1 /* 2 * Driver for SiS7019 Audio Accelerator 3 * 4 * Copyright (C) 2004-2007, David Dillow 5 * Written by David Dillow <dave@thedillows.org> 6 * Inspired by the Trident 4D-WaveDX/NX driver. 7 * 8 * All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation, version 2. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 */ 23 24 #include <sound/driver.h> 25 #include <linux/init.h> 26 #include <linux/pci.h> 27 #include <linux/time.h> 28 #include <linux/moduleparam.h> 29 #include <linux/interrupt.h> 30 #include <linux/delay.h> 31 #include <sound/core.h> 32 #include <sound/ac97_codec.h> 33 #include <sound/initval.h> 34 #include "sis7019.h" 35 36 MODULE_AUTHOR("David Dillow <dave@thedillows.org>"); 37 MODULE_DESCRIPTION("SiS7019"); 38 MODULE_LICENSE("GPL"); 39 MODULE_SUPPORTED_DEVICE("{{SiS,SiS7019 Audio Accelerator}}"); 40 41 static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ 42 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 43 static int enable = 1; 44 45 module_param(index, int, 0444); 46 MODULE_PARM_DESC(index, "Index value for SiS7019 Audio Accelerator."); 47 module_param(id, charp, 0444); 48 MODULE_PARM_DESC(id, "ID string for SiS7019 Audio Accelerator."); 49 module_param(enable, bool, 0444); 50 MODULE_PARM_DESC(enable, "Enable SiS7019 Audio Accelerator."); 51 52 static struct pci_device_id snd_sis7019_ids[] = { 53 { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x7019) }, 54 { 0, } 55 }; 56 57 MODULE_DEVICE_TABLE(pci, snd_sis7019_ids); 58 59 /* There are three timing modes for the voices. 60 * 61 * For both playback and capture, when the buffer is one or two periods long, 62 * we use the hardware's built-in Mid-Loop Interrupt and End-Loop Interrupt 63 * to let us know when the periods have ended. 64 * 65 * When performing playback with more than two periods per buffer, we set 66 * the "Stop Sample Offset" and tell the hardware to interrupt us when we 67 * reach it. We then update the offset and continue on until we are 68 * interrupted for the next period. 69 * 70 * Capture channels do not have a SSO, so we allocate a playback channel to 71 * use as a timer for the capture periods. We use the SSO on the playback 72 * channel to clock out virtual periods, and adjust the virtual period length 73 * to maintain synchronization. This algorithm came from the Trident driver. 74 * 75 * FIXME: It'd be nice to make use of some of the synth features in the 76 * hardware, but a woeful lack of documentation is a significant roadblock. 77 */ 78 struct voice { 79 u16 flags; 80 #define VOICE_IN_USE 1 81 #define VOICE_CAPTURE 2 82 #define VOICE_SSO_TIMING 4 83 #define VOICE_SYNC_TIMING 8 84 u16 sync_cso; 85 u16 period_size; 86 u16 buffer_size; 87 u16 sync_period_size; 88 u16 sync_buffer_size; 89 u32 sso; 90 u32 vperiod; 91 struct snd_pcm_substream *substream; 92 struct voice *timing; 93 void __iomem *ctrl_base; 94 void __iomem *wave_base; 95 void __iomem *sync_base; 96 int num; 97 }; 98 99 /* We need four pages to store our wave parameters during a suspend. If 100 * we're not doing power management, we still need to allocate a page 101 * for the silence buffer. 102 */ 103 #ifdef CONFIG_PM 104 #define SIS_SUSPEND_PAGES 4 105 #else 106 #define SIS_SUSPEND_PAGES 1 107 #endif 108 109 struct sis7019 { 110 unsigned long ioport; 111 void __iomem *ioaddr; 112 int irq; 113 int codecs_present; 114 115 struct pci_dev *pci; 116 struct snd_pcm *pcm; 117 struct snd_card *card; 118 struct snd_ac97 *ac97[3]; 119 120 /* Protect against more than one thread hitting the AC97 121 * registers (in a more polite manner than pounding the hardware 122 * semaphore) 123 */ 124 struct mutex ac97_mutex; 125 126 /* voice_lock protects allocation/freeing of the voice descriptions 127 */ 128 spinlock_t voice_lock; 129 130 struct voice voices[64]; 131 struct voice capture_voice; 132 133 /* Allocate pages to store the internal wave state during 134 * suspends. When we're operating, this can be used as a silence 135 * buffer for a timing channel. 136 */ 137 void *suspend_state[SIS_SUSPEND_PAGES]; 138 139 int silence_users; 140 dma_addr_t silence_dma_addr; 141 }; 142 143 #define SIS_PRIMARY_CODEC_PRESENT 0x0001 144 #define SIS_SECONDARY_CODEC_PRESENT 0x0002 145 #define SIS_TERTIARY_CODEC_PRESENT 0x0004 146 147 /* The HW offset parameters (Loop End, Stop Sample, End Sample) have a 148 * documented range of 8-0xfff8 samples. Given that they are 0-based, 149 * that places our period/buffer range at 9-0xfff9 samples. That makes the 150 * max buffer size 0xfff9 samples * 2 channels * 2 bytes per sample, and 151 * max samples / min samples gives us the max periods in a buffer. 152 * 153 * We'll add a constraint upon open that limits the period and buffer sample 154 * size to values that are legal for the hardware. 155 */ 156 static struct snd_pcm_hardware sis_playback_hw_info = { 157 .info = (SNDRV_PCM_INFO_MMAP | 158 SNDRV_PCM_INFO_MMAP_VALID | 159 SNDRV_PCM_INFO_INTERLEAVED | 160 SNDRV_PCM_INFO_BLOCK_TRANSFER | 161 SNDRV_PCM_INFO_SYNC_START | 162 SNDRV_PCM_INFO_RESUME), 163 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 164 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 165 .