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

   1 /*
   2  * PMac DBDMA 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 <sound/driver.h>
  24 #include <asm/io.h>
  25 #include <asm/irq.h>
  26 #include <linux/init.h>
  27 #include <linux/delay.h>
  28 #include <linux/slab.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/pci.h>
  31 #include <linux/dma-mapping.h>
  32 #include <sound/core.h>
  33 #include "pmac.h"
  34 #include <sound/pcm_params.h>
  35 #include <asm/pmac_feature.h>
  36 #include <asm/pci-bridge.h>
  37
  38
  39 #ifdef CONFIG_PM
  40 static int snd_pmac_register_sleep_notifier(pmac_t *chip);
  41 static int snd_pmac_unregister_sleep_notifier(pmac_t *chip);
  42 static int snd_pmac_suspend(snd_card_t *card, pm_message_t state);
  43 static int snd_pmac_resume(snd_card_t *card);
  44 #endif
  45
  46
  47 /* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
  48 static int awacs_freqs[8] = {
  49         44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
  50 };
  51 /* fixed frequency table for tumbler */
  52 static int tumbler_freqs[1] = {
  53         44100
  54 };
  55
  56 /*
  57  * allocate DBDMA command arrays
  58  */
  59 static int snd_pmac_dbdma_alloc(pmac_t *chip, pmac_dbdma_t *rec, int size)
  60 {
  61         unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1);
  62
  63         rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,
  64                                         &rec->dma_base, GFP_KERNEL);
  65         if (rec->space == NULL)
  66                 return -ENOMEM;
  67         rec->size = size;
  68         memset(rec->space, 0, rsize);
  69         rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
  70         rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);
  71
  72         return 0;
  73 }
  74
  75 static void snd_pmac_dbdma_free(pmac_t *chip, pmac_dbdma_t *rec)
  76 {
  77         if (rec) {
  78                 unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);
  79
  80                 dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);
  81         }
  82 }
  83
  84
  85 /*
  86  * pcm stuff
  87  */
  88
  89 /*
  90  * look up frequency table
  91  */
  92
  93 unsigned int snd_pmac_rate_index(pmac_t *chip, pmac_stream_t *rec, unsigned int rate)
  94 {
  95         int i, ok, found;
  96
  97         ok = rec->cur_freqs;
  98         if (rate > chip->freq_table[0])
  99                 return 0;
 100         found = 0;
 101         for (i = 0; i < chip->num_freqs; i++, ok >>= 1) {
 102                 if (! (ok & 1)) continue;
 103                 found = i;
 104                 if (rate >= chip->freq_table[i])
 105                         break;
 106         }
 107         return found;
 108 }
 109
 110 /*
 111  * check whether another stream is active
 112  */
 113 static inline int another_stream(int stream)
 114 {
 115         return (stream == SNDRV_PCM_STREAM_PLAYBACK) ?
 116                 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
 117 }
 118
 119 /*
 120  * allocate buffers
 121  */
 122 static int snd_pmac_pcm_hw_params(snd_pcm_substream_t *subs,
 123                                   snd_pcm_hw_params_t *hw_params)
 124 {
 125         return snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw_params));
 126 }
 127
 128 /*
 129  * release buffers
 130  */
 131 static int snd_pmac_pcm_hw_free(snd_pcm_substream_t *subs)
 132 {
 133         snd_pcm_lib_free_pages(subs);
 134         return 0;
 135 }
 136
 137 /*
 138  * get a stream of the opposite direction
 139  */
 140 static pmac_stream_t *snd_pmac_get_stream(pmac_t *chip, int stream)
 141 {
 142         switch (stream) {
 143         case SNDRV_PCM_STREAM_PLAYBACK:
 144                 return &chip->playback;
 145         case SNDRV_PCM_STREAM_CAPTURE:
 146                 return &chip->capture;
 147         default:
 148                 snd_BUG();
 149                 return NULL;
 150         }
 151 }
 152
 153 /*
 154  * wait while run status is on
 155  */
 156 static inline void
 157 snd_pmac_wait_ack(pmac_stream_t *rec)
 158 {
 159         int timeout = 50000;
 160         while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0)
 161                 udelay(1);
 162 }
 163
 164 /*
 165  * set the format and rate to the chip.
 166  * call the lowlevel function if defined (e.g. for AWACS).
 167  */
 168 static void snd_pmac_pcm_set_format(pmac_t *chip)
 169 {
 170         /* set up frequency and format */
 171         out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8));
 172         out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0);
 173         if (chip->set_format)
 174                 chip->set_format(chip);
 175 }
 176
 177 /*
 178  * stop the DMA transfer
 179  */
 180 static inline void snd_pmac_dma_stop(pmac_stream_t *rec)
 181 {
 182         out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
 183         snd_pmac_wait_ack(rec);
 184 }
 185
 186 /*
 187  * set the command pointer address
 188  */
 189 static inline void snd_pmac_dma_set_command(pmac_stream_t *rec, pmac_dbdma_t *cmd)
 190 {
 191         out_le32(&rec->dma->cmdptr, cmd->addr);
 192 }
 193
 194 /*
 195  * start the DMA
 196  */
 197 static inline void snd_pmac_dma_run(pmac_stream_t *rec, int status)
 198 {
 199         out_le32(&rec->dma->control, status | (status << 16));
 200 }
 201
 202
 203 /*
 204  * prepare playback/capture stream
 205  */
 206 static int snd_pmac_pcm_prepare(pmac_t *chip, pmac_stream_t *rec, snd_pcm_substream_t *subs)
 207 {
 208         int i;
 209         volatile struct dbdma_cmd __iomem *cp;
 210         snd_pcm_runtime_t *runtime = subs->runtime;
 211         int rate_index;
 212         long offset;
 213         pmac_stream_t *astr;
 214
 215         rec->dma_size = snd_pcm_lib_buffer_bytes(subs);
 216         rec->period_size = snd_pcm_lib_period_bytes(subs);
 217         rec->nperiods = rec->dma_size / rec->period_size;
 218         rec->cur_period = 0;
 219         rate_index = snd_pmac_rate_index(chip, rec, runtime->rate);
 220
 221         /* set up constraints */
 222         astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
 223         if (! astr)
 224                 return -EINVAL;
 225         astr->cur_freqs = 1 << rate_index;
 226         astr->cur_formats = 1 << runtime->format;
 227         chip->rate_index = rate_index;
 228         chip->format = runtime->format;
 229
 230         /* We really want to execute a DMA stop command, after the AWACS
 231          * is initialized.
