git.oblomov.eu Git - linux-2.6/blob - sound/ppc/awacs.c

   1 /*
   2  * PMac AWACS lowlevel functions
   3  *
   4  * Copyright (c) by Takashi Iwai <tiwai@suse.de>
   5  * code based on dmasound.c.
   6  *
   7  *   This program is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License as published by
   9  *   the Free Software Foundation; either version 2 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20  */
  21
  22
  23 #include <asm/io.h>
  24 #include <asm/nvram.h>
  25 #include <linux/init.h>
  26 #include <linux/delay.h>
  27 #include <linux/slab.h>
  28 #include <sound/core.h>
  29 #include "pmac.h"
  30
  31
  32 #ifdef CONFIG_ADB_CUDA
  33 #define PMAC_AMP_AVAIL
  34 #endif
  35
  36 #ifdef PMAC_AMP_AVAIL
  37 struct awacs_amp {
  38         unsigned char amp_master;
  39         unsigned char amp_vol[2][2];
  40         unsigned char amp_tone[2];
  41 };
  42
  43 #define CHECK_CUDA_AMP() (sys_ctrler == SYS_CTRLER_CUDA)
  44
  45 #endif /* PMAC_AMP_AVAIL */
  46
  47
  48 static void snd_pmac_screamer_wait(struct snd_pmac *chip)
  49 {
  50         long timeout = 2000;
  51         while (!(in_le32(&chip->awacs->codec_stat) & MASK_VALID)) {
  52                 mdelay(1);
  53                 if (! --timeout) {
  54                         snd_printd("snd_pmac_screamer_wait timeout\n");
  55                         break;
  56                 }
  57         }
  58 }
  59
  60 /*
  61  * write AWACS register
  62  */
  63 static void
  64 snd_pmac_awacs_write(struct snd_pmac *chip, int val)
  65 {
  66         long timeout = 5000000;
  67
  68         if (chip->model == PMAC_SCREAMER)
  69                 snd_pmac_screamer_wait(chip);
  70         out_le32(&chip->awacs->codec_ctrl, val | (chip->subframe << 22));
  71         while (in_le32(&chip->awacs->codec_ctrl) & MASK_NEWECMD) {
  72                 if (! --timeout) {
  73                         snd_printd("snd_pmac_awacs_write timeout\n");
  74                         break;
  75                 }
  76         }
  77 }
  78
  79 static void
  80 snd_pmac_awacs_write_reg(struct snd_pmac *chip, int reg, int val)
  81 {
  82         snd_pmac_awacs_write(chip, val | (reg << 12));
  83         chip->awacs_reg[reg] = val;
  84 }
  85
  86 static void
  87 snd_pmac_awacs_write_noreg(struct snd_pmac *chip, int reg, int val)
  88 {
  89         snd_pmac_awacs_write(chip, val | (reg << 12));
  90 }
  91
  92 #ifdef CONFIG_PM
  93 /* Recalibrate chip */
  94 static void screamer_recalibrate(struct snd_pmac *chip)
  95 {
  96         if (chip->model != PMAC_SCREAMER)
  97                 return;
  98
  99         /* Sorry for the horrible delays... I hope to get that improved
 100          * by making the whole PM process asynchronous in a future version
 101          */
 102         snd_pmac_awacs_write_noreg(chip, 1, chip->awacs_reg[1]);
 103         if (chip->manufacturer == 0x1)
 104                 /* delay for broken crystal part */
 105                 msleep(750);
 106         snd_pmac_awacs_write_noreg(chip, 1,
 107                                    chip->awacs_reg[1] | MASK_RECALIBRATE |
 108                                    MASK_CMUTE | MASK_AMUTE);
 109         snd_pmac_awacs_write_noreg(chip, 1, chip->awacs_reg[1]);
 110         snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
 111 }
 112
 113 #else
 114 #define screamer_recalibrate(chip) /* NOP */
 115 #endif
 116
 117
 118 /*
 119  * additional callback to set the pcm format
 120  */
 121 static void snd_pmac_awacs_set_format(struct snd_pmac *chip)
 122 {
 123         chip->awacs_reg[1] &= ~MASK_SAMPLERATE;
 124         chip->awacs_reg[1] |= chip->rate_index << 3;
 125         snd_pmac_awacs_write_reg(chip, 1, chip->awacs_reg[1]);
 126 }
 127
 128
 129 /*
 130  * AWACS volume callbacks
 131  */
 132 /*
 133  * volumes: 0-15 stereo
 134  */
 135 static int snd_pmac_awacs_info_volume(struct snd_kcontrol *kcontrol,
 136                                       struct snd_ctl_elem_info *uinfo)
 137 {
 138         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 139         uinfo->count = 2;
 140         uinfo->value.integer.min = 0;
 141         uinfo->value.integer.max = 15;
 142         return 0;
 143 }
 144
 145 static int snd_pmac_awacs_get_volume(struct snd_kcontrol *kcontrol,
 146                                      struct snd_ctl_elem_value *ucontrol)
 147 {
 148         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 149         int reg = kcontrol->private_value & 0xff;
 150         int lshift = (kcontrol->private_value >> 8) & 0xff;
 151         int inverted = (kcontrol->private_value >> 16) & 1;
 152         unsigned long flags;
 153         int vol[2];
 154
 155         spin_lock_irqsave(&chip->reg_lock, flags);
 156         vol[0] = (chip->awacs_reg[reg] >> lshift) & 0xf;
 157         vol[1] = chip->awacs_reg[reg] & 0xf;
 158         spin_unlock_irqrestore(&chip->reg_lock, flags);
 159         if (inverted) {
 160                 vol[0] = 0x0f - vol[0];
 161                 vol[1] = 0x0f - vol[1];
 162         }
 163         ucontrol->value.integer.value[0] = vol[0];
 164         ucontrol->value.integer.value[1] = vol[1];
 165         return 0;
 166 }
 167
 168 static int snd_pmac_awacs_put_volume(struct snd_kcontrol *kcontrol,
 169                                      struct snd_ctl_elem_value *ucontrol)
 170 {
 171         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 172         int reg = kcontrol->private_value & 0xff;
 173         int lshift = (kcontrol->private_value >> 8) & 0xff;
