sound/pci/oxygen/oxygen_pcm.c

   1 /*
   2  * C-Media CMI8788 driver - PCM code
   3  *
   4  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   5  *
   6  *
   7  *  This driver is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License, version 2.
   9  *
  10  *  This driver is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this driver; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  */
  19
  20 #include <linux/pci.h>
  21 #include <sound/control.h>
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include "oxygen.h"
  26
  27 static const struct snd_pcm_hardware oxygen_stereo_hardware = {
  28         .info = SNDRV_PCM_INFO_MMAP |
  29                 SNDRV_PCM_INFO_MMAP_VALID |
  30                 SNDRV_PCM_INFO_INTERLEAVED |
  31                 SNDRV_PCM_INFO_PAUSE |
  32                 SNDRV_PCM_INFO_SYNC_START,
  33         .formats = SNDRV_PCM_FMTBIT_S16_LE |
  34                    SNDRV_PCM_FMTBIT_S32_LE,
  35         .rates = SNDRV_PCM_RATE_32000 |
  36                  SNDRV_PCM_RATE_44100 |
  37                  SNDRV_PCM_RATE_48000 |
  38                  SNDRV_PCM_RATE_64000 |
  39                  SNDRV_PCM_RATE_88200 |
  40                  SNDRV_PCM_RATE_96000 |
  41                  SNDRV_PCM_RATE_176400 |
  42                  SNDRV_PCM_RATE_192000,
  43         .rate_min = 32000,
  44         .rate_max = 192000,
  45         .channels_min = 2,
  46         .channels_max = 2,
  47         .buffer_bytes_max = 256 * 1024,
  48         .period_bytes_min = 128,
  49         .period_bytes_max = 128 * 1024,
  50         .periods_min = 2,
  51         .periods_max = 2048,
  52 };
  53 static const struct snd_pcm_hardware oxygen_multichannel_hardware = {
  54         .info = SNDRV_PCM_INFO_MMAP |
  55                 SNDRV_PCM_INFO_MMAP_VALID |
  56                 SNDRV_PCM_INFO_INTERLEAVED |
  57                 SNDRV_PCM_INFO_PAUSE |
  58                 SNDRV_PCM_INFO_SYNC_START,
  59         .formats = SNDRV_PCM_FMTBIT_S16_LE |
  60                    SNDRV_PCM_FMTBIT_S32_LE,
  61         .rates = SNDRV_PCM_RATE_32000 |
  62                  SNDRV_PCM_RATE_44100 |
  63                  SNDRV_PCM_RATE_48000 |
  64                  SNDRV_PCM_RATE_64000 |
  65                  SNDRV_PCM_RATE_88200 |
  66                  SNDRV_PCM_RATE_96000 |
  67                  SNDRV_PCM_RATE_176400 |
  68                  SNDRV_PCM_RATE_192000,
  69         .rate_min = 32000,
  70         .rate_max = 192000,
  71         .channels_min = 2,
  72         .channels_max = 8,
  73         .buffer_bytes_max = 2048 * 1024,
  74         .period_bytes_min = 128,
  75         .period_bytes_max = 256 * 1024,
  76         .periods_min = 2,
  77         .periods_max = 16384,
  78 };
  79 static const struct snd_pcm_hardware oxygen_ac97_hardware = {
  80         .info = SNDRV_PCM_INFO_MMAP |
  81                 SNDRV_PCM_INFO_MMAP_VALID |
  82                 SNDRV_PCM_INFO_INTERLEAVED |
  83                 SNDRV_PCM_INFO_PAUSE |
  84                 SNDRV_PCM_INFO_SYNC_START,
  85         .formats = SNDRV_PCM_FMTBIT_S16_LE,
  86         .rates = SNDRV_PCM_RATE_48000,
  87         .rate_min = 48000,
  88         .rate_max = 48000,
  89         .channels_min = 2,
  90         .channels_max = 2,
  91         .buffer_bytes_max = 256 * 1024,
  92         .period_bytes_min = 128,
  93         .period_bytes_max = 128 * 1024,
  94         .periods_min = 2,
  95         .periods_max = 2048,
  96 };
  97
  98 static const struct snd_pcm_hardware *const oxygen_hardware[PCM_COUNT] = {
  99         [PCM_A] = &oxygen_stereo_hardware,
 100         [PCM_B] = &oxygen_stereo_hardware,
 101         [PCM_C] = &oxygen_stereo_hardware,
 102         [PCM_SPDIF] = &oxygen_stereo_hardware,
 103         [PCM_MULTICH] = &oxygen_multichannel_hardware,
 104         [PCM_AC97] = &oxygen_ac97_hardware,
 105 };
 106
 107 static inline unsigned int
 108 oxygen_substream_channel(struct snd_pcm_substream *substream)
 109 {
 110         return (unsigned int)(uintptr_t)substream->runtime->private_data;
 111 }
 112
 113 static int oxygen_open(struct snd_pcm_substream *substream,
 114                        unsigned int channel)
 115 {