 232          * For reasons I don't understand, it stops the hissing noise
 233          * common to many PowerBook G3 systems and random noise otherwise
 234          * captured on iBook2's about every third time. -ReneR
 235          */
 236         spin_lock_irq(&chip->reg_lock);
 237         snd_pmac_dma_stop(rec);
 238         st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
 239         snd_pmac_dma_set_command(rec, &chip->extra_dma);
 240         snd_pmac_dma_run(rec, RUN);
 241         spin_unlock_irq(&chip->reg_lock);
 242         mdelay(5);
 243         spin_lock_irq(&chip->reg_lock);
 244         /* continuous DMA memory type doesn't provide the physical address,
 245          * so we need to resolve the address here...
 246          */
 247         offset = runtime->dma_addr;
 248         for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {
 249                 st_le32(&cp->phy_addr, offset);
 250                 st_le16(&cp->req_count, rec->period_size);
 251                 /*st_le16(&cp->res_count, 0);*/
 252                 st_le16(&cp->xfer_status, 0);
 253                 offset += rec->period_size;
 254         }
 255         /* make loop */
 256         st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
 257         st_le32(&cp->cmd_dep, rec->cmd.addr);
 258
 259         snd_pmac_dma_stop(rec);
 260         snd_pmac_dma_set_command(rec, &rec->cmd);
 261         spin_unlock_irq(&chip->reg_lock);
 262
 263         return 0;
 264 }
 265
 266
 267 /*
 268  * PCM trigger/stop
 269  */
 270 static int snd_pmac_pcm_trigger(pmac_t *chip, pmac_stream_t *rec,
 271                                 snd_pcm_substream_t *subs, int cmd)
 272 {
 273         volatile struct dbdma_cmd __iomem *cp;
 274         int i, command;
 275
 276         switch (cmd) {
 277         case SNDRV_PCM_TRIGGER_START:
 278         case SNDRV_PCM_TRIGGER_RESUME:
 279                 if (rec->running)
 280                         return -EBUSY;
 281                 command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ?
 282                            OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS;
 283                 spin_lock(&chip->reg_lock);
 284                 snd_pmac_beep_stop(chip);
 285                 snd_pmac_pcm_set_format(chip);
 286                 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
 287                         out_le16(&cp->command, command);
 288                 snd_pmac_dma_set_command(rec, &rec->cmd);
 289                 (void)in_le32(&rec->dma->status);
 290                 snd_pmac_dma_run(rec, RUN|WAKE);
 291                 rec->running = 1;
 292                 spin_unlock(&chip->reg_lock);
 293                 break;
 294
 295         case SNDRV_PCM_TRIGGER_STOP:
 296         case SNDRV_PCM_TRIGGER_SUSPEND:
 297                 spin_lock(&chip->reg_lock);
 298                 rec->running = 0;
 299                 /*printk("stopped!!\n");*/
 300                 snd_pmac_dma_stop(rec);
 301                 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)
 302                         out_le16(&cp->command, DBDMA_STOP);
 303                 spin_unlock(&chip->reg_lock);
 304                 break;
 305
 306         default:
 307                 return -EINVAL;
 308         }
 309
 310         return 0;
 311 }
 312
 313 /*
 314  * return the current pointer
 315  */
 316 inline
 317 static snd_pcm_uframes_t snd_pmac_pcm_pointer(pmac_t *chip, pmac_stream_t *rec,
 318                                               snd_pcm_substream_t *subs)
 319 {
 320         int count = 0;
 321
 322 #if 1 /* hmm.. how can we get the current dma pointer?? */
 323         int stat;
 324         volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];
 325         stat = ld_le16(&cp->xfer_status);
 326         if (stat & (ACTIVE|DEAD)) {
 327                 count = in_le16(&cp->res_count);
 328                 if (count)
 329                         count = rec->period_size - count;
 330         }
 331 #endif
 332         count += rec->cur_period * rec->period_size;
 333         /*printk("pointer=%d\n", count);*/
 334         return bytes_to_frames(subs->runtime, count);
 335 }
 336
 337 /*
 338  * playback
 339  */
 340
 341 static int snd_pmac_playback_prepare(snd_pcm_substream_t *subs)
 342 {
 343         pmac_t *chip = snd_pcm_substream_chip(subs);
 344         return snd_pmac_pcm_prepare(chip, &chip->playback, subs);
 345 }
 346
 347 static int snd_pmac_playback_trigger(snd_pcm_substream_t *subs,
 348                                      int cmd)
 349 {
 350         pmac_t *chip = snd_pcm_substream_chip(subs);
 351         return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd);
 352 }
 353
 354 static snd_pcm_uframes_t snd_pmac_playback_pointer(snd_pcm_substream_t *subs)
 355 {
 356         pmac_t *chip = snd_pcm_substream_chip(subs);
 357         return snd_pmac_pcm_pointer(chip, &chip->playback, subs);
 358 }
 359
 360
 361 /*
 362  * capture
 363  */
 364
 365 static int snd_pmac_capture_prepare(snd_pcm_substream_t *subs)
 366 {
 367         pmac_t *chip = snd_pcm_substream_chip(subs);
 368         return snd_pmac_pcm_prepare(chip, &chip->capture, subs);
 369 }
 370
 371 static int snd_pmac_capture_trigger(snd_pcm_substream_t *subs,
 372                                     int cmd)
 373 {
 374         pmac_t *chip = snd_pcm_substream_chip(subs);
 375         return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd);
 376 }
 377
 378 static snd_pcm_uframes_t snd_pmac_capture_pointer(snd_pcm_substream_t *subs)
 379 {
 380         pmac_t *chip = snd_pcm_substream_chip(subs);
 381         return snd_pmac_pcm_pointer(chip, &chip->capture, subs);
 382 }
 383
 384
 385 /*
 386  * update playback/capture pointer from interrupts
 387  */
 388 static void snd_pmac_pcm_update(pmac_t *chip, pmac_stream_t *rec)
 389 {
 390         volatile struct dbdma_cmd __iomem *cp;
 391         int c;
 392         int stat;
 393
 394         spin_lock(&chip->reg_lock);
 395         if (rec->running) {
 396                 cp = &rec->cmd.cmds[rec->cur_period];
 397                 for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */
 398                         stat = ld_le16(&cp->xfer_status);
 399                         if (! (stat & ACTIVE))
