err.no 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(struct snd_pmac *chip);
  41 static int snd_pmac_unregister_sleep_notifier(struct snd_pmac *chip);
  42 static int snd_pmac_suspend(struct snd_card *card, pm_message_t state);
  43 static int snd_pmac_resume(struct snd_card *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(struct snd_pmac *chip, struct pmac_dbdma *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(struct snd_pmac *chip, struct pmac_dbdma *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(struct snd_pmac *chip, struct pmac_stream *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(struct snd_pcm_substream *subs,
 123                                   struct snd_pcm_hw_params *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(struct snd_pcm_substream *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 struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *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(struct pmac_stream *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(struct snd_pmac *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(struct pmac_stream *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(struct pmac_stream *rec, struct pmac_dbdma *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(struct pmac_stream *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(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs)
 207 {
 208         int i;
 209         volatile struct dbdma_cmd __iomem *cp;
 210         struct snd_pcm_runtime *runtime = subs->runtime;
 211         int rate_index;
 212         long offset;
 213         struct pmac_stream *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(struct snd_pmac *chip, struct pmac_stream *rec,
 271                                 struct snd_pcm_substream *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(struct snd_pmac *chip,
 318                                               struct pmac_stream *rec,
 319                                               struct snd_pcm_substream *subs)
 320 {
 321         int count = 0;
 322
 323 #if 1 /* hmm.. how can we get the current dma pointer?? */
 324         int stat;
 325         volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];
 326         stat = ld_le16(&cp->xfer_status);
 327         if (stat & (ACTIVE|DEAD)) {
 328                 count = in_le16(&cp->res_count);
 329                 if (count)
 330                         count = rec->period_size - count;
 331         }
 332 #endif
 333         count += rec->cur_period * rec->period_size;
 334         /*printk("pointer=%d\n", count);*/
 335         return bytes_to_frames(subs->runtime, count);
 336 }
 337
 338 /*
 339  * playback
 340  */
 341
 342 static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs)
 343 {
 344         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 345         return snd_pmac_pcm_prepare(chip, &chip->playback, subs);
 346 }
 347
 348 static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs,
 349                                      int cmd)
 350 {
 351         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 352         return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd);
 353 }
 354
 355 static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs)
 356 {
 357         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 358         return snd_pmac_pcm_pointer(chip, &chip->playback, subs);
 359 }
 360
 361
 362 /*
 363  * capture
 364  */
 365
 366 static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs)
 367 {
 368         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 369         return snd_pmac_pcm_prepare(chip, &chip->capture, subs);
 370 }
 371
 372 static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs,
 373                                     int cmd)
 374 {
 375         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 376         return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd);
 377 }
 378
 379 static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs)
 380 {
 381         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 382         return snd_pmac_pcm_pointer(chip, &chip->capture, subs);
 383 }
 384
 385
 386 /*
 387  * update playback/capture pointer from interrupts
 388  */
 389 static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec)
 390 {
 391         volatile struct dbdma_cmd __iomem *cp;
 392         int c;
 393         int stat;
 394
 395         spin_lock(&chip->reg_lock);
 396         if (rec->running) {
 397                 cp = &rec->cmd.cmds[rec->cur_period];
 398                 for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */
 399                         stat = ld_le16(&cp->xfer_status);
 400                         if (! (stat & ACTIVE))
 401                                 break;
 402                         /*printk("update frag %d\n", rec->cur_period);*/
 403                         st_le16(&cp->xfer_status, 0);
 404                         st_le16(&cp->req_count, rec->period_size);
 405                         /*st_le16(&cp->res_count, 0);*/
 406                         rec->cur_period++;
 407                         if (rec->cur_period >= rec->nperiods) {
 408                                 rec->cur_period = 0;
 409                                 cp = rec->cmd.cmds;
 410                         } else
 411                                 cp++;
 412                         spin_unlock(&chip->reg_lock);
 413                         snd_pcm_period_elapsed(rec->substream);
 414                         spin_lock(&chip->reg_lock);
 415                 }
 416         }
 417         spin_unlock(&chip->reg_lock);
 418 }
 419
 420
 421 /*
 422  * hw info
 423  */
 424
 425 static struct snd_pcm_hardware snd_pmac_playback =
 426 {
 427         .info =                 (SNDRV_PCM_INFO_INTERLEAVED |
 428                                  SNDRV_PCM_INFO_MMAP |
 429                                  SNDRV_PCM_INFO_MMAP_VALID |
