sound/isa/msnd/msnd.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*********************************************************************
   3  *
   4  * 2002/06/30 Karsten Wiese:
   5  *      removed kernel-version dependencies.
   6  *      ripped from linux kernel 2.4.18 (OSS Implementation) by me.
   7  *      In the OSS Version, this file is compiled to a separate MODULE,
   8  *      that is used by the pinnacle and the classic driver.
   9  *      since there is no classic driver for alsa yet (i dont have a classic
  10  *      & writing one blindfold is difficult) this file's object is statically
  11  *      linked into the pinnacle-driver-module for now. look for the string
  12  *              "uncomment this to make this a module again"
  13  *      to do guess what.
  14  *
  15  * the following is a copy of the 2.4.18 OSS FREE file-heading comment:
  16  *
  17  * msnd.c - Driver Base
  18  *
  19  * Turtle Beach MultiSound Sound Card Driver for Linux
  20  *
  21  * Copyright (C) 1998 Andrew Veliath
  22  *
  23  ********************************************************************/
  24
  25 #include <linux/kernel.h>
  26 #include <linux/sched/signal.h>
  27 #include <linux/types.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/io.h>
  30 #include <linux/fs.h>
  31 #include <linux/delay.h>
  32 #include <linux/module.h>
  33
  34 #include <sound/core.h>
  35 #include <sound/initval.h>
  36 #include <sound/pcm.h>
  37 #include <sound/pcm_params.h>
  38
  39 #include "msnd.h"
  40
  41 #define LOGNAME                 "msnd"
  42
  43
  44 void snd_msnd_init_queue(void __iomem *base, int start, int size)
  45 {
  46         writew(PCTODSP_BASED(start), base + JQS_wStart);
  47         writew(PCTODSP_OFFSET(size) - 1, base + JQS_wSize);
  48         writew(0, base + JQS_wHead);
  49         writew(0, base + JQS_wTail);
  50 }
  51 EXPORT_SYMBOL(snd_msnd_init_queue);
  52
  53 static int snd_msnd_wait_TXDE(struct snd_msnd *dev)
  54 {
  55         unsigned int io = dev->io;
  56         int timeout = 1000;
  57
  58         while (timeout-- > 0)
  59                 if (inb(io + HP_ISR) & HPISR_TXDE)
  60                         return 0;
  61
  62         return -EIO;
  63 }
  64
  65 static int snd_msnd_wait_HC0(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_CVR) & HPCVR_HC))
  72                         return 0;
  73
  74         return -EIO;
  75 }
  76
  77 int snd_msnd_send_dsp_cmd(struct snd_msnd *dev, u8 cmd)
  78 {
  79         unsigned long flags;
  80
  81         spin_lock_irqsave(&dev->lock, flags);
  82         if (snd_msnd_wait_HC0(dev) == 0) {
  83                 outb(cmd, dev->io + HP_CVR);
  84                 spin_unlock_irqrestore(&dev->lock, flags);
  85                 return 0;
  86         }
  87         spin_unlock_irqrestore(&dev->lock, flags);
  88
  89         snd_printd(KERN_ERR LOGNAME ": Send DSP command timeout\n");
  90
  91         return -EIO;
  92 }
  93 EXPORT_SYMBOL(snd_msnd_send_dsp_cmd);
  94
  95 int snd_msnd_send_word(struct snd_msnd *dev, unsigned char high,
  96                    unsigned char mid, unsigned char low)
  97 {
  98         unsigned int io = dev->io;
  99
 100         if (snd_msnd_wait_TXDE(dev) == 0) {
 101                 outb(high, io + HP_TXH);
 102                 outb(mid, io + HP_TXM);
 103                 outb(low, io + HP_TXL);
 104                 return 0;
 105         }
 106
 107         snd_printd(KERN_ERR LOGNAME ": Send host word timeout\n");
 108
 109         return -EIO;
 110 }
 111 EXPORT_SYMBOL(snd_msnd_send_word);
 112
 113 int snd_msnd_upload_host(struct snd_msnd *dev, const u8 *bin, int len)
 114 {
 115         int i;
 116
 117         if (len % 3 != 0) {
 118                 snd_printk(KERN_ERR LOGNAME
 119                            ": Upload host data not multiple of 3!\n");
 120                 return -EINVAL;
 121         }
 122
 123         for (i = 0; i < len; i += 3)
