bps = 32;
1569                 } else if (streams == AC_SUPFMT_AC3) {
1570                         /* should be exclusive */
1571                         /* temporary hack: we have still no proper support
1572                          * for the direct AC3 stream...
1573                          */
1574                         formats |= SNDRV_PCM_FMTBIT_U8;
1575                         bps = 8;
1576                 }
1577                 if (formatsp)
1578                         *formatsp = formats;
1579                 if (bpsp)
1580                         *bpsp = bps;
1581         }
1582
1583         return 0;
1584 }
1585
1586 /**
1587  * snd_hda_is_supported_format - check whether the given node supports
1588  * the format val
1589  *
1590  * Returns 1 if supported, 0 if not.
1591  */
1592 int snd_hda_is_supported_format(struct hda_codec *codec, hda_nid_t nid,
1593                                 unsigned int format)
1594 {
1595         int i;
1596         unsigned int val = 0, rate, stream;
1597
1598         if (nid != codec->afg &&
1599             (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) {
1600                 val = snd_hda_param_read(codec, nid, AC_PAR_PCM);
1601                 if (val == -1)
1602                         return 0;
1603         }
1604         if (!val) {
1605                 val = snd_hda_param_read(codec, codec->afg, AC_PAR_PCM);
1606                 if (val == -1)
1607                         return 0;
1608         }
1609
1610         rate = format & 0xff00;
1611         for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++)
1612                 if (rate_bits[i].hda_fmt == rate) {
1613                         if (val & (1 << i))
1614                                 break;
1615                         return 0;
1616                 }
1617         if (i >= AC_PAR_PCM_RATE_BITS)
1618                 return 0;
1619
1620         stream = snd_hda_param_read(codec, nid, AC_PAR_STREAM);
1621         if (stream == -1)
1622                 return 0;
1623         if (!stream && nid != codec->afg)
1624                 stream = snd_hda_param_read(codec, codec->afg, AC_PAR_STREAM);
1625         if (!stream || stream == -1)
1626                 return 0;
1627
1628         if (stream & AC_SUPFMT_PCM) {
1629                 switch (format & 0xf0) {
1630                 case 0x00:
1631                         if (!(val & AC_SUPPCM_BITS_8))
1632                                 return 0;
1633                         break;
1634                 case 0x10:
1635                         if (!(val & AC_SUPPCM_BITS_16))
1636                                 return 0;
1637                         break;
1638                 case 0x20:
1639                         if (!(val & AC_SUPPCM_BITS_20))
1640                                 return 0;
1641                         break;
1642                 case 0x30:
1643                         if (!(val & AC_SUPPCM_BITS_24))
1644                                 return 0;
1645                         break;
1646                 case 0x40:
1647                         if (!(val & AC_SUPPCM_BITS_32))
1648                                 return 0;
1649                         break;
1650                 default:
1651                         return 0;
1652                 }
1653         } else {
1654                 /* FIXME: check for float32 and AC3? */
1655         }
1656
1657         return 1;
1658 }
1659
1660 /*
1661  * PCM stuff
1662  */
1663 static int hda_pcm_default_open_close(struct hda_pcm_stream *hinfo,
1664                                       struct hda_codec *codec,
1665                                       struct snd_pcm_substream *substream)
1666 {
1667         return 0;
1668 }
1669
1670 static int hda_pcm_default_prepare(struct hda_pcm_stream *hinfo,
1671                                    struct hda_codec *codec,
1672                                    unsigned int stream_tag,
1673                                    unsigned int format,
1674                                    struct snd_pcm_substream *substream)
1675 {
1676         snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);
1677         return 0;
1678 }
1679
1680 static int hda_pcm_default_cleanup(struct hda_pcm_stream *hinfo,
1681                                    struct hda_codec *codec,
1682                                    struct snd_pcm_substream *substream)
1683 {
1684         snd_hda_codec_setup_stream(codec, hinfo->nid, 0, 0, 0);
1685         return 0;
1686 }
1687
1688 static int __devinit set_pcm_default_values(struct hda_codec *codec,
1689                                             struct hda_pcm_stream *info)
1690 {
1691         /* query support PCM information from the given NID */
1692         if (info->nid && (!info->rates || !info->formats)) {
1693                 snd_hda_query_supported_pcm(codec, info->nid,
1694                                 info->rates ? NULL : &info->rates,
1695                                 info->formats ? NULL : &info->formats,
1696                                 info->maxbps ? NULL : &info->maxbps);
1697         }
1698         if (info->ops.open == NULL)
1699                 info->ops.open = hda_pcm_default_open_close;
1700         if (info->ops.close == NULL)
1701                 info->ops.close = hda_pcm_default_open_close;
1702         if (info->ops.prepare == NULL) {
1703                 snd_assert(info->nid, return -EINVAL);
1704                 info->ops.prepare = hda_pcm_default_prepare;
1705         }
1706         if (info->ops.cleanup == NULL) {
1707                 snd_assert(info->nid, return -EINVAL);
1708                 info->ops.cleanup = hda_pcm_default_cleanup;
1709         }
1710         return 0;
1711 }
1712
1713 /**
1714  * snd_hda_build_pcms - build PCM information
1715  * @bus: the BUS
1716  *
1717  * Create PCM information for each codec included in the bus.