 400                                 break;
 401                         /*printk("update frag %d\n", rec->cur_period);*/
 402                         st_le16(&cp->xfer_status, 0);
 403                         st_le16(&cp->req_count, rec->period_size);
 404                         /*st_le16(&cp->res_count, 0);*/
 405                         rec->cur_period++;
 406                         if (rec->cur_period >= rec->nperiods) {
 407                                 rec->cur_period = 0;
 408                                 cp = rec->cmd.cmds;
 409                         } else
 410                                 cp++;
 411                         spin_unlock(&chip->reg_lock);
 412                         snd_pcm_period_elapsed(rec->substream);
 413                         spin_lock(&chip->reg_lock);
 414                 }
 415         }
 416         spin_unlock(&chip->reg_lock);
 417 }
 418
 419
 420 /*
 421  * hw info
 422  */
 423
 424 static snd_pcm_hardware_t snd_pmac_playback =
 425 {
 426         .info =                 (SNDRV_PCM_INFO_INTERLEAVED |
 427                                  SNDRV_PCM_INFO_MMAP |
 428                                  SNDRV_PCM_INFO_MMAP_VALID |
 429                                  SNDRV_PCM_INFO_RESUME),
 430         .formats =              SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
 431         .rates =                SNDRV_PCM_RATE_8000_44100,
 432         .rate_min =             7350,
 433         .rate_max =             44100,
 434         .channels_min =         2,
 435         .channels_max =         2,
 436         .buffer_bytes_max =     131072,
 437         .period_bytes_min =     256,
 438         .period_bytes_max =     16384,
 439         .periods_min =          3,
 440         .periods_max =          PMAC_MAX_FRAGS,
 441 };
 442
 443 static snd_pcm_hardware_t snd_pmac_capture =
 444 {
 445         .info =                 (SNDRV_PCM_INFO_INTERLEAVED |
 446                                  SNDRV_PCM_INFO_MMAP |
 447                                  SNDRV_PCM_INFO_MMAP_VALID |
 448                                  SNDRV_PCM_INFO_RESUME),
 449         .formats =              SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
 450         .rates =                SNDRV_PCM_RATE_8000_44100,
 451         .rate_min =             7350,
 452         .rate_max =             44100,
 453         .channels_min =         2,
 454         .channels_max =         2,
 455         .buffer_bytes_max =     131072,
 456         .period_bytes_min =     256,
 457         .period_bytes_max =     16384,
 458         .periods_min =          3,
 459         .periods_max =          PMAC_MAX_FRAGS,
 460 };
 461
 462
 463 #if 0 // NYI
 464 static int snd_pmac_hw_rule_rate(snd_pcm_hw_params_t *params,
 465                                  snd_pcm_hw_rule_t *rule)
 466 {
 467         pmac_t *chip = rule->private;
 468         pmac_stream_t *rec = snd_pmac_get_stream(chip, rule->deps[0]);
 469         int i, freq_table[8], num_freqs;
 470
 471         if (! rec)
 472                 return -EINVAL;
 473         num_freqs = 0;
 474         for (i = chip->num_freqs - 1; i >= 0; i--) {
 475                 if (rec->cur_freqs & (1 << i))
 476                         freq_table[num_freqs++] = chip->freq_table[i];
 477         }
 478
 479         return snd_interval_list(hw_param_interval(params, rule->var),
 480                                  num_freqs, freq_table, 0);
 481 }
 482
 483 static int snd_pmac_hw_rule_format(snd_pcm_hw_params_t *params,
 484                                    snd_pcm_hw_rule_t *rule)
 485 {
 486         pmac_t *chip = rule->private;
 487         pmac_stream_t *rec = snd_pmac_get_stream(chip, rule->deps[0]);
 488
 489         if (! rec)
 490                 return -EINVAL;
 491         return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
 492                                    rec->cur_formats);
 493 }
 494 #endif // NYI
 495
 496 static int snd_pmac_pcm_open(pmac_t *chip, pmac_stream_t *rec, snd_pcm_substream_t *subs)
 497 {
 498         snd_pcm_runtime_t *runtime = subs->runtime;
 499         int i, j, fflags;
 500         static int typical_freqs[] = {
 501                 44100,
 502                 22050,
 503                 11025,
 504                 0,
 505         };
 506         static int typical_freq_flags[] = {
 507                 SNDRV_PCM_RATE_44100,
 508                 SNDRV_PCM_RATE_22050,
 509                 SNDRV_PCM_RATE_11025,
 510                 0,
 511         };
 512
 513         /* look up frequency table and fill bit mask */
 514         runtime->hw.rates = 0;
 515         fflags = chip->freqs_ok;
 516         for (i = 0; typical_freqs[i]; i++) {
 517                 for (j = 0; j < chip->num_freqs; j++) {
 518                         if ((chip->freqs_ok & (1 << j)) &&
 519                             chip->freq_table[j] == typical_freqs[i]) {
 520                                 runtime->hw.rates |= typical_freq_flags[i];
 521                                 fflags &= ~(1 << j);
 522                                 break;
 523                         }
 524                 }
 525         }
 526         if (fflags) /* rest */
 527                 runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
 528
 529         /* check for minimum and maximum rates */
 530         for (i = 0; i < chip->num_freqs; i++) {
 531                 if (chip->freqs_ok & (1 << i)) {
 532                         runtime->hw.rate_max = chip->freq_table[i];
 533                         break;
 534                 }
 535         }
 536         for (i = chip->num_freqs - 1; i >= 0; i--) {
 537                 if (chip->freqs_ok & (1 << i)) {
 538                         runtime->hw.rate_min = chip->freq_table[i];
 539                         break;
 540                 }
 541         }
 542         runtime->hw.formats = chip->formats_ok;
 543         if (chip->can_capture) {
 544                 if (! chip->can_duplex)
 545                         runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
 546                 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
 547         }
 548         runtime->private_data = rec;
 549         rec->substream = subs;
 550
 551 #if 0 /* FIXME: still under development.. */
