linux/sound/isa/sb/sb16_csp.c
<<
>>
Prefs
   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 <linux/module.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
  36MODULE_AUTHOR("Uros Bizjak <uros@kss-loka.si>");
  37MODULE_DESCRIPTION("ALSA driver for SB16 Creative Signal Processor");
  38MODULE_LICENSE("GPL");
  39MODULE_FIRMWARE("sb16/mulaw_main.csp");
  40MODULE_FIRMWARE("sb16/alaw_main.csp");
  41MODULE_FIRMWARE("sb16/ima_adpcm_init.csp");
  42MODULE_FIRMWARE("sb16/ima_adpcm_playback.csp");
  43MODULE_FIRMWARE("sb16/ima_adpcm_capture.csp");
  44
  45#ifdef SNDRV_LITTLE_ENDIAN
  46#define CSP_HDR_VALUE(a,b,c,d)  ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24))
  47#else
  48#define CSP_HDR_VALUE(a,b,c,d)  ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24))
  49#endif
  50
  51#define RIFF_HEADER     CSP_HDR_VALUE('R', 'I', 'F', 'F')
  52#define CSP__HEADER     CSP_HDR_VALUE('C', 'S', 'P', ' ')
  53#define LIST_HEADER     CSP_HDR_VALUE('L', 'I', 'S', 'T')
  54#define FUNC_HEADER     CSP_HDR_VALUE('f', 'u', 'n', 'c')
  55#define CODE_HEADER     CSP_HDR_VALUE('c', 'o', 'd', 'e')
  56#define INIT_HEADER     CSP_HDR_VALUE('i', 'n', 'i', 't')
  57#define MAIN_HEADER     CSP_HDR_VALUE('m', 'a', 'i', 'n')
  58
  59/*
  60 * RIFF data format
  61 */
  62struct riff_header {
  63        __u32 name;
  64        __u32 len;
  65};
  66
  67struct desc_header {
  68        struct riff_header info;
  69        __u16 func_nr;
  70        __u16 VOC_type;
  71        __u16 flags_play_rec;
  72        __u16 flags_16bit_8bit;
  73        __u16 flags_stereo_mono;
  74        __u16 flags_rates;
  75};
  76
  77/*
  78 * prototypes
  79 */
  80static void snd_sb_csp_free(struct snd_hwdep *hw);
  81static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file);
  82static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg);
  83static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file);
  84
  85static int csp_detect(struct snd_sb *chip, int *version);
  86static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val);
  87static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val);
  88static int read_register(struct snd_sb *chip, unsigned char reg);
  89static int set_mode_register(struct snd_sb *chip, unsigned char mode);
  90static int get_version(struct snd_sb *chip);
  91
  92static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
  93                                struct snd_sb_csp_microcode __user * code);
  94static int snd_sb_csp_unload(struct snd_sb_csp * p);
  95static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags);
  96static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
  97static int snd_sb_csp_check_version(struct snd_sb_csp * p);
  98
  99static int snd_sb_csp_use(struct snd_sb_csp * p);
 100static int snd_sb_csp_unuse(struct snd_sb_csp * p);
 101static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels);
 102static int snd_sb_csp_stop(struct snd_sb_csp * p);
 103static int snd_sb_csp_pause(struct snd_sb_csp * p);
 104static int snd_sb_csp_restart(struct snd_sb_csp * p);
 105
 106static int snd_sb_qsound_build(struct snd_sb_csp * p);
 107static void snd_sb_qsound_destroy(struct snd_sb_csp * p);
 108static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p);
 109
 110static int init_proc_entry(struct snd_sb_csp * p, int device);
 111static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer);
 112
 113/*
 114 * Detect CSP chip and create a new instance
 115 */
 116int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
 117{
 118        struct snd_sb_csp *p;
 119        int uninitialized_var(version);
 120        int err;
 121        struct snd_hwdep *hw;
 122
 123        if (rhwdep)
 124                *rhwdep = NULL;
 125
 126        if (csp_detect(chip, &version))
 127                return -ENODEV;
 128
 129        if ((err = snd_hwdep_new(chip->card, "SB16-CSP", device, &hw)) < 0)
 130                return err;
 131
 132        if ((p = kzalloc(sizeof(*p), GFP_KERNEL)) == NULL) {
 133                snd_device_free(chip->card, hw);
 134                return -ENOMEM;
 135        }
 136        p->chip = chip;
 137        p->version = version;
 138
 139        /* CSP operators */
 140        p->ops.csp_use = snd_sb_csp_use;
 141        p->ops.csp_unuse = snd_sb_csp_unuse;
 142        p->ops.csp_autoload = snd_sb_csp_autoload;
 143        p->ops.csp_start = snd_sb_csp_start;
 144        p->ops.csp_stop = snd_sb_csp_stop;
 145        p->ops.csp_qsound_transfer = snd_sb_csp_qsound_transfer;
 146
 147        mutex_init(&p->access_mutex);
 148        sprintf(hw->name, "CSP v%d.%d", (version >> 4), (version & 0x0f));
 149        hw->iface = SNDRV_HWDEP_IFACE_SB16CSP;
 150        hw->private_data = p;
 151        hw->private_free = snd_sb_csp_free;
 152
 153        /* operators - only write/ioctl */
 154        hw->ops.open = snd_sb_csp_open;
 155        hw->ops.ioctl = snd_sb_csp_ioctl;
 156        hw->ops.release = snd_sb_csp_release;
 157
 158        /* create a proc entry */
 159        init_proc_entry(p, device);
 160        if (rhwdep)
 161                *rhwdep = hw;
 162        return 0;
 163}
 164
 165/*
 166 * free_private for hwdep instance
 167 */
 168static void snd_sb_csp_free(struct snd_hwdep *hwdep)
 169{
 170        int i;
 171        struct snd_sb_csp *p = hwdep->private_data;
 172        if (p) {
 173                if (p->running & SNDRV_SB_CSP_ST_RUNNING)
 174                        snd_sb_csp_stop(p);
 175                for (i = 0; i < ARRAY_SIZE(p->csp_programs); ++i)
 176                        release_firmware(p->csp_programs[i]);
 177                kfree(p);
 178        }
 179}
 180
 181/* ------------------------------ */
 182
 183/*
 184 * open the device exclusively
 185 */
 186static int snd_sb_csp_open(struct snd_hwdep * hw, struct file *file)
 187{
 188        struct snd_sb_csp *p = hw->private_data;
 189        return (snd_sb_csp_use(p));
 190}
 191
 192/*
 193 * ioctl for hwdep device:
 194 */
 195static int snd_sb_csp_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
 196{
 197        struct snd_sb_csp *p = hw->private_data;
 198        struct snd_sb_csp_info info;