 174         int inverted = (kcontrol->private_value >> 16) & 1;
 175         int val, oldval;
 176         unsigned long flags;
 177         unsigned int vol[2];
 178
 179         vol[0] = ucontrol->value.integer.value[0];
 180         vol[1] = ucontrol->value.integer.value[1];
 181         if (vol[0] > 0x0f || vol[1] > 0x0f)
 182                 return -EINVAL;
 183         if (inverted) {
 184                 vol[0] = 0x0f - vol[0];
 185                 vol[1] = 0x0f - vol[1];
 186         }
 187         vol[0] &= 0x0f;
 188         vol[1] &= 0x0f;
 189         spin_lock_irqsave(&chip->reg_lock, flags);
 190         oldval = chip->awacs_reg[reg];
 191         val = oldval & ~(0xf | (0xf << lshift));
 192         val |= vol[0] << lshift;
 193         val |= vol[1];
 194         if (oldval != val)
 195                 snd_pmac_awacs_write_reg(chip, reg, val);
 196         spin_unlock_irqrestore(&chip->reg_lock, flags);
 197         return oldval != reg;
 198 }
 199
 200
 201 #define AWACS_VOLUME(xname, xreg, xshift, xinverted) \
 202 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0, \
 203   .info = snd_pmac_awacs_info_volume, \
 204   .get = snd_pmac_awacs_get_volume, \
 205   .put = snd_pmac_awacs_put_volume, \
 206   .private_value = (xreg) | ((xshift) << 8) | ((xinverted) << 16) }
 207
 208 /*
 209  * mute master/ogain for AWACS: mono
 210  */
 211 static int snd_pmac_awacs_get_switch(struct snd_kcontrol *kcontrol,
 212                                      struct snd_ctl_elem_value *ucontrol)
 213 {
 214         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 215         int reg = kcontrol->private_value & 0xff;
 216         int shift = (kcontrol->private_value >> 8) & 0xff;
 217         int invert = (kcontrol->private_value >> 16) & 1;
 218         int val;
 219         unsigned long flags;
 220
 221         spin_lock_irqsave(&chip->reg_lock, flags);
 222         val = (chip->awacs_reg[reg] >> shift) & 1;
 223         spin_unlock_irqrestore(&chip->reg_lock, flags);
 224         if (invert)
 225                 val = 1 - val;
 226         ucontrol->value.integer.value[0] = val;
 227         return 0;
 228 }
 229
 230 static int snd_pmac_awacs_put_switch(struct snd_kcontrol *kcontrol,
 231                                      struct snd_ctl_elem_value *ucontrol)
 232 {
 233         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 234         int reg = kcontrol->private_value & 0xff;
 235         int shift = (kcontrol->private_value >> 8) & 0xff;
 236         int invert = (kcontrol->private_value >> 16) & 1;
 237         int mask = 1 << shift;
 238         int val, changed;
 239         unsigned long flags;
 240
 241         spin_lock_irqsave(&chip->reg_lock, flags);
 242         val = chip->awacs_reg[reg] & ~mask;
 243         if (ucontrol->value.integer.value[0] != invert)
 244                 val |= mask;
 245         changed = chip->awacs_reg[reg] != val;
 246         if (changed)
 247                 snd_pmac_awacs_write_reg(chip, reg, val);
 248         spin_unlock_irqrestore(&chip->reg_lock, flags);
 249         return changed;
 250 }
 251
 252 #define AWACS_SWITCH(xname, xreg, xshift, xinvert) \
 253 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0, \
 254   .info = snd_pmac_boolean_mono_info, \
 255   .get = snd_pmac_awacs_get_switch, \
 256   .put = snd_pmac_awacs_put_switch, \
 257   .private_value = (xreg) | ((xshift) << 8) | ((xinvert) << 16) }
 258
 259
 260 #ifdef PMAC_AMP_AVAIL
 261 /*
 262  * controls for perch/whisper extension cards, e.g. G3 desktop
 263  *
 264  * TDA7433 connected via i2c address 0x45 (= 0x8a),
 265  * accessed through cuda
 266  */
 267 static void awacs_set_cuda(int reg, int val)
 268 {
 269         struct adb_request req;
 270         cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC, 0x8a,
 271                         reg, val);
 272         while (! req.complete)
 273                 cuda_poll();
 274 }
 275
 276 /*
 277  * level = 0 - 14, 7 = 0 dB
 278  */
 279 static void awacs_amp_set_tone(struct awacs_amp *amp, int bass, int treble)
 280 {
 281         amp->amp_tone[0] = bass;
 282         amp->amp_tone[1] = treble;
 283         if (bass > 7)
 284                 bass = (14 - bass) + 8;
 285         if (treble > 7)
 286                 treble = (14 - treble) + 8;
 287         awacs_set_cuda(2, (bass << 4) | treble);
 288 }
 289
 290 /*
 291  * vol = 0 - 31 (attenuation), 32 = mute bit, stereo
 292  */
 293 static int awacs_amp_set_vol(struct awacs_amp *amp, int index,
 294                              int lvol, int rvol, int do_check)
 295 {
 296         if (do_check && amp->amp_vol[index][0] == lvol &&
 297                         amp->amp_vol[index][1] == rvol)
 298                 return 0;
 299         awacs_set_cuda(3 + index, lvol);
 300         awacs_set_cuda(5 + index, rvol);
 301         amp->amp_vol[index][0] = lvol;
 302         amp->amp_vol[index][1] = rvol;
 303         return 1;
 304 }
 305
 306 /*
 307  * 0 = -79 dB, 79 = 0 dB, 99 = +20 dB
 308  */
 309 static void awacs_amp_set_master(struct awacs_amp *amp, int vol)
 310 {
 311         amp->amp_master = vol;
 312         if (vol <= 79)
 313                 vol = 32 + (79 - vol);
 314         else
 315                 vol = 32 - (vol - 79);
 316         awacs_set_cuda(1, vol);
 317 }
 318
 319 static void awacs_amp_free(struct snd_pmac *chip)
 320 {
 321         struct awacs_amp *amp = chip->mixer_data;
 322         snd_assert(amp, return);
 323         kfree(amp);
 324         chip->mixer_data = NULL;
 325         chip->mixer_free = NULL;