 552         snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 553                             snd_pmac_hw_rule_rate, chip, rec->stream, -1);
 554         snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
 555                             snd_pmac_hw_rule_format, chip, rec->stream, -1);
 556 #endif
 557
 558         runtime->hw.periods_max = rec->cmd.size - 1;
 559
 560         if (chip->can_duplex)
 561                 snd_pcm_set_sync(subs);
 562
 563         /* constraints to fix choppy sound */
 564         snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 565         return 0;
 566 }
 567
 568 static int snd_pmac_pcm_close(pmac_t *chip, pmac_stream_t *rec, snd_pcm_substream_t *subs)
 569 {
 570         pmac_stream_t *astr;
 571
 572         snd_pmac_dma_stop(rec);
 573
 574         astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
 575         if (! astr)
 576                 return -EINVAL;
 577
 578         /* reset constraints */
 579         astr->cur_freqs = chip->freqs_ok;
 580         astr->cur_formats = chip->formats_ok;
 581
 582         return 0;
 583 }
 584
 585 static int snd_pmac_playback_open(snd_pcm_substream_t *subs)
 586 {
 587         pmac_t *chip = snd_pcm_substream_chip(subs);
 588
 589         subs->runtime->hw = snd_pmac_playback;
 590         return snd_pmac_pcm_open(chip, &chip->playback, subs);
 591 }
 592
 593 static int snd_pmac_capture_open(snd_pcm_substream_t *subs)
 594 {
 595         pmac_t *chip = snd_pcm_substream_chip(subs);
 596
 597         subs->runtime->hw = snd_pmac_capture;
 598         return snd_pmac_pcm_open(chip, &chip->capture, subs);
 599 }
 600
 601 static int snd_pmac_playback_close(snd_pcm_substream_t *subs)
 602 {
 603         pmac_t *chip = snd_pcm_substream_chip(subs);
 604
 605         return snd_pmac_pcm_close(chip, &chip->playback, subs);
 606 }
 607
 608 static int snd_pmac_capture_close(snd_pcm_substream_t *subs)
 609 {
 610         pmac_t *chip = snd_pcm_substream_chip(subs);
 611
 612         return snd_pmac_pcm_close(chip, &chip->capture, subs);
 613 }
 614
 615 /*
 616  */
 617
 618 static snd_pcm_ops_t snd_pmac_playback_ops = {
 619         .open =         snd_pmac_playback_open,
 620         .close =        snd_pmac_playback_close,
 621         .ioctl =        snd_pcm_lib_ioctl,
 622         .hw_params =    snd_pmac_pcm_hw_params,
 623         .hw_free =      snd_pmac_pcm_hw_free,
 624         .prepare =      snd_pmac_playback_prepare,
 625         .trigger =      snd_pmac_playback_trigger,
 626         .pointer =      snd_pmac_playback_pointer,
 627 };
 628
 629 static snd_pcm_ops_t snd_pmac_capture_ops = {
 630         .open =         snd_pmac_capture_open,
 631         .close =        snd_pmac_capture_close,
 632         .ioctl =        snd_pcm_lib_ioctl,
 633         .hw_params =    snd_pmac_pcm_hw_params,
 634         .hw_free =      snd_pmac_pcm_hw_free,
 635         .prepare =      snd_pmac_capture_prepare,
 636         .trigger =      snd_pmac_capture_trigger,
 637         .pointer =      snd_pmac_capture_pointer,
 638 };
 639
 640 int __init snd_pmac_pcm_new(pmac_t *chip)
 641 {
 642         snd_pcm_t *pcm;
 643         int err;
 644         int num_captures = 1;
 645
 646         if (! chip->can_capture)
 647                 num_captures = 0;
 648         err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm);
 649         if (err < 0)
 650                 return err;
 651
 652         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops);
 653         if (chip->can_capture)
 654                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops);
 655
 656         pcm->private_data = chip;
 657         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 658         strcpy(pcm->name, chip->card->shortname);
 659         chip->pcm = pcm;
 660
 661         chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE;
 662         if (chip->can_byte_swap)
 663                 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE;
 664
 665         chip->playback.cur_formats = chip->formats_ok;
 666         chip->capture.cur_formats = chip->formats_ok;
 667         chip->playback.cur_freqs = chip->freqs_ok;
 668         chip->capture.cur_freqs = chip->freqs_ok;
 669
 670         /* preallocate 64k buffer */
 671         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 672                                               &chip->pdev->dev,
 673                                               64 * 1024, 64 * 1024);
 674
 675         return 0;
 676 }
 677
 678
 679 static void snd_pmac_dbdma_reset(pmac_t *chip)
 680 {
 681         out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
 682         snd_pmac_wait_ack(&chip->playback);
 683         out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
 684         snd_pmac_wait_ack(&chip->capture);
 685 }
 686
 687
 688 /*
 689  * handling beep
 690  */
 691 void snd_pmac_beep_dma_start(pmac_t *chip, int bytes, unsigned long addr, int speed)
 692 {
 693         pmac_stream_t *rec = &chip->playback;
 694
 695         snd_pmac_dma_stop(rec);
 696         st_le16(&chip->extra_dma.cmds->req_count, bytes);
 697         st_le16(&chip->extra_dma.cmds->xfer_status, 0);
 698         st_le32(&chip->extra_dma.cmds->cmd_dep, chip->extra_dma.addr);
 699         st_le32(&chip->extra_dma.cmds->phy_addr, addr);
 700         st_le16(&chip->extra_dma.cmds->command, OUTPUT_MORE + BR_ALWAYS);
 701         out_le32(&chip->awacs->control,
 702                  (in_le32(&chip->awacs->control) & ~0x1f00)
 703                  | (speed << 8));
 704         out_le32(&chip->awacs->byteswap, 0);
 705         snd_pmac_dma_set_command(rec, &chip->extra_dma);
 706         snd_pmac_dma_run(rec, RUN);
 707 }
 708
 709 void snd_pmac_beep_dma_stop(pmac_t *chip)
 710 {
 711         snd_pmac_dma_stop(&chip->playback);
 712         st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
 713         snd_pmac_pcm_set_format(chip); /* reset format */
 714 }
 715
 716
 717 /*
 718  * interrupt handlers
 719  */
 720 static irqreturn_t
 721 snd_pmac_tx_intr(int irq, void *devid, struct pt_regs *regs)
 722 {
 723         pmac_t *chip = devid;
 724         snd_pmac_pcm_update(chip, &chip->playback);
 725         return IRQ_HANDLED;
 726 }
 727
 728
 729 static irqreturn_t
 730 snd_pmac_rx_intr(int irq, void *devid, struct pt_regs *regs)
