1 /* Analog Devices 1889 audio driver 2 * 3 * This is a driver for the AD1889 PCI audio chipset found 4 * on the HP PA-RISC [BCJ]-xxx0 workstations. 5 * 6 * Copyright (C) 2004-2005, Kyle McMartin <kyle@parisc-linux.org> 7 * Copyright (C) 2005, Thibaut Varene <varenet@parisc-linux.org> 8 * Based on the OSS AD1889 driver by Randolph Chung <tausq@debian.org> 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, version 2, as 12 * published by the Free Software Foundation. 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., 675 Mass Ave, Cambridge, MA 02139, USA. 22 * 23 * TODO: 24 * Do we need to take care of CCS register? 25 * Maybe we could use finer grained locking (separate locks for pb/cap)? 26 * Wishlist: 27 * Control Interface (mixer) support 28 * Better AC97 support (VSR...)? 29 * PM support 30 * MIDI support 31 * Game Port support 32 * SG DMA support (this will need *a lot* of work) 33 */ 34 35 #include <linux/init.h> 36 #include <linux/pci.h> 37 #include <linux/dma-mapping.h> 38 #include <linux/slab.h> 39 #include <linux/interrupt.h> 40 #include <linux/compiler.h> 41 #include <linux/delay.h> 42 #include <linux/module.h> 43 #include <linux/io.h> 44 45 #include <sound/core.h> 46 #include <sound/pcm.h> 47 #include <sound/initval.h> 48 #include <sound/ac97_codec.h> 49 50 #include "ad1889.h" 51 #include "ac97/ac97_id.h" 52 53 #define AD1889_DRVVER "Version: 1.7" 54 55 MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>, Thibaut Varene <t-bone@parisc-linux.org>"); 56 MODULE_DESCRIPTION("Analog Devices AD1889 ALSA sound driver"); 57 MODULE_LICENSE("GPL"); 58 MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1889}}"); 59 60 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; 61 module_param_array(index, int, NULL, 0444); 62 MODULE_PARM_DESC(index, "Index value for the AD1889 soundcard."); 63 64 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; 65 module_param_array(id, charp, NULL, 0444); 66 MODULE_PARM_DESC(id, "ID string for the AD1889 soundcard."); 67 68 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; 69 module_param_array(enable, bool, NULL, 0444); 70 MODULE_PARM_DESC(enable, "Enable AD1889 soundcard."); 71 72 static char *ac97_quirk[SNDRV_CARDS]; 73 module_param_array(ac97_quirk, charp, NULL, 0444); 74 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware."); 75 76 #define DEVNAME "ad1889" 77 #define PFX DEVNAME ": " 78 79 /* keep track of some hw registers */ 80 struct ad1889_register_state { 81 u16 reg; /* reg setup */ 82 u32 addr; /* dma base address */ 83 unsigned long size; /* DMA buffer size */ 84 }; 85 86 struct snd_ad1889 { 87 struct snd_card *card; 88 struct pci_dev *pci; 89 90 int irq; 91 unsigned long bar; 92 void __iomem *iobase; 93 94 struct snd_ac97 *ac97; 95 struct snd_ac97_bus *ac97_bus; 96 struct snd_pcm *pcm; 97 struct snd_info_entry *proc; 98 99 struct snd_pcm_substream *psubs; 100 struct snd_pcm_substream *csubs; 101 102 /* playback register state */ 103 struct ad1889_register_state wave; 104 struct ad1889_register_state ramc; 105 106 spinlock_t lock; 107 }; 108 109 static inline u16 110 ad1889_readw(struct snd_ad1889 *chip, unsigned reg) 111 { 112 return readw(chip->iobase + reg); 113 } 114 115 static inline void 116 ad1889_writew(struct snd_ad1889 *chip, unsigned reg, u16 val) 117 { 118 writew(val, chip->iobase + reg); 119 } 120 121 static inline u32 122 ad1889_readl(struct snd_ad1889 *chip, unsigned reg) 123 { 124 return readl(chip->iobase + reg); 125 } 126 127 static inline void 128 ad1889_writel(struct snd_ad1889 *chip, unsigned reg, u32 val) 129 { 130 writel(val, chip->iobase + reg); 131 } 132 133 static inline void 134 ad1889_unmute(struct