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 /* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */ 40 static int awacs_freqs[8] = { 41 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350 42 }; 43 /* fixed frequency table for tumbler */ 44 static int tumbler_freqs[1] = { 45 44100 46 }; 47 48 /* 49 * allocate DBDMA command arrays 50 */ 51 static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size) 52 { 53 unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1); 54 55 rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize, 56 &rec->dma_base, GFP_KERNEL); 57 if (rec->space == NULL) 58 return -ENOMEM; 59 rec->size = size; 60 memset(rec->space, 0, rsize); 61 rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space); 62 rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space); 63 64 return 0; 65 } 66 67 static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec) 68 { 69 if (rec->space) { 70 unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1); 71 72 dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base); 73 } 74 } 75 76 77 /* 78 * pcm stuff 79 */ 80 81 /* 82 * look up frequency table 83 */ 84 85 unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate) 86 { 87 int i, ok, found; 88 89 ok = rec->cur_freqs; 90 if (rate > chip->freq_table[0]) 91 return 0; 92 found = 0; 93 for (i = 0; i < chip->num_freqs; i++, ok >>= 1) { 94 if (! (ok & 1)) continue; 95 found = i; 96 if (rate >= chip->freq_table[i]) 97 break; 98 } 99 return found; 100 } 101 102 /* 103 * check whether another stream is active 104 */ 105 static inline int another_stream(int stream) 106 { 107 return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? 108 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; 109 } 110 111 /* 112 * allocate buffers 113 */ 114 static int snd_pmac_pcm_hw_params(struct snd_pcm_substream *subs, 115 struct snd_pcm_hw_params *hw_params) 116 { 117 return snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw_params)); 118 } 119 120 /* 121 * release buffers 122 */ 123 static int snd_pmac_pcm_hw_free(struct snd_pcm_substream *subs) 124 { 125 snd_pcm_lib_free_pages(subs); 126 return 0; 127 } 128 129 /* 130 * get a stream of the opposite direction 131 */ 132 static struct pmac_stream *snd_pmac_get_stream(struct snd_pmac *chip, int stream) 133 { 134 switch (stream) { 135 case SNDRV_PCM_STREAM_PLAYBACK: 136 return &chip->playback; 137 case SNDRV_PCM_STREAM_CAPTURE: 138 return &chip->capture; 139 default: 140 snd_BUG(); 141 return NULL; 142 } 143 } 144 145 /* 146 * wait while run status is on 147 */ 148 static inline void 149 snd_pmac_wait_ack(struct pmac_stream *rec) 150 { 151 int timeout = 50000; 152 while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0) 153 udelay(1); 154 } 155 156 /* 157 * set the format and rate to the chip. 158 * call the lowlevel function if defined (e.g. for AWACS). 159 */ 160 static void snd_pmac_pcm_set_format(struct snd_pmac *chip) 161 { 162 /* set up frequency and format */ 163 out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8)); 164 out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0); 165 if (chip->set_format) 166 chip->set_format(chip); 167 } 168 169 /* 170 * stop the DMA transfer 171 */ 172 static inline void snd_pmac_dma_stop(struct pmac_stream *rec) 173 { 174 out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16); 175 snd_pmac_wait_ack(rec); 176 } 177 178 /* 179 * set the command pointer address 180 */ 181 static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd) 182 { 183 out_le32(&rec->dma->cmdptr, cmd->addr); 184 } 185 186 /* 187 * start the DMA 188 */ 189 static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status) 190 { 191 out_le32(&rec->dma->control, status | (status << 16)); 192 } 193 194 195 /* 196 * prepare playback/capture stream 197 */ 198 static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs) 199 { 200 int i; 201 volatile struct dbdma_cmd __iomem *cp; 202 struct snd_pcm_runtime *runtime = subs->runtime; 203 int rate_index; 204 long offset; 205 struct pmac_stream *astr; 206 207 rec->dma_size = snd_pcm_lib_buffer_bytes(subs); 208 rec->period_size = snd_pcm_lib_period_bytes(subs); 209 rec->nperiods = rec->dma_size / rec->period_size; 210 rec->cur_period = 0; 211 rate_index = snd_pmac_rate_index(chip, rec, runtime->rate); 212 213 /* set up constraints */ 214 astr = snd_pmac_get_stream(chip, another_stream(rec->stream)); 215 if (! astr) 216 return -EINVAL; 217 astr->cur_freqs = 1 << rate_index; 218 astr->cur_formats = 1 << runtime->format; 219 chip->rate_index = rate_index; 220 chip->format = runtime->format; 221 222 /* We really want to execute a DMA stop command, after the AWACS 223 * is initialized. 