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; 36 hda_nid_t slist[2]; /* temporay list */ 37 unsigned int wid_caps; /* widget capabilities */ 38 unsigned char type; /* widget type */ 39 unsigned char pin_ctl; /* pin controls */ 40 unsigned char checked; /* the flag indicates that the node is already parsed */ 41 unsigned int pin_caps; /* pin widget capabilities */ 42 unsigned int def_cfg; /* default configuration */ 43 unsigned int amp_out_caps; /* AMP out capabilities */ 44 unsigned int amp_in_caps; /* AMP in capabilities */ 45 struct list_head list; 46 }; 47 48 /* patch-specific record */ 49 struct hda_gspec { 50 struct hda_gnode *dac_node; /* DAC node */ 51 struct hda_gnode *out_pin_node; /* Output pin (Line-Out) node */ 52 struct hda_gnode *pcm_vol_node; /* Node for PCM volume */ 53 unsigned int pcm_vol_index; /* connection of PCM volume */ 54 55 struct hda_gnode *adc_node; /* ADC node */ 56 struct hda_gnode *cap_vol_node; /* Node for capture volume */ 57 unsigned int cur_cap_src; /* current capture source */ 58 struct hda_input_mux input_mux; 59 char cap_labels[HDA_MAX_NUM_INPUTS][16]; 60 61 unsigned int def_amp_in_caps; 62 unsigned int def_amp_out_caps; 63 64 struct hda_pcm pcm_rec; /* PCM information */ 65 66 struct list_head nid_list; /* list of widgets */ 67 }; 68 69 /* 70 * retrieve the default device type from the default config value 71 */ 72 #define defcfg_type(node) (((node)->def_cfg & AC_DEFCFG_DEVICE) >> AC_DEFCFG_DEVICE_SHIFT) 73 #define defcfg_location(node) (((node)->def_cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT) 74 75 /* 76 * destructor 77 */ 78 static void snd_hda_generic_free(struct hda_codec *codec) 79 { 80 struct hda_gspec *spec = codec->spec; 81 struct list_head *p, *n; 82 83 if (! spec) 84 return; 85 /* free all widgets */ 86 list_for_each_safe(p, n, &spec->nid_list) { 87 struct hda_gnode *node = list_entry(p, struct hda_gnode, list); 88 if (node->conn_list != node->slist) 89 kfree(node->conn_list); 90 kfree(node); 91 } 92 kfree(spec); 93 } 94 95 96 /* 97 * add a new widget node and read its attributes 98 */ 99 static int add_new_node(struct hda_codec *codec, struct hda_gspec *spec, hda_nid_t nid) 100 { 101 struct hda_gnode *node; 102 int nconns; 103 hda_nid_t conn_list[HDA_MAX_CONNECTIONS]; 104 105 node = kzalloc(sizeof(*node), GFP_KERNEL); 106 if (node == NULL) 107 return -ENOMEM; 108 node->nid = nid; 109 nconns = snd_hda_get_connections(codec, nid, conn_list, 110 HDA_MAX_CONNECTIONS); 111 if (nconns < 0) { 112 kfree(node); 113 return nconns; 114 } 115 if (nconns <= ARRAY_SIZE(node->slist)) 116 node->conn_list = node->slist; 117 else { 118 node->conn_list = kmalloc(sizeof(hda_nid_t) * nconns, 119 GFP_KERNEL); 120 if (! node->conn_list) { 121 snd_printk(KERN_ERR "hda-generic: cannot malloc\n"); 122 kfree(node); 123 return -ENOMEM; 124 } 125 } 126 memcpy(node->conn_list, conn_list, nconns); 127 node->nconns = nconns; 128 node->wid_caps = get_wcaps(codec, nid); 129 node->type = (node->wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT; 130 131 if (node->type == AC_WID_PIN) { 132 node->pin_caps = snd_hda_param_read(codec, node->nid, AC_PAR_PIN_CAP); 133 node->pin_ctl = snd_hda_codec_read(codec, node->nid, 0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0); 134 node->def_cfg = snd_hda_codec_read(codec, node->nid, 0, AC_VERB_GET_CONFIG_DEFAULT, 0); 135 } 136 137 if (node->wid_caps & AC_WCAP_OUT_AMP) { 138 if (node->wid_caps & AC_WCAP_AMP_OVRD) 139 node->amp_out_caps = snd_hda_param_read(codec, node->nid, AC_PAR_AMP_OUT_CAP); 140 if (! node->amp_out_caps) 141 node->amp_out_caps = spec->def_amp_out_caps; 142 } 143 if (node->wid_caps & AC_WCAP_IN_AMP) { 144 if (node->wid_caps & AC_WCAP_AMP_OVRD) 145 node->amp_in_caps = snd_hda_param_read(codec, node->nid, AC_PAR_AMP_IN_CAP); 146 if (! node->amp_in_caps) 147 node->amp_in_caps = spec->def_amp_in_caps; 148 } 149 list_add_tail(&node->list, &spec->nid_list); 150 return 0; 151 } 152 153 /* 154 * build the AFG subtree 155 */ 156 static int build_afg_tree(struct hda_codec *codec) 157 { 158 struct hda_gspec *spec = codec->spec; 159 int i, nodes, err; 160 hda_nid_t nid; 161 162 snd_assert(spec, return -EINVAL); 163 164 spec->def_amp_out_caps = snd_hda_param_read(codec, codec->afg, AC_PAR_AMP_OUT_CAP); 165 spec->def_amp_in_caps = snd_hda_param_read(codec, codec->afg, AC_PAR_AMP_IN_CAP); 166 167 nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid); 168 if (! nid || nodes < 0) { 169 printk(KERN_ERR "Invalid AFG subtree\n"); 170 return -EINVAL; 171 } 172 173 /* parse all nodes belonging to the AFG */ 174 for (i = 0; i < nodes; i++, nid++) { 175 if ((err = add_new_node(codec, spec, nid)) < 0) 176 return err; 177 } 178 179 return 0; 180 } 181 182 183 /* 184 * look for the node record for the given NID 185 */ 186 /* FIXME: should avoid the braindead linear search */ 187 static struct hda_gnode *hda_get_node(struct hda_gspec *spec, hda_nid_t nid) 188 { 189 struct list_head *p; 190 struct hda_gnode *node; 191 192 list_for_each(p, &spec->nid_list) { 193 node = list_entry(p, struct hda_gnode, list); 194 if (node->nid == nid) 195 return node; 196 } 197 return NULL; 198 } 199 200 /* 201 * unmute (and set max vol) the output amplifier 202 */ 203 static int unmute_output(struct hda_codec *codec, struct hda_gnode *node) 204 { 205 unsigned int val, ofs; 206 snd_printdd("UNMUTE OUT: NID=0x%x\n", node->nid); 207 val = (node->amp_out_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT; 208 ofs = (node->amp_out_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT; 209 if (val >= ofs) 210 val -= ofs; 211 val |= AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT; 212 val |= AC_AMP_SET_OUTPUT; 213 return snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, val); 214 } 215 216 /* 217 * unmute (and set max vol) the input amplifier 218 */ 219 static int unmute_input(struct hda_codec *codec, struct hda_gnode *node, unsigned int index) 220 { 221 unsigned int val, ofs; 222 snd_printdd("UNMUTE IN: NID=0x%x IDX=0x%x\n", node->nid, index); 223 val = (node->amp_in_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT; 224 ofs = (node->amp_in_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT; 225 if (val >= ofs) 226 val -= ofs; 227 val |= AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT; 228 val |= AC_AMP_SET_INPUT; 229 // awk added - fixed to allow unmuting of indexed amps 230 val |= index << AC_AMP_SET_INDEX_SHIFT; 231 return snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, val); 232 } 233 234 /* 235 * select the input connection of the given node. 236 */ 237 static int select_input_connection(struct hda_codec *codec, struct hda_gnode *node, 238 unsigned int index) 239 { 240 snd_printdd("CONNECT: NID=0x%x IDX=0x%x\n", node->nid, index); 241 return snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_CONNECT_SEL, index); 242 } 243 244 /* 245 * clear checked flag of each node in the node list 246 */ 247 static void clear_check_flags(struct hda_gspec *spec) 248 { 249 struct list_head *p; 250 struct hda_gnode *node; 251 252 list_for_each(p, &spec->nid_list) { 253 node = list_entry(p, struct hda_gnode, list); 254 node->checked = 0; 255 } 256 } 257 258 /* 259 * parse the output path