snd_ad1889 *chip) 135 { 136 u16 st; 137 st = ad1889_readw(chip, AD_DS_WADA) & 138 ~(AD_DS_WADA_RWAM | AD_DS_WADA_LWAM); 139 ad1889_writew(chip, AD_DS_WADA, st); 140 ad1889_readw(chip, AD_DS_WADA); 141 } 142 143 static inline void 144 ad1889_mute(struct snd_ad1889 *chip) 145 { 146 u16 st; 147 st = ad1889_readw(chip, AD_DS_WADA) | AD_DS_WADA_RWAM | AD_DS_WADA_LWAM; 148 ad1889_writew(chip, AD_DS_WADA, st); 149 ad1889_readw(chip, AD_DS_WADA); 150 } 151 152 static inline void 153 ad1889_load_adc_buffer_address(struct snd_ad1889 *chip, u32 address) 154 { 155 ad1889_writel(chip, AD_DMA_ADCBA, address); 156 ad1889_writel(chip, AD_DMA_ADCCA, address); 157 } 158 159 static inline void 160 ad1889_load_adc_buffer_count(struct snd_ad1889 *chip, u32 count) 161 { 162 ad1889_writel(chip, AD_DMA_ADCBC, count); 163 ad1889_writel(chip, AD_DMA_ADCCC, count); 164 } 165 166 static inline void 167 ad1889_load_adc_interrupt_count(struct snd_ad1889 *chip, u32 count) 168 { 169 ad1889_writel(chip, AD_DMA_ADCIB, count); 170 ad1889_writel(chip, AD_DMA_ADCIC, count); 171 } 172 173 static inline void 174 ad1889_load_wave_buffer_address(struct snd_ad1889 *chip, u32 address) 175 { 176 ad1889_writel(chip, AD_DMA_WAVBA, address); 177 ad1889_writel(chip, AD_DMA_WAVCA, address); 178 } 179 180 static inline void 181 ad1889_load_wave_buffer_count(struct snd_ad1889 *chip, u32 count) 182 { 183 ad1889_writel(chip, AD_DMA_WAVBC, count); 184 ad1889_writel(chip, AD_DMA_WAVCC, count); 185 } 186 187 static inline void 188 ad1889_load_wave_interrupt_count(struct snd_ad1889 *chip, u32 count) 189 { 190 ad1889_writel(chip, AD_DMA_WAVIB, count); 191 ad1889_writel(chip, AD_DMA_WAVIC, count); 192 } 193 194 static void 195 ad1889_channel_reset(struct snd_ad1889 *chip, unsigned int channel) 196 { 197 u16 reg; 198 199 if (channel & AD_CHAN_WAV) { 200 /* Disable wave channel */ 201 reg = ad1889_readw(chip, AD_DS_WSMC) & ~AD_DS_WSMC_WAEN; 202 ad1889_writew(chip, AD_DS_WSMC, reg); 203 chip->wave.reg = reg; 204 205 /* disable IRQs */ 206 reg = ad1889_readw(chip, AD_DMA_WAV); 207 reg &= AD_DMA_IM_DIS; 208 reg &= ~AD_DMA_LOOP; 209 ad1889_writew(chip, AD_DMA_WAV, reg); 210 211 /* clear IRQ and address counters and pointers */ 212 ad1889_load_wave_buffer_address(chip, 0x0); 213 ad1889_load_wave_buffer_count(chip, 0x0); 214 ad1889_load_wave_interrupt_count(chip, 0x0); 215 216 /* flush */ 217 ad1889_readw(chip, AD_DMA_WAV); 218 } 219 220 if (channel & AD_CHAN_ADC) { 221 /* Disable ADC channel */ 222 reg = ad1889_readw(chip, AD_DS_RAMC) & ~AD_DS_RAMC_ADEN; 223 ad1889_writew(chip, AD_DS_RAMC, reg); 224 chip->ramc.reg = reg; 225 226 reg = ad1889_readw(chip, AD_DMA_ADC); 227 reg &= AD_DMA_IM_DIS; 228 reg &= ~AD_DMA_LOOP; 229 ad1889_writew(chip, AD_DMA_ADC, reg); 230 231 ad1889_load_adc_buffer_address(chip, 0x0); 232 ad1889_load_adc_buffer_count(chip, 0x0); 233 ad1889_load_adc_interrupt_count(chip, 0x0); 234 235 /* flush */ 236 ad1889_readw(chip, AD_DMA_ADC); 237 } 238 } 239 240 static u16 241 snd_ad1889_ac97_read(struct snd_ac97 *ac97, unsigned short reg) 242 { 243 struct snd_ad1889 *chip = ac97->private_data; 244 return ad1889_readw(chip, AD_AC97_BASE + reg); 245 } 246 247 static void 248 snd_ad1889_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) 249 { 250 struct snd_ad1889 *chip = ac97->private_data; 251 ad1889_writew(chip, AD_AC97_BASE + reg, val); 252 } 253 254 static int 255 snd_ad1889_ac97_ready(struct snd_ad1889 *chip) 256 { 257 int retry = 400; /* average needs 352 msec */ 258 259 while (!(ad1889_readw(chip, AD_AC97_ACIC) & AD_AC97_ACIC_ACRDY) 260 && --retry) 261 mdelay(1); 262 if (!retry) { 263 dev_err(chip->card->dev, "[%s] Link is not ready.