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_CONTINUOUS, 166 .rate_min = 4000, 167 .rate_max = 48000, 168 .channels_min = 1, 169 .channels_max = 2, 170 .buffer_bytes_max = (0xfff9 * 4), 171 .period_bytes_min = 9, 172 .period_bytes_max = (0xfff9 * 4), 173 .periods_min = 1, 174 .periods_max = (0xfff9 / 9), 175 }; 176 177 static struct snd_pcm_hardware sis_capture_hw_info = { 178 .info = (SNDRV_PCM_INFO_MMAP | 179 SNDRV_PCM_INFO_MMAP_VALID | 180 SNDRV_PCM_INFO_INTERLEAVED | 181 SNDRV_PCM_INFO_BLOCK_TRANSFER | 182 SNDRV_PCM_INFO_SYNC_START | 183 SNDRV_PCM_INFO_RESUME), 184 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 185 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 186 .rates = SNDRV_PCM_RATE_48000, 187 .rate_min = 4000, 188 .rate_max = 48000, 189 .channels_min = 1, 190 .channels_max = 2, 191 .buffer_bytes_max = (0xfff9 * 4), 192 .period_bytes_min = 9, 193 .period_bytes_max = (0xfff9 * 4), 194 .periods_min = 1, 195 .periods_max = (0xfff9 / 9), 196 }; 197 198 static void sis_update_sso(struct voice *voice, u16 period) 199 { 200 void __iomem *base = voice->ctrl_base; 201 202 voice->sso += period; 203 if (voice->sso >= voice->buffer_size) 204 voice->sso -= voice->buffer_size; 205 206 /* Enforce the documented hardware minimum offset */ 207 if (voice->sso < 8) 208 voice->sso = 8; 209 210 /* The SSO is in the upper 16 bits of the register. */ 211 writew(voice->sso & 0xffff, base + SIS_PLAY_DMA_SSO_ESO + 2); 212 } 213 214 static void sis_update_voice(struct voice *voice) 215 { 216 if (voice->flags & VOICE_SSO_TIMING) { 217 sis_update_sso(voice, voice->period_size); 218 } else if (voice->flags & VOICE_SYNC_TIMING) { 219 int sync; 220 221 /* If we've not hit the end of the virtual period, update 222 * our records and keep going. 223 */ 224 if (voice->vperiod > voice->period_size) { 225 voice->vperiod -= voice->period_size; 226 if (voice->vperiod < voice->period_size) 227 sis_update_sso(voice, voice->vperiod); 228 else 229 sis_update_sso(voice, voice->period_size); 230 return; 231 } 232 233 /* Calculate our relative offset between the target and 234 * the actual CSO value. Since we're operating in a loop, 235 * if the value is more than half way around, we can 236 * consider ourselves wrapped. 237 */ 238 sync = voice->sync_cso; 239 sync -= readw(voice->sync_base + SIS_CAPTURE_DMA_FORMAT_CSO); 240 if (sync > (voice->sync_buffer_size / 2)) 241 sync -= voice->sync_buffer_size; 242 243 /* If sync is positive, then we interrupted too early, and 244 * we'll need to come back in a few samples and try again. 245 * There's a minimum wait, as it takes some time for the DMA 246 * engine to startup, etc... 247 */ 248 if (sync > 0) { 249 if (sync < 16) 250 sync = 16; 251 sis_update_sso(voice, sync); 252 return; 253 } 254 255 /* Ok, we interrupted right on time, or (hopefully) just 256 * a bit late. We'll adjst our next waiting period based 257 * on how close we got. 258 * 259 * We need to stay just behind the actual channel to ensure 260 * it really is past a period when we get our interrupt -- 261 * otherwise we'll fall into the early code above and have 262 * a minimum wait time, which makes us quite late here, 263 * eating into the user's time to refresh the buffer, esp. 264 * if using small periods. 265 * 266 * If we're less than 9 samples behind, we're on target. 267 */ 268 if (sync > -9) 269 voice->vperiod = voice->sync_period_size + 1; 270 else 271 voice->vperiod = voice->sync_period_size - 4; 272 273 if (voice->vperiod < voice->buffer_size) { 274 sis_update_sso(voice, voice->vperiod); 275 voice->vperiod = 0; 276 } else 277 sis_update_sso(voice, voice->period_size); 278 279 sync = voice->sync_cso + voice->sync_period_size; 280 if (sync >= voice->sync_buffer_size) 281 sync -= voice->sync_buffer_size; 282 voice->sync_cso = sync; 283 } 284 285 snd_pcm_period_elapsed(voice->substream); 286 } 287 288 static void sis_voice_irq(u32 status, struct voice *voice) 289 { 290 int bit; 291 292 while (status) { 293 bit = __ffs(status); 294 status >>= bit + 1; 295 voice += bit; 296 sis_update_voice(voice); 297 voice++; 298 } 299 } 300 301 static irqreturn_t sis_interrupt(int irq, void *dev) 302 { 303 struct sis7019 *sis = dev; 304 unsigned long io = sis->ioport; 305 struct voice *voice; 306 u32 intr, status; 307 308 /* We only use the DMA interrupts, and we don't enable any other 309 * source of interrupts. But, it is possible to see an interupt 310 * status that didn't actually interrupt us, so eliminate anything 311 * we're not expecting to avoid falsely claiming an IRQ, and an 312 * ensuing endless loop. 313 */ 314 intr = inl(io + SIS_GISR); 315 intr &= SIS_GISR_AUDIO_PLAY_DMA_IRQ_STATUS | 316 SIS_GISR_AUDIO_RECORD_DMA_IRQ_STATUS; 317 if (!intr) 318 return IRQ_NONE; 319 320 do { 321 status = inl(io + SIS_PISR_A); 322 if (status) { 323 sis_voice_irq(status, sis->voices); 324 outl(status, io + SIS_PISR_A); 325 } 326 327 status = inl(io + SIS_PISR_B); 328 if (status) { 329 sis_voice_irq(status, &sis->voices[32]); 330 outl(status, io + SIS_PISR_B); 331 } 332 333 status = inl(io + SIS_RISR); 334 if (status) { 335 voice = &sis->capture_voice; 336 if (!voice->timing) 337 snd_pcm_period_elapsed(voice->substream); 338 339 outl(status, io + SIS_RISR); 340 } 341 342 outl(intr, io + SIS_GISR); 343 intr = inl(io + SIS_GISR); 344 intr &= SIS_GISR_AUDIO_PLAY_DMA_IRQ_STATUS | 345 SIS_GISR_AUDIO_RECORD_DMA_IRQ_STATUS; 346 } while (intr); 347 348 return IRQ_HANDLED; 349 } 350 351 static u32 sis_rate_to_delta(unsigned int rate) 352 { 353 u32 delta; 354 355 /* This was copied from the trident driver, but it seems its gotten 356 * around a bit... nevertheless, it works well. 357 * 358 * We special case 44100 and 8000 since rounding with the equation 