release/src-rt-6.x.4708/linux/linux-2.6.36/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 static struct hda_gnode *hda_get_node(struct hda_gspec *spec, hda_nid_t nid)
 207 {
 208         struct hda_gnode *node;
 209
 210         list_for_each_entry(node, &spec->nid_list, list) {
 211                 if (node->nid == nid)
 212                         return node;
 213         }
 214         return NULL;
 215 }
 216
 217 /*
 218  * unmute (and set max vol) the output amplifier
 219  */
 220 static int unmute_output(struct hda_codec *codec, struct hda_gnode *node)
 221 {
 222         unsigned int val, ofs;
 223         snd_printdd("UNMUTE OUT: NID=0x%x\n", node->nid);
 224         val = (node->amp_out_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
 225         ofs = (node->amp_out_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT;
 226         if (val >= ofs)
 227                 val -= ofs;
 228         snd_hda_codec_amp_stereo(codec, node->nid, HDA_OUTPUT, 0, 0xff, val);
 229         return 0;
 230 }
 231
 232 /*
 233  * unmute (and set max vol) the input amplifier
 234  */
 235 static int unmute_input(struct hda_codec *codec, struct hda_gnode *node, unsigned int index)
 236 {
 237         unsigned int val, ofs;
 238         snd_printdd("UNMUTE IN: NID=0x%x IDX=0x%x\n", node->nid, index);
 239         val = (node->amp_in_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
 240         ofs = (node->amp_in_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT;
 241         if (val >= ofs)
 242                 val -= ofs;
 243         snd_hda_codec_amp_stereo(codec, node->nid, HDA_INPUT, index, 0xff, val);
 244         return 0;
 245 }
 246
 247 /*
 248  * select the input connection of the given node.
 249  */
 250 static int select_input_connection(struct hda_codec *codec, struct hda_gnode *node,
 251                                    unsigned int index)
 252 {
 253         snd_printdd("CONNECT: NID=0x%x IDX=0x%x\n", node->nid, index);
 254         return snd_hda_codec_write_cache(codec, node->nid, 0,
 255                                          AC_VERB_SET_CONNECT_SEL, index);
 256 }
 257
 258 /*
 259  * clear checked flag of each node in the node list
 260  */
 261 static void clear_check_flags(struct hda_gspec *spec)
 262 {
 263         struct hda_gnode *node;
 264
 265         list_for_each_entry(node, &spec->nid_list, list) {
 266                 node->checked = 0;
 267         }
 268 }
 269
 270 /*
 271  * parse the output path recursively until reach to an audio output widget
 272  *
 273  * returns 0 if not found, 1 if found, or a negative error code.
 274  */
 275 static int parse_output_path(struct hda_codec *codec, struct hda_gspec *spec,
 276                              struct hda_gnode *node, int dac_idx)
 277 {
 278         int i, err;
 279         struct hda_gnode *child;
 280
 281         if (node->checked)
 282                 return 0;
 283
 284         node->checked = 1;
 285         if (node->type == AC_WID_AUD_OUT) {
 286                 if (node->wid_caps & AC_WCAP_DIGITAL) {
 287                         snd_printdd("Skip Digital OUT node %x\n", node->nid);
 288                         return 0;
 289                 }
 290                 snd_printdd("AUD_OUT found %x\n", node->nid);
 291                 if (spec->dac_node[dac_idx]) {
 292                         /* already DAC node is assigned, just unmute & connect */
 293                         return node == spec->dac_node[dac_idx];
 294                 }
 295                 spec->dac_node[dac_idx] = node;
 296                 if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
 297                     spec->pcm_vol_nodes < MAX_PCM_VOLS) {
 298                         spec->pcm_vol[spec->pcm_vol_nodes].node = node;
 299                         spec->pcm_vol[spec->pcm_vol_nodes].index = 0;
 300                         spec->pcm_vol_nodes++;
 301                 }
 302                 return 1; /* found */
 303         }
 304
 305         for (i = 0; i < node->nconns; i++) {
 306                 child = hda_get_node(spec, node->conn_list[i]);
 307                 if (! child)
 308                         continue;
 309                 err = parse_output_path(codec, spec, child, dac_idx);
 310                 if (err < 0)
 311                         return err;
 312                 else if (err > 0) {
 313                         /* found one,
 314                          * select the path, unmute both input and output
 315                          */
 316                         if (node->nconns > 1)
 317                                 select_input_connection(codec, node, i);
 318                         unmute_input(codec, node, i);
 319                         unmute_output(codec, node);
 320                         if (spec->dac_node[dac_idx] &&
 321                             spec->pcm_vol_nodes < MAX_PCM_VOLS &&
 322                             !(spec->dac_node[dac_idx]->wid_caps &
 323                               AC_WCAP_OUT_AMP)) {
 324                                 if ((node->wid_caps & AC_WCAP_IN_AMP) ||
 325                                     (node->wid_caps & AC_WCAP_OUT_AMP)) {
 326                                         int n = spec->pcm_vol_nodes;
 327                                         spec->pcm_vol[n].node = node;
 328                                         spec->pcm_vol[n].index = i;
 329                                         spec->pcm_vol_nodes++;
 330                                 }
 331                         }
 332                         return 1;
 333                 }
 334         }
 335         return 0;
 336 }
 337
 338 /*
 339  * Look for the output PIN widget with the given jack type
 340  * and parse the output path to that PIN.
