sound/pci/hda/hda_generic.c

   1 /*
   2  * Universal Interface for Intel High Definition Audio Codec
   3  *
   4  * Generic widget tree parser
   5  *
   6  * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
   7  *
   8  *  This driver is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This driver is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  */
  22
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <sound/core.h>
  26 #include "hda_codec.h"
  27 #include "hda_local.h"
  28
  29 /* widget node for parsing */
  30 struct hda_gnode {
  31         hda_nid_t nid;          /* NID of this widget */
  32         unsigned short nconns;  /* number of input connections */
  33         hda_nid_t *conn_list;
  34         hda_nid_t slist[2];     /* temporay list */
  35         unsigned int wid_caps;  /* widget capabilities */
  36         unsigned char type;     /* widget type */
  37         unsigned char pin_ctl;  /* pin controls */
  38         unsigned char checked;  /* the flag indicates that the node is already parsed */
  39         unsigned int pin_caps;  /* pin widget capabilities */
  40         unsigned int def_cfg;   /* default configuration */
  41         unsigned int amp_out_caps;      /* AMP out capabilities */
  42         unsigned int amp_in_caps;       /* AMP in capabilities */
  43         struct list_head list;
  44 };
  45
  46 /* patch-specific record */
  47
  48 #define MAX_PCM_VOLS    2
  49 struct pcm_vol {
  50         struct hda_gnode *node; /* Node for PCM volume */
  51         unsigned int index;     /* connection of PCM volume */
  52 };
  53
  54 struct hda_gspec {
  55         struct hda_gnode *dac_node[2];  /* DAC node */
  56         struct hda_gnode *out_pin_node[2];      /* Output pin (Line-Out) node */
  57         struct pcm_vol pcm_vol[MAX_PCM_VOLS];   /* PCM volumes */
  58         unsigned int pcm_vol_nodes;     /* number of PCM volumes */
  59
  60         struct hda_gnode *adc_node;     /* ADC node */
  61         struct hda_gnode *cap_vol_node; /* Node for capture volume */
  62         unsigned int cur_cap_src;       /* current capture source */
  63         struct hda_input_mux input_mux;
  64         char cap_labels[HDA_MAX_NUM_INPUTS][16];
  65
  66         unsigned int def_amp_in_caps;
  67         unsigned int def_amp_out_caps;
  68
  69         struct hda_pcm pcm_rec;         /* PCM information */
  70
  71         struct list_head nid_list;      /* list of widgets */
  72
  73 #ifdef CONFIG_SND_HDA_POWER_SAVE
  74 #define MAX_LOOPBACK_AMPS       7
  75         struct hda_loopback_check loopback;
  76         int num_loopbacks;
  77         struct hda_amp_list loopback_list[MAX_LOOPBACK_AMPS + 1];
  78 #endif
  79 };
  80
  81 /*
  82  * retrieve the default device type from the default config value
  83  */
  84 #define defcfg_type(node) (((node)->def_cfg & AC_DEFCFG_DEVICE) >> \
  85                            AC_DEFCFG_DEVICE_SHIFT)
  86 #define defcfg_location(node) (((node)->def_cfg & AC_DEFCFG_LOCATION) >> \
  87                                AC_DEFCFG_LOCATION_SHIFT)
  88 #define defcfg_port_conn(node) (((node)->def_cfg & AC_DEFCFG_PORT_CONN) >> \
  89                                 AC_DEFCFG_PORT_CONN_SHIFT)
  90
  91 /*
  92  * destructor
  93  */
  94 static void snd_hda_generic_free(struct hda_codec *codec)
  95 {
  96         struct hda_gspec *spec = codec->spec;
  97         struct hda_gnode *node, *n;
  98
  99         if (! spec)
 100                 return;
 101         /* free all widgets */
 102         list_for_each_entry_safe(node, n, &spec->nid_list, list) {
 103                 if (node->conn_list != node->slist)
 104                         kfree(node->conn_list);
 105                 kfree(node);
 106         }
 107         kfree(spec);
 108 }
 109
 110
 111 /*
 112  * add a new widget node and read its attributes
 113  */
 114 static int add_new_node(struct hda_codec *codec, struct hda_gspec *spec, hda_nid_t nid)
 115 {
 116         struct hda_gnode *node;
 117         int nconns;
 118         hda_nid_t conn_list[HDA_MAX_CONNECTIONS];
 119
 120         node = kzalloc(sizeof(*node), GFP_KERNEL);
 121         if (node == NULL)
 122                 return -ENOMEM;
 123         node->nid = nid;
 124         node->wid_caps = get_wcaps(codec, nid);
 125         node->type = get_wcaps_type(node->wid_caps);
 126         if (node->wid_caps & AC_WCAP_CONN_LIST) {
 127                 nconns = snd_hda_get_connections(codec, nid, conn_list,
 128                                                  HDA_MAX_CONNECTIONS);
 129                 if (nconns < 0) {
 130                         kfree(node);
 131                         return nconns;
 132                 }
 133         } else {
 134                 nconns = 0;
 135         }
 136         if (nconns <= ARRAY_SIZE(node->slist))
 137                 node->conn_list = node->slist;
 138         else {
 139                 node->conn_list = kmalloc(sizeof(hda_nid_t) * nconns,
 140                                           GFP_KERNEL);
 141                 if (! node->conn_list) {