359 * does not give us an accurate enough value. For 11025 and 22050 360 * the equation gives us the best answer. All other frequencies will 361 * also use the equation. JDW 362 */ 363 if (rate == 44100) 364 delta = 0xeb3; 365 else if (rate == 8000) 366 delta = 0x2ab; 367 else if (rate == 48000) 368 delta = 0x1000; 369 else 370 delta = (((rate << 12) + 24000) / 48000) & 0x0000ffff; 371 return delta; 372 } 373 374 static void __sis_map_silence(struct sis7019 *sis) 375 { 376 /* Helper function: must hold sis->voice_lock on entry */ 377 if (!sis->silence_users) 378 sis->silence_dma_addr = pci_map_single(sis->pci, 379 sis->suspend_state[0], 380 4096, PCI_DMA_TODEVICE); 381 sis->silence_users++; 382 } 383 384 static void __sis_unmap_silence(struct sis7019 *sis) 385 { 386 /* Helper function: must hold sis->voice_lock on entry */ 387 sis->silence_users--; 388 if (!sis->silence_users) 389 pci_unmap_single(sis->pci, sis->silence_dma_addr, 4096, 390 PCI_DMA_TODEVICE); 391 } 392 393 static void sis_free_voice(struct sis7019 *sis, struct voice *voice) 394 { 395 unsigned long flags; 396 397 spin_lock_irqsave(&sis->voice_lock, flags); 398 if (voice->timing) { 399 __sis_unmap_silence(sis); 400 voice->timing->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING | 401 VOICE_SYNC_TIMING); 402 voice->timing = NULL; 403 } 404 voice->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING | VOICE_SYNC_TIMING); 405 spin_unlock_irqrestore(&sis->voice_lock, flags); 406 } 407 408 static struct voice *__sis_alloc_playback_voice(struct sis7019 *sis) 409 { 410 /* Must hold the voice_lock on entry */ 411 struct voice *voice; 412 int i; 413 414 for (i = 0; i < 64; i++) { 415 voice = &sis->voices[i]; 416 if (voice->flags & VOICE_IN_USE) 417 continue; 418 voice->flags |= VOICE_IN_USE; 419 goto found_one; 420 } 421 voice = NULL; 422 423 found_one: 424 return voice; 425 } 426 427 static struct voice *sis_alloc_playback_voice(struct sis7019 *sis) 428 { 429 struct voice *voice; 430 unsigned long flags; 431 432 spin_lock_irqsave(&sis->voice_lock, flags); 433 voice = __sis_alloc_playback_voice(sis); 434 spin_unlock_irqrestore(&sis->voice_lock, flags); 435 436 return voice; 437 } 438 439 static int sis_alloc_timing_voice(struct snd_pcm_substream *substream, 440 struct snd_pcm_hw_params *hw_params) 441 { 442 struct sis7019 *sis = snd_pcm_substream_chip(substream); 443 struct snd_pcm_runtime *runtime = substream->runtime; 444 struct voice *voice = runtime->private_data; 445 unsigned int period_size, buffer_size; 446 unsigned long flags; 447 int needed; 448 449 /* If there are one or two periods per buffer, we don't need a 450 * timing voice, as we can use the capture channel's interrupts 451 * to clock out the periods. 452 */ 453 period_size = params_period_size(hw_params); 454 buffer_size = params_buffer_size(hw_params); 455 needed = (period_size != buffer_size && 456 period_size != (buffer_size / 2)); 457 458 if (needed && !voice->timing) { 459 spin_lock_irqsave(&sis->voice_lock, flags); 460 voice->timing = __sis_alloc_playback_voice(sis); 461 if (voice->timing) 462 __sis_map_silence(sis); 463 spin_unlock_irqrestore(&sis->voice_lock, flags); 464 if (!voice->timing) 465 return -ENOMEM; 466 voice->timing->substream = substream; 467 } else if (!needed && voice->timing) { 468 sis_free_voice(sis, voice); 469 voice->timing = NULL; 470 } 471 472 return 0; 473 } 474 475 static int sis_playback_open(struct snd_pcm_substream *substream) 476 { 477 struct sis7019 *sis = snd_pcm_substream_chip(substream); 478 struct snd_pcm_runtime *runtime = substream->runtime; 479 struct voice *voice; 480 481 voice = sis_alloc_playback_voice(sis); 482 if (!voice) 483 return -EAGAIN; 484 485 voice->substream = substream; 486 runtime->private_data = voice; 487 runtime->hw = sis_playback_hw_info; 488 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 489 9, 0xfff9); 490 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 491 9, 0xfff9); 492 snd_pcm_set_sync(substream); 493 return 0; 494 } 495 496 static int sis_substream_close(struct snd_pcm_substream *substream) 497 { 498 struct sis7019 *sis = snd_pcm_substream_chip(substream); 499 struct snd_pcm_runtime *runtime = substream->runtime; 500 struct voice *voice = runtime->private_data; 501 502 sis_free_voice(sis, voice); 503 return 0; 504 } 505 506 static int sis_playback_hw_params(struct snd_pcm_substream *substream, 507 struct snd_pcm_hw_params *hw_params) 508 { 509 return snd_pcm_lib_malloc_pages(substream, 510 params_buffer_bytes(hw_params)); 511 } 512 513 static int sis_hw_free(struct snd_pcm_substream *substream) 514 { 515 return snd_pcm_lib_free_pages(substream); 516 } 517 518 static int sis_pcm_playback_prepare(struct snd_pcm_substream *substream) 519 { 520 struct snd_pcm_runtime *runtime = substream->runtime; 521 struct voice *voice = runtime->private_data; 522 void __iomem *ctrl_base = voice->ctrl_base; 523 void __iomem *wave_base = voice->wave_base; 524 u32 format, dma_addr, control, sso_eso, delta, reg; 525 u16 leo; 526 527 /* We rely on the PCM core to ensure that the parameters for this 528 * substream do not change on us while we're programming the HW. 529 */ 530 format = 0; 531 if (snd_pcm_format_width(runtime->format) == 8) 532 format |= SIS_PLAY_DMA_FORMAT_8BIT; 533 if (!snd_pcm_format_signed(runtime->format)) 534 format |= SIS_PLAY_DMA_FORMAT_UNSIGNED; 535 if (runtime->channels == 1) 536 format |= SIS_PLAY_DMA_FORMAT_MONO; 537 538 /* The baseline setup is for a single period per buffer, and 539 * we add bells and whistles as needed from there. 