 124                 if (snd_msnd_send_word(dev, bin[i], bin[i + 1], bin[i + 2]))
 125                         return -EIO;
 126
 127         inb(dev->io + HP_RXL);
 128         inb(dev->io + HP_CVR);
 129
 130         return 0;
 131 }
 132 EXPORT_SYMBOL(snd_msnd_upload_host);
 133
 134 int snd_msnd_enable_irq(struct snd_msnd *dev)
 135 {
 136         unsigned long flags;
 137
 138         if (dev->irq_ref++)
 139                 return 0;
 140
 141         snd_printdd(LOGNAME ": Enabling IRQ\n");
 142
 143         spin_lock_irqsave(&dev->lock, flags);
 144         if (snd_msnd_wait_TXDE(dev) == 0) {
 145                 outb(inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR);
 146                 if (dev->type == msndClassic)
 147                         outb(dev->irqid, dev->io + HP_IRQM);
 148
 149                 outb(inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR);
 150                 outb(inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR);
 151                 enable_irq(dev->irq);
 152                 snd_msnd_init_queue(dev->DSPQ, dev->dspq_data_buff,
 153                                     dev->dspq_buff_size);
 154                 spin_unlock_irqrestore(&dev->lock, flags);
 155                 return 0;
 156         }
 157         spin_unlock_irqrestore(&dev->lock, flags);
 158
 159         snd_printd(KERN_ERR LOGNAME ": Enable IRQ failed\n");
 160
 161         return -EIO;
 162 }
 163 EXPORT_SYMBOL(snd_msnd_enable_irq);
 164
 165 int snd_msnd_disable_irq(struct snd_msnd *dev)
 166 {
 167         unsigned long flags;
 168
 169         if (--dev->irq_ref > 0)
 170                 return 0;
 171
 172         if (dev->irq_ref < 0)
 173                 snd_printd(KERN_WARNING LOGNAME ": IRQ ref count is %d\n",
 174                            dev->irq_ref);
 175
 176         snd_printdd(LOGNAME ": Disabling IRQ\n");
 177
 178         spin_lock_irqsave(&dev->lock, flags);
 179         if (snd_msnd_wait_TXDE(dev) == 0) {
 180                 outb(inb(dev->io + HP_ICR) & ~HPICR_RREQ, dev->io + HP_ICR);
 181                 if (dev->type == msndClassic)
 182                         outb(HPIRQ_NONE, dev->io + HP_IRQM);
 183                 disable_irq(dev->irq);
 184                 spin_unlock_irqrestore(&dev->lock, flags);
 185                 return 0;
 186         }
 187         spin_unlock_irqrestore(&dev->lock, flags);
 188
 189         snd_printd(KERN_ERR LOGNAME ": Disable IRQ failed\n");
 190
 191         return -EIO;
 192 }
 193 EXPORT_SYMBOL(snd_msnd_disable_irq);
 194
 195 static inline long get_play_delay_jiffies(struct snd_msnd *chip, long size)
 196 {
 197         long tmp = (size * HZ * chip->play_sample_size) / 8;
 198         return tmp / (chip->play_sample_rate * chip->play_channels);
 199 }
 200
 201 static void snd_msnd_dsp_write_flush(struct snd_msnd *chip)
 202 {
 203         if (!(chip->mode & FMODE_WRITE) || !test_bit(F_WRITING, &chip->flags))
 204                 return;
 205         set_bit(F_WRITEFLUSH, &chip->flags);
 206 /*      interruptible_sleep_on_timeout(
 207                 &chip->writeflush,
 208                 get_play_delay_jiffies(&chip, chip->DAPF.len));*/
 209         clear_bit(F_WRITEFLUSH, &chip->flags);
 210         if (!signal_pending(current))
 211                 schedule_timeout_interruptible(
 212                         get_play_delay_jiffies(chip, chip->play_period_bytes));
 213         clear_bit(F_WRITING, &chip->flags);
 214 }
 215
 216 void snd_msnd_dsp_halt(struct snd_msnd *chip, struct file *file)
 217 {
 218         if ((file ? file->f_mode : chip->mode) & FMODE_READ) {
 219                 clear_bit(F_READING, &chip->flags);
 220                 snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
 221                 snd_msnd_disable_irq(chip);
 222                 if (file) {
 223                         snd_printd(KERN_INFO LOGNAME
