Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * (Tentative) USB Audio Driver for ALSA |
| 3 | * |
| 4 | * Mixer control part |
| 5 | * |
| 6 | * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> |
| 7 | * |
| 8 | * Many codes borrowed from audio.c by |
| 9 | * Alan Cox (alan@lxorguk.ukuu.org.uk) |
| 10 | * Thomas Sailer (sailer@ife.ee.ethz.ch) |
| 11 | * |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 26 | * |
| 27 | */ |
| 28 | |
| 29 | #include <sound/driver.h> |
| 30 | #include <linux/bitops.h> |
| 31 | #include <linux/init.h> |
| 32 | #include <linux/list.h> |
| 33 | #include <linux/slab.h> |
| 34 | #include <linux/string.h> |
| 35 | #include <linux/usb.h> |
| 36 | #include <sound/core.h> |
| 37 | #include <sound/control.h> |
| 38 | |
| 39 | #include "usbaudio.h" |
| 40 | |
| 41 | |
| 42 | /* |
| 43 | */ |
| 44 | |
| 45 | /* ignore error from controls - for debugging */ |
| 46 | /* #define IGNORE_CTL_ERROR */ |
| 47 | |
| 48 | typedef struct usb_mixer_build mixer_build_t; |
| 49 | typedef struct usb_audio_term usb_audio_term_t; |
| 50 | typedef struct usb_mixer_elem_info usb_mixer_elem_info_t; |
| 51 | |
| 52 | |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 53 | struct usb_mixer_interface { |
| 54 | snd_usb_audio_t *chip; |
| 55 | unsigned int ctrlif; |
| 56 | struct list_head list; |
| 57 | unsigned int ignore_ctl_error; |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 58 | struct urb *urb; |
| 59 | usb_mixer_elem_info_t **id_elems; /* array[256], indexed by unit id */ |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 60 | }; |
| 61 | |
| 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | struct usb_audio_term { |
| 64 | int id; |
| 65 | int type; |
| 66 | int channels; |
| 67 | unsigned int chconfig; |
| 68 | int name; |
| 69 | }; |
| 70 | |
| 71 | struct usbmix_name_map; |
| 72 | |
| 73 | struct usb_mixer_build { |
| 74 | snd_usb_audio_t *chip; |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 75 | struct usb_mixer_interface *mixer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | unsigned char *buffer; |
| 77 | unsigned int buflen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | unsigned short vendor; |
| 79 | unsigned short product; |
Clemens Ladisch | 707e607 | 2005-04-29 09:56:17 +0200 | [diff] [blame] | 80 | DECLARE_BITMAP(unitbitmap, 256); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | usb_audio_term_t oterm; |
| 82 | const struct usbmix_name_map *map; |
Clemens Ladisch | 8e062ec | 2005-04-22 15:49:52 +0200 | [diff] [blame] | 83 | const struct usbmix_selector_map *selector_map; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | }; |
| 85 | |
| 86 | struct usb_mixer_elem_info { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 87 | struct usb_mixer_interface *mixer; |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 88 | usb_mixer_elem_info_t *next_id_elem; /* list of controls with same id */ |
| 89 | snd_ctl_elem_id_t *elem_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | unsigned int id; |
| 91 | unsigned int control; /* CS or ICN (high byte) */ |
| 92 | unsigned int cmask; /* channel mask bitmap: 0 = master */ |
| 93 | int channels; |
| 94 | int val_type; |
| 95 | int min, max, res; |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 96 | u8 initialized; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | }; |
| 98 | |
| 99 | |
| 100 | enum { |
| 101 | USB_FEATURE_NONE = 0, |
| 102 | USB_FEATURE_MUTE = 1, |
| 103 | USB_FEATURE_VOLUME, |
| 104 | USB_FEATURE_BASS, |
| 105 | USB_FEATURE_MID, |
| 106 | USB_FEATURE_TREBLE, |
| 107 | USB_FEATURE_GEQ, |
| 108 | USB_FEATURE_AGC, |
| 109 | USB_FEATURE_DELAY, |
| 110 | USB_FEATURE_BASSBOOST, |
| 111 | USB_FEATURE_LOUDNESS |
| 112 | }; |
| 113 | |
| 114 | enum { |
| 115 | USB_MIXER_BOOLEAN, |
| 116 | USB_MIXER_INV_BOOLEAN, |
| 117 | USB_MIXER_S8, |
| 118 | USB_MIXER_U8, |
| 119 | USB_MIXER_S16, |
| 120 | USB_MIXER_U16, |
| 121 | }; |
| 122 | |
| 123 | enum { |
| 124 | USB_PROC_UPDOWN = 1, |
| 125 | USB_PROC_UPDOWN_SWITCH = 1, |
| 126 | USB_PROC_UPDOWN_MODE_SEL = 2, |
| 127 | |
| 128 | USB_PROC_PROLOGIC = 2, |
| 129 | USB_PROC_PROLOGIC_SWITCH = 1, |
| 130 | USB_PROC_PROLOGIC_MODE_SEL = 2, |
| 131 | |
| 132 | USB_PROC_3DENH = 3, |
| 133 | USB_PROC_3DENH_SWITCH = 1, |
| 134 | USB_PROC_3DENH_SPACE = 2, |
| 135 | |
| 136 | USB_PROC_REVERB = 4, |
| 137 | USB_PROC_REVERB_SWITCH = 1, |
| 138 | USB_PROC_REVERB_LEVEL = 2, |
| 139 | USB_PROC_REVERB_TIME = 3, |
| 140 | USB_PROC_REVERB_DELAY = 4, |
| 141 | |
| 142 | USB_PROC_CHORUS = 5, |
| 143 | USB_PROC_CHORUS_SWITCH = 1, |
| 144 | USB_PROC_CHORUS_LEVEL = 2, |
| 145 | USB_PROC_CHORUS_RATE = 3, |
| 146 | USB_PROC_CHORUS_DEPTH = 4, |
| 147 | |
| 148 | USB_PROC_DCR = 6, |
| 149 | USB_PROC_DCR_SWITCH = 1, |
| 150 | USB_PROC_DCR_RATIO = 2, |
| 151 | USB_PROC_DCR_MAX_AMP = 3, |
| 152 | USB_PROC_DCR_THRESHOLD = 4, |
| 153 | USB_PROC_DCR_ATTACK = 5, |
| 154 | USB_PROC_DCR_RELEASE = 6, |
| 155 | }; |
| 156 | |
| 157 | #define MAX_CHANNELS 10 /* max logical channels */ |
| 158 | |
| 159 | |
| 160 | /* |
| 161 | * manual mapping of mixer names |
| 162 | * if the mixer topology is too complicated and the parsed names are |
| 163 | * ambiguous, add the entries in usbmixer_maps.c. |
| 164 | */ |
| 165 | #include "usbmixer_maps.c" |
| 166 | |
| 167 | /* get the mapped name if the unit matches */ |
| 168 | static int check_mapped_name(mixer_build_t *state, int unitid, int control, char *buf, int buflen) |
| 169 | { |
| 170 | const struct usbmix_name_map *p; |
| 171 | |
| 172 | if (! state->map) |
| 173 | return 0; |
| 174 | |
| 175 | for (p = state->map; p->id; p++) { |
| 176 | if (p->id == unitid && p->name && |
| 177 | (! control || ! p->control || control == p->control)) { |
| 178 | buflen--; |
| 179 | return strlcpy(buf, p->name, buflen); |
| 180 | } |
| 181 | } |
| 182 | return 0; |
| 183 | } |
| 184 | |
| 185 | /* check whether the control should be ignored */ |
| 186 | static int check_ignored_ctl(mixer_build_t *state, int unitid, int control) |
| 187 | { |
| 188 | const struct usbmix_name_map *p; |
| 189 | |
| 190 | if (! state->map) |
| 191 | return 0; |
| 192 | for (p = state->map; p->id; p++) { |
| 193 | if (p->id == unitid && ! p->name && |
| 194 | (! control || ! p->control || control == p->control)) { |
| 195 | // printk("ignored control %d:%d\n", unitid, control); |
| 196 | return 1; |
| 197 | } |
| 198 | } |
| 199 | return 0; |
| 200 | } |
| 201 | |
Clemens Ladisch | 8e062ec | 2005-04-22 15:49:52 +0200 | [diff] [blame] | 202 | /* get the mapped selector source name */ |
| 203 | static int check_mapped_selector_name(mixer_build_t *state, int unitid, |
| 204 | int index, char *buf, int buflen) |
| 205 | { |
| 206 | const struct usbmix_selector_map *p; |
| 207 | |
| 208 | if (! state->selector_map) |
| 209 | return 0; |
| 210 | for (p = state->selector_map; p->id; p++) { |
| 211 | if (p->id == unitid && index < p->count) |
| 212 | return strlcpy(buf, p->names[index], buflen); |
| 213 | } |
| 214 | return 0; |
| 215 | } |
| 216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | /* |
| 218 | * find an audio control unit with the given unit id |
| 219 | */ |
| 220 | static void *find_audio_control_unit(mixer_build_t *state, unsigned char unit) |
| 221 | { |
| 222 | unsigned char *p; |
| 223 | |
| 224 | p = NULL; |
| 225 | while ((p = snd_usb_find_desc(state->buffer, state->buflen, p, |
| 226 | USB_DT_CS_INTERFACE)) != NULL) { |
| 227 | if (p[0] >= 4 && p[2] >= INPUT_TERMINAL && p[2] <= EXTENSION_UNIT && p[3] == unit) |
| 228 | return p; |
| 229 | } |
| 230 | return NULL; |
| 231 | } |
| 232 | |
| 233 | |
| 234 | /* |
| 235 | * copy a string with the given id |
| 236 | */ |
| 237 | static int snd_usb_copy_string_desc(mixer_build_t *state, int index, char *buf, int maxlen) |
| 238 | { |
| 239 | int len = usb_string(state->chip->dev, index, buf, maxlen - 1); |
| 240 | buf[len] = 0; |