 430                                  SNDRV_PCM_INFO_RESUME),
 431         .formats =              SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
 432         .rates =                SNDRV_PCM_RATE_8000_44100,
 433         .rate_min =             7350,
 434         .rate_max =             44100,
 435         .channels_min =         2,
 436         .channels_max =         2,
 437         .buffer_bytes_max =     131072,
 438         .period_bytes_min =     256,
 439         .period_bytes_max =     16384,
 440         .periods_min =          3,
 441         .periods_max =          PMAC_MAX_FRAGS,
 442 };
 443
 444 static struct snd_pcm_hardware snd_pmac_capture =
 445 {
 446         .info =                 (SNDRV_PCM_INFO_INTERLEAVED |
 447                                  SNDRV_PCM_INFO_MMAP |
 448                                  SNDRV_PCM_INFO_MMAP_VALID |
 449                                  SNDRV_PCM_INFO_RESUME),
 450         .formats =              SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE,
 451         .rates =                SNDRV_PCM_RATE_8000_44100,
 452         .rate_min =             7350,
 453         .rate_max =             44100,
 454         .channels_min =         2,
 455         .channels_max =         2,
 456         .buffer_bytes_max =     131072,
 457         .period_bytes_min =     256,
 458         .period_bytes_max =     16384,
 459         .periods_min =          3,
 460         .periods_max =          PMAC_MAX_FRAGS,
 461 };
 462
 463
 464 #if 0 // NYI
 465 static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params,
 466                                  struct snd_pcm_hw_rule *rule)
 467 {
 468         struct snd_pmac *chip = rule->private;
 469         struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
 470         int i, freq_table[8], num_freqs;
 471
 472         if (! rec)
 473                 return -EINVAL;
 474         num_freqs = 0;
 475         for (i = chip->num_freqs - 1; i >= 0; i--) {
 476                 if (rec->cur_freqs & (1 << i))
 477                         freq_table[num_freqs++] = chip->freq_table[i];
 478         }
 479
 480         return snd_interval_list(hw_param_interval(params, rule->var),
 481                                  num_freqs, freq_table, 0);
 482 }
 483
 484 static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params,
 485                                    struct snd_pcm_hw_rule *rule)
 486 {
 487         struct snd_pmac *chip = rule->private;
 488         struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
 489
 490         if (! rec)
 491                 return -EINVAL;
 492         return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT),
 493                                    rec->cur_formats);
 494 }
 495 #endif // NYI
 496
 497 static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,
 498                              struct snd_pcm_substream *subs)
 499 {
 500         struct snd_pcm_runtime *runtime = subs->runtime;
 501         int i, j, fflags;
 502         static int typical_freqs[] = {
 503                 44100,
 504                 22050,
 505                 11025,
 506                 0,
 507         };
 508         static int typical_freq_flags[] = {
 509                 SNDRV_PCM_RATE_44100,
 510                 SNDRV_PCM_RATE_22050,
 511                 SNDRV_PCM_RATE_11025,
 512                 0,
 513         };
 514
 515         /* look up frequency table and fill bit mask */
 516         runtime->hw.rates = 0;
 517         fflags = chip->freqs_ok;
 518         for (i = 0; typical_freqs[i]; i++) {
 519                 for (j = 0; j < chip->num_freqs; j++) {
 520                         if ((chip->freqs_ok & (1 << j)) &&
 521                             chip->freq_table[j] == typical_freqs[i]) {
 522                                 runtime->hw.rates |= typical_freq_flags[i];
 523                                 fflags &= ~(1 << j);
 524                                 break;
 525                         }
 526                 }
 527         }
 528         if (fflags) /* rest */
 529                 runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
 530
 531         /* check for minimum and maximum rates */
 532         for (i = 0; i < chip->num_freqs; i++) {
 533                 if (chip->freqs_ok & (1 << i)) {
 534                         runtime->hw.rate_max = chip->freq_table[i];
 535                         break;
 536                 }
 537         }
 538         for (i = chip->num_freqs - 1; i >= 0; i--) {
 539                 if (chip->freqs_ok & (1 << i)) {
 540                         runtime->hw.rate_min = chip->freq_table[i];
 541                         break;
 542                 }
 543         }
 544         runtime->hw.formats = chip->formats_ok;
 545         if (chip->can_capture) {
 546                 if (! chip->can_duplex)
 547                         runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX;
 548                 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX;
 549         }
 550         runtime->private_data = rec;
 551         rec->substream = subs;
 552
 553 #if 0 /* FIXME: still under development.. */
 554         snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 555                             snd_pmac_hw_rule_rate, chip, rec->stream, -1);
 556         snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
 557                             snd_pmac_hw_rule_format, chip, rec->stream, -1);
 558 #endif
 559
 560         runtime->hw.periods_max = rec->cmd.size - 1;
 561
 562         if (chip->can_duplex)
 563                 snd_pcm_set_sync(subs);
 564
 565         /* constraints to fix choppy sound */
 566         snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 567         return 0;
 568 }
 569
 570 static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec,
 571                               struct snd_pcm_substream *subs)
 572 {
 573         struct pmac_stream *astr;
 574
 575         snd_pmac_dma_stop(rec);
