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(struct snd_hwdep *hw);
  76 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
  77 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
  78 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
  79
  80 static int csp_detect(struct snd_sb *chip, int *version);
  81 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
  82 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
  83 static int read_register(struct snd_sb *chip, unsigned char reg);
  84 static int set_mode_register(struct snd_sb *chip, unsigned char mode);
  85 static int get_version(struct snd_sb *chip);
  86
  87 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
  88                                 struct snd_sb_csp_microcode __user * code);
  89 static int snd_sb_csp_unload(struct snd_sb_csp * p);
  90 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
  91 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
  92 static int snd_sb_csp_check_version(struct snd_sb_csp * p);
  93
  94 static int snd_sb_csp_use(struct snd_sb_csp * p);
  95 static int snd_sb_csp_unuse(struct snd_sb_csp * p);
  96 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
  97 static int snd_sb_csp_stop(struct snd_sb_csp * p);
  98 static int snd_sb_csp_pause(struct snd_sb_csp * p);
  99 static int snd_sb_csp_restart(struct snd_sb_csp * p);
 100
 101 static int snd_sb_qsound_build(struct snd_sb_csp * p);
 102 static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
 103 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
 104
 105 static int init_proc_entry(struct snd_sb_csp * p, int device);
 106 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
 107
 108 /*
 109  * Detect CSP chip and create a new instance
 110  */
 111 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
 112 {
 113         struct snd_sb_csp *p;
 114         int version, err;
 115         struct snd_hwdep *hw;
 116
 117         if (rhwdep)
 118                 *rhwdep = NULL;
 119
 120         if (csp_detect(chip, &version))
 121                 return -ENODEV;
 122
 123         if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
 124                 return err;
 125
 126         if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
 127                 snd_device_free(chip->card, hw);
 128                 return -ENOMEM;
 129         }
 130         p->chip = chip;
 131         p->version = version;
 132
 133         /* CSP operators */
 134         p->ops.csp_use = snd_sb_csp_use;
 135         p->ops.csp_unuse = snd_sb_csp_unuse;
 136         p->ops.csp_autoload = snd_sb_csp_autoload;
 137         p->ops.csp_start = snd_sb_csp_start;
 138         p->ops.csp_stop = snd_sb_csp_stop;
 139         p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
 140
 141         mutex_init(&p->access_mutex);
 142         sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
 143         hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
 144         hw->private_data = p;
 145         hw->private_free = snd_sb_csp_free;
 146
 147         /* operators - only write/ioctl */
 148         hw->ops.open = snd_sb_csp_open;
 149         hw->ops.ioctl = snd_sb_csp_ioctl;
 150         hw->ops.release = snd_sb_csp_release;
 151
 152         /* create a proc entry */
 153         init_proc_entry(p, device);
 154         if (rhwdep)
 155                 *rhwdep = hw;
 156         return 0;
 157 }
 158
 159 /*
 160  * free_private for hwdep instance
 161  */
 162 static void snd_sb_csp_free(struct snd_hwdep *hwdep)
 163 {
 164 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
 165         int i;
 166 #endif
 167         struct snd_sb_csp *p = hwdep->private_data;
 168         if (p) {
 169                 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
 170                         snd_sb_csp_stop(p);
 171 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
 172                 for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
 173                         release_firmware(p->csp_programs[i]);
 174 #endif
 175                 kfree(p);
 176         }
 177 }
 178
 179 /* ------------------------------ */
 180
 181 /*
 182  * open the device exclusively
 183  */
 184 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
 185 {
 186         struct snd_sb_csp *p = hw->private_data;
 187         return (snd_sb_csp_use(p));
 188 }
 189
 190 /*
 191  * ioctl for hwdep device:
 192  */
 193 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
 194 {
 195         struct snd_sb_csp *p = hw->private_data;
 196         struct snd_sb_csp_info info;
 197         struct snd_sb_csp_start start_info;
 198         int err;
 199
 200         snd_assert(p != NULL, return -EINVAL);
 201
 202         if (snd_sb_csp_check_version(p))
 203                 return -ENODEV;
 204
 205         switch (cmd) {
 206                 /* get information */
 207         case SNDRV_SB_CSP_IOCTL_INFO:
 208                 *info.codec_name = *p->codec_name;
 209                 info.func_nr = p->func_nr;
 210                 info.acc_format = p->acc_format;
 211                 info.acc_channels = p->acc_channels;
 212                 info.acc_width = p->acc_width;
 213                 info.acc_rates = p->acc_rates;
 214                 info.csp_mode = p->mode;
 215                 info.run_channels = p->run_channels;