540 */ 541 dma_addr = runtime->dma_addr; 542 leo = runtime->buffer_size - 1; 543 control = leo | SIS_PLAY_DMA_LOOP | SIS_PLAY_DMA_INTR_AT_LEO; 544 sso_eso = leo; 545 546 if (runtime->period_size == (runtime->buffer_size / 2)) { 547 control |= SIS_PLAY_DMA_INTR_AT_MLP; 548 } else if (runtime->period_size != runtime->buffer_size) { 549 voice->flags |= VOICE_SSO_TIMING; 550 voice->sso = runtime->period_size - 1; 551 voice->period_size = runtime->period_size; 552 voice->buffer_size = runtime->buffer_size; 553 554 control &= ~SIS_PLAY_DMA_INTR_AT_LEO; 555 control |= SIS_PLAY_DMA_INTR_AT_SSO; 556 sso_eso |= (runtime->period_size - 1) << 16; 557 } 558 559 delta = sis_rate_to_delta(runtime->rate); 560 561 /* Ok, we're ready to go, set up the channel. 562 */ 563 writel(format, ctrl_base + SIS_PLAY_DMA_FORMAT_CSO); 564 writel(dma_addr, ctrl_base + SIS_PLAY_DMA_BASE); 565 writel(control, ctrl_base + SIS_PLAY_DMA_CONTROL); 566 writel(sso_eso, ctrl_base + SIS_PLAY_DMA_SSO_ESO); 567 568 for (reg = 0; reg < SIS_WAVE_SIZE; reg += 4) 569 writel(0, wave_base + reg); 570 571 writel(SIS_WAVE_GENERAL_WAVE_VOLUME, wave_base + SIS_WAVE_GENERAL); 572 writel(delta << 16, wave_base + SIS_WAVE_GENERAL_ARTICULATION); 573 writel(SIS_WAVE_CHANNEL_CONTROL_FIRST_SAMPLE | 574 SIS_WAVE_CHANNEL_CONTROL_AMP_ENABLE | 575 SIS_WAVE_CHANNEL_CONTROL_INTERPOLATE_ENABLE, 576 wave_base + SIS_WAVE_CHANNEL_CONTROL); 577 578 /* Force PCI writes to post. */ 579 readl(ctrl_base); 580 581 return 0; 582 } 583 584 static int sis_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 585 { 586 struct sis7019 *sis = snd_pcm_substream_chip(substream); 587 unsigned long io = sis->ioport; 588 struct snd_pcm_substream *s; 589 struct voice *voice; 590 void *chip; 591 int starting; 592 u32 record = 0; 593 u32 play[2] = { 0, 0 }; 594 595 /* No locks needed, as the PCM core will hold the locks on the 596 * substreams, and the HW will only start/stop the indicated voices 597 * without changing the state of the others. 598 */ 599 switch (cmd) { 600 case SNDRV_PCM_TRIGGER_START: 601 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 602 case SNDRV_PCM_TRIGGER_RESUME: 603 starting = 1; 604 break; 605 case SNDRV_PCM_TRIGGER_STOP: 606 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 607 case SNDRV_PCM_TRIGGER_SUSPEND: 608 starting = 0; 609 break; 610 default: 611 return -EINVAL; 612 } 613 614 snd_pcm_group_for_each_entry(s, substream) { 615 /* Make sure it is for us... */ 616 chip = snd_pcm_substream_chip(s); 617 if (chip != sis) 618 continue; 619 620 voice = s->runtime->private_data; 621 if (voice->flags & VOICE_CAPTURE) { 622 record |= 1 << voice->num; 623 voice = voice->timing; 624 } 625 626 /* voice could be NULL if this a recording stream, and it 627 * doesn't have an external timing channel. 628 */ 629 if (voice) 630 play[voice->num / 32] |= 1 << (voice->num & 0x1f); 631 632 snd_pcm_trigger_done(s, substream); 633 } 634 635 if (starting) { 636 if (record) 637 outl(record, io + SIS_RECORD_START_REG); 638 if (play[0]) 639 outl(play[0], io + SIS_PLAY_START_A_REG); 640 if (play[1]) 641 outl(play[1], io + SIS_PLAY_START_B_REG); 642 } else { 643 if (record) 644 outl(record, io + SIS_RECORD_STOP_REG); 645 if (play[0]) 646 outl(play[0], io + SIS_PLAY_STOP_A_REG); 647 if (play[1]) 648 outl(play[1], io + SIS_PLAY_STOP_B_REG); 649 } 650 return 0; 651 } 652 653 static snd_pcm_uframes_t sis_pcm_pointer(struct snd_pcm_substream *substream) 654 { 655 struct snd_pcm_runtime *runtime = substream->runtime; 656 struct voice *voice = runtime->private_data; 657 u32 cso; 658 659 cso = readl(voice->ctrl_base + SIS_PLAY_DMA_FORMAT_CSO); 660 cso &= 0xffff; 661 return cso; 662 } 663 664 static int sis_capture_open(struct snd_pcm_substream *substream) 665 { 666 struct sis7019 *sis = snd_pcm_substream_chip(substream); 667 struct snd_pcm_runtime *runtime = substream->runtime; 668 struct voice *voice = &sis->capture_voice; 669 unsigned long flags; 670 671 /* FIXME: The driver only supports recording from one channel 672 * at the moment, but it could support more. 673 */ 674 spin_lock_irqsave(&sis->voice_lock, flags); 675 if (voice->flags & VOICE_IN_USE) 676 voice = NULL; 677 else 678 voice->flags |= VOICE_IN_USE; 679 spin_unlock_irqrestore(&sis->voice_lock, flags); 680 681 if (!voice) 682 return -EAGAIN; 683 684 voice->substream = substream; 685 runtime->private_data = voice; 686 runtime->hw = sis_capture_hw_info; 687 runtime->hw.rates = sis->ac97[0]->rates[AC97_RATES_ADC]; 688 snd_pcm_limit_hw_rates(runtime); 689 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 690 9, 0xfff9); 691 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 692 9, 0xfff9); 693 snd_pcm_set_sync(substream); 694 return 0; 695 } 696 697 static int sis_capture_hw_params(struct snd_pcm_substream *substream, 698 struct snd_pcm_hw_params *hw_params) 699 { 700 struct sis7019 *sis = snd_pcm_substream_chip(substream); 701 int rc; 702 703 rc = snd_ac97_set_rate(sis->ac97[0], AC97_PCM_LR_ADC_RATE, 704 params_rate(hw_params)); 705 if (rc) 706 goto out; 707 708 rc = snd_pcm_lib_malloc_pages(substream, 709 params_buffer_bytes(hw_params)); 710 if (rc < 0) 711 goto out; 712 713 rc = sis_alloc_timing_voice(substream, hw_params); 714 715 out: 716 return rc; 717 } 718 719 static void sis_prepare_timing_voice(struct voice *voice, 720 struct snd_pcm_substream *substream) 721 { 722 struct sis7019 *sis = snd_pcm_substream_chip(substream); 723 struct snd_pcm_runtime *runtime = substream->runtime; 724 struct voice *timing = voice->timing; 725 void __iomem *play_base = timing->ctrl_base; 726 void __iomem *wave_base = timing->wave_base; 727 u16 buffer_size, period_size; 728 u32 format, control, sso_eso, delta; 729 u32 vperiod, sso, reg; 730 731 /* Set our initial buffer and period as large as we can given a 732 * single page of silence. 