sound/isa/sb/sb16_csp.c

   1 /*
   2  *  Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
   3  *                        Takashi Iwai <tiwai@suse.de>
   4  *
   5  *  SB16ASP/AWE32 CSP control
   6  *
   7  *  CSP microcode loader:
   8  *   alsa-tools/sb16_csp/
   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; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 #include <sound/driver.h>
  27 #include <linux/delay.h>
  28 #include <linux/init.h>
  29 #include <linux/slab.h>
  30 #include <sound/core.h>
  31 #include <sound/control.h>
  32 #include <sound/info.h>
  33 #include <sound/sb16_csp.h>
  34 #include <sound/initval.h>
  35
  36 MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
  37 MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor");
  38 MODULE_LICENSE("GPL");
  39
  40 #ifdef SNDRV_LITTLE_ENDIAN
  41 #define CSP_HDR_VALUE(a,b,c,d)  ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
  42 #else
  43 #define CSP_HDR_VALUE(a,b,c,d)  ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
  44 #endif
  45
  46 #define RIFF_HEADER     CSP_HDR_VALUE('R', 'I', 'F', 'F')
  47 #define CSP__HEADER     CSP_HDR_VALUE('C', 'S', 'P', ' ')
  48 #define LIST_HEADER     CSP_HDR_VALUE('L', 'I', 'S', 'T')
  49 #define FUNC_HEADER     CSP_HDR_VALUE('f', 'u', 'n', 'c')
  50 #define CODE_HEADER     CSP_HDR_VALUE('c', 'o', 'd', 'e')
  51 #define INIT_HEADER     CSP_HDR_VALUE('i', 'n', 'i', 't')
  52 #define MAIN_HEADER     CSP_HDR_VALUE('m', 'a', 'i', 'n')
  53
  54 /*
  55  * RIFF data format
  56  */
  57 struct riff_header {
  58         __u32 name;
  59         __u32 len;
  60 };
  61
  62 struct desc_header {
  63         struct riff_header info;
  64         __u16 func_nr;
  65         __u16 VOC_type;
  66         __u16 flags_play_rec;
  67         __u16 flags_16bit_8bit;
  68         __u16 flags_stereo_mono;
  69         __u16 flags_rates;
  70 };
  71
  72 /*
  73  * prototypes
  74  */
  75 static void snd_sb_csp_free(snd_hwdep_t *hw);
  76 static int snd_sb_csp_open(snd_hwdep_t * hw, struct file *file);
  77 static int snd_sb_csp_ioctl(snd_hwdep_t * hw, struct file *file, unsigned int cmd, unsigned long arg);
  78 static int snd_sb_csp_release(snd_hwdep_t * hw, struct file *file);
  79
  80 static int csp_detect(sb_t *chip, int *version);
  81 static int set_codec_parameter(sb_t *chip, unsigned char par, unsigned char val);
  82 static int set_register(sb_t *chip, unsigned char reg, unsigned char val);
  83 static int read_register(sb_t *chip, unsigned char reg);
  84 static int set_mode_register(sb_t *chip, unsigned char mode);
  85 static int get_version(sb_t *chip);
  86
  87 static int snd_sb_csp_riff_load(snd_sb_csp_t * p, snd_sb_csp_microcode_t __user * code);
  88 static int snd_sb_csp_unload(snd_sb_csp_t * p);
  89 static int snd_sb_csp_load_user(snd_sb_csp_t * p, const unsigned char __user *buf, int size, int load_flags);
  90 static int snd_sb_csp_autoload(snd_sb_csp_t * p, int pcm_sfmt, int play_rec_mode);
  91 static int snd_sb_csp_check_version(snd_sb_csp_t * p);
  92
  93 static int snd_sb_csp_use(snd_sb_csp_t * p);
  94 static int snd_sb_csp_unuse(snd_sb_csp_t * p);
  95 static int snd_sb_csp_start(snd_sb_csp_t * p, int sample_width, int channels);
  96 static int snd_sb_csp_stop(snd_sb_csp_t * p);
  97 static int snd_sb_csp_pause(snd_sb_csp_t * p);
  98 static int snd_sb_csp_restart(snd_sb_csp_t * p);
  99
 100 static int snd_sb_qsound_build(snd_sb_csp_t * p);
 101 static void snd_sb_qsound_destroy(snd_sb_csp_t * p);
 102 static int snd_sb_csp_qsound_transfer(snd_sb_csp_t * p);
 103
 104 static int init_proc_entry(snd_sb_csp_t * p, int device);
 105 static void info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer);
 106
 107 /*
 108  * Detect CSP chip and create a new instance
 109  */
 110 int snd_sb_csp_new(sb_t *chip, int device, snd_hwdep_t ** rhwdep)
 111 {
 112         snd_sb_csp_t *p;
 113         int version, err;
 114         snd_hwdep_t *hw;
 115
 116         if (rhwdep)
 117                 *rhwdep = NULL;
 118
 119         if (csp_detect(chip, &version))
 120                 return -ENODEV;
 121
 122         if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
 123                 return err;
 124
 125         if ((p = kcalloc(1, sizeof(*p), GFP_KERNEL)) == NULL) {
 126                 snd_device_free(chip->card, hw);
 127                 return -ENOMEM;
 128         }
 129         p->chip = chip;
 130         p->version = version;
 131
 132         /* CSP operators */
 133         p->ops.csp_use = snd_sb_csp_use;
 134         p->ops.csp_unuse = snd_sb_csp_unuse;
 135         p->ops.csp_autoload = snd_sb_csp_autoload;
 136         p->ops.csp_start = snd_sb_csp_start;
 137         p->ops.csp_stop = snd_sb_csp_stop;
 138         p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
 139
 140         init_MUTEX(&p->access_mutex);
 141         sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
 142         hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
 143         hw->private_data = p;
 144         hw->private_free = snd_sb_csp_free;
 145
 146         /* operators - only write/ioctl */
 147         hw->ops.open = snd_sb_csp_open;