 199        struct snd_sb_csp_start start_info;
 200        int err;
 201
 202        if (snd_BUG_ON(!p))
 203                return -EINVAL;
 204
 205        if (snd_sb_csp_check_version(p))
 206                return -ENODEV;
 207
 208        switch (cmd) {
 209                /* get information */
 210        case SNDRV_SB_CSP_IOCTL_INFO:
 211                memset(&info, 0, sizeof(info));
 212                *info.codec_name = *p->codec_name;
 213                info.func_nr = p->func_nr;
 214                info.acc_format = p->acc_format;
 215                info.acc_channels = p->acc_channels;
 216                info.acc_width = p->acc_width;
 217                info.acc_rates = p->acc_rates;
 218                info.csp_mode = p->mode;
 219                info.run_channels = p->run_channels;
 220                info.run_width = p->run_width;
 221                info.version = p->version;
 222                info.state = p->running;
 223                if (copy_to_user((void __user *)arg, &info, sizeof(info)))
 224                        err = -EFAULT;
 225                else
 226                        err = 0;
 227                break;
 228
 229                /* load CSP microcode */
 230        case SNDRV_SB_CSP_IOCTL_LOAD_CODE:
 231                err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
 232                       -EBUSY : snd_sb_csp_riff_load(p, (struct snd_sb_csp_microcode __user *) arg));
 233                break;
 234        case SNDRV_SB_CSP_IOCTL_UNLOAD_CODE:
 235                err = (p->running & SNDRV_SB_CSP_ST_RUNNING ?
 236                       -EBUSY : snd_sb_csp_unload(p));
 237                break;
 238
 239                /* change CSP running state */
 240        case SNDRV_SB_CSP_IOCTL_START:
 241                if (copy_from_user(&start_info, (void __user *) arg, sizeof(start_info)))
 242                        err = -EFAULT;
 243                else
 244                        err = snd_sb_csp_start(p, start_info.sample_width, start_info.channels);
 245                break;
 246        case SNDRV_SB_CSP_IOCTL_STOP:
 247                err = snd_sb_csp_stop(p);
 248                break;
 249        case SNDRV_SB_CSP_IOCTL_PAUSE:
 250                err = snd_sb_csp_pause(p);
 251                break;
 252        case SNDRV_SB_CSP_IOCTL_RESTART:
 253                err = snd_sb_csp_restart(p);
 254                break;
 255        default:
 256                err = -ENOTTY;
 257                break;
 258        }
 259
 260        return err;
 261}
 262
 263/*
 264 * close the device
 265 */
 266static int snd_sb_csp_release(struct snd_hwdep * hw, struct file *file)
 267{
 268        struct snd_sb_csp *p = hw->private_data;
 269        return (snd_sb_csp_unuse(p));
 270}
 271
 272/* ------------------------------ */
 273
 274/*
 275 * acquire device
 276 */
 277static int snd_sb_csp_use(struct snd_sb_csp * p)
 278{
 279        mutex_lock(&p->access_mutex);
 280        if (p->used) {
 281                mutex_unlock(&p->access_mutex);
 282                return -EAGAIN;
 283        }
 284        p->used++;
 285        mutex_unlock(&p->access_mutex);
 286
 287        return 0;
 288
 289}
 290
 291/*
 292 * release device
 293 */
 294static int snd_sb_csp_unuse(struct snd_sb_csp * p)
 295{
 296        mutex_lock(&p->access_mutex);
 297        p->used--;
 298        mutex_unlock(&p->access_mutex);
 299
 300        return 0;
 301}
 302
 303/*
 304 * load microcode via ioctl: 
 305 * code is user-space pointer
 306 */
 307static int snd_sb_csp_riff_load(struct snd_sb_csp * p,
 308                                struct snd_sb_csp_microcode __user * mcode)
 309{
 310        struct snd_sb_csp_mc_header info;
 311
 312        unsigned char __user *data_ptr;
 313        unsigned char __user *data_end;
 314        unsigned short func_nr = 0;
 315
 316        struct riff_header file_h, item_h, code_h;
 317        __u32 item_type;
 318        struct desc_header funcdesc_h;
 319
 320        unsigned long flags;
 321        int err;
 322
 323        if (copy_from_user(&info, mcode, sizeof(info)))
 324                return -EFAULT;
 325        data_ptr = mcode->data;
 326
 327        if (copy_from_user(&file_h, data_ptr, sizeof(file_h)))
 328                return -EFAULT;
 329        if ((file_h.name != RIFF_HEADER) ||
 330            (le32_to_cpu(file_h.len) >= SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE - sizeof(file_h))) {
 331                snd_printd("%s: Invalid RIFF header\n", __func__);
 332                return -EINVAL;
 333        }
 334        data_ptr += sizeof(file_h);
 335        data_end = data_ptr + le32_to_cpu(file_h.len);
 336
 337        if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
 338                return -EFAULT;
 339        if (item_type != CSP__HEADER) {
 340                snd_printd("%s: Invalid RIFF file type\n", __func__);
 341                return -EINVAL;
 342        }
 343        data_ptr += sizeof (item_type);
 344
 345        for (; data_ptr < data_end; data_ptr += le32_to_cpu(item_h.len)) {
 346                if (copy_from_user(&item_h, data_ptr, sizeof(item_h)))
 347                        return -EFAULT;
 348                data_ptr += sizeof(item_h);
 349                if (item_h.name != LIST_HEADER)
 350                        continue;
 351
 352                if (copy_from_user(&item_type, data_ptr, sizeof(item_type)))
 353                         return -EFAULT;
 354                switch (item_type) {
 355                case FUNC_HEADER:
 356                        if (copy_from_user(&funcdesc_h, data_ptr + sizeof(item_type), sizeof(funcdesc_h)))
 357                                return -EFAULT;
 358                        func_nr = le16_to_cpu(funcdesc_h.func_nr);
 359                        break;
 360                case CODE_HEADER:
 361                        if (func_nr != info.func_req)
 362                                break;  /* not required function, try next */
 363                        data_ptr += sizeof(item_type);
 364
 365                        /* destroy QSound mixer element */
 366                        if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