 326 }
 327
 328
 329 /*
 330  * mixer controls
 331  */
 332 static int snd_pmac_awacs_info_volume_amp(struct snd_kcontrol *kcontrol,
 333                                           struct snd_ctl_elem_info *uinfo)
 334 {
 335         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 336         uinfo->count = 2;
 337         uinfo->value.integer.min = 0;
 338         uinfo->value.integer.max = 31;
 339         return 0;
 340 }
 341
 342 static int snd_pmac_awacs_get_volume_amp(struct snd_kcontrol *kcontrol,
 343                                          struct snd_ctl_elem_value *ucontrol)
 344 {
 345         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 346         int index = kcontrol->private_value;
 347         struct awacs_amp *amp = chip->mixer_data;
 348         snd_assert(amp, return -EINVAL);
 349         snd_assert(index >= 0 && index <= 1, return -EINVAL);
 350         ucontrol->value.integer.value[0] = 31 - (amp->amp_vol[index][0] & 31);
 351         ucontrol->value.integer.value[1] = 31 - (amp->amp_vol[index][1] & 31);
 352         return 0;
 353 }
 354
 355 static int snd_pmac_awacs_put_volume_amp(struct snd_kcontrol *kcontrol,
 356                                          struct snd_ctl_elem_value *ucontrol)
 357 {
 358         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 359         int index = kcontrol->private_value;
 360         int vol[2];
 361         struct awacs_amp *amp = chip->mixer_data;
 362         snd_assert(amp, return -EINVAL);
 363         snd_assert(index >= 0 && index <= 1, return -EINVAL);
 364
 365         vol[0] = (31 - (ucontrol->value.integer.value[0] & 31))
 366                 | (amp->amp_vol[index][0] & 32);
 367         vol[1] = (31 - (ucontrol->value.integer.value[1] & 31))
 368                 | (amp->amp_vol[index][1] & 32);
 369         return awacs_amp_set_vol(amp, index, vol[0], vol[1], 1);
 370 }
 371
 372 static int snd_pmac_awacs_get_switch_amp(struct snd_kcontrol *kcontrol,
 373                                          struct snd_ctl_elem_value *ucontrol)
 374 {
 375         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 376         int index = kcontrol->private_value;
 377         struct awacs_amp *amp = chip->mixer_data;
 378         snd_assert(amp, return -EINVAL);
 379         snd_assert(index >= 0 && index <= 1, return -EINVAL);
 380         ucontrol->value.integer.value[0] = (amp->amp_vol[index][0] & 32)
 381                                         ? 0 : 1;
 382         ucontrol->value.integer.value[1] = (amp->amp_vol[index][1] & 32)
 383                                         ? 0 : 1;
 384         return 0;
 385 }
 386
 387 static int snd_pmac_awacs_put_switch_amp(struct snd_kcontrol *kcontrol,
 388                                          struct snd_ctl_elem_value *ucontrol)
 389 {
 390         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 391         int index = kcontrol->private_value;
 392         int vol[2];
 393         struct awacs_amp *amp = chip->mixer_data;
 394         snd_assert(amp, return -EINVAL);
 395         snd_assert(index >= 0 && index <= 1, return -EINVAL);
 396
 397         vol[0] = (ucontrol->value.integer.value[0] ? 0 : 32)
 398                 | (amp->amp_vol[index][0] & 31);
 399         vol[1] = (ucontrol->value.integer.value[1] ? 0 : 32)
 400                 | (amp->amp_vol[index][1] & 31);
 401         return awacs_amp_set_vol(amp, index, vol[0], vol[1], 1);
 402 }
 403
 404 static int snd_pmac_awacs_info_tone_amp(struct snd_kcontrol *kcontrol,
 405                                         struct snd_ctl_elem_info *uinfo)
 406 {
 407         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 408         uinfo->count = 1;
 409         uinfo->value.integer.min = 0;
 410         uinfo->value.integer.max = 14;
 411         return 0;
 412 }
 413
 414 static int snd_pmac_awacs_get_tone_amp(struct snd_kcontrol *kcontrol,
 415                                        struct snd_ctl_elem_value *ucontrol)
 416 {
 417         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 418         int index = kcontrol->private_value;
 419         struct awacs_amp *amp = chip->mixer_data;
 420         snd_assert(amp, return -EINVAL);
 421         snd_assert(index >= 0 && index <= 1, return -EINVAL);
 422         ucontrol->value.integer.value[0] = amp->amp_tone[index];
 423         return 0;
 424 }
 425
 426 static int snd_pmac_awacs_put_tone_amp(struct snd_kcontrol *kcontrol,
 427                                        struct snd_ctl_elem_value *ucontrol)
 428 {
 429         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 430         int index = kcontrol->private_value;
 431         struct awacs_amp *amp = chip->mixer_data;
 432         unsigned int val;
 433         snd_assert(amp, return -EINVAL);
 434         snd_assert(index >= 0 && index <= 1, return -EINVAL);
 435         val = ucontrol->value.integer.value[0];
 436         if (val > 14)
 437                 return -EINVAL;
 438         if (val != amp->amp_tone[index]) {
 439                 amp->amp_tone[index] = val;
 440                 awacs_amp_set_tone(amp, amp->amp_tone[0], amp->amp_tone[1]);
 441                 return 1;
 442         }
 443         return 0;
 444 }
 445
 446 static int snd_pmac_awacs_info_master_amp(struct snd_kcontrol *kcontrol,
 447                                           struct snd_ctl_elem_info *uinfo)
 448 {
 449         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 450         uinfo->count = 1;
 451         uinfo->value.integer.min = 0;
 452         uinfo->value.integer.max = 99;