1718  *
1719  * The build_pcms codec patch is requested to set up codec->num_pcms and
1720  * codec->pcm_info properly.  The array is referred by the top-level driver
1721  * to create its PCM instances.
1722  * The allocated codec->pcm_info should be released in codec->patch_ops.free
1723  * callback.
1724  *
1725  * At least, substreams, channels_min and channels_max must be filled for
1726  * each stream.  substreams = 0 indicates that the stream doesn't exist.
1727  * When rates and/or formats are zero, the supported values are queried
1728  * from the given nid.  The nid is used also by the default ops.prepare
1729  * and ops.cleanup callbacks.
1730  *
1731  * The driver needs to call ops.open in its open callback.  Similarly,
1732  * ops.close is supposed to be called in the close callback.
1733  * ops.prepare should be called in the prepare or hw_params callback
1734  * with the proper parameters for set up.
1735  * ops.cleanup should be called in hw_free for clean up of streams.
1736  *
1737  * This function returns 0 if successfull, or a negative error code.
1738  */
1739 int __devinit snd_hda_build_pcms(struct hda_bus *bus)
1740 {
1741         struct hda_codec *codec;
1742
1743         list_for_each_entry(codec, &bus->codec_list, list) {
1744                 unsigned int pcm, s;
1745                 int err;
1746                 if (!codec->patch_ops.build_pcms)
1747                         continue;
1748                 err = codec->patch_ops.build_pcms(codec);
1749                 if (err < 0)
1750                         return err;
1751                 for (pcm = 0; pcm < codec->num_pcms; pcm++) {
1752                         for (s = 0; s < 2; s++) {
1753                                 struct hda_pcm_stream *info;
1754                                 info = &codec->pcm_info[pcm].stream[s];
1755                                 if (!info->substreams)
1756                                         continue;
1757                                 err = set_pcm_default_values(codec, info);
1758                                 if (err < 0)
1759                                         return err;
1760                         }
1761                 }
1762         }
1763         return 0;
1764 }
1765
1766 /**
1767  * snd_hda_check_board_config - compare the current codec with the config table
1768  * @codec: the HDA codec
1769  * @num_configs: number of config enums
1770  * @models: array of model name strings
1771  * @tbl: configuration table, terminated by null entries
1772  *
1773  * Compares the modelname or PCI subsystem id of the current codec with the
1774  * given configuration table.  If a matching entry is found, returns its
1775  * config value (supposed to be 0 or positive).
1776  *
1777  * If no entries are matching, the function returns a negative value.
1778  */
1779 int __devinit snd_hda_check_board_config(struct hda_codec *codec,
1780                                          int num_configs, const char **models,
1781                                          const struct snd_pci_quirk *tbl)
1782 {
1783         if (codec->bus->modelname && models) {
1784                 int i;
1785                 for (i = 0; i < num_configs; i++) {
1786                         if (models[i] &&
1787                             !strcmp(codec->bus->modelname, models[i])) {
1788                                 snd_printd(KERN_INFO "hda_codec: model '%s' is "
1789                                            "selected\n", models[i]);
1790                                 return i;
1791                         }
1792                 }
1793         }
1794
1795         if (!codec->bus->pci || !tbl)
1796                 return -1;
1797
1798         tbl = snd_pci_quirk_lookup(codec->bus->pci, tbl);
1799         if (!tbl)
1800                 return -1;
1801         if (tbl->value >= 0 && tbl->value < num_configs) {
1802 #ifdef CONFIG_SND_DEBUG_DETECT
1803                 char tmp[10];
1804                 const char *model = NULL;
1805                 if (models)
1806                         model = models[tbl->value];
1807                 if (!model) {
1808                         sprintf(tmp, "#%d", tbl->value);
1809                         model = tmp;
1810                 }
1811                 snd_printdd(KERN_INFO "hda_codec: model '%s' is selected "
1812                             "for config %x:%x (%s)\n",
1813                             model, tbl->subvendor, tbl->subdevice,
1814                             (tbl->name ? tbl->name : "Unknown device"));
1815 #endif
1816                 return tbl->value;
1817         }
1818         return -1;
1819 }
1820
1821 /**
1822  * snd_hda_add_new_ctls - create controls from the array
1823  * @codec: the HDA codec
1824  * @knew: the array of struct snd_kcontrol_new
1825  *
1826  * This helper function creates and add new controls in the given array.
