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