sound/pci/oxygen/oxygen_lib.c

   1 /*
   2  * C-Media CMI8788 driver - main driver module
   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/delay.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/mutex.h>
  23 #include <linux/pci.h>
  24 #include <sound/ac97_codec.h>
  25 #include <sound/asoundef.h>
  26 #include <sound/core.h>
  27 #include <sound/info.h>
  28 #include <sound/mpu401.h>
  29 #include <sound/pcm.h>
  30 #include "oxygen.h"
  31 #include "cm9780.h"
  32
  33 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  34 MODULE_DESCRIPTION("C-Media CMI8788 helper library");
  35 MODULE_LICENSE("GPL");
  36
  37
  38 static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
  39 {
  40         struct oxygen *chip = dev_id;
  41         unsigned int status, clear, elapsed_streams, i;
  42
  43         status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
  44         if (!status)
  45                 return IRQ_NONE;
  46
  47         spin_lock(&chip->reg_lock);
  48
  49         clear = status & (OXYGEN_CHANNEL_A |
  50                           OXYGEN_CHANNEL_B |
  51                           OXYGEN_CHANNEL_C |
  52                           OXYGEN_CHANNEL_SPDIF |
  53                           OXYGEN_CHANNEL_MULTICH |
  54                           OXYGEN_CHANNEL_AC97 |
  55                           OXYGEN_INT_SPDIF_IN_DETECT |
  56                           OXYGEN_INT_GPIO |
  57                           OXYGEN_INT_AC97);
  58         if (clear) {
  59                 if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
  60                         chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
  61                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  62                                chip->interrupt_mask & ~clear);
  63                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  64                                chip->interrupt_mask);
  65         }
  66
  67         elapsed_streams = status & chip->pcm_running;
  68
  69         spin_unlock(&chip->reg_lock);
  70
  71         for (i = 0; i < PCM_COUNT; ++i)
  72                 if ((elapsed_streams & (1 << i)) && chip->streams[i])
  73                         snd_pcm_period_elapsed(chip->streams[i]);
  74
  75         if (status & OXYGEN_INT_SPDIF_IN_DETECT) {
  76                 spin_lock(&chip->reg_lock);
  77                 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
  78                 if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT |
  79                          OXYGEN_SPDIF_RATE_INT)) {
  80                         /* write the interrupt bit(s) to clear */
  81                         oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
  82                         schedule_work(&chip->spdif_input_bits_work);
  83                 }
  84                 spin_unlock(&chip->reg_lock);
  85         }
  86
  87         if (status & OXYGEN_INT_GPIO)
  88                 ;
  89
  90         if ((status & OXYGEN_INT_MIDI) && chip->midi)
  91                 snd_mpu401_uart_interrupt(0, chip->midi->private_data);
  92
  93         if (status & OXYGEN_INT_AC97)
  94                 wake_up(&chip->ac97_waitqueue);
  95
  96         return IRQ_HANDLED;
  97 }
  98
  99 static void oxygen_spdif_input_bits_changed(struct work_struct *work)
 100 {
 101         struct oxygen *chip = container_of(work, struct oxygen,
 102                                            spdif_input_bits_work);
 103         u32 reg;
 104
 105         /*
 106          * This function gets called when there is new activity on the SPDIF
 107          * input, or when we lose lock on the input signal, or when the rate
 108          * changes.
 109          */
 110         msleep(1);
 111         spin_lock_irq(&chip->reg_lock);
 112         reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
 113         if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
 114                     OXYGEN_SPDIF_LOCK_STATUS))
 115             == OXYGEN_SPDIF_SENSE_STATUS) {
 116                 /*
 117                  * If we detect activity on the SPDIF input but cannot lock to
 118                  * a signal, the clock bit is likely to be wrong.
 119                  */
 120                 reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK;
 121                 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
 122                 spin_unlock_irq(&chip->reg_lock);
 123                 msleep(1);
 124                 spin_lock_irq(&chip->reg_lock);
 125                 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
 126                 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
 127                             OXYGEN_SPDIF_LOCK_STATUS))
 128                     == OXYGEN_SPDIF_SENSE_STATUS) {
 129                         /* nothing detected with either clock; give up */
 130                         if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK)
 131                             == OXYGEN_SPDIF_IN_CLOCK_192) {
 132                                 /*
 133                                  * Reset clock to <= 96 kHz because this is
 134                                  * more likely to be received next time.