 148         hw->ops.ioctl = snd_sb_csp_ioctl;
 149         hw->ops.release = snd_sb_csp_release;
 150
 151         /* create a proc entry */
 152         init_proc_entry(p, device);
 153         if (rhwdep)
 154                 *rhwdep = hw;
 155         return 0;
 156 }
 157
 158 /*
 159  * free_private for hwdep instance
 160  */
 161 static void snd_sb_csp_free(snd_hwdep_t *hwdep)
 162 {
 163         snd_sb_csp_t *p = hwdep->private_data;
 164         if (p) {
 165                 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
 166                         snd_sb_csp_stop(p);
 167                 kfree(p);
 168         }
 169 }
 170
 171 /* ------------------------------ */
 172
 173 /*
 174  * open the device exclusively
 175  */
 176 static int snd_sb_csp_open(snd_hwdep_t * hw, struct file *file)
 177 {
 178         snd_sb_csp_t *p = hw->private_data;
 179         return (snd_sb_csp_use(p));
 180 }
 181
 182 /*
 183  * ioctl for hwdep device:
 184  */
 185 static int snd_sb_csp_ioctl(snd_hwdep_t * hw, struct file *file, unsigned int cmd, unsigned long arg)
 186 {
 187         snd_sb_csp_t *p = hw->private_data;
 188         snd_sb_csp_info_t info;
 189         snd_sb_csp_start_t start_info;
 190         int err;
 191
 192         snd_assert(p != NULL, 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                 *info.codec_name = *p->codec_name;
 201                 info.func_nr = p->func_nr;
 202                 info.acc_format = p->acc_format;
 203                 info.acc_channels = p->acc_channels;
 204                 info.acc_width = p->acc_width;
 205                 info.acc_rates = p->acc_rates;
 206                 info.csp_mode = p->mode;
 207                 info.run_channels = p->run_channels;
 208                 info.run_width = p->run_width;
 209                 info.version = p->version;
 210                 info.state = p->running;
 211                 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
 212                         err = -EFAULT;
 213                 else
 214                         err = 0;
 215                 break;
 216
 217                 /* load CSP microcode */
 218         case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
 219                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
 220                        -EBUSY : snd_sb_csp_riff_load(p, (snd_sb_csp_microcode_t __user *) arg));
 221                 break;
 222         case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
 223                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
 224                        -EBUSY : snd_sb_csp_unload(p));
 225                 break;
 226
 227                 /* change CSP running state */
 228         case SNDRV_SB_CSP_IOCTL_START:
 229                 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
 230                         err = -EFAULT;
 231                 else
 232                         err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
 233                 break;
 234         case SNDRV_SB_CSP_IOCTL_STOP:
 235                 err = snd_sb_csp_stop(p);
 236                 break;
 237         case SNDRV_SB_CSP_IOCTL_PAUSE:
 238                 err = snd_sb_csp_pause(p);
 239                 break;
 240         case SNDRV_SB_CSP_IOCTL_RESTART:
 241                 err = snd_sb_csp_restart(p);
 242                 break;
 243         default:
 244                 err = -ENOTTY;
 245                 break;
 246         }
 247
 248         return err;
 249 }
 250
 251 /*
 252  * close the device
 253  */
 254 static int snd_sb_csp_release(snd_hwdep_t * hw, struct file *file)
 255 {
 256         snd_sb_csp_t *p = hw->private_data;
 257         return (snd_sb_csp_unuse(p));
 258 }
 259
 260 /* ------------------------------ */
 261
 262 /*
 263  * acquire device
 264  */
 265 static int snd_sb_csp_use(snd_sb_csp_t * p)
 266 {
 267         down(&p->access_mutex);
 268         if (p->used) {
 269                 up(&p->access_mutex);
 270                 return -EAGAIN;
 271         }
 272         p->used++;
 273         up(&p->access_mutex);
 274
 275         return 0;
 276
 277 }
 278
 279 /*
 280  * release device
 281  */
 282 static int snd_sb_csp_unuse(snd_sb_csp_t * p)
 283 {
 284         down(&p->access_mutex);
 285         p->used--;
 286         up(&p->access_mutex);
 287
 288         return 0;
 289 }
 290
 291 /*
 292  * load microcode via ioctl:
 293  * code is user-space pointer
 294  */
 295 static int snd_sb_csp_riff_load(snd_sb_csp_t * p, snd_sb_csp_microcode_t __user * mcode)
 296 {
 297         snd_sb_csp_mc_header_t info;
 298
 299         unsigned char __user *data_ptr;
 300         unsigned char __user *data_end;
 301         unsigned short func_nr = 0;
 302
 303         struct riff_header file_h, item_h, code_h;
 304         __u32 item_type;
 305         struct desc_header funcdesc_h;
 306
 307         unsigned long flags;
 308         int err;
 309
 310         if (copy_from_user(&info, mcode, sizeof(info)))
 311                 return -EFAULT;
 312         data_ptr = mcode->data;
 313
 314         if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
 315                 return -EFAULT;
