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                 schedule_work(&chip->gpio_work);
  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 static void oxygen_gpio_changed(struct work_struct *work)
 161 {
 162         struct oxygen *chip = container_of(work, struct oxygen, gpio_work);
 163
 164         if (chip->model->gpio_changed)
 165                 chip->model->gpio_changed(chip);
 166 }
 167
 168 #ifdef CONFIG_PROC_FS
 169 static void oxygen_proc_read(struct snd_info_entry *entry,
 170                              struct snd_info_buffer *buffer)
 171 {
 172         struct oxygen *chip = entry->private_data;
 173         int i, j;
 174
 175         snd_iprintf(buffer, "CMI8788\n\n");
 176         for (i = 0; i < 0x100; i += 0x10) {
 177                 snd_iprintf(buffer, "%02x:", i);
 178                 for (j = 0; j < 0x10; ++j)
 179                         snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
 180                 snd_iprintf(buffer, "\n");
 181         }
 182         if (mutex_lock_interruptible(&chip->mutex) < 0)
 183                 return;
 184         if (chip->has_ac97_0) {
 185                 snd_iprintf(buffer, "\nAC97\n");
 186                 for (i = 0; i < 0x80; i += 0x10) {
 187                         snd_iprintf(buffer, "%02x:", i);
 188                         for (j = 0; j < 0x10; j += 2)
 189                                 snd_iprintf(buffer, " %04x",
 190                                             oxygen_read_ac97(chip, 0, i + j));
 191                         snd_iprintf(buffer, "\n");
 192                 }
 193         }
 194         if (chip->has_ac97_1) {
 195                 snd_iprintf(buffer, "\nAC97 2\n");
 196                 for (i = 0; i < 0x80; i += 0x10) {
 197                         snd_iprintf(buffer, "%02x:", i);
 198                         for (j = 0; j < 0x10; j += 2)
 199                                 snd_iprintf(buffer, " %04x",
 200                                             oxygen_read_ac97(chip, 1, i + j));
 201                         snd_iprintf(buffer, "\n");
 202                 }
 203         }
 204         mutex_unlock(&chip->mutex);
 205 }
 206
 207 static void oxygen_proc_init(struct oxygen *chip)
 208 {
 209         struct snd_info_entry *entry;
 210
 211         if (!snd_card_proc_new(chip->card, "cmi8788", &entry))
 212                 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
 213 }
 214 #else
 215 #define oxygen_proc_init(chip)
 216 #endif
 217
 218 static void oxygen_init(struct oxygen *chip)
 219 {
 220         unsigned int i;
 221
 222         chip->dac_routing = 1;
 223         for (i = 0; i < 8; ++i)
 224                 chip->dac_volume[i] = 0xff;
 225         chip->spdif_playback_enable = 1;
 226         chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
 227                 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
 228         chip->spdif_pcm_bits = chip->spdif_bits;
 229
 230         if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
 231                 chip->revision = 2;
 232         else
 233                 chip->revision = 1;
 234
 235         if (chip->revision == 1)
 236                 oxygen_set_bits8(chip, OXYGEN_MISC,
 237                                  OXYGEN_MISC_PCI_MEM_W_1_CLOCK);
 238
 239         i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
 240         chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
 241         chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
 242
 243         oxygen_write8_masked(chip, OXYGEN_FUNCTION,
 244                              OXYGEN_FUNCTION_RESET_CODEC |
 245                              chip->model->function_flags,
 246                              OXYGEN_FUNCTION_RESET_CODEC |
 247                              OXYGEN_FUNCTION_2WIRE_SPI_MASK |
 248                              OXYGEN_FUNCTION_ENABLE_SPI_4_5);
 249         oxygen_write8(chip, OXYGEN_DMA_STATUS, 0);
 250         oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0);
 251         oxygen_write8(chip, OXYGEN_PLAY_CHANNELS,
 252                       OXYGEN_PLAY_CHANNELS_2 |
 253                       OXYGEN_DMA_A_BURST_8 |
 254                       OXYGEN_DMA_MULTICH_BURST_8);
 255         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 256         oxygen_write8_masked(chip, OXYGEN_MISC,
 257                              chip->model->misc_flags,
 258                              OXYGEN_MISC_WRITE_PCI_SUBID |
 259                              OXYGEN_MISC_REC_C_FROM_SPDIF |
 260                              OXYGEN_MISC_REC_B_FROM_AC97 |
 261                              OXYGEN_MISC_REC_A_FROM_MULTICH |
 262                              OXYGEN_MISC_MIDI);
 263         oxygen_write8(chip, OXYGEN_REC_FORMAT,
 264                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) |
 265                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) |
 266                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT));
 267         oxygen_write8(chip, OXYGEN_PLAY_FORMAT,
 268                       (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) |
 269                       (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT));
 270         oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2);
 271         oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT,
 272                        OXYGEN_RATE_48000 | chip->model->dac_i2s_format |
 273                        OXYGEN_I2S_MCLK_256 | OXYGEN_I2S_BITS_16 |
 274                        OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 275         if (chip->model->pcm_dev_cfg & CAPTURE_0_FROM_I2S_1)
 276                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
 277                                OXYGEN_RATE_48000 | chip->model->adc_i2s_format |
 278                                OXYGEN_I2S_MCLK_256 | OXYGEN_I2S_BITS_16 |
 279                                OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 280         else
