kernel/sound/isa/msnd/msnd.c

   1 /*********************************************************************
   2  *
   3  * 2002/06/30 Karsten Wiese:
   4  *      removed kernel-version dependencies.
   5  *      ripped from linux kernel 2.4.18 (OSS Implementation) by me.
   6  *      In the OSS Version, this file is compiled to a separate MODULE,
   7  *      that is used by the pinnacle and the classic driver.
   8  *      since there is no classic driver for alsa yet (i dont have a classic
   9  *      & writing one blindfold is difficult) this file's object is statically
  10  *      linked into the pinnacle-driver-module for now. look for the string
  11  *              "uncomment this to make this a module again"
  12  *      to do guess what.
  13  *
  14  * the following is a copy of the 2.4.18 OSS FREE file-heading comment:
  15  *
  16  * msnd.c - Driver Base
  17  *
  18  * Turtle Beach MultiSound Sound Card Driver for Linux
  19  *
  20  * Copyright (C) 1998 Andrew Veliath
  21  *
  22  * This program is free software; you can redistribute it and/or modify
  23  * it under the terms of the GNU General Public License as published by
  24  * the Free Software Foundation; either version 2 of the License, or
  25  * (at your option) any later version.
  26  *
  27  * This program is distributed in the hope that it will be useful,
  28  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  29  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  30  * GNU General Public License for more details.
  31  *
  32  * You should have received a copy of the GNU General Public License
  33  * along with this program; if not, write to the Free Software
  34  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  35  *
  36  ********************************************************************/
  37
  38 #include <linux/kernel.h>
  39 #include <linux/types.h>
  40 #include <linux/interrupt.h>
  41 #include <linux/io.h>
  42 #include <linux/fs.h>
  43 #include <linux/delay.h>
  44 #include <linux/module.h>
  45
  46 #include <sound/core.h>
  47 #include <sound/initval.h>
  48 #include <sound/pcm.h>
  49 #include <sound/pcm_params.h>
  50
  51 #include "msnd.h"
  52
  53 #define LOGNAME                 "msnd"
  54
  55
  56 void snd_msnd_init_queue(void *base, int start, int size)
  57 {
  58         writew(PCTODSP_BASED(start), base + JQS_wStart);
  59         writew(PCTODSP_OFFSET(size) - 1, base + JQS_wSize);
  60         writew(0, base + JQS_wHead);
  61         writew(0, base + JQS_wTail);
  62 }
  63 EXPORT_SYMBOL(snd_msnd_init_queue);
  64
  65 static int snd_msnd_wait_TXDE(struct snd_msnd *dev)
  66 {
  67         unsigned int io = dev->io;
  68         int timeout = 1000;
  69
  70         while (timeout-- > 0)
  71                 if (inb(io + HP_ISR) & HPISR_TXDE)
  72                         return 0;
  73
  74         return -EIO;
  75 }
  76
  77 static int snd_msnd_wait_HC0(struct snd_msnd *dev)
  78 {
  79         unsigned int io = dev->io;
  80         int timeout = 1000;
  81
  82         while (timeout-- > 0)
  83                 if (!(inb(io + HP_CVR) & HPCVR_HC))
  84                         return 0;
  85
  86         return -EIO;
  87 }
  88
  89 int snd_msnd_send_dsp_cmd(struct snd_msnd *dev, u8 cmd)
  90 {
  91         unsigned long flags;
  92
  93         spin_lock_irqsave(&dev->lock, flags);
  94         if (snd_msnd_wait_HC0(dev) == 0) {
  95                 outb(cmd, dev->io + HP_CVR);
  96                 spin_unlock_irqrestore(&dev->lock, flags);
  97                 return 0;
  98         }
  99         spin_unlock_irqrestore(&dev->lock, flags);
 100
 101         snd_printd(KERN_ERR LOGNAME ": Send DSP command timeout\n");
 102
 103         return -EIO;
 104 }
 105 EXPORT_SYMBOL(snd_msnd_send_dsp_cmd);
 106
 107 int snd_msnd_send_word(struct snd_msnd *dev, unsigned char high,
 108                    unsigned char mid, unsigned char low)
 109 {
 110         unsigned int io = dev->io;
 111
 112         if (snd_msnd_wait_TXDE(dev) == 0) {