1827  * The array must be terminated with an empty entry as terminator.
1828  *
1829  * Returns 0 if successful, or a negative error code.
1830  */
1831 int __devinit snd_hda_add_new_ctls(struct hda_codec *codec,
1832                                    struct snd_kcontrol_new *knew)
1833 {
1834         int err;
1835
1836         for (; knew->name; knew++) {
1837                 struct snd_kcontrol *kctl;
1838                 kctl = snd_ctl_new1(knew, codec);
1839                 if (!kctl)
1840                         return -ENOMEM;
1841                 err = snd_ctl_add(codec->bus->card, kctl);
1842                 if (err < 0) {
1843                         if (!codec->addr)
1844                                 return err;
1845                         kctl = snd_ctl_new1(knew, codec);
1846                         if (!kctl)
1847                                 return -ENOMEM;
1848                         kctl->id.device = codec->addr;
1849                         err = snd_ctl_add(codec->bus->card, kctl);
1850                         if (err < 0)
1851                                 return err;
1852                 }
1853         }
1854         return 0;
1855 }
1856
1857
1858 /*
1859  * Channel mode helper
1860  */
1861 int snd_hda_ch_mode_info(struct hda_codec *codec,
1862                          struct snd_ctl_elem_info *uinfo,
1863                          const struct hda_channel_mode *chmode,
1864                          int num_chmodes)
1865 {
1866         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1867         uinfo->count = 1;
1868         uinfo->value.enumerated.items = num_chmodes;
1869         if (uinfo->value.enumerated.item >= num_chmodes)
1870                 uinfo->value.enumerated.item = num_chmodes - 1;
1871         sprintf(uinfo->value.enumerated.name, "%dch",
1872                 chmode[uinfo->value.enumerated.item].channels);
1873         return 0;
1874 }
1875
1876 int snd_hda_ch_mode_get(struct hda_codec *codec,
1877                         struct snd_ctl_elem_value *ucontrol,
1878                         const struct hda_channel_mode *chmode,
1879                         int num_chmodes,
1880                         int max_channels)
1881 {
1882         int i;
1883
1884         for (i = 0; i < num_chmodes; i++) {
1885                 if (max_channels == chmode[i].channels) {
1886                         ucontrol->value.enumerated.item[0] = i;
1887                         break;
1888                 }
1889         }
1890         return 0;
1891 }
1892
1893 int snd_hda_ch_mode_put(struct hda_codec *codec,
1894                         struct snd_ctl_elem_value *ucontrol,
1895                         const struct hda_channel_mode *chmode,
1896                         int num_chmodes,
1897                         int *max_channelsp)
1898 {
1899         unsigned int mode;
1900
1901         mode = ucontrol->value.enumerated.item[0];
1902         snd_assert(mode < num_chmodes, return -EINVAL);
1903         if (*max_channelsp == chmode[mode].channels && !codec->in_resume)
1904                 return 0;
1905         /* change the current channel setting */
1906         *max_channelsp = chmode[mode].channels;
1907         if (chmode[mode].sequence)
1908                 snd_hda_sequence_write(codec, chmode[mode].sequence);
1909         return 1;
1910 }
1911
1912 /*
1913  * input MUX helper
1914  */
1915 int snd_hda_input_mux_info(const struct hda_input_mux *imux,
1916                            struct snd_ctl_elem_info *uinfo)
1917 {
1918         unsigned int index;
1919
1920         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1921         uinfo->count = 1;
1922         uinfo->value.enumerated.items = imux->num_items;
1923         index = uinfo->value.enumerated.item;
1924         if (index >= imux->num_items)
1925                 index = imux->num_items - 1;
