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, j, fflags; 494 static int typical_freqs[] = { 495 44100, 496 22050, 497 11025, 498 0, 499 }; 500 static int typical_freq_flags[] = { 501 SNDRV_PCM_RATE_44100, 502 SNDRV_PCM_RATE_22050, 503 SNDRV_PCM_RATE_11025, 504 0, 505 }; 506 507 /* look up frequency table and fill bit mask */ 508 runtime->hw.rates = 0; 509 fflags = chip->freqs_ok; 510 for (i = 0; typical_freqs[i]; i++) { 511 for (j = 0; j < chip->num_freqs; j++) { 512 if ((chip->freqs_ok & (1 << j)) && 513 chip->freq_table[j] == typical_freqs[i]) { 514 runtime->hw.rates |= typical_freq_flags[i]; 515 fflags &= ~(1 << j); 516 break; 517 } 518 } 519 } 520 if (fflags) /* rest */ 521 runtime->hw.rates |= SNDRV_PCM_RATE_KNOT; 522 523 /* check for minimum and maximum rates */ 524 for (i = 0; i < chip->num_freqs; i++) { 525 if (chip->freqs_ok & (1 << i)) { 526 runtime->hw.rate_max = chip->freq_table[i]; 527 break; 528 } 529 } 530 for (i = chip->num_freqs - 1; i >= 0; i--) { 531 if (chip->freqs_ok & (1 << i)) { 532 runtime->hw.rate_min = chip->freq_table[i]; 533 break; 534 } 535 } 536 runtime->hw.formats = chip->formats_ok; 537 if (chip->can_capture) { 538 if (! chip->can_duplex) 539 runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX; 540 runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; 541 } 542 runtime->private_data = rec; 543 rec->substream = subs; 544 545 #if 0 /* FIXME: still under development.. */ 546 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 547 snd_pmac_hw_rule_rate, chip, rec->stream, -1); 548 snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, 549 snd_pmac_hw_rule_format, chip, rec->stream, -1); 550 #endif 551 552 runtime->hw.periods_max = rec->cmd.size - 1; 553 554 if (chip->can_duplex) 555 snd_pcm_set_sync(subs); 556 557 /* constraints to fix choppy sound */ 558 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); 559 return 0; 560 } 561 562 static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec, 563 struct snd_pcm_substream *subs) 564 { 565 struct pmac_stream *astr; 566 567 snd_pmac_dma_stop(rec); 568 569 astr = snd_pmac_get_stream(chip, another_stream(rec->stream)); 570 if (! astr) 571 return -EINVAL; 572 573 /* reset constraints */ 574 astr->cur_freqs = chip->freqs_ok; 575 astr->cur_formats = chip->formats_ok; 576 577 return 0; 578 } 579 580 static int snd_pmac_playback_open(struct snd_pcm_substream *subs) 581 { 582 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 583 584 subs->runtime->hw = snd_pmac_playback; 585 return snd_pmac_pcm_open(chip, &chip->playback, subs); 586 } 587 588 static int snd_pmac_capture_open(struct snd_pcm_substream *subs) 589 { 590 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 591 592 subs->runtime->hw = snd_pmac_capture; 593 return snd_pmac_pcm_open(chip, &chip->capture, subs); 594 } 595 596 static int snd_pmac_playback_close(struct snd_pcm_substream *subs) 597 { 598 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 599 600 return snd_pmac_pcm_close(chip, &chip->playback, subs); 601 } 602 603 static int snd_pmac_capture_close(struct snd_pcm_substream *subs) 604 { 605 struct snd_pmac *chip = snd_pcm_substream_chip(subs); 606 607 return