 113                 outb(high, io + HP_TXH);
 114                 outb(mid, io + HP_TXM);
 115                 outb(low, io + HP_TXL);
 116                 return 0;
 117         }
 118
 119         snd_printd(KERN_ERR LOGNAME ": Send host word timeout\n");
 120
 121         return -EIO;
 122 }
 123 EXPORT_SYMBOL(snd_msnd_send_word);
 124
 125 int snd_msnd_upload_host(struct snd_msnd *dev, const u8 *bin, int len)
 126 {
 127         int i;
 128
 129         if (len % 3 != 0) {
 130                 snd_printk(KERN_ERR LOGNAME
 131                            ": Upload host data not multiple of 3!\n");
 132                 return -EINVAL;
 133         }
 134
 135         for (i = 0; i < len; i += 3)
 136                 if (snd_msnd_send_word(dev, bin[i], bin[i + 1], bin[i + 2]))
 137                         return -EIO;
 138
 139         inb(dev->io + HP_RXL);
 140         inb(dev->io + HP_CVR);
 141
 142         return 0;
 143 }
 144 EXPORT_SYMBOL(snd_msnd_upload_host);
 145
 146 int snd_msnd_enable_irq(struct snd_msnd *dev)
 147 {
 148         unsigned long flags;
 149
 150         if (dev->irq_ref++)
 151                 return 0;
 152
 153         snd_printdd(LOGNAME ": Enabling IRQ\n");
 154
 155         spin_lock_irqsave(&dev->lock, flags);
 156         if (snd_msnd_wait_TXDE(dev) == 0) {
 157                 outb(inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR);
 158                 if (dev->type == msndClassic)
 159                         outb(dev->irqid, dev->io + HP_IRQM);
 160
 161                 outb(inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR);
 162                 outb(inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR);
 163                 enable_irq(dev->irq);
 164                 snd_msnd_init_queue(dev->DSPQ, dev->dspq_data_buff,
 165                                     dev->dspq_buff_size);
 166                 spin_unlock_irqrestore(&dev->lock, flags);
 167                 return 0;
 168         }
 169         spin_unlock_irqrestore(&dev->lock, flags);
 170
 171         snd_printd(KERN_ERR LOGNAME ": Enable IRQ failed\n");
 172
 173         return -EIO;
 174 }
 175 EXPORT_SYMBOL(snd_msnd_enable_irq);
 176
 177 int snd_msnd_disable_irq(struct snd_msnd *dev)
 178 {
 179         unsigned long flags;
 180
 181         if (--dev->irq_ref > 0)
 182                 return 0;
 183
 184         if (dev->irq_ref < 0)
 185                 snd_printd(KERN_WARNING LOGNAME ": IRQ ref count is %d\n",
 186                            dev->irq_ref);
 187
 188         snd_printdd(LOGNAME ": Disabling IRQ\n");
 189
 190         spin_lock_irqsave(&dev->lock, flags);
 191         if (snd_msnd_wait_TXDE(dev) == 0) {
 192                 outb(inb(dev->io + HP_ICR) & ~HPICR_RREQ, dev->io + HP_ICR);
 193                 if (dev->type == msndClassic)
 194                         outb(HPIRQ_NONE, dev->io + HP_IRQM);
 195                 disable_irq(dev->irq);
 196                 spin_unlock_irqrestore(&dev->lock, flags);
 197                 return 0;
 198         }
 199         spin_unlock_irqrestore(&dev->lock, flags);
 200
 201         snd_printd(KERN_ERR LOGNAME ": Disable IRQ failed\n");
 202
 203         return -EIO;
 204 }
 205 EXPORT_SYMBOL(snd_msnd_disable_irq);
 206
 207 static inline long get_play_delay_jiffies(struct snd_msnd *chip, long size)
 208 {
 209         long tmp = (size * HZ * chip->play_sample_size) / 8;
 210         return tmp / (chip->play_sample_rate * chip->play_channels);
 211 }
 212
 213 static void snd_msnd_dsp_write_flush(struct snd_msnd *chip)
 214 {
 215         if (!(chip->mode & FMODE_WRITE) || !test_bit(F_WRITING, &chip->flags))
 216                 return;
 217         set_bit(F_WRITEFLUSH, &chip->flags);
 218 /*      interruptible_sleep_on_timeout(
 219                 &chip->writeflush,
 220                 get_play_delay_jiffies(&chip, chip->DAPF.len));*/
 221         clear_bit(F_WRITEFLUSH, &chip->flags);
 222         if (!signal_pending(current))
 223                 schedule_timeout_interruptible(