 576
 577         astr = snd_pmac_get_stream(chip, another_stream(rec->stream));
 578         if (! astr)
 579                 return -EINVAL;
 580
 581         /* reset constraints */
 582         astr->cur_freqs = chip->freqs_ok;
 583         astr->cur_formats = chip->formats_ok;
 584
 585         return 0;
 586 }
 587
 588 static int snd_pmac_playback_open(struct snd_pcm_substream *subs)
 589 {
 590         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 591
 592         subs->runtime->hw = snd_pmac_playback;
 593         return snd_pmac_pcm_open(chip, &chip->playback, subs);
 594 }
 595
 596 static int snd_pmac_capture_open(struct snd_pcm_substream *subs)
 597 {
 598         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 599
 600         subs->runtime->hw = snd_pmac_capture;
 601         return snd_pmac_pcm_open(chip, &chip->capture, subs);
 602 }
 603
 604 static int snd_pmac_playback_close(struct snd_pcm_substream *subs)
 605 {
 606         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 607
 608         return snd_pmac_pcm_close(chip, &chip->playback, subs);
 609 }
 610
 611 static int snd_pmac_capture_close(struct snd_pcm_substream *subs)
 612 {
 613         struct snd_pmac *chip = snd_pcm_substream_chip(subs);
 614
 615         return snd_pmac_pcm_close(chip, &chip->capture, subs);
 616 }
 617
 618 /*
 619  */
 620
 621 static struct snd_pcm_ops snd_pmac_playback_ops = {
 622         .open =         snd_pmac_playback_open,
 623         .close =        snd_pmac_playback_close,
 624         .ioctl =        snd_pcm_lib_ioctl,
 625         .hw_params =    snd_pmac_pcm_hw_params,
 626         .hw_free =      snd_pmac_pcm_hw_free,
 627         .prepare =      snd_pmac_playback_prepare,
 628         .trigger =      snd_pmac_playback_trigger,
 629         .pointer =      snd_pmac_playback_pointer,
 630 };
 631
 632 static struct snd_pcm_ops snd_pmac_capture_ops = {
 633         .open =         snd_pmac_capture_open,
 634         .close =        snd_pmac_capture_close,
 635         .ioctl =        snd_pcm_lib_ioctl,
 636         .hw_params =    snd_pmac_pcm_hw_params,
 637         .hw_free =      snd_pmac_pcm_hw_free,
 638         .prepare =      snd_pmac_capture_prepare,
 639         .trigger =      snd_pmac_capture_trigger,
 640         .pointer =      snd_pmac_capture_pointer,
 641 };
 642
 643 int __init snd_pmac_pcm_new(struct snd_pmac *chip)
 644 {
 645         struct snd_pcm *pcm;
 646         int err;
 647         int num_captures = 1;
 648
 649         if (! chip->can_capture)
 650                 num_captures = 0;
 651         err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm);
 652         if (err < 0)
 653                 return err;
 654
 655         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops);
 656         if (chip->can_capture)
 657                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops);
 658
 659         pcm->private_data = chip;
 660         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 661         strcpy(pcm->name, chip->card->shortname);
 662         chip->pcm = pcm;
 663
 664         chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE;
 665         if (chip->can_byte_swap)
 666                 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE;
 667
 668         chip->playback.cur_formats = chip->formats_ok;
 669         chip->capture.cur_formats = chip->formats_ok;
 670         chip->playback.cur_freqs = chip->freqs_ok;
 671         chip->capture.cur_freqs = chip->freqs_ok;
 672
 673         /* preallocate 64k buffer */
 674         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 675                                               &chip->pdev->dev,
 676                                               64 * 1024, 64 * 1024);
 677
 678         return 0;
 679 }
 680
 681
 682 static void snd_pmac_dbdma_reset(struct snd_pmac *chip)
 683 {
 684         out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
 685         snd_pmac_wait_ack(&chip->playback);
 686         out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
 687         snd_pmac_wait_ack(&chip->capture);
 688 }
 689
 690
 691 /*
 692  * handling beep
 693  */
 694 void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed)
 695 {
 696         struct pmac_stream *rec = &chip->playback;
 697
 698         snd_pmac_dma_stop(rec);
 699         st_le16(&chip->extra_dma.cmds->req_count, bytes);
 700         st_le16(&chip->extra_dma.cmds->xfer_status, 0);
 701         st_le32(&chip->extra_dma.cmds->cmd_dep, chip->extra_dma.addr);
 702         st_le32(&chip->extra_dma.cmds->phy_addr, addr);
 703         st_le16(&chip->extra_dma.cmds->command, OUTPUT_MORE + BR_ALWAYS);
 704         out_le32(&chip->awacs->control,
 705                  (in_le32(&chip->awacs->control) & ~0x1f00)
 706                  | (speed << 8));
 707         out_le32(&chip->awacs->byteswap, 0);
 708         snd_pmac_dma_set_command(rec, &chip->extra_dma);
 709         snd_pmac_dma_run(rec, RUN);
 710 }
 711
 712 void snd_pmac_beep_dma_stop(struct snd_pmac *chip)
 713 {
 714         snd_pmac_dma_stop(&chip->playback);
 715         st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP);
 716         snd_pmac_pcm_set_format(chip); /* reset format */
 717 }
 718
 719
 720 /*
 721  * interrupt handlers
 722  */
 723 static irqreturn_t
 724 snd_pmac_tx_intr(int irq, void *devid, struct pt_regs *regs)
 725 {
 726         struct snd_pmac *chip = devid;
 727         snd_pmac_pcm_update(chip, &chip->playback);
 728         return IRQ_HANDLED;
 729 }
 730
 731
 732 static irqreturn_t
 733 snd_pmac_rx_intr(int irq, void *devid, struct pt_regs *regs)
 734 {
 735         struct snd_pmac *chip = devid;
 736         snd_pmac_pcm_update(chip, &chip->capture);
 737         return IRQ_HANDLED;
 738 }
 739
 740
 741 static irqreturn_t
 742 snd_pmac_ctrl_intr(int irq, void *devid, struct pt_regs *regs)
 743 {
 744         struct snd_pmac *chip = devid;
 745         int ctrl = in_le32(&chip->awacs->control);
