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 <sound/driver.h>
  24 #include <linux/init.h>
  25 #include <linux/slab.h>
  26 #include <linux/pci.h>
  27 #include <sound/core.h>
  28 #include "hda_codec.h"
  29 #include "hda_local.h"
  30
  31 /* widget node for parsing */
  32 struct hda_gnode {
  33         hda_nid_t nid;          /* NID of this widget */
  34         unsigned short nconns;  /* number of input connections */
  35         hda_nid_t conn_list[HDA_MAX_CONNECTIONS]; /* input connections */
  36         unsigned int wid_caps;  /* widget capabilities */
  37         unsigned char type;     /* widget type */
  38         unsigned char pin_ctl;  /* pin controls */
  39         unsigned char checked;  /* the flag indicates that the node is already parsed */
  40         unsigned int pin_caps;  /* pin widget capabilities */
  41         unsigned int def_cfg;   /* default configuration */
  42         unsigned int amp_out_caps;      /* AMP out capabilities */
  43         unsigned int amp_in_caps;       /* AMP in capabilities */
  44         struct list_head list;
  45 };
  46
  47 /* pathc-specific record */
  48 struct hda_gspec {
  49         struct hda_gnode *dac_node;     /* DAC node */
  50         struct hda_gnode *out_pin_node; /* Output pin (Line-Out) node */
  51         struct hda_gnode *pcm_vol_node; /* Node for PCM volume */
  52         unsigned int pcm_vol_index;     /* connection of PCM volume */
  53
  54         struct hda_gnode *adc_node;     /* ADC node */
  55         struct hda_gnode *cap_vol_node; /* Node for capture volume */
  56         unsigned int cur_cap_src;       /* current capture source */
  57         struct hda_input_mux input_mux;
  58         char cap_labels[HDA_MAX_NUM_INPUTS][16];
  59
  60         unsigned int def_amp_in_caps;
  61         unsigned int def_amp_out_caps;
  62
  63         struct hda_pcm pcm_rec;         /* PCM information */
  64
  65         struct list_head nid_list;      /* list of widgets */
  66 };
  67
  68 /*
  69  * retrieve the default device type from the default config value
  70  */
  71 #define get_defcfg_type(node) (((node)->def_cfg & AC_DEFCFG_DEVICE) >> AC_DEFCFG_DEVICE_SHIFT)
  72 #define get_defcfg_location(node) (((node)->def_cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT)
  73
  74 /*
  75  * destructor
  76  */
  77 static void snd_hda_generic_free(struct hda_codec *codec)
  78 {
  79         struct hda_gspec *spec = codec->spec;
  80         struct list_head *p, *n;
  81
  82         if (! spec)
  83                 return;
  84         /* free all widgets */
  85         list_for_each_safe(p, n, &spec->nid_list) {
  86                 struct hda_gnode *node = list_entry(p, struct hda_gnode, list);
  87                 kfree(node);
  88         }
  89         kfree(spec);
  90 }
  91
  92
  93 /*
  94  * add a new widget node and read its attributes
  95  */
  96 static int add_new_node(struct hda_codec *codec, struct hda_gspec *spec, hda_nid_t nid)
  97 {
  98         struct hda_gnode *node;
  99         int nconns;
 100
 101         node = kcalloc(1, sizeof(*node), GFP_KERNEL);
 102         if (node == NULL)
 103                 return -ENOMEM;
 104         node->nid = nid;
 105         nconns = snd_hda_get_connections(codec, nid, node->conn_list, HDA_MAX_CONNECTIONS);
 106         if (nconns < 0) {
 107                 kfree(node);
 108                 return nconns;
 109         }
 110         node->nconns = nconns;
 111         node->wid_caps = snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
 112         node->type = (node->wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
 113
 114         if (node->type == AC_WID_PIN) {
 115                 node->pin_caps = snd_hda_param_read(codec, node->nid, AC_PAR_PIN_CAP);
 116                 node->pin_ctl = snd_hda_codec_read(codec, node->nid, 0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
 117                 node->def_cfg = snd_hda_codec_read(codec, node->nid, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
