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