 731 {
 732         pmac_t *chip = devid;
 733         snd_pmac_pcm_update(chip, &chip->capture);
 734         return IRQ_HANDLED;
 735 }
 736
 737
 738 static irqreturn_t
 739 snd_pmac_ctrl_intr(int irq, void *devid, struct pt_regs *regs)
 740 {
 741         pmac_t *chip = devid;
 742         int ctrl = in_le32(&chip->awacs->control);
 743
 744         /*printk("pmac: control interrupt.. 0x%x\n", ctrl);*/
 745         if (ctrl & MASK_PORTCHG) {
 746                 /* do something when headphone is plugged/unplugged? */
 747                 if (chip->update_automute)
 748                         chip->update_automute(chip, 1);
 749         }
 750         if (ctrl & MASK_CNTLERR) {
 751                 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16;
 752                 if (err && chip->model <= PMAC_SCREAMER)
 753                         snd_printk(KERN_DEBUG "error %x\n", err);
 754         }
 755         /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
 756         out_le32(&chip->awacs->control, ctrl);
 757         return IRQ_HANDLED;
 758 }
 759
 760
 761 /*
 762  * a wrapper to feature call for compatibility
 763  */
 764 static void snd_pmac_sound_feature(pmac_t *chip, int enable)
 765 {
 766         if (ppc_md.feature_call)
 767                 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
 768 }
 769
 770 /*
 771  * release resources
 772  */
 773
 774 static int snd_pmac_free(pmac_t *chip)
 775 {
 776         /* stop sounds */
 777         if (chip->initialized) {
 778                 snd_pmac_dbdma_reset(chip);
 779                 /* disable interrupts from awacs interface */
 780                 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
 781         }
 782
 783         snd_pmac_sound_feature(chip, 0);
 784 #ifdef CONFIG_PM
 785         snd_pmac_unregister_sleep_notifier(chip);
 786 #endif
 787
 788         /* clean up mixer if any */
 789         if (chip->mixer_free)
 790                 chip->mixer_free(chip);
 791
 792         snd_pmac_detach_beep(chip);
 793
 794         /* release resources */
 795         if (chip->irq >= 0)
 796                 free_irq(chip->irq, (void*)chip);
 797         if (chip->tx_irq >= 0)
 798                 free_irq(chip->tx_irq, (void*)chip);
 799         if (chip->rx_irq >= 0)
 800                 free_irq(chip->rx_irq, (void*)chip);
 801         snd_pmac_dbdma_free(chip, &chip->playback.cmd);
 802         snd_pmac_dbdma_free(chip, &chip->capture.cmd);
 803         snd_pmac_dbdma_free(chip, &chip->extra_dma);
 804         if (chip->macio_base)
 805                 iounmap(chip->macio_base);
 806         if (chip->latch_base)
 807                 iounmap(chip->latch_base);
 808         if (chip->awacs)
 809                 iounmap(chip->awacs);
 810         if (chip->playback.dma)
 811                 iounmap(chip->playback.dma);
 812         if (chip->capture.dma)
 813                 iounmap(chip->capture.dma);
 814 #ifndef CONFIG_PPC64
 815         if (chip->node) {
 816                 int i;
 817
 818                 for (i = 0; i < 3; i++) {
 819                         if (chip->of_requested & (1 << i)) {
 820                                 if (chip->is_k2)
 821                                         release_OF_resource(chip->node->parent,
 822                                                             i);
 823                                 else
 824                                         release_OF_resource(chip->node, i);
 825                         }
 826                 }
 827         }
 828 #endif /* CONFIG_PPC64 */
 829         if (chip->pdev)
 830                 pci_dev_put(chip->pdev);
 831         kfree(chip);
 832         return 0;
 833 }
 834
 835
 836 /*
 837  * free the device
 838  */
 839 static int snd_pmac_dev_free(snd_device_t *device)
 840 {
 841         pmac_t *chip = device->device_data;
 842         return snd_pmac_free(chip);
 843 }
 844
 845
 846 /*
 847  * check the machine support byteswap (little-endian)
 848  */
 849
 850 static void __init detect_byte_swap(pmac_t *chip)
 851 {
 852         struct device_node *mio;
 853
 854         /* if seems that Keylargo can't byte-swap  */
 855         for (mio = chip->node->parent; mio; mio = mio->parent) {
 856                 if (strcmp(mio->name, "mac-io") == 0) {
 857                         if (device_is_compatible(mio, "Keylargo"))
 858                                 chip->can_byte_swap = 0;
 859                         break;
 860                 }
 861         }
 862
 863         /* it seems the Pismo & iBook can't byte-swap in hardware. */
 864         if (machine_is_compatible("PowerBook3,1") ||
 865             machine_is_compatible("PowerBook2,1"))
 866                 chip->can_byte_swap = 0 ;
 867
 868         if (machine_is_compatible("PowerBook2,1"))
 869                 chip->can_duplex = 0;
 870 }
 871
 872
 873 /*
 874  * detect a sound chip
 875  */
 876 static int __init snd_pmac_detect(pmac_t *chip)
 877 {
 878         struct device_node *sound = NULL;
 879         unsigned int *prop, l;
 880         struct macio_chip* macio;
 881
 882         u32 layout_id = 0;
 883
 884         if (_machine != _MACH_Pmac)
 885                 return -ENODEV;
 886
 887         chip->subframe = 0;
 888         chip->revision = 0;
 889         chip->freqs_ok = 0xff; /* all ok */
 890         chip->model = PMAC_AWACS;
 891         chip->can_byte_swap = 1;
 892         chip->can_duplex = 1;
 893         chip->can_capture = 1;
 894         chip->num_freqs = ARRAY_SIZE(awacs_freqs);
 895         chip->freq_table = awacs_freqs;
 896
 897         chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */
 898
 899         /* check machine type */
 900         if (machine_is_compatible("AAPL,3400/2400")
 901             || machine_is_compatible("AAPL,3500"))
 902                 chip->is_pbook_3400 = 1;
 903         else if (machine_is_compatible("PowerBook1,1")
 904                  || machine_is_compatible("AAPL,PowerBook1998"))
 905                 chip->is_pbook_G3 = 1;
 906         chip->node = find_devices("awacs");
 907         if (chip->node)
 908                 sound = chip->node;
 909
 910         /*
 911          * powermac G3 models have a node called "davbus"
 912          * with a child called "sound".