 142                         snd_printk(KERN_ERR "hda-generic: cannot malloc\n");
 143                         kfree(node);
 144                         return -ENOMEM;
 145                 }
 146         }
 147         memcpy(node->conn_list, conn_list, nconns * sizeof(hda_nid_t));
 148         node->nconns = nconns;
 149
 150         if (node->type == AC_WID_PIN) {
 151                 node->pin_caps = snd_hda_query_pin_caps(codec, node->nid);
 152                 node->pin_ctl = snd_hda_codec_read(codec, node->nid, 0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
 153                 node->def_cfg = snd_hda_codec_get_pincfg(codec, node->nid);
 154         }
 155
 156         if (node->wid_caps & AC_WCAP_OUT_AMP) {
 157                 if (node->wid_caps & AC_WCAP_AMP_OVRD)
 158                         node->amp_out_caps = snd_hda_param_read(codec, node->nid, AC_PAR_AMP_OUT_CAP);
 159                 if (! node->amp_out_caps)
 160                         node->amp_out_caps = spec->def_amp_out_caps;
 161         }
 162         if (node->wid_caps & AC_WCAP_IN_AMP) {
 163                 if (node->wid_caps & AC_WCAP_AMP_OVRD)
 164                         node->amp_in_caps = snd_hda_param_read(codec, node->nid, AC_PAR_AMP_IN_CAP);
 165                 if (! node->amp_in_caps)
 166                         node->amp_in_caps = spec->def_amp_in_caps;
 167         }
 168         list_add_tail(&node->list, &spec->nid_list);
 169         return 0;
 170 }
 171
 172 /*
 173  * build the AFG subtree
 174  */
 175 static int build_afg_tree(struct hda_codec *codec)
 176 {
 177         struct hda_gspec *spec = codec->spec;
 178         int i, nodes, err;
 179         hda_nid_t nid;
 180
 181         if (snd_BUG_ON(!spec))
 182                 return -EINVAL;
 183
 184         spec->def_amp_out_caps = snd_hda_param_read(codec, codec->afg, AC_PAR_AMP_OUT_CAP);
 185         spec->def_amp_in_caps = snd_hda_param_read(codec, codec->afg, AC_PAR_AMP_IN_CAP);
 186
 187         nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid);
 188         if (! nid || nodes < 0) {
 189                 printk(KERN_ERR "Invalid AFG subtree\n");
 190                 return -EINVAL;
 191         }
 192
 193         /* parse all nodes belonging to the AFG */
 194         for (i = 0; i < nodes; i++, nid++) {
 195                 if ((err = add_new_node(codec, spec, nid)) < 0)
 196                         return err;
 197         }
 198
 199         return 0;
 200 }
 201
 202
 203 /*
 204  * look for the node record for the given NID
 205  */
 206 /* FIXME: should avoid the braindead linear search */
 207 static struct hda_gnode *hda_get_node(struct hda_gspec *spec, hda_nid_t nid)
 208 {
 209         struct hda_gnode *node;
 210
 211         list_for_each_entry(node, &spec->nid_list, list) {
 212                 if (node->nid == nid)
 213                         return node;
 214         }
 215         return NULL;
 216 }
 217
 218 /*
 219  * unmute (and set max vol) the output amplifier
 220  */
 221 static int unmute_output(struct hda_codec *codec, struct hda_gnode *node)
 222 {
 223         unsigned int val, ofs;
 224         snd_printdd("UNMUTE OUT: NID=0x%x\n", node->nid);
 225         val = (node->amp_out_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
 226         ofs = (node->amp_out_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT;
 227         if (val >= ofs)
 228                 val -= ofs;
 229         snd_hda_codec_amp_stereo(codec, node->nid, HDA_OUTPUT, 0, 0xff, val);
 230         return 0;
 231 }
 232
 233 /*
 234  * unmute (and set max vol) the input amplifier
 235  */
 236 static int unmute_input(struct hda_codec *codec, struct hda_gnode *node, unsigned int index)
 237 {
 238         unsigned int val, ofs;
 239         snd_printdd("UNMUTE IN: NID=0x%x IDX=0x%x\n", node->nid, index);
 240         val = (node->amp_in_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
 241         ofs = (node->amp_in_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT;
 242         if (val >= ofs)
 243                 val -= ofs;
 244         snd_hda_codec_amp_stereo(codec, node->nid, HDA_INPUT, index, 0xff, val);
 245         return 0;
 246 }
 247
 248 /*
 249  * select the input connection of the given node.
 250  */
 251 static int select_input_connection(struct hda_codec *codec, struct hda_gnode *node,
 252                                    unsigned int index)
 253 {
 254         snd_printdd("CONNECT: NID=0x%x IDX=0x%x\n", node->nid, index);
 255         return snd_hda_codec_write_cache(codec, node->nid, 0,
 256                                          AC_VERB_SET_CONNECT_SEL, index);
 257 }
 258
 259 /*
 260  * clear checked flag of each node in the node list
 261  */
 262 static void clear_check_flags(struct hda_gspec *spec)
 263 {
 264         struct hda_gnode *node;
 265
 266         list_for_each_entry(node, &spec->nid_list, list) {
 267                 node->checked = 0;
 268         }
 269 }
 270
 271 /*
 272  * parse the output path recursively until reach to an audio output widget
 273  *
 274  * returns 0 if not found, 1 if found, or a negative error code.
