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 <linux/delay.h>
  27 #include <linux/init.h>
  28 #include <linux/slab.h>
  29 #include <sound/core.h>
  30 #include <sound/control.h>
  31 #include <sound/info.h>
  32 #include <sound/sb16_csp.h>
  33 #include <sound/initval.h>
  34
  35 MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
  36 MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor");
  37 MODULE_LICENSE("GPL");
  38 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
  39 MODULE_FIRMWARE("sb16/mulaw_main.csp");
  40 MODULE_FIRMWARE("sb16/alaw_main.csp");
  41 MODULE_FIRMWARE("sb16/ima_adpcm_init.csp");
  42 MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp");
  43 MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp");
  44 #endif
  45
  46 #ifdef SNDRV_LITTLE_ENDIAN
  47 #define CSP_HDR_VALUE(a,b,c,d)  ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
  48 #else
  49 #define CSP_HDR_VALUE(a,b,c,d)  ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
  50 #endif
  51
  52 #define RIFF_HEADER     CSP_HDR_VALUE('R', 'I', 'F', 'F')
  53 #define CSP__HEADER     CSP_HDR_VALUE('C', 'S', 'P', ' ')
  54 #define LIST_HEADER     CSP_HDR_VALUE('L', 'I', 'S', 'T')
  55 #define FUNC_HEADER     CSP_HDR_VALUE('f', 'u', 'n', 'c')
  56 #define CODE_HEADER     CSP_HDR_VALUE('c', 'o', 'd', 'e')
  57 #define INIT_HEADER     CSP_HDR_VALUE('i', 'n', 'i', 't')
  58 #define MAIN_HEADER     CSP_HDR_VALUE('m', 'a', 'i', 'n')
  59
  60 /*
  61  * RIFF data format
  62  */
  63 struct riff_header {
  64         __u32 name;
  65         __u32 len;
  66 };
  67
  68 struct desc_header {
  69         struct riff_header info;
  70         __u16 func_nr;
  71         __u16 VOC_type;
  72         __u16 flags_play_rec;
  73         __u16 flags_16bit_8bit;
  74         __u16 flags_stereo_mono;
  75         __u16 flags_rates;
  76 };
  77
  78 /*
  79  * prototypes
  80  */
  81 static void snd_sb_csp_free(struct snd_hwdep *hw);
  82 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
  83 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
  84 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
  85
  86 static int csp_detect(struct snd_sb *chip, int *version);
  87 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
  88 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
  89 static int read_register(struct snd_sb *chip, unsigned char reg);
  90 static int set_mode_register(struct snd_sb *chip, unsigned char mode);
  91 static int get_version(struct snd_sb *chip);
  92
  93 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
  94                                 struct snd_sb_csp_microcode __user * code);
  95 static int snd_sb_csp_unload(struct snd_sb_csp * p);
  96 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
  97 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
  98 static int snd_sb_csp_check_version(struct snd_sb_csp * p);
  99
 100 static int snd_sb_csp_use(struct snd_sb_csp * p);
 101 static int snd_sb_csp_unuse(struct snd_sb_csp * p);
 102 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
 103 static int snd_sb_csp_stop(struct snd_sb_csp * p);
 104 static int snd_sb_csp_pause(struct snd_sb_csp * p);
 105 static int snd_sb_csp_restart(struct snd_sb_csp * p);
 106
 107 static int snd_sb_qsound_build(struct snd_sb_csp * p);
 108 static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
 109 static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
 110
 111 static int init_proc_entry(struct snd_sb_csp * p, int device);
 112 static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
 113
 114 /*
 115  * Detect CSP chip and create a new instance
 116  */
 117 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
 118 {
 119         struct snd_sb_csp *p;
 120         int uninitialized_var(version);
 121         int err;
 122         struct snd_hwdep *hw;
 123
 124         if (rhwdep)
 125                 *rhwdep = NULL;
 126
 127         if (csp_detect(chip, &version))
 128                 return -ENODEV;
 129
 130         if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
 131                 return err;
 132
 133         if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
 134                 snd_device_free(chip->card, hw);
 135                 return -ENOMEM;
 136         }
 137         p->chip = chip;
 138         p->version = version;
 139
 140         /* CSP operators */
 141         p->ops.csp_use = snd_sb_csp_use;
 142         p->ops.csp_unuse = snd_sb_csp_unuse;
 143         p->ops.csp_autoload = snd_sb_csp_autoload;
 144         p->ops.csp_start = snd_sb_csp_start;
 145         p->ops.csp_stop = snd_sb_csp_stop;