 746
 747         /*printk("pmac: control interrupt.. 0x%x\n", ctrl);*/
 748         if (ctrl & MASK_PORTCHG) {
 749                 /* do something when headphone is plugged/unplugged? */
 750                 if (chip->update_automute)
 751                         chip->update_automute(chip, 1);
 752         }
 753         if (ctrl & MASK_CNTLERR) {
 754                 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16;
 755                 if (err && chip->model <= PMAC_SCREAMER)
 756                         snd_printk(KERN_DEBUG "error %x\n", err);
 757         }
 758         /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
 759         out_le32(&chip->awacs->control, ctrl);
 760         return IRQ_HANDLED;
 761 }
 762
 763
 764 /*
 765  * a wrapper to feature call for compatibility
 766  */
 767 static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable)
 768 {
 769         if (ppc_md.feature_call)
 770                 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
 771 }
 772
 773 /*
 774  * release resources
 775  */
 776
 777 static int snd_pmac_free(struct snd_pmac *chip)
 778 {
 779         /* stop sounds */
 780         if (chip->initialized) {
 781                 snd_pmac_dbdma_reset(chip);
 782                 /* disable interrupts from awacs interface */
 783                 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
 784         }
 785
 786         snd_pmac_sound_feature(chip, 0);
 787 #ifdef CONFIG_PM
 788         snd_pmac_unregister_sleep_notifier(chip);
 789 #endif
 790
 791         /* clean up mixer if any */
 792         if (chip->mixer_free)
 793                 chip->mixer_free(chip);
 794
 795         snd_pmac_detach_beep(chip);
 796
 797         /* release resources */
 798         if (chip->irq >= 0)
 799                 free_irq(chip->irq, (void*)chip);
 800         if (chip->tx_irq >= 0)
 801                 free_irq(chip->tx_irq, (void*)chip);
 802         if (chip->rx_irq >= 0)
 803                 free_irq(chip->rx_irq, (void*)chip);
 804         snd_pmac_dbdma_free(chip, &chip->playback.cmd);
 805         snd_pmac_dbdma_free(chip, &chip->capture.cmd);
 806         snd_pmac_dbdma_free(chip, &chip->extra_dma);
 807         if (chip->macio_base)
 808                 iounmap(chip->macio_base);
 809         if (chip->latch_base)
 810                 iounmap(chip->latch_base);
 811         if (chip->awacs)
 812                 iounmap(chip->awacs);
 813         if (chip->playback.dma)
 814                 iounmap(chip->playback.dma);
 815         if (chip->capture.dma)
 816                 iounmap(chip->capture.dma);
 817 #ifndef CONFIG_PPC64
 818         if (chip->node) {
 819                 int i;
 820
 821                 for (i = 0; i < 3; i++) {
 822                         if (chip->of_requested & (1 << i)) {
 823                                 if (chip->is_k2)
 824                                         release_OF_resource(chip->node->parent,
 825                                                             i);
 826                                 else
 827                                         release_OF_resource(chip->node, i);
 828                         }
 829                 }
 830         }
 831 #endif /* CONFIG_PPC64 */
 832         if (chip->pdev)
 833                 pci_dev_put(chip->pdev);
 834         kfree(chip);
 835         return 0;
 836 }
 837
 838
 839 /*
 840  * free the device
 841  */
 842 static int snd_pmac_dev_free(struct snd_device *device)
 843 {
 844         struct snd_pmac *chip = device->device_data;
 845         return snd_pmac_free(chip);
 846 }
 847
 848
 849 /*
 850  * check the machine support byteswap (little-endian)
 851  */
 852
 853 static void __init detect_byte_swap(struct snd_pmac *chip)
 854 {
 855         struct device_node *mio;
 856
 857         /* if seems that Keylargo can't byte-swap  */
 858         for (mio = chip->node->parent; mio; mio = mio->parent) {
 859                 if (strcmp(mio->name, "mac-io") == 0) {
 860                         if (device_is_compatible(mio, "Keylargo"))
 861                                 chip->can_byte_swap = 0;
 862                         break;
 863                 }
 864         }
 865
 866         /* it seems the Pismo & iBook can't byte-swap in hardware. */
 867         if (machine_is_compatible("PowerBook3,1") ||
 868             machine_is_compatible("PowerBook2,1"))
 869                 chip->can_byte_swap = 0 ;
 870
 871         if (machine_is_compatible("PowerBook2,1"))
 872                 chip->can_duplex = 0;
 873 }
 874
 875
 876 /*
 877  * detect a sound chip
 878  */
 879 static int __init snd_pmac_detect(struct snd_pmac *chip)
 880 {
 881         struct device_node *sound = NULL;
 882         unsigned int *prop, l;
 883         struct macio_chip* macio;
 884
 885         u32 layout_id = 0;
 886
 887         if (_machine != _MACH_Pmac)
 888                 return -ENODEV;
 889
 890         chip->subframe = 0;
 891         chip->revision = 0;
 892         chip->freqs_ok = 0xff; /* all ok */
 893         chip->model = PMAC_AWACS;
 894         chip->can_byte_swap = 1;
 895         chip->can_duplex = 1;
 896         chip->can_capture = 1;
 897         chip->num_freqs = ARRAY_SIZE(awacs_freqs);
 898         chip->freq_table = awacs_freqs;
 899
 900         chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */
 901
 902         /* check machine type */
 903         if (machine_is_compatible("AAPL,3400/2400")
 904             || machine_is_compatible("AAPL,3500"))
 905                 chip->is_pbook_3400 = 1;
 906         else if (machine_is_compatible("PowerBook1,1")
 907                  || machine_is_compatible("AAPL,PowerBook1998"))
 908                 chip->is_pbook_G3 = 1;
 909         chip->node = find_devices("awacs");
 910         if (chip->node)
 911                 sound = chip->node;
 912
 913         /*
 914          * powermac G3 models have a node called "davbus"
 915          * with a child called "sound".