 118         }
 119
 120         if (node->wid_caps & AC_WCAP_OUT_AMP) {
 121                 if (node->wid_caps & AC_WCAP_AMP_OVRD)
 122                         node->amp_out_caps = snd_hda_param_read(codec, node->nid, AC_PAR_AMP_OUT_CAP);
 123                 if (! node->amp_out_caps)
 124                         node->amp_out_caps = spec->def_amp_out_caps;
 125         }
 126         if (node->wid_caps & AC_WCAP_IN_AMP) {
 127                 if (node->wid_caps & AC_WCAP_AMP_OVRD)
 128                         node->amp_in_caps = snd_hda_param_read(codec, node->nid, AC_PAR_AMP_IN_CAP);
 129                 if (! node->amp_in_caps)
 130                         node->amp_in_caps = spec->def_amp_in_caps;
 131         }
 132         list_add_tail(&node->list, &spec->nid_list);
 133         return 0;
 134 }
 135
 136 /*
 137  * build the AFG subtree
 138  */
 139 static int build_afg_tree(struct hda_codec *codec)
 140 {
 141         struct hda_gspec *spec = codec->spec;
 142         int i, nodes, err;
 143         hda_nid_t nid;
 144
 145         snd_assert(spec, return -EINVAL);
 146
 147         spec->def_amp_out_caps = snd_hda_param_read(codec, codec->afg, AC_PAR_AMP_OUT_CAP);
 148         spec->def_amp_in_caps = snd_hda_param_read(codec, codec->afg, AC_PAR_AMP_IN_CAP);
 149
 150         nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid);
 151         if (! nid || nodes < 0) {
 152                 printk(KERN_ERR "Invalid AFG subtree\n");
 153                 return -EINVAL;
 154         }
 155
 156         /* parse all nodes belonging to the AFG */
 157         for (i = 0; i < nodes; i++, nid++) {
 158                 if ((err = add_new_node(codec, spec, nid)) < 0)
 159                         return err;
 160         }
 161
 162         return 0;
 163 }
 164
 165
 166 /*
 167  * look for the node record for the given NID
 168  */
 169 /* FIXME: should avoid the braindead linear search */
 170 static struct hda_gnode *hda_get_node(struct hda_gspec *spec, hda_nid_t nid)
 171 {
 172         struct list_head *p;
 173         struct hda_gnode *node;
 174
 175         list_for_each(p, &spec->nid_list) {
 176                 node = list_entry(p, struct hda_gnode, list);
 177                 if (node->nid == nid)
 178                         return node;
 179         }
 180         return NULL;
 181 }
 182
 183 /*
 184  * unmute (and set max vol) the output amplifier
 185  */
 186 static int unmute_output(struct hda_codec *codec, struct hda_gnode *node)
 187 {
 188         unsigned int val, ofs;
 189         snd_printdd("UNMUTE OUT: NID=0x%x\n", node->nid);
 190         val = (node->amp_out_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
 191         ofs = (node->amp_out_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT;
 192         if (val >= ofs)
 193                 val -= ofs;
 194         val |= AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT;
 195         val |= AC_AMP_SET_OUTPUT;
 196         return snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, val);
 197 }
 198
 199 /*
 200  * unmute (and set max vol) the input amplifier
 201  */
 202 static int unmute_input(struct hda_codec *codec, struct hda_gnode *node, unsigned int index)
 203 {
 204         unsigned int val, ofs;
 205         snd_printdd("UNMUTE IN: NID=0x%x IDX=0x%x\n", node->nid, index);
 206         val = (node->amp_in_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
 207         ofs = (node->amp_in_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT;
 208         if (val >= ofs)
 209                 val -= ofs;
 210         val |= AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT;
 211         val |= AC_AMP_SET_INPUT;
 212         // awk added - fixed to allow unmuting of indexed amps
 213         val |= index << AC_AMP_SET_INDEX_SHIFT;
 214         return snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, val);
 215 }
 216
 217 /*
 218  * select the input connection of the given node.