 116         struct oxygen *chip = snd_pcm_substream_chip(substream);
 117         struct snd_pcm_runtime *runtime = substream->runtime;
 118         int err;
 119
 120         runtime->private_data = (void *)(uintptr_t)channel;
 121         runtime->hw = *oxygen_hardware[channel];
 122         switch (channel) {
 123         case PCM_C:
 124                 runtime->hw.rates &= ~(SNDRV_PCM_RATE_32000 |
 125                                        SNDRV_PCM_RATE_64000);
 126                 runtime->hw.rate_min = 44100;
 127                 break;
 128         case PCM_MULTICH:
 129                 runtime->hw.channels_max = chip->model->dac_channels;
 130                 break;
 131         }
 132         if (chip->model->pcm_hardware_filter)
 133                 chip->model->pcm_hardware_filter(channel, &runtime->hw);
 134         err = snd_pcm_hw_constraint_step(runtime, 0,
 135                                          SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 136         if (err < 0)
 137                 return err;
 138         err = snd_pcm_hw_constraint_step(runtime, 0,
 139                                          SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32);
 140         if (err < 0)
 141                 return err;
 142         if (runtime->hw.formats & SNDRV_PCM_FMTBIT_S32_LE) {
 143                 err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
 144                 if (err < 0)
 145                         return err;
 146         }
 147         if (runtime->hw.channels_max > 2) {
 148                 err = snd_pcm_hw_constraint_step(runtime, 0,
 149                                                  SNDRV_PCM_HW_PARAM_CHANNELS,
 150                                                  2);
 151                 if (err < 0)
 152                         return err;
 153         }
 154         snd_pcm_set_sync(substream);
 155         chip->streams[channel] = substream;
 156
 157         mutex_lock(&chip->mutex);
 158         chip->pcm_active |= 1 << channel;
 159         if (channel == PCM_SPDIF) {
 160                 chip->spdif_pcm_bits = chip->spdif_bits;
 161                 chip->controls[CONTROL_SPDIF_PCM]->vd[0].access &=
 162                         ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
 163                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
 164                                SNDRV_CTL_EVENT_MASK_INFO,
 165                                &chip->controls[CONTROL_SPDIF_PCM]->id);
 166         }
 167         mutex_unlock(&chip->mutex);
 168
 169         return 0;
 170 }
 171
 172 static int oxygen_rec_a_open(struct snd_pcm_substream *substream)
 173 {
 174         return oxygen_open(substream, PCM_A);
 175 }
 176
 177 static int oxygen_rec_b_open(struct snd_pcm_substream *substream)
 178 {
 179         return oxygen_open(substream, PCM_B);
 180 }
 181
 182 static int oxygen_rec_c_open(struct snd_pcm_substream *substream)
 183 {
 184         return oxygen_open(substream, PCM_C);
 185 }
 186
 187 static int oxygen_spdif_open(struct snd_pcm_substream *substream)
 188 {
 189         return oxygen_open(substream, PCM_SPDIF);
 190 }
 191
 192 static int oxygen_multich_open(struct snd_pcm_substream *substream)
 193 {
 194         return oxygen_open(substream, PCM_MULTICH);
 195 }
 196
 197 static int oxygen_ac97_open(struct snd_pcm_substream *substream)
 198 {
 199         return oxygen_open(substream, PCM_AC97);
 200 }
 201
 202 static int oxygen_close(struct snd_pcm_substream *substream)
 203 {
 204         struct oxygen *chip = snd_pcm_substream_chip(substream);
 205         unsigned int channel = oxygen_substream_channel(substream);
 206
 207         mutex_lock(&chip->mutex);
 208         chip->pcm_active &= ~(1 << channel);
 209         if (channel == PCM_SPDIF) {
 210                 chip->controls[CONTROL_SPDIF_PCM]->vd[0].access |=
 211                         SNDRV_CTL_ELEM_ACCESS_INACTIVE;
 212                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
 213                                SNDRV_CTL_EVENT_MASK_INFO,
 214                                &chip->controls[CONTROL_SPDIF_PCM]->id);
 215         }