 916          */
 917         if (!chip->node)
 918                 chip->node = find_devices("davbus");
 919         /*
 920          * if we didn't find a davbus device, try 'i2s-a' since
 921          * this seems to be what iBooks have
 922          */
 923         if (! chip->node) {
 924                 chip->node = find_devices("i2s-a");
 925                 if (chip->node && chip->node->parent &&
 926                     chip->node->parent->parent) {
 927                         if (device_is_compatible(chip->node->parent->parent,
 928                                                  "K2-Keylargo"))
 929                                 chip->is_k2 = 1;
 930                 }
 931         }
 932         if (! chip->node)
 933                 return -ENODEV;
 934
 935         if (!sound) {
 936                 sound = find_devices("sound");
 937                 while (sound && sound->parent != chip->node)
 938                         sound = sound->next;
 939         }
 940         if (! sound)
 941                 return -ENODEV;
 942         prop = (unsigned int *) get_property(sound, "sub-frame", NULL);
 943         if (prop && *prop < 16)
 944                 chip->subframe = *prop;
 945         prop = (unsigned int *) get_property(sound, "layout-id", NULL);
 946         if (prop)
 947                 layout_id = *prop;
 948         /* This should be verified on older screamers */
 949         if (device_is_compatible(sound, "screamer")) {
 950                 chip->model = PMAC_SCREAMER;
 951                 // chip->can_byte_swap = 0; /* FIXME: check this */
 952         }
 953         if (device_is_compatible(sound, "burgundy")) {
 954                 chip->model = PMAC_BURGUNDY;
 955                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
 956         }
 957         if (device_is_compatible(sound, "daca")) {
 958                 chip->model = PMAC_DACA;
 959                 chip->can_capture = 0;  /* no capture */
 960                 chip->can_duplex = 0;
 961                 // chip->can_byte_swap = 0; /* FIXME: check this */
 962                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
 963         }
 964         if (device_is_compatible(sound, "tumbler")) {
 965                 chip->model = PMAC_TUMBLER;
 966                 chip->can_capture = 0;  /* no capture */
 967                 chip->can_duplex = 0;
 968                 // chip->can_byte_swap = 0; /* FIXME: check this */
 969                 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
 970                 chip->freq_table = tumbler_freqs;
 971                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
 972         }
 973         if (device_is_compatible(sound, "snapper")) {
 974                 chip->model = PMAC_SNAPPER;
 975                 // chip->can_byte_swap = 0; /* FIXME: check this */
 976                 chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
 977                 chip->freq_table = tumbler_freqs;
 978                 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
 979         }
 980         if (device_is_compatible(sound, "AOAKeylargo") ||
 981             device_is_compatible(sound, "AOAbase") ||
 982             device_is_compatible(sound, "AOAK2")) {
 983                 /* For now, only support very basic TAS3004 based machines with
 984                  * single frequency until proper i2s control is implemented
 985                  */
 986                 switch(layout_id) {
 987                 case 0x48:
 988                 case 0x46:
 989                 case 0x33:
 990                 case 0x29:
 991                 case 0x24:
 992                 case 0x50:
 993                 case 0x5c:
 994                         chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
 995                         chip->model = PMAC_SNAPPER;
 996                         chip->can_byte_swap = 0; /* FIXME: check this */
 997                         chip->control_mask = MASK_IEPC | 0x11;/* disable IEE */
 998                         break;
 999                 case 0x3a:
1000                         chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
1001                         chip->model = PMAC_TOONIE;
1002                         chip->can_byte_swap = 0; /* FIXME: check this */
1003                         chip->control_mask = MASK_IEPC | 0x11;/* disable IEE */
1004                         break;
1005                 }
1006         }
1007         prop = (unsigned int *)get_property(sound, "device-id", NULL);
1008         if (prop)
1009                 chip->device_id = *prop;
1010         chip->has_iic = (find_devices("perch") != NULL);
1011
1012         /* We need the PCI device for DMA allocations, let's use a crude method
1013          * for now ...