 367                                snd_sb_qsound_destroy(p);
 368                        }
 369                        /* Clear all flags */
 370                        p->running = 0;
 371                        p->mode = 0;
 372
 373                        /* load microcode blocks */
 374                        for (;;) {
 375                                if (data_ptr >= data_end)
 376                                        return -EINVAL;
 377                                if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
 378                                        return -EFAULT;
 379
 380                                /* init microcode blocks */
 381                                if (code_h.name != INIT_HEADER)
 382                                        break;
 383                                data_ptr += sizeof(code_h);
 384                                err = snd_sb_csp_load_user(p, data_ptr, le32_to_cpu(code_h.len),
 385                                                      SNDRV_SB_CSP_LOAD_INITBLOCK);
 386                                if (err)
 387                                        return err;
 388                                data_ptr += le32_to_cpu(code_h.len);
 389                        }
 390                        /* main microcode block */
 391                        if (copy_from_user(&code_h, data_ptr, sizeof(code_h)))
 392                                return -EFAULT;
 393
 394                        if (code_h.name != MAIN_HEADER) {
 395                                snd_printd("%s: Missing 'main' microcode\n", __func__);
 396                                return -EINVAL;
 397                        }
 398                        data_ptr += sizeof(code_h);
 399                        err = snd_sb_csp_load_user(p, data_ptr,
 400                                                   le32_to_cpu(code_h.len), 0);
 401                        if (err)
 402                                return err;
 403
 404                        /* fill in codec header */
 405                        strlcpy(p->codec_name, info.codec_name, sizeof(p->codec_name));
 406                        p->func_nr = func_nr;
 407                        p->mode = le16_to_cpu(funcdesc_h.flags_play_rec);
 408                        switch (le16_to_cpu(funcdesc_h.VOC_type)) {
 409                        case 0x0001:    /* QSound decoder */
 410                                if (le16_to_cpu(funcdesc_h.flags_play_rec) == SNDRV_SB_CSP_MODE_DSP_WRITE) {
 411                                        if (snd_sb_qsound_build(p) == 0)
 412                                                /* set QSound flag and clear all other mode flags */
 413                                                p->mode = SNDRV_SB_CSP_MODE_QSOUND;
 414                                }
 415                                p->acc_format = 0;
 416                                break;
 417                        case 0x0006:    /* A Law codec */
 418                                p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
 419                                break;
 420                        case 0x0007:    /* Mu Law codec */
 421                                p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
 422                                break;
 423                        case 0x0011:    /* what Creative thinks is IMA ADPCM codec */
 424                        case 0x0200:    /* Creative ADPCM codec */
 425                                p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
 426                                break;
 427                        case    201:    /* Text 2 Speech decoder */
 428                                /* TODO: Text2Speech handling routines */
 429                                p->acc_format = 0;
 430                                break;
 431                        case 0x0202:    /* Fast Speech 8 codec */
 432                        case 0x0203:    /* Fast Speech 10 codec */
 433                                p->acc_format = SNDRV_PCM_FMTBIT_SPECIAL;
 434                                break;
 435                        default:        /* other codecs are unsupported */
 436                                p->acc_format = p->acc_width = p->acc_rates = 0;
 437                                p->mode = 0;
 438                                snd_printd("%s: Unsupported CSP codec type: 0x%04x\n",
 439                                           __func__,
 440                                           le16_to_cpu(funcdesc_h.VOC_type));
 441                                return -EINVAL;
 442                        }
 443                        p->acc_channels = le16_to_cpu(funcdesc_h.flags_stereo_mono);
 444                        p->acc_width = le16_to_cpu(funcdesc_h.flags_16bit_8bit);
 445                        p->acc_rates = le16_to_cpu(funcdesc_h.flags_rates);
 446
 447                        /* Decouple CSP from IRQ and DMAREQ lines */
 448                        spin_lock_irqsave(&p->chip->reg_lock, flags);
 449                        set_mode_register(p->chip, 0xfc);
 450                        set_mode_register(p->chip, 0x00);
 451                        spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 452
 453                        /* finished loading successfully */
 454                        p->running = SNDRV_SB_CSP_ST_LOADED;    /* set LOADED flag */
 455                        return 0;
 456                }
 457        }
 458        snd_printd("%s: Function #%d not found\n", __func__, info.func_req);
 459        return -EINVAL;
 460}
 461
 462/*
 463 * unload CSP microcode
 464 */
 465static int snd_sb_csp_unload(struct snd_sb_csp * p)
 466{
 467        if (p->running & SNDRV_SB_CSP_ST_RUNNING)
 468                return -EBUSY;
 469        if (!(p->running & SNDRV_SB_CSP_ST_LOADED))
 470                return -ENXIO;
 471
 472        /* clear supported formats */
 473        p->acc_format = 0;
 474        p->acc_channels = p->acc_width = p->acc_rates = 0;
 475        /* destroy QSound mixer element */
 476        if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
 477                snd_sb_qsound_destroy(p);
 478        }