 913          */
 914         if (!chip->node)
 915                 chip->node = find_devices("davbus");
 916         /*
 917          * if we didn't find a davbus device, try 'i2s-a' since
 918          * this seems to be what iBooks have
 919          */
 920         if (! chip->node) {
 921                 chip->node = find_devices("i2s-a");
 922                 if (chip->node && chip->node->parent &&
 923                     chip->node->parent->parent) {
 924                         if (device_is_compatible(chip->node->parent->parent,
 925                                                  "K2-Keylargo"))
 926                                 chip->is_k2 = 1;
 927                 }
 928         }
 929         if (! chip->node)
 930                 return -ENODEV;
 931
 932         if (!sound) {
 933                 sound = find_devices("sound");
 934                 while (sound && sound->parent != chip->node)
 935                         sound = sound->next;
 936         }
 937         if (! sound)
 938                 return -ENODEV;
 939         prop = (unsigned int *) get_property(sound, "sub-frame", NULL);
 940         if (prop && *prop < 16)
 941                 chip->subframe = *prop;
 942         prop = (unsigned int *) get_property(sound, "layout-id", NULL);
 943         if (prop)
 944                 layout_id = *prop;
 945         /* This should be verified on older screamers */
 946         if (device_is_compatible(sound, "screamer")) {
 947                 chip->model = PMAC_SCREAMER;
 948                 // chip->can_byte_swap = 0; /* FIXME: check this */
 949         }
 950         if (device_is_compatible(sound, "burgundy")) {
 951                 chip->model = PMAC_BURGUNDY;
 952                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
 953         }
 954         if (device_is_compatible(sound, "daca")) {
 955                 chip->model = PMAC_DACA;
 956                 chip->can_capture = 0;  /* no capture */
 957                 chip->can_duplex = 0;
 958                 // chip->can_byte_swap = 0; /* FIXME: check this */
 959                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
 960         }
 961         if (device_is_compatible(sound, "tumbler")) {
 962                 chip->model = PMAC_TUMBLER;
 963                 chip->can_capture = 0;  /* no capture */
 964                 chip->can_duplex = 0;
 965                 // chip->can_byte_swap = 0; /* FIXME: check this */
 966                 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
 967                 chip->freq_table = tumbler_freqs;
 968                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
 969         }
 970         if (device_is_compatible(sound, "snapper")) {
 971                 chip->model = PMAC_SNAPPER;
 972                 // chip->can_byte_swap = 0; /* FIXME: check this */
 973                 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
 974                 chip->freq_table = tumbler_freqs;
 975                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
 976         }
 977         if (device_is_compatible(sound, "AOAKeylargo") ||
 978             device_is_compatible(sound, "AOAbase") ||
 979             device_is_compatible(sound, "AOAK2")) {
 980                 /* For now, only support very basic TAS3004 based machines with
 981                  * single frequency until proper i2s control is implemented
 982                  */
 983                 switch(layout_id) {
 984                 case 0x48:
 985                 case 0x46:
 986                 case 0x33:
 987                 case 0x29:
 988                 case 0x24:
 989                 case 0x50:
 990                 case 0x5c:
 991                         chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
 992                         chip->model = PMAC_SNAPPER;
 993                         chip->can_byte_swap = 0; /* FIXME: check this */
 994                         chip->control_mask = MASK_IEPC | 0x11;/* disable IEE */
 995                         break;
 996                 case 0x3a:
 997                         chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
 998                         chip->model = PMAC_TOONIE;
 999                         chip->can_byte_swap = 0; /* FIXME: check this */
1000                         chip->control_mask = MASK_IEPC | 0x11;/* disable IEE */
1001                         break;
1002                 }
1003         }
1004         prop = (unsigned int *)get_property(sound, "device-id", NULL);
1005         if (prop)
1006                 chip->device_id = *prop;
1007         chip->has_iic = (find_devices("perch") != NULL);
1008
1009         /* We need the PCI device for DMA allocations, let's use a crude method
1010          * for now ...
1011          */
1012         macio = macio_find(chip->node, macio_unknown);
1013         if (macio == NULL)
1014                 printk(KERN_WARNING "snd-powermac: can't locate macio !\n");
1015         else {
1016                 struct pci_dev *pdev = NULL;
1017
1018                 for_each_pci_dev(pdev) {
1019                         struct device_node *np = pci_device_to_OF_node(pdev);
1020                         if (np && np == macio->of_node) {
1021                                 chip->pdev = pdev;
1022                                 break;
1023                         }
1024                 }
1025         }
1026         if (chip->pdev == NULL)
1027                 printk(KERN_WARNING "snd-powermac: can't locate macio PCI"
1028                        " device !\n");
1029
1030         detect_byte_swap(chip);
1031
1032         /* look for a property saying what sample rates
1033            are available */
1034         prop = (unsigned int *) get_property(sound, "sample-rates", &l);
1035         if (! prop)
1036                 prop = (unsigned int *) get_property(sound,
1037                                                      "output-frame-rates", &l);
1038         if (prop) {
1039                 int i;
1040                 chip->freqs_ok = 0;
1041                 for (l /= sizeof(int); l > 0; --l) {
1042                         unsigned int r = *prop++;
1043                         /* Apple 'Fixed' format */
1044                         if (r >= 0x10000)
1045                                 r >>= 16;
1046                         for (i = 0; i < chip->num_freqs; ++i) {
1047                                 if (r == chip->freq_table[i]) {
1048                                         chip->freqs_ok |= (1 << i);
1049                                         break;
1050                                 }
1051                         }
1052                 }
1053         } else {
1054                 /* assume only 44.1khz */
1055                 chip->freqs_ok = 1;
1056         }
1057
1058         return 0;
1059 }
1060
1061 /*
1062  * exported - boolean info callbacks for ease of programming
1063  */
1064 int snd_pmac_boolean_stereo_info(snd_kcontrol_t *kcontrol,
1065                                  snd_ctl_elem_info_t *uinfo)
1066 {
1067         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1068         uinfo->count = 2;
1069         uinfo->value.integer.min = 0;
1070         uinfo->value.integer.max = 1;
1071         return 0;
1072 }
1073
1074 int snd_pmac_boolean_mono_info(snd_kcontrol_t *kcontrol,
1075                                snd_ctl_elem_info_t *uinfo)
1076 {
1077         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1078         uinfo->count = 1;
1079         uinfo->value.integer.min = 0;
1080         uinfo->value.integer.max = 1;
1081         return 0;
1082 }
1083
1084 #ifdef PMAC_SUPPORT_AUTOMUTE
1085 /*
1086  * auto-mute