 341  *
 342  * Returns the PIN node when the path to DAC is established.
 343  */
 344 static struct hda_gnode *parse_output_jack(struct hda_codec *codec,
 345                                            struct hda_gspec *spec,
 346                                            int jack_type)
 347 {
 348         struct hda_gnode *node;
 349         int err;
 350
 351         list_for_each_entry(node, &spec->nid_list, list) {
 352                 if (node->type != AC_WID_PIN)
 353                         continue;
 354                 /* output capable? */
 355                 if (! (node->pin_caps & AC_PINCAP_OUT))
 356                         continue;
 357                 if (defcfg_port_conn(node) == AC_JACK_PORT_NONE)
 358                         continue; /* unconnected */
 359                 if (jack_type >= 0) {
 360                         if (jack_type != defcfg_type(node))
 361                                 continue;
 362                         if (node->wid_caps & AC_WCAP_DIGITAL)
 363                                 continue; /* skip SPDIF */
 364                 } else {
 365                         /* output as default? */
 366                         if (! (node->pin_ctl & AC_PINCTL_OUT_EN))
 367                                 continue;
 368                 }
 369                 clear_check_flags(spec);
 370                 err = parse_output_path(codec, spec, node, 0);
 371                 if (err < 0)
 372                         return NULL;
 373                 if (! err && spec->out_pin_node[0]) {
 374                         err = parse_output_path(codec, spec, node, 1);
 375                         if (err < 0)
 376                                 return NULL;
 377                 }
 378                 if (err > 0) {
 379                         /* unmute the PIN output */
 380                         unmute_output(codec, node);
 381                         /* set PIN-Out enable */
 382                         snd_hda_codec_write_cache(codec, node->nid, 0,
 383                                             AC_VERB_SET_PIN_WIDGET_CONTROL,
 384                                             AC_PINCTL_OUT_EN |
 385                                             ((node->pin_caps & AC_PINCAP_HP_DRV) ?