 479        /* clear all flags */
 480        p->running = 0;
 481        p->mode = 0;
 482        return 0;
 483}
 484
 485/*
 486 * send command sequence to DSP
 487 */
 488static inline int command_seq(struct snd_sb *chip, const unsigned char *seq, int size)
 489{
 490        int i;
 491        for (i = 0; i < size; i++) {
 492                if (!snd_sbdsp_command(chip, seq[i]))
 493                        return -EIO;
 494        }
 495        return 0;
 496}
 497
 498/*
 499 * set CSP codec parameter
 500 */
 501static int set_codec_parameter(struct snd_sb *chip, unsigned char par, unsigned char val)
 502{
 503        unsigned char dsp_cmd[3];
 504
 505        dsp_cmd[0] = 0x05;      /* CSP set codec parameter */
 506        dsp_cmd[1] = val;       /* Parameter value */
 507        dsp_cmd[2] = par;       /* Parameter */
 508        command_seq(chip, dsp_cmd, 3);
 509        snd_sbdsp_command(chip, 0x03);  /* DSP read? */
 510        if (snd_sbdsp_get_byte(chip) != par)
 511                return -EIO;
 512        return 0;
 513}
 514
 515/*
 516 * set CSP register
 517 */
 518static int set_register(struct snd_sb *chip, unsigned char reg, unsigned char val)
 519{
 520        unsigned char dsp_cmd[3];
 521
 522        dsp_cmd[0] = 0x0e;      /* CSP set register */
 523        dsp_cmd[1] = reg;       /* CSP Register */
 524        dsp_cmd[2] = val;       /* value */
 525        return command_seq(chip, dsp_cmd, 3);
 526}
 527
 528/*
 529 * read CSP register
 530 * return < 0 -> error
 531 */
 532static int read_register(struct snd_sb *chip, unsigned char reg)
 533{
 534        unsigned char dsp_cmd[2];
 535
 536        dsp_cmd[0] = 0x0f;      /* CSP read register */
 537        dsp_cmd[1] = reg;       /* CSP Register */
 538        command_seq(chip, dsp_cmd, 2);
 539        return snd_sbdsp_get_byte(chip);        /* Read DSP value */
 540}
 541
 542/*
 543 * set CSP mode register
 544 */
 545static int set_mode_register(struct snd_sb *chip, unsigned char mode)
 546{
 547        unsigned char dsp_cmd[2];
 548
 549        dsp_cmd[0] = 0x04;      /* CSP set mode register */
 550        dsp_cmd[1] = mode;      /* mode */
 551        return command_seq(chip, dsp_cmd, 2);
 552}
 553
 554/*
 555 * Detect CSP
 556 * return 0 if CSP exists.
 557 */
 558static int csp_detect(struct snd_sb *chip, int *version)
 559{
 560        unsigned char csp_test1, csp_test2;
 561        unsigned long flags;
 562        int result = -ENODEV;
 563
 564        spin_lock_irqsave(&chip->reg_lock, flags);
 565
 566        set_codec_parameter(chip, 0x00, 0x00);
 567        set_mode_register(chip, 0xfc);          /* 0xfc = ?? */
 568
 569        csp_test1 = read_register(chip, 0x83);
 570        set_register(chip, 0x83, ~csp_test1);
 571        csp_test2 = read_register(chip, 0x83);
 572        if (csp_test2 != (csp_test1 ^ 0xff))
 573                goto __fail;
 574
 575        set_register(chip, 0x83, csp_test1);
 576        csp_test2 = read_register(chip, 0x83);
 577        if (csp_test2 != csp_test1)
 578                goto __fail;
 579
 580        set_mode_register(chip, 0x00);          /* 0x00 = ? */
 581
 582        *version = get_version(chip);
 583        snd_sbdsp_reset(chip);  /* reset DSP after getversion! */
 584        if (*version >= 0x10 && *version <= 0x1f)
 585                result = 0;             /* valid version id */
 586
 587      __fail:
 588        spin_unlock_irqrestore(&chip->reg_lock, flags);
 589        return result;
 590}
 591
 592/*
 593 * get CSP version number
 594 */
 595static int get_version(struct snd_sb *chip)
 596{
 597        unsigned char dsp_cmd[2];
 598
 599        dsp_cmd[0] = 0x08;      /* SB_DSP_!something! */
 600        dsp_cmd[1] = 0x03;      /* get chip version id? */
 601        command_seq(chip, dsp_cmd, 2);
 602
 603        return (snd_sbdsp_get_byte(chip));
 604}
 605
 606/*
 607 * check if the CSP version is valid
 608 */
 609static int snd_sb_csp_check_version(struct snd_sb_csp * p)
 610{
 611        if (p->version < 0x10 || p->version > 0x1f) {
 612                snd_printd("%s: Invalid CSP version: 0x%x\n", __func__, p->version);
 613                return 1;
 614        }
 615        return 0;
 616}
 617
 618/*
 619 * download microcode to CSP (microcode should have one "main" block).
 620 */
 621static int snd_sb_csp_load(struct snd_sb_csp * p, const unsigned char *buf, int size, int load_flags)
 622{
 623        int status, i;
 624        int err;
 625        int result = -EIO;
 626        unsigned long flags;
 627
 628        spin_lock_irqsave(&p->chip->reg_lock, flags);
 629        snd_sbdsp_command(p->chip, 0x01);       /* CSP download command */
 630        if (snd_sbdsp_get_byte(p->chip)) {
 631                snd_printd("%s: Download command failed\n", __func__);
 632                goto __fail;
 633        }
 634        /* Send CSP low byte (size - 1) */
 635        snd_sbdsp_command(p->chip, (unsigned char)(size - 1));
 636        /* Send high byte */
 637        snd_sbdsp_command(p->chip, (unsigned char)((size - 1) >> 8));
 638        /* send microcode sequence */
 639        /* load from kernel space */
 640        while (size--) {
 641                if (!snd_sbdsp_command(p->chip, *buf++))
 642                        goto __fail;
 643        }
 644        if (snd_sbdsp_get_byte(p->chip))
 645                goto __fail;
 646
 647        if (load_flags & SNDRV_SB_CSP_LOAD_INITBLOCK) {
 648                i = 0;
 649                /* some codecs (FastSpeech) take some time to initialize */
 650                while (1) {
 651                        snd_sbdsp_command(p->chip, 0x03);
 652                        status = snd_sbdsp_get_byte(p->chip);
 653                        if (status == 0x55 || ++i >= 10)
 654                                break;
 655                        udelay (10);
 656                }
 657                if (status != 0x55) {
 658                        snd_printd("%s: Microcode initialization failed\n", __func__);
 659                        goto __fail;
 660                }
 661        } else {
 662                /*
 663                 * Read mixer register SB_DSP4_DMASETUP after loading 'main' code.