224 * For reasons I don't understand, it stops the hissing noise 225 * common to many PowerBook G3 systems and random noise otherwise 226 * captured on iBook2's about every third time. -ReneR 227 */ 228 spin_lock_irq(&chip->reg_lock); 229 snd_pmac_dma_stop(rec); 230 st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP); 231 snd_pmac_dma_set_command(rec, &chip->extra_dma); 232 snd_pmac_dma_run(rec, RUN); 233 spin_unlock_irq(&chip->reg_lock); 234 mdelay(5); 235 spin_lock_irq(&chip->reg_lock); 236 /* continuous DMA memory type doesn't provide the physical address, 237 * so we need to resolve the address here... 238 */ 239 offset = runtime->dma_addr; 240 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) { 241 st_le32(&cp->phy_addr, offset); 242 st_le16(&cp->req_count, rec->period_size); 243 /*st_le16(&cp->res_count, 0);*/ 244 st_le16(&cp->xfer_status, 0); 245 offset += rec->period_size; 246 } 247 /* make loop */ 248 st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS); 249 st_le32(&cp->cmd_dep, rec->cmd.addr); 250 251 snd_pmac_dma_stop(rec); 252 snd_pmac_dma_set_command(rec, &rec->cmd); 253 spin_unlock_irq(&chip->reg_lock); 254 255 return 0; 256 } 257 258 259 /* 260 * PCM trigger/stop 261 */ 262 static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec, 263 struct snd_pcm_substream *subs, int cmd) 264 { 265 volatile struct dbdma_cmd __iomem *cp; 266 int i, command; 267 268 switch (cmd) { 269 case SNDRV_PCM_TRIGGER_START: 270 case SNDRV_PCM_TRIGGER_RESUME: 271 if (rec->running) 272 return -EBUSY; 273 command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ? 274 OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS; 275 spin_lock(&chip->reg_lock); 276 snd_pmac_beep_stop(chip); 277 snd_pmac_pcm_set_format(chip); 278 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) 279 out_le16(&cp->command, command); 280 snd_pmac_dma_set_command(rec, &rec->cmd); 281 (void)in_le32(&rec->dma->status); 282 snd_pmac_dma_run(rec, RUN|WAKE); 283 rec->running = 1; 284 spin_unlock(&chip->reg_lock); 285 break; 286 287 case SNDRV_PCM_TRIGGER_STOP: 288 case SNDRV_PCM_TRIGGER_SUSPEND: 289 spin_lock(&chip->reg_lock); 290 rec->running = 0; 291 /*printk("stopped!!\n");*/ 292 snd_pmac_dma_stop(rec); 293 for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) 294 out_le16(&cp->command, DBDMA_STOP); 295 spin_unlock(&chip->reg_lock); 296 break; 297 298 default: 299 return -EINVAL; 300 } 301 302 return 0; 303 } 304 305 /* 306 * return the current pointer 307 */ 308 inline 309 static snd_pcm_uframes_t snd_pmac_pcm_pointer(struct snd_pmac *chip, 310 struct pmac_stream *rec, 311 struct snd_pcm_substream *subs) 312 { 313 int count = 0; 314 315 #if 1 /* hmm.. how can we get the current dma pointer?? */ 316 int stat; 317 volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period]; 318 stat = ld_le16(&cp->xfer_status); 319 if (stat & (ACTIVE|DEAD)) { 320 count = in_le16(&cp->res_count); 321 if (count) 322 count = rec->period_size - count; 323 } 324 #endif 325 count += rec->cur_period * rec->period_size; 326 /*printk("pointer=%d\n", count);*/ 327 return bytes_to_frames(subs->runtime, count); 328 } 329 330 /* 331 * playback 332 */ 333 334 static int snd_pmac_playback_prepare(struct snd_pcm_substream *subs) 335 { 336 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 337 return snd_pmac_pcm_prepare(chip, &chip->playback, subs); 338 } 339 340 static int snd_pmac_playback_trigger(struct snd_pcm_substream *subs, 341 int cmd) 342 { 343 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 344 return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd); 345 } 346 347 static snd_pcm_uframes_t snd_pmac_playback_pointer(struct snd_pcm_substream *subs) 348 { 349 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 350 return snd_pmac_pcm_pointer(chip, &chip->playback, subs); 351 } 352 353 354 /* 355 * capture 356 */ 357 358 static int snd_pmac_capture_prepare(struct snd_pcm_substream *subs) 359 { 360 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 361 return snd_pmac_pcm_prepare(chip, &chip->capture, subs); 362 } 363 364 static int snd_pmac_capture_trigger(struct snd_pcm_substream *subs, 365 int cmd) 366 { 367 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 368 return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd); 369 } 370 371 static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs) 