 453         return 0;
 454 }
 455
 456 static int snd_pmac_awacs_get_master_amp(struct snd_kcontrol *kcontrol,
 457                                          struct snd_ctl_elem_value *ucontrol)
 458 {
 459         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 460         struct awacs_amp *amp = chip->mixer_data;
 461         snd_assert(amp, return -EINVAL);
 462         ucontrol->value.integer.value[0] = amp->amp_master;
 463         return 0;
 464 }
 465
 466 static int snd_pmac_awacs_put_master_amp(struct snd_kcontrol *kcontrol,
 467                                          struct snd_ctl_elem_value *ucontrol)
 468 {
 469         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 470         struct awacs_amp *amp = chip->mixer_data;
 471         unsigned int val;
 472         snd_assert(amp, return -EINVAL);
 473         val = ucontrol->value.integer.value[0];
 474         if (val > 99)
 475                 return -EINVAL;
 476         if (val != amp->amp_master) {
 477                 amp->amp_master = val;
 478                 awacs_amp_set_master(amp, amp->amp_master);
 479                 return 1;
 480         }
 481         return 0;
 482 }
 483
 484 #define AMP_CH_SPK      0
 485 #define AMP_CH_HD       1
 486
 487 static struct snd_kcontrol_new snd_pmac_awacs_amp_vol[] __initdata = {
 488         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 489           .name = "PC Speaker Playback Volume",
 490           .info = snd_pmac_awacs_info_volume_amp,
 491           .get = snd_pmac_awacs_get_volume_amp,
 492           .put = snd_pmac_awacs_put_volume_amp,
 493           .private_value = AMP_CH_SPK,
 494         },
 495         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 496           .name = "Headphone Playback Volume",
 497           .info = snd_pmac_awacs_info_volume_amp,
 498           .get = snd_pmac_awacs_get_volume_amp,
 499           .put = snd_pmac_awacs_put_volume_amp,
 500           .private_value = AMP_CH_HD,
 501         },
 502         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 503           .name = "Tone Control - Bass",
 504           .info = snd_pmac_awacs_info_tone_amp,
 505           .get = snd_pmac_awacs_get_tone_amp,
 506           .put = snd_pmac_awacs_put_tone_amp,
 507           .private_value = 0,
 508         },
 509         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 510           .name = "Tone Control - Treble",
 511           .info = snd_pmac_awacs_info_tone_amp,
 512           .get = snd_pmac_awacs_get_tone_amp,
 513           .put = snd_pmac_awacs_put_tone_amp,
 514           .private_value = 1,
 515         },
 516         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 517           .name = "Amp Master Playback Volume",
 518           .info = snd_pmac_awacs_info_master_amp,
 519           .get = snd_pmac_awacs_get_master_amp,
 520           .put = snd_pmac_awacs_put_master_amp,
 521         },
 522 };
 523
 524 static struct snd_kcontrol_new snd_pmac_awacs_amp_hp_sw __initdata = {
 525         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 526         .name = "Headphone Playback Switch",
 527         .info = snd_pmac_boolean_stereo_info,
 528         .get = snd_pmac_awacs_get_switch_amp,
 529         .put = snd_pmac_awacs_put_switch_amp,
 530         .private_value = AMP_CH_HD,
 531 };
 532
 533 static struct snd_kcontrol_new snd_pmac_awacs_amp_spk_sw __initdata = {
 534         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 535         .name = "PC Speaker Playback Switch",
 536         .info = snd_pmac_boolean_stereo_info,
 537         .get = snd_pmac_awacs_get_switch_amp,
 538         .put = snd_pmac_awacs_put_switch_amp,
 539         .private_value = AMP_CH_SPK,
 540 };
 541
 542 #endif /* PMAC_AMP_AVAIL */
 543
 544
 545 /*
 546  * mic boost for screamer
 547  */
 548 static int snd_pmac_screamer_mic_boost_info(struct snd_kcontrol *kcontrol,
 549                                             struct snd_ctl_elem_info *uinfo)
 550 {
 551         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 552         uinfo->count = 1;
 553         uinfo->value.integer.min = 0;
 554         uinfo->value.integer.max = 3;
 555         return 0;
 556 }
 557
 558 static int snd_pmac_screamer_mic_boost_get(struct snd_kcontrol *kcontrol,
 559                                            struct snd_ctl_elem_value *ucontrol)
 560 {
 561         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 562         int val = 0;
 563         unsigned long flags;
 564
 565         spin_lock_irqsave(&chip->reg_lock, flags);
 566         if (chip->awacs_reg[6] & MASK_MIC_BOOST)
 567                 val |= 2;
 568         if (chip->awacs_reg[0] & MASK_GAINLINE)
 569                 val |= 1;
 570         spin_unlock_irqrestore(&chip->reg_lock, flags);
 571         ucontrol->value.integer.value[0] = val;
 572         return 0;
 573 }
 574
 575 static int snd_pmac_screamer_mic_boost_put(struct snd_kcontrol *kcontrol,
 576                                            struct snd_ctl_elem_value *ucontrol)
 577 {
 578         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
 579         int changed = 0;
 580         int val0, val6;
 581         unsigned long flags;
 582
 583         spin_lock_irqsave(&chip->reg_lock, flags);
 584         val0 = chip->awacs_reg[0] & ~MASK_GAINLINE;
 585         val6 = chip->awacs_reg[6] & ~MASK_MIC_BOOST;
 586         if (ucontrol->value.integer.value[0] & 1)
 587                 val0 |= MASK_GAINLINE;
 588         if (ucontrol->value.integer.value[0] & 2)