 664                 * Start CSP chip if no 16bit DMA channel is set - some kind
 665                 * of autorun or perhaps a bugfix?
 666                 */
 667                spin_lock(&p->chip->mixer_lock);
 668                status = snd_sbmixer_read(p->chip, SB_DSP4_DMASETUP);
 669                spin_unlock(&p->chip->mixer_lock);
 670                if (!(status & (SB_DMASETUP_DMA7 | SB_DMASETUP_DMA6 | SB_DMASETUP_DMA5))) {
 671                        err = (set_codec_parameter(p->chip, 0xaa, 0x00) ||
 672                               set_codec_parameter(p->chip, 0xff, 0x00));
 673                        snd_sbdsp_reset(p->chip);               /* really! */
 674                        if (err)
 675                                goto __fail;
 676                        set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
 677                        set_mode_register(p->chip, 0x70);       /* 70 = RUN */
 678                }
 679        }
 680        result = 0;
 681
 682      __fail:
 683        spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 684        return result;
 685}
 686 
 687static int snd_sb_csp_load_user(struct snd_sb_csp * p, const unsigned char __user *buf, int size, int load_flags)
 688{
 689        int err;
 690        unsigned char *kbuf;
 691
 692        kbuf = memdup_user(buf, size);
 693        if (IS_ERR(kbuf))
 694                return PTR_ERR(kbuf);
 695
 696        err = snd_sb_csp_load(p, kbuf, size, load_flags);
 697
 698        kfree(kbuf);
 699        return err;
 700}
 701
 702static int snd_sb_csp_firmware_load(struct snd_sb_csp *p, int index, int flags)
 703{
 704        static const char *const names[] = {
 705                "sb16/mulaw_main.csp",
 706                "sb16/alaw_main.csp",
 707                "sb16/ima_adpcm_init.csp",
 708                "sb16/ima_adpcm_playback.csp",
 709                "sb16/ima_adpcm_capture.csp",
 710        };
 711        const struct firmware *program;
 712
 713        BUILD_BUG_ON(ARRAY_SIZE(names) != CSP_PROGRAM_COUNT);
 714        program = p->csp_programs[index];
 715        if (!program) {
 716                int err = request_firmware(&program, names[index],
 717                                       p->chip->card->dev);
 718                if (err < 0)
 719                        return err;
 720                p->csp_programs[index] = program;
 721        }
 722        return snd_sb_csp_load(p, program->data, program->size, flags);
 723}
 724
 725/*
 726 * autoload hardware codec if necessary
 727 * return 0 if CSP is loaded and ready to run (p->running != 0)
 728 */
 729static int snd_sb_csp_autoload(struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode)
 730{
 731        unsigned long flags;
 732        int err = 0;
 733
 734        /* if CSP is running or manually loaded then exit */
 735        if (p->running & (SNDRV_SB_CSP_ST_RUNNING | SNDRV_SB_CSP_ST_LOADED)) 
 736                return -EBUSY;
 737
 738        /* autoload microcode only if requested hardware codec is not already loaded */
 739        if (((1 << pcm_sfmt) & p->acc_format) && (play_rec_mode & p->mode)) {
 740                p->running = SNDRV_SB_CSP_ST_AUTO;
 741        } else {
 742                switch (pcm_sfmt) {
 743                case SNDRV_PCM_FORMAT_MU_LAW:
 744                        err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_MULAW, 0);
 745                        p->acc_format = SNDRV_PCM_FMTBIT_MU_LAW;
 746                        p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
 747                        break;
 748                case SNDRV_PCM_FORMAT_A_LAW:
 749                        err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ALAW, 0);
 750                        p->acc_format = SNDRV_PCM_FMTBIT_A_LAW;
 751                        p->mode = SNDRV_SB_CSP_MODE_DSP_READ | SNDRV_SB_CSP_MODE_DSP_WRITE;
 752                        break;
 753                case SNDRV_PCM_FORMAT_IMA_ADPCM:
 754                        err = snd_sb_csp_firmware_load(p, CSP_PROGRAM_ADPCM_INIT,
 755                                                       SNDRV_SB_CSP_LOAD_INITBLOCK);
 756                        if (err)
 757                                break;
 758                        if (play_rec_mode == SNDRV_SB_CSP_MODE_DSP_WRITE) {
 759                                err = snd_sb_csp_firmware_load
 760                                        (p, CSP_PROGRAM_ADPCM_PLAYBACK, 0);
 761                                p->mode = SNDRV_SB_CSP_MODE_DSP_WRITE;
 762                        } else {
 763                                err = snd_sb_csp_firmware_load
 764                                        (p, CSP_PROGRAM_ADPCM_CAPTURE, 0);
 765                                p->mode = SNDRV_SB_CSP_MODE_DSP_READ;
 766                        }
 767                        p->acc_format = SNDRV_PCM_FMTBIT_IMA_ADPCM;
 768                        break;                            
 769                default:
 770                        /* Decouple CSP from IRQ and DMAREQ lines */
 771                        if (p->running & SNDRV_SB_CSP_ST_AUTO) {
 772                                spin_lock_irqsave(&p->chip->reg_lock, flags);
 773                                set_mode_register(p->chip, 0xfc);
 774                                set_mode_register(p->chip, 0x00);
 775                                spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 776                                p->running = 0;                 /* clear autoloaded flag */
 777                        }