1014          */
1015         macio = macio_find(chip->node, macio_unknown);
1016         if (macio == NULL)
1017                 printk(KERN_WARNING "snd-powermac: can't locate macio !\n");
1018         else {
1019                 struct pci_dev *pdev = NULL;
1020
1021                 for_each_pci_dev(pdev) {
1022                         struct device_node *np = pci_device_to_OF_node(pdev);
1023                         if (np && np == macio->of_node) {
1024                                 chip->pdev = pdev;
1025                                 break;
1026                         }
1027                 }
1028         }
1029         if (chip->pdev == NULL)
1030                 printk(KERN_WARNING "snd-powermac: can't locate macio PCI"
1031                        " device !\n");
1032
1033         detect_byte_swap(chip);
1034
1035         /* look for a property saying what sample rates
1036            are available */
1037         prop = (unsigned int *) get_property(sound, "sample-rates", &l);
1038         if (! prop)
1039                 prop = (unsigned int *) get_property(sound,
1040                                                      "output-frame-rates", &l);
1041         if (prop) {
1042                 int i;
1043                 chip->freqs_ok = 0;
1044                 for (l /= sizeof(int); l > 0; --l) {
1045                         unsigned int r = *prop++;
1046                         /* Apple 'Fixed' format */
1047                         if (r >= 0x10000)
1048                                 r >>= 16;
1049                         for (i = 0; i < chip->num_freqs; ++i) {
1050                                 if (r == chip->freq_table[i]) {
1051                                         chip->freqs_ok |= (1 << i);
1052                                         break;
1053                                 }
1054                         }
1055                 }
1056         } else {
1057                 /* assume only 44.1khz */
1058                 chip->freqs_ok = 1;
1059         }
1060
1061         return 0;
1062 }
1063
1064 /*
1065  * exported - boolean info callbacks for ease of programming
1066  */
1067 int snd_pmac_boolean_stereo_info(struct snd_kcontrol *kcontrol,
1068                                  struct snd_ctl_elem_info *uinfo)
1069 {
1070         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1071         uinfo->count = 2;
1072         uinfo->value.integer.min = 0;
1073         uinfo->value.integer.max = 1;
1074         return 0;
1075 }
1076
1077 int snd_pmac_boolean_mono_info(struct snd_kcontrol *kcontrol,
1078                                struct snd_ctl_elem_info *uinfo)
1079 {
1080         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1081         uinfo->count = 1;
1082         uinfo->value.integer.min = 0;
1083         uinfo->value.integer.max = 1;
1084         return 0;
1085 }
1086
1087 #ifdef PMAC_SUPPORT_AUTOMUTE
1088 /*
1089  * auto-mute
1090  */
1091 static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol,
1092                               struct snd_ctl_elem_value *ucontrol)
1093 {
1094         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1095         ucontrol->value.integer.value[0] = chip->auto_mute;
1096         return 0;
1097 }
1098
1099 static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol,
1100                               struct snd_ctl_elem_value *ucontrol)
1101 {
1102         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1103         if (ucontrol->value.integer.value[0] != chip->auto_mute) {
1104                 chip->auto_mute = ucontrol->value.integer.value[0];
1105                 if (chip->update_automute)
1106                         chip->update_automute(chip, 1);
1107                 return 1;
1108         }
1109         return 0;
1110 }
1111
1112 static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol,
1113                               struct snd_ctl_elem_value *ucontrol)
1114 {
1115         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
1116         if (chip->detect_headphone)
1117                 ucontrol->value.integer.value[0] = chip->detect_headphone(chip);
1118         else
1119                 ucontrol->value.integer.value[0] = 0;
1120         return 0;
1121 }
1122
1123 static struct snd_kcontrol_new auto_mute_controls[] __initdata = {
1124         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1125           .name = "Auto Mute Switch",
1126           .info = snd_pmac_boolean_mono_info,
1127           .get = pmac_auto_mute_get,
1128           .put = pmac_auto_mute_put,
1129         },
1130         { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1131           .name = "Headphone Detection",
1132           .access = SNDRV_CTL_ELEM_ACCESS_READ,
1133           .info = snd_pmac_boolean_mono_info,
1134           .get = pmac_hp_detect_get,
1135         },
1136 };
1137
1138 int __init snd_pmac_add_automute(struct snd_pmac *chip)
1139 {
1140         int err;
1141         chip->auto_mute = 1;
1142         err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
1143         if (err < 0) {
1144                 printk(KERN_ERR "snd-powermac: Failed to add automute control\n");
1145                 return err;
1146         }
1147         chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
1148         return snd_ctl_add(chip->card, chip->hp_detect_ctl);
1149 }
1150 #endif /* PMAC_SUPPORT_AUTOMUTE */
1151
1152 /*
1153  * create and detect a pmac chip record
1154  */
1155 int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
1156 {
1157         struct snd_pmac *chip;
1158         struct device_node *np;
1159         int i, err;
1160         unsigned long ctrl_addr, txdma_addr, rxdma_addr;
1161         static struct snd_device_ops ops = {
1162                 .dev_free =     snd_pmac_dev_free,