\n", 264 __func__); 265 return -EIO; 266 } 267 dev_dbg(chip->card->dev, "[%s] ready after %d ms\n", __func__, 400 - retry); 268 269 return 0; 270 } 271 272 static int 273 snd_ad1889_hw_params(struct snd_pcm_substream *substream, 274 struct snd_pcm_hw_params *hw_params) 275 { 276 return snd_pcm_lib_malloc_pages(substream, 277 params_buffer_bytes(hw_params)); 278 } 279 280 static int 281 snd_ad1889_hw_free(struct snd_pcm_substream *substream) 282 { 283 return snd_pcm_lib_free_pages(substream); 284 } 285 286 static const struct snd_pcm_hardware snd_ad1889_playback_hw = { 287 .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 288 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER, 289 .formats = SNDRV_PCM_FMTBIT_S16_LE, 290 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 291 .rate_min = 8000, /* docs say 7000, but we're lazy */ 292 .rate_max = 48000, 293 .channels_min = 1, 294 .channels_max = 2, 295 .buffer_bytes_max = BUFFER_BYTES_MAX, 296 .period_bytes_min = PERIOD_BYTES_MIN, 297 .period_bytes_max = PERIOD_BYTES_MAX, 298 .periods_min = PERIODS_MIN, 299 .periods_max = PERIODS_MAX, 300 /*.fifo_size = 0,*/ 301 }; 302 303 static const struct snd_pcm_hardware snd_ad1889_capture_hw = { 304 .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 305 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER, 306 .formats = SNDRV_PCM_FMTBIT_S16_LE, 307 .rates = SNDRV_PCM_RATE_48000, 308 .rate_min = 48000, /* docs say we could to VSR, but we're lazy */ 309 .rate_max = 48000, 310 .channels_min = 1, 311 .channels_max = 2, 312 .buffer_bytes_max = BUFFER_BYTES_MAX, 313 .period_bytes_min = PERIOD_BYTES_MIN, 314 .period_bytes_max = PERIOD_BYTES_MAX, 315 .periods_min = PERIODS_MIN, 316 .periods_max = PERIODS_MAX, 317 /*.fifo_size = 0,*/ 318 }; 319 320 static int 321 snd_ad1889_playback_open(struct snd_pcm_substream *ss) 322 { 323 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 324 struct snd_pcm_runtime *rt = ss->runtime; 325 326 chip->psubs = ss; 327 rt->hw = snd_ad1889_playback_hw; 328 329 return 0; 330 } 331 332 static int 333 snd_ad1889_capture_open(struct snd_pcm_substream *ss) 334 { 335 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 336 struct snd_pcm_runtime *rt = ss->runtime; 337 338 chip->csubs = ss; 339 rt->hw = snd_ad1889_capture_hw; 340 341 return 0; 342 } 343 344 static int 345 snd_ad1889_playback_close(struct snd_pcm_substream *ss) 346 { 347 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 348 chip->psubs = NULL; 349 return 0; 350 } 351 352 static int 353 snd_ad1889_capture_close(struct snd_pcm_substream *ss) 354 { 355 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 356 chip->csubs = NULL; 357 return 0; 358 } 359 360 static int 361 snd_ad1889_playback_prepare(struct snd_pcm_substream *ss) 362 { 363 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 364 struct snd_pcm_runtime *rt = ss->runtime; 365 unsigned int size = snd_pcm_lib_buffer_bytes(ss); 366 unsigned int count = snd_pcm_lib_period_bytes(ss); 367 u16 reg; 368 369 ad1889_channel_reset(chip, AD_CHAN_WAV); 370 371 reg = ad1889_readw(chip, AD_DS_WSMC); 372 373 /* Mask out 16-bit / Stereo */ 374 reg &= ~(AD_DS_WSMC_WA16 | AD_DS_WSMC_WAST); 375 376 if (snd_pcm_format_width(rt->format) == 16) 377 reg |= AD_DS_WSMC_WA16; 378 379 if (rt->channels > 1) 380 reg |= AD_DS_WSMC_WAST; 381 382 /* let's make sure we don't clobber ourselves */ 383 spin_lock_irq(&chip->lock); 384 385 chip->wave.size = size; 386 chip->wave.reg = reg; 387 chip->wave.addr = rt->dma_addr; 388 389 ad1889_writew(chip, AD_DS_WSMC, chip->wave.reg); 390 391 /* Set sample rates on the codec */ 392 ad1889_writew(chip, AD_DS_WAS, rt->rate); 393 394 /* Set up DMA */ 395 ad1889_load_wave_buffer_address(chip, chip->wave.addr); 396 ad1889_load_wave_buffer_count(chip, size); 397 ad1889_load_wave_interrupt_count(chip, count); 398 399 /* writes flush */ 400 ad1889_readw(chip, AD_DS_WSMC); 401 402 spin_unlock_irq(&chip->lock); 403 404 dev_dbg(chip->card->dev, 405 "prepare playback: addr = 0x%x, count = %u, size = %u, reg = 0x%x, rate = %u\n", 406 chip->wave.addr, count, size, reg, rt->rate); 407 return 0; 408 } 409 410 static int 411 snd_ad1889_capture_prepare(struct snd_pcm_substream *ss) 412 { 413 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 414 struct snd_pcm_runtime *rt = ss->runtime; 415 unsigned int size = snd_pcm_lib_buffer_bytes(ss); 416 unsigned int count = snd_pcm_lib_period_bytes(ss); 417 u16 reg; 418 419 ad1889_channel_reset(chip, AD_CHAN_ADC); 420 421 reg = ad1889_readw(chip, AD_DS_RAMC); 422 423 /* Mask out 16-bit / Stereo */ 424 reg &= ~(AD_DS_RAMC_AD16 | AD_DS_RAMC_ADST); 425 426 if (snd_pcm_format_width(rt->format) == 16) 427 reg |= AD_DS_RAMC_AD16; 428 429 if (rt->channels > 1) 430 reg |= AD_DS_RAMC_ADST; 431 432 /* let's make sure we don't clobber ourselves */ 433 spin_lock_irq(&chip->lock); 434 435 chip->ramc.size = size; 436 chip->ramc.reg = reg; 437 chip->ramc.addr = rt->dma_addr; 438 439 ad1889_writew(chip, AD_DS_RAMC, chip->ramc.reg); 440 441 /* Set up DMA */ 442 ad1889_load_adc_buffer_address(chip, chip->ramc.addr); 443 ad1889_load_adc_buffer_count(chip, size); 444 ad1889_load_adc_interrupt_count(chip, count); 445 446 /* writes flush */ 447 ad1889_readw(chip, AD_DS_RAMC); 448 449 spin_unlock_irq(&chip->lock); 450 451 dev_dbg(chip->card->dev, 452 "prepare capture: addr = 0x%x, count = %u, size = %u, reg = 0x%x, rate = %u\n", 453 chip->ramc.addr, count, size, reg, rt->rate); 454 return 0; 455 } 456 457 /* this is called in atomic context with IRQ disabled. 458 Must be as fast as possible and not sleep. 459 DMA should be *triggered* by this call. 460 The WSMC "WAEN" bit triggers DMA Wave On/Off */ 461 static int 462 snd_ad1889_playback_trigger(struct snd_pcm_substream *ss, int cmd) 463 { 464 u16 wsmc; 465 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 466 467 wsmc = ad1889_readw(chip, AD_DS_WSMC); 468 469 switch (cmd) { 470 case SNDRV_PCM_TRIGGER_START: 471 /* enable DMA loop & interrupts */ 472 ad1889_writew(chip, AD_DMA_WAV, AD_DMA_LOOP | AD_DMA_IM_CNT); 473 wsmc |= AD_DS_WSMC_WAEN; 474 /* 1 to clear CHSS bit */ 475 ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_WAVS); 476 ad1889_unmute(chip); 477 break; 478 case SNDRV_PCM_TRIGGER_STOP: 479 ad1889_mute(chip); 480 wsmc &= ~AD_DS_WSMC_WAEN; 481 break; 482 default: 483 snd_BUG(); 484 return -EINVAL; 485 } 486 487 chip->wave.reg = wsmc; 488 ad1889_writew(chip, AD_DS_WSMC, wsmc); 489 ad1889_readw(chip, AD_DS_WSMC); /* flush */ 490 491 /* reset the chip when STOP - will disable IRQs */ 492 if (cmd == SNDRV_PCM_TRIGGER_STOP) 493 ad1889_channel_reset(chip, AD_CHAN_WAV); 494 495 return 0; 496 } 497 498 /* this is called in atomic context with IRQ disabled. 499 Must be as fast as possible and not sleep. 500 DMA should be *triggered* by this call. 501 The RAMC "ADEN" bit triggers DMA ADC On/Off */ 502 static int 503 snd_ad1889_capture_trigger(struct snd_pcm_substream *ss, int cmd) 504 { 505 u16 ramc; 506 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 507 508 ramc = ad1889_readw(chip, AD_DS_RAMC); 509 510 switch (cmd) { 511 case SNDRV_PCM_TRIGGER_START: 512 /* enable DMA loop & interrupts */ 513 ad1889_writew(chip, AD_DMA_ADC, AD_DMA_LOOP | AD_DMA_IM_CNT); 514 ramc |= AD_DS_RAMC_ADEN; 515 /* 1 to clear CHSS bit */ 516 ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_ADCS); 