 386                                              AC_PINCTL_HP_EN : 0));
 387                         return node;
 388                 }
 389         }
 390         return NULL;
 391 }
 392
 393
 394 /*
 395  * parse outputs
 396  */
 397 static int parse_output(struct hda_codec *codec)
 398 {
 399         struct hda_gspec *spec = codec->spec;
 400         struct hda_gnode *node;
 401
 402         /*
 403          * Look for the output PIN widget
 404          */
 405         /* first, look for the line-out pin */
 406         node = parse_output_jack(codec, spec, AC_JACK_LINE_OUT);
 407         if (node) /* found, remember the PIN node */
 408                 spec->out_pin_node[0] = node;
 409         else {
 410                 /* if no line-out is found, try speaker out */
 411                 node = parse_output_jack(codec, spec, AC_JACK_SPEAKER);
 412                 if (node)
 413                         spec->out_pin_node[0] = node;
 414         }
 415         /* look for the HP-out pin */
 416         node = parse_output_jack(codec, spec, AC_JACK_HP_OUT);
 417         if (node) {
 418                 if (! spec->out_pin_node[0])
 419                         spec->out_pin_node[0] = node;
 420                 else
 421                         spec->out_pin_node[1] = node;
 422         }
 423
 424         if (! spec->out_pin_node[0]) {
 425                 /* no line-out or HP pins found,
 426                  * then choose for the first output pin
 427                  */
 428                 spec->out_pin_node[0] = parse_output_jack(codec, spec, -1);
 429                 if (! spec->out_pin_node[0])
 430                         snd_printd("hda_generic: no proper output path found\n");
 431         }
 432
 433         return 0;
 434 }
 435
 436 /*
 437  * input MUX
 438  */
 439
 440 /* control callbacks */
 441 static int capture_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 442 {
 443         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 444         struct hda_gspec *spec = codec->spec;
 445         return snd_hda_input_mux_info(&spec->input_mux, uinfo);
 446 }
 447
 448 static int capture_source_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 449 {
 450         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 451         struct hda_gspec *spec = codec->spec;
 452
 453         ucontrol->value.enumerated.item[0] = spec->cur_cap_src;
 454         return 0;
 455 }
 456
 457 static int capture_source_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 458 {
 459         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 460         struct hda_gspec *spec = codec->spec;
 461         return snd_hda_input_mux_put(codec, &spec->input_mux, ucontrol,
 462                                      spec->adc_node->nid, &spec->cur_cap_src);
 463 }
 464
 465 /*
 466  * return the string name of the given input PIN widget
 467  */
 468 static const char *get_input_type(struct hda_gnode *node, unsigned int *pinctl)
 469 {
 470         unsigned int location = defcfg_location(node);
 471         switch (defcfg_type(node)) {
 472         case AC_JACK_LINE_IN:
 473                 if ((location & 0x0f) == AC_JACK_LOC_FRONT)
 474                         return "Front Line";
 475                 return "Line";
 476         case AC_JACK_CD:
 477                 return "CD";
 478         case AC_JACK_AUX:
 479                 if ((location & 0x0f) == AC_JACK_LOC_FRONT)
 480                         return "Front Aux";
 481                 return "Aux";
 482         case AC_JACK_MIC_IN:
 483                 if (pinctl &&
 484                     (node->pin_caps &
 485                      (AC_PINCAP_VREF_80 << AC_PINCAP_VREF_SHIFT)))
 486                         *pinctl |= AC_PINCTL_VREF_80;
 487                 if ((location & 0x0f) == AC_JACK_LOC_FRONT)
 488                         return "Front Mic";
 489                 return "Mic";
 490         case AC_JACK_SPDIF_IN:
 491                 return "SPDIF";
 492         case AC_JACK_DIG_OTHER_IN:
 493                 return "Digital";
 494         }
 495         return NULL;
 496 }
 497
 498 /*
 499  * parse the nodes recursively until reach to the input PIN
 500  *
 501  * returns 0 if not found, 1 if found, or a negative error code.
 502  */
 503 static int parse_adc_sub_nodes(struct hda_codec *codec, struct hda_gspec *spec,
 504                                struct hda_gnode *node)
 505 {
 506         int i, err;
 507         unsigned int pinctl;
 508         char *label;
 509         const char *type;
 510
 511         if (node->checked)
 512                 return 0;
 513
 514         node->checked = 1;
 515         if (node->type != AC_WID_PIN) {
 516                 for (i = 0; i < node->nconns; i++) {
 517                         struct hda_gnode *child;
 518                         child = hda_get_node(spec, node->conn_list[i]);
 519                         if (! child)
 520                                 continue;
 521                         err = parse_adc_sub_nodes(codec, spec, child);
 522                         if (err < 0)
 523                                 return err;
 524                         if (err > 0) {
 525                                 /* found one,
 526                                  * select the path, unmute both input and output
 527                                  */