 316         if ((file_h.name != RIFF_HEADER) ||
 317             (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
 318                 snd_printd("%s: Invalid RIFF header\n", __FUNCTION__);
 319                 return -EINVAL;
 320         }
 321         data_ptr += sizeof(file_h);
 322         data_end = data_ptr + le32_to_cpu(file_h.len);
 323
 324         if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
 325                 return -EFAULT;
 326         if (item_type != CSP__HEADER) {
 327                 snd_printd("%s: Invalid RIFF file type\n", __FUNCTION__);
 328                 return -EINVAL;
 329         }
 330         data_ptr += sizeof (item_type);
 331
 332         for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
 333                 if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
 334                         return -EFAULT;
 335                 data_ptr += sizeof(item_h);
 336                 if (item_h.name != LIST_HEADER)
 337                         continue;
 338
 339                 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
 340                          return -EFAULT;
 341                 switch (item_type) {
 342                 case FUNC_HEADER:
 343                         if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
 344                                 return -EFAULT;
 345                         func_nr = le16_to_cpu(funcdesc_h.func_nr);
 346                         break;
 347                 case CODE_HEADER:
 348                         if (func_nr != info.func_req)
 349                                 break;  /* not required function, try next */
 350                         data_ptr += sizeof(item_type);
 351
 352                         /* destroy QSound mixer element */
 353                         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
 354                                 snd_sb_qsound_destroy(p);
 355                         }
 356                         /* Clear all flags */
 357                         p->running = 0;
 358                         p->mode = 0;
 359
 360                         /* load microcode blocks */
 361                         for (;;) {
 362                                 if (data_ptr >= data_end)
 363                                         return -EINVAL;
 364                                 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
 365                                         return -EFAULT;
 366
 367                                 /* init microcode blocks */
 368                                 if (code_h.name != INIT_HEADER)
 369                                         break;
 370                                 data_ptr += sizeof(code_h);
 371                                 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
 372                                                       SNDRV_SB_CSP_LOAD_INITBLOCK);
 373                                 if (err)
 374                                         return err;
 375                                 data_ptr += le32_to_cpu(code_h.len);
 376                         }
 377                         /* main microcode block */
 378                         if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
 379                                 return -EFAULT;
 380
 381                         if (code_h.name != MAIN_HEADER) {
 382                                 snd_printd("%s: Missing 'main' microcode\n", __FUNCTION__);
 383                                 return -EINVAL;
 384                         }
 385                         data_ptr += sizeof(code_h);
 386                         err = snd_sb_csp_load_user(p, data_ptr,
 387                                                    le32_to_cpu(code_h.len), 0);
 388                         if (err)
 389                                 return err;
 390
 391                         /* fill in codec header */
 392                         strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
 393                         p->func_nr = func_nr;
 394                         p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
 395                         switch (le16_to_cpu(funcdesc_h.VOC_type)) {
 396                         case 0x0001:    /* QSound decoder */
 397                                 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
 398                                         if (snd_sb_qsound_build(p) == 0)
 399                                                 /* set QSound flag and clear all other mode flags */
 400                                                 p->mode = SNDRV_SB_CSP_MODE_QSOUND;
 401                                 }
 402                                 p->acc_format = 0;
 403                                 break;
 404                         case 0x0006:    /* A Law codec */
 405                                 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
 406                                 break;
 407                         case 0x0007:    /* Mu Law codec */
 408                                 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
 409                                 break;
 410                         case 0x0011:    /* what Creative thinks is IMA ADPCM codec */