 275  */
 276 static int parse_output_path(struct hda_codec *codec, struct hda_gspec *spec,
 277                              struct hda_gnode *node, int dac_idx)
 278 {
 279         int i, err;
 280         struct hda_gnode *child;
 281
 282         if (node->checked)
 283                 return 0;
 284
 285         node->checked = 1;
 286         if (node->type == AC_WID_AUD_OUT) {
 287                 if (node->wid_caps & AC_WCAP_DIGITAL) {
 288                         snd_printdd("Skip Digital OUT node %x\n", node->nid);
 289                         return 0;
 290                 }
 291                 snd_printdd("AUD_OUT found %x\n", node->nid);
 292                 if (spec->dac_node[dac_idx]) {
 293                         /* already DAC node is assigned, just unmute & connect */
 294                         return node == spec->dac_node[dac_idx];
 295                 }
 296                 spec->dac_node[dac_idx] = node;
 297                 if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
 298                     spec->pcm_vol_nodes < MAX_PCM_VOLS) {
 299                         spec->pcm_vol[spec->pcm_vol_nodes].node = node;
 300                         spec->pcm_vol[spec->pcm_vol_nodes].index = 0;
 301                         spec->pcm_vol_nodes++;
 302                 }
 303                 return 1; /* found */
 304         }
 305
 306         for (i = 0; i < node->nconns; i++) {
 307                 child = hda_get_node(spec, node->conn_list[i]);
 308                 if (! child)
 309                         continue;
 310                 err = parse_output_path(codec, spec, child, dac_idx);
 311                 if (err < 0)
 312                         return err;
 313                 else if (err > 0) {
 314                         /* found one,
 315                          * select the path, unmute both input and output
 316                          */
 317                         if (node->nconns > 1)
 318                                 select_input_connection(codec, node, i);
 319                         unmute_input(codec, node, i);
 320                         unmute_output(codec, node);
 321                         if (spec->dac_node[dac_idx] &&
 322                             spec->pcm_vol_nodes < MAX_PCM_VOLS &&
 323                             !(spec->dac_node[dac_idx]->wid_caps &
 324                               AC_WCAP_OUT_AMP)) {
 325                                 if ((node->wid_caps & AC_WCAP_IN_AMP) ||
 326                                     (node->wid_caps & AC_WCAP_OUT_AMP)) {
 327                                         int n = spec->pcm_vol_nodes;
 328                                         spec->pcm_vol[n].node = node;
 329                                         spec->pcm_vol[n].index = i;
 330                                         spec->pcm_vol_nodes++;
 331                                 }
 332                         }
 333                         return 1;
 334                 }
 335         }
 336         return 0;
 337 }
 338
 339 /*
 340  * Look for the output PIN widget with the given jack type
 341  * and parse the output path to that PIN.
 342  *
 343  * Returns the PIN node when the path to DAC is established.
 344  */
 345 static struct hda_gnode *parse_output_jack(struct hda_codec *codec,
 346                                            struct hda_gspec *spec,
 347                                            int jack_type)
 348 {
 349         struct hda_gnode *node;
 350         int err;
 351
 352         list_for_each_entry(node, &spec->nid_list, list) {
 353                 if (node->type != AC_WID_PIN)
 354                         continue;
 355                 /* output capable? */
 356                 if (! (node->pin_caps & AC_PINCAP_OUT))
 357                         continue;
 358                 if (defcfg_port_conn(node) == AC_JACK_PORT_NONE)
 359                         continue; /* unconnected */
 360                 if (jack_type >= 0) {
 361                         if (jack_type != defcfg_type(node))
 362                                 continue;
 363                         if (node->wid_caps & AC_WCAP_DIGITAL)
 364                                 continue; /* skip SPDIF */
 365                 } else {
 366                         /* output as default? */
 367                         if (! (node->pin_ctl & AC_PINCTL_OUT_EN))
 368                                 continue;
 369                 }
 370                 clear_check_flags(spec);
 371                 err = parse_output_path(codec, spec, node, 0);
 372                 if (err < 0)
 373                         return NULL;
 374                 if (! err && spec->out_pin_node[0]) {
 375                         err = parse_output_path(codec, spec, node, 1);
 376                         if (err < 0)
 377                                 return NULL;
 378                 }
 379                 if (err > 0) {
 380                         /* unmute the PIN output */
 381                         unmute_output(codec, node);
 382                         /* set PIN-Out enable */
 383                         snd_hda_codec_write_cache(codec, node->nid, 0,
 384                                             AC_VERB_SET_PIN_WIDGET_CONTROL,
 385                                             AC_PINCTL_OUT_EN |
 386                                             ((node->pin_caps & AC_PINCAP_HP_DRV) ?