 281                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
 282                                OXYGEN_I2S_MASTER | OXYGEN_I2S_MUTE_MCLK);
 283         if (chip->model->pcm_dev_cfg & (CAPTURE_0_FROM_I2S_2 |
 284                                         CAPTURE_2_FROM_I2S_2))
 285                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
 286                                OXYGEN_RATE_48000 | chip->model->adc_i2s_format |
 287                                OXYGEN_I2S_MCLK_256 | OXYGEN_I2S_BITS_16 |
 288                                OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 289         else
 290                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
 291                                OXYGEN_I2S_MASTER | OXYGEN_I2S_MUTE_MCLK);
 292         oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
 293                        OXYGEN_I2S_MASTER | OXYGEN_I2S_MUTE_MCLK);
 294         oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
 295                               OXYGEN_SPDIF_SENSE_MASK |
 296                               OXYGEN_SPDIF_LOCK_MASK |
 297                               OXYGEN_SPDIF_RATE_MASK |
 298                               OXYGEN_SPDIF_LOCK_PAR |
 299                               OXYGEN_SPDIF_IN_CLOCK_96,
 300                               OXYGEN_SPDIF_OUT_ENABLE |
 301                               OXYGEN_SPDIF_LOOPBACK |
 302                               OXYGEN_SPDIF_SENSE_MASK |
 303                               OXYGEN_SPDIF_LOCK_MASK |
 304                               OXYGEN_SPDIF_RATE_MASK |
 305                               OXYGEN_SPDIF_SENSE_PAR |
 306                               OXYGEN_SPDIF_LOCK_PAR |
 307                               OXYGEN_SPDIF_IN_CLOCK_MASK);
 308         oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
 309         oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK);
 310         oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0);
 311         oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0);
 312         oxygen_write16(chip, OXYGEN_PLAY_ROUTING,
 313                        OXYGEN_PLAY_MULTICH_I2S_DAC |
 314                        OXYGEN_PLAY_SPDIF_SPDIF |
 315                        (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
 316                        (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
 317                        (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
 318                        (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT));
 319         oxygen_write8(chip, OXYGEN_REC_ROUTING,
 320                       OXYGEN_REC_A_ROUTE_I2S_ADC_1 |
 321                       OXYGEN_REC_B_ROUTE_I2S_ADC_2 |
 322                       OXYGEN_REC_C_ROUTE_SPDIF);
 323         oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0);
 324         oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING,
 325                       (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) |
 326                       (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) |
 327                       (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
 328                       (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
 329
 330         oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
 331                       OXYGEN_AC97_INT_READ_DONE |
 332                       OXYGEN_AC97_INT_WRITE_DONE);
 333         oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
 334         oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
 335         if (!(chip->has_ac97_0 | chip->has_ac97_1))
 336                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 337                                   OXYGEN_AC97_CLOCK_DISABLE);
 338         if (!chip->has_ac97_0) {
 339                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 340                                   OXYGEN_AC97_NO_CODEC_0);
 341         } else {
 342                 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
 343                 msleep(1);
 344                 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP,
 345                                      CM9780_GPIO0IO | CM9780_GPIO1IO);
 346                 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER,
 347                                      CM9780_BSTSEL | CM9780_STRO_MIC |
 348                                      CM9780_MIX2FR | CM9780_PCBSW);
 349                 oxygen_ac97_set_bits(chip, 0, CM9780_JACK,
 350                                      CM9780_RSOE | CM9780_CBOE |
 351                                      CM9780_SSOE | CM9780_FROE |
 352                                      CM9780_MIC2MIC | CM9780_LI2LI);
 353                 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
 354                 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
 355                 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
 356                 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
 357                 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
 358                 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
 359                 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
 360                 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
 361                 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
 362                 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
 363                 /* power down unused ADCs and DACs */
 364                 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
 365                                      AC97_PD_PR0 | AC97_PD_PR1);
 366                 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
 367                                      AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
 368         }
 369         if (chip->has_ac97_1) {
 370                 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG,
 371                                   OXYGEN_AC97_CODEC1_SLOT3 |