 216                 info.run_width = p->run_width;
 217                 info.version = p->version;
 218                 info.state = p->running;
 219                 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
 220                         err = -EFAULT;
 221                 else
 222                         err = 0;
 223                 break;
 224
 225                 /* load CSP microcode */
 226         case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
 227                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
 228                        -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
 229                 break;
 230         case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
 231                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
 232                        -EBUSY : snd_sb_csp_unload(p));
 233                 break;
 234
 235                 /* change CSP running state */
 236         case SNDRV_SB_CSP_IOCTL_START:
 237                 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
 238                         err = -EFAULT;
 239                 else
 240                         err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
 241                 break;
 242         case SNDRV_SB_CSP_IOCTL_STOP:
 243                 err = snd_sb_csp_stop(p);
 244                 break;
 245         case SNDRV_SB_CSP_IOCTL_PAUSE:
 246                 err = snd_sb_csp_pause(p);
 247                 break;
 248         case SNDRV_SB_CSP_IOCTL_RESTART:
 249                 err = snd_sb_csp_restart(p);
 250                 break;
 251         default:
 252                 err = -ENOTTY;
 253                 break;
 254         }
 255
 256         return err;
 257 }
 258
 259 /*
 260  * close the device
 261  */
 262 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
 263 {
 264         struct snd_sb_csp *p = hw->private_data;
 265         return (snd_sb_csp_unuse(p));
 266 }
 267
 268 /* ------------------------------ */
 269
 270 /*
 271  * acquire device
 272  */
 273 static int snd_sb_csp_use(struct snd_sb_csp * p)
 274 {
 275         mutex_lock(&p->access_mutex);
 276         if (p->used) {
 277                 mutex_unlock(&p->access_mutex);
 278                 return -EAGAIN;
 279         }
 280         p->used++;
 281         mutex_unlock(&p->access_mutex);
 282
 283         return 0;
 284
 285 }
 286
 287 /*
 288  * release device
 289  */
 290 static int snd_sb_csp_unuse(struct snd_sb_csp * p)
 291 {
 292         mutex_lock(&p->access_mutex);
 293         p->used--;
 294         mutex_unlock(&p->access_mutex);
 295
 296         return 0;
 297 }
 298
 299 /*
 300  * load microcode via ioctl:
 301  * code is user-space pointer
 302  */
 303 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
 304                                 struct snd_sb_csp_microcode __user * mcode)
 305 {
 306         struct snd_sb_csp_mc_header info;
 307
 308         unsigned char __user *data_ptr;
 309         unsigned char __user *data_end;
 310         unsigned short func_nr = 0;
 311
 312         struct riff_header file_h, item_h, code_h;
 313         __u32 item_type;
 314         struct desc_header funcdesc_h;
 315
 316         unsigned long flags;
 317         int err;
 318
 319         if (copy_from_user(&info, mcode, sizeof(info)))
 320                 return -EFAULT;
 321         data_ptr = mcode->data;
 322
 323         if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
 324                 return -EFAULT;
 325         if ((file_h.name != RIFF_HEADER) ||
 326             (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
 327                 snd_printd("%s: Invalid RIFF header\n", __FUNCTION__);
 328                 return -EINVAL;
 329         }
 330         data_ptr += sizeof(file_h);
 331         data_end = data_ptr + le32_to_cpu(file_h.len);
 332
 333         if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
 334                 return -EFAULT;
 335         if (item_type != CSP__HEADER) {
 336                 snd_printd("%s: Invalid RIFF file type\n", __FUNCTION__);
 337                 return -EINVAL;
 338         }
 339         data_ptr += sizeof (item_type);
 340
 341         for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
 342                 if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
 343                         return -EFAULT;
 344                 data_ptr += sizeof(item_h);
 345                 if (item_h.name != LIST_HEADER)
 346                         continue;
 347
 348                 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
 349                          return -EFAULT;
 350                 switch (item_type) {
 351                 case FUNC_HEADER:
 352                         if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
 353                                 return -EFAULT;
 354                         func_nr = le16_to_cpu(funcdesc_h.func_nr);
 355                         break;
 356                 case CODE_HEADER:
 357                         if (func_nr != info.func_req)
 358                                 break;  /* not required function, try next */
 359                         data_ptr += sizeof(item_type);
 360
 361                         /* destroy QSound mixer element */