recursively until reach to an audio output widget 260 * 261 * returns 0 if not found, 1 if found, or a negative error code. 262 */ 263 static int parse_output_path(struct hda_codec *codec, struct hda_gspec *spec, 264 struct hda_gnode *node) 265 { 266 int i, err; 267 struct hda_gnode *child; 268 269 if (node->checked) 270 return 0; 271 272 node->checked = 1; 273 if (node->type == AC_WID_AUD_OUT) { 274 if (node->wid_caps & AC_WCAP_DIGITAL) { 275 snd_printdd("Skip Digital OUT node %x\n", node->nid); 276 return 0; 277 } 278 snd_printdd("AUD_OUT found %x\n", node->nid); 279 if (spec->dac_node) { 280 /* already DAC node is assigned, just unmute & connect */ 281 return node == spec->dac_node; 282 } 283 spec->dac_node = node; 284 if (node->wid_caps & AC_WCAP_OUT_AMP) { 285 spec->pcm_vol_node = node; 286 spec->pcm_vol_index = 0; 287 } 288 return 1; /* found */ 289 } 290 291 for (i = 0; i < node->nconns; i++) { 292 child = hda_get_node(spec, node->conn_list[i]); 293 if (! child) 294 continue; 295 err = parse_output_path(codec, spec, child); 296 if (err < 0) 297 return err; 298 else if (err > 0) { 299 /* found one, 300 * select the path, unmute both input and output 301 */ 302 if (node->nconns > 1) 303 select_input_connection(codec, node, i); 304 unmute_input(codec, node, i); 305 unmute_output(codec, node); 306 if (! spec->pcm_vol_node) { 307 if (node->wid_caps & AC_WCAP_IN_AMP) { 308 spec->pcm_vol_node = node; 309 spec->pcm_vol_index = i; 310 } else if (node->wid_caps & AC_WCAP_OUT_AMP) { 311 spec->pcm_vol_node = node; 312 spec->pcm_vol_index = 0; 313 } 314 } 315 return 1; 316 } 317 } 318 return 0; 319 } 320 321 /* 322 * Look for the output PIN widget with the given jack type 323 * and parse the output path to that PIN. 324 * 325 * Returns the PIN node when the path to DAC is established. 326 */ 327 static struct hda_gnode *parse_output_jack(struct hda_codec *codec, 328 struct hda_gspec *spec, 329 int jack_type) 330 { 331 struct list_head *p; 332 struct hda_gnode *node; 333 int err; 334 335 list_for_each(p, &spec->nid_list) { 336 node = list_entry(p, struct hda_gnode, list); 337 if (node->type != AC_WID_PIN) 338 continue; 339 /* output capable? */ 340 if (! (node->pin_caps & AC_PINCAP_OUT)) 341 continue; 342 if (jack_type >= 0) { 343 if (jack_type != defcfg_type(node)) 344 continue; 345 if (node->wid_caps & AC_WCAP_DIGITAL) 346 continue; /* skip SPDIF */ 347 } else { 348 /* output as default? */ 349 if (! (node->pin_ctl & AC_PINCTL_OUT_EN)) 350 continue; 351 } 352 clear_check_flags(spec); 353 err = parse_output_path(codec, spec, node); 354 if (err < 0) 355 return NULL; 356 else if (err > 0) { 357 /* unmute the PIN output */ 358 unmute_output(codec, node); 359 /* set PIN-Out enable */ 360 snd_hda_codec_write(codec, node->nid, 0, 361 AC_VERB_SET_PIN_WIDGET_CONTROL, 362 AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN); 363 return node; 364 } 365 } 366 return NULL; 367 } 368 369 370 /* 371 * parse outputs 372 */ 373 static int parse_output(struct hda_codec *codec) 374 { 375 struct hda_gspec *spec = codec->spec; 376 struct hda_gnode *node; 377 378 /* 379 * Look for the output PIN widget 380 */ 381 /* first, look for the line-out pin */ 382 node = parse_output_jack(codec, spec, AC_JACK_LINE_OUT); 383 if (node) /* found, remember the PIN node */ 384 spec->out_pin_node = node; 385 /* look for the HP-out pin */ 386 node = parse_output_jack(codec, spec, AC_JACK_HP_OUT); 387 if (node) { 388 if (! spec->out_pin_node) 389 spec->out_pin_node = node; 390 } 391 392 if (! spec->out_pin_node) { 393 /* no line-out or HP pins found, 394 * then choose for the first output