 224                                    ": Stopping read for %p\n", file);
 225                         chip->mode &= ~FMODE_READ;
 226                 }
 227                 clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
 228         }
 229         if ((file ? file->f_mode : chip->mode) & FMODE_WRITE) {
 230                 if (test_bit(F_WRITING, &chip->flags)) {
 231                         snd_msnd_dsp_write_flush(chip);
 232                         snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
 233                 }
 234                 snd_msnd_disable_irq(chip);
 235                 if (file) {
 236                         snd_printd(KERN_INFO
 237                                    LOGNAME ": Stopping write for %p\n", file);
 238                         chip->mode &= ~FMODE_WRITE;
 239                 }
 240                 clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
 241         }
 242 }
 243 EXPORT_SYMBOL(snd_msnd_dsp_halt);
 244
 245
 246 int snd_msnd_DARQ(struct snd_msnd *chip, int bank)
 247 {
 248         int /*size, n,*/ timeout = 3;
 249         u16 wTmp;
 250         /* void *DAQD; */
 251
 252         /* Increment the tail and check for queue wrap */
 253         wTmp = readw(chip->DARQ + JQS_wTail) + PCTODSP_OFFSET(DAQDS__size);
 254         if (wTmp > readw(chip->DARQ + JQS_wSize))
 255                 wTmp = 0;
 256         while (wTmp == readw(chip->DARQ + JQS_wHead) && timeout--)
 257                 udelay(1);
 258
 259         if (chip->capturePeriods == 2) {
 260                 void __iomem *pDAQ = chip->mappedbase + DARQ_DATA_BUFF +
 261                              bank * DAQDS__size + DAQDS_wStart;
 262                 unsigned short offset = 0x3000 + chip->capturePeriodBytes;
 263
 264                 if (readw(pDAQ) != PCTODSP_BASED(0x3000))
 265                         offset = 0x3000;
 266                 writew(PCTODSP_BASED(offset), pDAQ);
 267         }
 268
 269         writew(wTmp, chip->DARQ + JQS_wTail);
 270
 271 #if 0
 272         /* Get our digital audio queue struct */
 273         DAQD = bank * DAQDS__size + chip->mappedbase + DARQ_DATA_BUFF;
 274
 275         /* Get length of data */
 276         size = readw(DAQD + DAQDS_wSize);
 277
 278         /* Read data from the head (unprotected bank 1 access okay
 279            since this is only called inside an interrupt) */
 280         outb(HPBLKSEL_1, chip->io + HP_BLKS);
 281         n = msnd_fifo_write(&chip->DARF,
 282                             (char *)(chip->base + bank * DAR_BUFF_SIZE),
 283                             size, 0);
 284         if (n <= 0) {
 285                 outb(HPBLKSEL_0, chip->io + HP_BLKS);
 286                 return n;
 287         }
 288         outb(HPBLKSEL_0, chip->io + HP_BLKS);
 289 #endif
 290
 291         return 1;
 292 }
 293 EXPORT_SYMBOL(snd_msnd_DARQ);
 294
 295 int snd_msnd_DAPQ(struct snd_msnd *chip, int start)
 296 {
 297         u16     DAPQ_tail;
 298         int     protect = start, nbanks = 0;
 299         void    __iomem *DAQD;
 300         static int play_banks_submitted;
 301         /* unsigned long flags;
 302         spin_lock_irqsave(&chip->lock, flags); not necessary */
 303
 304         DAPQ_tail = readw(chip->DAPQ + JQS_wTail);
 305         while (DAPQ_tail != readw(chip->DAPQ + JQS_wHead) || start) {
 306                 int bank_num = DAPQ_tail / PCTODSP_OFFSET(DAQDS__size);
 307
 308                 if (start) {
 309                         start = 0;
 310                         play_banks_submitted = 0;
 311                 }
 312
 313                 /* Get our digital audio queue struct */
 314                 DAQD = bank_num * DAQDS__size + chip->mappedbase +
 315                         DAPQ_DATA_BUFF;
 316
 317                 /* Write size of this bank */
 318                 writew(chip->play_period_bytes, DAQD + DAQDS_wSize);
 319                 if (play_banks_submitted < 3)
 320                         ++play_banks_submitted;
