1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si> 4 * Takashi Iwai <tiwai@suse.de> 5 * 6 * SB16ASP/AWE32 CSP control 7 * 8 * CSP microcode loader: 9 * alsa-tools/sb16_csp/ 10 */ 11 12 #include <linux/delay.h> 13 #include <linux/init.h> 14 #include <linux/slab.h> 15 #include <linux/module.h> 16 #include <linux/string_choices.h> 17 #include <sound/core.h> 18 #include <sound/control.h> 19 #include <sound/info.h> 20 #include <sound/sb16_csp.h> 21 #include <sound/initval.h> 22 23 MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>"); 24 MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor"); 25 MODULE_LICENSE("GPL"); 26 MODULE_FIRMWARE("sb16/mulaw_main.csp"); 27 MODULE_FIRMWARE("sb16/alaw_main.csp"); 28 MODULE_FIRMWARE("sb16/ima_adpcm_init.csp"); 29 MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp"); 30 MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp"); 31 32 #ifdef SNDRV_LITTLE_ENDIAN 33 #define CSP_HDR_VALUE(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24)) 34 #else 35 #define CSP_HDR_VALUE(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24)) 36 #endif 37 38 #define RIFF_HEADER CSP_HDR_VALUE('R', 'I', 'F', 'F') 39 #define CSP__HEADER CSP_HDR_VALUE('C', 'S', 'P', ' ') 40 #define LIST_HEADER CSP_HDR_VALUE('L', 'I', 'S', 'T') 41 #define FUNC_HEADER CSP_HDR_VALUE('f', 'u', 'n', 'c') 42 #define CODE_HEADER CSP_HDR_VALUE('c', 'o', 'd', 'e') 43 #define INIT_HEADER CSP_HDR_VALUE('i', 'n', 'i', 't') 44 #define MAIN_HEADER CSP_HDR_VALUE('m', 'a', 'i', 'n') 45 46 /* 47 * RIFF data format 48 */ 49 struct riff_header { 50 __le32 name; 51 __le32 len; 52 }; 53 54 struct desc_header { 55 struct riff_header info; 56 __le16 func_nr; 57 __le16 VOC_type; 58 __le16 flags_play_rec; 59 __le16 flags_16bit_8bit; 60 __le16 flags_stereo_mono; 61 __le16 flags_rates; 62 }; 63 64 /* 65 * prototypes 66 */ 67 static void snd_sb_csp_free(struct snd_hwdep *hw); 68 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file); 69 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg); 70 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file); 71 72 static int csp_detect(struct snd_sb *chip, int *version); 73 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val); 74 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val); 75 static int read_register(struct snd_sb *chip, unsigned char reg); 76 static int set_mode_register(struct snd_sb *chip, unsigned char mode); 77 static int get_version(struct snd_sb *chip); 78 79 static int snd_sb_csp_riff_load(struct snd_sb_csp * p, 80 struct snd_sb_csp_microcode __user * code); 81 static int snd_sb_csp_unload(struct snd_sb_csp * p); 82 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags); 83 static int snd_sb_csp_autoload(struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode); 84 static int snd_sb_csp_check_version(struct snd_sb_csp * p); 85 86 static int snd_sb_csp_use(struct snd_sb_csp * p); 87 static int snd_sb_csp_unuse(struct snd_sb_csp * p); 88 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels); 89 static int snd_sb_csp_stop(struct snd_sb_csp * p); 90 static int snd_sb_csp_pause(struct snd_sb_csp * p); 91 static int snd_sb_csp_restart(struct snd_sb_csp * p); 92 93 static int snd_sb_qsound_build(struct snd_sb_csp * p); 94 static void snd_sb_qsound_destroy(struct snd_sb_csp * p); 95 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p); 96 97 static int init_proc_entry(struct snd_sb_csp * p, int device); 98 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer); 99 100 /* 101 * Detect CSP chip and create a new instance 102 */ 103 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep) 104 { 105 struct snd_sb_csp *p; 106 int version; 107 int err; 108 struct snd_hwdep *hw; 109 110 if (rhwdep) 111 *rhwdep = NULL; 112 113 if (csp_detect(chip, &version)) 114 return -ENODEV; 115 116 err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw); 117 if (err < 0) 118 return err; 119 120 p = kzalloc(sizeof(*p), GFP_KERNEL); 121 if (!p) { 122 snd_device_free(chip->card, hw); 123 return -ENOMEM; 124 } 125 p->chip = chip; 126 p->version = version; 127 128 /* CSP operators */ 129 p->ops.csp_use = snd_sb_csp_use; 130 p->ops.csp_unuse = snd_sb_csp_unuse; 131 p->ops.csp_autoload = snd_sb_csp_autoload; 132 p->ops.csp_start = snd_sb_csp_start; 133 p->ops.csp_stop = snd_sb_csp_stop; 134 p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer; 135 136 mutex_init(&p->access_mutex); 137 sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f)); 138 hw->iface = SNDRV_HWDEP_IFACE_SB16CSP; 139 hw->private_data = p; 140 hw->private_free = snd_sb_csp_free; 141 142 /* operators - only write/ioctl */ 143 hw->ops.open = snd_sb_csp_open; 144 hw->ops.ioctl = snd_sb_csp_ioctl; 145 hw->ops.release = snd_sb_csp_release; 146 147 /* create a proc entry */ 148 init_proc_entry(p, device); 149 if (rhwdep) 150 *rhwdep = hw; 151 return 0; 152 } 153 154 /* 155 * free_private for hwdep instance 156 */ 157 static void snd_sb_csp_free(struct snd_hwdep *hwdep) 158 { 159 int i; 160 struct snd_sb_csp *p = hwdep->private_data; 161 if (p) { 162 if (p->running & SNDRV_SB_CSP_ST_RUNNING) 163 snd_sb_csp_stop(p); 164 for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i) 165 release_firmware(p->csp_programs[i]); 166 kfree(p); 167 } 168 } 169 170 /* ------------------------------ */ 171 172 /* 173 * open the device exclusively 174 */ 175 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file) 176 { 177 struct snd_sb_csp *p = hw->private_data; 178 return (snd_sb_csp_use(p)); 179 } 180 181 /* 182 * ioctl for hwdep device: 183 */ 184 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg) 185 { 186 struct snd_sb_csp *p = hw->private_data; 187 struct snd_sb_csp_info info; 188 struct snd_sb_csp_start start_info; 189 int err; 190 191 if (snd_BUG_ON(!p)) 192 return -EINVAL; 193 194 if (snd_sb_csp_check_version(p)) 195 return -ENODEV; 196 197 switch (cmd) { 198 /* get information */ 199 case SNDRV_SB_CSP_IOCTL_INFO: 200 memset(&info, 0, sizeof(info)); 201 *info.codec_name = *p->codec_name; 202 info.func_nr = p->func_nr; 203 info.acc_format = p->acc_format; 204 info.acc_channels = p->acc_channels; 205 info.acc_width = p->acc_width; 206 info.acc_rates = p->acc_rates; 207 info.csp_mode = p->mode; 208 info.run_channels = p->run_channels; 209 info.run_width = p->run_width; 210 info.version = p->version; 211 info.state = p->running; 212 if (copy_to_user((void __user *)arg, &info, sizeof(info))) 213 err = -EFAULT; 214 else 215 err = 0; 216 break; 217 218 /* load CSP microcode */ 219 case SNDRV_SB_CSP_IOCTL_LOAD_CODE: 220 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ? 221 -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg)); 222 break; 223 case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE: 224 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ? 225 -EBUSY : snd_sb_csp_unload(p)); 226 break; 227 228 /* change CSP running state */ 229 case SNDRV_SB_CSP_IOCTL_START: 230 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info))) 231 err = -EFAULT; 232 else 233 err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels); 234 break; 235 case SNDRV_SB_CSP_IOCTL_STOP: 236 err = snd_sb_csp_stop(p); 237 break; 238 case SNDRV_SB_CSP_IOCTL_PAUSE: 239 err = snd_sb_csp_pause(p); 240 break; 241 case SNDRV_SB_CSP_IOCTL_RESTART: 242 err = snd_sb_csp_restart(p); 243 break; 244 default: 245 err = -ENOTTY; 246 break; 247 } 248 249 return err; 250 } 251 252 /* 253 * close the device 254 */ 255 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file) 256 { 257 struct snd_sb_csp *p = hw->private_data; 258 return (snd_sb_csp_unuse(p)); 259 } 260 261 /* ------------------------------ */ 262 263 /* 264 * acquire device 265 */ 266 static int snd_sb_csp_use(struct snd_sb_csp * p) 267 { 268 mutex_lock(&p->access_mutex); 269 if (p->used) { 270 mutex_unlock(&p->access_mutex); 271 return -EAGAIN; 272 } 273 p->used++; 274 mutex_unlock(&p->access_mutex); 275 276 return 0; 277 278 } 279 280 /* 281 * release device 282 */ 283 static int snd_sb_csp_unuse(struct snd_sb_csp * p) 284 { 285 mutex_lock(&p->access_mutex); 286 p->used--; 287 mutex_unlock(&p->access_mutex); 288 289 return 0; 290 } 291 292 /* 293 * load microcode via ioctl: 294 * code is user-space pointer 295 */ 296 static int snd_sb_csp_riff_load(struct snd_sb_csp * p, 297 struct snd_sb_csp_microcode __user * mcode) 298 { 299 struct snd_sb_csp_mc_header info; 300 struct device *dev = p->chip->card->dev; 301 302 unsigned char __user *data_ptr; 303 unsigned char __user *data_end; 304 unsigned short func_nr = 0; 305 306 struct riff_header file_h, item_h, code_h; 307 __le32 item_type; 308 struct desc_header funcdesc_h; 309 310 unsigned long flags; 311 int err; 312 313 if (copy_from_user(&info, mcode, sizeof(info))) 314 return -EFAULT; 315 data_ptr = mcode->data; 316 317 if (copy_from_user(&file_h, data_ptr, sizeof(file_h))) 318 return -EFAULT; 319 if ((le32_to_cpu(file_h.name) != RIFF_HEADER) || 320 (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) { 321 dev_dbg(dev, "%s: Invalid RIFF header\n", __func__); 322 return -EINVAL; 323 } 324 data_ptr += sizeof(file_h); 325 data_end = data_ptr + le32_to_cpu(file_h.len); 326 327 if (copy_from_user(&item_type, data_ptr, sizeof(item_type))) 328 return -EFAULT; 329 if (le32_to_cpu(item_type) != CSP__HEADER) { 330 dev_dbg(dev, "%s: Invalid RIFF file type\n", __func__); 331 return -EINVAL; 332 } 333 data_ptr += sizeof (item_type); 334 335 for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) { 336 if (copy_from_user(&item_h, data_ptr, sizeof(item_h))) 337 return -EFAULT; 338 data_ptr += sizeof(item_h); 339 if (le32_to_cpu(item_h.name) != LIST_HEADER) 340 continue; 341 342 if (copy_from_user(&item_type, data_ptr, sizeof(item_type))) 343 return -EFAULT; 344 switch (le32_to_cpu(item_type)) { 345 case FUNC_HEADER: 346 if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h))) 347 return -EFAULT; 348 func_nr = le16_to_cpu(funcdesc_h.func_nr); 349 break; 350 case CODE_HEADER: 351 if (func_nr != info.func_req) 352 break; /* not required function, try next */ 353 data_ptr += sizeof(item_type); 354 355 /* destroy QSound mixer element */ 356 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) { 357 snd_sb_qsound_destroy(p); 358 } 359 /* Clear all flags */ 360 p->running = 0; 361 p->mode = 0; 362 363 /* load microcode blocks */ 364 for (;;) { 365 if (data_ptr >= data_end) 366 return -EINVAL; 367 if (copy_from_user(&code_h, data_ptr, sizeof(code_h))) 368 return -EFAULT; 369 370 /* init microcode blocks */ 371 if (le32_to_cpu(code_h.name) != INIT_HEADER) 372 break; 373 data_ptr += sizeof(code_h); 374 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len), 375 SNDRV_SB_CSP_LOAD_INITBLOCK); 376 if (err) 377 return err; 378 data_ptr += le32_to_cpu(code_h.len); 379 } 380 /* main microcode block */ 381 if (copy_from_user(&code_h, data_ptr, sizeof(code_h))) 382 return -EFAULT; 383 384 if (le32_to_cpu(code_h.name) != MAIN_HEADER) { 385 dev_dbg(dev, "%s: Missing 'main' microcode\n", __func__); 386 return -EINVAL; 387 } 388 data_ptr += sizeof(code_h); 389 err = snd_sb_csp_load_user(p, data_ptr, 390 le32_to_cpu(code_h.len), 0); 391 if (err) 392 return err; 393 394 /* fill in codec header */ 395 strscpy(p->codec_name, info.codec_name, sizeof(p->codec_name)); 396 p->func_nr = func_nr; 397 p->mode = le16_to_cpu(funcdesc_h.flags_play_rec); 398 switch (le16_to_cpu(funcdesc_h.VOC_type)) { 399 case 0x0001: /* QSound decoder */ 400 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) { 401 if (snd_sb_qsound_build(p) == 0) 402 /* set QSound flag and clear all other mode flags */ 403 p->mode = SNDRV_SB_CSP_MODE_QSOUND; 404 } 405 p->acc_format = 0; 406 break; 407 case 0x0006: /* A Law codec */ 408 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW; 409 break; 410 case 0x0007: /* Mu Law codec */ 411 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW; 412 break; 413 case 0x0011: /* what Creative thinks is IMA ADPCM codec */ 414 case 0x0200: /* Creative ADPCM codec */ 415 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM; 416 break; 417 case 201: /* Text 2 Speech decoder */ 418 /* TODO: Text2Speech handling routines */ 419 p->acc_format = 0; 420 break; 421 case 0x0202: /* Fast Speech 8 codec */ 422 case 0x0203: /* Fast Speech 10 codec */ 423 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL; 424 break; 425 default: /* other codecs are unsupported */ 426 p->acc_format = p->acc_width = p->acc_rates = 0; 427 p->mode = 0; 428 dev_dbg(dev, "%s: Unsupported CSP codec type: 0x%04x\n", 429 __func__, 430 le16_to_cpu(funcdesc_h.VOC_type)); 431 return -EINVAL; 432 } 433 p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono); 434 p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit); 435 p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates); 436 437 /* Decouple CSP from IRQ and DMAREQ lines */ 438 spin_lock_irqsave(&p->chip->reg_lock, flags); 439 set_mode_register(p->chip, 0xfc); 440 set_mode_register(p->chip, 0x00); 441 spin_unlock_irqrestore(&p->chip->reg_lock, flags); 442 443 /* finished loading successfully */ 444 p->running = SNDRV_SB_CSP_ST_LOADED; /* set LOADED flag */ 445 return 0; 446 } 447 } 448 dev_dbg(dev, "%s: Function #%d not found\n", __func__, info.func_req); 449 return -EINVAL; 450 } 451 452 /* 453 * unload CSP microcode 454 */ 455 static int snd_sb_csp_unload(struct snd_sb_csp * p) 456 { 457 if (p->running & SNDRV_SB_CSP_ST_RUNNING) 458 return -EBUSY; 459 if (!