 362                         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
 363                                 snd_sb_qsound_destroy(p);
 364                         }
 365                         /* Clear all flags */
 366                         p->running = 0;
 367                         p->mode = 0;
 368
 369                         /* load microcode blocks */
 370                         for (;;) {
 371                                 if (data_ptr >= data_end)
 372                                         return -EINVAL;
 373                                 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
 374                                         return -EFAULT;
 375
 376                                 /* init microcode blocks */
 377                                 if (code_h.name != INIT_HEADER)
 378                                         break;
 379                                 data_ptr += sizeof(code_h);
 380                                 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
 381                                                       SNDRV_SB_CSP_LOAD_INITBLOCK);
 382                                 if (err)
 383                                         return err;
 384                                 data_ptr += le32_to_cpu(code_h.len);
 385                         }
 386                         /* main microcode block */
 387                         if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
 388                                 return -EFAULT;
 389
 390                         if (code_h.name != MAIN_HEADER) {
 391                                 snd_printd("%s: Missing 'main' microcode\n", __FUNCTION__);
 392                                 return -EINVAL;
 393                         }
 394                         data_ptr += sizeof(code_h);
 395                         err = snd_sb_csp_load_user(p, data_ptr,
 396                                                    le32_to_cpu(code_h.len), 0);
 397                         if (err)
 398                                 return err;
 399
 400                         /* fill in codec header */
 401                         strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
 402                         p->func_nr = func_nr;
 403                         p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
 404                         switch (le16_to_cpu(funcdesc_h.VOC_type)) {
 405                         case 0x0001:    /* QSound decoder */
 406                                 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
 407                                         if (snd_sb_qsound_build(p) == 0)
 408                                                 /* set QSound flag and clear all other mode flags */
 409                                                 p->mode = SNDRV_SB_CSP_MODE_QSOUND;
 410                                 }
 411                                 p->acc_format = 0;
 412                                 break;
 413                         case 0x0006:    /* A Law codec */
 414                                 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
 415                                 break;
 416                         case 0x0007:    /* Mu Law codec */
 417                                 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
 418                                 break;
 419                         case 0x0011:    /* what Creative thinks is IMA ADPCM codec */
 420                         case 0x0200:    /* Creative ADPCM codec */
 421                                 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
 422                                 break;
 423                         case    201:    /* Text 2 Speech decoder */
 424                                 /* TODO: Text2Speech handling routines */
 425                                 p->acc_format = 0;
 426                                 break;
 427                         case 0x0202:    /* Fast Speech 8 codec */
 428                         case 0x0203:    /* Fast Speech 10 codec */
 429                                 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
 430                                 break;
 431                         default:        /* other codecs are unsupported */
 432                                 p->acc_format = p->acc_width = p->acc_rates = 0;
 433                                 p->mode = 0;
 434                                 snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
 435                                            __FUNCTION__,
 436                                            le16_to_cpu(funcdesc_h.VOC_type));
 437                                 return -EINVAL;
 438                         }
 439                         p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
 440                         p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
 441                         p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
 442
 443                         /* Decouple CSP from IRQ and DMAREQ lines */
 444                         spin_lock_irqsave(&p->chip->reg_lock, flags);
 445                         set_mode_register(p->chip, 0xfc);
 446                         set_mode_register(p->chip, 0x00);
 447                         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 448