 411                         case 0x0200:    /* Creative ADPCM codec */
 412                                 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
 413                                 break;
 414                         case    201:    /* Text 2 Speech decoder */
 415                                 /* TODO: Text2Speech handling routines */
 416                                 p->acc_format = 0;
 417                                 break;
 418                         case 0x0202:    /* Fast Speech 8 codec */
 419                         case 0x0203:    /* Fast Speech 10 codec */
 420                                 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
 421                                 break;
 422                         default:        /* other codecs are unsupported */
 423                                 p->acc_format = p->acc_width = p->acc_rates = 0;
 424                                 p->mode = 0;
 425                                 snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
 426                                            __FUNCTION__,
 427                                            le16_to_cpu(funcdesc_h.VOC_type));
 428                                 return -EINVAL;
 429                         }
 430                         p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
 431                         p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
 432                         p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
 433
 434                         /* Decouple CSP from IRQ and DMAREQ lines */
 435                         spin_lock_irqsave(&p->chip->reg_lock, flags);
 436                         set_mode_register(p->chip, 0xfc);
 437                         set_mode_register(p->chip, 0x00);
 438                         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 439
 440                         /* finished loading successfully */
 441                         p->running = SNDRV_SB_CSP_ST_LOADED;    /* set LOADED flag */
 442                         return 0;
 443                 }
 444         }
 445         snd_printd("%s: Function #%d not found\n", __FUNCTION__, info.func_req);
 446         return -EINVAL;
 447 }
 448
 449 /*
 450  * unload CSP microcode
 451  */
 452 static int snd_sb_csp_unload(snd_sb_csp_t * p)
 453 {
 454         if (p->running & SNDRV_SB_CSP_ST_RUNNING)
 455                 return -EBUSY;
 456         if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
 457                 return -ENXIO;
 458
 459         /* clear supported formats */
 460         p->acc_format = 0;
 461         p->acc_channels = p->acc_width = p->acc_rates = 0;
 462         /* destroy QSound mixer element */
 463         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
 464                 snd_sb_qsound_destroy(p);
 465         }
 466         /* clear all flags */
 467         p->running = 0;
 468         p->mode = 0;
 469         return 0;
 470 }
 471
 472 /*
 473  * send command sequence to DSP
 474  */
 475 static inline int command_seq(sb_t *chip, const unsigned char *seq, int size)
 476 {
 477         int i;
 478         for (i = 0; i < size; i++) {
 479                 if (!snd_sbdsp_command(chip, seq[i]))
 480                         return -EIO;
 481         }
 482         return 0;
 483 }
 484
 485 /*
 486  * set CSP codec parameter
 487  */
 488 static int set_codec_parameter(sb_t *chip, unsigned char par, unsigned char val)
 489 {
 490         unsigned char dsp_cmd[3];
 491
 492         dsp_cmd[0] = 0x05;      /* CSP set codec parameter */
 493         dsp_cmd[1] = val;       /* Parameter value */
 494         dsp_cmd[2] = par;       /* Parameter */
 495         command_seq(chip, dsp_cmd, 3);
 496         snd_sbdsp_command(chip, 0x03);  /* DSP read? */
 497         if (snd_sbdsp_get_byte(chip) != par)
 498                 return -EIO;
 499         return 0;
 500 }
 501
 502 /*
 503  * set CSP register
 504  */
 505 static int set_register(sb_t *chip, unsigned char reg, unsigned char val)
 506 {
 507         unsigned char dsp_cmd[3];
 508
 509         dsp_cmd[0] = 0x0e;      /* CSP set register */
 510         dsp_cmd[1] = reg;       /* CSP Register */
 511         dsp_cmd[2] = val;       /* value */
 512         return command_seq(chip, dsp_cmd, 3);
 513 }
 514
 515 /*
 516  * read CSP register
 517  * return < 0 -> error
 518  */
 519 static int read_register(sb_t *chip, unsigned char reg)
 520 {
 521         unsigned char dsp_cmd[2];
 522
 523         dsp_cmd[0] = 0x0f;      /* CSP read register */
 524         dsp_cmd[1] = reg;       /* CSP Register */
 525         command_seq(chip, dsp_cmd, 2);
 526         return snd_sbdsp_get_byte(chip);        /* Read DSP value */
 527 }
 528
 529 /*
 530  * set CSP mode register
 531  */
 532 static int set_mode_register(sb_t *chip, unsigned char mode)
 533 {
 534         unsigned char dsp_cmd[2];
 535
 536         dsp_cmd[0] = 0x04;      /* CSP set mode register */
 537         dsp_cmd[1] = mode;      /* mode */
 538         return command_seq(chip, dsp_cmd, 2);
 539 }
 540
 541 /*
 542  * Detect CSP
 543  * return 0 if CSP exists.