372 { 373 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 374 return snd_pmac_pcm_pointer(chip, &chip->capture, subs); 375 } 376 377 378 /* 379 * update playback/capture pointer from interrupts 380 */ 381 static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec) 382 { 383 volatile struct dbdma_cmd __iomem *cp; 384 int c; 385 int stat; 386 387 spin_lock(&chip->reg_lock); 388 if (rec->running) { 389 cp = &rec->cmd.cmds[rec->cur_period]; 390 for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */ 391 stat = ld_le16(&cp->xfer_status); 392 if (! (stat & ACTIVE)) 393 break; 394 /*printk("update frag %d\n", rec->cur_period);*/ 395 st_le16(&cp->xfer_status, 0); 396 st_le16(&cp->req_count, rec->period_size); 397 /*st_le16(&cp->res_count, 0);*/ 398 rec->cur_period++; 399 if (rec->cur_period >= rec->nperiods) { 400 rec->cur_period = 0; 401 cp = rec->cmd.cmds; 402 } else 403 cp++; 404 spin_unlock(&chip->reg_lock); 405 snd_pcm_period_elapsed(rec->substream); 406 spin_lock(&chip->reg_lock); 407 } 408 } 409 spin_unlock(&chip->reg_lock); 410 } 411 412 413 /* 414 * hw info 415 */ 416 417 static struct snd_pcm_hardware snd_pmac_playback = 418 { 419 .info = (SNDRV_PCM_INFO_INTERLEAVED | 420 SNDRV_PCM_INFO_MMAP | 421 SNDRV_PCM_INFO_MMAP_VALID | 422 SNDRV_PCM_INFO_RESUME), 423 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE, 424 .rates = SNDRV_PCM_RATE_8000_44100, 425 .rate_min = 7350, 426 .rate_max = 44100, 427 .channels_min = 2, 428 .channels_max = 2, 429 .buffer_bytes_max = 131072, 430 .period_bytes_min = 256, 431 .period_bytes_max = 16384, 432 .periods_min = 3, 433 .periods_max = PMAC_MAX_FRAGS, 434 }; 435 436 static struct snd_pcm_hardware snd_pmac_capture = 437 { 438 .info = (SNDRV_PCM_INFO_INTERLEAVED | 439 SNDRV_PCM_INFO_MMAP | 440 SNDRV_PCM_INFO_MMAP_VALID | 441 SNDRV_PCM_INFO_RESUME), 442 .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE, 443 .rates = SNDRV_PCM_RATE_8000_44100, 444 .rate_min = 7350, 445 .rate_max = 44100, 446 .channels_min = 2, 447 .channels_max = 2, 448 .buffer_bytes_max = 131072, 449 .period_bytes_min = 256, 450 .period_bytes_max = 16384, 451 .periods_min = 3, 452 .periods_max = PMAC_MAX_FRAGS, 453 }; 454 455 456 #if 0 // NYI 457 static int snd_pmac_hw_rule_rate(struct snd_pcm_hw_params *params, 458 struct snd_pcm_hw_rule *rule) 459 { 460 struct snd_pmac *chip = rule->private; 461 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]); 462 int i, freq_table[8], num_freqs; 463 464 if (! rec) 465 return -EINVAL; 466 num_freqs = 0; 467 for (i = chip->num_freqs - 1; i >= 0; i--) { 468 if (rec->cur_freqs & (1 << i)) 469 freq_table[num_freqs++] = chip->freq_table[i]; 470 } 471 472 return snd_interval_list(hw_param_interval(params, rule->var), 473 num_freqs, freq_table, 0); 474 } 475 476 static int snd_pmac_hw_rule_format(struct snd_pcm_hw_params *params, 477 struct snd_pcm_hw_rule *rule) 478 { 479 struct snd_pmac *chip = rule->private; 480 struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]); 481 482 if (! rec) 483 return -EINVAL; 484 return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), 485 rec->cur_formats); 486 } 487 #endif // NYI 488 489 static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec, 490 struct snd_pcm_substream *subs) 491 { 492 struct snd_pcm_runtime *runtime = subs->runtime; 493 int i; 494 495 /* look up frequency table and fill bit mask */ 496 runtime->hw.rates = 0; 497 for (i = 0; i < chip->num_freqs; i++) 498 if (chip->freqs_ok & (1 << i)) 499 runtime->hw.rates |= 500 snd_pcm_rate_to_rate_bit(chip->freq_table[i]); 501 502 /* check for minimum and maximum rates */ 503 for (i = 0; i < chip->num_freqs; i++) { 504 if (chip->freqs_ok & (1 << i)) { 505 runtime->hw.rate_max = chip->freq_table[i]; 506 break; 507 } 508 } 509 for (i = chip->num_freqs - 1; i >= 0; i--) { 510 if (chip->freqs_ok & (1 << i)) { 511 runtime->hw.rate_min = chip->freq_table[i]; 512 break; 513 } 514 } 515 runtime->hw.formats = chip->formats_ok; 516 if (chip->can_capture) { 517 if (! chip->can_duplex) 518 runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX; 519 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; 520 } 521 runtime->private_data = rec; 522 rec->substream = subs; 523 524 #if 0 /* FIXME: still under development.. */ 525 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 526 snd_pmac_hw_rule_rate, chip, rec->stream, -1); 527 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, 528 snd_pmac_hw_rule_format, chip, rec->stream, -1); 529 #endif 530 531 runtime->hw.periods_max = rec->cmd.size - 1; 532 533 /* constraints to fix choppy sound */ 534 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); 535 return 0; 536 } 537 538 static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec, 539 struct snd_pcm_substream *subs) 540 { 541 struct pmac_stream *astr; 542 543 snd_pmac_dma_stop(rec); 544 545 astr = snd_pmac_get_stream(chip, another_stream(rec->stream)); 546 if (! astr) 547 return -EINVAL; 548 549 /* reset constraints */ 550 astr->cur_freqs = chip->freqs_ok; 551 astr->cur_formats = chip->formats_ok; 552 553 return 0; 554 } 555 556 static int snd_pmac_playback_open(struct snd_pcm_substream *subs) 557 { 558 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 559 560 subs->runtime->hw = snd_pmac_playback; 561 return snd_pmac_pcm_open(chip, &chip->playback, subs); 562 } 563 564 static int snd_pmac_capture_open(struct snd_pcm_substream *subs) 565 { 566 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 567 568 subs->runtime->hw = snd_pmac_capture; 569 return snd_pmac_pcm_open(chip, &chip->capture, subs); 570 } 571 572 static int snd_pmac_playback_close(struct snd_pcm_substream *subs) 573 { 574 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 575 576 return snd_pmac_pcm_close(chip, &chip->playback, subs); 577 } 578 579 static int snd_pmac_capture_close(struct snd_pcm_substream *subs) 580 { 581 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 582 583 return snd_pmac_pcm_close(chip, &chip->capture, subs); 584 } 585 586 /* 587 */ 588 589 static struct snd_pcm_ops snd_pmac_playback_ops = { 590 .open = snd_pmac_playback_open, 591 .close = snd_pmac_playback_close, 592 .ioctl = snd_pcm_lib_ioctl, 593 .hw_params = snd_pmac_pcm_hw_params, 594 .hw_free = snd_pmac_pcm_hw_free, 595 .prepare = snd_pmac_playback_prepare, 596 .trigger = snd_pmac_playback_trigger, 597 .pointer = snd_pmac_playback_pointer, 598 }; 599 600 static struct snd_pcm_ops snd_pmac_capture_ops = { 601 .open = snd_pmac_capture_open, 602 .close = snd_pmac_capture_close, 603 .ioctl = snd_pcm_lib_ioctl, 604 .hw_params = snd_pmac_pcm_hw_params, 605 .hw_free = snd_pmac_pcm_hw_free, 606 .prepare = snd_pmac_capture_prepare, 607 .trigger = snd_pmac_capture_trigger, 608 .pointer = snd_pmac_capture_pointer, 609 }; 610 611 int __init snd_pmac_pcm_new(struct snd_pmac *chip) 612 { 613 struct snd_pcm *pcm; 614 int err; 615 int num_captures = 1; 616 617 if (! chip->can_capture) 618 num_captures = 0; 619 err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm); 620 if (err < 0) 621 return err; 622 623 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops); 624 if (chip->can_capture) 625 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops); 626 627 pcm->private_data = chip; 628 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX; 629 strcpy(pcm->name, chip->card->shortname); 630 chip->pcm = pcm; 631 632 chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE; 633 if (chip->can_byte_swap) 634 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE; 635 636 chip->playback.cur_formats = chip->formats_ok; 637 chip->capture.cur_formats = chip->formats_ok; 638 chip->playback.cur_freqs = chip->freqs_ok; 639 chip->capture.cur_freqs = chip->freqs_ok; 640 641 /* preallocate 64k buffer */ 642 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 643 &chip->pdev->dev, 644 64 * 1024, 64 * 1024); 645 646 return 0; 647 } 648 649 650 static void snd_pmac_dbdma_reset(struct snd_pmac *chip) 651 { 652 out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16); 653 snd_pmac_wait_ack(&chip->playback); 654 out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16); 655 snd_pmac_wait_ack(&chip->capture); 656 } 657 658 659 /* 660 * handling beep 661 */ 662 void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed) 663 { 664 struct pmac_stream *rec = &chip->playback; 665 666 snd_pmac_dma_stop(rec); 667 st_le16(&chip->extra_dma.cmds->req_count, bytes); 668 st_le16(&chip->extra_dma.cmds->xfer_status, 0); 669 st_le32(&chip->extra_dma.cmds->cmd_dep, chip->extra_dma.addr); 670 st_le32(&chip->extra_dma.cmds->phy_addr, addr); 671 st_le16(&chip->extra_dma.cmds->command, OUTPUT_MORE + BR_ALWAYS); 672 out_le32(&chip->awacs->control, 673 (in_le32(&chip->awacs->control) & ~0x1f00) 674 | (speed << 8)); 675 out_le32(&chip->awacs->byteswap, 0); 676 snd_pmac_dma_set_command(rec, &chip->extra_dma); 677 snd_pmac_dma_run(rec, RUN); 678 } 679 680 void snd_pmac_beep_dma_stop(struct snd_pmac *chip) 681 { 682 snd_pmac_dma_stop(&chip->playback); 683 st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP); 684 