 589                 val6 |= MASK_MIC_BOOST;
 590         if (val0 != chip->awacs_reg[0]) {
 591                 snd_pmac_awacs_write_reg(chip, 0, val0);
 592                 changed = 1;
 593         }
 594         if (val6 != chip->awacs_reg[6]) {
 595                 snd_pmac_awacs_write_reg(chip, 6, val6);
 596                 changed = 1;
 597         }
 598         spin_unlock_irqrestore(&chip->reg_lock, flags);
 599         return changed;
 600 }
 601
 602 /*
 603  * lists of mixer elements
 604  */
 605 static struct snd_kcontrol_new snd_pmac_awacs_mixers[] __initdata = {
 606         AWACS_SWITCH("Master Capture Switch", 1, SHIFT_LOOPTHRU, 0),
 607         AWACS_VOLUME("Master Capture Volume", 0, 4, 0),
 608 /*      AWACS_SWITCH("Unknown Playback Switch", 6, SHIFT_PAROUT0, 0), */
 609 };
 610
 611 static struct snd_kcontrol_new snd_pmac_screamer_mixers_beige[] __initdata = {
 612         AWACS_VOLUME("Master Playback Volume", 2, 6, 1),
 613         AWACS_VOLUME("Play-through Playback Volume", 5, 6, 1),
 614         AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
 615         AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_LINE, 0),
 616 };
 617
 618 static struct snd_kcontrol_new snd_pmac_screamer_mixers_imac[] __initdata = {
 619         AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
 620         AWACS_VOLUME("Master Playback Volume", 5, 6, 1),
 621         AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
 622 };
 623
 624 static struct snd_kcontrol_new snd_pmac_screamer_mixers_g4agp[] __initdata = {
 625         AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
 626         AWACS_VOLUME("Master Playback Volume", 5, 6, 1),
 627         AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
 628         AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
 629 };
 630
 631 static struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac7500[] __initdata = {
 632         AWACS_VOLUME("Line out Playback Volume", 2, 6, 1),
 633         AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
 634         AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
 635 };
 636
 637 static struct snd_kcontrol_new snd_pmac_awacs_mixers_pmac[] __initdata = {
 638         AWACS_VOLUME("Master Playback Volume", 2, 6, 1),
 639         AWACS_SWITCH("CD Capture Switch", 0, SHIFT_MUX_CD, 0),
 640 };
 641
 642 /* FIXME: is this correct order?
 643  * screamer (powerbook G3 pismo) seems to have different bits...
 644  */
 645 static struct snd_kcontrol_new snd_pmac_awacs_mixers2[] __initdata = {
 646         AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_LINE, 0),
 647         AWACS_SWITCH("Mic Capture Switch", 0, SHIFT_MUX_MIC, 0),
 648 };
 649
 650 static struct snd_kcontrol_new snd_pmac_screamer_mixers2[] __initdata = {
 651         AWACS_SWITCH("Line Capture Switch", 0, SHIFT_MUX_MIC, 0),
 652         AWACS_SWITCH("Mic Capture Switch", 0, SHIFT_MUX_LINE, 0),
 653 };
 654
 655 static struct snd_kcontrol_new snd_pmac_awacs_master_sw __initdata =
 656 AWACS_SWITCH("Master Playback Switch", 1, SHIFT_HDMUTE, 1);
 657
 658 static struct snd_kcontrol_new snd_pmac_awacs_master_sw_imac __initdata =
 659 AWACS_SWITCH("Line out Playback Switch", 1, SHIFT_HDMUTE, 1);
 660
 661 static struct snd_kcontrol_new snd_pmac_awacs_mic_boost[] __initdata = {
 662         AWACS_SWITCH("Mic Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
 663 };
 664
 665 static struct snd_kcontrol_new snd_pmac_screamer_mic_boost[] __initdata = {
 666         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 667           .name = "Mic Boost Capture Volume",
 668           .info = snd_pmac_screamer_mic_boost_info,
 669           .get = snd_pmac_screamer_mic_boost_get,
 670           .put = snd_pmac_screamer_mic_boost_put,
 671         },
 672 };
 673
 674 static struct snd_kcontrol_new snd_pmac_awacs_mic_boost_pmac7500[] __initdata =
 675 {
 676         AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
 677 };
 678
 679 static struct snd_kcontrol_new snd_pmac_screamer_mic_boost_beige[] __initdata =
 680 {
 681         AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
 682         AWACS_SWITCH("CD Boost Capture Switch", 6, SHIFT_MIC_BOOST, 0),
 683 };
 684
 685 static struct snd_kcontrol_new snd_pmac_screamer_mic_boost_imac[] __initdata =
 686 {
 687         AWACS_SWITCH("Line Boost Capture Switch", 0, SHIFT_GAINLINE, 0),
 688         AWACS_SWITCH("Mic Boost Capture Switch", 6, SHIFT_MIC_BOOST, 0),
 689 };
 690
 691 static struct snd_kcontrol_new snd_pmac_awacs_speaker_vol[] __initdata = {
 692         AWACS_VOLUME("PC Speaker Playback Volume", 4, 6, 1),
 693 };
 694
 695 static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw __initdata =
 696 AWACS_SWITCH("PC Speaker Playback Switch", 1, SHIFT_SPKMUTE, 1);
 697
 698 static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac1 __initdata =
 699 AWACS_SWITCH("PC Speaker Playback Switch", 1, SHIFT_PAROUT1, 1);
 700
 701 static struct snd_kcontrol_new snd_pmac_awacs_speaker_sw_imac2 __initdata =
 702 AWACS_SWITCH("PC Speaker Playback Switch", 1, SHIFT_PAROUT1, 0);
 703
 704
 705 /*
 706  * add new mixer elements to the card
 707  */
 708 static int build_mixers(struct snd_pmac *chip, int nums,
 709                         struct snd_kcontrol_new *mixers)
 710 {
 711         int i, err;
 712
 713         for (i = 0; i < nums; i++) {
 714                 err = snd_ctl_add(chip->card, snd_ctl_new1(&mixers[i], chip));
 715                 if (err < 0)
 716                         return err;