(p->running & SNDRV_SB_CSP_ST_LOADED)) 460 return -ENXIO; 461 462 /* clear supported formats */ 463 p->acc_format = 0; 464 p->acc_channels = p->acc_width = p->acc_rates = 0; 465 /* destroy QSound mixer element */ 466 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) { 467 snd_sb_qsound_destroy(p); 468 } 469 /* clear all flags */ 470 p->running = 0; 471 p->mode = 0; 472 return 0; 473 } 474 475 /* 476 * send command sequence to DSP 477 */ 478 static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size) 479 { 480 int i; 481 for (i = 0; i < size; i++) { 482 if (!snd_sbdsp_command(chip, seq[i])) 483 return -EIO; 484 } 485 return 0; 486 } 487 488 /* 489 * set CSP codec parameter 490 */ 491 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val) 492 { 493 unsigned char dsp_cmd[3]; 494 495 dsp_cmd[0] = 0x05; /* CSP set codec parameter */ 496 dsp_cmd[1] = val; /* Parameter value */ 497 dsp_cmd[2] = par; /* Parameter */ 498 command_seq(chip, dsp_cmd, 3); 499 snd_sbdsp_command(chip, 0x03); /* DSP read? */ 500 if (snd_sbdsp_get_byte(chip) != par) 501 return -EIO; 502 return 0; 503 } 504 505 /* 506 * set CSP register 507 */ 508 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val) 509 { 510 unsigned char dsp_cmd[3]; 511 512 dsp_cmd[0] = 0x0e; /* CSP set register */ 513 dsp_cmd[1] = reg; /* CSP Register */ 514 dsp_cmd[2] = val; /* value */ 515 return command_seq(chip, dsp_cmd, 3); 516 } 517 518 /* 519 * read CSP register 520 * return < 0 -> error 521 */ 522 static int read_register(struct snd_sb *chip, unsigned char reg) 523 { 524 unsigned char dsp_cmd[2]; 525 526 dsp_cmd[0] = 0x0f; /* CSP read register */ 527 dsp_cmd[1] = reg; /* CSP Register */ 528 command_seq(chip, dsp_cmd, 2); 529 return snd_sbdsp_get_byte(chip); /* Read DSP value */ 530 } 531 532 /* 533 * set CSP mode register 534 */ 535 static int set_mode_register(struct snd_sb *chip, unsigned char mode) 536 { 537 unsigned char dsp_cmd[2]; 538 539 dsp_cmd[0] = 0x04; /* CSP set mode register */ 540 dsp_cmd[1] = mode; /* mode */ 541 return command_seq(chip, dsp_cmd, 2); 542 } 543 544 /* 545 * Detect CSP 546 * return 0 if CSP exists. 547 */ 548 static int csp_detect(struct snd_sb *chip, int *version) 549 { 550 unsigned char csp_test1, csp_test2; 551 unsigned long flags; 552 int result = -ENODEV; 553 554 spin_lock_irqsave(&chip->reg_lock, flags); 555 556 set_codec_parameter(chip, 0x00, 0x00); 557 set_mode_register(chip, 0xfc); /* 0xfc = ?? */ 558 559 csp_test1 = read_register(chip, 0x83); 560 set_register(chip, 0x83, ~csp_test1); 561 csp_test2 = read_register(chip, 0x83); 562 if (csp_test2 != (csp_test1 ^ 0xff)) 563 goto __fail; 564 565 set_register(chip, 0x83, csp_test1); 566 csp_test2 = read_register(chip, 0x83); 567 if (csp_test2 != csp_test1) 568 goto __fail; 569 570 set_mode_register(chip, 0x00); /* 0x00 = ? */ 571 572 *version = get_version(chip); 573 snd_sbdsp_reset(chip); /* reset DSP after getversion! */ 574 if (*version >= 0x10 && *version <= 0x1f) 575 result = 0; /* valid version id */ 576 577 __fail: 578 spin_unlock_irqrestore(&chip->reg_lock, flags); 579 return result; 580 } 581 582 /* 583 * get CSP version number 584 */ 585 static int get_version(struct snd_sb *chip) 586 { 587 unsigned char dsp_cmd[2]; 588 589 dsp_cmd[0] = 0x08; /* SB_DSP_!something! */ 590 dsp_cmd[1] = 0x03; /* get chip version id? */ 591 command_seq(chip, dsp_cmd, 2); 592 593 return (snd_sbdsp_get_byte(chip)); 594 } 595 596 /* 597 * check if the CSP version is valid 598 */ 599 static int snd_sb_csp_check_version(struct snd_sb_csp * p) 600 { 601 if (p->version < 0x10 || p->version > 0x1f) { 602 dev_dbg(p->chip->card->dev, 603 "%s: Invalid CSP version: 0x%x\n", 604 __func__, p->version); 605 return 1; 606 } 607 return 0; 608 } 609 610 /* 611 * download microcode to CSP (microcode should have one "main" block). 