 778                        return -EINVAL;
 779                }
 780                if (err) {
 781                        p->acc_format = 0;
 782                        p->acc_channels = p->acc_width = p->acc_rates = 0;
 783
 784                        p->running = 0;                         /* clear autoloaded flag */
 785                        p->mode = 0;
 786                        return (err);
 787                } else {
 788                        p->running = SNDRV_SB_CSP_ST_AUTO;      /* set autoloaded flag */
 789                        p->acc_width = SNDRV_SB_CSP_SAMPLE_16BIT;       /* only 16 bit data */
 790                        p->acc_channels = SNDRV_SB_CSP_MONO | SNDRV_SB_CSP_STEREO;
 791                        p->acc_rates = SNDRV_SB_CSP_RATE_ALL;   /* HW codecs accept all rates */
 792                }   
 793
 794        }
 795        return (p->running & SNDRV_SB_CSP_ST_AUTO) ? 0 : -ENXIO;
 796}
 797
 798/*
 799 * start CSP
 800 */
 801static int snd_sb_csp_start(struct snd_sb_csp * p, int sample_width, int channels)
 802{
 803        unsigned char s_type;   /* sample type */
 804        unsigned char mixL, mixR;
 805        int result = -EIO;
 806        unsigned long flags;
 807
 808        if (!(p->running & (SNDRV_SB_CSP_ST_LOADED | SNDRV_SB_CSP_ST_AUTO))) {
 809                snd_printd("%s: Microcode not loaded\n", __func__);
 810                return -ENXIO;
 811        }
 812        if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
 813                snd_printd("%s: CSP already running\n", __func__);
 814                return -EBUSY;
 815        }
 816        if (!(sample_width & p->acc_width)) {
 817                snd_printd("%s: Unsupported PCM sample width\n", __func__);
 818                return -EINVAL;
 819        }
 820        if (!(channels & p->acc_channels)) {
 821                snd_printd("%s: Invalid number of channels\n", __func__);
 822                return -EINVAL;
 823        }
 824
 825        /* Mute PCM volume */
 826        spin_lock_irqsave(&p->chip->mixer_lock, flags);
 827        mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
 828        mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
 829        snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
 830        snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
 831
 832        spin_lock(&p->chip->reg_lock);
 833        set_mode_register(p->chip, 0xc0);       /* c0 = STOP */
 834        set_mode_register(p->chip, 0x70);       /* 70 = RUN */
 835
 836        s_type = 0x00;
 837        if (channels == SNDRV_SB_CSP_MONO)
 838                s_type = 0x11;  /* 000n 000n    (n = 1 if mono) */
 839        if (sample_width == SNDRV_SB_CSP_SAMPLE_8BIT)
 840                s_type |= 0x22; /* 00dX 00dX    (d = 1 if 8 bit samples) */
 841
 842        if (set_codec_parameter(p->chip, 0x81, s_type)) {
 843                snd_printd("%s: Set sample type command failed\n", __func__);
 844                goto __fail;
 845        }
 846        if (set_codec_parameter(p->chip, 0x80, 0x00)) {
 847                snd_printd("%s: Codec start command failed\n", __func__);
 848                goto __fail;
 849        }
 850        p->run_width = sample_width;
 851        p->run_channels = channels;
 852
 853        p->running |= SNDRV_SB_CSP_ST_RUNNING;
 854
 855        if (p->mode & SNDRV_SB_CSP_MODE_QSOUND) {
 856                set_codec_parameter(p->chip, 0xe0, 0x01);
 857                /* enable QSound decoder */
 858                set_codec_parameter(p->chip, 0x00, 0xff);
 859                set_codec_parameter(p->chip, 0x01, 0xff);
 860                p->running |= SNDRV_SB_CSP_ST_QSOUND;
 861                /* set QSound startup value */
 862                snd_sb_csp_qsound_transfer(p);
 863        }
 864        result = 0;
 865
 866      __fail:
 867        spin_unlock(&p->chip->reg_lock);
 868
 869        /* restore PCM volume */
 870        snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
 871        snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
 872        spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
 873
 874        return result;
 875}
 876
 877/*
 878 * stop CSP
 879 */
 880static int snd_sb_csp_stop(struct snd_sb_csp * p)
 881{
 882        int result;
 883        unsigned char mixL, mixR;
 884        unsigned long flags;
 885
 886        if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
 887                return 0;
 888
 889        /* Mute PCM volume */
 890        spin_lock_irqsave(&p->chip->mixer_lock, flags);
 891        mixL = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV);
 892        mixR = snd_sbmixer_read(p->chip, SB_DSP4_PCM_DEV + 1);
 893        snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL & 0x7);
 894        snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR & 0x7);
 895
 896        spin_lock(&p->chip->reg_lock);
 897        if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
 898                set_codec_parameter(p->chip, 0xe0, 0x01);
 899                /* disable QSound decoder */
 900                set_codec_parameter(p->chip, 0x00, 0x00);
 901                set_codec_parameter(p->chip, 0x01, 0x00);
 902
 903                p->running &= ~SNDRV_SB_CSP_ST_QSOUND;
 904        }
 905        result = set_mode_register(p->chip, 0xc0);      /* c0 = STOP */
 906        spin_unlock(&p->chip->reg_lock);
 907
 908        /* restore PCM volume */
 909        snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV, mixL);
 910        snd_sbmixer_write(p->chip, SB_DSP4_PCM_DEV + 1, mixR);