1926         strcpy(uinfo->value.enumerated.name, imux->items[index].label);
1927         return 0;
1928 }
1929
1930 int snd_hda_input_mux_put(struct hda_codec *codec,
1931                           const struct hda_input_mux *imux,
1932                           struct snd_ctl_elem_value *ucontrol,
1933                           hda_nid_t nid,
1934                           unsigned int *cur_val)
1935 {
1936         unsigned int idx;
1937
1938         idx = ucontrol->value.enumerated.item[0];
1939         if (idx >= imux->num_items)
1940                 idx = imux->num_items - 1;
1941         if (*cur_val == idx && !codec->in_resume)
1942                 return 0;
1943         snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CONNECT_SEL,
1944                             imux->items[idx].index);
1945         *cur_val = idx;
1946         return 1;
1947 }
1948
1949
1950 /*
1951  * Multi-channel / digital-out PCM helper functions
1952  */
1953
1954 /* setup SPDIF output stream */
1955 static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid,
1956                                  unsigned int stream_tag, unsigned int format)
1957 {
1958         /* turn off SPDIF once; otherwise the IEC958 bits won't be updated */
1959         if (codec->spdif_ctls & AC_DIG1_ENABLE)
1960                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
1961                                     codec->spdif_ctls & ~AC_DIG1_ENABLE & 0xff);
1962         snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
1963         /* turn on again (if needed) */
1964         if (codec->spdif_ctls & AC_DIG1_ENABLE)
1965                 snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
1966                                     codec->spdif_ctls & 0xff);
1967 }
1968
1969 /*
1970  * open the digital out in the exclusive mode
1971  */
1972 int snd_hda_multi_out_dig_open(struct hda_codec *codec,
1973                                struct hda_multi_out *mout)
1974 {
1975         mutex_lock(&codec->spdif_mutex);
1976         if (mout->dig_out_used == HDA_DIG_ANALOG_DUP)
1977                 /* already opened as analog dup; reset it once */
1978                 snd_hda_codec_setup_stream(codec, mout->dig_out_nid, 0, 0, 0);
1979         mout->dig_out_used = HDA_DIG_EXCLUSIVE;
1980         mutex_unlock(&codec->spdif_mutex);
1981         return 0;
1982 }
1983
1984 int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
1985                                   struct hda_multi_out *mout,
1986                                   unsigned int stream_tag,
1987                                   unsigned int format,
1988                                   struct snd_pcm_substream *substream)
1989 {
1990         mutex_lock(&codec->spdif_mutex);
1991         setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format);
1992         mutex_unlock(&codec->spdif_mutex);
1993         return 0;
1994 }
1995
1996 /*
1997  * release the digital out
1998  */
1999 int snd_hda_multi_out_dig_close(struct hda_codec *codec,
2000                                 struct hda_multi_out *mout)
2001 {
2002         mutex_lock(&codec->spdif_mutex);
2003         mout->dig_out_used = 0;
2004         mutex_unlock(&codec->spdif_mutex);
2005         return 0;
2006 }
2007
2008 /*
2009  * set up more restrictions for analog out
2010  */
2011 int snd_hda_multi_out_analog_open(struct hda_codec *codec,
2012                                   struct hda_multi_out *mout,
2013                                   struct snd_pcm_substream *substream)
2014 {
2015         substream->runtime->hw.channels_max = mout->max_channels;
2016         return snd_pcm_hw_constraint_step(substream->runtime, 0,
2017                                           SNDRV_PCM_HW_PARAM_CHANNELS, 2);
2018 }
2019
2020 /*
2021  * set up the i/o for analog out
2022  * when the digital out is available, copy the front out to digital out, too.