 219  */
 220 static int select_input_connection(struct hda_codec *codec, struct hda_gnode *node,
 221                                    unsigned int index)
 222 {
 223         snd_printdd("CONNECT: NID=0x%x IDX=0x%x\n", node->nid, index);
 224         return snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_CONNECT_SEL, index);
 225 }
 226
 227 /*
 228  * clear checked flag of each node in the node list
 229  */
 230 static void clear_check_flags(struct hda_gspec *spec)
 231 {
 232         struct list_head *p;
 233         struct hda_gnode *node;
 234
 235         list_for_each(p, &spec->nid_list) {
 236                 node = list_entry(p, struct hda_gnode, list);
 237                 node->checked = 0;
 238         }
 239 }
 240
 241 /*
 242  * parse the output path recursively until reach to an audio output widget
 243  *
 244  * returns 0 if not found, 1 if found, or a negative error code.
 245  */
 246 static int parse_output_path(struct hda_codec *codec, struct hda_gspec *spec,
 247                              struct hda_gnode *node)
 248 {
 249         int i, err;
 250         struct hda_gnode *child;
 251
 252         if (node->checked)
 253                 return 0;
 254
 255         node->checked = 1;
 256         if (node->type == AC_WID_AUD_OUT) {
 257                 if (node->wid_caps & AC_WCAP_DIGITAL) {
 258                         snd_printdd("Skip Digital OUT node %x\n", node->nid);
 259                         return 0;
 260                 }
 261                 snd_printdd("AUD_OUT found %x\n", node->nid);
 262                 if (spec->dac_node) {
 263                         /* already DAC node is assigned, just unmute & connect */
 264                         return node == spec->dac_node;
 265                 }
 266                 spec->dac_node = node;
 267                 if (node->wid_caps & AC_WCAP_OUT_AMP) {
 268                         spec->pcm_vol_node = node;
 269                         spec->pcm_vol_index = 0;
 270                 }
 271                 return 1; /* found */
 272         }
 273
 274         for (i = 0; i < node->nconns; i++) {
 275                 child = hda_get_node(spec, node->conn_list[i]);
 276                 if (! child)
 277                         continue;
 278                 err = parse_output_path(codec, spec, child);
 279                 if (err < 0)
 280                         return err;
 281                 else if (err > 0) {
 282                         /* found one,
 283                          * select the path, unmute both input and output
 284                          */
 285                         if (node->nconns > 1)
 286                                 select_input_connection(codec, node, i);
 287                         unmute_input(codec, node, i);
 288                         unmute_output(codec, node);
 289                         if (! spec->pcm_vol_node) {
 290                                 if (node->wid_caps & AC_WCAP_IN_AMP) {
 291                                         spec->pcm_vol_node = node;
 292                                         spec->pcm_vol_index = i;
 293                                 } else if (node->wid_caps & AC_WCAP_OUT_AMP) {
 294                                         spec->pcm_vol_node = node;
 295                                         spec->pcm_vol_index = 0;
 296                                 }
 297                         }
 298                         return 1;
 299                 }
 300         }
 301         return 0;
 302 }
 303
 304 /*
 305  * Look for the output PIN widget with the given jack type
 306  * and parse the output path to that PIN.
 307  *
 308  * Returns the PIN node when the path to DAC is established.