1087  */
1088 static int pmac_auto_mute_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1089 {
1090         pmac_t *chip = snd_kcontrol_chip(kcontrol);
1091         ucontrol->value.integer.value[0] = chip->auto_mute;
1092         return 0;
1093 }
1094
1095 static int pmac_auto_mute_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1096 {
1097         pmac_t *chip = snd_kcontrol_chip(kcontrol);
1098         if (ucontrol->value.integer.value[0] != chip->auto_mute) {
1099                 chip->auto_mute = ucontrol->value.integer.value[0];
1100                 if (chip->update_automute)
1101                         chip->update_automute(chip, 1);
1102                 return 1;
1103         }
1104         return 0;
1105 }
1106
1107 static int pmac_hp_detect_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1108 {
1109         pmac_t *chip = snd_kcontrol_chip(kcontrol);
1110         if (chip->detect_headphone)
1111                 ucontrol->value.integer.value[0] = chip->detect_headphone(chip);
1112         else
1113                 ucontrol->value.integer.value[0] = 0;
1114         return 0;
1115 }
1116
1117 static snd_kcontrol_new_t auto_mute_controls[] __initdata = {
1118         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1119           .name = "Auto Mute Switch",
1120           .info = snd_pmac_boolean_mono_info,
1121           .get = pmac_auto_mute_get,
1122           .put = pmac_auto_mute_put,
1123         },
1124         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1125           .name = "Headphone Detection",
1126           .access = SNDRV_CTL_ELEM_ACCESS_READ,
1127           .info = snd_pmac_boolean_mono_info,
1128           .get = pmac_hp_detect_get,
1129         },
1130 };
1131
1132 int __init snd_pmac_add_automute(pmac_t *chip)
1133 {
1134         int err;
1135         chip->auto_mute = 1;
1136         err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
1137         if (err < 0) {
1138                 printk(KERN_ERR "snd-powermac: Failed to add automute control\n");
1139                 return err;
1140         }
1141         chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
1142         return snd_ctl_add(chip->card, chip->hp_detect_ctl);
1143 }
1144 #endif /* PMAC_SUPPORT_AUTOMUTE */
1145
1146 /*
1147  * create and detect a pmac chip record
1148  */
1149 int __init snd_pmac_new(snd_card_t *card, pmac_t **chip_return)
1150 {
1151         pmac_t *chip;
1152         struct device_node *np;
1153         int i, err;
1154         unsigned long ctrl_addr, txdma_addr, rxdma_addr;
1155         static snd_device_ops_t ops = {
1156                 .dev_free =     snd_pmac_dev_free,
1157         };
1158
1159         *chip_return = NULL;
1160
1161         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1162         if (chip == NULL)
1163                 return -ENOMEM;
1164         chip->card = card;
1165
1166         spin_lock_init(&chip->reg_lock);
1167         chip->irq = chip->tx_irq = chip->rx_irq = -1;
1168
1169         chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK;
1170         chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE;
1171
1172         if ((err = snd_pmac_detect(chip)) < 0)
1173                 goto __error;
1174
1175         if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1176             snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1177             snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0) {
1178                 err = -ENOMEM;
1179                 goto __error;
1180         }
1181
1182         np = chip->node;
1183         if (chip->is_k2) {
1184                 if (np->parent->n_addrs < 2 || np->n_intrs < 3) {
1185                         err = -ENODEV;
1186                         goto __error;
1187                 }
1188                 for (i = 0; i < 2; i++) {
1189 #ifndef CONFIG_PPC64
1190                         static char *name[2] = { "- Control", "- DMA" };
1191                         if (! request_OF_resource(np->parent, i, name[i])) {
1192                                 snd_printk(KERN_ERR "pmac: can't request resource %d!\n", i);
1193                                 err = -ENODEV;
1194                                 goto __error;
1195                         }
1196                         chip->of_requested |= (1 << i);
1197 #endif /* CONFIG_PPC64 */
1198                         ctrl_addr = np->parent->addrs[0].address;
1199                         txdma_addr = np->parent->addrs[1].address;
1200                         rxdma_addr = txdma_addr + 0x100;
1201                 }
1202
1203         } else {
1204                 if (np->n_addrs < 3 || np->n_intrs < 3) {
1205                         err = -ENODEV;
1206                         goto __error;
1207                 }
1208
1209                 for (i = 0; i < 3; i++) {
1210 #ifndef CONFIG_PPC64
1211                         static char *name[3] = { "- Control", "- Tx DMA", "- Rx DMA" };
1212                         if (! request_OF_resource(np, i, name[i])) {
1213                                 snd_printk(KERN_ERR "pmac: can't request resource %d!\n", i);
1214                                 err = -ENODEV;
1215                                 goto __error;
1216                         }
1217                         chip->of_requested |= (1 << i);
1218 #endif /* CONFIG_PPC64 */
1219                         ctrl_addr = np->addrs[0].address;
1220                         txdma_addr = np->addrs[1].address;
1221                         rxdma_addr = np->addrs[2].address;
1222                 }
1223         }
1224
1225         chip->awacs = ioremap(ctrl_addr, 0x1000);
1226         chip->playback.dma = ioremap(txdma_addr, 0x100);
1227         chip->capture.dma = ioremap(rxdma_addr, 0x100);
1228         if (chip->model <= PMAC_BURGUNDY) {
1229                 if (request_irq(np->intrs[0].line, snd_pmac_ctrl_intr, 0,
1230                                 "PMac", (void*)chip)) {
1231                         snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[0].line);
1232                         err = -EBUSY;
1233                         goto __error;
1234                 }
1235                 chip->irq = np->intrs[0].line;
1236         }
1237         if (request_irq(np->intrs[1].line, snd_pmac_tx_intr, 0,
1238                         "PMac Output", (void*)chip)) {
1239                 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[1].line);
1240                 err = -EBUSY;
1241                 goto __error;
1242         }
1243         chip->tx_irq = np->intrs[1].line;
1244         if (request_irq(np->intrs[2].line, snd_pmac_rx_intr, 0,
1245                         "PMac Input", (void*)chip)) {
1246                 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[2].line);
1247                 err = -EBUSY;
1248                 goto __error;
1249         }
1250         chip->rx_irq = np->intrs[2].line;
1251
1252         snd_pmac_sound_feature(chip, 1);
1253
1254         /* reset */
1255         if (chip->model == PMAC_AWACS)
1256                 out_le32(&chip->awacs->control, 0x11);
1257
1258         /* Powerbooks have odd ways of enabling inputs such as
1259            an expansion-bay CD or sound from an internal modem
1260            or a PC-card modem. */
1261         if (chip->is_pbook_3400) {
1262                 /* Enable CD and PC-card sound inputs. */
1263                 /* This is done by reading from address
1264                  * f301a000, + 0x10 to enable the expansion-bay
1265                  * CD sound input, + 0x80 to enable the PC-card
1266                  * sound input.  The 0x100 enables the SCSI bus
1267                  * terminator power.