1163         };
1164
1165         *chip_return = NULL;
1166
1167         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1168         if (chip == NULL)
1169                 return -ENOMEM;
1170         chip->card = card;
1171
1172         spin_lock_init(&chip->reg_lock);
1173         chip->irq = chip->tx_irq = chip->rx_irq = -1;
1174
1175         chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK;
1176         chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE;
1177
1178         if ((err = snd_pmac_detect(chip)) < 0)
1179                 goto __error;
1180
1181         if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1182             snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
1183             snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0) {
1184                 err = -ENOMEM;
1185                 goto __error;
1186         }
1187
1188         np = chip->node;
1189         if (chip->is_k2) {
1190                 if (np->parent->n_addrs < 2 || np->n_intrs < 3) {
1191                         err = -ENODEV;
1192                         goto __error;
1193                 }
1194                 for (i = 0; i < 2; i++) {
1195 #ifndef CONFIG_PPC64
1196                         static char *name[2] = { "- Control", "- DMA" };
1197                         if (! request_OF_resource(np->parent, i, name[i])) {
1198                                 snd_printk(KERN_ERR "pmac: can't request resource %d!\n", i);
1199                                 err = -ENODEV;
1200                                 goto __error;
1201                         }
1202                         chip->of_requested |= (1 << i);
1203 #endif /* CONFIG_PPC64 */
1204                         ctrl_addr = np->parent->addrs[0].address;
1205                         txdma_addr = np->parent->addrs[1].address;
1206                         rxdma_addr = txdma_addr + 0x100;
1207                 }
1208
1209         } else {
1210                 if (np->n_addrs < 3 || np->n_intrs < 3) {
1211                         err = -ENODEV;
1212                         goto __error;
1213                 }
1214
1215                 for (i = 0; i < 3; i++) {
1216 #ifndef CONFIG_PPC64
1217                         static char *name[3] = { "- Control", "- Tx DMA", "- Rx DMA" };
1218                         if (! request_OF_resource(np, i, name[i])) {
1219                                 snd_printk(KERN_ERR "pmac: can't request resource %d!\n", i);
1220                                 err = -ENODEV;
1221                                 goto __error;
1222                         }
1223                         chip->of_requested |= (1 << i);
1224 #endif /* CONFIG_PPC64 */
1225                         ctrl_addr = np->addrs[0].address;
1226                         txdma_addr = np->addrs[1].address;
1227                         rxdma_addr = np->addrs[2].address;
1228                 }
1229         }
1230
1231         chip->awacs = ioremap(ctrl_addr, 0x1000);
1232         chip->playback.dma = ioremap(txdma_addr, 0x100);
1233         chip->capture.dma = ioremap(rxdma_addr, 0x100);
1234         if (chip->model <= PMAC_BURGUNDY) {
1235                 if (request_irq(np->intrs[0].line, snd_pmac_ctrl_intr, 0,
1236                                 "PMac", (void*)chip)) {
1237                         snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[0].line);
1238                         err = -EBUSY;
1239                         goto __error;
1240                 }
1241                 chip->irq = np->intrs[0].line;
1242         }
1243         if (request_irq(np->intrs[1].line, snd_pmac_tx_intr, 0,
1244                         "PMac Output", (void*)chip)) {
1245                 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[1].line);
1246                 err = -EBUSY;
1247                 goto __error;
1248         }
1249         chip->tx_irq = np->intrs[1].line;
1250         if (request_irq(np->intrs[2].line, snd_pmac_rx_intr, 0,
1251                         "PMac Input", (void*)chip)) {
1252                 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[2].line);
1253                 err = -EBUSY;
1254                 goto __error;
1255         }
1256         chip->rx_irq = np->intrs[2].line;
1257
1258         snd_pmac_sound_feature(chip, 1);
1259
1260         /* reset */
1261         if (chip->model == PMAC_AWACS)
1262                 out_le32(&chip->awacs->control, 0x11);
1263
1264         /* Powerbooks have odd ways of enabling inputs such as
1265            an expansion-bay CD or sound from an internal modem
1266            or a PC-card modem. */
1267         if (chip->is_pbook_3400) {
1268                 /* Enable CD and PC-card sound inputs. */
1269                 /* This is done by reading from address
1270                  * f301a000, + 0x10 to enable the expansion-bay
1271                  * CD sound input, + 0x80 to enable the PC-card
1272                  * sound input.  The 0x100 enables the SCSI bus
1273                  * terminator power.
1274                  */
1275                 chip->latch_base = ioremap (0xf301a000, 0x1000);
1276                 in_8(chip->latch_base + 0x190);
1277         } else if (chip->is_pbook_G3) {
1278                 struct device_node* mio;
1279                 for (mio = chip->node->parent; mio; mio = mio->parent) {
1280                         if (strcmp(mio->name, "mac-io") == 0
1281                             && mio->n_addrs > 0) {
1282                                 chip->macio_base = ioremap(mio->addrs[0].address, 0x40);
1283                                 break;
1284                         }
1285                 }
1286                 /* Enable CD sound input. */
1287                 /* The relevant bits for writing to this byte are 0x8f.