 146         p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
 147
 148         mutex_init(&p->access_mutex);
 149         sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
 150         hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
 151         hw->private_data = p;
 152         hw->private_free = snd_sb_csp_free;
 153
 154         /* operators - only write/ioctl */
 155         hw->ops.open = snd_sb_csp_open;
 156         hw->ops.ioctl = snd_sb_csp_ioctl;
 157         hw->ops.release = snd_sb_csp_release;
 158
 159         /* create a proc entry */
 160         init_proc_entry(p, device);
 161         if (rhwdep)
 162                 *rhwdep = hw;
 163         return 0;
 164 }
 165
 166 /*
 167  * free_private for hwdep instance
 168  */
 169 static void snd_sb_csp_free(struct snd_hwdep *hwdep)
 170 {
 171 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
 172         int i;
 173 #endif
 174         struct snd_sb_csp *p = hwdep->private_data;
 175         if (p) {
 176                 if (p->running & SNDRV_SB_CSP_ST_RUNNING)
 177                         snd_sb_csp_stop(p);
 178 #ifndef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
 179                 for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
 180                         release_firmware(p->csp_programs[i]);
 181 #endif
 182                 kfree(p);
 183         }
 184 }
 185
 186 /* ------------------------------ */
 187
 188 /*
 189  * open the device exclusively
 190  */
 191 static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
 192 {
 193         struct snd_sb_csp *p = hw->private_data;
 194         return (snd_sb_csp_use(p));
 195 }
 196
 197 /*
 198  * ioctl for hwdep device:
 199  */
 200 static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
 201 {
 202         struct snd_sb_csp *p = hw->private_data;
 203         struct snd_sb_csp_info info;
 204         struct snd_sb_csp_start start_info;
 205         int err;
 206
 207         snd_assert(p != NULL, return -EINVAL);
 208
 209         if (snd_sb_csp_check_version(p))
 210                 return -ENODEV;
 211
 212         switch (cmd) {
 213                 /* get information */
 214         case SNDRV_SB_CSP_IOCTL_INFO:
 215                 *info.codec_name = *p->codec_name;
 216                 info.func_nr = p->func_nr;
 217                 info.acc_format = p->acc_format;
 218                 info.acc_channels = p->acc_channels;
 219                 info.acc_width = p->acc_width;
 220                 info.acc_rates = p->acc_rates;
 221                 info.csp_mode = p->mode;
 222                 info.run_channels = p->run_channels;
 223                 info.run_width = p->run_width;
 224                 info.version = p->version;
 225                 info.state = p->running;
 226                 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
 227                         err = -EFAULT;
 228                 else
 229                         err = 0;
 230                 break;
 231
 232                 /* load CSP microcode */
 233         case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
 234                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
 235                        -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
 236                 break;
 237         case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
 238                 err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
 239                        -EBUSY : snd_sb_csp_unload(p));
 240                 break;
 241
 242                 /* change CSP running state */
 243         case SNDRV_SB_CSP_IOCTL_START:
 244                 if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
 245                         err = -EFAULT;
 246                 else
 247                         err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
 248                 break;
 249         case SNDRV_SB_CSP_IOCTL_STOP:
 250                 err = snd_sb_csp_stop(p);
 251                 break;
 252         case SNDRV_SB_CSP_IOCTL_PAUSE:
 253                 err = snd_sb_csp_pause(p);
 254                 break;
 255         case SNDRV_SB_CSP_IOCTL_RESTART:
 256                 err = snd_sb_csp_restart(p);
 257                 break;
 258         default:
 259                 err = -ENOTTY;
 260                 break;
 261         }
 262
 263         return err;
 264 }
 265
 266 /*
 267  * close the device
 268  */
 269 static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
 270 {
 271         struct snd_sb_csp *p = hw->private_data;
 272         return (snd_sb_csp_unuse(p));
 273 }
 274
 275 /* ------------------------------ */