snd_pmac_pcm_close(chip, &chip->capture, subs); 608 } 609 610 /* 611 */ 612 613 static struct snd_pcm_ops snd_pmac_playback_ops = { 614 .open = snd_pmac_playback_open, 615 .close = snd_pmac_playback_close, 616 .ioctl = snd_pcm_lib_ioctl, 617 .hw_params = snd_pmac_pcm_hw_params, 618 .hw_free = snd_pmac_pcm_hw_free, 619 .prepare = snd_pmac_playback_prepare, 620 .trigger = snd_pmac_playback_trigger, 621 .pointer = snd_pmac_playback_pointer, 622 }; 623 624 static struct snd_pcm_ops snd_pmac_capture_ops = { 625 .open = snd_pmac_capture_open, 626 .close = snd_pmac_capture_close, 627 .ioctl = snd_pcm_lib_ioctl, 628 .hw_params = snd_pmac_pcm_hw_params, 629 .hw_free = snd_pmac_pcm_hw_free, 630 .prepare = snd_pmac_capture_prepare, 631 .trigger = snd_pmac_capture_trigger, 632 .pointer = snd_pmac_capture_pointer, 633 }; 634 635 int __init snd_pmac_pcm_new(struct snd_pmac *chip) 636 { 637 struct snd_pcm *pcm; 638 int err; 639 int num_captures = 1; 640 641 if (! chip->can_capture) 642 num_captures = 0; 643 err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm); 644 if (err < 0) 645 return err; 646 647 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops); 648 if (chip->can_capture) 649 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops); 650 651 pcm->private_data = chip; 652 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX; 653 strcpy(pcm->name, chip->card->shortname); 654 chip->pcm = pcm; 655 656 chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE; 657 if (chip->can_byte_swap) 658 chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE; 659 660 chip->playback.cur_formats = chip->formats_ok; 661 chip->capture.cur_formats = chip->formats_ok; 662 chip->playback.cur_freqs = chip->freqs_ok; 663 chip->capture.cur_freqs = chip->freqs_ok; 664 665 /* preallocate 64k buffer */ 666 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 667 &chip->pdev->dev, 668 64 * 1024, 64 * 1024); 669 670 return 0; 671 } 672 673 674 static void snd_pmac_dbdma_reset(struct snd_pmac *chip) 675 { 676 out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16); 677 snd_pmac_wait_ack(&chip->playback); 678 out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16); 679 snd_pmac_wait_ack(&chip->capture); 680 } 681 682 683 /* 684 * handling beep 685 */ 686 void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed) 687 { 688 struct pmac_stream *rec = &chip->playback; 689 690 snd_pmac_dma_stop(rec); 691 st_le16(&chip->extra_dma.cmds->req_count, bytes); 692 st_le16(&chip->extra_dma.cmds->xfer_status, 0); 693 st_le32(&chip->extra_dma.cmds->cmd_dep, chip->extra_dma.addr); 694 st_le32(&chip->extra_dma.cmds->phy_addr, addr); 695 st_le16(&chip->extra_dma.cmds->command, OUTPUT_MORE + BR_ALWAYS); 696 out_le32(&chip->awacs->control, 697 (in_le32(&chip->awacs->control) & ~0x1f00) 698 | (speed << 8)); 699 out_le32(&chip->awacs->byteswap, 0); 700 snd_pmac_dma_set_command(rec, &chip->extra_dma); 701 snd_pmac_dma_run(rec, RUN); 702 } 703 704 void snd_pmac_beep_dma_stop(struct snd_pmac *chip) 705 { 706 snd_pmac_dma_stop(&chip->playback); 707 st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP); 708 snd_pmac_pcm_set_format(chip); /* reset format */ 709 } 710 711 712 /* 713 * interrupt handlers 714 */ 715 