| 241 | return len; |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * convert from the byte/word on usb descriptor to the zero-based integer |
| 246 | */ |
| 247 | static int convert_signed_value(usb_mixer_elem_info_t *cval, int val) |
| 248 | { |
| 249 | switch (cval->val_type) { |
| 250 | case USB_MIXER_BOOLEAN: |
| 251 | return !!val; |
| 252 | case USB_MIXER_INV_BOOLEAN: |
| 253 | return !val; |
| 254 | case USB_MIXER_U8: |
| 255 | val &= 0xff; |
| 256 | break; |
| 257 | case USB_MIXER_S8: |
| 258 | val &= 0xff; |
| 259 | if (val >= 0x80) |
| 260 | val -= 0x100; |
| 261 | break; |
| 262 | case USB_MIXER_U16: |
| 263 | val &= 0xffff; |
| 264 | break; |
| 265 | case USB_MIXER_S16: |
| 266 | val &= 0xffff; |
| 267 | if (val >= 0x8000) |
| 268 | val -= 0x10000; |
| 269 | break; |
| 270 | } |
| 271 | return val; |
| 272 | } |
| 273 | |
| 274 | /* |
| 275 | * convert from the zero-based int to the byte/word for usb descriptor |
| 276 | */ |
| 277 | static int convert_bytes_value(usb_mixer_elem_info_t *cval, int val) |
| 278 | { |
| 279 | switch (cval->val_type) { |
| 280 | case USB_MIXER_BOOLEAN: |
| 281 | return !!val; |
| 282 | case USB_MIXER_INV_BOOLEAN: |
| 283 | return !val; |
| 284 | case USB_MIXER_S8: |
| 285 | case USB_MIXER_U8: |
| 286 | return val & 0xff; |
| 287 | case USB_MIXER_S16: |
| 288 | case USB_MIXER_U16: |
| 289 | return val & 0xffff; |
| 290 | } |
| 291 | return 0; /* not reached */ |
| 292 | } |
| 293 | |
| 294 | static int get_relative_value(usb_mixer_elem_info_t *cval, int val) |
| 295 | { |
| 296 | if (! cval->res) |
| 297 | cval->res = 1; |
| 298 | if (val < cval->min) |
| 299 | return 0; |
| 300 | else if (val > cval->max) |
| 301 | return (cval->max - cval->min) / cval->res; |
| 302 | else |
| 303 | return (val - cval->min) / cval->res; |
| 304 | } |
| 305 | |
| 306 | static int get_abs_value(usb_mixer_elem_info_t *cval, int val) |
| 307 | { |
| 308 | if (val < 0) |
| 309 | return cval->min; |
| 310 | if (! cval->res) |
| 311 | cval->res = 1; |
| 312 | val *= cval->res; |
| 313 | val += cval->min; |
| 314 | if (val > cval->max) |
| 315 | return cval->max; |
| 316 | return val; |
| 317 | } |
| 318 | |
| 319 | |
| 320 | /* |
| 321 | * retrieve a mixer value |
| 322 | */ |
| 323 | |
| 324 | static int get_ctl_value(usb_mixer_elem_info_t *cval, int request, int validx, int *value_ret) |
| 325 | { |
| 326 | unsigned char buf[2]; |
| 327 | int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; |
| 328 | int timeout = 10; |
| 329 | |
| 330 | while (timeout-- > 0) { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 331 | if (snd_usb_ctl_msg(cval->mixer->chip->dev, |
| 332 | usb_rcvctrlpipe(cval->mixer->chip->dev, 0), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | request, |
| 334 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 335 | validx, cval->mixer->ctrlif | (cval->id << 8), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | buf, val_len, 100) >= 0) { |
| 337 | *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); |
| 338 | return 0; |
| 339 | } |
| 340 | } |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 341 | snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", |
| 342 | request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | return -EINVAL; |
| 344 | } |
| 345 | |
| 346 | static int get_cur_ctl_value(usb_mixer_elem_info_t *cval, int validx, int *value) |
| 347 | { |
| 348 | return get_ctl_value(cval, GET_CUR, validx, value); |
| 349 | } |
| 350 | |
| 351 | /* channel = 0: master, 1 = first channel */ |
| 352 | inline static int get_cur_mix_value(usb_mixer_elem_info_t *cval, int channel, int *value) |
| 353 | { |
| 354 | return get_ctl_value(cval, GET_CUR, (cval->control << 8) | channel, value); |
| 355 | } |
| 356 | |
| 357 | /* |
| 358 | * set a mixer value |
| 359 | */ |
| 360 | |
| 361 | static int set_ctl_value(usb_mixer_elem_info_t *cval, int request, int validx, int value_set) |
| 362 | { |
| 363 | unsigned char buf[2]; |
| 364 | int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; |
| 365 | int timeout = 10; |
| 366 | |
| 367 | value_set = convert_bytes_value(cval, value_set); |
| 368 | buf[0] = value_set & 0xff; |
| 369 | buf[1] = (value_set >> 8) & 0xff; |
| 370 | while (timeout -- > 0) |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 371 | if (snd_usb_ctl_msg(cval->mixer->chip->dev, |
| 372 | usb_sndctrlpipe(cval->mixer->chip->dev, 0), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | request, |
| 374 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 375 | validx, cval->mixer->ctrlif | (cval->id << 8), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | buf, val_len, 100) >= 0) |
| 377 | return 0; |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 378 | snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n", |
| 379 | request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type, buf[0], buf[1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | return -EINVAL; |
| 381 | } |
| 382 | |
| 383 | static int set_cur_ctl_value(usb_mixer_elem_info_t *cval, int validx, int value) |
| 384 | { |
| 385 | return set_ctl_value(cval, SET_CUR, validx, value); |
| 386 | } |
| 387 | |
| 388 | inline static int set_cur_mix_value(usb_mixer_elem_info_t *cval, int channel, int value) |
| 389 | { |
| 390 | return set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel, value); |
| 391 | } |
| 392 | |
| 393 | |
| 394 | /* |
| 395 | * parser routines begin here... |
| 396 | */ |
| 397 | |
| 398 | static int parse_audio_unit(mixer_build_t *state, int unitid); |
| 399 | |
| 400 | |
| 401 | /* |
| 402 | * check if the input/output channel routing is enabled on the given bitmap. |
| 403 | * used for mixer unit parser |
| 404 | */ |
| 405 | static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs) |
| 406 | { |
| 407 | int idx = ich * num_outs + och; |
| 408 | return bmap[idx >> 3] & (0x80 >> (idx & 7)); |
| 409 | } |
| 410 | |
| 411 | |
| 412 | /* |
| 413 | * add an alsa control element |
| 414 | * search and increment the index until an empty slot is found. |
| 415 | * |
| 416 | * if failed, give up and free the control instance. |
| 417 | */ |
| 418 | |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 419 | static int add_control_to_empty(mixer_build_t *state, snd_kcontrol_t *kctl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | { |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 421 | usb_mixer_elem_info_t *cval = kctl->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | int err; |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 423 | |
| 424 | while (snd_ctl_find_id(state->chip->card, &kctl->id)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | kctl->id.index++; |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 426 | if ((err = snd_ctl_add(state->chip->card, kctl)) < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | snd_printd(KERN_ERR "cannot add control (err = %d)\n", err); |
| 428 | snd_ctl_free_one(kctl); |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 429 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | } |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 431 | cval->elem_id = &kctl->id; |
| 432 | cval->next_id_elem = state->mixer->id_elems[cval->id]; |
| 433 | state->mixer->id_elems[cval->id] = cval; |
| 434 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | } |
| 436 | |
| 437 | |
| 438 | /* |
| 439 | * get a terminal name string |
| 440 | */ |
| 441 | |
| 442 | static struct iterm_name_combo { |
| 443 | int type; |
| 444 | char *name; |
| 445 | } iterm_names[] = { |
| 446 | { 0x0300, "Output" }, |
| 447 | { 0x0301, "Speaker" }, |
| 448 | { 0x0302, "Headphone" }, |
| 449 | { 0x0303, "HMD Audio" }, |
| 450 | { 0x0304, "Desktop Speaker" }, |
| 451 | { 0x0305, "Room Speaker" }, |
| 452 | { 0x0306, "Com Speaker" }, |
| 453 | { 0x0307, "LFE" }, |
| 454 | { 0x0600, "External In" }, |
| 455 | { 0x0601, "Analog In" }, |
| 456 | { 0x0602, "Digital In" }, |
| 457 | { 0x0603, "Line" }, |
| 458 | { 0x0604, "Legacy In" }, |