612 */ 613 static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags) 614 { 615 int status, i; 616 int err; 617 int result = -EIO; 618 unsigned long flags; 619 620 spin_lock_irqsave(&p->chip->reg_lock, flags); 621 snd_sbdsp_command(p->chip, 0x01); /* CSP download command */ 622 if (snd_sbdsp_get_byte(p->chip)) { 623 dev_dbg(p->chip->card->dev, "%s: Download command failed\n", __func__); 624 goto __fail; 625 } 626 /* Send CSP low byte (size - 1) */ 627 snd_sbdsp_command(p->chip, (unsigned char)(size - 1)); 628 /* Send high byte */ 629 snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8)); 630 /* send microcode sequence */ 631 /* load from kernel space */ 632 while (size--) { 633 if (!snd_sbdsp_command(p->chip, *buf++)) 634 goto __fail; 635 } 636 if (snd_sbdsp_get_byte(p->chip)) 637 goto __fail; 638 639 if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) { 640 i = 0; 641 /* some codecs (FastSpeech) take some time to initialize */ 642 while (1) { 643 snd_sbdsp_command(p->chip, 0x03); 644 status = snd_sbdsp_get_byte(p->chip); 645 if (status == 0x55 || ++i >= 10) 646 break; 647 udelay (10); 648 } 649 if (status != 0x55) { 650 dev_dbg(p->chip->card->dev, 651 "%s: Microcode initialization failed\n", 652 __func__); 653 goto __fail; 654 } 655 } else { 656 /* 657 * Read mixer register SB_DSP4_DMASETUP after loading 'main' code. 658 * Start CSP chip if no 16bit DMA channel is set - some kind 659 * of autorun or perhaps a bugfix? 660 */ 661 spin_lock(&p->chip->mixer_lock); 662 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP); 663 spin_unlock(&p->chip->mixer_lock); 664 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) { 665 err = (set_codec_parameter(p->chip, 0xaa, 0x00) || 666 set_codec_parameter(p->chip, 0xff, 0x00)); 667 snd_sbdsp_reset(p->chip); /* really! */ 668 if (err) 669 goto __fail; 670 set_mode_register(p->chip, 0xc0); /* c0 = STOP */ 671 set_mode_register(p->chip, 0x70); /* 70 = RUN */ 672 } 673 } 674 result = 0; 675 676 __fail: 677 spin_unlock_irqrestore(&p->chip->reg_lock, flags); 678 return result; 679 } 680 681 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags) 682 { 683 int err; 684 unsigned char *kbuf; 685 686 kbuf = memdup_user(buf, size); 687 if (IS_ERR(kbuf)) 688 return PTR_ERR(kbuf); 689 690 err = snd_sb_csp_load(p, kbuf, size, load_flags); 691 692 kfree(kbuf); 693 return err; 694 } 695 696 static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags) 697 { 698 static const char *const names[] = { 699 "sb16/mulaw_main.csp", 700 "sb16/alaw_main.csp", 701 "sb16/ima_adpcm_init.csp", 702 "sb16/ima_adpcm_playback.csp", 703 "sb16/ima_adpcm_capture.csp", 704 }; 705 const struct firmware *program; 706 707 BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT); 708 program = p->csp_programs[index]; 709 if (!program) { 710 int err = request_firmware(&program, names[index], 711 p->chip->card->dev); 712 if (err < 0) 713 return err; 714 p->csp_programs[index] = program; 715 } 716 return snd_sb_csp_load(p, program->data, program->size, flags); 717 } 718 719 /* 720 * autoload hardware codec if necessary 721 * return 0 if CSP is loaded and ready to run (p->running != 0) 722 */ 723 static int snd_sb_csp_autoload(struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode) 724 { 725 unsigned long flags; 726 int err = 0; 727 728 /* if CSP is running or manually loaded then exit */ 729 if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED)) 730 return -EBUSY; 731 732 /* autoload microcode only if requested hardware codec is not already loaded */ 733 if (((1U << (__force int)pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) { 734 p->running = SNDRV_SB_CSP_ST_AUTO; 735 } else { 736 switch (pcm_sfmt) { 737 case SNDRV_PCM_FORMAT_MU_LAW: 738 err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0); 739 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW; 740 p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE; 741 break; 742 case SNDRV_PCM_FORMAT_A_LAW: 743 err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0); 744 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW; 745 p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE; 746 break; 747 case SNDRV_PCM_FORMAT_IMA_ADPCM: 748 err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT, 749 SNDRV_SB_CSP_LOAD_INITBLOCK); 750 if (err) 751 break; 752 if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) { 753 err = snd_sb_csp_firmware_load 754 (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0); 755 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE; 756 } else { 757 err = snd_sb_csp_firmware_load 758 (p, CSP_PROGRAM_ADPCM_CAPTURE, 0); 759 p->mode = SNDRV_SB_CSP_MODE_DSP_READ; 760 } 761 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM; 762 break; 763 default: 764 /* Decouple CSP from IRQ and DMAREQ lines */ 765 if (p->running & SNDRV_SB_CSP_ST_AUTO) { 766 spin_lock_irqsave(&p->chip->reg_lock, flags); 