 387                                              AC_PINCTL_HP_EN : 0));
 388                         return node;
 389                 }
 390         }
 391         return NULL;
 392 }
 393
 394
 395 /*
 396  * parse outputs
 397  */
 398 static int parse_output(struct hda_codec *codec)
 399 {
 400         struct hda_gspec *spec = codec->spec;
 401         struct hda_gnode *node;
 402
 403         /*
 404          * Look for the output PIN widget
 405          */
 406         /* first, look for the line-out pin */
 407         node = parse_output_jack(codec, spec, AC_JACK_LINE_OUT);
 408         if (node) /* found, remember the PIN node */
 409                 spec->out_pin_node[0] = node;
 410         else {
 411                 /* if no line-out is found, try speaker out */
 412                 node = parse_output_jack(codec, spec, AC_JACK_SPEAKER);
 413                 if (node)
 414                         spec->out_pin_node[0] = node;
 415         }
 416         /* look for the HP-out pin */
 417         node = parse_output_jack(codec, spec, AC_JACK_HP_OUT);
 418         if (node) {
 419                 if (! spec->out_pin_node[0])
 420                         spec->out_pin_node[0] = node;
 421                 else
 422                         spec->out_pin_node[1] = node;
 423         }
 424
 425         if (! spec->out_pin_node[0]) {
 426                 /* no line-out or HP pins found,
 427                  * then choose for the first output pin
 428                  */
 429                 spec->out_pin_node[0] = parse_output_jack(codec, spec, -1);
 430                 if (! spec->out_pin_node[0])
 431                         snd_printd("hda_generic: no proper output path found\n");
 432         }
 433
 434         return 0;
 435 }
 436
 437 /*
 438  * input MUX
 439  */
 440
 441 /* control callbacks */
 442 static int capture_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 443 {
 444         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 445         struct hda_gspec *spec = codec->spec;
 446         return snd_hda_input_mux_info(&spec->input_mux, uinfo);
 447 }
 448
 449 static int capture_source_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 450 {
 451         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 452         struct hda_gspec *spec = codec->spec;
 453
 454         ucontrol->value.enumerated.item[0] = spec->cur_cap_src;
 455         return 0;
 456 }
 457
 458 static int capture_source_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 459 {
 460         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 461         struct hda_gspec *spec = codec->spec;
 462         return snd_hda_input_mux_put(codec, &spec->input_mux, ucontrol,
 463                                      spec->adc_node->nid, &spec->cur_cap_src);
 464 }
 465
 466 /*
 467  * return the string name of the given input PIN widget
 468  */
 469 static const char *get_input_type(struct hda_gnode *node, unsigned int *pinctl)
 470 {
 471         unsigned int location = defcfg_location(node);
 472         switch (defcfg_type(node)) {
 473         case AC_JACK_LINE_IN:
 474                 if ((location & 0x0f) == AC_JACK_LOC_FRONT)
 475                         return "Front Line";
 476                 return "Line";
 477         case AC_JACK_CD:
 478 #if 0
 479                 if (pinctl)
 480                         *pinctl |= AC_PINCTL_VREF_GRD;
 481 #endif
 482                 return "CD";
 483         case AC_JACK_AUX:
 484                 if ((location & 0x0f) == AC_JACK_LOC_FRONT)
 485                         return "Front Aux";
 486                 return "Aux";
 487         case AC_JACK_MIC_IN:
 488                 if (pinctl &&
 489                     (node->pin_caps &
 490                      (AC_PINCAP_VREF_80 << AC_PINCAP_VREF_SHIFT)))
 491                         *pinctl |= AC_PINCTL_VREF_80;
 492                 if ((location & 0x0f) == AC_JACK_LOC_FRONT)
 493                         return "Front Mic";
 494                 return "Mic";
 495         case AC_JACK_SPDIF_IN:
 496                 return "SPDIF";
 497         case AC_JACK_DIG_OTHER_IN:
 498                 return "Digital";
 499         }
 500         return NULL;
 501 }
 502
 503 /*
 504  * parse the nodes recursively until reach to the input PIN
 505  *
 506  * returns 0 if not found, 1 if found, or a negative error code.