| 459 | { 0x0605, "IEC958 In" }, |
| 460 | { 0x0606, "1394 DA Stream" }, |
| 461 | { 0x0607, "1394 DV Stream" }, |
| 462 | { 0x0700, "Embedded" }, |
| 463 | { 0x0701, "Noise Source" }, |
| 464 | { 0x0702, "Equalization Noise" }, |
| 465 | { 0x0703, "CD" }, |
| 466 | { 0x0704, "DAT" }, |
| 467 | { 0x0705, "DCC" }, |
| 468 | { 0x0706, "MiniDisk" }, |
| 469 | { 0x0707, "Analog Tape" }, |
| 470 | { 0x0708, "Phonograph" }, |
| 471 | { 0x0709, "VCR Audio" }, |
| 472 | { 0x070a, "Video Disk Audio" }, |
| 473 | { 0x070b, "DVD Audio" }, |
| 474 | { 0x070c, "TV Tuner Audio" }, |
| 475 | { 0x070d, "Satellite Rec Audio" }, |
| 476 | { 0x070e, "Cable Tuner Audio" }, |
| 477 | { 0x070f, "DSS Audio" }, |
| 478 | { 0x0710, "Radio Receiver" }, |
| 479 | { 0x0711, "Radio Transmitter" }, |
| 480 | { 0x0712, "Multi-Track Recorder" }, |
| 481 | { 0x0713, "Synthesizer" }, |
| 482 | { 0 }, |
| 483 | }; |
| 484 | |
| 485 | static int get_term_name(mixer_build_t *state, usb_audio_term_t *iterm, |
| 486 | unsigned char *name, int maxlen, int term_only) |
| 487 | { |
| 488 | struct iterm_name_combo *names; |
| 489 | |
| 490 | if (iterm->name) |
| 491 | return snd_usb_copy_string_desc(state, iterm->name, name, maxlen); |
| 492 | |
| 493 | /* virtual type - not a real terminal */ |
| 494 | if (iterm->type >> 16) { |
| 495 | if (term_only) |
| 496 | return 0; |
| 497 | switch (iterm->type >> 16) { |
| 498 | case SELECTOR_UNIT: |
| 499 | strcpy(name, "Selector"); return 8; |
| 500 | case PROCESSING_UNIT: |
| 501 | strcpy(name, "Process Unit"); return 12; |
| 502 | case EXTENSION_UNIT: |
| 503 | strcpy(name, "Ext Unit"); return 8; |
| 504 | case MIXER_UNIT: |
| 505 | strcpy(name, "Mixer"); return 5; |
| 506 | default: |
| 507 | return sprintf(name, "Unit %d", iterm->id); |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | switch (iterm->type & 0xff00) { |
| 512 | case 0x0100: |
| 513 | strcpy(name, "PCM"); return 3; |
| 514 | case 0x0200: |
| 515 | strcpy(name, "Mic"); return 3; |
| 516 | case 0x0400: |
| 517 | strcpy(name, "Headset"); return 7; |
| 518 | case 0x0500: |
| 519 | strcpy(name, "Phone"); return 5; |
| 520 | } |
| 521 | |
| 522 | for (names = iterm_names; names->type; names++) |
| 523 | if (names->type == iterm->type) { |
| 524 | strcpy(name, names->name); |
| 525 | return strlen(names->name); |
| 526 | } |
| 527 | return 0; |
| 528 | } |
| 529 | |
| 530 | |
| 531 | /* |
| 532 | * parse the source unit recursively until it reaches to a terminal |
| 533 | * or a branched unit. |
| 534 | */ |
| 535 | static int check_input_term(mixer_build_t *state, int id, usb_audio_term_t *term) |
| 536 | { |
| 537 | unsigned char *p1; |
| 538 | |
| 539 | memset(term, 0, sizeof(*term)); |
| 540 | while ((p1 = find_audio_control_unit(state, id)) != NULL) { |
| 541 | term->id = id; |
| 542 | switch (p1[2]) { |
| 543 | case INPUT_TERMINAL: |
| 544 | term->type = combine_word(p1 + 4); |
| 545 | term->channels = p1[7]; |
| 546 | term->chconfig = combine_word(p1 + 8); |
| 547 | term->name = p1[11]; |
| 548 | return 0; |
| 549 | case FEATURE_UNIT: |
| 550 | id = p1[4]; |
| 551 | break; /* continue to parse */ |
| 552 | case MIXER_UNIT: |
| 553 | term->type = p1[2] << 16; /* virtual type */ |
| 554 | term->channels = p1[5 + p1[4]]; |
| 555 | term->chconfig = combine_word(p1 + 6 + p1[4]); |
| 556 | term->name = p1[p1[0] - 1]; |
| 557 | return 0; |
| 558 | case SELECTOR_UNIT: |
| 559 | /* call recursively to retrieve the channel info */ |
| 560 | if (check_input_term(state, p1[5], term) < 0) |
| 561 | return -ENODEV; |
| 562 | term->type = p1[2] << 16; /* virtual type */ |
| 563 | term->id = id; |
| 564 | term->name = p1[9 + p1[0] - 1]; |
| 565 | return 0; |
| 566 | case PROCESSING_UNIT: |
| 567 | case EXTENSION_UNIT: |
| 568 | if (p1[6] == 1) { |
| 569 | id = p1[7]; |
| 570 | break; /* continue to parse */ |
| 571 | } |
| 572 | term->type = p1[2] << 16; /* virtual type */ |
| 573 | term->channels = p1[7 + p1[6]]; |
| 574 | term->chconfig = combine_word(p1 + 8 + p1[6]); |
| 575 | term->name = p1[12 + p1[6] + p1[11 + p1[6]]]; |
| 576 | return 0; |
| 577 | default: |
| 578 | return -ENODEV; |
| 579 | } |
| 580 | } |
| 581 | return -ENODEV; |
| 582 | } |
| 583 | |
| 584 | |
| 585 | /* |
| 586 | * Feature Unit |
| 587 | */ |
| 588 | |
| 589 | /* feature unit control information */ |
| 590 | struct usb_feature_control_info { |
| 591 | const char *name; |
| 592 | unsigned int type; /* control type (mute, volume, etc.) */ |
| 593 | }; |
| 594 | |
| 595 | static struct usb_feature_control_info audio_feature_info[] = { |
| 596 | { "Mute", USB_MIXER_INV_BOOLEAN }, |
| 597 | { "Volume", USB_MIXER_S16 }, |
| 598 | { "Tone Control - Bass", USB_MIXER_S8 }, |
| 599 | { "Tone Control - Mid", USB_MIXER_S8 }, |
| 600 | { "Tone Control - Treble", USB_MIXER_S8 }, |
| 601 | { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */ |
| 602 | { "Auto Gain Control", USB_MIXER_BOOLEAN }, |
| 603 | { "Delay Control", USB_MIXER_U16 }, |
| 604 | { "Bass Boost", USB_MIXER_BOOLEAN }, |
| 605 | { "Loudness", USB_MIXER_BOOLEAN }, |
| 606 | }; |
| 607 | |
| 608 | |
| 609 | /* private_free callback */ |
| 610 | static void usb_mixer_elem_free(snd_kcontrol_t *kctl) |
| 611 | { |
| 612 | if (kctl->private_data) { |
| 613 | kfree(kctl->private_data); |
| 614 | kctl->private_data = NULL; |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | |
| 619 | /* |
| 620 | * interface to ALSA control for feature/mixer units |
| 621 | */ |
| 622 | |
| 623 | /* |
| 624 | * retrieve the minimum and maximum values for the specified control |
| 625 | */ |
| 626 | static int get_min_max(usb_mixer_elem_info_t *cval, int default_min) |
| 627 | { |
| 628 | /* for failsafe */ |
| 629 | cval->min = default_min; |
| 630 | cval->max = cval->min + 1; |
| 631 | cval->res = 1; |
| 632 | |
| 633 | if (cval->val_type == USB_MIXER_BOOLEAN || |
| 634 | cval->val_type == USB_MIXER_INV_BOOLEAN) { |
| 635 | cval->initialized = 1; |
| 636 | } else { |
| 637 | int minchn = 0; |
| 638 | if (cval->cmask) { |
| 639 | int i; |
| 640 | for (i = 0; i < MAX_CHANNELS; i++) |
| 641 | if (cval->cmask & (1 << i)) { |
| 642 | minchn = i + 1; |
| 643 | break; |
| 644 | } |
| 645 | } |
| 646 | if (get_ctl_value(cval, GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || |
| 647 | get_ctl_value(cval, GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 648 | snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n", |
| 649 | cval->id, cval->mixer->ctrlif, cval->control, cval->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | return -EINVAL; |
| 651 | } |
| 652 | if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) { |
| 653 | cval->res = 1; |
| 654 | } else { |
| 655 | int last_valid_res = cval->res; |
| 656 | |
| 657 | while (cval->res > 1) { |
| 658 | if (set_ctl_value(cval, SET_RES, (cval->control << 8) | minchn, cval->res / 2) < 0) |
| 659 | break; |
| 660 | cval->res /= 2; |
| 661 | } |
| 662 | if (get_ctl_value(cval, GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) |
| 663 | cval->res = last_valid_res; |
| 664 | } |
| 665 | if (cval->res == 0) |
| 666 | cval->res = 1; |
| 667 | cval->initialized = 1; |
| 668 | } |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | |
| 673 | /* get a feature/mixer unit info */ |
| 674 | static int mixer_ctl_feature_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo) |
| 675 | { |
| 676 | usb_mixer_elem_info_t *cval = kcontrol->private_data; |
| 677 | |
| 678 | if (cval->val_type == USB_MIXER_BOOLEAN || |
| 679 | cval->val_type == USB_MIXER_INV_BOOLEAN) |
| 680 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
| 681 | else |
| 682 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 683 | uinfo->count = cval->channels; |
| 684 | if (cval->val_type == USB_MIXER_BOOLEAN || |
| 685 | cval->val_type == USB_MIXER_INV_BOOLEAN) { |
| 686 | uinfo->value.integer.min = 0; |
| 687 | uinfo->value.integer.max = 1; |
| 688 | } else { |
| 689 | if (! cval->initialized) |