 528                                 if (node->nconns > 1)
 529                                         select_input_connection(codec, node, i);
 530                                 unmute_input(codec, node, i);
 531                                 unmute_output(codec, node);
 532                                 return err;
 533                         }
 534                 }
 535                 return 0;
 536         }
 537
 538         /* input capable? */
 539         if (! (node->pin_caps & AC_PINCAP_IN))
 540                 return 0;
 541
 542         if (defcfg_port_conn(node) == AC_JACK_PORT_NONE)
 543                 return 0; /* unconnected */
 544
 545         if (node->wid_caps & AC_WCAP_DIGITAL)
 546                 return 0; /* skip SPDIF */
 547
 548         if (spec->input_mux.num_items >= HDA_MAX_NUM_INPUTS) {
 549                 snd_printk(KERN_ERR "hda_generic: Too many items for capture\n");
 550                 return -EINVAL;
 551         }
 552
 553         pinctl = AC_PINCTL_IN_EN;
 554         /* create a proper capture source label */
 555         type = get_input_type(node, &pinctl);
 556         if (! type) {
 557                 /* input as default? */
 558                 if (! (node->pin_ctl & AC_PINCTL_IN_EN))
 559                         return 0;
 560                 type = "Input";
 561         }
 562         label = spec->cap_labels[spec->input_mux.num_items];
 563         strcpy(label, type);
 564         spec->input_mux.items[spec->input_mux.num_items].label = label;
 565
 566         /* unmute the PIN external input */
 567         unmute_input(codec, node, 0); /* index = 0? */
 568         /* set PIN-In enable */
 569         snd_hda_codec_write_cache(codec, node->nid, 0,
 570                                   AC_VERB_SET_PIN_WIDGET_CONTROL, pinctl);
 571
 572         return 1; /* found */
 573 }
 574
 575 /* add a capture source element */
 576 static void add_cap_src(struct hda_gspec *spec, int idx)
 577 {
 578         struct hda_input_mux_item *csrc;
 579         char *buf;
 580         int num, ocap;
 581
 582         num = spec->input_mux.num_items;
 583         csrc = &spec->input_mux.items[num];
 584         buf = spec->cap_labels[num];
 585         for (ocap = 0; ocap < num; ocap++) {
 586                 if (! strcmp(buf, spec->cap_labels[ocap])) {
 587                         /* same label already exists,
 588                          * put the index number to be unique
 589                          */
 590                         sprintf(buf, "%s %d", spec->cap_labels[ocap], num);
 591                         break;
 592                 }
 593         }
 594         csrc->index = idx;
 595         spec->input_mux.num_items++;
 596 }
 597
 598 /*
 599  * parse input
 600  */
 601 static int parse_input_path(struct hda_codec *codec, struct hda_gnode *adc_node)
 602 {
 603         struct hda_gspec *spec = codec->spec;
 604         struct hda_gnode *node;
 605         int i, err;
 606
 607         snd_printdd("AUD_IN = %x\n", adc_node->nid);
 608         clear_check_flags(spec);
 609
 610         // awk added - fixed no recording due to muted widget
 611         unmute_input(codec, adc_node, 0);
 612
 613         /*
 614          * check each connection of the ADC
 615          * if it reaches to a proper input PIN, add the path as the
 616          * input path.
 617          */
 618         /* first, check the direct connections to PIN widgets */
 619         for (i = 0; i < adc_node->nconns; i++) {
 620                 node = hda_get_node(spec, adc_node->conn_list[i]);
 621                 if (node && node->type == AC_WID_PIN) {
 622                         err = parse_adc_sub_nodes(codec, spec, node);
 623                         if (err < 0)
 624                                 return err;
 625                         else if (err > 0)
 626                                 add_cap_src(spec, i);
 627                 }
 628         }
 629         /* ... then check the rests, more complicated connections */
 630         for (i = 0; i < adc_node->nconns; i++) {
 631                 node = hda_get_node(spec, adc_node->conn_list[i]);
 632                 if (node && node->type != AC_WID_PIN) {
 633                         err = parse_adc_sub_nodes(codec, spec, node);
 634                         if (err < 0)
 635                                 return err;
 636                         else if (err > 0)
 637                                 add_cap_src(spec, i);
 638                 }
 639         }
 640
 641         if (! spec->input_mux.num_items)
 642                 return 0; /* no input path found... */
 643
 644         snd_printdd("[Capture Source] NID=0x%x, #SRC=%d\n", adc_node->nid, spec->input_mux.num_items);
 645         for (i = 0; i < spec->input_mux.num_items; i++)
 646                 snd_printdd("  [%s] IDX=0x%x\n", spec->input_mux.items[i].label,
 647                             spec->input_mux.items[i].index);
 648
 649         spec->adc_node = adc_node;
 650         return 1;
 651 }
 652
 653 /*
 654  * parse input
 655  */
 656 static int parse_input(struct hda_codec *codec)
 657 {
 658         struct hda_gspec *spec = codec->spec;
 659         struct hda_gnode *node;
 660         int err;
 661
 662         /*
 663          * At first we look for an audio input widget.