 911        spin_unlock_irqrestore(&p->chip->mixer_lock, flags);
 912
 913        if (!(result))
 914                p->running &= ~(SNDRV_SB_CSP_ST_PAUSED | SNDRV_SB_CSP_ST_RUNNING);
 915        return result;
 916}
 917
 918/*
 919 * pause CSP codec and hold DMA transfer
 920 */
 921static int snd_sb_csp_pause(struct snd_sb_csp * p)
 922{
 923        int result;
 924        unsigned long flags;
 925
 926        if (!(p->running & SNDRV_SB_CSP_ST_RUNNING))
 927                return -EBUSY;
 928
 929        spin_lock_irqsave(&p->chip->reg_lock, flags);
 930        result = set_codec_parameter(p->chip, 0x80, 0xff);
 931        spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 932        if (!(result))
 933                p->running |= SNDRV_SB_CSP_ST_PAUSED;
 934
 935        return result;
 936}
 937
 938/*
 939 * restart CSP codec and resume DMA transfer
 940 */
 941static int snd_sb_csp_restart(struct snd_sb_csp * p)
 942{
 943        int result;
 944        unsigned long flags;
 945
 946        if (!(p->running & SNDRV_SB_CSP_ST_PAUSED))
 947                return -EBUSY;
 948
 949        spin_lock_irqsave(&p->chip->reg_lock, flags);
 950        result = set_codec_parameter(p->chip, 0x80, 0x00);
 951        spin_unlock_irqrestore(&p->chip->reg_lock, flags);
 952        if (!(result))
 953                p->running &= ~SNDRV_SB_CSP_ST_PAUSED;
 954
 955        return result;
 956}
 957
 958/* ------------------------------ */
 959
 960/*
 961 * QSound mixer control for PCM
 962 */
 963
 964#define snd_sb_qsound_switch_info       snd_ctl_boolean_mono_info
 965
 966static int snd_sb_qsound_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 967{
 968        struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
 969        
 970        ucontrol->value.integer.value[0] = p->q_enabled ? 1 : 0;
 971        return 0;
 972}
 973
 974static int snd_sb_qsound_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 975{
 976        struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
 977        unsigned long flags;
 978        int change;
 979        unsigned char nval;
 980        
 981        nval = ucontrol->value.integer.value[0] & 0x01;
 982        spin_lock_irqsave(&p->q_lock, flags);
 983        change = p->q_enabled != nval;
 984        p->q_enabled = nval;
 985        spin_unlock_irqrestore(&p->q_lock, flags);
 986        return change;
 987}
 988
 989static int snd_sb_qsound_space_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 990{
 991        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 992        uinfo->count = 2;
 993        uinfo->value.integer.min = 0;
 994        uinfo->value.integer.max = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
 995        return 0;
 996}
 997
 998static int snd_sb_qsound_space_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 999{
1000        struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1001        unsigned long flags;
1002        
1003        spin_lock_irqsave(&p->q_lock, flags);
1004        ucontrol->value.integer.value[0] = p->qpos_left;
1005        ucontrol->value.integer.value[1] = p->qpos_right;
1006        spin_unlock_irqrestore(&p->q_lock, flags);
1007        return 0;
1008}
1009
1010static int snd_sb_qsound_space_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1011{
1012        struct snd_sb_csp *p = snd_kcontrol_chip(kcontrol);
1013        unsigned long flags;
1014        int change;
1015        unsigned char nval1, nval2;
1016        
1017        nval1 = ucontrol->value.integer.value[0];
1018        if (nval1 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1019                nval1 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1020        nval2 = ucontrol->value.integer.value[1];
1021        if (nval2 > SNDRV_SB_CSP_QSOUND_MAX_RIGHT)
1022                nval2 = SNDRV_SB_CSP_QSOUND_MAX_RIGHT;
1023        spin_lock_irqsave(&p->q_lock, flags);
1024        change = p->qpos_left != nval1 || p->qpos_right != nval2;
1025        p->qpos_left = nval1;
1026        p->qpos_right = nval2;
1027        p->qpos_changed = change;
1028        spin_unlock_irqrestore(&p->q_lock, flags);
1029        return change;
1030}
1031
1032static struct snd_kcontrol_new snd_sb_qsound_switch = {
1033        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1034        .name = "3D Control - Switch",
1035        .info = snd_sb_qsound_switch_info,
1036        .get = snd_sb_qsound_switch_get,
1037        .put = snd_sb_qsound_switch_put
1038};
1039
1040static struct snd_kcontrol_new snd_sb_qsound_space = {
1041        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1042        .name = "3D Control - Space",
1043        .info = snd_sb_qsound_space_info,
1044        .get = snd_sb_qsound_space_get,
1045        .put = snd_sb_qsound_space_put
1046};
1047
1048static int snd_sb_qsound_build(struct snd_sb_csp * p)
1049{
1050        struct snd_card *card;
1051        int err;
1052
1053        if (snd_BUG_ON(!p))
1054                return -EINVAL;
1055
1056        card = p->chip->card;
1057        p->qpos_left = p->qpos_right = SNDRV_SB_CSP_QSOUND_MAX_RIGHT / 2;
1058        p->qpos_changed = 0;
1059
1060        spin_lock_init(&p->q_lock);
1061
1062        if ((err = snd_ctl_add(card, p->qsound_switch = snd_ctl_new1(&snd_sb_qsound_switch, p))) < 0)
1063                goto __error;
1064        if ((err = snd_ctl_add(card, p->qsound_space = snd_ctl_new1(&snd_sb_qsound_space, p))) < 0)
1065                goto __error;
1066
1067        return 0;
1068
1069     __error:
1070        snd_sb_qsound_destroy(p);
1071        return err;
1072}