| 690 | get_min_max(cval, 0); |
| 691 | uinfo->value.integer.min = 0; |
| 692 | uinfo->value.integer.max = (cval->max - cval->min) / cval->res; |
| 693 | } |
| 694 | return 0; |
| 695 | } |
| 696 | |
| 697 | /* get the current value from feature/mixer unit */ |
| 698 | static int mixer_ctl_feature_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) |
| 699 | { |
| 700 | usb_mixer_elem_info_t *cval = kcontrol->private_data; |
| 701 | int c, cnt, val, err; |
| 702 | |
| 703 | if (cval->cmask) { |
| 704 | cnt = 0; |
| 705 | for (c = 0; c < MAX_CHANNELS; c++) { |
| 706 | if (cval->cmask & (1 << c)) { |
| 707 | err = get_cur_mix_value(cval, c + 1, &val); |
| 708 | if (err < 0) { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 709 | if (cval->mixer->ignore_ctl_error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | ucontrol->value.integer.value[0] = cval->min; |
| 711 | return 0; |
| 712 | } |
| 713 | snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", cval->control, c + 1, err); |
| 714 | return err; |
| 715 | } |
| 716 | val = get_relative_value(cval, val); |
| 717 | ucontrol->value.integer.value[cnt] = val; |
| 718 | cnt++; |
| 719 | } |
| 720 | } |
| 721 | } else { |
| 722 | /* master channel */ |
| 723 | err = get_cur_mix_value(cval, 0, &val); |
| 724 | if (err < 0) { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 725 | if (cval->mixer->ignore_ctl_error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | ucontrol->value.integer.value[0] = cval->min; |
| 727 | return 0; |
| 728 | } |
| 729 | snd_printd(KERN_ERR "cannot get current value for control %d master ch: err = %d\n", cval->control, err); |
| 730 | return err; |
| 731 | } |
| 732 | val = get_relative_value(cval, val); |
| 733 | ucontrol->value.integer.value[0] = val; |
| 734 | } |
| 735 | return 0; |
| 736 | } |
| 737 | |
| 738 | /* put the current value to feature/mixer unit */ |
| 739 | static int mixer_ctl_feature_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) |
| 740 | { |
| 741 | usb_mixer_elem_info_t *cval = kcontrol->private_data; |
| 742 | int c, cnt, val, oval, err; |
| 743 | int changed = 0; |
| 744 | |
| 745 | if (cval->cmask) { |
| 746 | cnt = 0; |
| 747 | for (c = 0; c < MAX_CHANNELS; c++) { |
| 748 | if (cval->cmask & (1 << c)) { |
| 749 | err = get_cur_mix_value(cval, c + 1, &oval); |
| 750 | if (err < 0) { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 751 | if (cval->mixer->ignore_ctl_error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | return 0; |
| 753 | return err; |
| 754 | } |
| 755 | val = ucontrol->value.integer.value[cnt]; |
| 756 | val = get_abs_value(cval, val); |
| 757 | if (oval != val) { |
| 758 | set_cur_mix_value(cval, c + 1, val); |
| 759 | changed = 1; |
| 760 | } |
| 761 | get_cur_mix_value(cval, c + 1, &val); |
| 762 | cnt++; |
| 763 | } |
| 764 | } |
| 765 | } else { |
| 766 | /* master channel */ |
| 767 | err = get_cur_mix_value(cval, 0, &oval); |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 768 | if (err < 0 && cval->mixer->ignore_ctl_error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | return 0; |
| 770 | if (err < 0) |
| 771 | return err; |
| 772 | val = ucontrol->value.integer.value[0]; |
| 773 | val = get_abs_value(cval, val); |
| 774 | if (val != oval) { |
| 775 | set_cur_mix_value(cval, 0, val); |
| 776 | changed = 1; |
| 777 | } |
| 778 | } |
| 779 | return changed; |
| 780 | } |
| 781 | |
| 782 | static snd_kcontrol_new_t usb_feature_unit_ctl = { |
| 783 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 784 | .name = "", /* will be filled later manually */ |
| 785 | .info = mixer_ctl_feature_info, |
| 786 | .get = mixer_ctl_feature_get, |
| 787 | .put = mixer_ctl_feature_put, |
| 788 | }; |
| 789 | |
| 790 | |
| 791 | /* |
| 792 | * build a feature control |
| 793 | */ |
| 794 | |
| 795 | static void build_feature_ctl(mixer_build_t *state, unsigned char *desc, |
| 796 | unsigned int ctl_mask, int control, |
| 797 | usb_audio_term_t *iterm, int unitid) |
| 798 | { |
| 799 | unsigned int len = 0; |
| 800 | int mapped_name = 0; |
| 801 | int nameid = desc[desc[0] - 1]; |
| 802 | snd_kcontrol_t *kctl; |
| 803 | usb_mixer_elem_info_t *cval; |
| 804 | |
| 805 | control++; /* change from zero-based to 1-based value */ |
| 806 | |
| 807 | if (control == USB_FEATURE_GEQ) { |
| 808 | /* FIXME: not supported yet */ |
| 809 | return; |
| 810 | } |
| 811 | |
| 812 | if (check_ignored_ctl(state, unitid, control)) |
| 813 | return; |
| 814 | |
| 815 | cval = kcalloc(1, sizeof(*cval), GFP_KERNEL); |
| 816 | if (! cval) { |
| 817 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
| 818 | return; |
| 819 | } |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 820 | cval->mixer = state->mixer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | cval->id = unitid; |
| 822 | cval->control = control; |
| 823 | cval->cmask = ctl_mask; |
| 824 | cval->val_type = audio_feature_info[control-1].type; |
| 825 | if (ctl_mask == 0) |
| 826 | cval->channels = 1; /* master channel */ |
| 827 | else { |
| 828 | int i, c = 0; |
| 829 | for (i = 0; i < 16; i++) |
| 830 | if (ctl_mask & (1 << i)) |
| 831 | c++; |
| 832 | cval->channels = c; |
| 833 | } |
| 834 | |
| 835 | /* get min/max values */ |
| 836 | get_min_max(cval, 0); |
| 837 | |
| 838 | kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); |
| 839 | if (! kctl) { |
| 840 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
| 841 | kfree(cval); |
| 842 | return; |
| 843 | } |
| 844 | kctl->private_free = usb_mixer_elem_free; |
| 845 | |
| 846 | len = check_mapped_name(state, unitid, control, kctl->id.name, sizeof(kctl->id.name)); |
| 847 | mapped_name = len != 0; |
| 848 | if (! len && nameid) |
| 849 | len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); |
| 850 | |
| 851 | switch (control) { |
| 852 | case USB_FEATURE_MUTE: |
| 853 | case USB_FEATURE_VOLUME: |
| 854 | /* determine the control name. the rule is: |
| 855 | * - if a name id is given in descriptor, use it. |
| 856 | * - if the connected input can be determined, then use the name |
| 857 | * of terminal type. |
| 858 | * - if the connected output can be determined, use it. |
| 859 | * - otherwise, anonymous name. |
| 860 | */ |
| 861 | if (! len) { |
| 862 | len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1); |
| 863 | if (! len) |
| 864 | len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1); |
| 865 | if (! len) |
| 866 | len = snprintf(kctl->id.name, sizeof(kctl->id.name), |
| 867 | "Feature %d", unitid); |
| 868 | } |
| 869 | /* determine the stream direction: |
| 870 | * if the connected output is USB stream, then it's likely a |
| 871 | * capture stream. otherwise it should be playback (hopefully :) |
| 872 | */ |
| 873 | if (! mapped_name && ! (state->oterm.type >> 16)) { |
| 874 | if ((state->oterm.type & 0xff00) == 0x0100) { |
| 875 | len = strlcat(kctl->id.name, " Capture", sizeof(kctl->id.name)); |
| 876 | } else { |
| 877 | len = strlcat(kctl->id.name + len, " Playback", sizeof(kctl->id.name)); |
| 878 | } |
| 879 | } |
| 880 | strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume", |
| 881 | sizeof(kctl->id.name)); |
| 882 | break; |
| 883 | |
| 884 | default: |
| 885 | if (! len) |
| 886 | strlcpy(kctl->id.name, audio_feature_info[control-1].name, |
| 887 | sizeof(kctl->id.name)); |
| 888 | break; |
| 889 | } |
| 890 | |
| 891 | /* quirk for UDA1321/N101 */ |
| 892 | /* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */ |
| 893 | /* is not very clear from datasheets */ |
| 894 | /* I hope that the min value is -15360 for newer firmware --jk */ |
| 895 | if (((state->vendor == 0x471 && (state->product == 0x104 || state->product == 0x105 || state->product == 0x101)) || |
| 896 | (state->vendor == 0x672 && state->product == 0x1041)) && !strcmp(kctl->id.name, "PCM Playback Volume") && |
| 897 | cval->min == -15616) { |
| 898 | snd_printk("USB Audio: using volume control quirk for the UDA1321/N101 chip\n"); |