static irqreturn_t 716 snd_pmac_tx_intr(int irq, void *devid, struct pt_regs *regs) 717 { 718 struct snd_pmac *chip = devid; 719 snd_pmac_pcm_update(chip, &chip->playback); 720 return IRQ_HANDLED; 721 } 722 723 724 static irqreturn_t 725 snd_pmac_rx_intr(int irq, void *devid, struct pt_regs *regs) 726 { 727 struct snd_pmac *chip = devid; 728 snd_pmac_pcm_update(chip, &chip->capture); 729 return IRQ_HANDLED; 730 } 731 732 733 static irqreturn_t 734 snd_pmac_ctrl_intr(int irq, void *devid, struct pt_regs *regs) 735 { 736 struct snd_pmac *chip = devid; 737 int ctrl = in_le32(&chip->awacs->control); 738 739 /*printk("pmac: control interrupt.. 0x%x\n", ctrl);*/ 740 if (ctrl & MASK_PORTCHG) { 741 /* do something when headphone is plugged/unplugged? */ 742 if (chip->update_automute) 743 chip->update_automute(chip, 1); 744 } 745 if (ctrl & MASK_CNTLERR) { 746 int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16; 747 if (err && chip->model <= PMAC_SCREAMER) 748 snd_printk(KERN_DEBUG "error %x\n", err); 749 } 750 /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */ 751 out_le32(&chip->awacs->control, ctrl); 752 return IRQ_HANDLED; 753 } 754 755 756 /* 757 * a wrapper to feature call for compatibility 758 */ 759 static void snd_pmac_sound_feature(struct snd_pmac *chip, int enable) 760 { 761 if (ppc_md.feature_call) 762 ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable); 763 } 764 765 /* 766 * release resources 767 */ 768 769 static int snd_pmac_free(struct snd_pmac *chip) 770 { 771 /* stop sounds */ 772 if (chip->initialized) { 773 snd_pmac_dbdma_reset(chip); 774 /* disable interrupts from awacs interface */ 775 out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff); 776 } 777 778 snd_pmac_sound_feature(chip, 0); 779 780 /* clean up mixer if any */ 781 if (chip->mixer_free) 782 chip->mixer_free(chip); 783 784 snd_pmac_detach_beep(chip); 785 786 /* release resources */ 787 if (chip->irq >= 0) 788 free_irq(chip->irq, (void*)chip); 789 if (chip->tx_irq >= 0) 790 free_irq(chip->tx_irq, (void*)chip); 791 if (chip->rx_irq >= 0) 792 free_irq(chip->rx_irq, (void*)chip); 793 snd_pmac_dbdma_free(chip, &chip->playback.cmd); 794 snd_pmac_dbdma_free(chip, &chip->capture.cmd); 795 snd_pmac_dbdma_free(chip, &chip->extra_dma); 796 if (chip->macio_base) 797 iounmap(chip->macio_base); 798 if (chip->latch_base) 799 iounmap(chip->latch_base); 800 if (chip->awacs) 801 iounmap(chip->awacs); 802 if (chip->playback.dma) 803 iounmap(chip->playback.dma); 804 if (chip->capture.dma) 805 iounmap(chip->capture.dma); 806 807 if (chip->node) { 808 int i; 809 for (i = 0; i < 3; i++) { 810 if (chip->requested & (1 << i)) 811 release_mem_region(chip->rsrc[i].start, 812 chip->rsrc[i].end - 813 chip->rsrc[i].start + 1); 814 } 815 } 816 817 if (chip->pdev) 818 pci_dev_put(chip->pdev); 819 kfree(chip); 820 return 0; 821 } 822 823 824 /* 825 * free the device 826 */ 827 static int snd_pmac_dev_free(struct snd_device *device) 828 { 829 struct snd_pmac *chip = device->device_data; 830 return snd_pmac_free(chip); 831 } 832 833 834 /* 835 * check the machine support byteswap (little-endian) 836 */ 837 838 static void __init detect_byte_swap(struct snd_pmac *chip) 839 { 840 struct