 224                         get_play_delay_jiffies(chip, chip->play_period_bytes));
 225         clear_bit(F_WRITING, &chip->flags);
 226 }
 227
 228 void snd_msnd_dsp_halt(struct snd_msnd *chip, struct file *file)
 229 {
 230         if ((file ? file->f_mode : chip->mode) & FMODE_READ) {
 231                 clear_bit(F_READING, &chip->flags);
 232                 snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
 233                 snd_msnd_disable_irq(chip);
 234                 if (file) {
 235                         snd_printd(KERN_INFO LOGNAME
 236                                    ": Stopping read for %p\n", file);
 237                         chip->mode &= ~FMODE_READ;
 238                 }
 239                 clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
 240         }
 241         if ((file ? file->f_mode : chip->mode) & FMODE_WRITE) {
 242                 if (test_bit(F_WRITING, &chip->flags)) {
 243                         snd_msnd_dsp_write_flush(chip);
 244                         snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
 245                 }
 246                 snd_msnd_disable_irq(chip);
 247                 if (file) {
 248                         snd_printd(KERN_INFO
 249                                    LOGNAME ": Stopping write for %p\n", file);
 250                         chip->mode &= ~FMODE_WRITE;
 251                 }
 252                 clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
 253         }
 254 }
 255 EXPORT_SYMBOL(snd_msnd_dsp_halt);
 256
 257
 258 int snd_msnd_DARQ(struct snd_msnd *chip, int bank)
 259 {
 260         int /*size, n,*/ timeout = 3;
 261         u16 wTmp;
 262         /* void *DAQD; */
 263
 264         /* Increment the tail and check for queue wrap */
 265         wTmp = readw(chip->DARQ + JQS_wTail) + PCTODSP_OFFSET(DAQDS__size);
 266         if (wTmp > readw(chip->DARQ + JQS_wSize))
 267                 wTmp = 0;
 268         while (wTmp == readw(chip->DARQ + JQS_wHead) && timeout--)
 269                 udelay(1);
 270
 271         if (chip->capturePeriods == 2) {
 272                 void *pDAQ = chip->mappedbase + DARQ_DATA_BUFF +
 273                              bank * DAQDS__size + DAQDS_wStart;
 274                 unsigned short offset = 0x3000 + chip->capturePeriodBytes;
 275
 276                 if (readw(pDAQ) != PCTODSP_BASED(0x3000))
 277                         offset = 0x3000;
 278                 writew(PCTODSP_BASED(offset), pDAQ);
 279         }
 280
 281         writew(wTmp, chip->DARQ + JQS_wTail);
 282
 283 #if 0
 284         /* Get our digital audio queue struct */
 285         DAQD = bank * DAQDS__size + chip->mappedbase + DARQ_DATA_BUFF;
 286
 287         /* Get length of data */
 288         size = readw(DAQD + DAQDS_wSize);
 289
 290         /* Read data from the head (unprotected bank 1 access okay
 291            since this is only called inside an interrupt) */
 292         outb(HPBLKSEL_1, chip->io + HP_BLKS);
 293         n = msnd_fifo_write(&chip->DARF,
 294                             (char *)(chip->base + bank * DAR_BUFF_SIZE),
 295                             size, 0);
 296         if (n <= 0) {
 297                 outb(HPBLKSEL_0, chip->io + HP_BLKS);
 298                 return n;
 299         }
 300         outb(HPBLKSEL_0, chip->io + HP_BLKS);
 301 #endif
 302
 303         return 1;
 304 }
 305 EXPORT_SYMBOL(snd_msnd_DARQ);
 306
 307 int snd_msnd_DAPQ(struct snd_msnd *chip, int start)
 308 {
 309         u16     DAPQ_tail;
 310         int     protect = start, nbanks = 0;
 311         void    *DAQD;
 312         static int play_banks_submitted;
 313         /* unsigned long flags;
 314         spin_lock_irqsave(&chip->lock, flags); not necessary */
 315
 316         DAPQ_tail = readw(chip->DAPQ + JQS_wTail);
 317         while (DAPQ_tail != readw(chip->DAPQ + JQS_wHead) || start) {
 318                 int bank_num = DAPQ_tail / PCTODSP_OFFSET(DAQDS__size);
 319
 320                 if (start) {