| 899 | cval->max = -256; |
| 900 | } |
| 901 | |
| 902 | snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", |
| 903 | cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res); |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 904 | add_control_to_empty(state, kctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | } |
| 906 | |
| 907 | |
| 908 | |
| 909 | /* |
| 910 | * parse a feature unit |
| 911 | * |
| 912 | * most of controlls are defined here. |
| 913 | */ |
| 914 | static int parse_audio_feature_unit(mixer_build_t *state, int unitid, unsigned char *ftr) |
| 915 | { |
| 916 | int channels, i, j; |
| 917 | usb_audio_term_t iterm; |
| 918 | unsigned int master_bits, first_ch_bits; |
| 919 | int err, csize; |
| 920 | |
| 921 | if (ftr[0] < 7 || ! (csize = ftr[5]) || ftr[0] < 7 + csize) { |
| 922 | snd_printk(KERN_ERR "usbaudio: unit %u: invalid FEATURE_UNIT descriptor\n", unitid); |
| 923 | return -EINVAL; |
| 924 | } |
| 925 | |
| 926 | /* parse the source unit */ |
| 927 | if ((err = parse_audio_unit(state, ftr[4])) < 0) |
| 928 | return err; |
| 929 | |
| 930 | /* determine the input source type and name */ |
| 931 | if (check_input_term(state, ftr[4], &iterm) < 0) |
| 932 | return -EINVAL; |
| 933 | |
| 934 | channels = (ftr[0] - 7) / csize - 1; |
| 935 | |
| 936 | master_bits = snd_usb_combine_bytes(ftr + 6, csize); |
| 937 | if (channels > 0) |
| 938 | first_ch_bits = snd_usb_combine_bytes(ftr + 6 + csize, csize); |
| 939 | else |
| 940 | first_ch_bits = 0; |
| 941 | /* check all control types */ |
| 942 | for (i = 0; i < 10; i++) { |
| 943 | unsigned int ch_bits = 0; |
| 944 | for (j = 0; j < channels; j++) { |
| 945 | unsigned int mask = snd_usb_combine_bytes(ftr + 6 + csize * (j+1), csize); |
| 946 | if (mask & (1 << i)) |
| 947 | ch_bits |= (1 << j); |
| 948 | } |
| 949 | if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ |
| 950 | build_feature_ctl(state, ftr, ch_bits, i, &iterm, unitid); |
| 951 | if (master_bits & (1 << i)) |
| 952 | build_feature_ctl(state, ftr, 0, i, &iterm, unitid); |
| 953 | } |
| 954 | |
| 955 | return 0; |
| 956 | } |
| 957 | |
| 958 | |
| 959 | /* |
| 960 | * Mixer Unit |
| 961 | */ |
| 962 | |
| 963 | /* |
| 964 | * build a mixer unit control |
| 965 | * |
| 966 | * the callbacks are identical with feature unit. |
| 967 | * input channel number (zero based) is given in control field instead. |
| 968 | */ |
| 969 | |
| 970 | static void build_mixer_unit_ctl(mixer_build_t *state, unsigned char *desc, |
| 971 | int in_pin, int in_ch, int unitid, |
| 972 | usb_audio_term_t *iterm) |
| 973 | { |
| 974 | usb_mixer_elem_info_t *cval; |
| 975 | unsigned int input_pins = desc[4]; |
| 976 | unsigned int num_outs = desc[5 + input_pins]; |
| 977 | unsigned int i, len; |
| 978 | snd_kcontrol_t *kctl; |
| 979 | |
| 980 | if (check_ignored_ctl(state, unitid, 0)) |
| 981 | return; |
| 982 | |
| 983 | cval = kcalloc(1, sizeof(*cval), GFP_KERNEL); |
| 984 | if (! cval) |
| 985 | return; |
| 986 | |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 987 | cval->mixer = state->mixer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | cval->id = unitid; |
| 989 | cval->control = in_ch + 1; /* based on 1 */ |
| 990 | cval->val_type = USB_MIXER_S16; |
| 991 | for (i = 0; i < num_outs; i++) { |
| 992 | if (check_matrix_bitmap(desc + 9 + input_pins, in_ch, i, num_outs)) { |
| 993 | cval->cmask |= (1 << i); |
| 994 | cval->channels++; |
| 995 | } |
| 996 | } |
| 997 | |
| 998 | /* get min/max values */ |
| 999 | get_min_max(cval, 0); |
| 1000 | |
| 1001 | kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); |
| 1002 | if (! kctl) { |
| 1003 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
| 1004 | kfree(cval); |
| 1005 | return; |
| 1006 | } |
| 1007 | kctl->private_free = usb_mixer_elem_free; |
| 1008 | |
| 1009 | len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name)); |
| 1010 | if (! len) |
| 1011 | len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0); |
| 1012 | if (! len) |
| 1013 | len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); |
| 1014 | strlcat(kctl->id.name + len, " Volume", sizeof(kctl->id.name)); |
| 1015 | |
| 1016 | snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n", |
| 1017 | cval->id, kctl->id.name, cval->channels, cval->min, cval->max); |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1018 | add_control_to_empty(state, kctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | } |
| 1020 | |
| 1021 | |
| 1022 | /* |
| 1023 | * parse a mixer unit |
| 1024 | */ |
| 1025 | static int parse_audio_mixer_unit(mixer_build_t *state, int unitid, unsigned char *desc) |
| 1026 | { |
| 1027 | usb_audio_term_t iterm; |
| 1028 | int input_pins, num_ins, num_outs; |
| 1029 | int pin, ich, err; |
| 1030 | |
| 1031 | if (desc[0] < 11 || ! (input_pins = desc[4]) || ! (num_outs = desc[5 + input_pins])) { |
| 1032 | snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid); |
| 1033 | return -EINVAL; |
| 1034 | } |
| 1035 | /* no bmControls field (e.g. Maya44) -> ignore */ |
| 1036 | if (desc[0] <= 10 + input_pins) { |
| 1037 | snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid); |
| 1038 | return 0; |
| 1039 | } |
| 1040 | |
| 1041 | num_ins = 0; |
| 1042 | ich = 0; |
| 1043 | for (pin = 0; pin < input_pins; pin++) { |
| 1044 | err = parse_audio_unit(state, desc[5 + pin]); |
| 1045 | if (err < 0) |
| 1046 | return err; |
| 1047 | err = check_input_term(state, desc[5 + pin], &iterm); |
| 1048 | if (err < 0) |
| 1049 | return err; |
| 1050 | num_ins += iterm.channels; |
| 1051 | for (; ich < num_ins; ++ich) { |
| 1052 | int och, ich_has_controls = 0; |
| 1053 | |
| 1054 | for (och = 0; och < num_outs; ++och) { |
| 1055 | if (check_matrix_bitmap(desc + 9 + input_pins, |
| 1056 | ich, och, num_outs)) { |
| 1057 | ich_has_controls = 1; |
| 1058 | break; |
| 1059 | } |
| 1060 | } |
| 1061 | if (ich_has_controls) |
| 1062 | build_mixer_unit_ctl(state, desc, pin, ich, |
| 1063 | unitid, &iterm); |
| 1064 | } |
| 1065 | } |
| 1066 | return 0; |
| 1067 | } |
| 1068 | |
| 1069 | |
| 1070 | /* |
| 1071 | * Processing Unit / Extension Unit |
| 1072 | */ |
| 1073 | |
| 1074 | /* get callback for processing/extension unit */ |
| 1075 | static int mixer_ctl_procunit_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) |
| 1076 | { |
| 1077 | usb_mixer_elem_info_t *cval = kcontrol->private_data; |
| 1078 | int err, val; |
| 1079 | |
| 1080 | err = get_cur_ctl_value(cval, cval->control << 8, &val); |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1081 | if (err < 0 && cval->mixer->ignore_ctl_error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | ucontrol->value.integer.value[0] = cval->min; |
| 1083 | return 0; |
| 1084 | } |
| 1085 | if (err < 0) |
| 1086 | return err; |
| 1087 | val = get_relative_value(cval, val); |
| 1088 | ucontrol->value.integer.value[0] = val; |
| 1089 | return 0; |
| 1090 | } |
| 1091 | |
| 1092 | /* put callback for processing/extension unit */ |
| 1093 | static int mixer_ctl_procunit_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) |
| 1094 | { |
| 1095 | usb_mixer_elem_info_t *cval = kcontrol->private_data; |
| 1096 | int val, oval, err; |
| 1097 | |
| 1098 | err = get_cur_ctl_value(cval, cval->control << 8, &oval); |
| 1099 | if (err < 0) { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1100 | if (cval->mixer->ignore_ctl_error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | return 0; |
| 1102 | return err; |
| 1103 | } |
| 1104 | val = ucontrol->value.integer.value[0]; |
| 1105 | val = get_abs_value(cval, val); |
| 1106 | if (val != oval) { |
| 1107 | set_cur_ctl_value(cval, cval->control << 8, val); |
| 1108 | return 1; |
| 1109 | } |
| 1110 | return 0; |
| 1111 | } |
| 1112 | |
| 1113 | /* alsa control interface for processing/extension unit */ |
| 1114 | static snd_kcontrol_new_t mixer_procunit_ctl = { |
| 1115 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 1116 | .name = "", /* will be filled later */ |