 449                         /* finished loading successfully */
 450                         p->running = SNDRV_SB_CSP_ST_LOADED;    /* set LOADED flag */
 451                         return 0;
 452                 }
 453         }
 454         snd_printd("%s: Function #%d not found\n", __FUNCTION__, info.func_req);
 455         return -EINVAL;
 456 }
 457
 458 /*
 459  * unload CSP microcode
 460  */
 461 static int snd_sb_csp_unload(struct snd_sb_csp * p)
 462 {
 463         if (p->running & SNDRV_SB_CSP_ST_RUNNING)
 464                 return -EBUSY;
 465         if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
 466                 return -ENXIO;
 467
 468         /* clear supported formats */
 469         p->acc_format = 0;
 470         p->acc_channels = p->acc_width = p->acc_rates = 0;
 471         /* destroy QSound mixer element */
 472         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
 473                 snd_sb_qsound_destroy(p);
 474         }
 475         /* clear all flags */
 476         p->running = 0;
 477         p->mode = 0;
 478         return 0;
 479 }
 480
 481 /*
 482  * send command sequence to DSP
 483  */
 484 static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
 485 {
 486         int i;
 487         for (i = 0; i < size; i++) {
 488                 if (!snd_sbdsp_command(chip, seq[i]))
 489                         return -EIO;
 490         }
 491         return 0;
 492 }
 493
 494 /*
 495  * set CSP codec parameter
 496  */
 497 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
 498 {
 499         unsigned char dsp_cmd[3];
 500
 501         dsp_cmd[0] = 0x05;      /* CSP set codec parameter */
 502         dsp_cmd[1] = val;       /* Parameter value */
 503         dsp_cmd[2] = par;       /* Parameter */
 504         command_seq(chip, dsp_cmd, 3);
 505         snd_sbdsp_command(chip, 0x03);  /* DSP read? */
 506         if (snd_sbdsp_get_byte(chip) != par)
 507                 return -EIO;
 508         return 0;
 509 }
 510
 511 /*
 512  * set CSP register
 513  */
 514 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
 515 {
 516         unsigned char dsp_cmd[3];
 517
 518         dsp_cmd[0] = 0x0e;      /* CSP set register */
 519         dsp_cmd[1] = reg;       /* CSP Register */
 520         dsp_cmd[2] = val;       /* value */
 521         return command_seq(chip, dsp_cmd, 3);
 522 }
 523
 524 /*
 525  * read CSP register
 526  * return < 0 -> error
 527  */
 528 static int read_register(struct snd_sb *chip, unsigned char reg)
 529 {
 530         unsigned char dsp_cmd[2];
 531
 532         dsp_cmd[0] = 0x0f;      /* CSP read register */
 533         dsp_cmd[1] = reg;       /* CSP Register */
 534         command_seq(chip, dsp_cmd, 2);
 535         return snd_sbdsp_get_byte(chip);        /* Read DSP value */
 536 }
 537
 538 /*
 539  * set CSP mode register
 540  */
 541 static int set_mode_register(struct snd_sb *chip, unsigned char mode)
 542 {
 543         unsigned char dsp_cmd[2];
 544
 545         dsp_cmd[0] = 0x04;      /* CSP set mode register */
 546         dsp_cmd[1] = mode;      /* mode */
 547         return command_seq(chip, dsp_cmd, 2);
 548 }
 549
 550 /*
 551  * Detect CSP
 552  * return 0 if CSP exists.
 553  */
 554 static int csp_detect(struct snd_sb *chip, int *version)
 555 {
 556         unsigned char csp_test1, csp_test2;
 557         unsigned long flags;
 558         int result = -ENODEV;
 559
 560         spin_lock_irqsave(&chip->reg_lock, flags);
 561
 562         set_codec_parameter(chip, 0x00, 0x00);
 563         set_mode_register(chip, 0xfc);          /* 0xfc = ?? */
 564
 565         csp_test1 = read_register(chip, 0x83);
 566         set_register(chip, 0x83, ~csp_test1);
 567         csp_test2 = read_register(chip, 0x83);
 568         if (csp_test2 != (csp_test1 ^ 0xff))
 569                 goto __fail;
 570
 571         set_register(chip, 0x83, csp_test1);
 572         csp_test2 = read_register(chip, 0x83);
 573         if (csp_test2 != csp_test1)
 574                 goto __fail;
 575
 576         set_mode_register(chip, 0x00);          /* 0x00 = ? */
 577
 578         *version = get_version(chip);
 579         snd_sbdsp_reset(chip);  /* reset DSP after getversion! */
 580         if (*version >= 0x10 && *version <= 0x1f)
 581                 result = 0;             /* valid version id */
 582
 583       __fail:
 584         spin_unlock_irqrestore(&chip->reg_lock, flags);
 585         return result;
 586 }
 587
 588 /*
 589  * get CSP version number
 590  */
 591 static int get_version(struct snd_sb *chip)
 592 {
 593         unsigned char dsp_cmd[2];
 594
 595         dsp_cmd[0] = 0x08;      /* SB_DSP_!something! */
 596         dsp_cmd[1] = 0x03;      /* get chip version id? */
 597         command_seq(chip, dsp_cmd, 2);
 598
 599         return (snd_sbdsp_get_byte(chip));
 600 }
 601
 602 /*
 603  * check if the CSP version is valid
 604  */
 605 static int snd_sb_csp_check_version(struct snd_sb_csp * p)
 606 {
 607         if (p->version < 0x10 || p->version > 0x1f) {
 608                 snd_printd("%s: Invalid CSP version: 0x%x\n", __FUNCTION__, p->version);
 609                 return 1;
 610         }
 611         return 0;
 612 }
 613
 614 /*
 615  * download microcode to CSP (microcode should have one "main" block).