 717         }
 718         return 0;
 719 }
 720
 721
 722 /*
 723  * restore all registers
 724  */
 725 static void awacs_restore_all_regs(struct snd_pmac *chip)
 726 {
 727         snd_pmac_awacs_write_noreg(chip, 0, chip->awacs_reg[0]);
 728         snd_pmac_awacs_write_noreg(chip, 1, chip->awacs_reg[1]);
 729         snd_pmac_awacs_write_noreg(chip, 2, chip->awacs_reg[2]);
 730         snd_pmac_awacs_write_noreg(chip, 4, chip->awacs_reg[4]);
 731         if (chip->model == PMAC_SCREAMER) {
 732                 snd_pmac_awacs_write_noreg(chip, 5, chip->awacs_reg[5]);
 733                 snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
 734                 snd_pmac_awacs_write_noreg(chip, 7, chip->awacs_reg[7]);
 735         }
 736 }
 737
 738 #ifdef CONFIG_PM
 739 static void snd_pmac_awacs_suspend(struct snd_pmac *chip)
 740 {
 741         snd_pmac_awacs_write_noreg(chip, 1, (chip->awacs_reg[1]
 742                                              | MASK_AMUTE | MASK_CMUTE));
 743 }
 744
 745 static void snd_pmac_awacs_resume(struct snd_pmac *chip)
 746 {
 747         if (machine_is_compatible("PowerBook3,1")
 748             || machine_is_compatible("PowerBook3,2")) {
 749                 msleep(100);
 750                 snd_pmac_awacs_write_reg(chip, 1,
 751                         chip->awacs_reg[1] & ~MASK_PAROUT);
 752                 msleep(300);
 753         }
 754
 755         awacs_restore_all_regs(chip);
 756         if (chip->model == PMAC_SCREAMER) {
 757                 /* reset power bits in reg 6 */
 758                 mdelay(5);
 759                 snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
 760         }
 761         screamer_recalibrate(chip);
 762 #ifdef PMAC_AMP_AVAIL
 763         if (chip->mixer_data) {
 764                 struct awacs_amp *amp = chip->mixer_data;
 765                 awacs_amp_set_vol(amp, 0,
 766                                   amp->amp_vol[0][0], amp->amp_vol[0][1], 0);
 767                 awacs_amp_set_vol(amp, 1,
 768                                   amp->amp_vol[1][0], amp->amp_vol[1][1], 0);
 769                 awacs_amp_set_tone(amp, amp->amp_tone[0], amp->amp_tone[1]);
 770                 awacs_amp_set_master(amp, amp->amp_master);
 771         }
 772 #endif
 773 }
 774 #endif /* CONFIG_PM */
 775
 776 #define IS_PM7500 (machine_is_compatible("AAPL,7500"))
 777 #define IS_BEIGE (machine_is_compatible("AAPL,Gossamer"))
 778 #define IS_IMAC1 (machine_is_compatible("PowerMac2,1"))
 779 #define IS_IMAC2 (machine_is_compatible("PowerMac2,2") \
 780                 || machine_is_compatible("PowerMac4,1"))
 781 #define IS_G4AGP (machine_is_compatible("PowerMac3,1"))
 782
 783 static int imac1, imac2;
 784
 785 #ifdef PMAC_SUPPORT_AUTOMUTE
 786 /*
 787  * auto-mute stuffs
 788  */
 789 static int snd_pmac_awacs_detect_headphone(struct snd_pmac *chip)
 790 {
 791         return (in_le32(&chip->awacs->codec_stat) & chip->hp_stat_mask) ? 1 : 0;
 792 }
 793
 794 #ifdef PMAC_AMP_AVAIL
 795 static int toggle_amp_mute(struct awacs_amp *amp, int index, int mute)
 796 {
 797         int vol[2];
 798         vol[0] = amp->amp_vol[index][0] & 31;
 799         vol[1] = amp->amp_vol[index][1] & 31;
 800         if (mute) {
 801                 vol[0] |= 32;
 802                 vol[1] |= 32;
 803         }
 804         return awacs_amp_set_vol(amp, index, vol[0], vol[1], 1);
 805 }
 806 #endif
 807
 808 static void snd_pmac_awacs_update_automute(struct snd_pmac *chip, int do_notify)
 809 {
 810         if (chip->auto_mute) {
 811 #ifdef PMAC_AMP_AVAIL
 812                 if (chip->mixer_data) {
 813                         struct awacs_amp *amp = chip->mixer_data;
 814                         int changed;
 815                         if (snd_pmac_awacs_detect_headphone(chip)) {
 816                                 changed = toggle_amp_mute(amp, AMP_CH_HD, 0);
 817                                 changed |= toggle_amp_mute(amp, AMP_CH_SPK, 1);
 818                         } else {
 819                                 changed = toggle_amp_mute(amp, AMP_CH_HD, 1);
 820                                 changed |= toggle_amp_mute(amp, AMP_CH_SPK, 0);
 821                         }
 822                         if (do_notify && ! changed)
 823                                 return;
 824                 } else
 825 #endif
 826                 {
 827                         int reg = chip->awacs_reg[1]
 828                                 | (MASK_HDMUTE | MASK_SPKMUTE);
 829                         if (imac1) {
 830                                 reg &= ~MASK_SPKMUTE;
 831                                 reg |= MASK_PAROUT1;
 832                         } else if (imac2) {
 833                                 reg &= ~MASK_SPKMUTE;
 834                                 reg &= ~MASK_PAROUT1;
 835                         }
 836                         if (snd_pmac_awacs_detect_headphone(chip))
 837                                 reg &= ~MASK_HDMUTE;
 838                         else if (imac1)
 839                                 reg &= ~MASK_PAROUT1;
 840                         else if (imac2)
 841                                 reg |= MASK_PAROUT1;
 842                         else
 843                                 reg &= ~MASK_SPKMUTE;
 844                         if (do_notify && reg == chip->awacs_reg[1])
 845                                 return;
 846                         snd_pmac_awacs_write_reg(chip, 1, reg);
 847                 }
 848                 if (do_notify) {