 544  */
 545 static int csp_detect(sb_t *chip, int *version)
 546 {
 547         unsigned char csp_test1, csp_test2;
 548         unsigned long flags;
 549         int result = -ENODEV;
 550
 551         spin_lock_irqsave(&chip->reg_lock, flags);
 552
 553         set_codec_parameter(chip, 0x00, 0x00);
 554         set_mode_register(chip, 0xfc);          /* 0xfc = ?? */
 555
 556         csp_test1 = read_register(chip, 0x83);
 557         set_register(chip, 0x83, ~csp_test1);
 558         csp_test2 = read_register(chip, 0x83);
 559         if (csp_test2 != (csp_test1 ^ 0xff))
 560                 goto __fail;
 561
 562         set_register(chip, 0x83, csp_test1);
 563         csp_test2 = read_register(chip, 0x83);
 564         if (csp_test2 != csp_test1)
 565                 goto __fail;
 566
 567         set_mode_register(chip, 0x00);          /* 0x00 = ? */
 568
 569         *version = get_version(chip);
 570         snd_sbdsp_reset(chip);  /* reset DSP after getversion! */
 571         if (*version >= 0x10 && *version <= 0x1f)
 572                 result = 0;             /* valid version id */
 573
 574       __fail:
 575         spin_unlock_irqrestore(&chip->reg_lock, flags);
 576         return result;
 577 }
 578
 579 /*
 580  * get CSP version number
 581  */
 582 static int get_version(sb_t *chip)
 583 {
 584         unsigned char dsp_cmd[2];
 585
 586         dsp_cmd[0] = 0x08;      /* SB_DSP_!something! */
 587         dsp_cmd[1] = 0x03;      /* get chip version id? */
 588         command_seq(chip, dsp_cmd, 2);
 589
 590         return (snd_sbdsp_get_byte(chip));
 591 }
 592
 593 /*
 594  * check if the CSP version is valid
 595  */
 596 static int snd_sb_csp_check_version(snd_sb_csp_t * p)
 597 {
 598         if (p->version < 0x10 || p->version > 0x1f) {
 599                 snd_printd("%s: Invalid CSP version: 0x%x\n", __FUNCTION__, p->version);
 600                 return 1;
 601         }
 602         return 0;
 603 }
 604
 605 /*
 606  * download microcode to CSP (microcode should have one "main" block).
 607  */
 608 static int snd_sb_csp_load(snd_sb_csp_t * p, const unsigned char *buf, int size, int load_flags)
 609 {
 610         int status, i;
 611         int err;
 612         int result = -EIO;
 613         unsigned long flags;
 614
 615         spin_lock_irqsave(&p->chip->reg_lock, flags);
 616         snd_sbdsp_command(p->chip, 0x01);       /* CSP download command */
 617         if (snd_sbdsp_get_byte(p->chip)) {
 618                 snd_printd("%s: Download command failed\n", __FUNCTION__);
 619                 goto __fail;
 620         }
 621         /* Send CSP low byte (size - 1) */
 622         snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
 623         /* Send high byte */
 624         snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
 625         /* send microcode sequence */
 626         /* load from kernel space */
 627         while (size--) {
 628                 if (!snd_sbdsp_command(p->chip, *buf++))
 629                         goto __fail;
 630         }
 631         if (snd_sbdsp_get_byte(p->chip))
 632                 goto __fail;
 633
 634         if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
 635                 i = 0;
 636                 /* some codecs (FastSpeech) take some time to initialize */
 637                 while (1) {
 638                         snd_sbdsp_command(p->chip, 0x03);
 639                         status = snd_sbdsp_get_byte(p->chip);
 640                         if (status == 0x55 || ++i >= 10)
 641                                 break;
 642                         udelay (10);
 643                 }
 644                 if (status != 0x55) {
 645                         snd_printd("%s: Microcode initialization failed\n", __FUNCTION__);
 646                         goto __fail;
 647                 }
 648         } else {
 649                 /*
 650                  * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
 651                  * Start CSP chip if no 16bit DMA channel is set - some kind
 652                  * of autorun or perhaps a bugfix?
 653                  */
 654                 spin_lock(&p->chip->mixer_lock);
 655                 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
 656                 spin_unlock(&p->chip->mixer_lock);
 657                 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
 658                         err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
 659                                set_codec_parameter(p->chip, 0xff, 0x00));
 660                         snd_sbdsp_reset(p->chip);               /* really! */
 661                         if (err)
 662                                 goto __fail;
 663                         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
 664                         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
 665                 }
 666         }
 667         result = 0;
 668
 669       __fail:
 670         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 671         return result;
 672 }
 673
 674 static int snd_sb_csp_load_user(snd_sb_csp_t * p, const unsigned char __user *buf, int size, int load_flags)
 675 {
 676         int err = -ENOMEM;
 677         unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
 678         if (kbuf) {
 679                 if (copy_from_user(kbuf, buf, size))
 680                         err = -EFAULT;
 681                 else
 682                         err = snd_sb_csp_load(p, kbuf, size, load_flags);
 683                 kfree(kbuf);
 684         }
 685         return err;
 686 }
 687
 688 #include "sb16_csp_codecs.h"
 689
 690 /*
 691  * autoload hardware codec if necessary
 692  * return 0 if CSP is loaded and ready to run (p->running != 0)
 693  */
 694 static int snd_sb_csp_autoload(snd_sb_csp_t * p, int pcm_sfmt, int play_rec_mode)
 695 {
 696         unsigned long flags;
 697         int err = 0;
 698
 699         /* if CSP is running or manually loaded then exit */
 700         if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED))
 701                 return -EBUSY;
 702
 703         /* autoload microcode only if requested hardware codec is not already loaded */
 704         if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
 705                 p->running = SNDRV_SB_CSP_ST_AUTO;
 706         } else {
 707                 switch (pcm_sfmt) {