733 */ 734 buffer_size = 4096 / runtime->channels; 735 buffer_size /= snd_pcm_format_size(runtime->format, 1); 736 period_size = buffer_size; 737 738 /* Initially, we want to interrupt just a bit behind the end of 739 * the period we're clocking out. 10 samples seems to give a good 740 * delay. 741 * 742 * We want to spread our interrupts throughout the virtual period, 743 * so that we don't end up with two interrupts back to back at the 744 * end -- this helps minimize the effects of any jitter. Adjust our 745 * clocking period size so that the last period is at least a fourth 746 * of a full period. 747 * 748 * This is all moot if we don't need to use virtual periods. 749 */ 750 vperiod = runtime->period_size + 10; 751 if (vperiod > period_size) { 752 u16 tail = vperiod % period_size; 753 u16 quarter_period = period_size / 4; 754 755 if (tail && tail < quarter_period) { 756 u16 loops = vperiod / period_size; 757 758 tail = quarter_period - tail; 759 tail += loops - 1; 760 tail /= loops; 761 period_size -= tail; 762 } 763 764 sso = period_size - 1; 765 } else { 766 /* The initial period will fit inside the buffer, so we 767 * don't need to use virtual periods -- disable them. 768 */ 769 period_size = runtime->period_size; 770 sso = vperiod - 1; 771 vperiod = 0; 772 } 773 774 /* The interrupt handler implements the timing syncronization, so 775 * setup its state. 776 */ 777 timing->flags |= VOICE_SYNC_TIMING; 778 timing->sync_base = voice->ctrl_base; 779 timing->sync_cso = runtime->period_size - 1; 780 timing->sync_period_size = runtime->period_size; 781 timing->sync_buffer_size = runtime->buffer_size; 782 timing->period_size = period_size; 783 timing->buffer_size = buffer_size; 784 timing->sso = sso; 785 timing->vperiod = vperiod; 786 787 /* Using unsigned samples with the all-zero silence buffer 788 * forces the output to the lower rail, killing playback. 789 * So ignore unsigned vs signed -- it doesn't change the timing. 790 */ 791 format = 0; 792 if (snd_pcm_format_width(runtime->format) == 8) 793 format = SIS_CAPTURE_DMA_FORMAT_8BIT; 794 if (runtime->channels == 1) 795 format |= SIS_CAPTURE_DMA_FORMAT_MONO; 796 797 control = timing->buffer_size - 1; 798 control |= SIS_PLAY_DMA_LOOP | SIS_PLAY_DMA_INTR_AT_SSO; 799 sso_eso = timing->buffer_size - 1; 800 sso_eso |= timing->sso << 16; 801 802 delta = sis_rate_to_delta(runtime->rate); 803 804 /* We've done the math, now configure the channel. 805 */ 806 writel(format, play_base + SIS_PLAY_DMA_FORMAT_CSO); 807 writel(sis->silence_dma_addr, play_base + SIS_PLAY_DMA_BASE); 808 writel(control, play_base + SIS_PLAY_DMA_CONTROL); 809 writel(sso_eso, play_base + SIS_PLAY_DMA_SSO_ESO); 810 811 for (reg = 0; reg < SIS_WAVE_SIZE; reg += 4) 812 writel(0, wave_base + reg); 813 814 writel(SIS_WAVE_GENERAL_WAVE_VOLUME, wave_base + SIS_WAVE_GENERAL); 815 writel(delta << 16, wave_base + SIS_WAVE_GENERAL_ARTICULATION); 816 writel(SIS_WAVE_CHANNEL_CONTROL_FIRST_SAMPLE | 817 SIS_WAVE_CHANNEL_CONTROL_AMP_ENABLE | 818 SIS_WAVE_CHANNEL_CONTROL_INTERPOLATE_ENABLE, 819 wave_base + SIS_WAVE_CHANNEL_CONTROL); 820 } 821 822 static int sis_pcm_capture_prepare(struct snd_pcm_substream *substream) 823 { 824 struct snd_pcm_runtime *runtime = substream->runtime; 825 struct voice *voice = runtime->private_data; 826 void __iomem *rec_base = voice->ctrl_base; 827 u32 format, dma_addr, control; 828 u16 leo; 829 830 /* We rely on the PCM core to ensure that the parameters for this 831 * substream do not change on us while we're programming the HW. 832 */ 833 format = 0; 834 if (snd_pcm_format_width(runtime->format) == 8) 835 format = SIS_CAPTURE_DMA_FORMAT_8BIT; 836 if (!snd_pcm_format_signed(runtime->format)) 837 format |= SIS_CAPTURE_DMA_FORMAT_UNSIGNED; 838 if (runtime->channels == 1) 839 format |= SIS_CAPTURE_DMA_FORMAT_MONO; 840 841 dma_addr = runtime->dma_addr; 842 leo = runtime->buffer_size - 1; 843 control = leo | SIS_CAPTURE_DMA_LOOP; 844 845 /* If we've got more than two periods per buffer, then we have 846 * use a timing voice to clock out the periods. Otherwise, we can 847 * use the capture channel's interrupts. 848 */ 849 if (voice->timing) { 850 sis_prepare_timing_voice(voice, substream); 851 } else { 852 control |= SIS_CAPTURE_DMA_INTR_AT_LEO; 853 if (runtime->period_size != runtime->buffer_size) 854 control |= SIS_CAPTURE_DMA_INTR_AT_MLP; 855 } 856 857 writel(format, rec_base + SIS_CAPTURE_DMA_FORMAT_CSO); 858 writel(dma_addr, rec_base + SIS_CAPTURE_DMA_BASE); 859 writel(control, rec_base + SIS_CAPTURE_DMA_CONTROL); 860 861 /* Force the writes to post. */ 862 readl(rec_base); 863 864 return 0; 865 } 866 867 static struct snd_pcm_ops sis_playback_ops = { 868 .open = sis_playback_open, 869 .close = sis_substream_close, 870 .ioctl = snd_pcm_lib_ioctl, 871 .hw_params = sis_playback_hw_params, 872 .hw_free = sis_hw_free, 873 .prepare = sis_pcm_playback_prepare, 874 .trigger = sis_pcm_trigger, 875 .pointer = sis_pcm_pointer, 876 }; 877 878 static struct snd_pcm_ops sis_capture_ops = { 879 .open = sis_capture_open, 880 .close = sis_substream_close, 881 .ioctl = snd_pcm_lib_ioctl, 882 .hw_params = sis_capture_hw_params, 883 .hw_free = sis_hw_free, 884 .prepare = sis_pcm_capture_prepare, 885 .trigger = sis_pcm_trigger, 886 .pointer = sis_pcm_pointer, 887 }; 888 889 static int __devinit sis_pcm_create(struct sis7019 *sis) 890 { 891 struct snd_pcm *pcm; 892 int rc; 893 894 /* We have 64 voices, and the driver currently records from 895 * only one channel, though that could change in the future. 