 664          * If it reaches to certain input PINs, we take it as the
 665          * input path.
 666          */
 667         list_for_each_entry(node, &spec->nid_list, list) {
 668                 if (node->wid_caps & AC_WCAP_DIGITAL)
 669                         continue; /* skip SPDIF */
 670                 if (node->type == AC_WID_AUD_IN) {
 671                         err = parse_input_path(codec, node);
 672                         if (err < 0)
 673                                 return err;
 674                         else if (err > 0)
 675                                 return 0;
 676                 }
 677         }
 678         snd_printd("hda_generic: no proper input path found\n");
 679         return 0;
 680 }
 681
 682 #ifdef CONFIG_SND_HDA_POWER_SAVE
 683 static void add_input_loopback(struct hda_codec *codec, hda_nid_t nid,
 684                                int dir, int idx)
 685 {
 686         struct hda_gspec *spec = codec->spec;
 687         struct hda_amp_list *p;
 688
 689         if (spec->num_loopbacks >= MAX_LOOPBACK_AMPS) {
 690                 snd_printk(KERN_ERR "hda_generic: Too many loopback ctls\n");
 691                 return;
 692         }
 693         p = &spec->loopback_list[spec->num_loopbacks++];
 694         p->nid = nid;
 695         p->dir = dir;
 696         p->idx = idx;
 697         spec->loopback.amplist = spec->loopback_list;
 698 }
 699 #else
 700 #define add_input_loopback(codec,nid,dir,idx)
 701 #endif
 702
 703 /*
 704  * create mixer controls if possible
 705  */
 706 static int create_mixer(struct hda_codec *codec, struct hda_gnode *node,
 707                         unsigned int index, const char *type,
 708                         const char *dir_sfx, int is_loopback)
 709 {
 710         char name[32];
 711         int err;
 712         int created = 0;
 713         struct snd_kcontrol_new knew;
 714
 715         if (type)
 716                 sprintf(name, "%s %s Switch", type, dir_sfx);
 717         else
 718                 sprintf(name, "%s Switch", dir_sfx);
 719         if ((node->wid_caps & AC_WCAP_IN_AMP) &&
 720             (node->amp_in_caps & AC_AMPCAP_MUTE)) {
 721                 knew = (struct snd_kcontrol_new)HDA_CODEC_MUTE(name, node->nid, index, HDA_INPUT);
 722                 if (is_loopback)
 723                         add_input_loopback(codec, node->nid, HDA_INPUT, index);
 724                 snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index);
 725                 err = snd_hda_ctl_add(codec, node->nid,
 726                                         snd_ctl_new1(&knew, codec));
 727                 if (err < 0)
 728                         return err;
 729                 created = 1;
 730         } else if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
 731                    (node->amp_out_caps & AC_AMPCAP_MUTE)) {
 732                 knew = (struct snd_kcontrol_new)HDA_CODEC_MUTE(name, node->nid, 0, HDA_OUTPUT);
 733                 if (is_loopback)
 734                         add_input_loopback(codec, node->nid, HDA_OUTPUT, 0);
 735                 snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid);
 736                 err = snd_hda_ctl_add(codec, node->nid,
 737                                         snd_ctl_new1(&knew, codec));
 738                 if (err < 0)
 739                         return err;
 740                 created = 1;
 741         }
 742
 743         if (type)
 744                 sprintf(name, "%s %s Volume", type, dir_sfx);
 745         else
 746                 sprintf(name, "%s Volume", dir_sfx);
 747         if ((node->wid_caps & AC_WCAP_IN_AMP) &&
 748             (node->amp_in_caps & AC_AMPCAP_NUM_STEPS)) {
 749                 knew = (struct snd_kcontrol_new)HDA_CODEC_VOLUME(name, node->nid, index, HDA_INPUT);
 750                 snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index);
 751                 err = snd_hda_ctl_add(codec, node->nid,
 752                                         snd_ctl_new1(&knew, codec));
 753                 if (err < 0)
 754                         return err;
 755                 created = 1;
 756         } else if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
 757                    (node->amp_out_caps & AC_AMPCAP_NUM_STEPS)) {
 758                 knew = (struct snd_kcontrol_new)HDA_CODEC_VOLUME(name, node->nid, 0, HDA_OUTPUT);
 759                 snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid);
 760                 err = snd_hda_ctl_add(codec, node->nid,
 761                                         snd_ctl_new1(&knew, codec));
 762                 if (err < 0)
 763                         return err;
 764                 created = 1;
 765         }
 766
 767         return created;
 768 }
 769
 770 /*
 771  * check whether the controls with the given name and direction suffix already exist