 276
 277 /*
 278  * acquire device
 279  */
 280 static int snd_sb_csp_use(struct snd_sb_csp * p)
 281 {
 282         mutex_lock(&p->access_mutex);
 283         if (p->used) {
 284                 mutex_unlock(&p->access_mutex);
 285                 return -EAGAIN;
 286         }
 287         p->used++;
 288         mutex_unlock(&p->access_mutex);
 289
 290         return 0;
 291
 292 }
 293
 294 /*
 295  * release device
 296  */
 297 static int snd_sb_csp_unuse(struct snd_sb_csp * p)
 298 {
 299         mutex_lock(&p->access_mutex);
 300         p->used--;
 301         mutex_unlock(&p->access_mutex);
 302
 303         return 0;
 304 }
 305
 306 /*
 307  * load microcode via ioctl:
 308  * code is user-space pointer
 309  */
 310 static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
 311                                 struct snd_sb_csp_microcode __user * mcode)
 312 {
 313         struct snd_sb_csp_mc_header info;
 314
 315         unsigned char __user *data_ptr;
 316         unsigned char __user *data_end;
 317         unsigned short func_nr = 0;
 318
 319         struct riff_header file_h, item_h, code_h;
 320         __u32 item_type;
 321         struct desc_header funcdesc_h;
 322
 323         unsigned long flags;
 324         int err;
 325
 326         if (copy_from_user(&info, mcode, sizeof(info)))
 327                 return -EFAULT;
 328         data_ptr = mcode->data;
 329
 330         if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
 331                 return -EFAULT;
 332         if ((file_h.name != RIFF_HEADER) ||
 333             (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
 334                 snd_printd("%s: Invalid RIFF header\n", __func__);
 335                 return -EINVAL;
 336         }
 337         data_ptr += sizeof(file_h);
 338         data_end = data_ptr + le32_to_cpu(file_h.len);
 339
 340         if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
 341                 return -EFAULT;
 342         if (item_type != CSP__HEADER) {
 343                 snd_printd("%s: Invalid RIFF file type\n", __func__);
 344                 return -EINVAL;
 345         }
 346         data_ptr += sizeof (item_type);
 347
 348         for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
 349                 if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
 350                         return -EFAULT;
 351                 data_ptr += sizeof(item_h);
 352                 if (item_h.name != LIST_HEADER)
 353                         continue;
 354
 355                 if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
 356                          return -EFAULT;
 357                 switch (item_type) {
 358                 case FUNC_HEADER:
 359                         if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
 360                                 return -EFAULT;
 361                         func_nr = le16_to_cpu(funcdesc_h.func_nr);
 362                         break;
 363                 case CODE_HEADER:
 364                         if (func_nr != info.func_req)
 365                                 break;  /* not required function, try next */
 366                         data_ptr += sizeof(item_type);
 367
 368                         /* destroy QSound mixer element */
 369                         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
 370                                 snd_sb_qsound_destroy(p);
 371                         }
 372                         /* Clear all flags */
 373                         p->running = 0;
 374                         p->mode = 0;
 375
 376                         /* load microcode blocks */
 377                         for (;;) {
 378                                 if (data_ptr >= data_end)
 379                                         return -EINVAL;
 380                                 if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
 381                                         return -EFAULT;
 382
 383                                 /* init microcode blocks */
 384                                 if (code_h.name != INIT_HEADER)
 385                                         break;
 386                                 data_ptr += sizeof(code_h);
 387                                 err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
 388                                                       SNDRV_SB_CSP_LOAD_INITBLOCK);
 389                                 if (err)
 390                                         return err;
 391                                 data_ptr += le32_to_cpu(code_h.len);
 392                         }