896 */ 897 rc = snd_pcm_new(sis->card, "SiS7019", 0, 64, 1, &pcm); 898 if (rc) 899 return rc; 900 901 pcm->private_data = sis; 902 strcpy(pcm->name, "SiS7019"); 903 sis->pcm = pcm; 904 905 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &sis_playback_ops); 906 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &sis_capture_ops); 907 908 /* Try to preallocate some memory, but it's not the end of the 909 * world if this fails. 910 */ 911 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 912 snd_dma_pci_data(sis->pci), 64*1024, 128*1024); 913 914 return 0; 915 } 916 917 static unsigned short sis_ac97_rw(struct sis7019 *sis, int codec, u32 cmd) 918 { 919 unsigned long io = sis->ioport; 920 unsigned short val = 0xffff; 921 u16 status; 922 u16 rdy; 923 int count; 924 const static u16 codec_ready[3] = { 925 SIS_AC97_STATUS_CODEC_READY, 926 SIS_AC97_STATUS_CODEC2_READY, 927 SIS_AC97_STATUS_CODEC3_READY, 928 }; 929 930 rdy = codec_ready[codec]; 931 932 933 /* Get the AC97 semaphore -- software first, so we don't spin 934 * pounding out IO reads on the hardware semaphore... 935 */ 936 mutex_lock(&sis->ac97_mutex); 937 938 count = 0xffff; 939 while ((inw(io + SIS_AC97_SEMA) & SIS_AC97_SEMA_BUSY) && --count) 940 udelay(1); 941 942 if (!count) 943 goto timeout; 944 945 /* ... and wait for any outstanding commands to complete ... 946 */ 947 count = 0xffff; 948 do { 949 status = inw(io + SIS_AC97_STATUS); 950 if ((status & rdy) && !(status & SIS_AC97_STATUS_BUSY)) 951 break; 952 953 udelay(1); 954 } while (--count); 955 956 if (!count) 957 goto timeout_sema; 958 959 /* ... before sending our command and waiting for it to finish ... 960 */ 961 outl(cmd, io + SIS_AC97_CMD); 962 udelay(10); 963 964 count = 0xffff; 965 while ((inw(io + SIS_AC97_STATUS) & SIS_AC97_STATUS_BUSY) && --count) 966 udelay(1); 967 968 /* ... and reading the results (if any). 969 */ 970 val = inl(io + SIS_AC97_CMD) >> 16; 971 972 timeout_sema: 973 outl(SIS_AC97_SEMA_RELEASE, io + SIS_AC97_SEMA); 974 timeout: 975 mutex_unlock(&sis->ac97_mutex); 976 977 if (!count) { 978 printk(KERN_ERR "sis7019: ac97 codec %d timeout cmd 0x%08x\n", 979 codec, cmd); 980 } 981 982 return val; 983 } 984 985 static void sis_ac97_write(struct snd_ac97 *ac97, unsigned short reg, 986 unsigned short val) 987 { 988 const static u32 cmd[3] = { 989 SIS_AC97_CMD_CODEC_WRITE, 990 SIS_AC97_CMD_CODEC2_WRITE, 991 SIS_AC97_CMD_CODEC3_WRITE, 992 }; 993 sis_ac97_rw(ac97->private_data, ac97->num, 994 (val << 16) | (reg << 8) | cmd[ac97->num]); 995 } 996 997 static unsigned short sis_ac97_read(struct snd_ac97 *ac97, unsigned short reg) 998 { 999 const static u32 cmd[3] = { 1000 SIS_AC97_CMD_CODEC_READ, 1001 SIS_AC97_CMD_CODEC2_READ, 1002 SIS_AC97_CMD_CODEC3_READ, 1003 }; 1004 return sis_ac97_rw(ac97->private_data, ac97->num, 1005 (reg << 8) | cmd[ac97->num]); 1006 } 1007 1008 static int __devinit sis_mixer_create(struct sis7019 *sis) 1009 { 1010 struct snd_ac97_bus *bus; 1011 struct snd_ac97_template ac97; 1012 static struct snd_ac97_bus_ops ops = { 1013 .write = sis_ac97_write, 1014 .read = sis_ac97_read, 1015 }; 1016 int rc; 1017 1018 memset(&ac97, 0, sizeof(ac97)); 1019 ac97.private_data = sis; 1020 1021 rc = snd_ac97_bus(sis->card, 0, &ops, NULL, &bus); 1022 if (!rc && sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT) 1023 rc = snd_ac97_mixer(bus, &ac97, &sis->ac97[0]); 1024 ac97.num = 1; 1025 if (!rc && (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT)) 1026 rc = snd_ac97_mixer(bus, &ac97, &sis->ac97[1]); 1027 ac97.num = 2; 1028 if (!rc && (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT)) 1029 rc = snd_ac97_mixer(bus, &ac97, &sis->ac97[2]); 1030 1031 /* If we return an error here, then snd_card_free() should 1032 * free up any ac97 codecs that got created, as well as the bus. 1033 */ 1034 return rc; 1035 } 1036 1037 static void sis_free_suspend(struct sis7019 *sis) 1038 { 1039 int i; 1040 1041 for (i = 0; i < SIS_SUSPEND_PAGES; i++) 1042 kfree(sis->suspend_state[i]); 1043 } 1044 1045 static int sis_chip_free(struct sis7019 *sis) 1046 { 1047 /* Reset the chip, and disable all interrputs. 1048 */ 1049 outl(SIS_GCR_SOFTWARE_RESET, sis->ioport + SIS_GCR); 1050 udelay(10); 1051 outl(0, sis->ioport + SIS_GCR); 1052 outl(0, sis->ioport + SIS_GIER); 1053 1054 /* Now, free everything we allocated. 