767 set_mode_register(p->chip, 0xfc); 768 set_mode_register(p->chip, 0x00); 769 spin_unlock_irqrestore(&p->chip->reg_lock, flags); 770 p->running = 0; /* clear autoloaded flag */ 771 } 772 return -EINVAL; 773 } 774 if (err) { 775 p->acc_format = 0; 776 p->acc_channels = p->acc_width = p->acc_rates = 0; 777 778 p->running = 0; /* clear autoloaded flag */ 779 p->mode = 0; 780 return (err); 781 } else { 782 p->running = SNDRV_SB_CSP_ST_AUTO; /* set autoloaded flag */ 783 p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT; /* only 16 bit data */ 784 p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO; 785 p->acc_rates = SNDRV_SB_CSP_RATE_ALL; /* HW codecs accept all rates */ 786 } 787 788 } 789 return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO; 790 } 791 792 /* 793 * start CSP 794 */ 795 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels) 796 { 797 struct device *dev = p->chip->card->dev; 798 unsigned char s_type; /* sample type */ 799 unsigned char mixL, mixR; 800 int result = -EIO; 801 unsigned long flags; 802 803 if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) { 804 dev_dbg(dev, "%s: Microcode not loaded\n", __func__); 805 return -ENXIO; 806 } 807 if (p->running & SNDRV_SB_CSP_ST_RUNNING) { 808 dev_dbg(dev, "%s: CSP already running\n", __func__); 809 return -EBUSY; 810 } 811 if (!(sample_width & p->acc_width)) { 812 dev_dbg(dev, "%s: Unsupported PCM sample width\n", __func__); 813 return -EINVAL; 814 } 815 if (!(channels & p->acc_channels)) { 816 dev_dbg(dev, "%s: Invalid number of channels\n", __func__); 817 return -EINVAL; 818 } 819 820 /* Mute PCM volume */ 821 spin_lock_irqsave(&p->chip->mixer_lock, flags); 822 mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV); 823 mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1); 824 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7); 825 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7); 826 spin_unlock_irqrestore(&p->chip->mixer_lock, flags); 827 828 spin_lock(&p->chip->reg_lock); 829 set_mode_register(p->chip, 0xc0); /* c0 = STOP */ 830 set_mode_register(p->chip, 0x70); /* 70 = RUN */ 831 832 s_type = 0x00; 833 if (channels == SNDRV_SB_CSP_MONO) 834 s_type = 0x11; /* 000n 000n (n = 1 if mono) */ 835 if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT) 836 s_type |= 0x22; /* 00dX 00dX (d = 1 if 8 bit samples) */ 837 838 if (set_codec_parameter(p->chip, 0x81, s_type)) { 839 dev_dbg(dev, "%s: Set sample type command failed\n", __func__); 840 goto __fail; 841 } 842 if (set_codec_parameter(p->chip, 0x80, 0x00)) { 843 dev_dbg(dev, "%s: Codec start command failed\n", __func__); 844 goto __fail; 845 } 846 p->run_width = sample_width; 847 p->run_channels = channels; 848 849 p->running |= SNDRV_SB_CSP_ST_RUNNING; 850 851 if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) { 852 set_codec_parameter(p->chip, 0xe0, 0x01); 853 /* enable QSound decoder */ 854 set_codec_parameter(p->chip, 0x00, 0xff); 855 set_codec_parameter(p->chip, 0x01, 0xff); 856 p->running |= SNDRV_SB_CSP_ST_QSOUND; 857 /* set QSound startup value */ 858 snd_sb_csp_qsound_transfer(p); 859 } 860 result = 0; 861 862 __fail: 863 spin_unlock(&p->chip->reg_lock); 864 865 /* restore PCM volume */ 866 spin_lock_irqsave(&p->chip->mixer_lock, flags); 867 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL); 868 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR); 869 spin_unlock_irqrestore(&p->chip->mixer_lock, flags); 870 871 return result; 872 } 873 874 /* 875 * stop CSP 876 */ 877 static int snd_sb_csp_stop(struct snd_sb_csp * p) 878 { 879 int result; 880 unsigned char mixL, mixR; 881 unsigned long flags; 882 883 if (!(p->running & SNDRV_SB_CSP_ST_RUNNING)) 884 return 0; 885 886 /* Mute PCM volume */ 887 spin_lock_irqsave(&p->chip->mixer_lock, flags); 888 mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV); 889 mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1); 890 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7); 891 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7); 892 spin_unlock_irqrestore(&p->chip->mixer_lock, flags); 893 894 spin_lock(&p->chip->reg_lock); 895 if (p->running & SNDRV_SB_CSP_ST_QSOUND) { 896 set_codec_parameter(p->chip, 0xe0, 0x01); 897 /* disable QSound decoder */ 898 set_codec_parameter(p->chip, 0x00, 0x00); 899 set_codec_parameter(p->chip, 0x01, 0x00); 900 901 p->running &= ~SNDRV_SB_CSP_ST_QSOUND; 902 } 903 result = set_mode_register(p->chip, 0xc0); /* c0 = STOP */ 904 spin_unlock(&p->chip->reg_lock); 905 906 /* restore PCM volume */ 907 spin_lock_irqsave(&p->chip->mixer_lock, flags); 908 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL); 909 snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR); 910 spin_unlock_irqrestore(&p->chip->mixer_lock, flags); 911 912 if (!