 616  */
 617 static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
 618 {
 619         int status, i;
 620         int err;
 621         int result = -EIO;
 622         unsigned long flags;
 623
 624         spin_lock_irqsave(&p->chip->reg_lock, flags);
 625         snd_sbdsp_command(p->chip, 0x01);       /* CSP download command */
 626         if (snd_sbdsp_get_byte(p->chip)) {
 627                 snd_printd("%s: Download command failed\n", __FUNCTION__);
 628                 goto __fail;
 629         }
 630         /* Send CSP low byte (size - 1) */
 631         snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
 632         /* Send high byte */
 633         snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
 634         /* send microcode sequence */
 635         /* load from kernel space */
 636         while (size--) {
 637                 if (!snd_sbdsp_command(p->chip, *buf++))
 638                         goto __fail;
 639         }
 640         if (snd_sbdsp_get_byte(p->chip))
 641                 goto __fail;
 642
 643         if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
 644                 i = 0;
 645                 /* some codecs (FastSpeech) take some time to initialize */
 646                 while (1) {
 647                         snd_sbdsp_command(p->chip, 0x03);
 648                         status = snd_sbdsp_get_byte(p->chip);
 649                         if (status == 0x55 || ++i >= 10)
 650                                 break;
 651                         udelay (10);
 652                 }
 653                 if (status != 0x55) {
 654                         snd_printd("%s: Microcode initialization failed\n", __FUNCTION__);
 655                         goto __fail;
 656                 }
 657         } else {
 658                 /*
 659                  * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
 660                  * Start CSP chip if no 16bit DMA channel is set - some kind
 661                  * of autorun or perhaps a bugfix?
 662                  */
 663                 spin_lock(&p->chip->mixer_lock);
 664                 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
 665                 spin_unlock(&p->chip->mixer_lock);
 666                 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
 667                         err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
 668                                set_codec_parameter(p->chip, 0xff, 0x00));
 669                         snd_sbdsp_reset(p->chip);               /* really! */
 670                         if (err)
 671                                 goto __fail;
 672                         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
 673                         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
 674                 }
 675         }
 676         result = 0;
 677
 678       __fail:
 679         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 680         return result;
 681 }
 682
 683 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
 684 {
 685         int err = -ENOMEM;
 686         unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
 687         if (kbuf) {
 688                 if (copy_from_user(kbuf, buf, size))
 689                         err = -EFAULT;
 690                 else
 691                         err = snd_sb_csp_load(p, kbuf, size, load_flags);
 692                 kfree(kbuf);
 693         }
 694         return err;
 695 }
 696
 697 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
 698 #include "sb16_csp_codecs.h"
 699
 700 static const struct firmware snd_sb_csp_static_programs[] = {
 701         { .data = mulaw_main, .size = sizeof mulaw_main },
 702         { .data = alaw_main, .size = sizeof alaw_main },
 703         { .data = ima_adpcm_init, .size = sizeof ima_adpcm_init },
 704         { .data = ima_adpcm_playback, .size = sizeof ima_adpcm_playback },
 705         { .data = ima_adpcm_capture, .size = sizeof ima_adpcm_capture },
 706 };
 707 #endif
 708
 709 static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
 710 {
 711         static const char *const names[] = {
 712                 "sb16/mulaw_main.csp",
 713                 "sb16/alaw_main.csp",
 714                 "sb16/ima_adpcm_init.csp",
 715                 "sb16/ima_adpcm_playback.csp",
 716                 "sb16/ima_adpcm_capture.csp",
 717         };
 718         const struct firmware *program;
 719
 720         BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
 721         program = p->csp_programs[index];
 722         if (!program) {
 723 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
 724                 program = &snd_sb_csp_static_programs[index];
 725 #else
 726                 int err = request_firmware(&program, names[index],
 727                                        p->chip->card->dev);
 728                 if (err < 0)
 729                         return err;
 730 #endif
 731                 p->csp_programs[index] = program;
 732         }
 733         return snd_sb_csp_load(p, program->data, program->size, flags);
 734 }
 735
 736 /*
 737  * autoload hardware codec if necessary
 738  * return 0 if CSP is loaded and ready to run (p->running != 0)
 739  */
 740 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode)
 741 {
 742         unsigned long flags;
 743         int err = 0;
 744
 745         /* if CSP is running or manually loaded then exit */
 746         if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED))
 747                 return -EBUSY;
 748
 749         /* autoload microcode only if requested hardware codec is not already loaded */
 750         if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
 751                 p->running = SNDRV_SB_CSP_ST_AUTO;
 752         } else {
 753                 switch (pcm_sfmt) {
 754                 case SNDRV_PCM_FORMAT_MU_LAW:
 755                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
 756                         p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
 757                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
 758                         break;
 759                 case SNDRV_PCM_FORMAT_A_LAW:
 760                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
 761                         p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
 762                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
 763                         break;
 764                 case SNDRV_PCM_FORMAT_IMA_ADPCM:
 765                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
 766                                                        SNDRV_SB_CSP_LOAD_INITBLOCK);
 767                         if (err)
 768                                 break;
 769                         if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
 770                                 err = snd_sb_csp_firmware_load
 771                                         (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
 772                                 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
 773                         } else {
 774                                 err = snd_sb_csp_firmware_load
 775                                         (p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
 776                                 p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
 777                         }
 778                         p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
 779                         break;
 780                 default:
 781                         /* Decouple CSP from IRQ and DMAREQ lines */
 782                         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
 783                                 spin_lock_irqsave(&p->chip->reg_lock, flags);
 784                                 set_mode_register(p->chip, 0xfc);
 785                                 set_mode_register(p->chip, 0x00);
 786                                 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 787                                 p->running = 0;                 /* clear autoloaded flag */
 788                         }
 789                         return -EINVAL;
 790                 }
 791                 if (err) {
 792                         p->acc_format = 0;
 793                         p->acc_channels = p->acc_width = p->acc_rates = 0;
 794
 795                         p->running = 0;                         /* clear autoloaded flag */
 796                         p->mode = 0;
 797                         return (err);
 798                 } else {
 799                         p->running = SNDRV_SB_CSP_ST_AUTO;      /* set autoloaded flag */
 800                         p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT;       /* only 16 bit data */
 801                         p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
 802                         p->acc_rates = SNDRV_SB_CSP_RATE_ALL;   /* HW codecs accept all rates */
 803                 }
 804
 805         }
 806         return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
 807 }
 808
 809 /*
 810  * start CSP
 811  */
 812 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
 813 {
 814         unsigned char s_type;   /* sample type */
 815         unsigned char mixL, mixR;
 816         int result = -EIO;
 817         unsigned long flags;
 818
 819         if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
 820                 snd_printd("%s: Microcode not loaded\n", __FUNCTION__);
 821                 return -ENXIO;
 822         }
 823         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
 824                 snd_printd("%s: CSP already running\n", __FUNCTION__);
 825                 return -EBUSY;
 826         }
 827         if (!(sample_width & p->acc_width)) {
 828                 snd_printd("%s: Unsupported PCM sample width\n", __FUNCTION__);
 829                 return -EINVAL;
 830         }
 831         if (!(channels & p->acc_channels)) {
 832                 snd_printd("%s: Invalid number of channels\n", __FUNCTION__);
 833                 return -EINVAL;
 834         }
 835
 836         /* Mute PCM volume */
 837         spin_lock_irqsave(&p->chip->mixer_lock, flags);
 838         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
 839         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
 840         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
 841         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
 842
 843         spin_lock(&p->chip->reg_lock);
 844         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
 845         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
 846
 847         s_type = 0x00;
 848         if (channels == SNDRV_SB_CSP_MONO)
 849                 s_type = 0x11;  /* 000n 000n    (n = 1 if mono) */
 850         if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
 851                 s_type |= 0x22; /* 00dX 00dX    (d = 1 if 8 bit samples) */
 852
 853         if (set_codec_parameter(p->chip, 0x81, s_type)) {
 854                 snd_printd("%s: Set sample type command failed\n", __FUNCTION__);
 855                 goto __fail;
 856         }
 857         if (set_codec_parameter(p->chip, 0x80, 0x00)) {
 858                 snd_printd("%s: Codec start command failed\n", __FUNCTION__);
 859                 goto __fail;
 860         }
 861         p->run_width = sample_width;
 862         p->run_channels = channels;
 863
 864         p->running |= SNDRV_SB_CSP_ST_RUNNING;
 865
 866         if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
 867                 set_codec_parameter(p->chip, 0xe0, 0x01);
 868                 /* enable QSound decoder */
 869                 set_codec_parameter(p->chip, 0x00, 0xff);
 870                 set_codec_parameter(p->chip, 0x01, 0xff);
 871                 p->running |= SNDRV_SB_CSP_ST_QSOUND;
 872                 /* set QSound startup value */
 873                 snd_sb_csp_qsound_transfer(p);
 874         }
 875         result = 0;
 876
 877       __fail:
 878         spin_unlock(&p->chip->reg_lock);
 879
 880         /* restore PCM volume */
 881         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
 882         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
 883         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
 884
 885         return result;
 886 }
 887