snd_pmac_pcm_set_format(chip); /* reset format */ 685 } 686 687 688 /* 689 * interrupt handlers 690 */ 691 static irqreturn_t 692 snd_pmac_tx_intr(int irq, void *devid) 693 { 694 struct snd_pmac *chip = devid; 695 snd_pmac_pcm_update(chip, &chip->playback); 696 return IRQ_HANDLED; 697 } 698 699 700 static irqreturn_t 701 snd_pmac_rx_intr(int irq, void *devid) 702 { 703 struct snd_pmac *chip = devid; 704 snd_pmac_pcm_update(chip, &chip->capture); 705 return IRQ_HANDLED; 706 } 707 708 709 static irqreturn_t 710 snd_pmac_ctrl_intr(int irq, void *devid) 711 { 712 struct snd_pmac *chip = devid; 713 int ctrl = in_le32(&chip->awacs->control); 714 715 /*printk("pmac: control interrupt.. 0x%x\n", ctrl);*/ 716 if (ctrl & MASK_PORTCHG) { 717 /* do something when headphone is plugged/unplugged? */ 718 if (chip->update_automute) 719 chip->update_automute(chip, 1); 720 } 721 if (ctrl & MASK_CNTLERR) { 722 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16; 723 if (err && chip->model <= PMAC_SCREAMER) 724 snd_printk(KERN_DEBUG "error %x\n", err); 725 } 726 /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */ 727 out_le32(&chip->awacs->control, ctrl); 728 return IRQ_HANDLED; 729 } 730 731 732 /* 733 * a wrapper to feature call for compatibility 734 */ 735 static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable) 736 { 737 if (ppc_md.feature_call) 738 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable); 739 } 740 741 /* 742 * release resources 743 */ 744 745 static int snd_pmac_free(struct snd_pmac *chip) 746 { 747 /* stop sounds */ 748 if (chip->initialized) { 749 snd_pmac_dbdma_reset(chip); 750 /* disable interrupts from awacs interface */ 751 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff); 752 } 753 754 if (chip->node) 755 snd_pmac_sound_feature(chip, 0); 756 757 /* clean up mixer if any */ 758 if (chip->mixer_free) 759 chip->mixer_free(chip); 760 761 snd_pmac_detach_beep(chip); 762 763 /* release resources */ 764 if (chip->irq >= 0) 765 free_irq(chip->irq, (void*)chip); 766 if (chip->tx_irq >= 0) 767 free_irq(chip->tx_irq, (void*)chip); 768 if (chip->rx_irq >= 0) 769 free_irq(chip->rx_irq, (void*)chip); 770 snd_pmac_dbdma_free(chip, &chip->playback.cmd); 771 snd_pmac_dbdma_free(chip, &chip->capture.cmd); 772 snd_pmac_dbdma_free(chip, &chip->extra_dma); 773 if (chip->macio_base) 774 iounmap(chip->macio_base); 775 if (chip->latch_base) 776 iounmap(chip->latch_base); 777 if (chip->awacs) 778 iounmap(chip->awacs); 779 if (chip->playback.dma) 780 iounmap(chip->playback.dma); 781 if (chip->capture.dma) 782 iounmap(chip->capture.dma); 783 784 if (chip->node) { 785 int i; 786 for (i = 0; i < 3; i++) { 787 if (chip->requested & (1 << i)) 788 release_mem_region(chip->rsrc[i].start, 789 chip->rsrc[i].end - 790 chip->rsrc[i].start + 1); 791 } 792 } 793 794 if (chip->pdev) 795 pci_dev_put(chip->pdev); 796 of_node_put(chip->node); 797 kfree(chip); 798 return 0; 799 } 800 801 802 /* 803 * free the device 804 */ 805 static int snd_pmac_dev_free(struct snd_device *device) 806 { 807 struct snd_pmac *chip = device->device_data; 808 return snd_pmac_free(chip); 809 } 810 811 812 /* 813 * check the machine support byteswap (little-endian) 814 */ 815 816 static void __init detect_byte_swap(struct snd_pmac *chip) 817 { 818 struct device_node *mio; 819 820 /* if seems that Keylargo can't byte-swap */ 821 for (mio = chip->node->parent; mio; mio = mio->parent) { 822 if (strcmp(mio->name, "mac-io") == 0) { 823 if (of_device_is_compatible(mio, "Keylargo")) 824 chip->can_byte_swap = 0; 825 break; 826 } 827 } 828 829 /* it seems the Pismo & iBook can't byte-swap in hardware. */ 830 if (machine_is_compatible("PowerBook3,1") || 831 machine_is_compatible("PowerBook2,1")) 832 chip->can_byte_swap = 0 ; 833 834 if (machine_is_compatible("PowerBook2,1")) 835 chip->can_duplex = 0; 836 } 837 838 839 /* 840 * detect a sound chip 841 */ 842 static int __init snd_pmac_detect(struct snd_pmac *chip) 843 { 844 struct device_node *sound; 845 struct device_node *dn; 846 const unsigned int *prop; 847 unsigned int l; 848 struct macio_chip* macio; 849 850 if (!machine_is(powermac)) 851 return -ENODEV; 852 853 chip->subframe = 0; 854 chip->revision = 0; 855 chip->freqs_ok = 0xff; /* all ok */ 856 chip->model = PMAC_AWACS; 857 chip->can_byte_swap = 1; 858 chip->can_duplex = 1; 859 chip->can_capture = 1; 860 chip->num_freqs = ARRAY_SIZE(awacs_freqs); 861 chip->freq_table = awacs_freqs; 862 chip->pdev = NULL; 863 864 chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */ 865 866 /* check machine type */ 867 if (machine_is_compatible("AAPL,3400/2400") 868 || machine_is_compatible("AAPL,3500")) 869 chip->is_pbook_3400 = 1; 870 else if (machine_is_compatible("PowerBook1,1") 871 || machine_is_compatible("AAPL,PowerBook1998")) 872 chip->is_pbook_G3 = 1; 873 chip->node = of_find_node_by_name(NULL, "awacs"); 874 sound = of_node_get(chip->node); 875 876 /* 877 * powermac G3 models have a node called "davbus" 878 * with a child called "sound". 