 507  */
 508 static int parse_adc_sub_nodes(struct hda_codec *codec, struct hda_gspec *spec,
 509                                struct hda_gnode *node)
 510 {
 511         int i, err;
 512         unsigned int pinctl;
 513         char *label;
 514         const char *type;
 515
 516         if (node->checked)
 517                 return 0;
 518
 519         node->checked = 1;
 520         if (node->type != AC_WID_PIN) {
 521                 for (i = 0; i < node->nconns; i++) {
 522                         struct hda_gnode *child;
 523                         child = hda_get_node(spec, node->conn_list[i]);
 524                         if (! child)
 525                                 continue;
 526                         err = parse_adc_sub_nodes(codec, spec, child);
 527                         if (err < 0)
 528                                 return err;
 529                         if (err > 0) {
 530                                 /* found one,
 531                                  * select the path, unmute both input and output
 532                                  */
 533                                 if (node->nconns > 1)
 534                                         select_input_connection(codec, node, i);
 535                                 unmute_input(codec, node, i);
 536                                 unmute_output(codec, node);
 537                                 return err;
 538                         }
 539                 }
 540                 return 0;
 541         }
 542
 543         /* input capable? */
 544         if (! (node->pin_caps & AC_PINCAP_IN))
 545                 return 0;
 546
 547         if (defcfg_port_conn(node) == AC_JACK_PORT_NONE)
 548                 return 0; /* unconnected */
 549
 550         if (node->wid_caps & AC_WCAP_DIGITAL)
 551                 return 0; /* skip SPDIF */
 552
 553         if (spec->input_mux.num_items >= HDA_MAX_NUM_INPUTS) {
 554                 snd_printk(KERN_ERR "hda_generic: Too many items for capture\n");
 555                 return -EINVAL;
 556         }
 557
 558         pinctl = AC_PINCTL_IN_EN;
 559         /* create a proper capture source label */
 560         type = get_input_type(node, &pinctl);
 561         if (! type) {
 562                 /* input as default? */
 563                 if (! (node->pin_ctl & AC_PINCTL_IN_EN))
 564                         return 0;
 565                 type = "Input";
 566         }
 567         label = spec->cap_labels[spec->input_mux.num_items];
 568         strcpy(label, type);
 569         spec->input_mux.items[spec->input_mux.num_items].label = label;
 570
 571         /* unmute the PIN external input */
 572         unmute_input(codec, node, 0); /* index = 0? */
 573         /* set PIN-In enable */
 574         snd_hda_codec_write_cache(codec, node->nid, 0,
 575                                   AC_VERB_SET_PIN_WIDGET_CONTROL, pinctl);
 576
 577         return 1; /* found */
 578 }
 579
 580 /* add a capture source element */
 581 static void add_cap_src(struct hda_gspec *spec, int idx)
 582 {
 583         struct hda_input_mux_item *csrc;
 584         char *buf;
 585         int num, ocap;
 586
 587         num = spec->input_mux.num_items;
 588         csrc = &spec->input_mux.items[num];
 589         buf = spec->cap_labels[num];
 590         for (ocap = 0; ocap < num; ocap++) {
 591                 if (! strcmp(buf, spec->cap_labels[ocap])) {
 592                         /* same label already exists,
 593                          * put the index number to be unique
 594                          */
 595                         sprintf(buf, "%s %d", spec->cap_labels[ocap], num);
 596                         break;
 597                 }
 598         }
 599         csrc->index = idx;
 600         spec->input_mux.num_items++;
 601 }
 602
 603 /*
 604  * parse input
 605  */
 606 static int parse_input_path(struct hda_codec *codec, struct hda_gnode *adc_node)
 607 {
 608         struct hda_gspec *spec = codec->spec;
 609         struct hda_gnode *node;
 610         int i, err;
 611
 612         snd_printdd("AUD_IN = %x\n", adc_node->nid);
 613         clear_check_flags(spec);
 614
 615         // awk added - fixed no recording due to muted widget
 616         unmute_input(codec, adc_node, 0);
 617
 618         /*
 619          * check each connection of the ADC
 620          * if it reaches to a proper input PIN, add the path as the
 621          * input path.
 622          */
 623         /* first, check the direct connections to PIN widgets */
 624         for (i = 0; i < adc_node->nconns; i++) {
 625                 node = hda_get_node(spec, adc_node->conn_list[i]);
 626                 if (node && node->type == AC_WID_PIN) {
 627                         err = parse_adc_sub_nodes(codec, spec, node);
 628                         if (err < 0)
 629                                 return err;
 630                         else if (err > 0)
 631                                 add_cap_src(spec, i);
 632                 }
 633         }
 634         /* ... then check the rests, more complicated connections */
 635         for (i = 0; i < adc_node->nconns; i++) {
 636                 node = hda_get_node(spec, adc_node->conn_list[i]);
 637                 if (node && node->type != AC_WID_PIN) {
 638                         err = parse_adc_sub_nodes(codec, spec, node);
 639                         if (err < 0)
 640                                 return err;
 641                         else if (err > 0)
 642                                 add_cap_src(spec, i);
 643                 }
 644         }
 645
 646         if (! spec->input_mux.num_items)
 647                 return 0; /* no input path found... */
 648
 649         snd_printdd("[Capture Source] NID=0x%x, #SRC=%d\n", adc_node->nid, spec->input_mux.num_items);
 650         for (i = 0; i < spec->input_mux.num_items; i++)
 651                 snd_printdd("  [%s] IDX=0x%x\n", spec->input_mux.items[i].label,
 652                             spec->input_mux.items[i].index);
 653
 654         spec->adc_node = adc_node;
 655         return 1;
 656 }
 657
 658 /*
 659  * parse input
 660  */
 661 static int parse_input(struct hda_codec *codec)
 662 {
 663         struct hda_gspec *spec = codec->spec;
 664         struct hda_gnode *node;
 665         int err;
 666
 667         /*
 668          * At first we look for an audio input widget.
 669          * If it reaches to certain input PINs, we take it as the
 670          * input path.