device_node *mio; 841 842 /* if seems that Keylargo can't byte-swap */ 843 for (mio = chip->node->parent; mio; mio = mio->parent) { 844 if (strcmp(mio->name, "mac-io") == 0) { 845 if (device_is_compatible(mio, "Keylargo")) 846 chip->can_byte_swap = 0; 847 break; 848 } 849 } 850 851 /* it seems the Pismo & iBook can't byte-swap in hardware. */ 852 if (machine_is_compatible("PowerBook3,1") || 853 machine_is_compatible("PowerBook2,1")) 854 chip->can_byte_swap = 0 ; 855 856 if (machine_is_compatible("PowerBook2,1")) 857 chip->can_duplex = 0; 858 } 859 860 861 /* 862 * detect a sound chip 863 */ 864 static int __init snd_pmac_detect(struct snd_pmac *chip) 865 { 866 struct device_node *sound = NULL; 867 unsigned int *prop, l; 868 struct macio_chip* macio; 869 870 u32 layout_id = 0; 871 872 if (!machine_is(powermac)) 873 return -ENODEV; 874 875 chip->subframe = 0; 876 chip->revision = 0; 877 chip->freqs_ok = 0xff; /* all ok */ 878 chip->model = PMAC_AWACS; 879 chip->can_byte_swap = 1; 880 chip->can_duplex = 1; 881 chip->can_capture = 1; 882 chip->num_freqs = ARRAY_SIZE(awacs_freqs); 883 chip->freq_table = awacs_freqs; 884 chip->pdev = NULL; 885 886 chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */ 887 888 /* check machine type */ 889 if (machine_is_compatible("AAPL,3400/2400") 890 || machine_is_compatible("AAPL,3500")) 891 chip->is_pbook_3400 = 1; 892 else if (machine_is_compatible("PowerBook1,1") 893 || machine_is_compatible("AAPL,PowerBook1998")) 894 chip->is_pbook_G3 = 1; 895 chip->node = find_devices("awacs"); 896 if (chip->node) 897 sound = chip->node; 898 899 /* 900 * powermac G3 models have a node called "davbus" 901 * with a child called "sound". 902 */ 903 if (!chip->node) 904 chip->node = find_devices("davbus"); 905 /* 906 * if we didn't find a davbus device, try 'i2s-a' since 907 * this seems to be what iBooks have 908 */ 909 if (! chip->node) { 910 chip->node = find_devices("i2s-a"); 911 if (chip->node && chip->node->parent && 912 chip->node->parent->parent) { 913 if (device_is_compatible(chip->node->parent->parent, 914 "K2-Keylargo")) 915 chip->is_k2 = 1; 916 } 917 } 918 if (! chip->node) 919 return -ENODEV; 920 921 if (!sound) { 922 sound = find_devices("sound"); 923 while (sound && sound->parent != chip->node) 924 sound = sound->next; 925 } 926 if (! sound) 927 return -ENODEV; 928 prop = (unsigned int *) get_property(sound, "sub-frame", NULL); 929 if (prop && *prop < 16) 930 chip->subframe = *prop; 931 prop = (unsigned int *) get_property(sound, "layout-id", NULL); 932 if (prop) 933 layout_id = *prop; 934 /* This should be verified on older screamers */ 935 if (device_is_compatible(sound, "screamer")) { 936 chip->model = PMAC_SCREAMER; 937 // chip->can_byte_swap = 0; /* FIXME: check this */ 938 } 939 if (device_is_compatible(sound, "burgundy")) { 940 chip->model = PMAC_BURGUNDY; 941 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ 942 } 943 if (device_is_compatible(sound, "daca")) { 944 chip->model = PMAC_DACA; 945 chip->can_capture = 0; /* no capture */ 946 chip->can_duplex = 0; 947 // chip->can_byte_swap = 0; /* FIXME: check this */ 948 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ 949 } 950 if (device_is_compatible(sound, "tumbler")) { 