2023  */
2024 int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
2025                                      struct hda_multi_out *mout,
2026                                      unsigned int stream_tag,
2027                                      unsigned int format,
2028                                      struct snd_pcm_substream *substream)
2029 {
2030         hda_nid_t *nids = mout->dac_nids;
2031         int chs = substream->runtime->channels;
2032         int i;
2033
2034         mutex_lock(&codec->spdif_mutex);
2035         if (mout->dig_out_nid && mout->dig_out_used != HDA_DIG_EXCLUSIVE) {
2036                 if (chs == 2 &&
2037                     snd_hda_is_supported_format(codec, mout->dig_out_nid,
2038                                                 format) &&
2039                     !(codec->spdif_status & IEC958_AES0_NONAUDIO)) {
2040                         mout->dig_out_used = HDA_DIG_ANALOG_DUP;
2041                         setup_dig_out_stream(codec, mout->dig_out_nid,
2042                                              stream_tag, format);
2043                 } else {
2044                         mout->dig_out_used = 0;
2045                         snd_hda_codec_setup_stream(codec, mout->dig_out_nid,
2046                                                    0, 0, 0);
2047                 }
2048         }
2049         mutex_unlock(&codec->spdif_mutex);
2050
2051         /* front */
2052         snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag,
2053                                    0, format);
2054         if (mout->hp_nid && mout->hp_nid != nids[HDA_FRONT])
2055                 /* headphone out will just decode front left/right (stereo) */
2056                 snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag,
2057                                            0, format);
2058         /* extra outputs copied from front */
2059         for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
2060                 if (mout->extra_out_nid[i])
2061                         snd_hda_codec_setup_stream(codec,
2062                                                    mout->extra_out_nid[i],
2063                                                    stream_tag, 0, format);
2064
2065         /* surrounds */
2066         for (i = 1; i < mout->num_dacs; i++) {
2067                 if (chs >= (i + 1) * 2) /* independent out */
2068                         snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
2069                                                    i * 2, format);
2070                 else /* copy front */
2071                         snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
2072                                                    0, format);
2073         }
2074         return 0;
2075 }
2076
2077 /*
2078  * clean up the setting for analog out
2079  */
2080 int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
2081                                      struct hda_multi_out *mout)
2082 {
2083         hda_nid_t *nids = mout->dac_nids;
2084         int i;
2085
2086         for (i = 0; i < mout->num_dacs; i++)
2087                 snd_hda_codec_setup_stream(codec, nids[i], 0, 0, 0);
2088         if (mout->hp_nid)
2089                 snd_hda_codec_setup_stream(codec, mout->hp_nid, 0, 0, 0);
2090         for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++)
2091                 if (mout->extra_out_nid[i])
2092                         snd_hda_codec_setup_stream(codec,
2093                                                    mout->extra_out_nid[i],
2094                                                    0, 0, 0);
2095         mutex_lock(&codec->spdif_mutex);
2096         if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
2097                 snd_hda_codec_setup_stream(codec, mout->dig_out_nid, 0, 0, 0);
2098                 mout->dig_out_used = 0;
2099         }
2100         mutex_unlock(&codec->spdif_mutex);
2101         return 0;
2102 }
2103
2104 /*
2105  * Helper for automatic ping configuration
2106  */
2107
2108 static int __devinit is_in_nid_list(hda_nid_t nid, hda_nid_t *list)
2109 {
2110         for (; *list; list++)
2111                 if (*list == nid)
2112                         return 1;
2113         return 0;
2114 }
2115
2116
2117 /*
2118  * Sort an associated group of pins according to their sequence numbers.
2119  */
2120 static void sort_pins_by_sequence(hda_nid_t * pins, short * sequences,
2121                                   int num_pins)
2122 {
2123         int i, j;
2124         short seq;
2125         hda_nid_t nid;
2126
2127         for (i = 0; i < num_pins; i++) {
2128                 for (j = i + 1; j < num_pins; j++) {
2129                         if (sequences[i] > sequences[j]) {
2130                                 seq = sequences[i];
2131                                 sequences[i] = sequences[j];
2132                                 sequences[j] = seq;
2133                                 nid = pins[i];
2134                                 pins[i] = pins[j];
2135                                 pins[j] = nid;
2136                         }
2137                 }
2138         }
2139 }
2140
2141
2142 /*
2143  * Parse all pin widgets and store the useful pin nids to cfg
2144  *
2145  * The number of line-outs or any primary output is stored in line_outs,
2146  * and the corresponding output pins are assigned to line_out_pins[],
2147  * in the order of front, rear, CLFE, side, ...
2148  *
2149  * If more extra outputs (speaker and headphone) are found, the pins are
2150  * assisnged to hp_pins[] and speaker_pins[], respectively.  If no line-out jack
2151  * is detected, one of speaker of HP pins is assigned as the primary
2152  * output, i.e. to line_out_pins[0].  So, line_outs is always positive
2153  * if any analog output exists.
2154  *
2155  * The analog input pins are assigned to input_pins array.