 321                 else if (chip->playPeriods == 2) {
 322                         unsigned short offset = chip->play_period_bytes;
 323
 324                         if (readw(DAQD + DAQDS_wStart) != PCTODSP_BASED(0x0))
 325                                 offset = 0;
 326
 327                         writew(PCTODSP_BASED(offset), DAQD + DAQDS_wStart);
 328                 }
 329                 ++nbanks;
 330
 331                 /* Then advance the tail */
 332                 /*
 333                 if (protect)
 334                         snd_printd(KERN_INFO "B %X %lX\n",
 335                                    bank_num, xtime.tv_usec);
 336                 */
 337
 338                 DAPQ_tail = (++bank_num % 3) * PCTODSP_OFFSET(DAQDS__size);
 339                 writew(DAPQ_tail, chip->DAPQ + JQS_wTail);
 340                 /* Tell the DSP to play the bank */
 341                 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_START);
 342                 if (protect)
 343                         if (2 == bank_num)
 344                                 break;
 345         }
 346         /*
 347         if (protect)
 348                 snd_printd(KERN_INFO "%lX\n", xtime.tv_usec);
 349         */
 350         /* spin_unlock_irqrestore(&chip->lock, flags); not necessary */
 351         return nbanks;
 352 }
 353 EXPORT_SYMBOL(snd_msnd_DAPQ);
 354
 355 static void snd_msnd_play_reset_queue(struct snd_msnd *chip,
 356                                       unsigned int pcm_periods,
 357                                       unsigned int pcm_count)
 358 {
 359         int     n;
 360         void    __iomem *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
 361
 362         chip->last_playbank = -1;
 363         chip->playLimit = pcm_count * (pcm_periods - 1);
 364         chip->playPeriods = pcm_periods;
 365         writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wHead);
 366         writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wTail);
 367
 368         chip->play_period_bytes = pcm_count;
 369
 370         for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
 371                 writew(PCTODSP_BASED((u32)(pcm_count * n)),
 372                         pDAQ + DAQDS_wStart);
 373                 writew(0, pDAQ + DAQDS_wSize);
 374                 writew(1, pDAQ + DAQDS_wFormat);
 375                 writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
 376                 writew(chip->play_channels, pDAQ + DAQDS_wChannels);
 377                 writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
 378                 writew(HIMT_PLAY_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
 379                 writew(n, pDAQ + DAQDS_wFlags);
 380         }
 381 }
 382
 383 static void snd_msnd_capture_reset_queue(struct snd_msnd *chip,
 384                                          unsigned int pcm_periods,
 385                                          unsigned int pcm_count)
 386 {
 387         int             n;
 388         void            __iomem *pDAQ;
 389         /* unsigned long        flags; */
 390
 391         /* snd_msnd_init_queue(chip->DARQ, DARQ_DATA_BUFF, DARQ_BUFF_SIZE); */
 392
 393         chip->last_recbank = 2;
 394         chip->captureLimit = pcm_count * (pcm_periods - 1);
 395         chip->capturePeriods = pcm_periods;
 396         writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DARQ + JQS_wHead);
 397         writew(PCTODSP_OFFSET(chip->last_recbank * DAQDS__size),
 398                 chip->DARQ + JQS_wTail);
 399
 400 #if 0 /* Critical section: bank 1 access. this is how the OSS driver does it:*/
 401         spin_lock_irqsave(&chip->lock, flags);
 402         outb(HPBLKSEL_1, chip->io + HP_BLKS);
 403         memset_io(chip->mappedbase, 0, DAR_BUFF_SIZE * 3);
 404         outb(HPBLKSEL_0, chip->io + HP_BLKS);
 405         spin_unlock_irqrestore(&chip->lock, flags);