951 chip->model = PMAC_TUMBLER; 952 chip->can_capture = 0; /* no capture */ 953 chip->can_duplex = 0; 954 // chip->can_byte_swap = 0; /* FIXME: check this */ 955 chip->num_freqs = ARRAY_SIZE(tumbler_freqs); 956 chip->freq_table = tumbler_freqs; 957 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ 958 } 959 if (device_is_compatible(sound, "snapper")) { 960 chip->model = PMAC_SNAPPER; 961 // chip->can_byte_swap = 0; /* FIXME: check this */ 962 chip->num_freqs = ARRAY_SIZE(tumbler_freqs); 963 chip->freq_table = tumbler_freqs; 964 chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ 965 } 966 if (device_is_compatible(sound, "AOAKeylargo") || 967 device_is_compatible(sound, "AOAbase") || 968 device_is_compatible(sound, "AOAK2")) { 969 /* For now, only support very basic TAS3004 based machines with 970 * single frequency until proper i2s control is implemented 971 */ 972 switch(layout_id) { 973 case 0x24: 974 case 0x29: 975 case 0x33: 976 case 0x46: 977 case 0x48: 978 case 0x50: 979 case 0x5c: 980 chip->num_freqs = ARRAY_SIZE(tumbler_freqs); 981 chip->model = PMAC_SNAPPER; 982 chip->can_byte_swap = 0; /* FIXME: check this */ 983 chip->control_mask = MASK_IEPC | 0x11;/* disable IEE */ 984 break; 985 case 0x3a: 986 chip->num_freqs = ARRAY_SIZE(tumbler_freqs); 987 chip->model = PMAC_TOONIE; 988 chip->can_byte_swap = 0; /* FIXME: check this */ 989 chip->control_mask = MASK_IEPC | 0x11;/* disable IEE */ 990 break; 991 default: 992 printk(KERN_ERR "snd: Unknown layout ID 0x%x\n", 993 layout_id); 994 return -ENODEV; 995 996 } 997 } 998 prop = (unsigned int *)get_property(sound, "device-id", NULL); 999 if (prop) 1000 chip->device_id = *prop; 1001 chip->has_iic = (find_devices("perch") != NULL); 1002 1003 /* We need the PCI device for DMA allocations, let's use a crude method 1004 * for now ... 1005 */ 1006 macio = macio_find(chip->node, macio_unknown); 1007 if (macio == NULL) 1008 printk(KERN_WARNING "snd-powermac: can't locate macio !\n"); 1009 else { 1010 struct pci_dev *pdev = NULL; 1011 1012 for_each_pci_dev(pdev) { 1013 struct device_node *np = pci_device_to_OF_node(pdev); 1014 if (np && np == macio->of_node) { 1015 chip->pdev = pdev; 1016 break; 1017 } 1018 } 1019 } 1020 if (chip->pdev == NULL) 1021 printk(KERN_WARNING "snd-powermac: can't locate macio PCI" 1022 " device !\n"); 1023 1024 detect_byte_swap(chip); 1025 1026 /* look for a property saying what sample rates 1027 are available */ 1028 prop = (unsigned int *) get_property(sound, "sample-rates", &l); 1029 if (! prop) 1030 prop = (unsigned int *) get_property(sound, 1031 "output-frame-rates", &l); 1032 if (prop) { 1033 int i; 1034 chip->freqs_ok = 0; 1035 for (l /= sizeof(int); l > 0; --l) { 1036 unsigned int r = *prop++; 1037 /* Apple 'Fixed' format */ 1038 if (r >= 0x10000) 1039 r >>= 16; 1040 for (i = 0; i < chip->num_freqs; ++i) { 1041 if (r == chip->freq_table[i]) { 1042 chip->freqs_ok |= (1 << i); 1043 break; 1044 } 1045 } 1046 } 1047 } else { 1048 /* assume only 44.1khz */ 1049 chip->freqs_ok = 1; 1050 } 1051 1052 return 0; 1053 } 1054 1055 /* 1056 * exported - boolean info callbacks for ease of programming 1057 */ 1058 int snd_pmac_boolean_stereo_info(struct snd_kcontrol *kcontrol, 