 671          */
 672         list_for_each_entry(node, &spec->nid_list, list) {
 673                 if (node->wid_caps & AC_WCAP_DIGITAL)
 674                         continue; /* skip SPDIF */
 675                 if (node->type == AC_WID_AUD_IN) {
 676                         err = parse_input_path(codec, node);
 677                         if (err < 0)
 678                                 return err;
 679                         else if (err > 0)
 680                                 return 0;
 681                 }
 682         }
 683         snd_printd("hda_generic: no proper input path found\n");
 684         return 0;
 685 }
 686
 687 #ifdef CONFIG_SND_HDA_POWER_SAVE
 688 static void add_input_loopback(struct hda_codec *codec, hda_nid_t nid,
 689                                int dir, int idx)
 690 {
 691         struct hda_gspec *spec = codec->spec;
 692         struct hda_amp_list *p;
 693
 694         if (spec->num_loopbacks >= MAX_LOOPBACK_AMPS) {
 695                 snd_printk(KERN_ERR "hda_generic: Too many loopback ctls\n");
 696                 return;
 697         }
 698         p = &spec->loopback_list[spec->num_loopbacks++];
 699         p->nid = nid;
 700         p->dir = dir;
 701         p->idx = idx;
 702         spec->loopback.amplist = spec->loopback_list;
 703 }
 704 #else
 705 #define add_input_loopback(codec,nid,dir,idx)
 706 #endif
 707
 708 /*
 709  * create mixer controls if possible
 710  */
 711 static int create_mixer(struct hda_codec *codec, struct hda_gnode *node,
 712                         unsigned int index, const char *type,
 713                         const char *dir_sfx, int is_loopback)
 714 {
 715         char name[32];
 716         int err;
 717         int created = 0;
 718         struct snd_kcontrol_new knew;
 719
 720         if (type)
 721                 sprintf(name, "%s %s Switch", type, dir_sfx);
 722         else
 723                 sprintf(name, "%s Switch", dir_sfx);
 724         if ((node->wid_caps & AC_WCAP_IN_AMP) &&
 725             (node->amp_in_caps & AC_AMPCAP_MUTE)) {
 726                 knew = (struct snd_kcontrol_new)HDA_CODEC_MUTE(name, node->nid, index, HDA_INPUT);
 727                 if (is_loopback)
 728                         add_input_loopback(codec, node->nid, HDA_INPUT, index);
 729                 snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index);
 730                 err = snd_hda_ctl_add(codec, node->nid,
 731                                         snd_ctl_new1(&knew, codec));
 732                 if (err < 0)
 733                         return err;
 734                 created = 1;
 735         } else if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
 736                    (node->amp_out_caps & AC_AMPCAP_MUTE)) {
 737                 knew = (struct snd_kcontrol_new)HDA_CODEC_MUTE(name, node->nid, 0, HDA_OUTPUT);
 738                 if (is_loopback)
 739                         add_input_loopback(codec, node->nid, HDA_OUTPUT, 0);
 740                 snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid);
 741                 err = snd_hda_ctl_add(codec, node->nid,
 742                                         snd_ctl_new1(&knew, codec));
 743                 if (err < 0)
 744                         return err;
 745                 created = 1;
 746         }
 747
 748         if (type)
 749                 sprintf(name, "%s %s Volume", type, dir_sfx);
 750         else
 751                 sprintf(name, "%s Volume", dir_sfx);
 752         if ((node->wid_caps & AC_WCAP_IN_AMP) &&
 753             (node->amp_in_caps & AC_AMPCAP_NUM_STEPS)) {
 754                 knew = (struct snd_kcontrol_new)HDA_CODEC_VOLUME(name, node->nid, index, HDA_INPUT);
 755                 snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index);
 756                 err = snd_hda_ctl_add(codec, node->nid,
 757                                         snd_ctl_new1(&knew, codec));
 758                 if (err < 0)
 759                         return err;
 760                 created = 1;
 761         } else if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
 762                    (node->amp_out_caps & AC_AMPCAP_NUM_STEPS)) {
 763                 knew = (struct snd_kcontrol_new)HDA_CODEC_VOLUME(name, node->nid, 0, HDA_OUTPUT);
 764                 snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid);
 765                 err = snd_hda_ctl_add(codec, node->nid,
 766                                         snd_ctl_new1(&knew, codec));
 767                 if (err < 0)
 768                         return err;
 769                 created = 1;
 770         }
 771
 772         return created;
 773 }
 774
 775 /*
 776  * check whether the controls with the given name and direction suffix already exist
 777  */
 778 static int check_existing_control(struct hda_codec *codec, const char *type, const char *dir)
 779 {
 780         struct snd_ctl_elem_id id;
 781         memset(&id, 0, sizeof(id));
 782         sprintf(id.name, "%s %s Volume", type, dir);
 783         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 784         if (snd_ctl_find_id(codec->bus->card, &id))
 785                 return 1;
 786         sprintf(id.name, "%s %s Switch", type, dir);
 787         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 788         if (snd_ctl_find_id(codec->bus->card, &id))
 789                 return 1;
 790         return 0;
 791 }
 792
 793 /*
 794  * build output mixer controls
 795  */
 796 static int create_output_mixers(struct hda_codec *codec, const char **names)
 797 {
 798         struct hda_gspec *spec = codec->spec;
 799         int i, err;
 800
 801         for (i = 0; i < spec->pcm_vol_nodes; i++) {
 802                 err = create_mixer(codec, spec->pcm_vol[i].node,
 803                                    spec->pcm_vol[i].index,