 393                         /* main microcode block */
 394                         if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
 395                                 return -EFAULT;
 396
 397                         if (code_h.name != MAIN_HEADER) {
 398                                 snd_printd("%s: Missing 'main' microcode\n", __func__);
 399                                 return -EINVAL;
 400                         }
 401                         data_ptr += sizeof(code_h);
 402                         err = snd_sb_csp_load_user(p, data_ptr,
 403                                                    le32_to_cpu(code_h.len), 0);
 404                         if (err)
 405                                 return err;
 406
 407                         /* fill in codec header */
 408                         strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
 409                         p->func_nr = func_nr;
 410                         p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
 411                         switch (le16_to_cpu(funcdesc_h.VOC_type)) {
 412                         case 0x0001:    /* QSound decoder */
 413                                 if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
 414                                         if (snd_sb_qsound_build(p) == 0)
 415                                                 /* set QSound flag and clear all other mode flags */
 416                                                 p->mode = SNDRV_SB_CSP_MODE_QSOUND;
 417                                 }
 418                                 p->acc_format = 0;
 419                                 break;
 420                         case 0x0006:    /* A Law codec */
 421                                 p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
 422                                 break;
 423                         case 0x0007:    /* Mu Law codec */
 424                                 p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
 425                                 break;
 426                         case 0x0011:    /* what Creative thinks is IMA ADPCM codec */
 427                         case 0x0200:    /* Creative ADPCM codec */
 428                                 p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
 429                                 break;
 430                         case    201:    /* Text 2 Speech decoder */
 431                                 /* TODO: Text2Speech handling routines */
 432                                 p->acc_format = 0;
 433                                 break;
 434                         case 0x0202:    /* Fast Speech 8 codec */
 435                         case 0x0203:    /* Fast Speech 10 codec */
 436                                 p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
 437                                 break;
 438                         default:        /* other codecs are unsupported */
 439                                 p->acc_format = p->acc_width = p->acc_rates = 0;
 440                                 p->mode = 0;
 441                                 snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
 442                                            __func__,
 443                                            le16_to_cpu(funcdesc_h.VOC_type));
 444                                 return -EINVAL;
 445                         }
 446                         p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
 447                         p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
 448                         p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
 449
 450                         /* Decouple CSP from IRQ and DMAREQ lines */
 451                         spin_lock_irqsave(&p->chip->reg_lock, flags);
 452                         set_mode_register(p->chip, 0xfc);
 453                         set_mode_register(p->chip, 0x00);
 454                         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 455
 456                         /* finished loading successfully */
 457                         p->running = SNDRV_SB_CSP_ST_LOADED;    /* set LOADED flag */
 458                         return 0;
 459                 }
 460         }
 461         snd_printd("%s: Function #%d not found\n", __func__, info.func_req);
 462         return -EINVAL;
 463 }
 464
 465 /*
 466  * unload CSP microcode
 467  */
 468 static int snd_sb_csp_unload(struct snd_sb_csp * p)
 469 {
 470         if (p->running & SNDRV_SB_CSP_ST_RUNNING)
 471                 return -EBUSY;
 472         if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
 473                 return -ENXIO;