517 break; 518 case SNDRV_PCM_TRIGGER_STOP: 519 ramc &= ~AD_DS_RAMC_ADEN; 520 break; 521 default: 522 return -EINVAL; 523 } 524 525 chip->ramc.reg = ramc; 526 ad1889_writew(chip, AD_DS_RAMC, ramc); 527 ad1889_readw(chip, AD_DS_RAMC); /* flush */ 528 529 /* reset the chip when STOP - will disable IRQs */ 530 if (cmd == SNDRV_PCM_TRIGGER_STOP) 531 ad1889_channel_reset(chip, AD_CHAN_ADC); 532 533 return 0; 534 } 535 536 /* Called in atomic context with IRQ disabled */ 537 static snd_pcm_uframes_t 538 snd_ad1889_playback_pointer(struct snd_pcm_substream *ss) 539 { 540 size_t ptr = 0; 541 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 542 543 if (unlikely(!(chip->wave.reg & AD_DS_WSMC_WAEN))) 544 return 0; 545 546 ptr = ad1889_readl(chip, AD_DMA_WAVCA); 547 ptr -= chip->wave.addr; 548 549 if (snd_BUG_ON(ptr >= chip->wave.size)) 550 return 0; 551 552 return bytes_to_frames(ss->runtime, ptr); 553 } 554 555 /* Called in atomic context with IRQ disabled */ 556 static snd_pcm_uframes_t 557 snd_ad1889_capture_pointer(struct snd_pcm_substream *ss) 558 { 559 size_t ptr = 0; 560 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss); 561 562 if (unlikely(!(chip->ramc.reg & AD_DS_RAMC_ADEN))) 563 return 0; 564 565 ptr = ad1889_readl(chip, AD_DMA_ADCCA); 566 ptr -= chip->ramc.addr; 567 568 if (snd_BUG_ON(ptr >= chip->ramc.size)) 569 return 0; 570 571 return bytes_to_frames(ss->runtime, ptr); 572 } 573 574 static const struct snd_pcm_ops snd_ad1889_playback_ops = { 575 .open = snd_ad1889_playback_open, 576 .close = snd_ad1889_playback_close, 577 .ioctl = snd_pcm_lib_ioctl, 578 .hw_params = snd_ad1889_hw_params, 579 .hw_free = snd_ad1889_hw_free, 580 .prepare = snd_ad1889_playback_prepare, 581 .trigger = snd_ad1889_playback_trigger, 582 .pointer = snd_ad1889_playback_pointer, 583 }; 584 585 static const struct snd_pcm_ops snd_ad1889_capture_ops = { 586 .open = snd_ad1889_capture_open, 587 .close = snd_ad1889_capture_close, 588 .ioctl = snd_pcm_lib_ioctl, 589 .hw_params = snd_ad1889_hw_params, 590 .hw_free = snd_ad1889_hw_free, 591 .prepare = snd_ad1889_capture_prepare, 592 .trigger = snd_ad1889_capture_trigger, 593 .pointer = snd_ad1889_capture_pointer, 594 }; 595 596 static irqreturn_t 597 snd_ad1889_interrupt(int irq, void *dev_id) 598 { 599 unsigned long st; 600 struct snd_ad1889 *chip = dev_id; 601 602 st = ad1889_readl(chip, AD_DMA_DISR); 603 604 /* clear ISR */ 605 ad1889_writel(chip, AD_DMA_DISR, st); 606 607 st &= AD_INTR_MASK; 608 609 if (unlikely(!st)) 610 return IRQ_NONE; 611 612 if (st & (AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI)) 613 dev_dbg(chip->card->dev, 614 "Unexpected master or target abort interrupt!\n"); 615 616 if ((st & AD_DMA_DISR_WAVI) && chip->psubs) 617 snd_pcm_period_elapsed(chip->psubs); 618 if ((st & AD_DMA_DISR_ADCI) && chip->csubs) 619 snd_pcm_period_elapsed(chip->csubs); 620 621 return IRQ_HANDLED; 622 } 623 624 static int 625 snd_ad1889_pcm_init(struct snd_ad1889 *chip, int device) 626 { 627 int err; 628 struct snd_pcm *pcm; 629 630 err = snd_pcm_new(chip->card, chip->card->driver, device, 1, 1, &pcm); 631 if (err < 0) 632 return err; 633 634 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, 635 &snd_ad1889_playback_ops); 636 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, 637 &snd_ad1889_capture_ops); 638 639 pcm->private_data = chip; 640 pcm->info_flags = 0; 641 strcpy(pcm->name, chip->card->shortname); 642 643 chip->pcm = pcm; 644 chip->psubs = NULL; 645 chip->csubs = NULL; 646 647 err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 648 snd_dma_pci_data(chip->pci), 649 BUFFER_BYTES_MAX / 2, 650 BUFFER_BYTES_MAX); 