879 */ 880 if (!chip->node) 881 chip->node = of_find_node_by_name(NULL, "davbus"); 882 /* 883 * if we didn't find a davbus device, try 'i2s-a' since 884 * this seems to be what iBooks have 885 */ 886 if (! chip->node) { 887 chip->node = of_find_node_by_name(NULL, "i2s-a"); 888 if (chip->node && chip->node->parent && 889 chip->node->parent->parent) { 890 if (of_device_is_compatible(chip->node->parent->parent, 891 "K2-Keylargo")) 892 chip->is_k2 = 1; 893 } 894 } 895 if (! chip->node) 896 return -ENODEV; 897 898 if (!sound) { 899 sound = of_find_node_by_name(NULL, "sound"); 900 while (sound && sound->parent != chip->node) 901 sound = of_find_node_by_name(sound, "sound"); 902 } 903 if (! sound) { 904 of_node_put(chip->node); 905 chip->node = NULL; 906 return -ENODEV; 907 } 908 prop = of_get_property(sound, "sub-frame", NULL); 909 if (prop && *prop < 16) 910 chip->subframe = *prop; 911 prop = of_get_property(sound, "layout-id", NULL); 912 if (prop) { 913 /* partly deprecate snd-powermac, for those machines 914 * that have a layout-id property for now */ 915 printk(KERN_INFO "snd-powermac no longer handles any " 916 "machines with a layout-id property " 917 "in the device-tree, use snd-aoa.\n"); 918 of_node_put(sound); 919 of_node_put(chip->node); 920 chip->node = NULL; 921 return -ENODEV; 922 } 923 /* This should be verified on older screamers */ 924 if (of_device_is_compatible(sound, "screamer")) { 925 chip->model = PMAC_SCREAMER; 926 // chip->can_byte_swap = 0; /* FIXME: check this */ 927 } 928 if (of_device_is_compatible(sound, "burgundy")) { 929 chip->model = PMAC_BURGUNDY; 930 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ 931 } 932 if (of_device_is_compatible(sound, "daca")) { 933 chip->model = PMAC_DACA; 934 chip->can_capture = 0; /* no capture */ 935 chip->can_duplex = 0; 936 // chip->can_byte_swap = 0; /* FIXME: check this */ 937 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ 938 } 939 if (of_device_is_compatible(sound, "tumbler")) { 940 chip->model = PMAC_TUMBLER; 941 chip->can_capture = 0; /* no capture */ 942 chip->can_duplex = 0; 943 // chip->can_byte_swap = 0; /* FIXME: check this */ 944 chip->num_freqs = ARRAY_SIZE(tumbler_freqs); 945 chip->freq_table = tumbler_freqs; 946 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ 947 } 948 if (of_device_is_compatible(sound, "snapper")) { 949 chip->model = PMAC_SNAPPER; 950 // chip->can_byte_swap = 0; /* FIXME: check this */ 951 chip->num_freqs = ARRAY_SIZE(tumbler_freqs); 952 chip->freq_table = tumbler_freqs; 953 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ 954 } 955 prop = of_get_property(sound, "device-id", NULL); 956 if (prop) 957 chip->device_id = *prop; 958 dn = of_find_node_by_name(NULL, "perch"); 959 chip->has_iic = (dn != NULL); 960 of_node_put(dn); 961 962 /* We need the PCI device for DMA allocations, let's use a crude method 963 * for now ... 964 */ 965 macio = macio_find(chip->node, macio_unknown); 966 if (macio == NULL) 967 printk(KERN_WARNING "snd-powermac: can't locate macio !\n"); 968 else { 969 struct pci_dev *pdev = NULL; 970 971 for_each_pci_dev(pdev) { 972 struct device_node *np = pci_device_to_OF_node(pdev); 973 if (np && np == macio->of_node) { 974 chip->pdev = pdev; 975 break; 976 } 977 } 978 } 979 if (chip->pdev == NULL) 980 printk(KERN_WARNING "snd-powermac: can't locate macio PCI" 981 " device !\n"); 982 983 detect_byte_swap(chip); 984 985 /* look for a property saying what sample rates 986 are available */ 987 prop = of_get_property(sound, "sample-rates", &l); 988 if (! prop) 989 prop = of_get_property(sound, "output-frame-rates", &l); 990 if (prop) { 991 int i; 992 chip->freqs_ok = 0; 993 for (l /= sizeof(int); l > 0; --l) { 994 unsigned int r = *prop++; 995 /* Apple 'Fixed' format */ 996 if (r >= 0x10000) 997 r >>= 16; 998 for (i = 0; i < chip->num_freqs; ++i) { 999 if (r == chip->freq_table[i]) { 1000 chip->freqs_ok |= (1 << i); 1001 break; 1002 } 1003 } 1004 } 1005 } else { 1006 /* assume only 44.1khz */ 1007 chip->freqs_ok = 1; 1008 } 1009 1010 of_node_put(sound); 1011 return 0; 1012 } 1013 1014 #ifdef PMAC_SUPPORT_AUTOMUTE 1015 /* 1016 * auto-mute 1017 */ 1018 static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol, 1019 struct snd_ctl_elem_value *ucontrol) 1020 { 1021 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); 1022 ucontrol->value.integer.value[0] = chip->auto_mute; 1023 return 0; 1024 } 1025 1026 static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol, 1027 struct snd_ctl_elem_value *ucontrol) 1028 { 1029 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); 1030 if (ucontrol->value.integer.value[0] != chip->auto_mute) { 1031 chip->auto_mute = ucontrol->value.integer.value[0]; 1032 if (chip->update_automute) 1033 chip->update_automute(chip, 1); 1034 return 1; 1035 } 1036 return 0; 1037 } 1038 1039 static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol, 1040 struct snd_ctl_elem_value *ucontrol) 1041 { 1042 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); 1043 if (chip->detect_headphone) 1044 ucontrol->value.integer.value[0] = chip->detect_headphone(chip); 1045 else 1046 ucontrol->value.integer.value[0] = 0; 1047 return 0; 1048 } 1049 1050 static struct snd_kcontrol_new auto_mute_controls[] __initdata = { 1051 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1052 .name = "Auto Mute Switch", 1053 .info = snd_pmac_boolean_mono_info, 1054 .get = pmac_auto_mute_get, 1055 .put = pmac_auto_mute_put, 1056 }, 1057 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1058 .name = "Headphone Detection", 1059 .access = SNDRV_CTL_ELEM_ACCESS_READ, 1060 .info = snd_pmac_boolean_mono_info, 1061 .get = pmac_hp_detect_get, 1062 }, 1063 }; 1064 1065 int __init snd_pmac_add_automute(struct snd_pmac *chip) 1066 { 1067 int err; 1068 chip->auto_mute = 1; 1069 err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip)); 1070 if (err < 0) { 1071 printk(KERN_ERR "snd-powermac: Failed to add automute control\n"); 1072 return err; 1073 } 1074 chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip); 1075 return snd_ctl_add(chip->card, chip->hp_detect_ctl); 1076 } 1077 #endif /* PMAC_SUPPORT_AUTOMUTE */ 1078 1079 /* 1080 * create and detect a pmac chip record 1081 */ 1082 int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return) 1083 { 1084 struct snd_pmac *chip; 1085 struct device_node *np; 1086 int i, err; 1087 unsigned int irq; 1088 unsigned long ctrl_addr, txdma_addr, rxdma_addr; 1089 static struct snd_device_ops ops = { 1090 .dev_free = snd_pmac_dev_free, 1091 }; 1092 1093 *chip_return = NULL; 1094 1095 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 1096 if (chip == NULL) 1097 return -ENOMEM; 1098 chip->card = card; 1099 1100 spin_lock_init(&chip->reg_lock); 1101 chip->irq = chip->tx_irq = chip->rx_irq = -1; 1102 1103 chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK; 1104 chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE; 1105 1106 if ((err = snd_pmac_detect(chip)) < 0) 1107 goto __error; 1108 1109 if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 || 1110 snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 || 1111 snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0) { 1112 err = -ENOMEM; 1113 goto __error; 1114 } 1115 1116 np = chip->node; 1117 chip->requested = 0; 1118 if (chip->is_k2) { 1119 static char *rnames[] = { 1120 "Sound Control", "Sound DMA" }; 1121 for (i = 0; i < 2; i ++) { 1122 if (of_address_to_resource(np->parent, i, 1123 &chip->rsrc[i])) { 1124 printk(KERN_ERR "snd: can't translate rsrc " 1125 " %d (%s)\n", i, rnames[i]); 1126 err = -ENODEV; 1127 goto __error; 1128 } 1129 if (request_mem_region(chip->rsrc[i].start, 1130 chip->rsrc[i].end - 1131 chip->rsrc[i].start + 1, 1132 rnames[i]) == NULL) { 1133 printk(KERN_ERR "snd: can't request rsrc " 1134 " %d (%s: 0x%016llx:%016llx)\n", 1135 i, rnames[i], 1136 (unsigned long long)chip->rsrc[i].start, 1137 (unsigned long long)chip->rsrc[i].end); 1138 err = -ENODEV; 1139 goto __error; 1140 } 1141 chip->requested |= (1 << i); 1142 } 1143 ctrl_addr = chip->rsrc[0].start; 1144 txdma_addr = chip->rsrc[1].start; 1145 rxdma_addr = txdma_addr + 0x100; 1146 } else { 1147 static char *rnames[] = { 1148 "Sound Control", "Sound Tx DMA", "Sound Rx DMA" }; 1149 for (i = 0; i < 3; i ++) { 1150 if (of_address_to_resource(np, i, 1151 &chip->rsrc[i])) { 1152 printk(KERN_ERR "snd: can't translate rsrc " 1153 " %d (%s)\n", i, rnames[i]); 1154 err = -ENODEV; 1155 goto __error; 1156 } 1157 if (request_mem_region(chip->rsrc[i].start, 1158 chip->rsrc[i].end - 1159 chip->rsrc[i].start + 1, 1160 rnames[i]) == NULL) { 1161 