2156  * The digital input/output pins are assigned to dig_in_pin and dig_out_pin,
2157  * respectively.
2158  */
2159 int __devinit snd_hda_parse_pin_def_config(struct hda_codec *codec,
2160                                            struct auto_pin_cfg *cfg,
2161                                            hda_nid_t *ignore_nids)
2162 {
2163         hda_nid_t nid, nid_start;
2164         int nodes;
2165         short seq, assoc_line_out, assoc_speaker;
2166         short sequences_line_out[ARRAY_SIZE(cfg->line_out_pins)];
2167         short sequences_speaker[ARRAY_SIZE(cfg->speaker_pins)];
2168
2169         memset(cfg, 0, sizeof(*cfg));
2170
2171         memset(sequences_line_out, 0, sizeof(sequences_line_out));
2172         memset(sequences_speaker, 0, sizeof(sequences_speaker));
2173         assoc_line_out = assoc_speaker = 0;
2174
2175         nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid_start);
2176         for (nid = nid_start; nid < nodes + nid_start; nid++) {
2177                 unsigned int wid_caps = get_wcaps(codec, nid);
2178                 unsigned int wid_type =
2179                         (wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
2180                 unsigned int def_conf;
2181                 short assoc, loc;
2182
2183                 /* read all default configuration for pin complex */
2184                 if (wid_type != AC_WID_PIN)
2185                         continue;
2186                 /* ignore the given nids (e.g. pc-beep returns error) */
2187                 if (ignore_nids && is_in_nid_list(nid, ignore_nids))
2188                         continue;
2189
2190                 def_conf = snd_hda_codec_read(codec, nid, 0,
2191                                               AC_VERB_GET_CONFIG_DEFAULT, 0);
2192                 if (get_defcfg_connect(def_conf) == AC_JACK_PORT_NONE)
2193                         continue;
2194                 loc = get_defcfg_location(def_conf);
2195                 switch (get_defcfg_device(def_conf)) {
2196                 case AC_JACK_LINE_OUT:
2197                         seq = get_defcfg_sequence(def_conf);
2198                         assoc = get_defcfg_association(def_conf);
2199                         if (!assoc)
2200                                 continue;
2201                         if (!assoc_line_out)
2202                                 assoc_line_out = assoc;
2203                         else if (assoc_line_out != assoc)
2204                                 continue;
2205                         if (cfg->line_outs >= ARRAY_SIZE(cfg->line_out_pins))
2206                                 continue;
2207                         cfg->line_out_pins[cfg->line_outs] = nid;
2208                         sequences_line_out[cfg->line_outs] = seq;
2209                         cfg->line_outs++;
2210                         break;
2211                 case AC_JACK_SPEAKER:
2212                         seq = get_defcfg_sequence(def_conf);
2213                         assoc = get_defcfg_association(def_conf);
2214                         if (! assoc)
2215                                 continue;
2216                         if (! assoc_speaker)
2217                                 assoc_speaker = assoc;
2218                         else if (assoc_speaker != assoc)
2219                                 continue;
2220                         if (cfg->speaker_outs >= ARRAY_SIZE(cfg->speaker_pins))
2221                                 continue;
2222                         cfg->speaker_pins[cfg->speaker_outs] = nid;
2223                         sequences_speaker[cfg->speaker_outs] = seq;
2224                         cfg->speaker_outs++;
2225                         break;
2226                 case AC_JACK_HP_OUT:
2227                         if (cfg->hp_outs >= ARRAY_SIZE(cfg->hp_pins))
2228                                 continue;
2229                         cfg->hp_pins[cfg->hp_outs] = nid;
2230                         cfg->hp_outs++;
2231                         break;
2232                 case AC_JACK_MIC_IN: {
2233                         int preferred, alt;
2234                         if (loc == AC_JACK_LOC_FRONT) {
2235                                 preferred = AUTO_PIN_FRONT_MIC;
2236                                 alt = AUTO_PIN_MIC;
2237                         } else {
2238                                 preferred = AUTO_PIN_MIC;
2239                                 alt = AUTO_PIN_FRONT_MIC;
2240                         }
2241                         if (!cfg->input_pins[preferred])
2242                                 cfg->input_pins[preferred] = nid;
2243                         else if (!cfg->input_pins[alt])
2244                                 cfg->input_pins[alt] = nid;