 216         if (channel == PCM_SPDIF || channel == PCM_MULTICH)
 217                 oxygen_update_spdif_source(chip);
 218         mutex_unlock(&chip->mutex);
 219
 220         chip->streams[channel] = NULL;
 221         return 0;
 222 }
 223
 224 static unsigned int oxygen_format(struct snd_pcm_hw_params *hw_params)
 225 {
 226         if (params_format(hw_params) == SNDRV_PCM_FORMAT_S32_LE)
 227                 return OXYGEN_FORMAT_24;
 228         else
 229                 return OXYGEN_FORMAT_16;
 230 }
 231
 232 static unsigned int oxygen_rate(struct snd_pcm_hw_params *hw_params)
 233 {
 234         switch (params_rate(hw_params)) {
 235         case 32000:
 236                 return OXYGEN_RATE_32000;
 237         case 44100:
 238                 return OXYGEN_RATE_44100;
 239         default: /* 48000 */
 240                 return OXYGEN_RATE_48000;
 241         case 64000:
 242                 return OXYGEN_RATE_64000;
 243         case 88200:
 244                 return OXYGEN_RATE_88200;
 245         case 96000:
 246                 return OXYGEN_RATE_96000;
 247         case 176400:
 248                 return OXYGEN_RATE_176400;
 249         case 192000:
 250                 return OXYGEN_RATE_192000;
 251         }
 252 }
 253
 254 static unsigned int oxygen_i2s_mclk(struct snd_pcm_hw_params *hw_params)
 255 {
 256         if (params_rate(hw_params) <= 96000)
 257                 return OXYGEN_I2S_MCLK_256;
 258         else
 259                 return OXYGEN_I2S_MCLK_128;
 260 }
 261
 262 static unsigned int oxygen_i2s_bits(struct snd_pcm_hw_params *hw_params)
 263 {
 264         if (params_format(hw_params) == SNDRV_PCM_FORMAT_S32_LE)
 265                 return OXYGEN_I2S_BITS_24;
 266         else
 267                 return OXYGEN_I2S_BITS_16;
 268 }
 269
 270 static unsigned int oxygen_play_channels(struct snd_pcm_hw_params *hw_params)
 271 {
 272         switch (params_channels(hw_params)) {
 273         default: /* 2 */
 274                 return OXYGEN_PLAY_CHANNELS_2;
 275         case 4:
 276                 return OXYGEN_PLAY_CHANNELS_4;
 277         case 6:
 278                 return OXYGEN_PLAY_CHANNELS_6;
 279         case 8:
 280                 return OXYGEN_PLAY_CHANNELS_8;
 281         }
 282 }
 283
 284 static const unsigned int channel_base_registers[PCM_COUNT] = {
 285         [PCM_A] = OXYGEN_DMA_A_ADDRESS,
 286         [PCM_B] = OXYGEN_DMA_B_ADDRESS,
 287         [PCM_C] = OXYGEN_DMA_C_ADDRESS,
 288         [PCM_SPDIF] = OXYGEN_DMA_SPDIF_ADDRESS,
 289         [PCM_MULTICH] = OXYGEN_DMA_MULTICH_ADDRESS,
 290         [PCM_AC97] = OXYGEN_DMA_AC97_ADDRESS,
 291 };
 292
 293 static int oxygen_hw_params(struct snd_pcm_substream *substream,
 294                             struct snd_pcm_hw_params *hw_params)
 295 {
 296         struct oxygen *chip = snd_pcm_substream_chip(substream);
 297         unsigned int channel = oxygen_substream_channel(substream);
 298         int err;
 299
 300         err = snd_pcm_lib_malloc_pages(substream,
 301                                        params_buffer_bytes(hw_params));
 302         if (err < 0)
 303                 return err;
 304
 305         oxygen_write32(chip, channel_base_registers[channel],
 306                        (u32)substream->runtime->dma_addr);
 307         if (channel == PCM_MULTICH) {
 308                 oxygen_write32(chip, OXYGEN_DMA_MULTICH_COUNT,
 309                                params_buffer_bytes(hw_params) / 4 - 1);
 310                 oxygen_write32(chip, OXYGEN_DMA_MULTICH_TCOUNT,
 311                                params_period_bytes(hw_params) / 4 - 1);
 312         } else {
 313                 oxygen_write16(chip, channel_base_registers[channel] + 4,
 314                                params_buffer_bytes(hw_params) / 4 - 1);
 315                 oxygen_write16(chip, channel_base_registers[channel] + 6,
 316                                params_period_bytes(hw_params) / 4 - 1);
 317         }
 318         return 0;
 319 }
 320
 321 static int oxygen_rec_a_hw_params(struct snd_pcm_substream *substream,
 322                                   struct snd_pcm_hw_params *hw_params)
 323 {