pin 395 */ 396 spec->out_pin_node = parse_output_jack(codec, spec, -1); 397 if (! spec->out_pin_node) 398 snd_printd("hda_generic: no proper output path found\n"); 399 } 400 401 return 0; 402 } 403 404 /* 405 * input MUX 406 */ 407 408 /* control callbacks */ 409 static int capture_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 410 { 411 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 412 struct hda_gspec *spec = codec->spec; 413 return snd_hda_input_mux_info(&spec->input_mux, uinfo); 414 } 415 416 static int capture_source_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 417 { 418 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 419 struct hda_gspec *spec = codec->spec; 420 421 ucontrol->value.enumerated.item[0] = spec->cur_cap_src; 422 return 0; 423 } 424 425 static int capture_source_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 426 { 427 struct hda_codec *codec = snd_kcontrol_chip(kcontrol); 428 struct hda_gspec *spec = codec->spec; 429 return snd_hda_input_mux_put(codec, &spec->input_mux, ucontrol, 430 spec->adc_node->nid, &spec->cur_cap_src); 431 } 432 433 /* 434 * return the string name of the given input PIN widget 435 */ 436 static const char *get_input_type(struct hda_gnode *node, unsigned int *pinctl) 437 { 438 unsigned int location = defcfg_location(node); 439 switch (defcfg_type(node)) { 440 case AC_JACK_LINE_IN: 441 if ((location & 0x0f) == AC_JACK_LOC_FRONT) 442 return "Front Line"; 443 return "Line"; 444 case AC_JACK_CD: 445 if (pinctl) 446 *pinctl |= AC_PINCTL_VREF_GRD; 447 return "CD"; 448 case AC_JACK_AUX: 449 if ((location & 0x0f) == AC_JACK_LOC_FRONT) 450 return "Front Aux"; 451 return "Aux"; 452 case AC_JACK_MIC_IN: 453 if ((location & 0x0f) == AC_JACK_LOC_FRONT) 454 return "Front Mic"; 455 return "Mic"; 456 case AC_JACK_SPDIF_IN: 457 return "SPDIF"; 458 case AC_JACK_DIG_OTHER_IN: 459 return "Digital"; 460 } 461 return NULL; 462 } 463 464 /* 465 * parse the nodes recursively until reach to the input PIN 466 * 467 * returns 0 if not found, 1 if found, or a negative error code. 468 */ 469 static int parse_adc_sub_nodes(struct hda_codec *codec, struct hda_gspec *spec, 470 struct hda_gnode *node) 471 { 472 int i, err; 473 unsigned int pinctl; 474 char *label; 475 const char *type; 476 477 if (node->checked) 478 return 0; 479 480 node->checked = 1; 481 if (node->type != AC_WID_PIN) { 482 for (i = 0; i < node->nconns; i++) { 483 struct hda_gnode *child; 484 child = hda_get_node(spec, node->conn_list[i]); 485 if (! child) 486 continue; 487 err = parse_adc_sub_nodes(codec, spec, child); 488 if (err < 0) 489 return err; 490 if (err > 0) { 491 /* found one, 492 * select the path, unmute both input and output 493 */ 494 if (node->nconns > 1) 495 select_input_connection(codec, node, i); 496 unmute_input(codec, node, i); 497 unmute_output(codec, node); 498 return err; 499 } 500 } 501 return 0; 502 } 503 504 /* input capable? */ 505 if (! (node->pin_caps & AC_PINCAP_IN)) 506 return 0; 507 508 if (node->wid_caps & AC_WCAP_DIGITAL) 509 return 0; /* skip SPDIF */ 510 511 if (spec->input_mux.num_items >= HDA_MAX_NUM_INPUTS) { 512 snd_printk(KERN_ERR "hda_generic: Too many items for capture\n"); 513 return -EINVAL; 514 } 515 516 pinctl = AC_PINCTL_IN_EN; 517 /* create a proper capture source label */ 518 type = get_input_type(node, &pinctl); 519 if (! type) { 520 /* input as default? */ 521 if (! (node->pin_ctl & AC_PINCTL_IN_EN)) 522 return 0; 523 type = "Input"; 524 } 525 label = spec->cap_labels[spec->input_mux.num_items]; 526 strcpy(label, type); 527 spec->input_mux.items[spec->input_mux.num_items].label = label; 528 529 /* unmute the PIN external input */ 530 unmute_input(codec, node, 0); /* index = 0? */ 531 /* set PIN-In enable */ 532 snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_PIN_WIDGET_CONTROL, pinctl); 533 534 return 1; /* found */ 535 } 536 537 /* 538 * parse input 539 */ 540 static int parse_input_path(struct hda_codec *codec, struct hda_gnode *adc_node) 541 { 542 struct hda_gspec *spec = codec->spec; 543 struct hda_gnode *node; 544 int i, err; 545 546 snd_printdd("AUD_IN = %x\n", adc_node->nid); 547 clear_check_flags(spec); 548 549 // awk added - fixed no recording due to muted widget 550 unmute_input(codec, adc_node, 0); 551 552 /* 553 * check each connection of the ADC 554 * if it reaches to a proper input PIN, add the path as the 555 * input path. 556 */ 557 for (i = 0; i < adc_node->nconns; i++) { 558 node = hda_get_node(spec, adc_node->conn_list[i]); 559 if (! node) 560 continue; 561 err = parse_adc_sub_nodes(codec, spec, node); 562 if (err < 0) 563 return err; 564 else if (err > 0) { 565 struct hda_input_mux_item *csrc = &spec->input_mux.items[spec->input_mux.num_items]; 566 char *buf = spec->cap_labels[spec->input_mux.num_items]; 567 int ocap; 568 for (ocap = 0; ocap < spec->input_mux.num_items; ocap++) { 569 if (! strcmp(buf, spec->cap_labels[ocap])) { 570 /* same label already exists, 571 * put the index number to be unique 572 */ 573 sprintf(buf, "%s %d", spec->cap_labels[ocap], 574 spec->input_mux.num_items); 575 } 576 } 577 csrc->index = i; 578 spec->input_mux.num_items++; 579 } 580 } 581 582 if (! spec->input_mux.num_items) 583 return 0; /* no input path found... */ 584 585 snd_printdd("[Capture Source] NID=0x%x, #SRC=%d\n", adc_node->nid, spec->input_mux.num_items); 586 for (i = 0; i < spec->input_mux.num_items; i++) 587 snd_printdd(" [%s] IDX=0x%x\n", spec->input_mux.items[i].label, 588 spec->input_mux.items[i].index); 589 590 spec->adc_node = adc_node; 591 return 1; 592 } 593 594 /* 595 * parse input 596 */ 597 static int parse_input(struct hda_codec *codec) 598 { 599 struct hda_gspec *spec = codec->spec; 600 struct list_head *p; 601 struct hda_gnode *node; 602 int err; 603 604 /* 605 * At first we look for an audio input widget. 606 * If it reaches to certain input PINs, we take it as the 607 * input path. 608 */ 609 list_for_each(p, &spec->nid_list) { 610 node = list_entry(p, struct hda_gnode, list); 611 if (node->wid_caps & AC_WCAP_DIGITAL) 612 continue; /* skip SPDIF */ 613 if (node->type == AC_WID_AUD_IN) { 614 err = parse_input_path(codec, node); 615 if (err < 0) 616 return err; 617 else if (err > 0) 618 return 0; 619 } 620 } 621 snd_printd("hda_generic: no proper input path found\n"); 622 return 0; 623 } 624 625 /* 626 * create mixer controls if possible 627 */ 628 #define DIR_OUT 0x1 629 #define DIR_IN 0x2 630 631 static int create_mixer(struct hda_codec *codec, struct hda_gnode *node, 632 unsigned int index, const char *type, const char *dir_sfx) 633 { 634 char name[32]; 635 int err; 636 int created = 0; 637 struct snd_kcontrol_new knew; 638 639 if (type) 640 sprintf(name, "%s %s Switch", type, dir_sfx); 641 else 642 sprintf(name, "%s Switch", dir_sfx); 643 if ((node->wid_caps & AC_WCAP_IN_AMP) && 644 (node->amp_in_caps & AC_AMPCAP_MUTE)) { 645 knew = (struct snd_kcontrol_new)HDA_CODEC_MUTE(name, node->nid, index, HDA_INPUT); 646 snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index); 647 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0) 648 return err; 649 created = 1; 650 } else if ((node->wid_caps & AC_WCAP_OUT_AMP) && 651 (node->amp_out_caps & AC_AMPCAP_MUTE)) { 652 knew = (struct