 888 /*
 889  * stop CSP
 890  */
 891 static int snd_sb_csp_stop(struct snd_sb_csp * p)
 892 {
 893         int result;
 894         unsigned char mixL, mixR;
 895         unsigned long flags;
 896
 897         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
 898                 return 0;
 899
 900         /* Mute PCM volume */
 901         spin_lock_irqsave(&p->chip->mixer_lock, flags);
 902         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
 903         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
 904         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
 905         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
 906
 907         spin_lock(&p->chip->reg_lock);
 908         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
 909                 set_codec_parameter(p->chip, 0xe0, 0x01);
 910                 /* disable QSound decoder */
 911                 set_codec_parameter(p->chip, 0x00, 0x00);
 912                 set_codec_parameter(p->chip, 0x01, 0x00);
 913
 914                 p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
 915         }
 916         result = set_mode_register(p->chip, 0xc0);      /* c0 = STOP */
 917         spin_unlock(&p->chip->reg_lock);
 918
 919         /* restore PCM volume */
 920         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
 921         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
 922         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
 923
 924         if (!(result))
 925                 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
 926         return result;
 927 }
 928
 929 /*
 930  * pause CSP codec and hold DMA transfer
 931  */
 932 static int snd_sb_csp_pause(struct snd_sb_csp * p)
 933 {
 934         int result;
 935         unsigned long flags;
 936
 937         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
 938                 return -EBUSY;
 939
 940         spin_lock_irqsave(&p->chip->reg_lock, flags);
 941         result = set_codec_parameter(p->chip, 0x80, 0xff);
 942         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 943         if (!(result))
 944                 p->running |= SNDRV_SB_CSP_ST_PAUSED;
 945
 946         return result;
 947 }
 948
 949 /*
 950  * restart CSP codec and resume DMA transfer
 951  */
 952 static int snd_sb_csp_restart(struct snd_sb_csp * p)
 953 {
 954         int result;
 955         unsigned long flags;
 956
 957         if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
 958                 return -EBUSY;
 959
 960         spin_lock_irqsave(&p->chip->reg_lock, flags);
 961         result = set_codec_parameter(p->chip, 0x80, 0x00);
 962         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 963         if (!(result))
 964                 p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
 965
 966         return result;
 967 }
 968
 969 /* ------------------------------ */
 970
 971 /*
 972  * QSound mixer control for PCM
 973  */
 974
 975 static int snd_sb_qsound_switch_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 976 {
 977         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 978         uinfo->count = 1;
 979         uinfo->value.integer.min = 0;
 980         uinfo->value.integer.max = 1;
 981         return 0;
 982 }
 983
 984 static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 985 {
 986         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
 987
 988         ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
 989         return 0;
 990 }
 991
 992 static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 993 {
 994         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
 995         unsigned long flags;
 996         int change;
 997         unsigned char nval;
 998
 999         nval = ucontrol->value.integer.value[0] & 0x01;
1000         spin_lock_irqsave(&p->q_lock, flags);
1001         change = p->q_enabled != nval;
1002         p->q_enabled = nval;
1003         spin_unlock_irqrestore(&p->q_lock, flags);
1004         return change;
1005 }
1006
1007 static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1008 {
1009         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1010         uinfo->count = 2;
1011         uinfo->value.integer.min = 0;
1012         uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1013         return 0;
1014 }
1015
1016 static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1017 {
1018         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1019         unsigned long flags;
1020
1021         spin_lock_irqsave(&p->q_lock, flags);
1022         ucontrol->value.integer.value[0] = p->qpos_left;
1023         ucontrol->value.integer.value[1] = p->qpos_right;
1024         spin_unlock_irqrestore(&p->q_lock, flags);
1025         return 0;
1026 }
1027
1028 static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1029 {
1030         struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1031         unsigned long flags;
1032         int change;
1033         unsigned char nval1, nval2;
1034
1035         nval1 = ucontrol->value.integer.value[0];
1036         if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1037                 nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1038         nval2 = ucontrol->value.integer.value[1];
1039         if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1040                 nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1041         spin_lock_irqsave(&p->q_lock, flags);
1042         change = p->qpos_left != nval1 || p->qpos_right != nval2;
1043         p->qpos_left = nval1;
1044         p->qpos_right = nval2;
1045         p->qpos_changed = change;
1046         spin_unlock_irqrestore(&p->q_lock, flags);
1047         return change;
1048 }
1049
1050 static struct snd_kcontrol_new snd_sb_qsound_switch = {
1051         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1052         .name = "3D Control - Switch",
1053         .info = snd_sb_qsound_switch_info,
1054         .get = snd_sb_qsound_switch_get,
1055         .put = snd_sb_qsound_switch_put
1056 };
1057
1058 static struct snd_kcontrol_new snd_sb_qsound_space = {
1059         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1060         .name = "3D Control - Space",