 474
 475         /* clear supported formats */
 476         p->acc_format = 0;
 477         p->acc_channels = p->acc_width = p->acc_rates = 0;
 478         /* destroy QSound mixer element */
 479         if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
 480                 snd_sb_qsound_destroy(p);
 481         }
 482         /* clear all flags */
 483         p->running = 0;
 484         p->mode = 0;
 485         return 0;
 486 }
 487
 488 /*
 489  * send command sequence to DSP
 490  */
 491 static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
 492 {
 493         int i;
 494         for (i = 0; i < size; i++) {
 495                 if (!snd_sbdsp_command(chip, seq[i]))
 496                         return -EIO;
 497         }
 498         return 0;
 499 }
 500
 501 /*
 502  * set CSP codec parameter
 503  */
 504 static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
 505 {
 506         unsigned char dsp_cmd[3];
 507
 508         dsp_cmd[0] = 0x05;      /* CSP set codec parameter */
 509         dsp_cmd[1] = val;       /* Parameter value */
 510         dsp_cmd[2] = par;       /* Parameter */
 511         command_seq(chip, dsp_cmd, 3);
 512         snd_sbdsp_command(chip, 0x03);  /* DSP read? */
 513         if (snd_sbdsp_get_byte(chip) != par)
 514                 return -EIO;
 515         return 0;
 516 }
 517
 518 /*
 519  * set CSP register
 520  */
 521 static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
 522 {
 523         unsigned char dsp_cmd[3];
 524
 525         dsp_cmd[0] = 0x0e;      /* CSP set register */
 526         dsp_cmd[1] = reg;       /* CSP Register */
 527         dsp_cmd[2] = val;       /* value */
 528         return command_seq(chip, dsp_cmd, 3);
 529 }
 530
 531 /*
 532  * read CSP register
 533  * return < 0 -> error
 534  */
 535 static int read_register(struct snd_sb *chip, unsigned char reg)
 536 {
 537         unsigned char dsp_cmd[2];
 538
 539         dsp_cmd[0] = 0x0f;      /* CSP read register */
 540         dsp_cmd[1] = reg;       /* CSP Register */
 541         command_seq(chip, dsp_cmd, 2);
 542         return snd_sbdsp_get_byte(chip);        /* Read DSP value */
 543 }
 544
 545 /*
 546  * set CSP mode register
 547  */
 548 static int set_mode_register(struct snd_sb *chip, unsigned char mode)
 549 {
 550         unsigned char dsp_cmd[2];
 551
 552         dsp_cmd[0] = 0x04;      /* CSP set mode register */
 553         dsp_cmd[1] = mode;      /* mode */
 554         return command_seq(chip, dsp_cmd, 2);
 555 }
 556
 557 /*
 558  * Detect CSP
 559  * return 0 if CSP exists.
 560  */
 561 static int csp_detect(struct snd_sb *chip, int *version)
 562 {
 563         unsigned char csp_test1, csp_test2;
 564         unsigned long flags;
 565         int result = -ENODEV;
 566
 567         spin_lock_irqsave(&chip->reg_lock, flags);
 568
 569         set_codec_parameter(chip, 0x00, 0x00);
 570         set_mode_register(chip, 0xfc);          /* 0xfc = ?? */
 571
 572         csp_test1 = read_register(chip, 0x83);
 573         set_register(chip, 0x83, ~csp_test1);
 574         csp_test2 = read_register(chip, 0x83);
 575         if (csp_test2 != (csp_test1 ^ 0xff))
 576                 goto __fail;
 577
 578         set_register(chip, 0x83, csp_test1);
 579         csp_test2 = read_register(chip, 0x83);
 580         if (csp_test2 != csp_test1)
 581                 goto __fail;
 582
 583         set_mode_register(chip, 0x00);          /* 0x00 = ? */
 584
 585         *version = get_version(chip);
 586         snd_sbdsp_reset(chip);  /* reset DSP after getversion! */
 587         if (*version >= 0x10 && *version <= 0x1f)
 588                 result = 0;             /* valid version id */
 589
 590       __fail:
 591         spin_unlock_irqrestore(&chip->reg_lock, flags);
 592         return result;
 593 }
 594
 595 /*
 596  * get CSP version number
 597  */
 598 static int get_version(struct snd_sb *chip)
 599 {
 600         unsigned char dsp_cmd[2];
 601
 602         dsp_cmd[0] = 0x08;      /* SB_DSP_!something! */
 603         dsp_cmd[1] = 0x03;      /* get chip version id? */
 604         command_seq(chip, dsp_cmd, 2);
 605
 606         return (snd_sbdsp_get_byte(chip));
 607 }
 608
 609 /*
 610  * check if the CSP version is valid
 611  */
 612 static int snd_sb_csp_check_version(struct snd_sb_csp * p)
 613 {
 614         if (p->version < 0x10 || p->version > 0x1f) {
 615                 snd_printd("%s: Invalid CSP version: 0x%x\n", __func__, p->version);
 616                 return 1;
 617         }
 618         return 0;
 619 }
 620
 621 /*
 622  * download microcode to CSP (microcode should have one "main" block).