1288                  * I haven't found out what the 0x80 bit does.
1289                  * For the 0xf bits, writing 3 or 7 enables the CD
1290                  * input, any other value disables it.  Values
1291                  * 1, 3, 5, 7 enable the microphone.  Values 0, 2,
1292                  * 4, 6, 8 - f enable the input from the modem.
1293                  */
1294                 if (chip->macio_base)
1295                         out_8(chip->macio_base + 0x37, 3);
1296         }
1297
1298         /* Reset dbdma channels */
1299         snd_pmac_dbdma_reset(chip);
1300
1301 #ifdef CONFIG_PM
1302         /* add sleep notifier */
1303         if (! snd_pmac_register_sleep_notifier(chip))
1304                 snd_card_set_pm_callback(chip->card, snd_pmac_suspend, snd_pmac_resume, chip);
1305 #endif
1306
1307         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1308                 goto __error;
1309
1310         *chip_return = chip;
1311         return 0;
1312
1313  __error:
1314         if (chip->pdev)
1315                 pci_dev_put(chip->pdev);
1316         snd_pmac_free(chip);
1317         return err;
1318 }
1319
1320
1321 /*
1322  * sleep notify for powerbook
1323  */
1324
1325 #ifdef CONFIG_PM
1326
1327 /*
1328  * Save state when going to sleep, restore it afterwards.
1329  */
1330
1331 static int snd_pmac_suspend(struct snd_card *card, pm_message_t state)
1332 {
1333         struct snd_pmac *chip = card->pm_private_data;
1334         unsigned long flags;
1335
1336         if (chip->suspend)
1337                 chip->suspend(chip);
1338         snd_pcm_suspend_all(chip->pcm);
1339         spin_lock_irqsave(&chip->reg_lock, flags);
1340         snd_pmac_beep_stop(chip);
1341         spin_unlock_irqrestore(&chip->reg_lock, flags);
1342         if (chip->irq >= 0)
1343                 disable_irq(chip->irq);
1344         if (chip->tx_irq >= 0)
1345                 disable_irq(chip->tx_irq);
1346         if (chip->rx_irq >= 0)
1347                 disable_irq(chip->rx_irq);
1348         snd_pmac_sound_feature(chip, 0);
1349         return 0;
1350 }
1351
1352 static int snd_pmac_resume(struct snd_card *card)
1353 {
1354         struct snd_pmac *chip = card->pm_private_data;
1355
1356         snd_pmac_sound_feature(chip, 1);
1357         if (chip->resume)
1358                 chip->resume(chip);
1359         /* enable CD sound input */
1360         if (chip->macio_base && chip->is_pbook_G3) {
1361                 out_8(chip->macio_base + 0x37, 3);
1362         } else if (chip->is_pbook_3400) {
1363                 in_8(chip->latch_base + 0x190);
1364         }
1365
1366         snd_pmac_pcm_set_format(chip);
1367
1368         if (chip->irq >= 0)
1369                 enable_irq(chip->irq);
1370         if (chip->tx_irq >= 0)
1371                 enable_irq(chip->tx_irq);
1372         if (chip->rx_irq >= 0)
1373                 enable_irq(chip->rx_irq);
1374
1375         return 0;
1376 }
1377
1378 /* the chip is stored statically by snd_pmac_register_sleep_notifier
1379  * because we can't have any private data for notify callback.
1380  */
1381 static struct snd_pmac *sleeping_pmac = NULL;
1382
1383 static int snd_pmac_sleep_notify(struct pmu_sleep_notifier *self, int when)
1384 {
1385         struct snd_pmac *chip;
1386
1387         chip = sleeping_pmac;
1388         if (! chip)
1389                 return 0;
1390
1391         switch (when) {
1392         case PBOOK_SLEEP_NOW:
1393                 snd_pmac_suspend(chip->card, PMSG_SUSPEND);
1394                 break;
1395         case PBOOK_WAKE:
1396                 snd_pmac_resume(chip->card);
1397                 break;
1398         }
1399         return PBOOK_SLEEP_OK;
1400 }
1401
1402 static struct pmu_sleep_notifier snd_pmac_sleep_notifier = {
1403         snd_pmac_sleep_notify, SLEEP_LEVEL_SOUND,
1404 };
1405
1406 static int __init snd_pmac_register_sleep_notifier(struct snd_pmac *chip)
1407 {
1408         /* should be protected here.. */
1409         snd_assert(! sleeping_pmac, return -EBUSY);
1410         sleeping_pmac = chip;
1411         pmu_register_sleep_notifier(&snd_pmac_sleep_notifier);
1412         return 0;
1413 }
1414
1415 static int snd_pmac_unregister_sleep_notifier(struct snd_pmac *chip)
1416 {
1417         /* should be protected here.. */
1418         snd_assert(sleeping_pmac == chip, return -ENODEV);
1419         pmu_unregister_sleep_notifier(&snd_pmac_sleep_notifier);
1420         sleeping_pmac = NULL;
1421         return 0;
1422 }
1423
1424 #endif /* CONFIG_PM */
1425