 309  */
 310 static struct hda_gnode *parse_output_jack(struct hda_codec *codec,
 311                                            struct hda_gspec *spec,
 312                                            int jack_type)
 313 {
 314         struct list_head *p;
 315         struct hda_gnode *node;
 316         int err;
 317
 318         list_for_each(p, &spec->nid_list) {
 319                 node = list_entry(p, struct hda_gnode, list);
 320                 if (node->type != AC_WID_PIN)
 321                         continue;
 322                 /* output capable? */
 323                 if (! (node->pin_caps & AC_PINCAP_OUT))
 324                         continue;
 325                 if (jack_type >= 0) {
 326                         if (jack_type != get_defcfg_type(node))
 327                                 continue;
 328                         if (node->wid_caps & AC_WCAP_DIGITAL)
 329                                 continue; /* skip SPDIF */
 330                 } else {
 331                         /* output as default? */
 332                         if (! (node->pin_ctl & AC_PINCTL_OUT_EN))
 333                                 continue;
 334                 }
 335                 clear_check_flags(spec);
 336                 err = parse_output_path(codec, spec, node);
 337                 if (err < 0)
 338                         return NULL;
 339                 else if (err > 0) {
 340                         /* unmute the PIN output */
 341                         unmute_output(codec, node);
 342                         /* set PIN-Out enable */
 343                         snd_hda_codec_write(codec, node->nid, 0,
 344                                             AC_VERB_SET_PIN_WIDGET_CONTROL,
 345                                             AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN);
 346                         return node;
 347                 }
 348         }
 349         return NULL;
 350 }
 351
 352
 353 /*
 354  * parse outputs
 355  */
 356 static int parse_output(struct hda_codec *codec)
 357 {
 358         struct hda_gspec *spec = codec->spec;
 359         struct hda_gnode *node;
 360
 361         /*
 362          * Look for the output PIN widget
 363          */
 364         /* first, look for the line-out pin */
 365         node = parse_output_jack(codec, spec, AC_JACK_LINE_OUT);
 366         if (node) /* found, remember the PIN node */
 367                 spec->out_pin_node = node;
 368         /* look for the HP-out pin */
 369         node = parse_output_jack(codec, spec, AC_JACK_HP_OUT);
 370         if (node) {
 371                 if (! spec->out_pin_node)
 372                         spec->out_pin_node = node;
 373         }
 374
 375         if (! spec->out_pin_node) {
 376                 /* no line-out or HP pins found,
 377                  * then choose for the first output pin
 378                  */
 379                 spec->out_pin_node = parse_output_jack(codec, spec, -1);
 380                 if (! spec->out_pin_node)
 381                         snd_printd("hda_generic: no proper output path found\n");
 382         }
 383
 384         return 0;
 385 }
 386
 387 /*
 388  * input MUX
 389  */
 390
 391 /* control callbacks */
 392 static int capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
 393 {
 394         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 395         struct hda_gspec *spec = codec->spec;
 396         return snd_hda_input_mux_info(&spec->input_mux, uinfo);
 397 }
 398
 399 static int capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
 400 {
 401         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 402         struct hda_gspec *spec = codec->spec;
 403
 404         ucontrol->value.enumerated.item[0] = spec->cur_cap_src;
 405         return 0;
 406 }
 407
 408 static int capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
 409 {
 410         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 411         struct hda_gspec *spec = codec->spec;
 412         return snd_hda_input_mux_put(codec, &spec->input_mux, ucontrol,
 413                                      spec->adc_node->nid, &spec->cur_cap_src);
 414 }
 415
 416 /*
 417  * return the string name of the given input PIN widget
 418  */
 419 static const char *get_input_type(struct hda_gnode *node, unsigned int *pinctl)
 420 {
 421         unsigned int location = get_defcfg_location(node);
 422         switch (get_defcfg_type(node)) {
 423         case AC_JACK_LINE_IN:
 424                 if ((location & 0x0f) == AC_JACK_LOC_FRONT)
 425                         return "Front Line";
 426                 return "Line";
 427         case AC_JACK_CD:
 428                 if (pinctl)
 429                         *pinctl |= AC_PIN_VREF_GRD;
 430                 return "CD";
 431         case AC_JACK_AUX:
 432                 if ((location & 0x0f) == AC_JACK_LOC_FRONT)
 433                         return "Front Aux";
 434                 return "Aux";
 435         case AC_JACK_MIC_IN:
 436                 if ((location & 0x0f) == AC_JACK_LOC_FRONT)
 437                         return "Front Mic";
 438                 return "Mic";
 439         case AC_JACK_SPDIF_IN:
 440                 return "SPDIF";
 441         case AC_JACK_DIG_OTHER_IN:
 442                 return "Digital";
 443         }
 444         return NULL;
 445 }
 446
 447 /*
 448  * parse the nodes recursively until reach to the input PIN
 449  *
 450  * returns 0 if not found, 1 if found, or a negative error code.