printk(KERN_ERR "snd: can't request rsrc " 1162 " %d (%s: 0x%016llx:%016llx)\n", 1163 i, rnames[i], 1164 (unsigned long long)chip->rsrc[i].start, 1165 (unsigned long long)chip->rsrc[i].end); 1166 err = -ENODEV; 1167 goto __error; 1168 } 1169 chip->requested |= (1 << i); 1170 } 1171 ctrl_addr = chip->rsrc[0].start; 1172 txdma_addr = chip->rsrc[1].start; 1173 rxdma_addr = chip->rsrc[2].start; 1174 } 1175 1176 chip->awacs = ioremap(ctrl_addr, 0x1000); 1177 chip->playback.dma = ioremap(txdma_addr, 0x100); 1178 chip->capture.dma = ioremap(rxdma_addr, 0x100); 1179 if (chip->model <= PMAC_BURGUNDY) { 1180 irq = irq_of_parse_and_map(np, 0); 1181 if (request_irq(irq, snd_pmac_ctrl_intr, 0, 1182 "PMac", (void*)chip)) { 1183 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", 1184 irq); 1185 err = -EBUSY; 1186 goto __error; 1187 } 1188 chip->irq = irq; 1189 } 1190 irq = irq_of_parse_and_map(np, 1); 1191 if (request_irq(irq, snd_pmac_tx_intr, 0, "PMac Output", (void*)chip)){ 1192 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq); 1193 err = -EBUSY; 1194 goto __error; 1195 } 1196 chip->tx_irq = irq; 1197 irq = irq_of_parse_and_map(np, 2); 1198 if (request_irq(irq, snd_pmac_rx_intr, 0, "PMac Input", (void*)chip)) { 1199 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", irq); 1200 err = -EBUSY; 1201 goto __error; 1202 } 1203 chip->rx_irq = irq; 1204 1205 snd_pmac_sound_feature(chip, 1); 1206 1207 /* reset */ 1208 if (chip->model == PMAC_AWACS) 1209 out_le32(&chip->awacs->control, 0x11); 1210 1211 /* Powerbooks have odd ways of enabling inputs such as 1212 an expansion-bay CD or sound from an internal modem 1213 or a PC-card modem. */ 1214 if (chip->is_pbook_3400) { 1215 /* Enable CD and PC-card sound inputs. */ 1216 /* This is done by reading from address 1217 * f301a000, + 0x10 to enable the expansion-bay 1218 * CD sound input, + 0x80 to enable the PC-card 1219 * sound input. The 0x100 enables the SCSI bus 1220 * terminator power. 1221 */ 1222 chip->latch_base = ioremap (0xf301a000, 0x1000); 1223 in_8(chip->latch_base + 0x190); 1224 } else if (chip->is_pbook_G3) { 1225 struct device_node* mio; 1226 for (mio = chip->node->parent; mio; mio = mio->parent) { 1227 if (strcmp(mio->name, "mac-io") == 0) { 1228 struct resource r; 1229 if (of_address_to_resource(mio, 0, &r) == 0) 1230 chip->macio_base = 1231 ioremap(r.start, 0x40); 1232 break; 1233 } 1234 } 1235 /* Enable CD sound input. */ 1236 /* The relevant bits for writing to this byte are 0x8f. 1237 * I haven't found out what the 0x80 bit does. 1238 * For the 0xf bits, writing 3 or 7 enables the CD 1239 * input, any other value disables it. Values 1240 * 1, 3, 5, 7 enable the microphone. Values 0, 2, 1241 * 4, 6, 8 - f enable the input from the modem. 1242 */ 1243 if (chip->macio_base) 1244 out_8(chip->macio_base + 0x37, 3); 1245 } 1246 1247 /* Reset dbdma channels */ 1248 snd_pmac_dbdma_reset(chip); 1249 1250 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) 1251 goto __error; 1252 1253 *chip_return = chip; 1254 return 0; 1255 1256 __error: 1257 snd_pmac_free(chip); 1258 return err; 1259 } 1260 1261 1262 /* 1263 * sleep notify for powerbook 1264 */ 1265 1266 #ifdef CONFIG_PM 1267 1268 /* 1269 * Save state when going to sleep, restore it afterwards. 1270 */ 1271 1272 void snd_pmac_suspend(struct snd_pmac *chip) 1273 { 1274 unsigned long flags; 1275 1276 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); 1277 if (chip->suspend) 1278 chip->suspend(chip); 1279 snd_pcm_suspend_all(chip->pcm); 1280 spin_lock_irqsave(&chip->reg_lock, flags); 1281 snd_pmac_beep_stop(chip); 1282 spin_unlock_irqrestore(&chip->reg_lock, flags); 1283 if (chip->irq >= 0) 1284 disable_irq(chip->irq); 1285 if (chip->tx_irq >= 0) 1286 disable_irq(chip->tx_irq); 1287 if (chip->rx_irq >= 0) 1288 disable_irq(chip->rx_irq); 1289 snd_pmac_sound_feature(chip, 0); 1290 } 1291 1292 void snd_pmac_resume(struct snd_pmac *chip) 1293 { 1294 snd_pmac_sound_feature(chip, 1); 1295 if (chip->resume) 1296 chip->resume(chip); 1297 /* enable CD sound input */ 1298 if (chip->macio_base && chip->is_pbook_G3) 1299 out_8(chip->macio_base + 0x37, 3); 1300 else if (chip->is_pbook_3400) 1301 in_8(chip->latch_base + 0x190); 1302 1303 snd_pmac_pcm_set_format(chip); 1304 1305 if (chip->irq >= 0) 1306 enable_irq(chip->irq); 1307 if (chip->tx_irq >= 0) 1308 enable_irq(chip->tx_irq); 1309 if (chip->rx_irq >= 0) 1310 enable_irq(chip->rx_irq); 1311 1312 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); 1313 } 1314 1315 #endif /* CONFIG_PM */ 1316 1317