 623  */
 624 static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
 625 {
 626         int status, i;
 627         int err;
 628         int result = -EIO;
 629         unsigned long flags;
 630
 631         spin_lock_irqsave(&p->chip->reg_lock, flags);
 632         snd_sbdsp_command(p->chip, 0x01);       /* CSP download command */
 633         if (snd_sbdsp_get_byte(p->chip)) {
 634                 snd_printd("%s: Download command failed\n", __func__);
 635                 goto __fail;
 636         }
 637         /* Send CSP low byte (size - 1) */
 638         snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
 639         /* Send high byte */
 640         snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
 641         /* send microcode sequence */
 642         /* load from kernel space */
 643         while (size--) {
 644                 if (!snd_sbdsp_command(p->chip, *buf++))
 645                         goto __fail;
 646         }
 647         if (snd_sbdsp_get_byte(p->chip))
 648                 goto __fail;
 649
 650         if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
 651                 i = 0;
 652                 /* some codecs (FastSpeech) take some time to initialize */
 653                 while (1) {
 654                         snd_sbdsp_command(p->chip, 0x03);
 655                         status = snd_sbdsp_get_byte(p->chip);
 656                         if (status == 0x55 || ++i >= 10)
 657                                 break;
 658                         udelay (10);
 659                 }
 660                 if (status != 0x55) {
 661                         snd_printd("%s: Microcode initialization failed\n", __func__);
 662                         goto __fail;
 663                 }
 664         } else {
 665                 /*
 666                  * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
 667                  * Start CSP chip if no 16bit DMA channel is set - some kind
 668                  * of autorun or perhaps a bugfix?
 669                  */
 670                 spin_lock(&p->chip->mixer_lock);
 671                 status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
 672                 spin_unlock(&p->chip->mixer_lock);
 673                 if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
 674                         err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
 675                                set_codec_parameter(p->chip, 0xff, 0x00));
 676                         snd_sbdsp_reset(p->chip);               /* really! */
 677                         if (err)
 678                                 goto __fail;
 679                         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
 680                         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
 681                 }
 682         }
 683         result = 0;
 684
 685       __fail:
 686         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 687         return result;
 688 }
 689
 690 static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
 691 {
 692         int err = -ENOMEM;
 693         unsigned char *kbuf = kmalloc(size, GFP_KERNEL);
 694         if (kbuf) {
 695                 if (copy_from_user(kbuf, buf, size))
 696                         err = -EFAULT;
 697                 else
 698                         err = snd_sb_csp_load(p, kbuf, size, load_flags);
 699                 kfree(kbuf);
 700         }
 701         return err;
 702 }
 703
 704 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
 705 #include "sb16_csp_codecs.h"
 706
 707 static const struct firmware snd_sb_csp_static_programs[] = {
 708         { .data = mulaw_main, .size = sizeof mulaw_main },
 709         { .data = alaw_main, .size = sizeof alaw_main },
 710         { .data = ima_adpcm_init, .size = sizeof ima_adpcm_init },
 711         { .data = ima_adpcm_playback, .size = sizeof ima_adpcm_playback },
 712         { .data = ima_adpcm_capture, .size = sizeof ima_adpcm_capture },
 713 };
 714 #endif
 715
 716 static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
 717 {
 718         static const char *const names[] = {
 719                 "sb16/mulaw_main.csp",
 720                 "sb16/alaw_main.csp",
 721                 "sb16/ima_adpcm_init.csp",
 722                 "sb16/ima_adpcm_playback.csp",
 723                 "sb16/ima_adpcm_capture.csp",
 724         };
 725         const struct firmware *program;
 726
 727         BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
 728         program = p->csp_programs[index];
 729         if (!program) {
 730 #ifdef CONFIG_SND_SB16_CSP_FIRMWARE_IN_KERNEL
 731                 program = &snd_sb_csp_static_programs[index];
 732 #else
 733                 int err = request_firmware(&program, names[index],
 734                                        p->chip->card->dev);
 735                 if (err < 0)
 736                         return err;
 737 #endif
 738                 p->csp_programs[index] = program;
 739         }
 740         return snd_sb_csp_load(p, program->data, program->size, flags);
 741 }
 742
 743 /*
 744  * autoload hardware codec if necessary