 135                                  */
 136                                 reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK;
 137                                 reg |= OXYGEN_SPDIF_IN_CLOCK_96;
 138                                 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
 139                         }
 140                 }
 141         }
 142         spin_unlock_irq(&chip->reg_lock);
 143
 144         if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
 145                 spin_lock_irq(&chip->reg_lock);
 146                 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
 147                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
 148                                chip->interrupt_mask);
 149                 spin_unlock_irq(&chip->reg_lock);
 150
 151                 /*
 152                  * We don't actually know that any channel status bits have
 153                  * changed, but let's send a notification just to be sure.
 154                  */
 155                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
 156                                &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
 157         }
 158 }
 159
 160 #ifdef CONFIG_PROC_FS
 161 static void oxygen_proc_read(struct snd_info_entry *entry,
 162                              struct snd_info_buffer *buffer)
 163 {
 164         struct oxygen *chip = entry->private_data;
 165         int i, j;
 166
 167         snd_iprintf(buffer, "CMI8788\n\n");
 168         for (i = 0; i < 0x100; i += 0x10) {
 169                 snd_iprintf(buffer, "%02x:", i);
 170                 for (j = 0; j < 0x10; ++j)
 171                         snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
 172                 snd_iprintf(buffer, "\n");
 173         }
 174         if (mutex_lock_interruptible(&chip->mutex) < 0)
 175                 return;
 176         if (chip->has_ac97_0) {
 177                 snd_iprintf(buffer, "\nAC97\n");
 178                 for (i = 0; i < 0x80; i += 0x10) {
 179                         snd_iprintf(buffer, "%02x:", i);
 180                         for (j = 0; j < 0x10; j += 2)
 181                                 snd_iprintf(buffer, " %04x",
 182                                             oxygen_read_ac97(chip, 0, i + j));
 183                         snd_iprintf(buffer, "\n");
 184                 }
 185         }
 186         if (chip->has_ac97_1) {
 187                 snd_iprintf(buffer, "\nAC97 2\n");
 188                 for (i = 0; i < 0x80; i += 0x10) {
 189                         snd_iprintf(buffer, "%02x:", i);
 190                         for (j = 0; j < 0x10; j += 2)
 191                                 snd_iprintf(buffer, " %04x",
 192                                             oxygen_read_ac97(chip, 1, i + j));
 193                         snd_iprintf(buffer, "\n");
 194                 }
 195         }
 196         mutex_unlock(&chip->mutex);
 197 }
 198
 199 static void __devinit oxygen_proc_init(struct oxygen *chip)
 200 {
 201         struct snd_info_entry *entry;
 202
 203         if (!snd_card_proc_new(chip->card, "cmi8788", &entry))
 204                 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
 205 }
 206 #else
 207 #define oxygen_proc_init(chip)
 208 #endif
 209
 210 static void __devinit oxygen_init(struct oxygen *chip)
 211 {
 212         unsigned int i;
 213
 214         chip->dac_routing = 1;
 215         for (i = 0; i < 8; ++i)
 216                 chip->dac_volume[i] = 0xff;
 217         chip->spdif_playback_enable = 1;
 218         chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
 219                 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
 220         chip->spdif_pcm_bits = chip->spdif_bits;
 221
 222         if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
 223                 chip->revision = 2;
 224         else
 225                 chip->revision = 1;
 226
 227         if (chip->revision == 1)
 228                 oxygen_set_bits8(chip, OXYGEN_MISC,
 229                                  OXYGEN_MISC_PCI_MEM_W_1_CLOCK);
 230
 231         i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
 232         chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
 233         chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
 234
 235         oxygen_set_bits8(chip, OXYGEN_FUNCTION,
 236                          OXYGEN_FUNCTION_RESET_CODEC |
 237                          chip->model->function_flags);
 238         oxygen_write8_masked(chip, OXYGEN_FUNCTION,
 239                              OXYGEN_FUNCTION_SPI,
 240                              OXYGEN_FUNCTION_2WIRE_SPI_MASK);
 241         oxygen_write8(chip, OXYGEN_DMA_STATUS, 0);
 242         oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0);
 243         oxygen_write8(chip, OXYGEN_PLAY_CHANNELS,
 244                       OXYGEN_PLAY_CHANNELS_2 |
 245                       OXYGEN_DMA_A_BURST_8 |
 246                       OXYGEN_DMA_MULTICH_BURST_8);
 247         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 248         oxygen_write8_masked(chip, OXYGEN_MISC, 0,
 249                              OXYGEN_MISC_WRITE_PCI_SUBID |
 250                              OXYGEN_MISC_REC_C_FROM_SPDIF |
 251                              OXYGEN_MISC_REC_B_FROM_AC97 |
 252                              OXYGEN_MISC_REC_A_FROM_MULTICH);
 253         oxygen_write8(chip, OXYGEN_REC_FORMAT,
 254                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) |
 255                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) |
 256                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT));
 257         oxygen_write8(chip, OXYGEN_PLAY_FORMAT,
 258                       (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) |
 259                       (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT));
 260         oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2);
 261         oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT,
 262                        OXYGEN_RATE_48000 | OXYGEN_I2S_FORMAT_LJUST |