 406 #endif
 407
 408         chip->capturePeriodBytes = pcm_count;
 409         snd_printdd("snd_msnd_capture_reset_queue() %i\n", pcm_count);
 410
 411         pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
 412
 413         for (n = 0; n < pcm_periods; ++n, pDAQ += DAQDS__size) {
 414                 u32 tmp = pcm_count * n;
 415
 416                 writew(PCTODSP_BASED(tmp + 0x3000), pDAQ + DAQDS_wStart);
 417                 writew(pcm_count, pDAQ + DAQDS_wSize);
 418                 writew(1, pDAQ + DAQDS_wFormat);
 419                 writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
 420                 writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
 421                 writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
 422                 writew(HIMT_RECORD_DONE * 0x100 + n, pDAQ + DAQDS_wIntMsg);
 423                 writew(n, pDAQ + DAQDS_wFlags);
 424         }
 425 }
 426
 427 static const struct snd_pcm_hardware snd_msnd_playback = {
 428         .info =                 SNDRV_PCM_INFO_MMAP_IOMEM |
 429                                 SNDRV_PCM_INFO_INTERLEAVED |
 430                                 SNDRV_PCM_INFO_MMAP_VALID |
 431                                 SNDRV_PCM_INFO_BATCH,
 432         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
 433         .rates =                SNDRV_PCM_RATE_8000_48000,
 434         .rate_min =             8000,
 435         .rate_max =             48000,
 436         .channels_min =         1,
 437         .channels_max =         2,
 438         .buffer_bytes_max =     0x3000,
 439         .period_bytes_min =     0x40,
 440         .period_bytes_max =     0x1800,
 441         .periods_min =          2,
 442         .periods_max =          3,
 443         .fifo_size =            0,
 444 };
 445
 446 static const struct snd_pcm_hardware snd_msnd_capture = {
 447         .info =                 SNDRV_PCM_INFO_MMAP_IOMEM |
 448                                 SNDRV_PCM_INFO_INTERLEAVED |
 449                                 SNDRV_PCM_INFO_MMAP_VALID |
 450                                 SNDRV_PCM_INFO_BATCH,
 451         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
 452         .rates =                SNDRV_PCM_RATE_8000_48000,
 453         .rate_min =             8000,
 454         .rate_max =             48000,
 455         .channels_min =         1,
 456         .channels_max =         2,
 457         .buffer_bytes_max =     0x3000,
 458         .period_bytes_min =     0x40,
 459         .period_bytes_max =     0x1800,
 460         .periods_min =          2,
 461         .periods_max =          3,
 462         .fifo_size =            0,
 463 };
 464
 465
 466 static int snd_msnd_playback_open(struct snd_pcm_substream *substream)
 467 {
 468         struct snd_pcm_runtime *runtime = substream->runtime;
 469         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 470
 471         set_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
 472         clear_bit(F_WRITING, &chip->flags);
 473         snd_msnd_enable_irq(chip);
 474
 475         runtime->dma_area = (__force void *)chip->mappedbase;
 476         runtime->dma_addr = chip->base;
 477         runtime->dma_bytes = 0x3000;
 478
 479         chip->playback_substream = substream;
 480         runtime->hw = snd_msnd_playback;
 481         return 0;
 482 }
 483
 484 static int snd_msnd_playback_close(struct snd_pcm_substream *substream)
 485 {
 486         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 487
 488         snd_msnd_disable_irq(chip);
 489         clear_bit(F_AUDIO_WRITE_INUSE, &chip->flags);
 490         return 0;
 491 }
 492
 493
 494 static int snd_msnd_playback_hw_params(struct snd_pcm_substream *substream,
 495                                         struct snd_pcm_hw_params *params)
 496 {
 497         int     i;
 498         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 499         void    __iomem *pDAQ = chip->mappedbase + DAPQ_DATA_BUFF;