 772  */
 773 static int check_existing_control(struct hda_codec *codec, const char *type, const char *dir)
 774 {
 775         struct snd_ctl_elem_id id;
 776         memset(&id, 0, sizeof(id));
 777         sprintf(id.name, "%s %s Volume", type, dir);
 778         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 779         if (snd_ctl_find_id(codec->bus->card, &id))
 780                 return 1;
 781         sprintf(id.name, "%s %s Switch", type, dir);
 782         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 783         if (snd_ctl_find_id(codec->bus->card, &id))
 784                 return 1;
 785         return 0;
 786 }
 787
 788 /*
 789  * build output mixer controls
 790  */
 791 static int create_output_mixers(struct hda_codec *codec, const char **names)
 792 {
 793         struct hda_gspec *spec = codec->spec;
 794         int i, err;
 795
 796         for (i = 0; i < spec->pcm_vol_nodes; i++) {
 797                 err = create_mixer(codec, spec->pcm_vol[i].node,
 798                                    spec->pcm_vol[i].index,
 799                                    names[i], "Playback", 0);
 800                 if (err < 0)
 801                         return err;
 802         }
 803         return 0;
 804 }
 805
 806 static int build_output_controls(struct hda_codec *codec)
 807 {
 808         struct hda_gspec *spec = codec->spec;
 809         static const char *types_speaker[] = { "Speaker", "Headphone" };
 810         static const char *types_line[] = { "Front", "Headphone" };
 811
 812         switch (spec->pcm_vol_nodes) {
 813         case 1:
 814                 return create_mixer(codec, spec->pcm_vol[0].node,
 815                                     spec->pcm_vol[0].index,
 816                                     "Master", "Playback", 0);
 817         case 2:
 818                 if (defcfg_type(spec->out_pin_node[0]) == AC_JACK_SPEAKER)
 819                         return create_output_mixers(codec, types_speaker);
 820                 else
 821                         return create_output_mixers(codec, types_line);
 822         }
 823         return 0;
 824 }
 825
 826 /* create capture volume/switch */
 827 static int build_input_controls(struct hda_codec *codec)
 828 {
 829         struct hda_gspec *spec = codec->spec;
 830         struct hda_gnode *adc_node = spec->adc_node;
 831         int i, err;
 832         static struct snd_kcontrol_new cap_sel = {
 833                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 834                 .name = "Capture Source",
 835                 .info = capture_source_info,
 836                 .get = capture_source_get,
 837                 .put = capture_source_put,
 838         };
 839
 840         if (! adc_node || ! spec->input_mux.num_items)
 841                 return 0; /* not found */
 842
 843         spec->cur_cap_src = 0;
 844         select_input_connection(codec, adc_node,
 845                                 spec->input_mux.items[0].index);
 846
 847         /* create capture volume and switch controls if the ADC has an amp */
 848         /* do we have only a single item? */
 849         if (spec->input_mux.num_items == 1) {
 850                 err = create_mixer(codec, adc_node,
 851                                    spec->input_mux.items[0].index,
 852                                    NULL, "Capture", 0);
 853                 if (err < 0)
 854                         return err;
 855                 return 0;
 856         }
 857
 858         /* create input MUX if multiple sources are available */
 859         err = snd_hda_ctl_add(codec, spec->adc_node->nid,
 860                               snd_ctl_new1(&cap_sel, codec));
 861         if (err < 0)
 862                 return err;
 863
 864         /* no volume control? */
 865         if (! (adc_node->wid_caps & AC_WCAP_IN_AMP) ||
 866             ! (adc_node->amp_in_caps & AC_AMPCAP_NUM_STEPS))
 867                 return 0;
 868
 869         for (i = 0; i < spec->input_mux.num_items; i++) {
 870                 struct snd_kcontrol_new knew;
 871                 char name[32];
 872                 sprintf(name, "%s Capture Volume",
 873                         spec->input_mux.items[i].label);
 874                 knew = (struct snd_kcontrol_new)
 875                         HDA_CODEC_VOLUME(name, adc_node->nid,
 876                                          spec->input_mux.items[i].index,
 877                                          HDA_INPUT);
 878                 err = snd_hda_ctl_add(codec, adc_node->nid,
 879                                         snd_ctl_new1(&knew, codec));
 880                 if (err < 0)
 881                         return err;
 882         }
 883
 884         return 0;
 885 }
 886
 887
 888 /*
 889  * parse the nodes recursively until reach to the output PIN.