1059 struct snd_ctl_elem_info *uinfo) 1060 { 1061 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 1062 uinfo->count = 2; 1063 uinfo->value.integer.min = 0; 1064 uinfo->value.integer.max = 1; 1065 return 0; 1066 } 1067 1068 int snd_pmac_boolean_mono_info(struct snd_kcontrol *kcontrol, 1069 struct snd_ctl_elem_info *uinfo) 1070 { 1071 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 1072 uinfo->count = 1; 1073 uinfo->value.integer.min = 0; 1074 uinfo->value.integer.max = 1; 1075 return 0; 1076 } 1077 1078 #ifdef PMAC_SUPPORT_AUTOMUTE 1079 /* 1080 * auto-mute 1081 */ 1082 static int pmac_auto_mute_get(struct snd_kcontrol *kcontrol, 1083 struct snd_ctl_elem_value *ucontrol) 1084 { 1085 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); 1086 ucontrol->value.integer.value[0] = chip->auto_mute; 1087 return 0; 1088 } 1089 1090 static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol, 1091 struct snd_ctl_elem_value *ucontrol) 1092 { 1093 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); 1094 if (ucontrol->value.integer.value[0] != chip->auto_mute) { 1095 chip->auto_mute = ucontrol->value.integer.value[0]; 1096 if (chip->update_automute) 1097 chip->update_automute(chip, 1); 1098 return 1; 1099 } 1100 return 0; 1101 } 1102 1103 static int pmac_hp_detect_get(struct snd_kcontrol *kcontrol, 1104 struct snd_ctl_elem_value *ucontrol) 1105 { 1106 struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); 1107 if (chip->detect_headphone) 1108 ucontrol->value.integer.value[0] = chip->detect_headphone(chip); 1109 else 1110 ucontrol->value.integer.value[0] = 0; 1111 return 0; 1112 } 1113 1114 static struct snd_kcontrol_new auto_mute_controls[] __initdata = { 1115 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1116 .name = "Auto Mute Switch", 1117 .info = snd_pmac_boolean_mono_info, 1118 .get = pmac_auto_mute_get, 1119 .put = pmac_auto_mute_put, 1120 }, 1121 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1122 .name = "Headphone Detection", 1123 .access = SNDRV_CTL_ELEM_ACCESS_READ, 1124 .info = snd_pmac_boolean_mono_info, 1125 .get = pmac_hp_detect_get, 1126 }, 1127 }; 1128 1129 int __init snd_pmac_add_automute(struct snd_pmac *chip) 1130 { 1131 int err; 1132 chip->auto_mute = 1; 1133 err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip)); 1134 if (err < 0) { 1135 printk(KERN_ERR "snd-powermac: Failed to add automute control\n"); 1136 return err; 1137 } 1138 chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip); 1139 return snd_ctl_add(chip->card, chip->hp_detect_ctl); 1140 } 1141 #endif /* PMAC_SUPPORT_AUTOMUTE */ 1142 1143 /* 1144 * create and detect a pmac chip record 1145 */ 1146 int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return) 1147 { 1148 struct snd_pmac *chip; 1149 struct device_node *np; 1150 int i, err; 1151 unsigned long ctrl_addr, txdma_addr, rxdma_addr; 1152 static struct snd_device_ops ops = { 1153 .dev_free = snd_pmac_dev_free, 1154 }; 1155 1156 *chip_return = NULL; 1157 1158 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 1159 if (chip == NULL) 1160 return -ENOMEM; 1161 chip->card = card; 1162 1163 spin_lock_init(&chip->reg_lock); 1164 chip->irq = chip->tx_irq = chip->rx_irq = -1; 1165 