(result)) 913 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING); 914 return result; 915 } 916 917 /* 918 * pause CSP codec and hold DMA transfer 919 */ 920 static int snd_sb_csp_pause(struct snd_sb_csp * p) 921 { 922 int result; 923 unsigned long flags; 924 925 if (!(p->running & SNDRV_SB_CSP_ST_RUNNING)) 926 return -EBUSY; 927 928 spin_lock_irqsave(&p->chip->reg_lock, flags); 929 result = set_codec_parameter(p->chip, 0x80, 0xff); 930 spin_unlock_irqrestore(&p->chip->reg_lock, flags); 931 if (!(result)) 932 p->running |= SNDRV_SB_CSP_ST_PAUSED; 933 934 return result; 935 } 936 937 /* 938 * restart CSP codec and resume DMA transfer 939 */ 940 static int snd_sb_csp_restart(struct snd_sb_csp * p) 941 { 942 int result; 943 unsigned long flags; 944 945 if (!(p->running & SNDRV_SB_CSP_ST_PAUSED)) 946 return -EBUSY; 947 948 spin_lock_irqsave(&p->chip->reg_lock, flags); 949 result = set_codec_parameter(p->chip, 0x80, 0x00); 950 spin_unlock_irqrestore(&p->chip->reg_lock, flags); 951 if (!(result)) 952 p->running &= ~SNDRV_SB_CSP_ST_PAUSED; 953 954 return result; 955 } 956 957 /* ------------------------------ */ 958 959 /* 960 * QSound mixer control for PCM 961 */ 962 963 #define snd_sb_qsound_switch_info snd_ctl_boolean_mono_info 964 965 static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 966 { 967 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol); 968 969 ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0; 970 return 0; 971 } 972 973 static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 974 { 975 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol); 976 unsigned long flags; 977 int change; 978 unsigned char nval; 979 980 nval = ucontrol->value.integer.value[0] & 0x01; 981 spin_lock_irqsave(&p->q_lock, flags); 982 change = p->q_enabled != nval; 983 p->q_enabled = nval; 984 spin_unlock_irqrestore(&p->q_lock, flags); 985 return change; 986 } 987 988 static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 989 { 990 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 991 uinfo->count = 2; 992 uinfo->value.integer.min = 0; 993 uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT; 994 return 0; 995 } 996 997 static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 998 { 999 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol); 1000 unsigned long flags; 1001 1002 spin_lock_irqsave(&p->q_lock, flags); 1003 ucontrol->value.integer.value[0] = p->qpos_left; 1004 ucontrol->value.integer.value[1] = p->qpos_right; 1005 spin_unlock_irqrestore(&p->q_lock, flags); 1006 return 0; 1007 } 1008 1009 static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 1010 { 1011 struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol); 1012 unsigned long flags; 1013 int change; 1014 unsigned char nval1, nval2; 1015 1016 nval1 = ucontrol->value.integer.value[0]; 1017 if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT) 1018 nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT; 1019 nval2 = ucontrol->value.integer.value[1]; 1020 if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT) 1021 nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT; 1022 spin_lock_irqsave(&p->q_lock, flags); 1023 change = p->qpos_left != nval1 || p->qpos_right != nval2; 1024 p->qpos_left = nval1; 1025 p->qpos_right = nval2; 1026 p->qpos_changed = change; 1027 spin_unlock_irqrestore(&p->q_lock, flags); 1028 return change; 1029 } 1030 1031 static const struct snd_kcontrol_new snd_sb_qsound_switch = { 1032 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1033 .name = "3D Control - Switch", 1034 .info = snd_sb_qsound_switch_info, 1035 .get = snd_sb_qsound_switch_get, 1036 .put = snd_sb_qsound_switch_put 1037 }; 1038 1039 static const struct snd_kcontrol_new snd_sb_qsound_space = { 1040 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 1041 .name = "3D Control - Space", 1042 .info = snd_sb_qsound_space_info, 1043 .get = snd_sb_qsound_space_get, 1044 .put = snd_sb_qsound_space_put 1045 }; 1046 1047 static int snd_sb_qsound_build(struct snd_sb_csp * p) 1048 { 1049 struct snd_card *card; 1050 struct