| 1117 | .info = mixer_ctl_feature_info, |
| 1118 | .get = mixer_ctl_procunit_get, |
| 1119 | .put = mixer_ctl_procunit_put, |
| 1120 | }; |
| 1121 | |
| 1122 | |
| 1123 | /* |
| 1124 | * predefined data for processing units |
| 1125 | */ |
| 1126 | struct procunit_value_info { |
| 1127 | int control; |
| 1128 | char *suffix; |
| 1129 | int val_type; |
| 1130 | int min_value; |
| 1131 | }; |
| 1132 | |
| 1133 | struct procunit_info { |
| 1134 | int type; |
| 1135 | char *name; |
| 1136 | struct procunit_value_info *values; |
| 1137 | }; |
| 1138 | |
| 1139 | static struct procunit_value_info updown_proc_info[] = { |
| 1140 | { USB_PROC_UPDOWN_SWITCH, "Switch", USB_MIXER_BOOLEAN }, |
| 1141 | { USB_PROC_UPDOWN_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 }, |
| 1142 | { 0 } |
| 1143 | }; |
| 1144 | static struct procunit_value_info prologic_proc_info[] = { |
| 1145 | { USB_PROC_PROLOGIC_SWITCH, "Switch", USB_MIXER_BOOLEAN }, |
| 1146 | { USB_PROC_PROLOGIC_MODE_SEL, "Mode Select", USB_MIXER_U8, 1 }, |
| 1147 | { 0 } |
| 1148 | }; |
| 1149 | static struct procunit_value_info threed_enh_proc_info[] = { |
| 1150 | { USB_PROC_3DENH_SWITCH, "Switch", USB_MIXER_BOOLEAN }, |
| 1151 | { USB_PROC_3DENH_SPACE, "Spaciousness", USB_MIXER_U8 }, |
| 1152 | { 0 } |
| 1153 | }; |
| 1154 | static struct procunit_value_info reverb_proc_info[] = { |
| 1155 | { USB_PROC_REVERB_SWITCH, "Switch", USB_MIXER_BOOLEAN }, |
| 1156 | { USB_PROC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, |
| 1157 | { USB_PROC_REVERB_TIME, "Time", USB_MIXER_U16 }, |
| 1158 | { USB_PROC_REVERB_DELAY, "Delay", USB_MIXER_U8 }, |
| 1159 | { 0 } |
| 1160 | }; |
| 1161 | static struct procunit_value_info chorus_proc_info[] = { |
| 1162 | { USB_PROC_CHORUS_SWITCH, "Switch", USB_MIXER_BOOLEAN }, |
| 1163 | { USB_PROC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, |
| 1164 | { USB_PROC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, |
| 1165 | { USB_PROC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, |
| 1166 | { 0 } |
| 1167 | }; |
| 1168 | static struct procunit_value_info dcr_proc_info[] = { |
| 1169 | { USB_PROC_DCR_SWITCH, "Switch", USB_MIXER_BOOLEAN }, |
| 1170 | { USB_PROC_DCR_RATIO, "Ratio", USB_MIXER_U16 }, |
| 1171 | { USB_PROC_DCR_MAX_AMP, "Max Amp", USB_MIXER_S16 }, |
| 1172 | { USB_PROC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, |
| 1173 | { USB_PROC_DCR_ATTACK, "Attack Time", USB_MIXER_U16 }, |
| 1174 | { USB_PROC_DCR_RELEASE, "Release Time", USB_MIXER_U16 }, |
| 1175 | { 0 } |
| 1176 | }; |
| 1177 | |
| 1178 | static struct procunit_info procunits[] = { |
| 1179 | { USB_PROC_UPDOWN, "Up Down", updown_proc_info }, |
| 1180 | { USB_PROC_PROLOGIC, "Dolby Prologic", prologic_proc_info }, |
| 1181 | { USB_PROC_3DENH, "3D Stereo Extender", threed_enh_proc_info }, |
| 1182 | { USB_PROC_REVERB, "Reverb", reverb_proc_info }, |
| 1183 | { USB_PROC_CHORUS, "Chorus", chorus_proc_info }, |
| 1184 | { USB_PROC_DCR, "DCR", dcr_proc_info }, |
| 1185 | { 0 }, |
| 1186 | }; |
| 1187 | |
| 1188 | /* |
| 1189 | * build a processing/extension unit |
| 1190 | */ |
| 1191 | static int build_audio_procunit(mixer_build_t *state, int unitid, unsigned char *dsc, struct procunit_info *list, char *name) |
| 1192 | { |
| 1193 | int num_ins = dsc[6]; |
| 1194 | usb_mixer_elem_info_t *cval; |
| 1195 | snd_kcontrol_t *kctl; |
| 1196 | int i, err, nameid, type, len; |
| 1197 | struct procunit_info *info; |
| 1198 | struct procunit_value_info *valinfo; |
| 1199 | static struct procunit_value_info default_value_info[] = { |
| 1200 | { 0x01, "Switch", USB_MIXER_BOOLEAN }, |
| 1201 | { 0 } |
| 1202 | }; |
| 1203 | static struct procunit_info default_info = { |
| 1204 | 0, NULL, default_value_info |
| 1205 | }; |
| 1206 | |
| 1207 | if (dsc[0] < 13 || dsc[0] < 13 + num_ins || dsc[0] < num_ins + dsc[11 + num_ins]) { |
| 1208 | snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid); |
| 1209 | return -EINVAL; |
| 1210 | } |
| 1211 | |
| 1212 | for (i = 0; i < num_ins; i++) { |
| 1213 | if ((err = parse_audio_unit(state, dsc[7 + i])) < 0) |
| 1214 | return err; |
| 1215 | } |
| 1216 | |
| 1217 | type = combine_word(&dsc[4]); |
| 1218 | if (! type) |
| 1219 | return 0; /* undefined? */ |
| 1220 | |
| 1221 | for (info = list; info && info->type; info++) |
| 1222 | if (info->type == type) |
| 1223 | break; |
| 1224 | if (! info || ! info->type) |
| 1225 | info = &default_info; |
| 1226 | |
| 1227 | for (valinfo = info->values; valinfo->control; valinfo++) { |
| 1228 | /* FIXME: bitmap might be longer than 8bit */ |
| 1229 | if (! (dsc[12 + num_ins] & (1 << (valinfo->control - 1)))) |
| 1230 | continue; |
| 1231 | if (check_ignored_ctl(state, unitid, valinfo->control)) |
| 1232 | continue; |
| 1233 | cval = kcalloc(1, sizeof(*cval), GFP_KERNEL); |
| 1234 | if (! cval) { |
| 1235 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
| 1236 | return -ENOMEM; |
| 1237 | } |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1238 | cval->mixer = state->mixer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | cval->id = unitid; |
| 1240 | cval->control = valinfo->control; |
| 1241 | cval->val_type = valinfo->val_type; |
| 1242 | cval->channels = 1; |
| 1243 | |
| 1244 | /* get min/max values */ |
| 1245 | if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) { |
| 1246 | /* FIXME: hard-coded */ |
| 1247 | cval->min = 1; |
| 1248 | cval->max = dsc[15]; |
| 1249 | cval->res = 1; |
| 1250 | cval->initialized = 1; |
| 1251 | } else |
| 1252 | get_min_max(cval, valinfo->min_value); |
| 1253 | |
| 1254 | kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); |
| 1255 | if (! kctl) { |
| 1256 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
| 1257 | kfree(cval); |
| 1258 | return -ENOMEM; |
| 1259 | } |
| 1260 | kctl->private_free = usb_mixer_elem_free; |
| 1261 | |
| 1262 | if (check_mapped_name(state, unitid, cval->control, kctl->id.name, sizeof(kctl->id.name))) |
| 1263 | ; |
| 1264 | else if (info->name) |
| 1265 | strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name)); |
| 1266 | else { |
| 1267 | nameid = dsc[12 + num_ins + dsc[11 + num_ins]]; |
| 1268 | len = 0; |
| 1269 | if (nameid) |
| 1270 | len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); |
| 1271 | if (! len) |
| 1272 | strlcpy(kctl->id.name, name, sizeof(kctl->id.name)); |
| 1273 | } |
| 1274 | strlcat(kctl->id.name, " ", sizeof(kctl->id.name)); |
| 1275 | strlcat(kctl->id.name, valinfo->suffix, sizeof(kctl->id.name)); |
| 1276 | |
| 1277 | snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n", |
| 1278 | cval->id, kctl->id.name, cval->channels, cval->min, cval->max); |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1279 | if ((err = add_control_to_empty(state, kctl)) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | return err; |
| 1281 | } |
| 1282 | return 0; |
| 1283 | } |
| 1284 | |
| 1285 | |
| 1286 | static int parse_audio_processing_unit(mixer_build_t *state, int unitid, unsigned char *desc) |
| 1287 | { |
| 1288 | return build_audio_procunit(state, unitid, desc, procunits, "Processing Unit"); |
| 1289 | } |
| 1290 | |
| 1291 | static int parse_audio_extension_unit(mixer_build_t *state, int unitid, unsigned char *desc) |
| 1292 | { |
| 1293 | return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit"); |
| 1294 | } |
| 1295 | |
| 1296 | |
| 1297 | /* |
| 1298 | * Selector Unit |
| 1299 | */ |
| 1300 | |
| 1301 | /* info callback for selector unit |
| 1302 | * use an enumerator type for routing |
| 1303 | */ |
| 1304 | static int mixer_ctl_selector_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo) |
| 1305 | { |
| 1306 | usb_mixer_elem_info_t *cval = kcontrol->private_data; |
| 1307 | char **itemlist = (char **)kcontrol->private_value; |
| 1308 | |
| 1309 | snd_assert(itemlist, return -EINVAL); |
| 1310 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; |
| 1311 | uinfo->count = 1; |