 263                        OXYGEN_I2S_MCLK_128 | OXYGEN_I2S_BITS_16 |
 264                        OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 265         oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
 266                        OXYGEN_RATE_48000 | OXYGEN_I2S_FORMAT_LJUST |
 267                        OXYGEN_I2S_MCLK_128 | OXYGEN_I2S_BITS_16 |
 268                        OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 269         oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
 270                        OXYGEN_RATE_48000 | OXYGEN_I2S_FORMAT_LJUST |
 271                        OXYGEN_I2S_MCLK_128 | OXYGEN_I2S_BITS_16 |
 272                        OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 273         oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
 274                        OXYGEN_RATE_48000 | OXYGEN_I2S_FORMAT_LJUST |
 275                        OXYGEN_I2S_MCLK_128 | OXYGEN_I2S_BITS_16 |
 276                        OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 277         oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
 278                               OXYGEN_SPDIF_SENSE_MASK |
 279                               OXYGEN_SPDIF_LOCK_MASK |
 280                               OXYGEN_SPDIF_RATE_MASK |
 281                               OXYGEN_SPDIF_LOCK_PAR |
 282                               OXYGEN_SPDIF_IN_CLOCK_96,
 283                               OXYGEN_SPDIF_OUT_ENABLE |
 284                               OXYGEN_SPDIF_LOOPBACK |
 285                               OXYGEN_SPDIF_SENSE_MASK |
 286                               OXYGEN_SPDIF_LOCK_MASK |
 287                               OXYGEN_SPDIF_RATE_MASK |
 288                               OXYGEN_SPDIF_SENSE_PAR |
 289                               OXYGEN_SPDIF_LOCK_PAR |
 290                               OXYGEN_SPDIF_IN_CLOCK_MASK);
 291         oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
 292         oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK);
 293         oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0);
 294         oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0);
 295         oxygen_write16(chip, OXYGEN_PLAY_ROUTING,
 296                        OXYGEN_PLAY_MULTICH_I2S_DAC |
 297                        OXYGEN_PLAY_SPDIF_SPDIF |
 298                        (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
 299                        (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
 300                        (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
 301                        (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT));
 302         oxygen_write8(chip, OXYGEN_REC_ROUTING,
 303                       OXYGEN_REC_A_ROUTE_I2S_ADC_1 |
 304                       OXYGEN_REC_B_ROUTE_I2S_ADC_2 |
 305                       OXYGEN_REC_C_ROUTE_SPDIF);
 306         oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0);
 307         oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING,
 308                       (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) |
 309                       (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) |
 310                       (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
 311                       (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
 312
 313         oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
 314                       OXYGEN_AC97_INT_READ_DONE |
 315                       OXYGEN_AC97_INT_WRITE_DONE);
 316         oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
 317         oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
 318         if (!(chip->has_ac97_0 | chip->has_ac97_1))
 319                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 320                                   OXYGEN_AC97_CLOCK_DISABLE);
 321         if (!chip->has_ac97_0) {
 322                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 323                                   OXYGEN_AC97_NO_CODEC_0);
 324         } else {
 325                 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
 326                 msleep(1);
 327                 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP,
 328                                      CM9780_GPIO0IO | CM9780_GPIO1IO);
 329                 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER,
 330                                      CM9780_BSTSEL | CM9780_STRO_MIC |
 331                                      CM9780_MIX2FR | CM9780_PCBSW);
 332                 oxygen_ac97_set_bits(chip, 0, CM9780_JACK,
 333                                      CM9780_RSOE | CM9780_CBOE |
 334                                      CM9780_SSOE | CM9780_FROE |
 335                                      CM9780_MIC2MIC | CM9780_LI2LI);
 336                 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
 337                 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
 338                 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
 339                 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
 340                 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
 341                 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
 342                 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
 343                 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
 344                 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
 345                 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
 346                 /* power down unused ADCs and DACs */
 347                 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
 348                                      AC97_PD_PR0 | AC97_PD_PR1);
 349                 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
 350                                      AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
 351         }
 352         if (chip->has_ac97_1) {
 353                 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG,