 451  */
 452 static int parse_adc_sub_nodes(struct hda_codec *codec, struct hda_gspec *spec,
 453                                struct hda_gnode *node)
 454 {
 455         int i, err;
 456         unsigned int pinctl;
 457         char *label;
 458         const char *type;
 459
 460         if (node->checked)
 461                 return 0;
 462
 463         node->checked = 1;
 464         if (node->type != AC_WID_PIN) {
 465                 for (i = 0; i < node->nconns; i++) {
 466                         struct hda_gnode *child;
 467                         child = hda_get_node(spec, node->conn_list[i]);
 468                         if (! child)
 469                                 continue;
 470                         err = parse_adc_sub_nodes(codec, spec, child);
 471                         if (err < 0)
 472                                 return err;
 473                         if (err > 0) {
 474                                 /* found one,
 475                                  * select the path, unmute both input and output
 476                                  */
 477                                 if (node->nconns > 1)
 478                                         select_input_connection(codec, node, i);
 479                                 unmute_input(codec, node, i);
 480                                 unmute_output(codec, node);
 481                                 return err;
 482                         }
 483                 }
 484                 return 0;
 485         }
 486
 487         /* input capable? */
 488         if (! (node->pin_caps & AC_PINCAP_IN))
 489                 return 0;
 490
 491         if (node->wid_caps & AC_WCAP_DIGITAL)
 492                 return 0; /* skip SPDIF */
 493
 494         if (spec->input_mux.num_items >= HDA_MAX_NUM_INPUTS) {
 495                 snd_printk(KERN_ERR "hda_generic: Too many items for capture\n");
 496                 return -EINVAL;
 497         }
 498
 499         pinctl = AC_PINCTL_IN_EN;
 500         /* create a proper capture source label */
 501         type = get_input_type(node, &pinctl);
 502         if (! type) {
 503                 /* input as default? */
 504                 if (! (node->pin_ctl & AC_PINCTL_IN_EN))
 505                         return 0;
 506                 type = "Input";
 507         }
 508         label = spec->cap_labels[spec->input_mux.num_items];
 509         strcpy(label, type);
 510         spec->input_mux.items[spec->input_mux.num_items].label = label;
 511
 512         /* unmute the PIN external input */
 513         unmute_input(codec, node, 0); /* index = 0? */
 514         /* set PIN-In enable */
 515         snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_PIN_WIDGET_CONTROL, pinctl);
 516
 517         return 1; /* found */
 518 }
 519
 520 /*
 521  * parse input
 522  */
 523 static int parse_input_path(struct hda_codec *codec, struct hda_gnode *adc_node)
 524 {
 525         struct hda_gspec *spec = codec->spec;
 526         struct hda_gnode *node;
 527         int i, err;
 528
 529         snd_printdd("AUD_IN = %x\n", adc_node->nid);
 530         clear_check_flags(spec);
 531
 532         // awk added - fixed no recording due to muted widget
 533         unmute_input(codec, adc_node, 0);
 534
 535         /*
 536          * check each connection of the ADC
 537          * if it reaches to a proper input PIN, add the path as the
 538          * input path.