1061         .info = snd_sb_qsound_space_info,
1062         .get = snd_sb_qsound_space_get,
1063         .put = snd_sb_qsound_space_put
1064 };
1065
1066 static int snd_sb_qsound_build(struct snd_sb_csp * p)
1067 {
1068         struct snd_card *card;
1069         int err;
1070
1071         snd_assert(p != NULL, return -EINVAL);
1072
1073         card = p->chip->card;
1074         p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1075         p->qpos_changed = 0;
1076
1077         spin_lock_init(&p->q_lock);
1078
1079         if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
1080                 goto __error;
1081         if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
1082                 goto __error;
1083
1084         return 0;
1085
1086      __error:
1087         snd_sb_qsound_destroy(p);
1088         return err;
1089 }
1090
1091 static void snd_sb_qsound_destroy(struct snd_sb_csp * p)
1092 {
1093         struct snd_card *card;
1094         unsigned long flags;
1095
1096         snd_assert(p != NULL, return);
1097
1098         card = p->chip->card;
1099
1100         down_write(&card->controls_rwsem);
1101         if (p->qsound_switch)
1102                 snd_ctl_remove(card, p->qsound_switch);
1103         if (p->qsound_space)
1104                 snd_ctl_remove(card, p->qsound_space);
1105         up_write(&card->controls_rwsem);
1106
1107         /* cancel pending transfer of QSound parameters */
1108         spin_lock_irqsave (&p->q_lock, flags);
1109         p->qpos_changed = 0;
1110         spin_unlock_irqrestore (&p->q_lock, flags);
1111 }
1112
1113 /*
1114  * Transfer qsound parameters to CSP,
1115  * function should be called from interrupt routine
1116  */
1117 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p)
1118 {
1119         int err = -ENXIO;
1120
1121         spin_lock(&p->q_lock);
1122         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1123                 set_codec_parameter(p->chip, 0xe0, 0x01);
1124                 /* left channel */
1125                 set_codec_parameter(p->chip, 0x00, p->qpos_left);
1126                 set_codec_parameter(p->chip, 0x02, 0x00);
1127                 /* right channel */
1128                 set_codec_parameter(p->chip, 0x00, p->qpos_right);
1129                 set_codec_parameter(p->chip, 0x03, 0x00);
1130                 err = 0;
1131         }
1132         p->qpos_changed = 0;
1133         spin_unlock(&p->q_lock);
1134         return err;
1135 }
1136
1137 /* ------------------------------ */
1138
1139 /*
1140  * proc interface
1141  */
1142 static int init_proc_entry(struct snd_sb_csp * p, int device)
1143 {
1144         char name[16];
1145         struct snd_info_entry *entry;
1146         sprintf(name, "cspD%d", device);
1147         if (! snd_card_proc_new(p->chip->card, name, &entry))
1148                 snd_info_set_text_ops(entry, p, info_read);
1149         return 0;
1150 }
1151
1152 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1153 {
1154         struct snd_sb_csp *p = entry->private_data;
1155
1156         snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1157         snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1158                     ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1159                     ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1160                     ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1161         if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1162                 snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1163                 snd_iprintf(buffer, "Sample rates: ");
1164                 if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1165                         snd_iprintf(buffer, "All\n");
1166                 } else {
1167                         snd_iprintf(buffer, "%s%s%s%s\n",
1168                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1169                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1170                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1171                                     ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1172                 }
1173                 if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1174                         snd_iprintf(buffer, "QSound decoder %sabled\n",
1175                                     p->q_enabled ? "en" : "dis");
1176                 } else {
1177                         snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1178                                     p->acc_format,
1179                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1180                                     ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1181                                     ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1182                                     ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1183                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1184                                     ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1185                 }
1186         }
1187         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1188                 snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1189         }
1190         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1191                 snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1192                             ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1193                             ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1194         }
1195         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1196                 snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1197                             p->qpos_left, p->qpos_right);
1198         }
1199 }
1200
1201 /* */
1202
1203 EXPORT_SYMBOL(snd_sb_csp_new);
1204
1205 /*
1206  * INIT part
1207  */
1208
1209 static int __init alsa_sb_csp_init(void)
1210 {
1211         return 0;
1212 }
1213
1214 static void __exit alsa_sb_csp_exit(void)
1215 {
1216 }
1217
1218 module_init(alsa_sb_csp_init)
1219 module_exit(alsa_sb_csp_exit)