2245                         break;
2246                 }
2247                 case AC_JACK_LINE_IN:
2248                         if (loc == AC_JACK_LOC_FRONT)
2249                                 cfg->input_pins[AUTO_PIN_FRONT_LINE] = nid;
2250                         else
2251                                 cfg->input_pins[AUTO_PIN_LINE] = nid;
2252                         break;
2253                 case AC_JACK_CD:
2254                         cfg->input_pins[AUTO_PIN_CD] = nid;
2255                         break;
2256                 case AC_JACK_AUX:
2257                         cfg->input_pins[AUTO_PIN_AUX] = nid;
2258                         break;
2259                 case AC_JACK_SPDIF_OUT:
2260                         cfg->dig_out_pin = nid;
2261                         break;
2262                 case AC_JACK_SPDIF_IN:
2263                         cfg->dig_in_pin = nid;
2264                         break;
2265                 }
2266         }
2267
2268         /* sort by sequence */
2269         sort_pins_by_sequence(cfg->line_out_pins, sequences_line_out,
2270                               cfg->line_outs);
2271         sort_pins_by_sequence(cfg->speaker_pins, sequences_speaker,
2272                               cfg->speaker_outs);
2273
2274         /*
2275          * FIX-UP: if no line-outs are detected, try to use speaker or HP pin
2276          * as a primary output
2277          */
2278         if (!cfg->line_outs) {
2279                 if (cfg->speaker_outs) {
2280                         cfg->line_outs = cfg->speaker_outs;
2281                         memcpy(cfg->line_out_pins, cfg->speaker_pins,
2282                                sizeof(cfg->speaker_pins));
2283                         cfg->speaker_outs = 0;
2284                         memset(cfg->speaker_pins, 0, sizeof(cfg->speaker_pins));
2285                         cfg->line_out_type = AUTO_PIN_SPEAKER_OUT;
2286                 } else if (cfg->hp_outs) {
2287                         cfg->line_outs = cfg->hp_outs;
2288                         memcpy(cfg->line_out_pins, cfg->hp_pins,
2289                                sizeof(cfg->hp_pins));
2290                         cfg->hp_outs = 0;
2291                         memset(cfg->hp_pins, 0, sizeof(cfg->hp_pins));
2292                         cfg->line_out_type = AUTO_PIN_HP_OUT;
2293                 }
2294         }
2295
2296         /* Reorder the surround channels
2297          * ALSA sequence is front/surr/clfe/side
2298          * HDA sequence is:
2299          *    4-ch: front/surr  =>  OK as it is
2300          *    6-ch: front/clfe/surr
2301          *    8-ch: front/clfe/rear/side|fc
2302          */
2303         switch (cfg->line_outs) {
2304         case 3:
2305         case 4:
2306                 nid = cfg->line_out_pins[1];
2307                 cfg->line_out_pins[1] = cfg->line_out_pins[2];
2308                 cfg->line_out_pins[2] = nid;
2309                 break;
2310         }
2311
2312         /*
2313          * debug prints of the parsed results
2314          */
2315         snd_printd("autoconfig: line_outs=%d (0x%x/0x%x/0x%x/0x%x/0x%x)\n",
2316                    cfg->line_outs, cfg->line_out_pins[0], cfg->line_out_pins[1],
2317                    cfg->line_out_pins[2], cfg->line_out_pins[3],
2318                    cfg->line_out_pins[4]);
2319         snd_printd("   speaker_outs=%d (0x%x/0x%x/0x%x/0x%x/0x%x)\n",
2320                    cfg->speaker_outs, cfg->speaker_pins[0],
2321                    cfg->speaker_pins[1], cfg->speaker_pins[2],
2322                    cfg->speaker_pins[3], cfg->speaker_pins[4]);
2323         snd_printd("   hp_outs=%d (0x%x/0x%x/0x%x/0x%x/0x%x)\n",
2324                    cfg->hp_outs, cfg->hp_pins[0],
2325                    cfg->hp_pins[1], cfg->hp_pins[2],
2326                    cfg->hp_pins[3], cfg->hp_pins[4]);
2327         snd_printd("   inputs: mic=0x%x, fmic=0x%x, line=0x%x, fline=0x%x,"
2328                    " cd=0x%x, aux=0x%x\n",
2329                    cfg->input_pins[AUTO_PIN_MIC],
2330                    cfg->input_pins[AUTO_PIN_FRONT_MIC],
2331                    cfg->input_pins[AUTO_PIN_LINE],
2332                    cfg->input_pins[AUTO_PIN_FRONT_LINE],
2333                    cfg->input_pins[AUTO_PIN_CD],
2334                    cfg->input_pins[AUTO_PIN_AUX]);
2335
2336         return 0;
2337 }
2338
2339 /* labels for input pins */
2340 const char *auto_pin_cfg_labels[AUTO_PIN_LAST] = {
2341         "Mic", "Front Mic", "Line", "Front Line", "CD", "Aux"
2342 };
2343
2344
2345 #ifdef CONFIG_PM
2346 /*
2347  * power management
2348  */
2349
2350 /**
2351  * snd_hda_suspend - suspend the codecs
2352  * @bus: the HDA bus
2353  * @state: suspsend state
2354  *
2355  * Returns 0 if successful.