 539          */
 540         for (i = 0; i < adc_node->nconns; i++) {
 541                 node = hda_get_node(spec, adc_node->conn_list[i]);
 542                 if (! node)
 543                         continue;
 544                 err = parse_adc_sub_nodes(codec, spec, node);
 545                 if (err < 0)
 546                         return err;
 547                 else if (err > 0) {
 548                         struct hda_input_mux_item *csrc = &spec->input_mux.items[spec->input_mux.num_items];
 549                         char *buf = spec->cap_labels[spec->input_mux.num_items];
 550                         int ocap;
 551                         for (ocap = 0; ocap < spec->input_mux.num_items; ocap++) {
 552                                 if (! strcmp(buf, spec->cap_labels[ocap])) {
 553                                         /* same label already exists,
 554                                          * put the index number to be unique
 555                                          */
 556                                         sprintf(buf, "%s %d", spec->cap_labels[ocap],
 557                                                 spec->input_mux.num_items);
 558                                 }
 559                         }
 560                         csrc->index = i;
 561                         spec->input_mux.num_items++;
 562                 }
 563         }
 564
 565         if (! spec->input_mux.num_items)
 566                 return 0; /* no input path found... */
 567
 568         snd_printdd("[Capture Source] NID=0x%x, #SRC=%d\n", adc_node->nid, spec->input_mux.num_items);
 569         for (i = 0; i < spec->input_mux.num_items; i++)
 570                 snd_printdd("  [%s] IDX=0x%x\n", spec->input_mux.items[i].label,
 571                             spec->input_mux.items[i].index);
 572
 573         spec->adc_node = adc_node;
 574         return 1;
 575 }
 576
 577 /*
 578  * parse input
 579  */
 580 static int parse_input(struct hda_codec *codec)
 581 {
 582         struct hda_gspec *spec = codec->spec;
 583         struct list_head *p;
 584         struct hda_gnode *node;
 585         int err;
 586
 587         /*
 588          * At first we look for an audio input widget.
 589          * If it reaches to certain input PINs, we take it as the
 590          * input path.
 591          */
 592         list_for_each(p, &spec->nid_list) {
 593                 node = list_entry(p, struct hda_gnode, list);
 594                 if (node->wid_caps & AC_WCAP_DIGITAL)
 595                         continue; /* skip SPDIF */
 596                 if (node->type == AC_WID_AUD_IN) {
 597                         err = parse_input_path(codec, node);
 598                         if (err < 0)
 599                                 return err;
 600                         else if (err > 0)
 601                                 return 0;
 602                 }
 603         }
 604         snd_printd("hda_generic: no proper input path found\n");
 605         return 0;
 606 }
 607
 608 /*
 609  * create mixer controls if possible
 610  */
 611 #define DIR_OUT         0x1
 612 #define DIR_IN          0x2
 613
 614 static int create_mixer(struct hda_codec *codec, struct hda_gnode *node,
 615                         unsigned int index, const char *type, const char *dir_sfx)
 616 {
 617         char name[32];
 618         int err;
 619         int created = 0;
 620         snd_kcontrol_new_t knew;
 621
 622         if (type)
 623                 sprintf(name, "%s %s Switch", type, dir_sfx);
 624         else
 625                 sprintf(name, "%s Switch", dir_sfx);
 626         if ((node->wid_caps & AC_WCAP_IN_AMP) &&
 627             (node->amp_in_caps & AC_AMPCAP_MUTE)) {
 628                 knew = (snd_kcontrol_new_t)HDA_CODEC_MUTE(name, node->nid, index, HDA_INPUT);
 629                 snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index);
 630                 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0)
 631                         return err;
 632                 created = 1;
 633         } else if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
 634                    (node->amp_out_caps & AC_AMPCAP_MUTE)) {
 635                 knew = (snd_kcontrol_new_t)HDA_CODEC_MUTE(name, node->nid, 0, HDA_OUTPUT);
 636                 snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid);
 637                 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0)
 638                         return err;
 639                 created = 1;
 640         }
 641
 642         if (type)
 643                 sprintf(name, "%s %s Volume", type, dir_sfx);
 644         else
 645                 sprintf(name, "%s Volume", dir_sfx);
 646         if ((node->wid_caps & AC_WCAP_IN_AMP) &&