 745  * return 0 if CSP is loaded and ready to run (p->running != 0)
 746  */
 747 static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode)
 748 {
 749         unsigned long flags;
 750         int err = 0;
 751
 752         /* if CSP is running or manually loaded then exit */
 753         if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED))
 754                 return -EBUSY;
 755
 756         /* autoload microcode only if requested hardware codec is not already loaded */
 757         if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
 758                 p->running = SNDRV_SB_CSP_ST_AUTO;
 759         } else {
 760                 switch (pcm_sfmt) {
 761                 case SNDRV_PCM_FORMAT_MU_LAW:
 762                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
 763                         p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
 764                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
 765                         break;
 766                 case SNDRV_PCM_FORMAT_A_LAW:
 767                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
 768                         p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
 769                         p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
 770                         break;
 771                 case SNDRV_PCM_FORMAT_IMA_ADPCM:
 772                         err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
 773                                                        SNDRV_SB_CSP_LOAD_INITBLOCK);
 774                         if (err)
 775                                 break;
 776                         if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
 777                                 err = snd_sb_csp_firmware_load
 778                                         (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
 779                                 p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
 780                         } else {
 781                                 err = snd_sb_csp_firmware_load
 782                                         (p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
 783                                 p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
 784                         }
 785                         p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
 786                         break;
 787                 default:
 788                         /* Decouple CSP from IRQ and DMAREQ lines */
 789                         if (p->running & SNDRV_SB_CSP_ST_AUTO) {
 790                                 spin_lock_irqsave(&p->chip->reg_lock, flags);
 791                                 set_mode_register(p->chip, 0xfc);
 792                                 set_mode_register(p->chip, 0x00);
 793                                 spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 794                                 p->running = 0;                 /* clear autoloaded flag */
 795                         }
 796                         return -EINVAL;
 797                 }
 798                 if (err) {
 799                         p->acc_format = 0;
 800                         p->acc_channels = p->acc_width = p->acc_rates = 0;
 801
 802                         p->running = 0;                         /* clear autoloaded flag */
 803                         p->mode = 0;
 804                         return (err);
 805                 } else {
 806                         p->running = SNDRV_SB_CSP_ST_AUTO;      /* set autoloaded flag */
 807                         p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT;       /* only 16 bit data */
 808                         p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
 809                         p->acc_rates = SNDRV_SB_CSP_RATE_ALL;   /* HW codecs accept all rates */
 810                 }
 811
 812         }
 813         return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
 814 }
 815
 816 /*
 817  * start CSP
 818  */
 819 static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
 820 {
 821         unsigned char s_type;   /* sample type */
 822         unsigned char mixL, mixR;
 823         int result = -EIO;
 824         unsigned long flags;
 825
 826         if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
 827                 snd_printd("%s: Microcode not loaded\n", __func__);
 828                 return -ENXIO;
 829         }
 830         if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
 831                 snd_printd("%s: CSP already running\n", __func__);
 832                 return -EBUSY;
 833         }
 834         if (!(sample_width & p->acc_width)) {
 835                 snd_printd("%s: Unsupported PCM sample width\n", __func__);
 836                 return -EINVAL;
 837         }
 838         if (!(channels & p->acc_channels)) {
 839                 snd_printd("%s: Invalid number of channels\n", __func__);
 840                 return -EINVAL;
 841         }
 842
 843         /* Mute PCM volume */
 844         spin_lock_irqsave(&p->chip->mixer_lock, flags);
 845         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