 804                                    names[i], "Playback", 0);
 805                 if (err < 0)
 806                         return err;
 807         }
 808         return 0;
 809 }
 810
 811 static int build_output_controls(struct hda_codec *codec)
 812 {
 813         struct hda_gspec *spec = codec->spec;
 814         static const char *types_speaker[] = { "Speaker", "Headphone" };
 815         static const char *types_line[] = { "Front", "Headphone" };
 816
 817         switch (spec->pcm_vol_nodes) {
 818         case 1:
 819                 return create_mixer(codec, spec->pcm_vol[0].node,
 820                                     spec->pcm_vol[0].index,
 821                                     "Master", "Playback", 0);
 822         case 2:
 823                 if (defcfg_type(spec->out_pin_node[0]) == AC_JACK_SPEAKER)
 824                         return create_output_mixers(codec, types_speaker);
 825                 else
 826                         return create_output_mixers(codec, types_line);
 827         }
 828         return 0;
 829 }
 830
 831 /* create capture volume/switch */
 832 static int build_input_controls(struct hda_codec *codec)
 833 {
 834         struct hda_gspec *spec = codec->spec;
 835         struct hda_gnode *adc_node = spec->adc_node;
 836         int i, err;
 837         static struct snd_kcontrol_new cap_sel = {
 838                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 839                 .name = "Capture Source",
 840                 .info = capture_source_info,
 841                 .get = capture_source_get,
 842                 .put = capture_source_put,
 843         };
 844
 845         if (! adc_node || ! spec->input_mux.num_items)
 846                 return 0; /* not found */
 847
 848         spec->cur_cap_src = 0;
 849         select_input_connection(codec, adc_node,
 850                                 spec->input_mux.items[0].index);
 851
 852         /* create capture volume and switch controls if the ADC has an amp */
 853         /* do we have only a single item? */
 854         if (spec->input_mux.num_items == 1) {
 855                 err = create_mixer(codec, adc_node,
 856                                    spec->input_mux.items[0].index,
 857                                    NULL, "Capture", 0);
 858                 if (err < 0)
 859                         return err;
 860                 return 0;
 861         }
 862
 863         /* create input MUX if multiple sources are available */
 864         err = snd_hda_ctl_add(codec, 0, snd_ctl_new1(&cap_sel, codec));
 865         if (err < 0)
 866                 return err;
 867
 868         /* no volume control? */
 869         if (! (adc_node->wid_caps & AC_WCAP_IN_AMP) ||
 870             ! (adc_node->amp_in_caps & AC_AMPCAP_NUM_STEPS))
 871                 return 0;
 872
 873         for (i = 0; i < spec->input_mux.num_items; i++) {
 874                 struct snd_kcontrol_new knew;
 875                 char name[32];
 876                 sprintf(name, "%s Capture Volume",
 877                         spec->input_mux.items[i].label);
 878                 knew = (struct snd_kcontrol_new)
 879                         HDA_CODEC_VOLUME(name, adc_node->nid,
 880                                          spec->input_mux.items[i].index,
 881                                          HDA_INPUT);
 882                 err = snd_hda_ctl_add(codec, adc_node->nid,
 883                                         snd_ctl_new1(&knew, codec));
 884                 if (err < 0)
 885                         return err;
 886         }
 887
 888         return 0;
 889 }
 890
 891
 892 /*
 893  * parse the nodes recursively until reach to the output PIN.
 894  *
 895  * returns 0 - if not found,
 896  *         1 - if found, but no mixer is created
 897  *         2 - if found and mixer was already created, (just skip)
 898  *         a negative error code
 899  */
 900 static int parse_loopback_path(struct hda_codec *codec, struct hda_gspec *spec,
 901                                struct hda_gnode *node, struct hda_gnode *dest_node,
 902                                const char *type)
 903 {
 904         int i, err;
 905
 906         if (node->checked)
 907                 return 0;
 908
 909         node->checked = 1;
 910         if (node == dest_node) {
 911                 /* loopback connection found */
 912                 return 1;
 913         }
 914
 915         for (i = 0; i < node->nconns; i++) {
 916                 struct hda_gnode *child = hda_get_node(spec, node->conn_list[i]);
 917                 if (! child)
 918                         continue;
 919                 err = parse_loopback_path(codec, spec, child, dest_node, type);
 920                 if (err < 0)
 921                         return err;
 922                 else if (err >= 1) {
 923                         if (err == 1) {
 924                                 err = create_mixer(codec, node, i, type,
 925                                                    "Playback", 1);
 926                                 if (err < 0)
 927                                         return err;
 928                                 if (err > 0)
 929                                         return 2; /* ok, created */
 930                                 /* not created, maybe in the lower path */
 931                                 err = 1;
 932                         }
 933                         /* connect and unmute */
 934                         if (node->nconns > 1)
 935                                 select_input_connection(codec, node, i);
 936                         unmute_input(codec, node, i);
 937                         unmute_output(codec, node);
 938                         return err;
 939                 }