 647             (node->amp_in_caps & AC_AMPCAP_NUM_STEPS)) {
 648                 knew = (snd_kcontrol_new_t)HDA_CODEC_VOLUME(name, node->nid, index, HDA_INPUT);
 649                 snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index);
 650                 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0)
 651                         return err;
 652                 created = 1;
 653         } else if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
 654                    (node->amp_out_caps & AC_AMPCAP_NUM_STEPS)) {
 655                 knew = (snd_kcontrol_new_t)HDA_CODEC_VOLUME(name, node->nid, 0, HDA_OUTPUT);
 656                 snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid);
 657                 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0)
 658                         return err;
 659                 created = 1;
 660         }
 661
 662         return created;
 663 }
 664
 665 /*
 666  * check whether the controls with the given name and direction suffix already exist
 667  */
 668 static int check_existing_control(struct hda_codec *codec, const char *type, const char *dir)
 669 {
 670         snd_ctl_elem_id_t id;
 671         memset(&id, 0, sizeof(id));
 672         sprintf(id.name, "%s %s Volume", type, dir);
 673         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 674         if (snd_ctl_find_id(codec->bus->card, &id))
 675                 return 1;
 676         sprintf(id.name, "%s %s Switch", type, dir);
 677         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 678         if (snd_ctl_find_id(codec->bus->card, &id))
 679                 return 1;
 680         return 0;
 681 }
 682
 683 /*
 684  * build output mixer controls
 685  */
 686 static int build_output_controls(struct hda_codec *codec)
 687 {
 688         struct hda_gspec *spec = codec->spec;
 689         int err;
 690
 691         err = create_mixer(codec, spec->pcm_vol_node, spec->pcm_vol_index,
 692                            "PCM", "Playback");
 693         if (err < 0)
 694                 return err;
 695         return 0;
 696 }
 697
 698 /* create capture volume/switch */
 699 static int build_input_controls(struct hda_codec *codec)
 700 {
 701         struct hda_gspec *spec = codec->spec;
 702         struct hda_gnode *adc_node = spec->adc_node;
 703         int err;
 704
 705         if (! adc_node)
 706                 return 0; /* not found */
 707
 708         /* create capture volume and switch controls if the ADC has an amp */
 709         err = create_mixer(codec, adc_node, 0, NULL, "Capture");
 710
 711         /* create input MUX if multiple sources are available */
 712         if (spec->input_mux.num_items > 1) {
 713                 static snd_kcontrol_new_t cap_sel = {
 714                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 715                         .name = "Capture Source",
 716                         .info = capture_source_info,
 717                         .get = capture_source_get,
 718                         .put = capture_source_put,
 719                 };
 720                 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&cap_sel, codec))) < 0)
 721                         return err;
 722                 spec->cur_cap_src = 0;
 723                 select_input_connection(codec, adc_node, spec->input_mux.items[0].index);
 724         }
 725         return 0;
 726 }
 727
 728
 729 /*
 730  * parse the nodes recursively until reach to the output PIN.
 731  *
 732  * returns 0 - if not found,
 733  *         1 - if found, but no mixer is created
 734  *         2 - if found and mixer was already created, (just skip)
 735  *         a negative error code
 736  */
 737 static int parse_loopback_path(struct hda_codec *codec, struct hda_gspec *spec,
 738                                struct hda_gnode *node, struct hda_gnode *dest_node,
 739                                const char *type)
 740 {
 741         int i, err;
 742
 743         if (node->checked)
 744                 return 0;
 745
 746         node->checked = 1;
 747         if (node == dest_node) {
 748                 /* loopback connection found */
 749                 return 1;
 750         }
 751
 752         for (i = 0; i < node->nconns; i++) {
 753                 struct hda_gnode *child = hda_get_node(spec, node->conn_list[i]);
 754                 if (! child)
 755                         continue;
 756                 err = parse_loopback_path(codec, spec, child, dest_node, type);
 757                 if (err < 0)
 758                         return err;
 759                 else if (err >= 1) {
 760                         if (err == 1) {
 761                                 err = create_mixer(codec, node, i, type, "Playback");