 708                 case SNDRV_PCM_FORMAT_MU_LAW:
 709                         err = snd_sb_csp_load(p, &mulaw_main[0], sizeof(mulaw_main), 0);
 710                         p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
 711                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
 712                         break;
 713                 case SNDRV_PCM_FORMAT_A_LAW:
 714                         err = snd_sb_csp_load(p, &alaw_main[0], sizeof(alaw_main), 0);
 715                         p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
 716                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
 717                         break;
 718                 case SNDRV_PCM_FORMAT_IMA_ADPCM:
 719                         err = snd_sb_csp_load(p, &ima_adpcm_init[0], sizeof(ima_adpcm_init),
 720                                               SNDRV_SB_CSP_LOAD_INITBLOCK);
 721                         if (err)
 722                                 break;
 723                         if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
 724                                 err = snd_sb_csp_load(p, &ima_adpcm_playback[0],
 725                                                       sizeof(ima_adpcm_playback), 0);
 726                                 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
 727                         } else {
 728                                 err = snd_sb_csp_load(p, &ima_adpcm_capture[0],
 729                                                       sizeof(ima_adpcm_capture), 0);
 730                                 p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
 731                         }
 732                         p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
 733                         break;
 734                 default:
 735                         /* Decouple CSP from IRQ and DMAREQ lines */
 736                         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
 737                                 spin_lock_irqsave(&p->chip->reg_lock, flags);
 738                                 set_mode_register(p->chip, 0xfc);
 739                                 set_mode_register(p->chip, 0x00);
 740                                 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 741                                 p->running = 0;                 /* clear autoloaded flag */
 742                         }
 743                         return -EINVAL;
 744                 }
 745                 if (err) {
 746                         p->acc_format = 0;
 747                         p->acc_channels = p->acc_width = p->acc_rates = 0;
 748
 749                         p->running = 0;                         /* clear autoloaded flag */
 750                         p->mode = 0;
 751                         return (err);
 752                 } else {
 753                         p->running = SNDRV_SB_CSP_ST_AUTO;      /* set autoloaded flag */
 754                         p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT;       /* only 16 bit data */
 755                         p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
 756                         p->acc_rates = SNDRV_SB_CSP_RATE_ALL;   /* HW codecs accept all rates */
 757                 }
 758
 759         }
 760         return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
 761 }
 762
 763 /*
 764  * start CSP
 765  */
 766 static int snd_sb_csp_start(snd_sb_csp_t * p, int sample_width, int channels)
 767 {
 768         unsigned char s_type;   /* sample type */
 769         unsigned char mixL, mixR;
 770         int result = -EIO;
 771         unsigned long flags;
 772
 773         if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
 774                 snd_printd("%s: Microcode not loaded\n", __FUNCTION__);
 775                 return -ENXIO;
 776         }
 777         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
 778                 snd_printd("%s: CSP already running\n", __FUNCTION__);
 779                 return -EBUSY;
 780         }
 781         if (!(sample_width & p->acc_width)) {
 782                 snd_printd("%s: Unsupported PCM sample width\n", __FUNCTION__);
 783                 return -EINVAL;
 784         }
 785         if (!(channels & p->acc_channels)) {
 786                 snd_printd("%s: Invalid number of channels\n", __FUNCTION__);
 787                 return -EINVAL;
 788         }
 789
 790         /* Mute PCM volume */
 791         spin_lock_irqsave(&p->chip->mixer_lock, flags);
 792         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
 793         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
 794         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
 795         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
 796
 797         spin_lock(&p->chip->reg_lock);
 798         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
 799         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
 800
 801         s_type = 0x00;
 802         if (channels == SNDRV_SB_CSP_MONO)
 803                 s_type = 0x11;  /* 000n 000n    (n = 1 if mono) */
 804         if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
 805                 s_type |= 0x22; /* 00dX 00dX    (d = 1 if 8 bit samples) */
 806
 807         if (set_codec_parameter(p->chip, 0x81, s_type)) {
 808                 snd_printd("%s: Set sample type command failed\n", __FUNCTION__);
 809                 goto __fail;
 810         }
 811         if (set_codec_parameter(p->chip, 0x80, 0x00)) {
 812                 snd_printd("%s: Codec start command failed\n", __FUNCTION__);
 813                 goto __fail;
 814         }
 815         p->run_width = sample_width;
 816         p->run_channels = channels;
 817
 818         p->running |= SNDRV_SB_CSP_ST_RUNNING;
 819
 820         if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
 821                 set_codec_parameter(p->chip, 0xe0, 0x01);
 822                 /* enable QSound decoder */
 823                 set_codec_parameter(p->chip, 0x00, 0xff);
 824                 set_codec_parameter(p->chip, 0x01, 0xff);
 825                 p->running |= SNDRV_SB_CSP_ST_QSOUND;
 826                 /* set QSound startup value */
 827                 snd_sb_csp_qsound_transfer(p);
 828         }
 829         result = 0;
 830
 831       __fail:
 832         spin_unlock(&p->chip->reg_lock);
 833
 834         /* restore PCM volume */
 835         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
 836         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
 837         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
 838
 839         return result;
 840 }
 841
 842 /*
 843  * stop CSP
 844  */
 845 static int snd_sb_csp_stop(snd_sb_csp_t * p)
 846 {
 847         int result;
 848         unsigned char mixL, mixR;
 849         unsigned long flags;
 850
 851         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
 852                 return 0;
 853
 854         /* Mute PCM volume */
 855         spin_lock_irqsave(&p->chip->mixer_lock, flags);
 856         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
 857         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
 858         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
 859         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
 860
 861         spin_lock(&p->chip->reg_lock);
 862         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
 863                 set_codec_parameter(p->chip, 0xe0, 0x01);
 864                 /* disable QSound decoder */
 865                 set_codec_parameter(p->chip, 0x00, 0x00);
 866                 set_codec_parameter(p->chip, 0x01, 0x00);
 867
 868                 p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
 869         }
 870         result = set_mode_register(p->chip, 0xc0);      /* c0 = STOP */
 871         spin_unlock(&p->chip->reg_lock);
 872
 873         /* restore PCM volume */
 874         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
 875         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
 876         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
 877
 878         if (!(result))
 879                 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
 880         return result;
 881 }
 882
 883 /*
 884  * pause CSP codec and hold DMA transfer
 885  */
 886 static int snd_sb_csp_pause(snd_sb_csp_t * p)
 887 {
 888         int result;
 889         unsigned long flags;
 890
 891         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
 892                 return -EBUSY;
 893
 894         spin_lock_irqsave(&p->chip->reg_lock, flags);
 895         result = set_codec_parameter(p->chip, 0x80, 0xff);
 896         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 897         if (!(result))
 898                 p->running |= SNDRV_SB_CSP_ST_PAUSED;
 899
 900         return result;
 901 }
 902
 903 /*
 904  * restart CSP codec and resume DMA transfer
 905  */
 906 static int snd_sb_csp_restart(snd_sb_csp_t * p)
 907 {
 908         int result;
 909         unsigned long flags;
 910
 911         if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
 912                 return -EBUSY;
 913
 914         spin_lock_irqsave(&p->chip->reg_lock, flags);
 915         result = set_codec_parameter(p->chip, 0x80, 0x00);
 916         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 917         if (!(result))
 918                 p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
 919
 920         return result;
 921 }
 922
 923 /* ------------------------------ */
 924
 925 /*
 926  * QSound mixer control for PCM
 927  */
 928
 929 static int snd_sb_qsound_switch_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 930 {
 931         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 932         uinfo->count = 1;
 933         uinfo->value.integer.min = 0;
 934         uinfo->value.integer.max = 1;
 935         return 0;
 936 }
 937
 938 static int snd_sb_qsound_switch_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 939 {
 940         snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
 941
 942         ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
 943         return 0;
 944 }
 945
 946 static int snd_sb_qsound_switch_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 947 {
 948         snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
 949         unsigned long flags;
 950         int change;
 951         unsigned char nval;
 952
 953         nval = ucontrol->value.integer.value[0] & 0x01;
 954         spin_lock_irqsave(&p->q_lock, flags);
 955         change = p->q_enabled != nval;
 956         p->q_enabled = nval;
 957         spin_unlock_irqrestore(&p->q_lock, flags);
 958         return change;
 959 }
 960
 961 static int snd_sb_qsound_space_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 962 {
 963         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 964         uinfo->count = 2;
 965         uinfo->value.integer.min = 0;
 966         uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
 967         return 0;
 968 }
 969
 970 static int snd_sb_qsound_space_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 971 {
 972         snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
 973         unsigned long flags;
 974
 975         spin_lock_irqsave(&p->q_lock, flags);
 976         ucontrol->value.integer.value[0] = p->qpos_left;
 977         ucontrol->value.integer.value[1] = p->qpos_right;
 978         spin_unlock_irqrestore(&p->q_lock, flags);
 979         return 0;
 980 }
 981
 982 static int snd_sb_qsound_space_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 983 {
 984         snd_sb_csp_t *p = snd_kcontrol_chip(kcontrol);
 985         unsigned long flags;
 986         int change;
 987         unsigned char nval1, nval2;
 988
 989         nval1 = ucontrol->value.integer.value[0];
 990         if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
 991                 nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
 992         nval2 = ucontrol->value.integer.value[1];
 993         if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
 994                 nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
 995         spin_lock_irqsave(&p->q_lock, flags);
 996         change = p->qpos_left != nval1 || p->qpos_right != nval2;
 997         p->qpos_left = nval1;
 998         p->qpos_right = nval2;
 999         p->qpos_changed = change;
1000         spin_unlock_irqrestore(&p->q_lock, flags);
1001         return change;
1002 }
1003
1004 static snd_kcontrol_new_t snd_sb_qsound_switch = {
1005         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1006         .name = "3D Control - Switch",