 890  *
 891  * returns 0 - if not found,
 892  *         1 - if found, but no mixer is created
 893  *         2 - if found and mixer was already created, (just skip)
 894  *         a negative error code
 895  */
 896 static int parse_loopback_path(struct hda_codec *codec, struct hda_gspec *spec,
 897                                struct hda_gnode *node, struct hda_gnode *dest_node,
 898                                const char *type)
 899 {
 900         int i, err;
 901
 902         if (node->checked)
 903                 return 0;
 904
 905         node->checked = 1;
 906         if (node == dest_node) {
 907                 /* loopback connection found */
 908                 return 1;
 909         }
 910
 911         for (i = 0; i < node->nconns; i++) {
 912                 struct hda_gnode *child = hda_get_node(spec, node->conn_list[i]);
 913                 if (! child)
 914                         continue;
 915                 err = parse_loopback_path(codec, spec, child, dest_node, type);
 916                 if (err < 0)
 917                         return err;
 918                 else if (err >= 1) {
 919                         if (err == 1) {
 920                                 err = create_mixer(codec, node, i, type,
 921                                                    "Playback", 1);
 922                                 if (err < 0)
 923                                         return err;
 924                                 if (err > 0)
 925                                         return 2; /* ok, created */
 926                                 /* not created, maybe in the lower path */
 927                                 err = 1;
 928                         }
 929                         /* connect and unmute */
 930                         if (node->nconns > 1)
 931                                 select_input_connection(codec, node, i);
 932                         unmute_input(codec, node, i);
 933                         unmute_output(codec, node);
 934                         return err;
 935                 }
 936         }
 937         return 0;
 938 }
 939
 940 /*
 941  * parse the tree and build the loopback controls
 942  */
 943 static int build_loopback_controls(struct hda_codec *codec)
 944 {
 945         struct hda_gspec *spec = codec->spec;
 946         struct hda_gnode *node;
 947         int err;
 948         const char *type;
 949
 950         if (! spec->out_pin_node[0])
 951                 return 0;
 952
 953         list_for_each_entry(node, &spec->nid_list, list) {
 954                 if (node->type != AC_WID_PIN)
 955                         continue;
 956                 /* input capable? */
 957                 if (! (node->pin_caps & AC_PINCAP_IN))
 958                         return 0;
 959                 type = get_input_type(node, NULL);
 960                 if (type) {
 961                         if (check_existing_control(codec, type, "Playback"))
 962                                 continue;
 963                         clear_check_flags(spec);
 964                         err = parse_loopback_path(codec, spec,
 965                                                   spec->out_pin_node[0],
 966                                                   node, type);
 967                         if (err < 0)
 968                                 return err;
 969                         if (! err)
 970                                 continue;
 971                 }
 972         }
 973         return 0;
 974 }
 975
 976 /*
 977  * build mixer controls
 978  */
 979 static int build_generic_controls(struct hda_codec *codec)
 980 {
 981         int err;
 982
 983         if ((err = build_input_controls(codec)) < 0 ||
 984             (err = build_output_controls(codec)) < 0 ||
 985             (err = build_loopback_controls(codec)) < 0)
 986                 return err;
 987
 988         return 0;
 989 }
 990
 991 /*
 992  * PCM
 993  */