2356  */
2357 int snd_hda_suspend(struct hda_bus *bus, pm_message_t state)
2358 {
2359         struct hda_codec *codec;
2360
2361         /* FIXME: should handle power widget capabilities */
2362         list_for_each_entry(codec, &bus->codec_list, list) {
2363                 if (codec->patch_ops.suspend)
2364                         codec->patch_ops.suspend(codec, state);
2365                 hda_set_power_state(codec,
2366                                     codec->afg ? codec->afg : codec->mfg,
2367                                     AC_PWRST_D3);
2368         }
2369         return 0;
2370 }
2371
2372 /**
2373  * snd_hda_resume - resume the codecs
2374  * @bus: the HDA bus
2375  * @state: resume state
2376  *
2377  * Returns 0 if successful.
2378  */
2379 int snd_hda_resume(struct hda_bus *bus)
2380 {
2381         struct hda_codec *codec;
2382
2383         list_for_each_entry(codec, &bus->codec_list, list) {
2384                 hda_set_power_state(codec,
2385                                     codec->afg ? codec->afg : codec->mfg,
2386                                     AC_PWRST_D0);
2387                 if (codec->patch_ops.resume)
2388                         codec->patch_ops.resume(codec);
2389         }
2390         return 0;
2391 }
2392
2393 /**
2394  * snd_hda_resume_ctls - resume controls in the new control list
2395  * @codec: the HDA codec
2396  * @knew: the array of struct snd_kcontrol_new
2397  *
2398  * This function resumes the mixer controls in the struct snd_kcontrol_new array,
2399  * originally for snd_hda_add_new_ctls().
2400  * The array must be terminated with an empty entry as terminator.
2401  */
2402 int snd_hda_resume_ctls(struct hda_codec *codec, struct snd_kcontrol_new *knew)
2403 {
2404         struct snd_ctl_elem_value *val;
2405
2406         val = kmalloc(sizeof(*val), GFP_KERNEL);
2407         if (!val)
2408                 return -ENOMEM;
2409         codec->in_resume = 1;
2410         for (; knew->name; knew++) {
2411                 int i, count;
2412                 count = knew->count ? knew->count : 1;
2413                 for (i = 0; i < count; i++) {
2414                         memset(val, 0, sizeof(*val));
2415                         val->id.iface = knew->iface;
2416                         val->id.device = knew->device;
2417                         val->id.subdevice = knew->subdevice;
2418                         strcpy(val->id.name, knew->name);
2419                         val->id.index = knew->index ? knew->index : i;
2420                         /* Assume that get callback reads only from cache,
2421                          * not accessing to the real hardware
2422                          */
2423                         if (snd_ctl_elem_read(codec->bus->card, val) < 0)
2424                                 continue;
2425                         snd_ctl_elem_write(codec->bus->card, NULL, val);
2426                 }
2427         }
2428         codec->in_resume = 0;
2429         kfree(val);
2430         return 0;
2431 }
2432
2433 /**
2434  * snd_hda_resume_spdif_out - resume the digital out
2435  * @codec: the HDA codec
2436  */
2437 int snd_hda_resume_spdif_out(struct hda_codec *codec)
2438 {
2439         return snd_hda_resume_ctls(codec, dig_mixes);
2440 }
2441
2442 /**
2443  * snd_hda_resume_spdif_in - resume the digital in
2444  * @codec: the HDA codec
2445  */
2446 int snd_hda_resume_spdif_in(struct hda_codec *codec)
2447 {
2448         return snd_hda_resume_ctls(codec, dig_in_ctls);
2449 }
2450 #endif