 354                                   OXYGEN_AC97_CODEC1_SLOT3 |
 355                                   OXYGEN_AC97_CODEC1_SLOT4);
 356                 oxygen_write_ac97(chip, 1, AC97_RESET, 0);
 357                 msleep(1);
 358                 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000);
 359                 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000);
 360                 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000);
 361                 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808);
 362                 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808);
 363                 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808);
 364                 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808);
 365                 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808);
 366                 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808);
 367                 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000);
 368                 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000);
 369                 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040);
 370         }
 371 }
 372
 373 static void oxygen_card_free(struct snd_card *card)
 374 {
 375         struct oxygen *chip = card->private_data;
 376
 377         spin_lock_irq(&chip->reg_lock);
 378         chip->interrupt_mask = 0;
 379         chip->pcm_running = 0;
 380         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 381         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 382         spin_unlock_irq(&chip->reg_lock);
 383         if (chip->irq >= 0) {
 384                 free_irq(chip->irq, chip);
 385                 synchronize_irq(chip->irq);
 386         }
 387         flush_scheduled_work();
 388         chip->model->cleanup(chip);
 389         mutex_destroy(&chip->mutex);
 390         pci_release_regions(chip->pci);
 391         pci_disable_device(chip->pci);
 392 }
 393
 394 int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
 395                                int midi, const struct oxygen_model *model)
 396 {
 397         struct snd_card *card;
 398         struct oxygen *chip;
 399         int err;
 400
 401         card = snd_card_new(index, id, model->owner,
 402                             sizeof *chip + model->model_data_size);
 403         if (!card)
 404                 return -ENOMEM;
 405
 406         chip = card->private_data;
 407         chip->card = card;
 408         chip->pci = pci;
 409         chip->irq = -1;
 410         chip->model = model;
 411         chip->model_data = chip + 1;
 412         spin_lock_init(&chip->reg_lock);
 413         mutex_init(&chip->mutex);
 414         INIT_WORK(&chip->spdif_input_bits_work,
 415                   oxygen_spdif_input_bits_changed);
 416         init_waitqueue_head(&chip->ac97_waitqueue);
 417
 418         err = pci_enable_device(pci);
 419         if (err < 0)
 420                 goto err_card;
 421
 422         err = pci_request_regions(pci, model->chip);
 423         if (err < 0) {
 424                 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
 425                 goto err_pci_enable;
 426         }
 427
 428         if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
 429             pci_resource_len(pci, 0) < 0x100) {
 430                 snd_printk(KERN_ERR "invalid PCI I/O range\n");
 431                 err = -ENXIO;
 432                 goto err_pci_regions;
 433         }
 434         chip->addr = pci_resource_start(pci, 0);
 435
 436         pci_set_master(pci);
 437         snd_card_set_dev(card, &pci->dev);
 438         card->private_free = oxygen_card_free;
 439
 440         oxygen_init(chip);
 441         model->init(chip);
 442
 443         err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
 444                           model->chip, chip);
 445         if (err < 0) {
 446                 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
 447                 goto err_card;
 448         }
 449         chip->irq = pci->irq;
 450
 451         strcpy(card->driver, model->chip);
 452         strcpy(card->shortname, model->shortname);
 453         sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
 454                 model->longname, chip->revision, chip->addr, chip->irq);
 455         strcpy(card->mixername, model->chip);
 456         snd_component_add(card, model->chip);
 457
 458         err = oxygen_pcm_init(chip);
 459         if (err < 0)
 460                 goto err_card;
 461
 462         err = oxygen_mixer_init(chip);
 463         if (err < 0)
 464                 goto err_card;
 465
 466         oxygen_write8_masked(chip, OXYGEN_MISC,
 467                              midi ? OXYGEN_MISC_MIDI : 0, OXYGEN_MISC_MIDI);
 468         if (midi) {
 469                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
 470                                           chip->addr + OXYGEN_MPU401,
 471                                           MPU401_INFO_INTEGRATED, 0, 0,
 472                                           &chip->midi);
 473                 if (err < 0)
 474                         goto err_card;
 475         }
 476
 477         oxygen_proc_init(chip);
 478
 479         spin_lock_irq(&chip->reg_lock);
 480         chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT | OXYGEN_INT_AC97;
 481         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 482         spin_unlock_irq(&chip->reg_lock);
 483
 484         err = snd_card_register(card);
 485         if (err < 0)
 486                 goto err_card;
 487
 488         pci_set_drvdata(pci, card);
 489         return 0;
 490
 491 err_pci_regions:
 492         pci_release_regions(pci);
 493 err_pci_enable:
 494         pci_disable_device(pci);
 495 err_card:
 496         snd_card_free(card);
 497         return err;
 498 }
 499 EXPORT_SYMBOL(oxygen_pci_probe);
 500
 501 void __devexit oxygen_pci_remove(struct pci_dev *pci)
 502 {
 503         snd_card_free(pci_get_drvdata(pci));
 504         pci_set_drvdata(pci, NULL);
 505 }
 506 EXPORT_SYMBOL(oxygen_pci_remove);