1166 chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK; 1167 chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE; 1168 1169 if ((err = snd_pmac_detect(chip)) < 0) 1170 goto __error; 1171 1172 if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 || 1173 snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 || 1174 snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0) { 1175 err = -ENOMEM; 1176 goto __error; 1177 } 1178 1179 np = chip->node; 1180 chip->requested = 0; 1181 if (chip->is_k2) { 1182 static char *rnames[] = { 1183 "Sound Control", "Sound DMA" }; 1184 if (np->n_intrs < 3) { 1185 err = -ENODEV; 1186 goto __error; 1187 } 1188 for (i = 0; i < 2; i ++) { 1189 if (of_address_to_resource(np->parent, i, 1190 &chip->rsrc[i])) { 1191 printk(KERN_ERR "snd: can't translate rsrc " 1192 " %d (%s)\n", i, rnames[i]); 1193 err = -ENODEV; 1194 goto __error; 1195 } 1196 if (request_mem_region(chip->rsrc[i].start, 1197 chip->rsrc[i].end - 1198 chip->rsrc[i].start + 1, 1199 rnames[i]) == NULL) { 1200 printk(KERN_ERR "snd: can't request rsrc " 1201 " %d (%s: 0x%08lx:%08lx)\n", 1202 i, rnames[i], chip->rsrc[i].start, 1203 chip->rsrc[i].end); 1204 err = -ENODEV; 1205 goto __error; 1206 } 1207 chip->requested |= (1 << i); 1208 } 1209 ctrl_addr = chip->rsrc[0].start; 1210 txdma_addr = chip->rsrc[1].start; 1211 rxdma_addr = txdma_addr + 0x100; 1212 } else { 1213 static char *rnames[] = { 1214 "Sound Control", "Sound Tx DMA", "Sound Rx DMA" }; 1215 if (np->n_intrs < 3) { 1216 err = -ENODEV; 1217 goto __error; 1218 } 1219 for (i = 0; i < 3; i ++) { 1220 if (of_address_to_resource(np, i, 1221 &chip->rsrc[i])) { 1222 printk(KERN_ERR "snd: can't translate rsrc " 1223 " %d (%s)\n", i, rnames[i]); 1224 err = -ENODEV; 1225 goto __error; 1226 } 1227 if (request_mem_region(chip->rsrc[i].start, 1228 chip->rsrc[i].end - 1229 chip->rsrc[i].start + 1, 1230 rnames[i]) == NULL) { 1231 printk(KERN_ERR "snd: can't request rsrc " 1232 " %d (%s: 0x%08lx:%08lx)\n", 1233 i, rnames[i], chip->rsrc[i].start, 1234 chip->rsrc[i].end); 1235 err = -ENODEV; 1236 goto __error; 1237 } 1238 chip->requested |= (1 << i); 1239 } 1240 ctrl_addr = chip->rsrc[0].start; 1241 txdma_addr = chip->rsrc[1].start; 1242 rxdma_addr = chip->rsrc[2].start; 1243 } 1244 1245 chip->awacs = ioremap(ctrl_addr, 0x1000); 1246 chip->playback.dma = ioremap(txdma_addr, 0x100); 1247 chip->capture.dma = ioremap(rxdma_addr, 0x100); 1248 if (chip->model <= PMAC_BURGUNDY) { 1249 if (request_irq(np->intrs[0].line, snd_pmac_ctrl_intr, 0, 1250 "PMac", (void*)chip)) { 1251 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[0].line); 1252 err = -EBUSY; 1253 goto __error; 1254 } 1255 chip->irq = np->intrs[0].line; 1256 } 1257 if (request_irq(np->intrs[1].line, snd_pmac_tx_intr, 0, 1258 "PMac Output", (void*)chip)) { 1259 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[1].line); 1260 err = -EBUSY; 1261 goto __error; 1262 } 1263 chip->tx_irq = np->intrs[1].line; 1264 if (request_irq(np->intrs[2].line, snd_pmac_rx_intr, 0, 1265 "PMac Input", (void*)chip)) { 1266 snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[2].line); 1267 err = -EBUSY; 1268 goto __error; 1269 } 1270 chip->rx_irq = np->intrs[2].line; 1271 