 324         struct oxygen *chip = snd_pcm_substream_chip(substream);
 325         int err;
 326
 327         err = oxygen_hw_params(substream, hw_params);
 328         if (err < 0)
 329                 return err;
 330
 331         spin_lock_irq(&chip->reg_lock);
 332         oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
 333                              oxygen_format(hw_params) << OXYGEN_REC_FORMAT_A_SHIFT,
 334                              OXYGEN_REC_FORMAT_A_MASK);
 335         oxygen_write16_masked(chip, OXYGEN_I2S_A_FORMAT,
 336                               oxygen_rate(hw_params) |
 337                               oxygen_i2s_mclk(hw_params) |
 338                               chip->model->adc_i2s_format |
 339                               oxygen_i2s_bits(hw_params),
 340                               OXYGEN_I2S_RATE_MASK |
 341                               OXYGEN_I2S_FORMAT_MASK |
 342                               OXYGEN_I2S_MCLK_MASK |
 343                               OXYGEN_I2S_BITS_MASK);
 344         spin_unlock_irq(&chip->reg_lock);
 345
 346         mutex_lock(&chip->mutex);
 347         chip->model->set_adc_params(chip, hw_params);
 348         mutex_unlock(&chip->mutex);
 349         return 0;
 350 }
 351
 352 static int oxygen_rec_b_hw_params(struct snd_pcm_substream *substream,
 353                                   struct snd_pcm_hw_params *hw_params)
 354 {
 355         struct oxygen *chip = snd_pcm_substream_chip(substream);
 356         int err;
 357
 358         err = oxygen_hw_params(substream, hw_params);
 359         if (err < 0)
 360                 return err;
 361
 362         spin_lock_irq(&chip->reg_lock);
 363         oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
 364                              oxygen_format(hw_params) << OXYGEN_REC_FORMAT_B_SHIFT,
 365                              OXYGEN_REC_FORMAT_B_MASK);
 366         oxygen_write16_masked(chip, OXYGEN_I2S_B_FORMAT,
 367                               oxygen_rate(hw_params) |
 368                               oxygen_i2s_mclk(hw_params) |
 369                               chip->model->adc_i2s_format |
 370                               oxygen_i2s_bits(hw_params),
 371                               OXYGEN_I2S_RATE_MASK |
 372                               OXYGEN_I2S_FORMAT_MASK |
 373                               OXYGEN_I2S_MCLK_MASK |
 374                               OXYGEN_I2S_BITS_MASK);
 375         spin_unlock_irq(&chip->reg_lock);
 376
 377         mutex_lock(&chip->mutex);
 378         chip->model->set_adc_params(chip, hw_params);
 379         mutex_unlock(&chip->mutex);
 380         return 0;
 381 }
 382
 383 static int oxygen_rec_c_hw_params(struct snd_pcm_substream *substream,
 384                                   struct snd_pcm_hw_params *hw_params)
 385 {
 386         struct oxygen *chip = snd_pcm_substream_chip(substream);
 387         int err;
 388
 389         err = oxygen_hw_params(substream, hw_params);
 390         if (err < 0)
 391                 return err;
 392
 393         spin_lock_irq(&chip->reg_lock);
 394         oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
 395                              oxygen_format(hw_params) << OXYGEN_REC_FORMAT_C_SHIFT,
 396                              OXYGEN_REC_FORMAT_C_MASK);
 397         spin_unlock_irq(&chip->reg_lock);
 398         return 0;
 399 }
 400
 401 static int oxygen_spdif_hw_params(struct snd_pcm_substream *substream,
 402                                   struct snd_pcm_hw_params *hw_params)
 403 {
 404         struct oxygen *chip = snd_pcm_substream_chip(substream);
 405         int err;
 406
 407         err = oxygen_hw_params(substream, hw_params);
 408         if (err < 0)
 409                 return err;
 410
 411         spin_lock_irq(&chip->reg_lock);
 412         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 413                             OXYGEN_SPDIF_OUT_ENABLE);
 414         oxygen_write8_masked(chip, OXYGEN_PLAY_FORMAT,
 415                              oxygen_format(hw_params) << OXYGEN_SPDIF_FORMAT_SHIFT,
 416                              OXYGEN_SPDIF_FORMAT_MASK);
 417         oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