1073
1074static void snd_sb_qsound_destroy(struct snd_sb_csp * p)
1075{
1076        struct snd_card *card;
1077        unsigned long flags;
1078
1079        if (snd_BUG_ON(!p))
1080                return;
1081
1082        card = p->chip->card;   
1083        
1084        down_write(&card->controls_rwsem);
1085        if (p->qsound_switch)
1086                snd_ctl_remove(card, p->qsound_switch);
1087        if (p->qsound_space)
1088                snd_ctl_remove(card, p->qsound_space);
1089        up_write(&card->controls_rwsem);
1090
1091        /* cancel pending transfer of QSound parameters */
1092        spin_lock_irqsave (&p->q_lock, flags);
1093        p->qpos_changed = 0;
1094        spin_unlock_irqrestore (&p->q_lock, flags);
1095}
1096
1097/*
1098 * Transfer qsound parameters to CSP,
1099 * function should be called from interrupt routine
1100 */
1101static int snd_sb_csp_qsound_transfer(struct snd_sb_csp * p)
1102{
1103        int err = -ENXIO;
1104
1105        spin_lock(&p->q_lock);
1106        if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1107                set_codec_parameter(p->chip, 0xe0, 0x01);
1108                /* left channel */
1109                set_codec_parameter(p->chip, 0x00, p->qpos_left);
1110                set_codec_parameter(p->chip, 0x02, 0x00);
1111                /* right channel */
1112                set_codec_parameter(p->chip, 0x00, p->qpos_right);
1113                set_codec_parameter(p->chip, 0x03, 0x00);
1114                err = 0;
1115        }
1116        p->qpos_changed = 0;
1117        spin_unlock(&p->q_lock);
1118        return err;
1119}
1120
1121/* ------------------------------ */
1122
1123/*
1124 * proc interface
1125 */
1126static int init_proc_entry(struct snd_sb_csp * p, int device)
1127{
1128        char name[16];
1129        struct snd_info_entry *entry;
1130        sprintf(name, "cspD%d", device);
1131        if (! snd_card_proc_new(p->chip->card, name, &entry))
1132                snd_info_set_text_ops(entry, p, info_read);
1133        return 0;
1134}
1135
1136static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1137{
1138        struct snd_sb_csp *p = entry->private_data;
1139
1140        snd_iprintf(buffer, "Creative Signal Processor [v%d.%d]\n", (p->version >> 4), (p->version & 0x0f));
1141        snd_iprintf(buffer, "State: %cx%c%c%c\n", ((p->running & SNDRV_SB_CSP_ST_QSOUND) ? 'Q' : '-'),
1142                    ((p->running & SNDRV_SB_CSP_ST_PAUSED) ? 'P' : '-'),
1143                    ((p->running & SNDRV_SB_CSP_ST_RUNNING) ? 'R' : '-'),
1144                    ((p->running & SNDRV_SB_CSP_ST_LOADED) ? 'L' : '-'));
1145        if (p->running & SNDRV_SB_CSP_ST_LOADED) {
1146                snd_iprintf(buffer, "Codec: %s [func #%d]\n", p->codec_name, p->func_nr);
1147                snd_iprintf(buffer, "Sample rates: ");
1148                if (p->acc_rates == SNDRV_SB_CSP_RATE_ALL) {
1149                        snd_iprintf(buffer, "All\n");
1150                } else {
1151                        snd_iprintf(buffer, "%s%s%s%s\n",
1152                                    ((p->acc_rates & SNDRV_SB_CSP_RATE_8000) ? "8000Hz " : ""),
1153                                    ((p->acc_rates & SNDRV_SB_CSP_RATE_11025) ? "11025Hz " : ""),
1154                                    ((p->acc_rates & SNDRV_SB_CSP_RATE_22050) ? "22050Hz " : ""),
1155                                    ((p->acc_rates & SNDRV_SB_CSP_RATE_44100) ? "44100Hz" : ""));
1156                }
1157                if (p->mode == SNDRV_SB_CSP_MODE_QSOUND) {
1158                        snd_iprintf(buffer, "QSound decoder %sabled\n",
1159                                    p->q_enabled ? "en" : "dis");
1160                } else {
1161                        snd_iprintf(buffer, "PCM format ID: 0x%x (%s/%s) [%s/%s] [%s/%s]\n",
1162                                    p->acc_format,
1163                                    ((p->acc_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? "16bit" : "-"),
1164                                    ((p->acc_width & SNDRV_SB_CSP_SAMPLE_8BIT) ? "8bit" : "-"),
1165                                    ((p->acc_channels & SNDRV_SB_CSP_MONO) ? "mono" : "-"),
1166                                    ((p->acc_channels & SNDRV_SB_CSP_STEREO) ? "stereo" : "-"),
1167                                    ((p->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) ? "playback" : "-"),
1168                                    ((p->mode & SNDRV_SB_CSP_MODE_DSP_READ) ? "capture" : "-"));
1169                }
1170        }
1171        if (p->running & SNDRV_SB_CSP_ST_AUTO) {
1172                snd_iprintf(buffer, "Autoloaded Mu-Law, A-Law or Ima-ADPCM hardware codec\n");
1173        }
1174        if (p->running & SNDRV_SB_CSP_ST_RUNNING) {
1175                snd_iprintf(buffer, "Processing %dbit %s PCM samples\n",
1176                            ((p->run_width & SNDRV_SB_CSP_SAMPLE_16BIT) ? 16 : 8),
1177                            ((p->run_channels & SNDRV_SB_CSP_MONO) ? "mono" : "stereo"));
1178        }
1179        if (p->running & SNDRV_SB_CSP_ST_QSOUND) {
1180                snd_iprintf(buffer, "Qsound position: left = 0x%x, right = 0x%x\n",
1181                            p->qpos_left, p->qpos_right);
1182        }
1183}
1184
1185/* */
1186
1187EXPORT_SYMBOL(snd_sb_csp_new);
1188
1189/*
1190 * INIT part
1191 */
1192
1193static int __init alsa_sb_csp_init(void)
1194{
1195        return 0;
1196}
1197
1198static void __exit alsa_sb_csp_exit(void)
1199{
1200}
1201
1202module_init(alsa_sb_csp_init)
1203module_exit(alsa_sb_csp_exit)
1204