 762                                 if (err < 0)
 763                                         return err;
 764                                 if (err > 0)
 765                                         return 2; /* ok, created */
 766                                 /* not created, maybe in the lower path */
 767                                 err = 1;
 768                         }
 769                         /* connect and unmute */
 770                         if (node->nconns > 1)
 771                                 select_input_connection(codec, node, i);
 772                         unmute_input(codec, node, i);
 773                         unmute_output(codec, node);
 774                         return err;
 775                 }
 776         }
 777         return 0;
 778 }
 779
 780 /*
 781  * parse the tree and build the loopback controls
 782  */
 783 static int build_loopback_controls(struct hda_codec *codec)
 784 {
 785         struct hda_gspec *spec = codec->spec;
 786         struct list_head *p;
 787         struct hda_gnode *node;
 788         int err;
 789         const char *type;
 790
 791         if (! spec->out_pin_node)
 792                 return 0;
 793
 794         list_for_each(p, &spec->nid_list) {
 795                 node = list_entry(p, struct hda_gnode, list);
 796                 if (node->type != AC_WID_PIN)
 797                         continue;
 798                 /* input capable? */
 799                 if (! (node->pin_caps & AC_PINCAP_IN))
 800                         return 0;
 801                 type = get_input_type(node, NULL);
 802                 if (type) {
 803                         if (check_existing_control(codec, type, "Playback"))
 804                                 continue;
 805                         clear_check_flags(spec);
 806                         err = parse_loopback_path(codec, spec, spec->out_pin_node,
 807                                                   node, type);
 808                         if (err < 0)
 809                                 return err;
 810                         if (! err)
 811                                 continue;
 812                 }
 813         }
 814         return 0;
 815 }
 816
 817 /*
 818  * build mixer controls
 819  */
 820 static int build_generic_controls(struct hda_codec *codec)
 821 {
 822         int err;
 823
 824         if ((err = build_input_controls(codec)) < 0 ||
 825             (err = build_output_controls(codec)) < 0 ||
 826             (err = build_loopback_controls(codec)) < 0)
 827                 return err;
 828
 829         return 0;
 830 }
 831
 832 /*
 833  * PCM
 834  */
 835 static struct hda_pcm_stream generic_pcm_playback = {
 836         .substreams = 1,
 837         .channels_min = 2,
 838         .channels_max = 2,
 839 };
 840
 841 static int build_generic_pcms(struct hda_codec *codec)
 842 {
 843         struct hda_gspec *spec = codec->spec;
 844         struct hda_pcm *info = &spec->pcm_rec;
 845
 846         if (! spec->dac_node && ! spec->adc_node) {
 847                 snd_printd("hda_generic: no PCM found\n");
 848                 return 0;
 849         }
 850
 851         codec->num_pcms = 1;
 852         codec->pcm_info = info;
 853
 854         info->name = "HDA Generic";
 855         if (spec->dac_node) {
 856                 info->stream[0] = generic_pcm_playback;
 857                 info->stream[0].nid = spec->dac_node->nid;
 858         }
 859         if (spec->adc_node) {
 860                 info->stream[1] = generic_pcm_playback;
 861                 info->stream[1].nid = spec->adc_node->nid;
 862         }
 863
 864         return 0;
 865 }
 866
 867
 868 /*
 869  */
 870 static struct hda_codec_ops generic_patch_ops = {
 871         .build_controls = build_generic_controls,
 872         .build_pcms = build_generic_pcms,
 873         .free = snd_hda_generic_free,
 874 };
 875
 876 /*
 877  * the generic parser
 878  */
 879 int snd_hda_parse_generic_codec(struct hda_codec *codec)
 880 {
 881         struct hda_gspec *spec;
 882         int err;
 883
 884         spec = kcalloc(1, sizeof(*spec), GFP_KERNEL);
 885         if (spec == NULL) {
 886                 printk(KERN_ERR "hda_generic: can't allocate spec\n");
 887                 return -ENOMEM;
 888         }
 889         codec->spec = spec;
 890         INIT_LIST_HEAD(&spec->nid_list);
 891
 892         if ((err = build_afg_tree(codec)) < 0)
 893                 goto error;
 894
 895         if ((err = parse_input(codec)) < 0 ||
 896             (err = parse_output(codec)) < 0)
 897                 goto error;
 898
 899         codec->patch_ops = generic_patch_ops;
 900
 901         return 0;
 902
 903  error:
 904         snd_hda_generic_free(codec);
 905         return err;
 906 }