 418                               oxygen_rate(hw_params) << OXYGEN_SPDIF_OUT_RATE_SHIFT,
 419                               OXYGEN_SPDIF_OUT_RATE_MASK);
 420         oxygen_update_spdif_source(chip);
 421         spin_unlock_irq(&chip->reg_lock);
 422         return 0;
 423 }
 424
 425 static int oxygen_multich_hw_params(struct snd_pcm_substream *substream,
 426                                     struct snd_pcm_hw_params *hw_params)
 427 {
 428         struct oxygen *chip = snd_pcm_substream_chip(substream);
 429         int err;
 430
 431         err = oxygen_hw_params(substream, hw_params);
 432         if (err < 0)
 433                 return err;
 434
 435         spin_lock_irq(&chip->reg_lock);
 436         oxygen_write8_masked(chip, OXYGEN_PLAY_CHANNELS,
 437                              oxygen_play_channels(hw_params),
 438                              OXYGEN_PLAY_CHANNELS_MASK);
 439         oxygen_write8_masked(chip, OXYGEN_PLAY_FORMAT,
 440                              oxygen_format(hw_params) << OXYGEN_MULTICH_FORMAT_SHIFT,
 441                              OXYGEN_MULTICH_FORMAT_MASK);
 442         oxygen_write16_masked(chip, OXYGEN_I2S_MULTICH_FORMAT,
 443                               oxygen_rate(hw_params) |
 444                               chip->model->dac_i2s_format |
 445                               oxygen_i2s_bits(hw_params),
 446                               OXYGEN_I2S_RATE_MASK |
 447                               OXYGEN_I2S_FORMAT_MASK |
 448                               OXYGEN_I2S_BITS_MASK);
 449         oxygen_update_dac_routing(chip);
 450         oxygen_update_spdif_source(chip);
 451         spin_unlock_irq(&chip->reg_lock);
 452
 453         mutex_lock(&chip->mutex);
 454         chip->model->set_dac_params(chip, hw_params);
 455         mutex_unlock(&chip->mutex);
 456         return 0;
 457 }
 458
 459 static int oxygen_hw_free(struct snd_pcm_substream *substream)
 460 {
 461         struct oxygen *chip = snd_pcm_substream_chip(substream);
 462         unsigned int channel = oxygen_substream_channel(substream);
 463
 464         spin_lock_irq(&chip->reg_lock);
 465         chip->interrupt_mask &= ~(1 << channel);
 466         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 467         spin_unlock_irq(&chip->reg_lock);
 468
 469         return snd_pcm_lib_free_pages(substream);
 470 }
 471
 472 static int oxygen_spdif_hw_free(struct snd_pcm_substream *substream)
 473 {
 474         struct oxygen *chip = snd_pcm_substream_chip(substream);
 475
 476         spin_lock_irq(&chip->reg_lock);
 477         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 478                             OXYGEN_SPDIF_OUT_ENABLE);
 479         spin_unlock_irq(&chip->reg_lock);
 480         return oxygen_hw_free(substream);
 481 }
 482
 483 static int oxygen_prepare(struct snd_pcm_substream *substream)
 484 {
 485         struct oxygen *chip = snd_pcm_substream_chip(substream);
 486         unsigned int channel = oxygen_substream_channel(substream);
 487         unsigned int channel_mask = 1 << channel;
 488
 489         spin_lock_irq(&chip->reg_lock);
 490         oxygen_set_bits8(chip, OXYGEN_DMA_FLUSH, channel_mask);
 491         oxygen_clear_bits8(chip, OXYGEN_DMA_FLUSH, channel_mask);
 492
 493         chip->interrupt_mask |= channel_mask;
 494         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 495         spin_unlock_irq(&chip->reg_lock);
 496         return 0;
 497 }
 498
 499 static int oxygen_trigger(struct snd_pcm_substream *substream, int cmd)
 500 {
 501         struct oxygen *chip = snd_pcm_substream_chip(substream);
 502         struct snd_pcm_substream *s;
 503         unsigned int mask = 0;
 504         int pausing;
 505
 506         switch (cmd) {
 507         case SNDRV_PCM_TRIGGER_STOP:
 508         case SNDRV_PCM_TRIGGER_START:
 509                 pausing = 0;
 510                 break;
 511         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 512         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 513                 pausing = 1;
 514                 break;
 515         default:
 516                 return -EINVAL;
 517         }
 518