snd_kcontrol_new)HDA_CODEC_MUTE(name, node->nid, 0, HDA_OUTPUT); 653 snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid); 654 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0) 655 return err; 656 created = 1; 657 } 658 659 if (type) 660 sprintf(name, "%s %s Volume", type, dir_sfx); 661 else 662 sprintf(name, "%s Volume", dir_sfx); 663 if ((node->wid_caps & AC_WCAP_IN_AMP) && 664 (node->amp_in_caps & AC_AMPCAP_NUM_STEPS)) { 665 knew = (struct snd_kcontrol_new)HDA_CODEC_VOLUME(name, node->nid, index, HDA_INPUT); 666 snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index); 667 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0) 668 return err; 669 created = 1; 670 } else if ((node->wid_caps & AC_WCAP_OUT_AMP) && 671 (node->amp_out_caps & AC_AMPCAP_NUM_STEPS)) { 672 knew = (struct snd_kcontrol_new)HDA_CODEC_VOLUME(name, node->nid, 0, HDA_OUTPUT); 673 snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid); 674 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0) 675 return err; 676 created = 1; 677 } 678 679 return created; 680 } 681 682 /* 683 * check whether the controls with the given name and direction suffix already exist 684 */ 685 static int check_existing_control(struct hda_codec *codec, const char *type, const char *dir) 686 { 687 struct snd_ctl_elem_id id; 688 memset(&id, 0, sizeof(id)); 689 sprintf(id.name, "%s %s Volume", type, dir); 690 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; 691 if (snd_ctl_find_id(codec->bus->card, &id)) 692 return 1; 693 sprintf(id.name, "%s %s Switch", type, dir); 694 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; 695 if (snd_ctl_find_id(codec->bus->card, &id)) 696 return 1; 697 return 0; 698 } 699 700 /* 701 * build output mixer controls 702 */ 703 static int build_output_controls(struct hda_codec *codec) 704 { 705 struct hda_gspec *spec = codec->spec; 706 int err; 707 708 err = create_mixer(codec, spec->pcm_vol_node, spec->pcm_vol_index, 709 "PCM", "Playback"); 710 if (err < 0) 711 return err; 712 return 0; 713 } 714 715 /* create capture volume/switch */ 716 static int build_input_controls(struct hda_codec *codec) 717 { 718 struct hda_gspec *spec = codec->spec; 719 struct hda_gnode *adc_node = spec->adc_node; 720 int err; 721 722 if (! adc_node) 723 return 0; /* not found */ 724 725 /* create capture volume and switch controls if the ADC has an amp */ 726 err = create_mixer(codec, adc_node, 0, NULL, "Capture"); 727 728 /* create input MUX if multiple sources are available */ 729 if (spec->input_mux.num_items > 1) { 730 static struct snd_kcontrol_new cap_sel = { 731 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 732 .name = "Capture Source", 733 .info = capture_source_info, 734 .get = capture_source_get, 735 .put = capture_source_put, 736 }; 737 if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&cap_sel, codec))) < 0) 738 return err; 739 spec->cur_cap_src = 0; 740 select_input_connection(codec, adc_node, spec->input_mux.items[0].index); 741 } 742 return 0; 743 } 744 745 746 /* 747 * parse the nodes recursively until reach to the output PIN. 748 * 749 * returns 0 - if not found, 750 * 1 - if found, but no mixer is created 751 * 2 - if found and mixer was already created, (just skip) 752 * a negative error code 753 */ 754 static int parse_loopback_path(struct hda_codec *codec, struct hda_gspec *spec, 755 struct hda_gnode *node, struct hda_gnode *dest_node, 756 const char *type) 757 { 758 int i, err; 759 760 if (node->checked) 761 return 0; 762 763 node->checked = 1; 764 if (node == dest_node) { 765 /* loopback connection found */ 766 return 1; 767 } 768 769 for (i = 0; i < node->nconns; i++) { 770 struct hda_gnode *child = hda_get_node(spec, node->conn_list[i]); 771 if (! child) 772 continue; 773 err = parse_loopback_path(codec, spec, child, dest_node, type); 774 if (err < 0) 775 return err; 776 else if (err >= 1) { 777 if (err == 1) { 778 err = create_mixer(codec, node, i, type, "Playback"); 779 if (err < 0) 780 return err; 781 if (err > 0) 782 return 2; /* ok, created */ 783 /* not created, maybe in the lower path */ 784 err = 1; 785 } 786 /* connect and unmute */ 787 if (node->nconns > 1) 788 select_input_connection(codec, node, i); 789 unmute_input(codec, node, i); 790 unmute_output(codec, node); 791 return err; 792 } 793 } 794 return 0; 795 } 796 797 /* 798 * parse the tree and build the loopback controls 799 */ 800 static int build_loopback_controls(struct hda_codec *codec) 801 { 802 struct hda_gspec *spec = codec->spec; 803 struct list_head *p; 804 struct hda_gnode *node; 805 int err; 806 const char *type; 807 808 if (! spec->out_pin_node) 809 return 0; 810 811 list_for_each(p, &spec->nid_list) { 812 node = list_entry(p, struct hda_gnode, list); 813 if (node->type != AC_WID_PIN) 814 continue; 815 /* input capable? */ 816 if (! (node->pin_caps & AC_PINCAP_IN)) 817 return 0; 818 type = get_input_type(node, NULL); 819 if (type) { 820 if (check_existing_control(codec, type, "Playback")) 821 continue; 822 clear_check_flags(spec); 823 err = parse_loopback_path(codec, spec, spec->out_pin_node, 824 node, type); 825 if (err < 0) 826 return err; 827 if (! err) 828 continue; 829 } 830 } 831 return 0; 832 } 833 834 /* 835 * build mixer controls 836 */ 837 static int build_generic_controls(struct hda_codec *codec) 838 { 839 int err; 840 841 if ((err = build_input_controls(codec)) < 0 || 842 (err = build_output_controls(codec)) < 0 || 843 (err = build_loopback_controls(codec)) < 0) 844 return err; 845 846 return 0; 847 } 848 849 /* 850 * PCM 851 */ 852 static struct hda_pcm_stream generic_pcm_playback = { 853 .substreams = 1, 854 .channels_min = 2, 855 .channels_max = 2, 856 }; 857 858 static int build_generic_pcms(struct hda_codec *codec) 859 { 860 struct hda_gspec *spec = codec->spec; 861 struct hda_pcm *info = &spec->pcm_rec; 862 863 if (! spec->dac_node && ! spec->adc_node) { 864 snd_printd("hda_generic: no PCM found\n"); 865 return 0; 866 } 867 868 codec->num_pcms = 1; 869 codec->pcm_info = info; 870 871 info->name = "HDA Generic"; 872 if (spec->dac_node) { 873 info->stream[0] = generic_pcm_playback; 874 info->stream[0].nid = spec->dac_node->nid; 875 } 876 if (spec->adc_node) { 877 info->stream[1] = generic_pcm_playback; 878 info->stream[1].nid = spec->adc_node->nid; 879 } 880 881 return 0; 882 } 883 884 885 /* 886 */ 887 static struct hda_codec_ops generic_patch_ops = { 888 .build_controls = build_generic_controls, 889 .build_pcms = build_generic_pcms, 890 .free = snd_hda_generic_free, 891 }; 892 893 /* 894 * the generic parser 895 */ 896 int snd_hda_parse_generic_codec(struct hda_codec *codec) 897 { 898 struct hda_gspec *spec; 899 int err; 900 901 if(!codec->afg) 902 return 0; 903 904 spec = kzalloc(sizeof(*spec), GFP_KERNEL); 905 if (spec == NULL) { 906 printk(KERN_ERR "hda_generic: can't allocate spec\n"); 907 return -ENOMEM; 908 } 909 codec->spec = spec; 910 INIT_LIST_HEAD(&spec->nid_list); 911 912 if ((err = build_afg_tree(codec)) < 0) 913 goto error; 914 915 if ((err = parse_input(codec)) < 0 || 916 (err = parse_output(codec)) < 0) 917 goto error; 918 919 codec->patch_ops = generic_patch_ops; 920 921 return 0; 922 923 error: 924 snd_hda_generic_free(codec); 925 return err; 926 } 927