 846         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
 847         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
 848         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
 849
 850         spin_lock(&p->chip->reg_lock);
 851         set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
 852         set_mode_register(p->chip, 0x70);       /* 70 = RUN */
 853
 854         s_type = 0x00;
 855         if (channels == SNDRV_SB_CSP_MONO)
 856                 s_type = 0x11;  /* 000n 000n    (n = 1 if mono) */
 857         if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
 858                 s_type |= 0x22; /* 00dX 00dX    (d = 1 if 8 bit samples) */
 859
 860         if (set_codec_parameter(p->chip, 0x81, s_type)) {
 861                 snd_printd("%s: Set sample type command failed\n", __func__);
 862                 goto __fail;
 863         }
 864         if (set_codec_parameter(p->chip, 0x80, 0x00)) {
 865                 snd_printd("%s: Codec start command failed\n", __func__);
 866                 goto __fail;
 867         }
 868         p->run_width = sample_width;
 869         p->run_channels = channels;
 870
 871         p->running |= SNDRV_SB_CSP_ST_RUNNING;
 872
 873         if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
 874                 set_codec_parameter(p->chip, 0xe0, 0x01);
 875                 /* enable QSound decoder */
 876                 set_codec_parameter(p->chip, 0x00, 0xff);
 877                 set_codec_parameter(p->chip, 0x01, 0xff);
 878                 p->running |= SNDRV_SB_CSP_ST_QSOUND;
 879                 /* set QSound startup value */
 880                 snd_sb_csp_qsound_transfer(p);
 881         }
 882         result = 0;
 883
 884       __fail:
 885         spin_unlock(&p->chip->reg_lock);
 886
 887         /* restore PCM volume */
 888         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
 889         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
 890         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
 891
 892         return result;
 893 }
 894
 895 /*
 896  * stop CSP
 897  */
 898 static int snd_sb_csp_stop(struct snd_sb_csp * p)
 899 {
 900         int result;
 901         unsigned char mixL, mixR;
 902         unsigned long flags;
 903
 904         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
 905                 return 0;
 906
 907         /* Mute PCM volume */
 908         spin_lock_irqsave(&p->chip->mixer_lock, flags);
 909         mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
 910         mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
 911         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
 912         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
 913
 914         spin_lock(&p->chip->reg_lock);
 915         if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
 916                 set_codec_parameter(p->chip, 0xe0, 0x01);
 917                 /* disable QSound decoder */
 918                 set_codec_parameter(p->chip, 0x00, 0x00);
 919                 set_codec_parameter(p->chip, 0x01, 0x00);
 920
 921                 p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
 922         }
 923         result = set_mode_register(p->chip, 0xc0);      /* c0 = STOP */
 924         spin_unlock(&p->chip->reg_lock);
 925
 926         /* restore PCM volume */
 927         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
 928         snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
 929         spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
 930
 931         if (!(result))
 932                 p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
 933         return result;
 934 }
 935
 936 /*
 937  * pause CSP codec and hold DMA transfer
 938  */
 939 static int snd_sb_csp_pause(struct snd_sb_csp * p)
 940 {
 941         int result;
 942         unsigned long flags;
 943
 944         if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
 945                 return -EBUSY;
 946
 947         spin_lock_irqsave(&p->chip->reg_lock, flags);
 948         result = set_codec_parameter(p->chip, 0x80, 0xff);
 949         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 950         if (!(result))
 951                 p->running |= SNDRV_SB_CSP_ST_PAUSED;
 952
 953         return result;
 954 }
 955
 956 /*
 957  * restart CSP codec and resume DMA transfer
 958  */
 959 static int snd_sb_csp_restart(struct snd_sb_csp * p)
 960 {
 961         int result;
 962         unsigned long flags;
 963
 964         if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
 965                 return -EBUSY;
 966
 967         spin_lock_irqsave(&p->chip->reg_lock, flags);
 968         result = set_codec_parameter(p->chip, 0x80, 0x00);
 969         spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 970         if (!(result))
 971                 p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
 972
 973         return result;
 974 }
 975
 976 /* ------------------------------ */
 977
 978 /*
 979  * QSound mixer control for PCM
 980  */
 981
 982 #define snd_sb_qsound_switch_info       snd_ctl_boolean_mono_info
 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)