 500
 501         chip->play_sample_size = snd_pcm_format_width(params_format(params));
 502         chip->play_channels = params_channels(params);
 503         chip->play_sample_rate = params_rate(params);
 504
 505         for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
 506                 writew(chip->play_sample_size, pDAQ + DAQDS_wSampleSize);
 507                 writew(chip->play_channels, pDAQ + DAQDS_wChannels);
 508                 writew(chip->play_sample_rate, pDAQ + DAQDS_wSampleRate);
 509         }
 510         /* dont do this here:
 511          * snd_msnd_calibrate_adc(chip->play_sample_rate);
 512          */
 513
 514         return 0;
 515 }
 516
 517 static int snd_msnd_playback_prepare(struct snd_pcm_substream *substream)
 518 {
 519         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 520         unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
 521         unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
 522         unsigned int pcm_periods = pcm_size / pcm_count;
 523
 524         snd_msnd_play_reset_queue(chip, pcm_periods, pcm_count);
 525         chip->playDMAPos = 0;
 526         return 0;
 527 }
 528
 529 static int snd_msnd_playback_trigger(struct snd_pcm_substream *substream,
 530                                      int cmd)
 531 {
 532         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 533         int     result = 0;
 534
 535         if (cmd == SNDRV_PCM_TRIGGER_START) {
 536                 snd_printdd("snd_msnd_playback_trigger(START)\n");
 537                 chip->banksPlayed = 0;
 538                 set_bit(F_WRITING, &chip->flags);
 539                 snd_msnd_DAPQ(chip, 1);
 540         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 541                 snd_printdd("snd_msnd_playback_trigger(STop)\n");
 542                 /* interrupt diagnostic, comment this out later */
 543                 clear_bit(F_WRITING, &chip->flags);
 544                 snd_msnd_send_dsp_cmd(chip, HDEX_PLAY_STOP);
 545         } else {
 546                 snd_printd(KERN_ERR "snd_msnd_playback_trigger(?????)\n");
 547                 result = -EINVAL;
 548         }
 549
 550         snd_printdd("snd_msnd_playback_trigger() ENDE\n");
 551         return result;
 552 }
 553
 554 static snd_pcm_uframes_t
 555 snd_msnd_playback_pointer(struct snd_pcm_substream *substream)
 556 {
 557         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 558
 559         return bytes_to_frames(substream->runtime, chip->playDMAPos);
 560 }
 561
 562
 563 static const struct snd_pcm_ops snd_msnd_playback_ops = {
 564         .open =         snd_msnd_playback_open,
 565         .close =        snd_msnd_playback_close,
 566         .hw_params =    snd_msnd_playback_hw_params,
 567         .prepare =      snd_msnd_playback_prepare,
 568         .trigger =      snd_msnd_playback_trigger,
 569         .pointer =      snd_msnd_playback_pointer,
 570         .mmap =         snd_pcm_lib_mmap_iomem,
 571 };
 572
 573 static int snd_msnd_capture_open(struct snd_pcm_substream *substream)
 574 {
 575         struct snd_pcm_runtime *runtime = substream->runtime;
 576         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 577
 578         set_bit(F_AUDIO_READ_INUSE, &chip->flags);
 579         snd_msnd_enable_irq(chip);
 580         runtime->dma_area = (__force void *)chip->mappedbase + 0x3000;
 581         runtime->dma_addr = chip->base + 0x3000;
 582         runtime->dma_bytes = 0x3000;
 583         memset(runtime->dma_area, 0, runtime->dma_bytes);
 584         chip->capture_substream = substream;
 585         runtime->hw = snd_msnd_capture;
 586         return 0;
 587 }
 588
 589 static int snd_msnd_capture_close(struct snd_pcm_substream *substream)
 590 {
 591         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 592
 593         snd_msnd_disable_irq(chip);