 321                         start = 0;
 322                         play_banks_submitted = 0;
 323                 }
 324
 325                 /* Get our digital audio queue struct */
 326                 DAQD = bank_num * DAQDS__size + chip->mappedbase +
 327                         DAPQ_DATA_BUFF;
 328
 329                 /* Write size of this bank */
 330                 writew(chip->play_period_bytes, DAQD + DAQDS_wSize);
 331                 if (play_banks_submitted < 3)
 332                         ++play_banks_submitted;
 333                 else if (chip->playPeriods == 2) {
 334                         unsigned short offset = chip->play_period_bytes;
 335
 336                         if (readw(DAQD + DAQDS_wStart) != PCTODSP_BASED(0x0))
 337                                 offset = 0;
 338
 339                         writew(PCTODSP_BASED(offset), DAQD + DAQDS_wStart);
 340                 }
 341                 ++nbanks;
 342
 343                 /* Then advance the tail */
 344                 /*
 345                 if (protect)
 346                         snd_printd(KERN_INFO "B %X %lX\n",
 347                                    bank_num, xtime.tv_usec);
 348                 */
 349
 350                 DAPQ_tail = (++bank_num % 3) * PCTODSP_OFFSET(DAQDS__size);
 351                 writew(DAPQ_tail, chip->DAPQ + JQS_wTail);
 352                 /* Tell the DSP to play the bank */
 353                 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_START);
 354                 if (protect)
 355                         if (2 == bank_num)
 356                                 break;
 357         }
 358         /*
 359         if (protect)
 360                 snd_printd(KERN_INFO "%lX\n", xtime.tv_usec);
 361         */
 362         /* spin_unlock_irqrestore(&chip->lock, flags); not necessary */
 363         return nbanks;
 364 }
 365 EXPORT_SYMBOL(snd_msnd_DAPQ);
 366
 367 static void snd_msnd_play_reset_queue(struct snd_msnd *chip,
 368                                       unsigned int pcm_periods,
 369                                       unsigned int pcm_count)
 370 {
 371         int     n;
 372         void    *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
 373
 374         chip->last_playbank = -1;
 375         chip->playLimit = pcm_count * (pcm_periods - 1);
 376         chip->playPeriods = pcm_periods;
 377         writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wHead);
 378         writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wTail);
 379
 380         chip->play_period_bytes = pcm_count;
 381
 382         for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
 383                 writew(PCTODSP_BASED((u32)(pcm_count * n)),
 384                         pDAQ + DAQDS_wStart);
 385                 writew(0, pDAQ + DAQDS_wSize);
 386                 writew(1, pDAQ + DAQDS_wFormat);
 387                 writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
 388                 writew(chip->play_channels, pDAQ + DAQDS_wChannels);
 389                 writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
 390                 writew(HIMT_PLAY_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
 391                 writew(n, pDAQ + DAQDS_wFlags);
 392         }
 393 }
 394
 395 static void snd_msnd_capture_reset_queue(struct snd_msnd *chip,
 396                                          unsigned int pcm_periods,
 397                                          unsigned int pcm_count)
 398 {
 399         int             n;
 400         void            *pDAQ;
 401         /* unsigned long        flags; */
 402
 403         /* snd_msnd_init_queue(chip->DARQ, DARQ_DATA_BUFF, DARQ_BUFF_SIZE); */
 404
 405         chip->last_recbank = 2;
 406         chip->captureLimit = pcm_count * (pcm_periods - 1);
 407         chip->capturePeriods = pcm_periods;
 408         writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DARQ + JQS_wHead);
 409         writew(PCTODSP_OFFSET(chip->last_recbank * DAQDS__size),