 519         snd_pcm_group_for_each_entry(s, substream) {
 520                 if (snd_pcm_substream_chip(s) == chip) {
 521                         mask |= 1 << oxygen_substream_channel(s);
 522                         snd_pcm_trigger_done(s, substream);
 523                 }
 524         }
 525
 526         spin_lock(&chip->reg_lock);
 527         if (!pausing) {
 528                 if (cmd == SNDRV_PCM_TRIGGER_START)
 529                         chip->pcm_running |= mask;
 530                 else
 531                         chip->pcm_running &= ~mask;
 532                 oxygen_write8(chip, OXYGEN_DMA_STATUS, chip->pcm_running);
 533         } else {
 534                 if (cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH)
 535                         oxygen_set_bits8(chip, OXYGEN_DMA_PAUSE, mask);
 536                 else
 537                         oxygen_clear_bits8(chip, OXYGEN_DMA_PAUSE, mask);
 538         }
 539         spin_unlock(&chip->reg_lock);
 540         return 0;
 541 }
 542
 543 static snd_pcm_uframes_t oxygen_pointer(struct snd_pcm_substream *substream)
 544 {
 545         struct oxygen *chip = snd_pcm_substream_chip(substream);
 546         struct snd_pcm_runtime *runtime = substream->runtime;
 547         unsigned int channel = oxygen_substream_channel(substream);
 548         u32 curr_addr;
 549
 550         /* no spinlock, this read should be atomic */
 551         curr_addr = oxygen_read32(chip, channel_base_registers[channel]);
 552         return bytes_to_frames(runtime, curr_addr - (u32)runtime->dma_addr);
 553 }
 554
 555 static struct snd_pcm_ops oxygen_rec_a_ops = {
 556         .open      = oxygen_rec_a_open,
 557         .close     = oxygen_close,
 558         .ioctl     = snd_pcm_lib_ioctl,
 559         .hw_params = oxygen_rec_a_hw_params,
 560         .hw_free   = oxygen_hw_free,
 561         .prepare   = oxygen_prepare,
 562         .trigger   = oxygen_trigger,
 563         .pointer   = oxygen_pointer,
 564 };
 565
 566 static struct snd_pcm_ops oxygen_rec_b_ops = {
 567         .open      = oxygen_rec_b_open,
 568         .close     = oxygen_close,
 569         .ioctl     = snd_pcm_lib_ioctl,
 570         .hw_params = oxygen_rec_b_hw_params,
 571         .hw_free   = oxygen_hw_free,
 572         .prepare   = oxygen_prepare,
 573         .trigger   = oxygen_trigger,
 574         .pointer   = oxygen_pointer,
 575 };
 576
 577 static struct snd_pcm_ops oxygen_rec_c_ops = {
 578         .open      = oxygen_rec_c_open,
 579         .close     = oxygen_close,
 580         .ioctl     = snd_pcm_lib_ioctl,
 581         .hw_params = oxygen_rec_c_hw_params,
 582         .hw_free   = oxygen_hw_free,
 583         .prepare   = oxygen_prepare,
 584         .trigger   = oxygen_trigger,
 585         .pointer   = oxygen_pointer,
 586 };
 587
 588 static struct snd_pcm_ops oxygen_spdif_ops = {
 589         .open      = oxygen_spdif_open,
 590         .close     = oxygen_close,
 591         .ioctl     = snd_pcm_lib_ioctl,
 592         .hw_params = oxygen_spdif_hw_params,
 593         .hw_free   = oxygen_spdif_hw_free,
 594         .prepare   = oxygen_prepare,
 595         .trigger   = oxygen_trigger,
 596         .pointer   = oxygen_pointer,
 597 };
 598
 599 static struct snd_pcm_ops oxygen_multich_ops = {
 600         .open      = oxygen_multich_open,
 601         .close     = oxygen_close,
 602         .ioctl     = snd_pcm_lib_ioctl,
 603         .hw_params = oxygen_multich_hw_params,
 604         .hw_free   = oxygen_hw_free,
 605         .prepare   = oxygen_prepare,
 606         .trigger   = oxygen_trigger,
 607         .pointer   = oxygen_pointer,
 608 };
 609
 610 static struct snd_pcm_ops oxygen_ac97_ops = {
 611         .open      = oxygen_ac97_open,
 612         .close     = oxygen_close,
 613         .ioctl     = snd_pcm_lib_ioctl,
 614         .hw_params = oxygen_hw_params,
 615         .hw_free   = oxygen_hw_free,
 616         .prepare   = oxygen_prepare,
 617         .trigger   = oxygen_trigger,
 618         .pointer   = oxygen_pointer,
 619 };
 620
 621 static void oxygen_pcm_free(struct snd_pcm *pcm)
 622 {
 623         snd_pcm_lib_preallocate_free_for_all(pcm);
 624 }
 625