 994 static struct hda_pcm_stream generic_pcm_playback = {
 995         .substreams = 1,
 996         .channels_min = 2,
 997         .channels_max = 2,
 998 };
 999
1000 static int generic_pcm2_prepare(struct hda_pcm_stream *hinfo,
1001                                 struct hda_codec *codec,
1002                                 unsigned int stream_tag,
1003                                 unsigned int format,
1004                                 struct snd_pcm_substream *substream)
1005 {
1006         struct hda_gspec *spec = codec->spec;
1007
1008         snd_hda_codec_setup_stream(codec, hinfo->nid, stream_tag, 0, format);
1009         snd_hda_codec_setup_stream(codec, spec->dac_node[1]->nid,
1010                                    stream_tag, 0, format);
1011         return 0;
1012 }
1013
1014 static int generic_pcm2_cleanup(struct hda_pcm_stream *hinfo,
1015                                 struct hda_codec *codec,
1016                                 struct snd_pcm_substream *substream)
1017 {
1018         struct hda_gspec *spec = codec->spec;
1019
1020         snd_hda_codec_cleanup_stream(codec, hinfo->nid);
1021         snd_hda_codec_cleanup_stream(codec, spec->dac_node[1]->nid);
1022         return 0;
1023 }
1024
1025 static int build_generic_pcms(struct hda_codec *codec)
1026 {
1027         struct hda_gspec *spec = codec->spec;
1028         struct hda_pcm *info = &spec->pcm_rec;
1029
1030         if (! spec->dac_node[0] && ! spec->adc_node) {
1031                 snd_printd("hda_generic: no PCM found\n");
1032                 return 0;
1033         }
1034
1035         codec->num_pcms = 1;
1036         codec->pcm_info = info;
1037
1038         info->name = "HDA Generic";
1039         if (spec->dac_node[0]) {
1040                 info->stream[0] = generic_pcm_playback;
1041                 info->stream[0].nid = spec->dac_node[0]->nid;
1042                 if (spec->dac_node[1]) {
1043                         info->stream[0].ops.prepare = generic_pcm2_prepare;
1044                         info->stream[0].ops.cleanup = generic_pcm2_cleanup;
1045                 }
1046         }
1047         if (spec->adc_node) {
1048                 info->stream[1] = generic_pcm_playback;
1049                 info->stream[1].nid = spec->adc_node->nid;
1050         }
1051
1052         return 0;
1053 }
1054
1055 #ifdef CONFIG_SND_HDA_POWER_SAVE
1056 static int generic_check_power_status(struct hda_codec *codec, hda_nid_t nid)
1057 {
1058         struct hda_gspec *spec = codec->spec;
1059         return snd_hda_check_amp_list_power(codec, &spec->loopback, nid);
1060 }
1061 #endif
1062
1063
1064 /*
1065  */
1066 static struct hda_codec_ops generic_patch_ops = {
1067         .build_controls = build_generic_controls,
1068         .build_pcms = build_generic_pcms,
1069         .free = snd_hda_generic_free,
1070 #ifdef CONFIG_SND_HDA_POWER_SAVE
1071         .check_power_status = generic_check_power_status,
1072 #endif
1073 };
1074
1075 /*
1076  * the generic parser
1077  */
1078 int snd_hda_parse_generic_codec(struct hda_codec *codec)
1079 {
1080         struct hda_gspec *spec;
1081         int err;
1082
1083         if(!codec->afg)
1084                 return 0;
1085
1086         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
1087         if (spec == NULL) {
1088                 printk(KERN_ERR "hda_generic: can't allocate spec\n");
1089                 return -ENOMEM;
1090         }
1091         codec->spec = spec;
1092         INIT_LIST_HEAD(&spec->nid_list);
1093
1094         if ((err = build_afg_tree(codec)) < 0)
1095                 goto error;
1096
1097         if ((err = parse_input(codec)) < 0 ||
1098             (err = parse_output(codec)) < 0)
1099                 goto error;
1100
1101         codec->patch_ops = generic_patch_ops;
1102
1103         return 0;
1104
1105  error:
1106         snd_hda_generic_free(codec);
1107         return err;
1108 }
1109 EXPORT_SYMBOL(snd_hda_parse_generic_codec);