 410                 chip->DARQ + JQS_wTail);
 411
 412 #if 0 /* Critical section: bank 1 access. this is how the OSS driver does it:*/
 413         spin_lock_irqsave(&chip->lock, flags);
 414         outb(HPBLKSEL_1, chip->io + HP_BLKS);
 415         memset_io(chip->mappedbase, 0, DAR_BUFF_SIZE * 3);
 416         outb(HPBLKSEL_0, chip->io + HP_BLKS);
 417         spin_unlock_irqrestore(&chip->lock, flags);
 418 #endif
 419
 420         chip->capturePeriodBytes = pcm_count;
 421         snd_printdd("snd_msnd_capture_reset_queue() %i\n", pcm_count);
 422
 423         pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
 424
 425         for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
 426                 u32 tmp = pcm_count * n;
 427
 428                 writew(PCTODSP_BASED(tmp + 0x3000), pDAQ + DAQDS_wStart);
 429                 writew(pcm_count, pDAQ + DAQDS_wSize);
 430                 writew(1, pDAQ + DAQDS_wFormat);
 431                 writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
 432                 writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
 433                 writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
 434                 writew(HIMT_RECORD_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
 435                 writew(n, pDAQ + DAQDS_wFlags);
 436         }
 437 }
 438
 439 static struct snd_pcm_hardware snd_msnd_playback = {
 440         .info =                 SNDRV_PCM_INFO_MMAP |
 441                                 SNDRV_PCM_INFO_INTERLEAVED |
 442                                 SNDRV_PCM_INFO_MMAP_VALID |
 443                                 SNDRV_PCM_INFO_BATCH,
 444         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
 445         .rates =                SNDRV_PCM_RATE_8000_48000,
 446         .rate_min =             8000,
 447         .rate_max =             48000,
 448         .channels_min =         1,
 449         .channels_max =         2,
 450         .buffer_bytes_max =     0x3000,
 451         .period_bytes_min =     0x40,
 452         .period_bytes_max =     0x1800,
 453         .periods_min =          2,
 454         .periods_max =          3,
 455         .fifo_size =            0,
 456 };
 457
 458 static struct snd_pcm_hardware snd_msnd_capture = {
 459         .info =                 SNDRV_PCM_INFO_MMAP |
 460                                 SNDRV_PCM_INFO_INTERLEAVED |
 461                                 SNDRV_PCM_INFO_MMAP_VALID |
 462                                 SNDRV_PCM_INFO_BATCH,
 463         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
 464         .rates =                SNDRV_PCM_RATE_8000_48000,
 465         .rate_min =             8000,
 466         .rate_max =             48000,
 467         .channels_min =         1,
 468         .channels_max =         2,
 469         .buffer_bytes_max =     0x3000,
 470         .period_bytes_min =     0x40,
 471         .period_bytes_max =     0x1800,
 472         .periods_min =          2,
 473         .periods_max =          3,
 474         .fifo_size =            0,
 475 };
 476
 477
 478 static int snd_msnd_playback_open(struct snd_pcm_substream *substream)
 479 {
 480         struct snd_pcm_runtime *runtime = substream->runtime;
 481         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 482
 483         set_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
 484         clear_bit(F_WRITING, &chip->flags);
 485         snd_msnd_enable_irq(chip);
 486
 487         runtime->dma_area = chip->mappedbase;
 488         runtime->dma_bytes = 0x3000;
 489
 490         chip->playback_substream = substream;
 491         runtime->hw = snd_msnd_playback;
 492         return 0;
 493 }
 494
 495 static int snd_msnd_playback_close(struct snd_pcm_substream *substream)
 496 {
 497         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 498
 499         snd_msnd_disable_irq(chip);
 500         clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
 501         return 0;
 502 }
 503
 504