| 1312 | uinfo->value.enumerated.items = cval->max; |
| 1313 | if ((int)uinfo->value.enumerated.item >= cval->max) |
| 1314 | uinfo->value.enumerated.item = cval->max - 1; |
| 1315 | strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]); |
| 1316 | return 0; |
| 1317 | } |
| 1318 | |
| 1319 | /* get callback for selector unit */ |
| 1320 | static int mixer_ctl_selector_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) |
| 1321 | { |
| 1322 | usb_mixer_elem_info_t *cval = kcontrol->private_data; |
| 1323 | int val, err; |
| 1324 | |
| 1325 | err = get_cur_ctl_value(cval, 0, &val); |
| 1326 | if (err < 0) { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1327 | if (cval->mixer->ignore_ctl_error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | ucontrol->value.enumerated.item[0] = 0; |
| 1329 | return 0; |
| 1330 | } |
| 1331 | return err; |
| 1332 | } |
| 1333 | val = get_relative_value(cval, val); |
| 1334 | ucontrol->value.enumerated.item[0] = val; |
| 1335 | return 0; |
| 1336 | } |
| 1337 | |
| 1338 | /* put callback for selector unit */ |
| 1339 | static int mixer_ctl_selector_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) |
| 1340 | { |
| 1341 | usb_mixer_elem_info_t *cval = kcontrol->private_data; |
| 1342 | int val, oval, err; |
| 1343 | |
| 1344 | err = get_cur_ctl_value(cval, 0, &oval); |
| 1345 | if (err < 0) { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1346 | if (cval->mixer->ignore_ctl_error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | return 0; |
| 1348 | return err; |
| 1349 | } |
| 1350 | val = ucontrol->value.enumerated.item[0]; |
| 1351 | val = get_abs_value(cval, val); |
| 1352 | if (val != oval) { |
| 1353 | set_cur_ctl_value(cval, 0, val); |
| 1354 | return 1; |
| 1355 | } |
| 1356 | return 0; |
| 1357 | } |
| 1358 | |
| 1359 | /* alsa control interface for selector unit */ |
| 1360 | static snd_kcontrol_new_t mixer_selectunit_ctl = { |
| 1361 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 1362 | .name = "", /* will be filled later */ |
| 1363 | .info = mixer_ctl_selector_info, |
| 1364 | .get = mixer_ctl_selector_get, |
| 1365 | .put = mixer_ctl_selector_put, |
| 1366 | }; |
| 1367 | |
| 1368 | |
| 1369 | /* private free callback. |
| 1370 | * free both private_data and private_value |
| 1371 | */ |
| 1372 | static void usb_mixer_selector_elem_free(snd_kcontrol_t *kctl) |
| 1373 | { |
| 1374 | int i, num_ins = 0; |
| 1375 | |
| 1376 | if (kctl->private_data) { |
| 1377 | usb_mixer_elem_info_t *cval = kctl->private_data; |
| 1378 | num_ins = cval->max; |
| 1379 | kfree(cval); |
| 1380 | kctl->private_data = NULL; |
| 1381 | } |
| 1382 | if (kctl->private_value) { |
| 1383 | char **itemlist = (char **)kctl->private_value; |
| 1384 | for (i = 0; i < num_ins; i++) |
| 1385 | kfree(itemlist[i]); |
| 1386 | kfree(itemlist); |
| 1387 | kctl->private_value = 0; |
| 1388 | } |
| 1389 | } |
| 1390 | |
| 1391 | /* |
| 1392 | * parse a selector unit |
| 1393 | */ |
| 1394 | static int parse_audio_selector_unit(mixer_build_t *state, int unitid, unsigned char *desc) |
| 1395 | { |
| 1396 | unsigned int num_ins = desc[4]; |
| 1397 | unsigned int i, nameid, len; |
| 1398 | int err; |
| 1399 | usb_mixer_elem_info_t *cval; |
| 1400 | snd_kcontrol_t *kctl; |
| 1401 | char **namelist; |
| 1402 | |
| 1403 | if (! num_ins || desc[0] < 6 + num_ins) { |
| 1404 | snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid); |
| 1405 | return -EINVAL; |
| 1406 | } |
| 1407 | |
| 1408 | for (i = 0; i < num_ins; i++) { |
| 1409 | if ((err = parse_audio_unit(state, desc[5 + i])) < 0) |
| 1410 | return err; |
| 1411 | } |
| 1412 | |
| 1413 | if (num_ins == 1) /* only one ? nonsense! */ |
| 1414 | return 0; |
| 1415 | |
| 1416 | if (check_ignored_ctl(state, unitid, 0)) |
| 1417 | return 0; |
| 1418 | |
| 1419 | cval = kcalloc(1, sizeof(*cval), GFP_KERNEL); |
| 1420 | if (! cval) { |
| 1421 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
| 1422 | return -ENOMEM; |
| 1423 | } |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1424 | cval->mixer = state->mixer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | cval->id = unitid; |
| 1426 | cval->val_type = USB_MIXER_U8; |
| 1427 | cval->channels = 1; |
| 1428 | cval->min = 1; |
| 1429 | cval->max = num_ins; |
| 1430 | cval->res = 1; |
| 1431 | cval->initialized = 1; |
| 1432 | |
| 1433 | namelist = kmalloc(sizeof(char *) * num_ins, GFP_KERNEL); |
| 1434 | if (! namelist) { |
| 1435 | snd_printk(KERN_ERR "cannot malloc\n"); |
| 1436 | kfree(cval); |
| 1437 | return -ENOMEM; |
| 1438 | } |
| 1439 | #define MAX_ITEM_NAME_LEN 64 |
| 1440 | for (i = 0; i < num_ins; i++) { |
| 1441 | usb_audio_term_t iterm; |
| 1442 | len = 0; |
| 1443 | namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); |
| 1444 | if (! namelist[i]) { |
| 1445 | snd_printk(KERN_ERR "cannot malloc\n"); |
| 1446 | while (--i > 0) |
| 1447 | kfree(namelist[i]); |
| 1448 | kfree(namelist); |
| 1449 | kfree(cval); |
| 1450 | return -ENOMEM; |
| 1451 | } |
Clemens Ladisch | 8e062ec | 2005-04-22 15:49:52 +0200 | [diff] [blame] | 1452 | len = check_mapped_selector_name(state, unitid, i, namelist[i], |
| 1453 | MAX_ITEM_NAME_LEN); |
| 1454 | if (! len && check_input_term(state, desc[5 + i], &iterm) >= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0); |
| 1456 | if (! len) |
| 1457 | sprintf(namelist[i], "Input %d", i); |
| 1458 | } |
| 1459 | |
| 1460 | kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); |
| 1461 | if (! kctl) { |
| 1462 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
| 1463 | kfree(cval); |
| 1464 | return -ENOMEM; |
| 1465 | } |
| 1466 | kctl->private_value = (unsigned long)namelist; |
| 1467 | kctl->private_free = usb_mixer_selector_elem_free; |
| 1468 | |
| 1469 | nameid = desc[desc[0] - 1]; |
| 1470 | len = check_mapped_name(state, unitid, 0, kctl->id.name, sizeof(kctl->id.name)); |
| 1471 | if (len) |
| 1472 | ; |
| 1473 | else if (nameid) |
| 1474 | snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); |
| 1475 | else { |
| 1476 | len = get_term_name(state, &state->oterm, |
| 1477 | kctl->id.name, sizeof(kctl->id.name), 0); |
| 1478 | if (! len) |
| 1479 | strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); |
| 1480 | |
| 1481 | if ((state->oterm.type & 0xff00) == 0x0100) |
| 1482 | strlcat(kctl->id.name, " Capture Source", sizeof(kctl->id.name)); |
| 1483 | else |
| 1484 | strlcat(kctl->id.name, " Playback Source", sizeof(kctl->id.name)); |
| 1485 | } |
| 1486 | |
| 1487 | snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n", |
| 1488 | cval->id, kctl->id.name, num_ins); |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1489 | if ((err = add_control_to_empty(state, kctl)) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | return err; |
| 1491 | |
| 1492 | return 0; |
| 1493 | } |
| 1494 | |
| 1495 | |
| 1496 | /* |
| 1497 | * parse an audio unit recursively |
| 1498 | */ |
| 1499 | |
| 1500 | static int parse_audio_unit(mixer_build_t *state, int unitid) |
| 1501 | { |
| 1502 | unsigned char *p1; |
| 1503 | |
| 1504 | if (test_and_set_bit(unitid, state->unitbitmap)) |
| 1505 | return 0; /* the unit already visited */ |
| 1506 | |
| 1507 | p1 = find_audio_control_unit(state, unitid); |
| 1508 | if (!p1) { |
| 1509 | snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid); |
| 1510 | return -EINVAL; |
| 1511 | } |
| 1512 | |
| 1513 | switch (p1[2]) { |
| 1514 | case INPUT_TERMINAL: |
| 1515 | return 0; /* NOP */ |
| 1516 | case MIXER_UNIT: |
| 1517 | return parse_audio_mixer_unit(state, unitid, p1); |
| 1518 | case SELECTOR_UNIT: |
| 1519 | return parse_audio_selector_unit(state, unitid, p1); |
| 1520 | case FEATURE_UNIT: |
| 1521 | return parse_audio_feature_unit(state, unitid, p1); |
| 1522 | case PROCESSING_UNIT: |
| 1523 | return parse_audio_processing_unit(state, unitid, p1); |
| 1524 | case EXTENSION_UNIT: |
| 1525 | return parse_audio_extension_unit(state, unitid, p1); |
| 1526 | default: |