1007         .info = snd_sb_qsound_switch_info,
1008         .get = snd_sb_qsound_switch_get,
1009         .put = snd_sb_qsound_switch_put
1010 };
1011
1012 static snd_kcontrol_new_t snd_sb_qsound_space = {
1013         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1014         .name = "3D Control - Space",
1015         .info = snd_sb_qsound_space_info,
1016         .get = snd_sb_qsound_space_get,
1017         .put = snd_sb_qsound_space_put
1018 };
1019
1020 static int snd_sb_qsound_build(snd_sb_csp_t * p)
1021 {
1022         snd_card_t * card;
1023         int err;
1024
1025         snd_assert(p != NULL, return -EINVAL);
1026
1027         card = p->chip->card;
1028         p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1029         p->qpos_changed = 0;
1030
1031         spin_lock_init(&p->q_lock);
1032
1033         if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
1034                 goto __error;
1035         if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
1036                 goto __error;
1037
1038         return 0;
1039
1040      __error:
1041         snd_sb_qsound_destroy(p);
1042         return err;
1043 }
1044
1045 static void snd_sb_qsound_destroy(snd_sb_csp_t * p)
1046 {
1047         snd_card_t * card;
1048         unsigned long flags;
1049
1050         snd_assert(p != NULL, return);
1051
1052         card = p->chip->card;
1053
1054         down_write(&card->controls_rwsem);
1055         if (p->qsound_switch)
1056                 snd_ctl_remove(card, p->qsound_switch);
1057         if (p->qsound_space)
1058                 snd_ctl_remove(card, p->qsound_space);
1059         up_write(&card->controls_rwsem);
1060
1061         /* cancel pending transfer of QSound parameters */
1062         spin_lock_irqsave (&p->q_lock, flags);
1063         p->qpos_changed = 0;
1064         spin_unlock_irqrestore (&p->q_lock, flags);
1065 }
1066
1067 /*
1068  * Transfer qsound parameters to CSP,
1069  * function should be called from interrupt routine
1070  */
1071 static int snd_sb_csp_qsound_transfer(snd_sb_csp_t * p)
1072 {
1073         int err = -ENXIO;
1074
1075         spin_lock(&p->q_lock);
1076         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1077                 set_codec_parameter(p->chip, 0xe0, 0x01);
1078                 /* left channel */
1079                 set_codec_parameter(p->chip, 0x00, p->qpos_left);
1080                 set_codec_parameter(p->chip, 0x02, 0x00);
1081                 /* right channel */
1082                 set_codec_parameter(p->chip, 0x00, p->qpos_right);
1083                 set_codec_parameter(p->chip, 0x03, 0x00);
1084                 err = 0;
1085         }
1086         p->qpos_changed = 0;
1087         spin_unlock(&p->q_lock);
1088         return err;
1089 }
1090
1091 /* ------------------------------ */
1092
1093 /*
1094  * proc interface
1095  */
1096 static int init_proc_entry(snd_sb_csp_t * p, int device)
1097 {
1098         char name[16];
1099         snd_info_entry_t *entry;
1100         sprintf(name, "cspD%d", device);
1101         if (! snd_card_proc_new(p->chip->card, name, &entry))
1102                 snd_info_set_text_ops(entry, p, 1024, info_read);
1103         return 0;
1104 }
1105
1106 static void info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
1107 {
1108         snd_sb_csp_t *p = entry->private_data;
1109
1110         snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1111         snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1112                     ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1113                     ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1114                     ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1115         if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1116                 snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1117                 snd_iprintf(buffer, "Sample rates: ");
1118                 if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1119                         snd_iprintf(buffer, "All\n");
1120                 } else {
1121                         snd_iprintf(buffer, "%s%s%s%s\n",
1122                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1123                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1124                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1125                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1126                 }
1127                 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1128                         snd_iprintf(buffer, "QSound decoder %sabled\n",
1129                                     p->q_enabled ? "en" : "dis");
1130                 } else {
1131                         snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1132                                     p->acc_format,
1133                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1134                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1135                                     ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1136                                     ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1137                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1138                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1139                 }
1140         }
1141         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1142                 snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1143         }
1144         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1145                 snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1146                             ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1147                             ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1148         }
1149         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1150                 snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1151                             p->qpos_left, p->qpos_right);
1152         }
1153 }
1154
1155 /* */
1156
1157 EXPORT_SYMBOL(snd_sb_csp_new);
1158
1159 /*
1160  * INIT part
1161  */
1162
1163 static int __init alsa_sb_csp_init(void)
1164 {
1165         return 0;
1166 }
1167
1168 static void __exit alsa_sb_csp_exit(void)
1169 {
1170 }
1171
1172 module_init(alsa_sb_csp_init)
1173 module_exit(alsa_sb_csp_exit)