 849                         snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
 850                                        &chip->master_sw_ctl->id);
 851                         snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
 852                                        &chip->speaker_sw_ctl->id);
 853                         snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
 854                                        &chip->hp_detect_ctl->id);
 855                 }
 856         }
 857 }
 858 #endif /* PMAC_SUPPORT_AUTOMUTE */
 859
 860
 861 /*
 862  * initialize chip
 863  */
 864 int __init
 865 snd_pmac_awacs_init(struct snd_pmac *chip)
 866 {
 867         int pm7500 = IS_PM7500;
 868         int beige = IS_BEIGE;
 869         int g4agp = IS_G4AGP;
 870         int imac;
 871         int err, vol;
 872
 873         imac1 = IS_IMAC1;
 874         imac2 = IS_IMAC2;
 875         imac = imac1 || imac2;
 876         /* looks like MASK_GAINLINE triggers something, so we set here
 877          * as start-up
 878          */
 879         chip->awacs_reg[0] = MASK_MUX_CD | 0xff | MASK_GAINLINE;
 880         chip->awacs_reg[1] = MASK_CMUTE | MASK_AMUTE;
 881         /* FIXME: Only machines with external SRS module need MASK_PAROUT */
 882         if (chip->has_iic || chip->device_id == 0x5 ||
 883             /* chip->_device_id == 0x8 || */
 884             chip->device_id == 0xb)
 885                 chip->awacs_reg[1] |= MASK_PAROUT;
 886         /* get default volume from nvram */
 887         // vol = (~nvram_read_byte(0x1308) & 7) << 1;
 888         // vol = ((pmac_xpram_read( 8 ) & 7 ) << 1 );
 889         vol = 0x0f; /* no, on alsa, muted as default */
 890         vol = vol + (vol << 6);
 891         chip->awacs_reg[2] = vol;
 892         chip->awacs_reg[4] = vol;
 893         if (chip->model == PMAC_SCREAMER) {
 894                 /* FIXME: screamer has loopthru vol control */
 895                 chip->awacs_reg[5] = vol;
 896                 /* FIXME: maybe should be vol << 3 for PCMCIA speaker */
 897                 chip->awacs_reg[6] = MASK_MIC_BOOST;
 898                 chip->awacs_reg[7] = 0;
 899         }
 900
 901         awacs_restore_all_regs(chip);
 902         chip->manufacturer = (in_le32(&chip->awacs->codec_stat) >> 8) & 0xf;
 903         screamer_recalibrate(chip);
 904
 905         chip->revision = (in_le32(&chip->awacs->codec_stat) >> 12) & 0xf;
 906 #ifdef PMAC_AMP_AVAIL
 907         if (chip->revision == 3 && chip->has_iic && CHECK_CUDA_AMP()) {
 908                 struct awacs_amp *amp = kzalloc(sizeof(*amp), GFP_KERNEL);
 909                 if (! amp)
 910                         return -ENOMEM;
 911                 chip->mixer_data = amp;
 912                 chip->mixer_free = awacs_amp_free;
 913                 /* mute and zero vol */
 914                 awacs_amp_set_vol(amp, 0, 63, 63, 0);
 915                 awacs_amp_set_vol(amp, 1, 63, 63, 0);
 916                 awacs_amp_set_tone(amp, 7, 7); /* 0 dB */
 917                 awacs_amp_set_master(amp, 79); /* 0 dB */
 918         }
 919 #endif /* PMAC_AMP_AVAIL */
 920
 921         if (chip->hp_stat_mask == 0) {
 922                 /* set headphone-jack detection bit */
 923                 switch (chip->model) {
 924                 case PMAC_AWACS:
 925                         chip->hp_stat_mask = pm7500 ? MASK_HDPCONN
 926                                 : MASK_LOCONN;
 927                         break;
 928                 case PMAC_SCREAMER:
 929                         switch (chip->device_id) {
 930                         case 0x08:
 931                         case 0x0B:
 932                                 chip->hp_stat_mask = imac
 933                                         ? MASK_LOCONN_IMAC |
 934                                         MASK_HDPLCONN_IMAC |
 935                                         MASK_HDPRCONN_IMAC
 936                                         : MASK_HDPCONN;
 937                                 break;
 938                         case 0x00:
 939                         case 0x05:
 940                                 chip->hp_stat_mask = MASK_LOCONN;
 941                                 break;
 942                         default:
 943                                 chip->hp_stat_mask = MASK_HDPCONN;
 944                                 break;
 945                         }
 946                         break;
 947                 default:
 948                         snd_BUG();
 949                         break;
 950                 }
 951         }
 952
 953         /*
 954          * build mixers
 955          */
 956         strcpy(chip->card->mixername, "PowerMac AWACS");
 957
 958         err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mixers),
 959                                 snd_pmac_awacs_mixers);
 960         if (err < 0)
 961                 return err;
 962         if (beige || g4agp)
 963                 ;
 964         else if (chip->model == PMAC_SCREAMER)
 965                 err = build_mixers(chip, ARRAY_SIZE(snd_pmac_screamer_mixers2),
 966                                    snd_pmac_screamer_mixers2);
 967         else if (!pm7500)
 968                 err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mixers2),
 969                                    snd_pmac_awacs_mixers2);
 970         if (err < 0)
 971                 return err;
 972         if (pm7500)
 973                 err = build_mixers(chip,
 974                                    ARRAY_SIZE(snd_pmac_awacs_mixers_pmac7500),