 505 static int snd_msnd_playback_hw_params(struct snd_pcm_substream *substream,
 506                                         struct snd_pcm_hw_params *params)
 507 {
 508         int     i;
 509         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 510         void    *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
 511
 512         chip->play_sample_size = snd_pcm_format_width(params_format(params));
 513         chip->play_channels = params_channels(params);
 514         chip->play_sample_rate = params_rate(params);
 515
 516         for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
 517                 writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
 518                 writew(chip->play_channels, pDAQ + DAQDS_wChannels);
 519                 writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
 520         }
 521         /* dont do this here:
 522          * snd_msnd_calibrate_adc(chip->play_sample_rate);
 523          */
 524
 525         return 0;
 526 }
 527
 528 static int snd_msnd_playback_prepare(struct snd_pcm_substream *substream)
 529 {
 530         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 531         unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
 532         unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
 533         unsigned int pcm_periods = pcm_size / pcm_count;
 534
 535         snd_msnd_play_reset_queue(chip, pcm_periods, pcm_count);
 536         chip->playDMAPos = 0;
 537         return 0;
 538 }
 539
 540 static int snd_msnd_playback_trigger(struct snd_pcm_substream *substream,
 541                                      int cmd)
 542 {
 543         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 544         int     result = 0;
 545
 546         if (cmd == SNDRV_PCM_TRIGGER_START) {
 547                 snd_printdd("snd_msnd_playback_trigger(START)\n");
 548                 chip->banksPlayed = 0;
 549                 set_bit(F_WRITING, &chip->flags);
 550                 snd_msnd_DAPQ(chip, 1);
 551         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 552                 snd_printdd("snd_msnd_playback_trigger(STop)\n");
 553                 /* interrupt diagnostic, comment this out later */
 554                 clear_bit(F_WRITING, &chip->flags);
 555                 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
 556         } else {
 557                 snd_printd(KERN_ERR "snd_msnd_playback_trigger(?????)\n");
 558                 result = -EINVAL;
 559         }
 560
 561         snd_printdd("snd_msnd_playback_trigger() ENDE\n");
 562         return result;
 563 }
 564
 565 static snd_pcm_uframes_t
 566 snd_msnd_playback_pointer(struct snd_pcm_substream *substream)
 567 {
 568         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 569
 570         return bytes_to_frames(substream->runtime, chip->playDMAPos);
 571 }
 572
 573
 574 static struct snd_pcm_ops snd_msnd_playback_ops = {
 575         .open =         snd_msnd_playback_open,
 576         .close =        snd_msnd_playback_close,
 577         .ioctl =        snd_pcm_lib_ioctl,
 578         .hw_params =    snd_msnd_playback_hw_params,
 579         .prepare =      snd_msnd_playback_prepare,
 580         .trigger =      snd_msnd_playback_trigger,
 581         .pointer =      snd_msnd_playback_pointer,
 582 };
 583
 584 static int snd_msnd_capture_open(struct snd_pcm_substream *substream)
 585 {
 586         struct snd_pcm_runtime *runtime = substream->runtime;
 587         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 588
 589         set_bit(F_AUDIO_READ_INUSE, &chip->flags);
 590         snd_msnd_enable_irq(chip);
 591         runtime->dma_area = chip->mappedbase + 0x3000;
 592         runtime->dma_bytes = 0x3000;
 593         memset(runtime->dma_area, 0, runtime->dma_bytes);
 594         chip->capture_substream = substream;
 595         runtime->hw = snd_msnd_capture;
 596         return 0;
 597 }
 598
 599 static int snd_msnd_capture_close(struct snd_pcm_substream *substream)
 600 {