1272 snd_pmac_sound_feature(chip, 1); 1273 1274 /* reset */ 1275 if (chip->model == PMAC_AWACS) 1276 out_le32(&chip->awacs->control, 0x11); 1277 1278 /* Powerbooks have odd ways of enabling inputs such as 1279 an expansion-bay CD or sound from an internal modem 1280 or a PC-card modem. */ 1281 if (chip->is_pbook_3400) { 1282 /* Enable CD and PC-card sound inputs. */ 1283 /* This is done by reading from address 1284 * f301a000, + 0x10 to enable the expansion-bay 1285 * CD sound input, + 0x80 to enable the PC-card 1286 * sound input. The 0x100 enables the SCSI bus 1287 * terminator power. 1288 */ 1289 chip->latch_base = ioremap (0xf301a000, 0x1000); 1290 in_8(chip->latch_base + 0x190); 1291 } else if (chip->is_pbook_G3) { 1292 struct device_node* mio; 1293 for (mio = chip->node->parent; mio; mio = mio->parent) { 1294 if (strcmp(mio->name, "mac-io") == 0) { 1295 struct resource r; 1296 if (of_address_to_resource(mio, 0, &r) == 0) 1297 chip->macio_base = 1298 ioremap(r.start, 0x40); 1299 break; 1300 } 1301 } 1302 /* Enable CD sound input. */ 1303 /* The relevant bits for writing to this byte are 0x8f. 1304 * I haven't found out what the 0x80 bit does. 1305 * For the 0xf bits, writing 3 or 7 enables the CD 1306 * input, any other value disables it. Values 1307 * 1, 3, 5, 7 enable the microphone. Values 0, 2, 1308 * 4, 6, 8 - f enable the input from the modem. 1309 */ 1310 if (chip->macio_base) 1311 out_8(chip->macio_base + 0x37, 3); 1312 } 1313 1314 /* Reset dbdma channels */ 1315 snd_pmac_dbdma_reset(chip); 1316 1317 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) 1318 goto __error; 1319 1320 *chip_return = chip; 1321 return 0; 1322 1323 __error: 1324 if (chip->pdev) 1325 pci_dev_put(chip->pdev); 1326 snd_pmac_free(chip); 1327 return err; 1328 } 1329 1330 1331 /* 1332 * sleep notify for powerbook 1333 */ 1334 1335 #ifdef CONFIG_PM 1336 1337 /* 1338 * Save state when going to sleep, restore it afterwards. 1339 */ 1340 1341 void snd_pmac_suspend(struct snd_pmac *chip) 1342 { 1343 unsigned long flags; 1344 1345 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); 1346 if (chip->suspend) 1347 chip->suspend(chip); 1348 snd_pcm_suspend_all(chip->pcm); 1349 spin_lock_irqsave(&chip->reg_lock, flags); 1350 snd_pmac_beep_stop(chip); 1351 spin_unlock_irqrestore(&chip->reg_lock, flags); 1352 if (chip->irq >= 0) 1353 disable_irq(chip->irq); 1354 if (chip->tx_irq >= 0) 1355 disable_irq(chip->tx_irq); 1356 if (chip->rx_irq >= 0) 1357 disable_irq(chip->rx_irq); 1358 snd_pmac_sound_feature(chip, 0); 1359 } 1360 1361 void snd_pmac_resume(struct snd_pmac *chip) 1362 { 1363 snd_pmac_sound_feature(chip, 1); 1364 if (chip->resume) 1365 chip->resume(chip); 1366 /* enable CD sound input */ 1367 if (chip->macio_base && chip->is_pbook_G3) 1368 out_8(chip->macio_base + 0x37, 3); 1369 else if (chip->is_pbook_3400) 1370 in_8(chip->latch_base + 0x190); 1371 1372 snd_pmac_pcm_set_format(chip); 1373 1374 if (chip->irq >= 0) 1375 enable_irq(chip->irq); 1376 if (chip->tx_irq >= 0) 1377 enable_irq(chip->tx_irq); 1378 if (chip->rx_irq >= 0) 1379 enable_irq(chip->rx_irq); 1380 1381 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); 1382 } 1383 1384 #endif /* CONFIG_PM */ 1385 1386