651 652 if (err < 0) { 653 dev_err(chip->card->dev, "buffer allocation error: %d\n", err); 654 return err; 655 } 656 657 return 0; 658 } 659 660 static void 661 snd_ad1889_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 662 { 663 struct snd_ad1889 *chip = entry->private_data; 664 u16 reg; 665 int tmp; 666 667 reg = ad1889_readw(chip, AD_DS_WSMC); 668 snd_iprintf(buffer, "Wave output: %s\n", 669 (reg & AD_DS_WSMC_WAEN) ? "enabled" : "disabled"); 670 snd_iprintf(buffer, "Wave Channels: %s\n", 671 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono"); 672 snd_iprintf(buffer, "Wave Quality: %d-bit linear\n", 673 (reg & AD_DS_WSMC_WA16) ? 16 : 8); 674 675 /* WARQ is at offset 12 */ 676 tmp = (reg & AD_DS_WSMC_WARQ) ? 677 ((((reg & AD_DS_WSMC_WARQ) >> 12) & 0x01) ? 12 : 18) : 4; 678 tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1; 679 680 snd_iprintf(buffer, "Wave FIFO: %d %s words\n\n", tmp, 681 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono"); 682 683 684 snd_iprintf(buffer, "Synthesis output: %s\n", 685 reg & AD_DS_WSMC_SYEN ? "enabled" : "disabled"); 686 687 /* SYRQ is at offset 4 */ 688 tmp = (reg & AD_DS_WSMC_SYRQ) ? 689 ((((reg & AD_DS_WSMC_SYRQ) >> 4) & 0x01) ? 12 : 18) : 4; 690 tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1; 691 692 snd_iprintf(buffer, "Synthesis FIFO: %d %s words\n\n", tmp, 693 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono"); 694 695 reg = ad1889_readw(chip, AD_DS_RAMC); 696 snd_iprintf(buffer, "ADC input: %s\n", 697 (reg & AD_DS_RAMC_ADEN) ? "enabled" : "disabled"); 698 snd_iprintf(buffer, "ADC Channels: %s\n", 699 (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono"); 700 snd_iprintf(buffer, "ADC Quality: %d-bit linear\n", 701 (reg & AD_DS_RAMC_AD16) ? 16 : 8); 702 703 /* ACRQ is at offset 4 */ 704 tmp = (reg & AD_DS_RAMC_ACRQ) ? 705 ((((reg & AD_DS_RAMC_ACRQ) >> 4) & 0x01) ? 12 : 18) : 4; 706 tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1; 707 708 snd_iprintf(buffer, "ADC FIFO: %d %s words\n\n", tmp, 709 (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono"); 710 711 snd_iprintf(buffer, "Resampler input: %s\n", 712 reg & AD_DS_RAMC_REEN ? "enabled" : "disabled"); 713 714 /* RERQ is at offset 12 */ 715 tmp = (reg & AD_DS_RAMC_RERQ) ? 716 ((((reg & AD_DS_RAMC_RERQ) >> 12) & 0x01) ? 12 : 18) : 4; 717 tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1; 718 719 snd_iprintf(buffer, "Resampler FIFO: %d %s words\n\n", tmp, 720 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono"); 721 722 723 /* doc says LSB represents -1.5dB, but the max value (-94.5dB) 724 suggests that LSB is -3dB, which is more coherent with the logarithmic 725 nature of the dB scale */ 726 reg = ad1889_readw(chip, AD_DS_WADA); 727 snd_iprintf(buffer, "Left: %s, -%d dB\n", 728 (reg & AD_DS_WADA_LWAM) ? "mute" : "unmute", 729 ((reg & AD_DS_WADA_LWAA) >> 8) * 3); 730 reg = ad1889_readw(chip, AD_DS_WADA); 731 snd_iprintf(buffer, "Right: %s, -%d dB\n", 732 (reg & AD_DS_WADA_RWAM) ? "mute" : "unmute", 733 (reg & AD_DS_WADA_RWAA) * 3); 734 735 reg = ad1889_readw(chip, AD_DS_WAS); 736 snd_iprintf(buffer, "Wave samplerate: %u Hz\n", reg); 737 reg = ad1889_readw(chip, AD_DS_RES); 738 snd_iprintf(buffer, "Resampler samplerate: %u Hz\n", reg); 739 } 740 741 static void 742 snd_ad1889_proc_init(struct snd_ad1889 *chip) 743 { 744 struct snd_info_entry *entry; 745 746 if (!snd_card_proc_new(chip->card, chip->card->driver, &entry)) 747 snd_info_set_text_ops(entry, chip, snd_ad1889_proc_read); 748 } 749 750 static const struct ac97_quirk ac97_quirks[] = { 751 { 752 .subvendor = 0x11d4, /* AD */ 753 .subdevice = 0x1889, /* AD1889 */ 754 .codec_id = AC97_ID_AD1819, 755 .name = "AD1889", 756 .type = AC97_TUNE_HP_ONLY 757 }, 758 { } /* terminator */ 759 }; 760 761 static void 762 snd_ad1889_ac97_xinit(struct snd_ad1889 *chip) 763 { 764 u16 reg; 765 766 reg = ad1889_readw(chip, AD_AC97_ACIC); 767 reg |= AD_AC97_ACIC_ACRD; /* Reset Disable */ 768 ad1889_writew(chip, AD_AC97_ACIC, reg); 769 ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */ 770 udelay(10); 771 /* Interface Enable */ 772 reg |= AD_AC97_ACIC_ACIE; 773 ad1889_writew(chip, AD_AC97_ACIC, reg); 774 775 snd_ad1889_ac97_ready(chip); 776 777 /* Audio Stream Output | Variable Sample Rate Mode */ 778 reg = ad1889_readw(chip, AD_AC97_ACIC); 779 reg |= AD_AC97_ACIC_ASOE | AD_AC97_ACIC_VSRM; 780 ad1889_writew(chip, AD_AC97_ACIC, reg); 781 ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */ 782 783 } 784 785 static void 786 snd_ad1889_ac97_bus_free(struct snd_ac97_bus *bus) 787 { 788 struct snd_ad1889 *chip = bus->private_data; 789 chip->ac97_bus = NULL; 790 } 791 792 static void 793 snd_ad1889_ac97_free(struct snd_ac97 *ac97) 794 { 795 struct snd_ad1889 *chip = ac97->private_data; 796 chip->ac97 = NULL; 797 } 798 799 static int 800 snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override) 801 { 802 int err; 803 struct snd_ac97_template ac97; 804 static struct snd_ac97_bus_ops ops = { 805 .write = snd_ad1889_ac97_write, 806 .read = snd_ad1889_ac97_read, 807 }; 808 809 /* doing that here, it works. */ 810 snd_ad1889_ac97_xinit(chip); 811 812 err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus); 813 if (err < 0) 814 return err; 815 816 chip->ac97_bus->private_free = snd_ad1889_ac97_bus_free; 817 818 memset(&ac97, 0, sizeof(ac97)); 819 ac97.private_data = chip; 820 ac97.private_free = snd_ad1889_ac97_free; 821 ac97.pci = chip->pci; 822 823 err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97); 824 if (err < 0) 825 return err; 826 827 snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override); 828 829 return 0; 830 } 831 832 static int 833 snd_ad1889_free(struct snd_ad1889 *chip) 834 { 835 if (chip->irq < 0) 836 goto skip_hw; 837 838 spin_lock_irq(&chip->lock); 839 840 ad1889_mute(chip); 841 842 /* Turn off interrupt on count and zero DMA registers */ 843 ad1889_channel_reset(chip, AD_CHAN_WAV | AD_CHAN_ADC); 844 845 /* clear DISR. If we don't, we'd better jump off the Eiffel Tower */ 846 ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PTAI | AD_DMA_DISR_PMAI); 847 ad1889_readl(chip, AD_DMA_DISR); /* flush, dammit! */ 848 849 spin_unlock_irq(&chip->lock); 850 851 if (chip->irq >= 0) 852 free_irq(chip->irq, chip); 853 854 skip_hw: 855 iounmap(chip->iobase); 856 pci_release_regions(chip->pci); 857 pci_disable_device(chip->pci); 858 kfree(chip); 859 return 0; 860 } 861 862 static int 863 snd_ad1889_dev_free(struct snd_device *device) 864 { 865 struct snd_ad1889 *chip = device->device_data; 866 return snd_ad1889_free(chip); 867 } 868 869 static int 870 snd_ad1889_init(struct snd_ad1889 *chip) 871 { 872 ad1889_writew(chip, AD_DS_CCS, AD_DS_CCS_CLKEN); /* turn on clock */ 873 ad1889_readw(chip, AD_DS_CCS); /* flush posted write */ 874 875 mdelay(10); 876 877 /* enable Master and Target abort interrupts */ 878 ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PMAE | AD_DMA_DISR_PTAE); 879 880 return 0; 881 } 882 883 static int 884 snd_ad1889_create(struct snd_card *card, 885 struct pci_dev *pci, 886 struct snd_ad1889 **rchip) 887 { 888 int err; 889 890 struct snd_ad1889 *chip; 891 static struct snd_device_ops ops = { 892 .dev_free = snd_ad1889_dev_free, 893 }; 894 895 *rchip = NULL; 896 897 if ((err = pci_enable_device(pci)) < 0) 898 return err; 899 900 /* check PCI availability (32bit DMA) */ 901 if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0 || 902 dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) { 903 dev_err(card->dev, "error setting 32-bit DMA mask.