 601         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 602
 603         snd_msnd_disable_irq(chip);
 604         clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
 605         return 0;
 606 }
 607
 608 static int snd_msnd_capture_prepare(struct snd_pcm_substream *substream)
 609 {
 610         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 611         unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
 612         unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
 613         unsigned int pcm_periods = pcm_size / pcm_count;
 614
 615         snd_msnd_capture_reset_queue(chip, pcm_periods, pcm_count);
 616         chip->captureDMAPos = 0;
 617         return 0;
 618 }
 619
 620 static int snd_msnd_capture_trigger(struct snd_pcm_substream *substream,
 621                                     int cmd)
 622 {
 623         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 624
 625         if (cmd == SNDRV_PCM_TRIGGER_START) {
 626                 chip->last_recbank = -1;
 627                 set_bit(F_READING, &chip->flags);
 628                 if (snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_START) == 0)
 629                         return 0;
 630
 631                 clear_bit(F_READING, &chip->flags);
 632         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 633                 clear_bit(F_READING, &chip->flags);
 634                 snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
 635                 return 0;
 636         }
 637         return -EINVAL;
 638 }
 639
 640
 641 static snd_pcm_uframes_t
 642 snd_msnd_capture_pointer(struct snd_pcm_substream *substream)
 643 {
 644         struct snd_pcm_runtime *runtime = substream->runtime;
 645         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 646
 647         return bytes_to_frames(runtime, chip->captureDMAPos);
 648 }
 649
 650
 651 static int snd_msnd_capture_hw_params(struct snd_pcm_substream *substream,
 652                                         struct snd_pcm_hw_params *params)
 653 {
 654         int             i;
 655         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 656         void            *pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
 657
 658         chip->capture_sample_size = snd_pcm_format_width(params_format(params));
 659         chip->capture_channels = params_channels(params);
 660         chip->capture_sample_rate = params_rate(params);
 661
 662         for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
 663                 writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
 664                 writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
 665                 writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
 666         }
 667         return 0;
 668 }
 669
 670
 671 static struct snd_pcm_ops snd_msnd_capture_ops = {
 672         .open =         snd_msnd_capture_open,
 673         .close =        snd_msnd_capture_close,
 674         .ioctl =        snd_pcm_lib_ioctl,
 675         .hw_params =    snd_msnd_capture_hw_params,
 676         .prepare =      snd_msnd_capture_prepare,
 677         .trigger =      snd_msnd_capture_trigger,
 678         .pointer =      snd_msnd_capture_pointer,
 679 };
 680
 681
 682 int snd_msnd_pcm(struct snd_card *card, int device)
 683 {
 684         struct snd_msnd *chip = card->private_data;
 685         struct snd_pcm  *pcm;
 686         int err;
 687
 688         err = snd_pcm_new(card, "MSNDPINNACLE", device, 1, 1, &pcm);
 689         if (err < 0)
 690                 return err;
 691
 692         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_msnd_playback_ops);
 693         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_msnd_capture_ops);
 694
 695         pcm->private_data = chip;
 696         strcpy(pcm->name, "Hurricane");
 697
 698         return 0;
 699 }
 700 EXPORT_SYMBOL(snd_msnd_pcm);
 701
 702 MODULE_DESCRIPTION("Common routines for Turtle Beach Multisound drivers");
 703 MODULE_LICENSE("GPL");
 704