 372                                   OXYGEN_AC97_CODEC1_SLOT4);
 373                 oxygen_write_ac97(chip, 1, AC97_RESET, 0);
 374                 msleep(1);
 375                 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000);
 376                 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000);
 377                 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000);
 378                 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808);
 379                 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808);
 380                 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808);
 381                 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808);
 382                 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808);
 383                 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808);
 384                 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000);
 385                 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000);
 386                 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040);
 387         }
 388 }
 389
 390 static void oxygen_card_free(struct snd_card *card)
 391 {
 392         struct oxygen *chip = card->private_data;
 393
 394         spin_lock_irq(&chip->reg_lock);
 395         chip->interrupt_mask = 0;
 396         chip->pcm_running = 0;
 397         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 398         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 399         spin_unlock_irq(&chip->reg_lock);
 400         if (chip->irq >= 0) {
 401                 free_irq(chip->irq, chip);
 402                 synchronize_irq(chip->irq);
 403         }
 404         flush_scheduled_work();
 405         chip->model->cleanup(chip);
 406         mutex_destroy(&chip->mutex);
 407         pci_release_regions(chip->pci);
 408         pci_disable_device(chip->pci);
 409 }
 410
 411 int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
 412                      const struct oxygen_model *model)
 413 {
 414         struct snd_card *card;
 415         struct oxygen *chip;
 416         int err;
 417
 418         card = snd_card_new(index, id, model->owner,
 419                             sizeof *chip + model->model_data_size);
 420         if (!card)
 421                 return -ENOMEM;
 422
 423         chip = card->private_data;
 424         chip->card = card;
 425         chip->pci = pci;
 426         chip->irq = -1;
 427         chip->model = model;
 428         chip->model_data = chip + 1;
 429         spin_lock_init(&chip->reg_lock);
 430         mutex_init(&chip->mutex);
 431         INIT_WORK(&chip->spdif_input_bits_work,
 432                   oxygen_spdif_input_bits_changed);
 433         INIT_WORK(&chip->gpio_work, oxygen_gpio_changed);
 434         init_waitqueue_head(&chip->ac97_waitqueue);
 435
 436         err = pci_enable_device(pci);
 437         if (err < 0)
 438                 goto err_card;
 439
 440         err = pci_request_regions(pci, model->chip);
 441         if (err < 0) {
 442                 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
 443                 goto err_pci_enable;
 444         }
 445
 446         if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
 447             pci_resource_len(pci, 0) < 0x100) {
 448                 snd_printk(KERN_ERR "invalid PCI I/O range\n");
 449                 err = -ENXIO;
 450                 goto err_pci_regions;
 451         }
 452         chip->addr = pci_resource_start(pci, 0);
 453
 454         pci_set_master(pci);
 455         snd_card_set_dev(card, &pci->dev);
 456         card->private_free = oxygen_card_free;
 457
 458         oxygen_init(chip);
 459         model->init(chip);
 460
 461         err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
 462                           model->chip, chip);
 463         if (err < 0) {
 464                 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
 465                 goto err_card;
 466         }
 467         chip->irq = pci->irq;
 468
 469         strcpy(card->driver, model->chip);
 470         strcpy(card->shortname, model->shortname);
 471         sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
 472                 model->longname, chip->revision, chip->addr, chip->irq);
 473         strcpy(card->mixername, model->chip);
 474         snd_component_add(card, model->chip);
 475
 476         err = oxygen_pcm_init(chip);
 477         if (err < 0)
 478                 goto err_card;
 479
 480         err = oxygen_mixer_init(chip);
 481         if (err < 0)
 482                 goto err_card;
 483
 484         if (model->misc_flags & OXYGEN_MISC_MIDI) {
 485                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
 486                                           chip->addr + OXYGEN_MPU401,
 487                                           MPU401_INFO_INTEGRATED, 0, 0,
 488                                           &chip->midi);
 489                 if (err < 0)
 490                         goto err_card;
 491         }
 492
 493         oxygen_proc_init(chip);
 494
 495         spin_lock_irq(&chip->reg_lock);
 496         chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT | OXYGEN_INT_AC97;
 497         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 498         spin_unlock_irq(&chip->reg_lock);
 499
 500         err = snd_card_register(card);
 501         if (err < 0)
 502                 goto err_card;
 503
 504         pci_set_drvdata(pci, card);
 505         return 0;
 506
 507 err_pci_regions:
 508         pci_release_regions(pci);
 509 err_pci_enable:
 510         pci_disable_device(pci);
 511 err_card:
 512         snd_card_free(card);
 513         return err;
 514 }
 515 EXPORT_SYMBOL(oxygen_pci_probe);
 516
 517 void oxygen_pci_remove(struct pci_dev *pci)
 518 {
 519         snd_card_free(pci_get_drvdata(pci));
 520         pci_set_drvdata(pci, NULL);
 521 }
 522 EXPORT_SYMBOL(oxygen_pci_remove);