snd_kcontrol *kctl; 1051 int err; 1052 1053 if (snd_BUG_ON(!p)) 1054 return -EINVAL; 1055 1056 card = p->chip->card; 1057 p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2; 1058 p->qpos_changed = 0; 1059 1060 spin_lock_init(&p->q_lock); 1061 1062 kctl = snd_ctl_new1(&snd_sb_qsound_switch, p); 1063 err = snd_ctl_add(card, kctl); 1064 if (err < 0) 1065 goto __error; 1066 p->qsound_switch = kctl; 1067 kctl = snd_ctl_new1(&snd_sb_qsound_space, p); 1068 err = snd_ctl_add(card, kctl); 1069 if (err < 0) 1070 goto __error; 1071 p->qsound_space = kctl; 1072 1073 return 0; 1074 1075 __error: 1076 snd_sb_qsound_destroy(p); 1077 return err; 1078 } 1079 1080 static void snd_sb_qsound_destroy(struct snd_sb_csp * p) 1081 { 1082 struct snd_card *card; 1083 unsigned long flags; 1084 1085 if (snd_BUG_ON(!p)) 1086 return; 1087 1088 card = p->chip->card; 1089 1090 snd_ctl_remove(card, p->qsound_switch); 1091 p->qsound_switch = NULL; 1092 snd_ctl_remove(card, p->qsound_space); 1093 p->qsound_space = NULL; 1094 1095 /* cancel pending transfer of QSound parameters */ 1096 spin_lock_irqsave (&p->q_lock, flags); 1097 p->qpos_changed = 0; 1098 spin_unlock_irqrestore (&p->q_lock, flags); 1099 } 1100 1101 /* 1102 * Transfer qsound parameters to CSP, 1103 * function should be called from interrupt routine 1104 */ 1105 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p) 1106 { 1107 int err = -ENXIO; 1108 1109 spin_lock(&p->q_lock); 1110 if (p->running & SNDRV_SB_CSP_ST_QSOUND) { 1111 set_codec_parameter(p->chip, 0xe0, 0x01); 1112 /* left channel */ 1113 set_codec_parameter(p->chip, 0x00, p->qpos_left); 1114 set_codec_parameter(p->chip, 0x02, 0x00); 1115 /* right channel */ 1116 set_codec_parameter(p->chip, 0x00, p->qpos_right); 1117 set_codec_parameter(p->chip, 0x03, 0x00); 1118 err = 0; 1119 } 1120 p->qpos_changed = 0; 1121 spin_unlock(&p->q_lock); 1122 return err; 1123 } 1124 1125 /* ------------------------------ */ 1126 1127 /* 1128 * proc interface 1129 */ 1130 static int init_proc_entry(struct snd_sb_csp * p, int device) 1131 { 1132 char name[16]; 1133 1134 sprintf(name, "cspD%d", device); 1135 snd_card_ro_proc_new(p->chip->card, name, p, info_read); 1136 return 0; 1137 } 1138 1139 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 1140 { 1141 struct snd_sb_csp *p = entry->private_data; 1142 1143 snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f)); 1144 snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'), 1145 ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'), 1146 ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'), 1147 ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-')); 1148 if (p->running & SNDRV_SB_CSP_ST_LOADED) { 1149 snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr); 1150 snd_iprintf(buffer, "Sample rates: "); 1151 if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) { 1152 snd_iprintf(buffer, "All\n"); 1153 } else { 1154 snd_iprintf(buffer, "%s%s%s%s\n", 1155 ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""), 1156 ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""), 1157 ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""), 1158 ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : "")); 1159 } 1160 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) { 1161 snd_iprintf(buffer, "QSound decoder %s\n", 1162 str_enabled_disabled(p->q_enabled)); 1163 } else { 1164 snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n", 1165 p->acc_format, 1166 ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"), 1167 ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"), 1168 ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"), 1169 ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"), 1170 ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"), 1171 ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-")); 1172 } 1173 } 1174 if (p->running & SNDRV_SB_CSP_ST_AUTO) { 1175 snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n"); 1176 } 1177 if (p->running & SNDRV_SB_CSP_ST_RUNNING) { 1178 snd_iprintf(buffer, "Processing %dbit %s PCM samples\n", 1179 ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8), 1180 ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo")); 1181 } 1182 if (p->running & SNDRV_SB_CSP_ST_QSOUND) { 1183 snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n", 1184 p->qpos_left, p->qpos_right); 1185 } 1186 } 1187 1188 /* */ 1189 1190 EXPORT_SYMBOL(snd_sb_csp_new); 1191