 940         }
 941         return 0;
 942 }
 943
 944 /*
 945  * parse the tree and build the loopback controls
 946  */
 947 static int build_loopback_controls(struct hda_codec *codec)
 948 {
 949         struct hda_gspec *spec = codec->spec;
 950         struct hda_gnode *node;
 951         int err;
 952         const char *type;
 953
 954         if (! spec->out_pin_node[0])
 955                 return 0;
 956
 957         list_for_each_entry(node, &spec->nid_list, list) {
 958                 if (node->type != AC_WID_PIN)
 959                         continue;
 960                 /* input capable? */
 961                 if (! (node->pin_caps & AC_PINCAP_IN))
 962                         return 0;
 963                 type = get_input_type(node, NULL);
 964                 if (type) {
 965                         if (check_existing_control(codec, type, "Playback"))
 966                                 continue;
 967                         clear_check_flags(spec);
 968                         err = parse_loopback_path(codec, spec,
 969                                                   spec->out_pin_node[0],
 970                                                   node, type);
 971                         if (err < 0)
 972                                 return err;
 973                         if (! err)
 974                                 continue;
 975                 }
 976         }
 977         return 0;
 978 }
 979
 980 /*
 981  * build mixer controls
 982  */
 983 static int build_generic_controls(struct hda_codec *codec)
 984 {
 985         int err;
 986
 987         if ((err = build_input_controls(codec)) < 0 ||
 988             (err = build_output_controls(codec)) < 0 ||
 989             (err = build_loopback_controls(codec)) < 0)
 990                 return err;
 991
 992         return 0;
 993 }
 994
 995 /*
 996  * PCM
 997  */
 998 static struct hda_pcm_stream generic_pcm_playback = {
 999         .substreams = 1,
1000         .channels_min = 2,
1001         .channels_max = 2,
1002 };
1003
1004 static int generic_pcm2_prepare(struct hda_pcm_stream *hinfo,
1005                                 struct hda_codec *codec,
1006                                 unsigned int stream_tag,
1007                                 unsigned int format,
1008                                 struct snd_pcm_substream *substream)
1009 {
1010         struct hda_gspec *spec = codec->spec;
1011
1012         snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);
1013         snd_hda_codec_setup_stream(codec, spec->dac_node[1]->nid,
1014                                    stream_tag, 0, format);
1015         return 0;
1016 }
1017
1018 static int generic_pcm2_cleanup(struct hda_pcm_stream *hinfo,
1019                                 struct hda_codec *codec,
1020                                 struct snd_pcm_substream *substream)
1021 {
1022         struct hda_gspec *spec = codec->spec;
1023
1024         snd_hda_codec_cleanup_stream(codec, hinfo->nid);
1025         snd_hda_codec_cleanup_stream(codec, spec->dac_node[1]->nid);
1026         return 0;
1027 }
1028
1029 static int build_generic_pcms(struct hda_codec *codec)
1030 {
1031         struct hda_gspec *spec = codec->spec;
1032         struct hda_pcm *info = &spec->pcm_rec;
1033
1034         if (! spec->dac_node[0] && ! spec->adc_node) {
1035                 snd_printd("hda_generic: no PCM found\n");
1036                 return 0;
1037         }
1038
1039         codec->num_pcms = 1;
1040         codec->pcm_info = info;
1041
1042         info->name = "HDA Generic";
1043         if (spec->dac_node[0]) {
1044                 info->stream[0] = generic_pcm_playback;
1045                 info->stream[0].nid = spec->dac_node[0]->nid;
1046                 if (spec->dac_node[1]) {
1047                         info->stream[0].ops.prepare = generic_pcm2_prepare;
1048                         info->stream[0].ops.cleanup = generic_pcm2_cleanup;
1049                 }
1050         }
1051         if (spec->adc_node) {
1052                 info->stream[1] = generic_pcm_playback;
1053                 info->stream[1].nid = spec->adc_node->nid;
1054         }
1055
1056         return 0;
1057 }
1058
1059 #ifdef CONFIG_SND_HDA_POWER_SAVE
1060 static int generic_check_power_status(struct hda_codec *codec, hda_nid_t nid)
1061 {
1062         struct hda_gspec *spec = codec->spec;
1063         return snd_hda_check_amp_list_power(codec, &spec->loopback, nid);
1064 }
1065 #endif
1066
1067
1068 /*
1069  */
1070 static struct hda_codec_ops generic_patch_ops = {
1071         .build_controls = build_generic_controls,
1072         .build_pcms = build_generic_pcms,
1073         .free = snd_hda_generic_free,
1074 #ifdef CONFIG_SND_HDA_POWER_SAVE
1075         .check_power_status = generic_check_power_status,
1076 #endif
1077 };
1078
1079 /*
1080  * the generic parser
1081  */
1082 int snd_hda_parse_generic_codec(struct hda_codec *codec)
1083 {
1084         struct hda_gspec *spec;
1085         int err;
1086
1087         if(!codec->afg)
1088                 return 0;
1089
1090         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
1091         if (spec == NULL) {
1092                 printk(KERN_ERR "hda_generic: can't allocate spec\n");
1093                 return -ENOMEM;
1094         }
1095         codec->spec = spec;
1096         INIT_LIST_HEAD(&spec->nid_list);
1097
1098         if ((err = build_afg_tree(codec)) < 0)
1099                 goto error;
1100
1101         if ((err = parse_input(codec)) < 0 ||
1102             (err = parse_output(codec)) < 0)
1103                 goto error;
1104
1105         codec->patch_ops = generic_patch_ops;
1106
1107         return 0;
1108
1109  error:
1110         snd_hda_generic_free(codec);
1111         return err;
1112 }
1113 EXPORT_SYMBOL(snd_hda_parse_generic_codec);