1055 */ 1056 if (sis->irq >= 0) 1057 free_irq(sis->irq, sis); 1058 1059 if (sis->ioaddr) 1060 iounmap(sis->ioaddr); 1061 1062 pci_release_regions(sis->pci); 1063 pci_disable_device(sis->pci); 1064 1065 sis_free_suspend(sis); 1066 return 0; 1067 } 1068 1069 static int sis_dev_free(struct snd_device *dev) 1070 { 1071 struct sis7019 *sis = dev->device_data; 1072 return sis_chip_free(sis); 1073 } 1074 1075 static int sis_chip_init(struct sis7019 *sis) 1076 { 1077 unsigned long io = sis->ioport; 1078 void __iomem *ioaddr = sis->ioaddr; 1079 u16 status; 1080 int count; 1081 int i; 1082 1083 /* Reset the audio controller 1084 */ 1085 outl(SIS_GCR_SOFTWARE_RESET, io + SIS_GCR); 1086 udelay(10); 1087 outl(0, io + SIS_GCR); 1088 1089 /* Get the AC-link semaphore, and reset the codecs 1090 */ 1091 count = 0xffff; 1092 while ((inw(io + SIS_AC97_SEMA) & SIS_AC97_SEMA_BUSY) && --count) 1093 udelay(1); 1094 1095 if (!count) 1096 return -EIO; 1097 1098 outl(SIS_AC97_CMD_CODEC_COLD_RESET, io + SIS_AC97_CMD); 1099 udelay(10); 1100 1101 count = 0xffff; 1102 while ((inw(io + SIS_AC97_STATUS) & SIS_AC97_STATUS_BUSY) && --count) 1103 udelay(1); 1104 1105 /* Now that we've finished the reset, find out what's attached. 1106 */ 1107 status = inl(io + SIS_AC97_STATUS); 1108 if (status & SIS_AC97_STATUS_CODEC_READY) 1109 sis->codecs_present |= SIS_PRIMARY_CODEC_PRESENT; 1110 if (status & SIS_AC97_STATUS_CODEC2_READY) 1111 sis->codecs_present |= SIS_SECONDARY_CODEC_PRESENT; 1112 if (status & SIS_AC97_STATUS_CODEC3_READY) 1113 sis->codecs_present |= SIS_TERTIARY_CODEC_PRESENT; 1114 1115 /* All done, let go of the semaphore, and check for errors 1116 */ 1117 outl(SIS_AC97_SEMA_RELEASE, io + SIS_AC97_SEMA); 1118 if (!sis->codecs_present || !count) 1119 return -EIO; 1120 1121 /* Let the hardware know that the audio driver is alive, 1122 * and enable PCM slots on the AC-link for L/R playback (3 & 4) and 1123 * record channels. We're going to want to use Variable Rate Audio 1124 * for recording, to avoid needlessly resampling from 48kHZ. 1125 */ 1126 outl(SIS_AC97_CONF_AUDIO_ALIVE, io + SIS_AC97_CONF); 1127 outl(SIS_AC97_CONF_AUDIO_ALIVE | SIS_AC97_CONF_PCM_LR_ENABLE | 1128 SIS_AC97_CONF_PCM_CAP_MIC_ENABLE | 1129 SIS_AC97_CONF_PCM_CAP_LR_ENABLE | 1130 SIS_AC97_CONF_CODEC_VRA_ENABLE, io + SIS_AC97_CONF); 1131 1132 /* All AC97 PCM slots should be sourced from sub-mixer 0. 1133 */ 1134 outl(0, io + SIS_AC97_PSR); 1135 1136 /* There is only one valid DMA setup for a PCI environment. 1137 */ 1138 outl(SIS_DMA_CSR_PCI_SETTINGS, io + SIS_DMA_CSR); 1139 1140 /* Reset the syncronization groups for all of the channels 1141 * to be asyncronous. If we start doing SPDIF or 5.1 sound, etc. 1142 * we'll need to change how we handle these. Until then, we just 1143 * assign sub-mixer 0 to all playback channels, and avoid any 1144 * attenuation on the audio. 1145 */ 1146 outl(0, io + SIS_PLAY_SYNC_GROUP_A); 1147 outl(0, io + SIS_PLAY_SYNC_GROUP_B); 1148 outl(0, io + SIS_PLAY_SYNC_GROUP_C); 1149 outl(0, io + SIS_PLAY_SYNC_GROUP_D); 1150 outl(0, io + SIS_MIXER_SYNC_GROUP); 1151 1152 for (i = 0; i < 64; i++) { 1153 writel(i, SIS_MIXER_START_ADDR(ioaddr, i)); 1154 writel(SIS_MIXER_RIGHT_NO_ATTEN | SIS_MIXER_LEFT_NO_ATTEN | 1155 SIS_MIXER_DEST_0, SIS_MIXER_ADDR(ioaddr, i)); 1156 } 1157 1158 /* Don't attenuate any audio set for the wave amplifier. 1159 * 1160 * FIXME: Maximum attenuation is set for the music amp, which will 1161 * need to change if we start using the synth engine. 1162 */ 1163 outl(0xffff0000, io + SIS_WEVCR); 1164 1165 /* Ensure that the wave engine is in normal operating mode. 1166 */ 1167 outl(0, io + SIS_WECCR); 1168 1169 /* Go ahead and enable the DMA interrupts. They won't go live 1170 * until we start a channel. 1171 */ 1172 outl(SIS_GIER_AUDIO_PLAY_DMA_IRQ_ENABLE | 1173 SIS_GIER_AUDIO_RECORD_DMA_IRQ_ENABLE, io + SIS_GIER); 1174 1175 return 0; 1176 } 1177 1178 #ifdef CONFIG_PM 1179 static int sis_suspend(struct pci_dev *pci, pm_message_t state) 1180 { 1181 struct snd_card *card = pci_get_drvdata(pci); 1182 struct sis7019 *sis = card->private_data; 1183 void __iomem *ioaddr = sis->ioaddr; 1184 int i; 1185 1186 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1187 snd_pcm_suspend_all(sis->pcm); 1188 if (sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT) 1189 snd_ac97_suspend(sis->ac97[0]); 1190 if (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT) 1191 snd_ac97_suspend(sis->ac97[1]); 1192 if (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT) 1193 snd_ac97_suspend(sis->ac97[2]); 1194 1195 /* snd_pcm_suspend_all() stopped all channels, so we're quiescent. 1196 */ 1197 if (sis->irq >= 0) { 1198 synchronize_irq(sis->irq); 1199 free_irq(sis->irq, sis); 1200 sis->irq = -1; 1201 } 1202 1203 /* Save the internal state away 1204 */ 1205 for (i = 0; i < 4; i++) { 1206 memcpy_fromio(sis->suspend_state[i], ioaddr, 4096); 1207 ioaddr += 4096; 1208 } 1209 1210 pci_disable_device(pci); 1211 pci_save_state(pci); 1212 pci_set_power_state(pci, pci_choose_state(pci, state)); 1213 return 0; 1214 } 1215 1216 static int sis_resume(struct pci_dev *pci) 1217 { 1218 struct snd_card *card = pci_get_drvdata(pci); 1219 struct sis7019 *sis = card->private_data; 1220 void __iomem *ioaddr = sis->ioaddr; 1221 int i; 1222 1223 pci_set_power_state(pci, PCI_D0); 1224 pci_restore_state(pci); 1225 1226 if (pci_enable_device(pci) < 0) { 1227 printk(KERN_ERR "sis7019: unable to re-enable device\n"); 1228 goto error; 1229 } 1230 1231 if (sis_chip_init(sis)) { 1232 printk(KERN_ERR "sis7019: unable to re-init controller\n"); 1233 goto error; 1234 } 1235 1236 if (request_irq(pci->irq, sis_interrupt, IRQF_DISABLED|IRQF_SHARED, 1237 card->shortname, sis)) { 1238 printk(KERN_ERR "sis7019: unable to regain IRQ %d\n", pci->irq); 1239 goto error; 1240 } 1241 1242 /* Restore saved state, then clear out the page we use for the 1243 * silence buffer. 