1268                  */
1269                 chip->latch_base = ioremap (0xf301a000, 0x1000);
1270                 in_8(chip->latch_base + 0x190);
1271         } else if (chip->is_pbook_G3) {
1272                 struct device_node* mio;
1273                 for (mio = chip->node->parent; mio; mio = mio->parent) {
1274                         if (strcmp(mio->name, "mac-io") == 0
1275                             && mio->n_addrs > 0) {
1276                                 chip->macio_base = ioremap(mio->addrs[0].address, 0x40);
1277                                 break;
1278                         }
1279                 }
1280                 /* Enable CD sound input. */
1281                 /* The relevant bits for writing to this byte are 0x8f.
1282                  * I haven't found out what the 0x80 bit does.
1283                  * For the 0xf bits, writing 3 or 7 enables the CD
1284                  * input, any other value disables it.  Values
1285                  * 1, 3, 5, 7 enable the microphone.  Values 0, 2,
1286                  * 4, 6, 8 - f enable the input from the modem.
1287                  */
1288                 if (chip->macio_base)
1289                         out_8(chip->macio_base + 0x37, 3);
1290         }
1291
1292         /* Reset dbdma channels */
1293         snd_pmac_dbdma_reset(chip);
1294
1295 #ifdef CONFIG_PM
1296         /* add sleep notifier */
1297         if (! snd_pmac_register_sleep_notifier(chip))
1298                 snd_card_set_pm_callback(chip->card, snd_pmac_suspend, snd_pmac_resume, chip);
1299 #endif
1300
1301         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1302                 goto __error;
1303
1304         *chip_return = chip;
1305         return 0;
1306
1307  __error:
1308         if (chip->pdev)
1309                 pci_dev_put(chip->pdev);
1310         snd_pmac_free(chip);
1311         return err;
1312 }
1313
1314
1315 /*
1316  * sleep notify for powerbook
1317  */
1318
1319 #ifdef CONFIG_PM
1320
1321 /*
1322  * Save state when going to sleep, restore it afterwards.
1323  */
1324
1325 static int snd_pmac_suspend(snd_card_t *card, pm_message_t state)
1326 {
1327         pmac_t *chip = card->pm_private_data;
1328         unsigned long flags;
1329
1330         if (chip->suspend)
1331                 chip->suspend(chip);
1332         snd_pcm_suspend_all(chip->pcm);
1333         spin_lock_irqsave(&chip->reg_lock, flags);
1334         snd_pmac_beep_stop(chip);
1335         spin_unlock_irqrestore(&chip->reg_lock, flags);
1336         if (chip->irq >= 0)
1337                 disable_irq(chip->irq);
1338         if (chip->tx_irq >= 0)
1339                 disable_irq(chip->tx_irq);
1340         if (chip->rx_irq >= 0)
1341                 disable_irq(chip->rx_irq);
1342         snd_pmac_sound_feature(chip, 0);
1343         return 0;
1344 }
1345
1346 static int snd_pmac_resume(snd_card_t *card)
1347 {
1348         pmac_t *chip = card->pm_private_data;
1349
1350         snd_pmac_sound_feature(chip, 1);
1351         if (chip->resume)
1352                 chip->resume(chip);
1353         /* enable CD sound input */
1354         if (chip->macio_base && chip->is_pbook_G3) {
1355                 out_8(chip->macio_base + 0x37, 3);
1356         } else if (chip->is_pbook_3400) {
1357                 in_8(chip->latch_base + 0x190);
1358         }
1359
1360         snd_pmac_pcm_set_format(chip);
1361
1362         if (chip->irq >= 0)
1363                 enable_irq(chip->irq);
1364         if (chip->tx_irq >= 0)
1365                 enable_irq(chip->tx_irq);
1366         if (chip->rx_irq >= 0)
1367                 enable_irq(chip->rx_irq);
1368
1369         return 0;
1370 }
1371
1372 /* the chip is stored statically by snd_pmac_register_sleep_notifier
1373  * because we can't have any private data for notify callback.
1374  */
1375 static pmac_t *sleeping_pmac = NULL;
1376
1377 static int snd_pmac_sleep_notify(struct pmu_sleep_notifier *self, int when)
1378 {
1379         pmac_t *chip;
1380
1381         chip = sleeping_pmac;
1382         if (! chip)
1383                 return 0;
1384
1385         switch (when) {
1386         case PBOOK_SLEEP_NOW:
1387                 snd_pmac_suspend(chip->card, PMSG_SUSPEND);
1388                 break;
1389         case PBOOK_WAKE:
1390                 snd_pmac_resume(chip->card);
1391                 break;
1392         }
1393         return PBOOK_SLEEP_OK;
1394 }
1395
1396 static struct pmu_sleep_notifier snd_pmac_sleep_notifier = {
1397         snd_pmac_sleep_notify, SLEEP_LEVEL_SOUND,
1398 };
1399
1400 static int __init snd_pmac_register_sleep_notifier(pmac_t *chip)
1401 {
1402         /* should be protected here.. */
1403         snd_assert(! sleeping_pmac, return -EBUSY);
1404         sleeping_pmac = chip;
1405         pmu_register_sleep_notifier(&snd_pmac_sleep_notifier);
1406         return 0;
1407 }
1408
1409 static int snd_pmac_unregister_sleep_notifier(pmac_t *chip)
1410 {
1411         /* should be protected here.. */
1412         snd_assert(sleeping_pmac == chip, return -ENODEV);
1413         pmu_unregister_sleep_notifier(&snd_pmac_sleep_notifier);
1414         sleeping_pmac = NULL;
1415         return 0;
1416 }
1417
1418 #endif /* CONFIG_PM */
1419