 594         clear_bit(F_AUDIO_READ_INUSE, &chip->flags);
 595         return 0;
 596 }
 597
 598 static int snd_msnd_capture_prepare(struct snd_pcm_substream *substream)
 599 {
 600         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 601         unsigned int pcm_size = snd_pcm_lib_buffer_bytes(substream);
 602         unsigned int pcm_count = snd_pcm_lib_period_bytes(substream);
 603         unsigned int pcm_periods = pcm_size / pcm_count;
 604
 605         snd_msnd_capture_reset_queue(chip, pcm_periods, pcm_count);
 606         chip->captureDMAPos = 0;
 607         return 0;
 608 }
 609
 610 static int snd_msnd_capture_trigger(struct snd_pcm_substream *substream,
 611                                     int cmd)
 612 {
 613         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 614
 615         if (cmd == SNDRV_PCM_TRIGGER_START) {
 616                 chip->last_recbank = -1;
 617                 set_bit(F_READING, &chip->flags);
 618                 if (snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_START) == 0)
 619                         return 0;
 620
 621                 clear_bit(F_READING, &chip->flags);
 622         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 623                 clear_bit(F_READING, &chip->flags);
 624                 snd_msnd_send_dsp_cmd(chip, HDEX_RECORD_STOP);
 625                 return 0;
 626         }
 627         return -EINVAL;
 628 }
 629
 630
 631 static snd_pcm_uframes_t
 632 snd_msnd_capture_pointer(struct snd_pcm_substream *substream)
 633 {
 634         struct snd_pcm_runtime *runtime = substream->runtime;
 635         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 636
 637         return bytes_to_frames(runtime, chip->captureDMAPos);
 638 }
 639
 640
 641 static int snd_msnd_capture_hw_params(struct snd_pcm_substream *substream,
 642                                         struct snd_pcm_hw_params *params)
 643 {
 644         int             i;
 645         struct snd_msnd *chip = snd_pcm_substream_chip(substream);
 646         void            __iomem *pDAQ = chip->mappedbase + DARQ_DATA_BUFF;
 647
 648         chip->capture_sample_size = snd_pcm_format_width(params_format(params));
 649         chip->capture_channels = params_channels(params);
 650         chip->capture_sample_rate = params_rate(params);
 651
 652         for (i = 0; i < 3; ++i, pDAQ += DAQDS__size) {
 653                 writew(chip->capture_sample_size, pDAQ + DAQDS_wSampleSize);
 654                 writew(chip->capture_channels, pDAQ + DAQDS_wChannels);
 655                 writew(chip->capture_sample_rate, pDAQ + DAQDS_wSampleRate);
 656         }
 657         return 0;
 658 }
 659
 660
 661 static const struct snd_pcm_ops snd_msnd_capture_ops = {
 662         .open =         snd_msnd_capture_open,
 663         .close =        snd_msnd_capture_close,
 664         .hw_params =    snd_msnd_capture_hw_params,
 665         .prepare =      snd_msnd_capture_prepare,
 666         .trigger =      snd_msnd_capture_trigger,
 667         .pointer =      snd_msnd_capture_pointer,
 668         .mmap =         snd_pcm_lib_mmap_iomem,
 669 };
 670
 671
 672 int snd_msnd_pcm(struct snd_card *card, int device)
 673 {
 674         struct snd_msnd *chip = card->private_data;
 675         struct snd_pcm  *pcm;
 676         int err;
 677
 678         err = snd_pcm_new(card, "MSNDPINNACLE", device, 1, 1, &pcm);
 679         if (err < 0)
 680                 return err;
 681
 682         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_msnd_playback_ops);
 683         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_msnd_capture_ops);
 684
 685         pcm->private_data = chip;
 686         strcpy(pcm->name, "Hurricane");
 687
 688         return 0;
 689 }
 690 EXPORT_SYMBOL(snd_msnd_pcm);
 691
 692 MODULE_DESCRIPTION("Common routines for Turtle Beach Multisound drivers");
 693 MODULE_LICENSE("GPL");
 694