\n"); 904 pci_disable_device(pci); 905 return -ENXIO; 906 } 907 908 /* allocate chip specific data with zero-filled memory */ 909 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { 910 pci_disable_device(pci); 911 return -ENOMEM; 912 } 913 914 chip->card = card; 915 card->private_data = chip; 916 chip->pci = pci; 917 chip->irq = -1; 918 919 /* (1) PCI resource allocation */ 920 if ((err = pci_request_regions(pci, card->driver)) < 0) 921 goto free_and_ret; 922 923 chip->bar = pci_resource_start(pci, 0); 924 chip->iobase = pci_ioremap_bar(pci, 0); 925 if (chip->iobase == NULL) { 926 dev_err(card->dev, "unable to reserve region.\n"); 927 err = -EBUSY; 928 goto free_and_ret; 929 } 930 931 pci_set_master(pci); 932 933 spin_lock_init(&chip->lock); /* only now can we call ad1889_free */ 934 935 if (request_irq(pci->irq, snd_ad1889_interrupt, 936 IRQF_SHARED, KBUILD_MODNAME, chip)) { 937 dev_err(card->dev, "cannot obtain IRQ %d\n", pci->irq); 938 snd_ad1889_free(chip); 939 return -EBUSY; 940 } 941 942 chip->irq = pci->irq; 943 synchronize_irq(chip->irq); 944 945 /* (2) initialization of the chip hardware */ 946 if ((err = snd_ad1889_init(chip)) < 0) { 947 snd_ad1889_free(chip); 948 return err; 949 } 950 951 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 952 snd_ad1889_free(chip); 953 return err; 954 } 955 956 *rchip = chip; 957 958 return 0; 959 960 free_and_ret: 961 kfree(chip); 962 pci_disable_device(pci); 963 964 return err; 965 } 966 967 static int 968 snd_ad1889_probe(struct pci_dev *pci, 969 const struct pci_device_id *pci_id) 970 { 971 int err; 972 static int devno; 973 struct snd_card *card; 974 struct snd_ad1889 *chip; 975 976 /* (1) */ 977 if (devno >= SNDRV_CARDS) 978 return -ENODEV; 979 if (!enable[devno]) { 980 devno++; 981 return -ENOENT; 982 } 983 984 /* (2) */ 985 err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE, 986 0, &card); 987 /* XXX REVISIT: we can probably allocate chip in this call */ 988 if (err < 0) 989 return err; 990 991 strcpy(card->driver, "AD1889"); 992 strcpy(card->shortname, "Analog Devices AD1889"); 993 994 /* (3) */ 995 err = snd_ad1889_create(card, pci, &chip); 996 if (err < 0) 997 goto free_and_ret; 998 999 /* (4) */ 1000 sprintf(card->longname, "%s at 0x%lx irq %i", 1001 card->shortname, chip->bar, chip->irq); 1002 1003 /* (5) */ 1004 /* register AC97 mixer */ 1005 err = snd_ad1889_ac97_init(chip, ac97_quirk[devno]); 1006 if (err < 0) 1007 goto free_and_ret; 1008 1009 err = snd_ad1889_pcm_init(chip, 0); 1010 if (err < 0) 1011 goto free_and_ret; 1012 1013 /* register proc interface */ 1014 snd_ad1889_proc_init(chip); 1015 1016 /* (6) */ 1017 err = snd_card_register(card); 1018 if (err < 0) 1019 goto free_and_ret; 1020 1021 /* (7) */ 1022 pci_set_drvdata(pci, card); 1023 1024 devno++; 1025 return 0; 1026 1027 free_and_ret: 1028 snd_card_free(card); 1029 return err; 1030 } 1031 1032 static void 1033 snd_ad1889_remove(struct pci_dev *pci) 1034 { 1035 snd_card_free(pci_get_drvdata(pci)); 1036 } 1037 1038 static const struct pci_device_id snd_ad1889_ids[] = { 1039 { PCI_DEVICE(PCI_VENDOR_ID_ANALOG_DEVICES, PCI_DEVICE_ID_AD1889JS) }, 1040 { 0, }, 1041 }; 1042 MODULE_DEVICE_TABLE(pci, snd_ad1889_ids); 1043 1044 static struct pci_driver ad1889_pci_driver = { 1045 .name = KBUILD_MODNAME, 1046 .id_table = snd_ad1889_ids, 1047 .probe = snd_ad1889_probe, 1048 .remove = snd_ad1889_remove, 1049 }; 1050 1051 module_pci_driver(ad1889_pci_driver); 1052