 975                                    snd_pmac_awacs_mixers_pmac7500);
 976         else if (beige)
 977                 err = build_mixers(chip,
 978                                    ARRAY_SIZE(snd_pmac_screamer_mixers_beige),
 979                                    snd_pmac_screamer_mixers_beige);
 980         else if (imac)
 981                 err = build_mixers(chip,
 982                                    ARRAY_SIZE(snd_pmac_screamer_mixers_imac),
 983                                    snd_pmac_screamer_mixers_imac);
 984         else if (g4agp)
 985                 err = build_mixers(chip,
 986                                    ARRAY_SIZE(snd_pmac_screamer_mixers_g4agp),
 987                                    snd_pmac_screamer_mixers_g4agp);
 988         else
 989                 err = build_mixers(chip,
 990                                    ARRAY_SIZE(snd_pmac_awacs_mixers_pmac),
 991                                    snd_pmac_awacs_mixers_pmac);
 992         if (err < 0)
 993                 return err;
 994         chip->master_sw_ctl = snd_ctl_new1((pm7500 || imac || g4agp)
 995                         ? &snd_pmac_awacs_master_sw_imac
 996                         : &snd_pmac_awacs_master_sw, chip);
 997         err = snd_ctl_add(chip->card, chip->master_sw_ctl);
 998         if (err < 0)
 999                 return err;
1000 #ifdef PMAC_AMP_AVAIL
1001         if (chip->mixer_data) {
1002                 /* use amplifier.  the signal is connected from route A
1003                  * to the amp.  the amp has its headphone and speaker
1004                  * volumes and mute switches, so we use them instead of
1005                  * screamer registers.
1006                  * in this case, it seems the route C is not used.
1007                  */
1008                 err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_amp_vol),
1009                                         snd_pmac_awacs_amp_vol);
1010                 if (err < 0)
1011                         return err;
1012                 /* overwrite */
1013                 chip->master_sw_ctl = snd_ctl_new1(&snd_pmac_awacs_amp_hp_sw,
1014                                                         chip);
1015                 err = snd_ctl_add(chip->card, chip->master_sw_ctl);
1016                 if (err < 0)
1017                         return err;
1018                 chip->speaker_sw_ctl = snd_ctl_new1(&snd_pmac_awacs_amp_spk_sw,
1019                                                         chip);
1020                 err = snd_ctl_add(chip->card, chip->speaker_sw_ctl);
1021                 if (err < 0)
1022                         return err;
1023         } else
1024 #endif /* PMAC_AMP_AVAIL */
1025         {
1026                 /* route A = headphone, route C = speaker */
1027                 err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_speaker_vol),
1028                                         snd_pmac_awacs_speaker_vol);
1029                 if (err < 0)
1030                         return err;
1031                 chip->speaker_sw_ctl = snd_ctl_new1(imac1
1032                                 ? &snd_pmac_awacs_speaker_sw_imac1
1033                                 : imac2
1034                                 ? &snd_pmac_awacs_speaker_sw_imac2
1035                                 : &snd_pmac_awacs_speaker_sw, chip);
1036                 err = snd_ctl_add(chip->card, chip->speaker_sw_ctl);
1037                 if (err < 0)
1038                         return err;
1039         }
1040
1041         if (beige || g4agp)
1042                 err = build_mixers(chip,
1043                                 ARRAY_SIZE(snd_pmac_screamer_mic_boost_beige),
1044                                 snd_pmac_screamer_mic_boost_beige);
1045         else if (imac)
1046                 err = build_mixers(chip,
1047                                 ARRAY_SIZE(snd_pmac_screamer_mic_boost_imac),
1048                                 snd_pmac_screamer_mic_boost_imac);
1049         else if (chip->model == PMAC_SCREAMER)
1050                 err = build_mixers(chip,
1051                                 ARRAY_SIZE(snd_pmac_screamer_mic_boost),
1052                                 snd_pmac_screamer_mic_boost);
1053         else if (pm7500)
1054                 err = build_mixers(chip,
1055                                 ARRAY_SIZE(snd_pmac_awacs_mic_boost_pmac7500),
1056                                 snd_pmac_awacs_mic_boost_pmac7500);
1057         else
1058                 err = build_mixers(chip, ARRAY_SIZE(snd_pmac_awacs_mic_boost),
1059                                 snd_pmac_awacs_mic_boost);
1060         if (err < 0)
1061                 return err;
1062
1063         /*
1064          * set lowlevel callbacks
1065          */
1066         chip->set_format = snd_pmac_awacs_set_format;
1067 #ifdef CONFIG_PM
1068         chip->suspend = snd_pmac_awacs_suspend;
1069         chip->resume = snd_pmac_awacs_resume;
1070 #endif
1071 #ifdef PMAC_SUPPORT_AUTOMUTE
1072         err = snd_pmac_add_automute(chip);
1073         if (err < 0)
1074                 return err;
1075         chip->detect_headphone = snd_pmac_awacs_detect_headphone;
1076         chip->update_automute = snd_pmac_awacs_update_automute;
1077         snd_pmac_awacs_update_automute(chip, 0); /* update the status only */
1078 #endif
1079         if (chip->model == PMAC_SCREAMER) {
1080                 snd_pmac_awacs_write_noreg(chip, 6, chip->awacs_reg[6]);
1081                 snd_pmac_awacs_write_noreg(chip, 0, chip->awacs_reg[0]);
1082         }
1083
1084         return 0;
1085 }