1244 */ 1245 for (i = 0; i < 4; i++) { 1246 memcpy_toio(ioaddr, sis->suspend_state[i], 4096); 1247 ioaddr += 4096; 1248 } 1249 1250 memset(sis->suspend_state[0], 0, 4096); 1251 1252 sis->irq = pci->irq; 1253 pci_set_master(pci); 1254 1255 if (sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT) 1256 snd_ac97_resume(sis->ac97[0]); 1257 if (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT) 1258 snd_ac97_resume(sis->ac97[1]); 1259 if (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT) 1260 snd_ac97_resume(sis->ac97[2]); 1261 1262 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1263 return 0; 1264 1265 error: 1266 snd_card_disconnect(card); 1267 return -EIO; 1268 } 1269 #endif /* CONFIG_PM */ 1270 1271 static int sis_alloc_suspend(struct sis7019 *sis) 1272 { 1273 int i; 1274 1275 /* We need 16K to store the internal wave engine state during a 1276 * suspend, but we don't need it to be contiguous, so play nice 1277 * with the memory system. We'll also use this area for a silence 1278 * buffer. 1279 */ 1280 for (i = 0; i < SIS_SUSPEND_PAGES; i++) { 1281 sis->suspend_state[i] = kmalloc(4096, GFP_KERNEL); 1282 if (!sis->suspend_state[i]) 1283 return -ENOMEM; 1284 } 1285 memset(sis->suspend_state[0], 0, 4096); 1286 1287 return 0; 1288 } 1289 1290 static int __devinit sis_chip_create(struct snd_card *card, 1291 struct pci_dev *pci) 1292 { 1293 struct sis7019 *sis = card->private_data; 1294 struct voice *voice; 1295 static struct snd_device_ops ops = { 1296 .dev_free = sis_dev_free, 1297 }; 1298 int rc; 1299 int i; 1300 1301 rc = pci_enable_device(pci); 1302 if (rc) 1303 goto error_out; 1304 1305 if (pci_set_dma_mask(pci, DMA_30BIT_MASK) < 0) { 1306 printk(KERN_ERR "sis7019: architecture does not support " 1307 "30-bit PCI busmaster DMA"); 1308 goto error_out_enabled; 1309 } 1310 1311 memset(sis, 0, sizeof(*sis)); 1312 mutex_init(&sis->ac97_mutex); 1313 spin_lock_init(&sis->voice_lock); 1314 sis->card = card; 1315 sis->pci = pci; 1316 sis->irq = -1; 1317 sis->ioport = pci_resource_start(pci, 0); 1318 1319 rc = pci_request_regions(pci, "SiS7019"); 1320 if (rc) { 1321 printk(KERN_ERR "sis7019: unable request regions\n"); 1322 goto error_out_enabled; 1323 } 1324 1325 rc = -EIO; 1326 sis->ioaddr = ioremap_nocache(pci_resource_start(pci, 1), 0x4000); 1327 if (!sis->ioaddr) { 1328 printk(KERN_ERR "sis7019: unable to remap MMIO, aborting\n"); 1329 goto error_out_cleanup; 1330 } 1331 1332 rc = sis_alloc_suspend(sis); 1333 if (rc < 0) { 1334 printk(KERN_ERR "sis7019: unable to allocate state storage\n"); 1335 goto error_out_cleanup; 1336 } 1337 1338 rc = sis_chip_init(sis); 1339 if (rc) 1340 goto error_out_cleanup; 1341 1342 if (request_irq(pci->irq, sis_interrupt, IRQF_DISABLED|IRQF_SHARED, 1343 card->shortname, sis)) { 1344 printk(KERN_ERR "unable to allocate irq %d\n", sis->irq); 1345 goto error_out_cleanup; 1346 } 1347 1348 sis->irq = pci->irq; 1349 pci_set_master(pci); 1350 1351 for (i = 0; i < 64; i++) { 1352 voice = &sis->voices[i]; 1353 voice->num = i; 1354 voice->ctrl_base = SIS_PLAY_DMA_ADDR(sis->ioaddr, i); 1355 voice->wave_base = SIS_WAVE_ADDR(sis->ioaddr, i); 1356 } 1357 1358 voice = &sis->capture_voice; 1359 voice->flags = VOICE_CAPTURE; 1360 voice->num = SIS_CAPTURE_CHAN_AC97_PCM_IN; 1361 voice->ctrl_base = SIS_CAPTURE_DMA_ADDR(sis->ioaddr, voice->num); 1362 1363 rc = snd_device_new(card, SNDRV_DEV_LOWLEVEL, sis, &ops); 1364 if (rc) 1365 goto error_out_cleanup; 1366 1367 snd_card_set_dev(card, &pci->dev); 1368 1369 return 0; 1370 1371 error_out_cleanup: 1372 sis_chip_free(sis); 1373 1374 error_out_enabled: 1375 pci_disable_device(pci); 1376 1377 error_out: 1378 return rc; 1379 } 1380 1381 static int __devinit snd_sis7019_probe(struct pci_dev *pci, 1382 const struct pci_device_id *pci_id) 1383 { 1384 struct snd_card *card; 1385 struct sis7019 *sis; 1386 int rc; 1387 1388 rc = -ENOENT; 1389 if (!enable) 1390 goto error_out; 1391 1392 rc = -ENOMEM; 1393 card = snd_card_new(index, id, THIS_MODULE, sizeof(*sis)); 1394 if (!card) 1395 goto error_out; 1396 1397 strcpy(card->driver, "SiS7019"); 1398 strcpy(card->shortname, "SiS7019"); 1399 rc = sis_chip_create(card, pci); 1400 if (rc) 1401 goto card_error_out; 1402 1403 sis = card->private_data; 1404 1405 rc = sis_mixer_create(sis); 1406 if (rc) 1407 goto card_error_out; 1408 1409 rc = sis_pcm_create(sis); 1410 if (rc) 1411 goto card_error_out; 1412 1413 snprintf(card->longname, sizeof(card->longname), 1414 "%s Audio Accelerator with %s at 0x%lx, irq %d", 1415 card->shortname, snd_ac97_get_short_name(sis->ac97[0]), 1416 sis->ioport, sis->irq); 1417 1418 rc = snd_card_register(card); 1419 if (rc) 1420 goto card_error_out; 1421 1422 pci_set_drvdata(pci, card); 1423 return 0; 1424 1425 card_error_out: 1426 snd_card_free(card); 1427 1428 error_out: 1429 return rc; 1430 } 1431 1432 static void __devexit snd_sis7019_remove(struct pci_dev *pci) 1433 { 1434 snd_card_free(pci_get_drvdata(pci)); 1435 pci_set_drvdata(pci, NULL); 1436 } 1437 1438 static struct pci_driver sis7019_driver = { 1439 .name = "SiS7019", 1440 .id_table = snd_sis7019_ids, 1441 .probe = snd_sis7019_probe, 1442 .remove = __devexit_p(snd_sis7019_remove), 1443 1444 #ifdef CONFIG_PM 1445 .suspend = sis_suspend, 1446 .resume = sis_resume, 1447 #endif 1448 }; 1449 1450 static int __init sis7019_init(void) 1451 { 1452 return pci_register_driver(&sis7019_driver); 1453 } 1454 1455 static void __exit sis7019_exit(void) 1456 { 1457 pci_unregister_driver(&sis7019_driver); 1458 } 1459 1460 module_init(sis7019_init); 1461 module_exit(sis7019_exit); 1462