 626 int __devinit oxygen_pcm_init(struct oxygen *chip)
 627 {
 628         struct snd_pcm *pcm;
 629         int outs, ins;
 630         int err;
 631
 632         outs = 1; /* OXYGEN_CHANNEL_MULTICH is always used */
 633         ins = !!(chip->model->used_channels & (OXYGEN_CHANNEL_A |
 634                                                OXYGEN_CHANNEL_B));
 635         err = snd_pcm_new(chip->card, "Analog", 0, outs, ins, &pcm);
 636         if (err < 0)
 637                 return err;
 638         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &oxygen_multich_ops);
 639         if (chip->model->used_channels & OXYGEN_CHANNEL_A)
 640                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 641                                 &oxygen_rec_a_ops);
 642         else if (chip->model->used_channels & OXYGEN_CHANNEL_B)
 643                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 644                                 &oxygen_rec_b_ops);
 645         pcm->private_data = chip;
 646         pcm->private_free = oxygen_pcm_free;
 647         strcpy(pcm->name, "Analog");
 648         snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
 649                                       SNDRV_DMA_TYPE_DEV,
 650                                       snd_dma_pci_data(chip->pci),
 651                                       512 * 1024, 2048 * 1024);
 652         if (ins)
 653                 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
 654                                               SNDRV_DMA_TYPE_DEV,
 655                                               snd_dma_pci_data(chip->pci),
 656                                               128 * 1024, 256 * 1024);
 657
 658         outs = !!(chip->model->used_channels & OXYGEN_CHANNEL_SPDIF);
 659         ins = !!(chip->model->used_channels & OXYGEN_CHANNEL_C);
 660         if (outs | ins) {
 661                 err = snd_pcm_new(chip->card, "Digital", 1, outs, ins, &pcm);
 662                 if (err < 0)
 663                         return err;
 664                 if (outs)
 665                         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 666                                         &oxygen_spdif_ops);
 667                 if (ins)
 668                         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 669                                         &oxygen_rec_c_ops);
 670                 pcm->private_data = chip;
 671                 pcm->private_free = oxygen_pcm_free;
 672                 strcpy(pcm->name, "Digital");
 673                 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 674                                                       snd_dma_pci_data(chip->pci),
 675                                                       128 * 1024, 256 * 1024);
 676         }
 677
 678         outs = chip->has_ac97_1 &&
 679                 (chip->model->used_channels & OXYGEN_CHANNEL_AC97);
 680         ins = (chip->model->used_channels & (OXYGEN_CHANNEL_A |
 681                                              OXYGEN_CHANNEL_B))
 682                 == (OXYGEN_CHANNEL_A | OXYGEN_CHANNEL_B);
 683         if (outs | ins) {
 684                 err = snd_pcm_new(chip->card, ins ? "Analog2" : "AC97",
 685                                   2, outs, ins, &pcm);
 686                 if (err < 0)
 687                         return err;
 688                 if (outs)
 689                         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 690                                         &oxygen_ac97_ops);
 691                 if (ins)
 692                         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 693                                         &oxygen_rec_b_ops);
 694                 pcm->private_data = chip;
 695                 pcm->private_free = oxygen_pcm_free;
 696                 strcpy(pcm->name, ins ? "Analog 2" : "Front Panel");
 697                 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 698                                                       snd_dma_pci_data(chip->pci),
 699                                                       128 * 1024, 256 * 1024);
 700         }
 701         return 0;
 702 }