| 1527 | snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]); |
| 1528 | return -EINVAL; |
| 1529 | } |
| 1530 | } |
| 1531 | |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1532 | static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) |
| 1533 | { |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 1534 | kfree(mixer->id_elems); |
| 1535 | if (mixer->urb) { |
| 1536 | kfree(mixer->urb->transfer_buffer); |
| 1537 | usb_free_urb(mixer->urb); |
| 1538 | } |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1539 | kfree(mixer); |
| 1540 | } |
| 1541 | |
| 1542 | static int snd_usb_mixer_dev_free(snd_device_t *device) |
| 1543 | { |
| 1544 | struct usb_mixer_interface *mixer = device->device_data; |
| 1545 | snd_usb_mixer_free(mixer); |
| 1546 | return 0; |
| 1547 | } |
| 1548 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | /* |
| 1550 | * create mixer controls |
| 1551 | * |
| 1552 | * walk through all OUTPUT_TERMINAL descriptors to search for mixers |
| 1553 | */ |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1554 | static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | { |
| 1556 | unsigned char *desc; |
| 1557 | mixer_build_t state; |
| 1558 | int err; |
| 1559 | const struct usbmix_ctl_map *map; |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1560 | struct usb_device_descriptor *dev = &mixer->chip->dev->descriptor; |
| 1561 | struct usb_host_interface *hostif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1563 | hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | memset(&state, 0, sizeof(state)); |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1565 | state.chip = mixer->chip; |
| 1566 | state.mixer = mixer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | state.buffer = hostif->extra; |
| 1568 | state.buflen = hostif->extralen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | state.vendor = le16_to_cpu(dev->idVendor); |
| 1570 | state.product = le16_to_cpu(dev->idProduct); |
| 1571 | |
| 1572 | /* check the mapping table */ |
| 1573 | for (map = usbmix_ctl_maps; map->vendor; map++) { |
| 1574 | if (map->vendor == state.vendor && map->product == state.product) { |
| 1575 | state.map = map->map; |
Clemens Ladisch | 8e062ec | 2005-04-22 15:49:52 +0200 | [diff] [blame] | 1576 | state.selector_map = map->selector_map; |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1577 | mixer->ignore_ctl_error = map->ignore_ctl_error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | break; |
| 1579 | } |
| 1580 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | |
| 1582 | desc = NULL; |
| 1583 | while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, OUTPUT_TERMINAL)) != NULL) { |
| 1584 | if (desc[0] < 9) |
| 1585 | continue; /* invalid descriptor? */ |
| 1586 | set_bit(desc[3], state.unitbitmap); /* mark terminal ID as visited */ |
| 1587 | state.oterm.id = desc[3]; |
| 1588 | state.oterm.type = combine_word(&desc[4]); |
| 1589 | state.oterm.name = desc[8]; |
| 1590 | err = parse_audio_unit(&state, desc[7]); |
| 1591 | if (err < 0) |
| 1592 | return err; |
| 1593 | } |
| 1594 | return 0; |
| 1595 | } |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1596 | |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 1597 | static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, |
| 1598 | int unitid) |
| 1599 | { |
| 1600 | usb_mixer_elem_info_t *info; |
| 1601 | |
| 1602 | for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) |
| 1603 | snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, |
| 1604 | info->elem_id); |
| 1605 | } |
| 1606 | |
| 1607 | static void snd_usb_mixer_status_complete(struct urb *urb, struct pt_regs *regs) |
| 1608 | { |
| 1609 | struct usb_mixer_interface *mixer = urb->context; |
| 1610 | |
| 1611 | if (urb->status == 0) { |
| 1612 | u8 *buf = urb->transfer_buffer; |
| 1613 | int i; |
| 1614 | |
| 1615 | for (i = urb->actual_length; i >= 2; buf += 2, i -= 2) { |
| 1616 | snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n", |
| 1617 | buf[0], buf[1]); |
| 1618 | /* ignore any notifications not from the control interface */ |
| 1619 | if ((buf[0] & 0x0f) != 0) |
| 1620 | continue; |
| 1621 | if (!(buf[0] & 0x40)) |
| 1622 | snd_usb_mixer_notify_id(mixer, buf[1]); |
| 1623 | } |
| 1624 | } |
| 1625 | if (urb->status != -ENOENT && urb->status != -ECONNRESET) { |
| 1626 | urb->dev = mixer->chip->dev; |
| 1627 | usb_submit_urb(urb, GFP_ATOMIC); |
| 1628 | } |
| 1629 | } |
| 1630 | |
| 1631 | /* create the handler for the optional status interrupt endpoint */ |
| 1632 | static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) |
| 1633 | { |
| 1634 | struct usb_host_interface *hostif; |
| 1635 | struct usb_endpoint_descriptor *ep; |
| 1636 | void *transfer_buffer; |
| 1637 | int buffer_length; |
| 1638 | unsigned int epnum; |
| 1639 | |
| 1640 | hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0]; |
| 1641 | /* we need one interrupt input endpoint */ |
| 1642 | if (get_iface_desc(hostif)->bNumEndpoints < 1) |
| 1643 | return 0; |
| 1644 | ep = get_endpoint(hostif, 0); |
| 1645 | if ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) != USB_DIR_IN || |
| 1646 | (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) |
| 1647 | return 0; |
| 1648 | |
| 1649 | epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
| 1650 | buffer_length = le16_to_cpu(ep->wMaxPacketSize); |
| 1651 | transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); |
| 1652 | if (!transfer_buffer) |
| 1653 | return -ENOMEM; |
| 1654 | mixer->urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1655 | if (!mixer->urb) { |
| 1656 | kfree(transfer_buffer); |
| 1657 | return -ENOMEM; |
| 1658 | } |
| 1659 | usb_fill_int_urb(mixer->urb, mixer->chip->dev, |
| 1660 | usb_rcvintpipe(mixer->chip->dev, epnum), |
| 1661 | transfer_buffer, buffer_length, |
| 1662 | snd_usb_mixer_status_complete, mixer, ep->bInterval); |
| 1663 | usb_submit_urb(mixer->urb, GFP_KERNEL); |
| 1664 | return 0; |
| 1665 | } |
| 1666 | |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1667 | int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif) |
| 1668 | { |
| 1669 | static snd_device_ops_t dev_ops = { |
| 1670 | .dev_free = snd_usb_mixer_dev_free |
| 1671 | }; |
| 1672 | struct usb_mixer_interface *mixer; |
| 1673 | int err; |
| 1674 | |
| 1675 | strcpy(chip->card->mixername, "USB Mixer"); |
| 1676 | |
| 1677 | mixer = kcalloc(1, sizeof(*mixer), GFP_KERNEL); |
| 1678 | if (!mixer) |
| 1679 | return -ENOMEM; |
| 1680 | mixer->chip = chip; |
| 1681 | mixer->ctrlif = ctrlif; |
| 1682 | #ifdef IGNORE_CTL_ERROR |
| 1683 | mixer->ignore_ctl_error = 1; |
| 1684 | #endif |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 1685 | mixer->id_elems = kcalloc(256, sizeof(*mixer->id_elems), GFP_KERNEL); |
| 1686 | if (!mixer->id_elems) { |
| 1687 | kfree(mixer); |
| 1688 | return -ENOMEM; |
| 1689 | } |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1690 | |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 1691 | if ((err = snd_usb_mixer_controls(mixer)) < 0 || |
| 1692 | (err = snd_usb_mixer_status_create(mixer)) < 0) { |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1693 | snd_usb_mixer_free(mixer); |
| 1694 | return err; |
| 1695 | } |
| 1696 | |
| 1697 | err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops); |
| 1698 | if (err < 0) { |
| 1699 | snd_usb_mixer_free(mixer); |
| 1700 | return err; |
| 1701 | } |
| 1702 | list_add(&mixer->list, &chip->mixer_list); |
| 1703 | return 0; |
| 1704 | } |
| 1705 | |
| 1706 | void snd_usb_mixer_disconnect(struct list_head *p) |
| 1707 | { |
Clemens Ladisch | 6639b6c | 2005-04-29 16:26:14 +0200 | [diff] [blame^] | 1708 | struct usb_mixer_interface *mixer; |
| 1709 | |
| 1710 | mixer = list_entry(p, struct usb_mixer_interface, list); |
| 1711 | if (mixer->urb) |
| 1712 | usb_kill_urb(mixer->urb); |
Clemens Ladisch | 84957a8 | 2005-04-29 16:23:13 +0200 | [diff] [blame] | 1713 | } |