git.oblomov.eu Git - linux-2.6/blob - 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 v2");
  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 < OXYGEN_IO_SIZE; 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] = chip->model->dac_volume_min;
 225         chip->dac_mute = 1;
 226         chip->spdif_playback_enable = 1;
 227         chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
 228                 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
 229         chip->spdif_pcm_bits = chip->spdif_bits;
 230
 231         if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
 232                 chip->revision = 2;
 233         else
 234                 chip->revision = 1;
 235
 236         if (chip->revision == 1)
 237                 oxygen_set_bits8(chip, OXYGEN_MISC,
 238                                  OXYGEN_MISC_PCI_MEM_W_1_CLOCK);
 239
 240         i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
 241         chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
 242         chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
 243
 244         oxygen_write8_masked(chip, OXYGEN_FUNCTION,
 245                              OXYGEN_FUNCTION_RESET_CODEC |
 246                              chip->model->function_flags,
 247                              OXYGEN_FUNCTION_RESET_CODEC |
 248                              OXYGEN_FUNCTION_2WIRE_SPI_MASK |
 249                              OXYGEN_FUNCTION_ENABLE_SPI_4_5);
 250         oxygen_write8(chip, OXYGEN_DMA_STATUS, 0);
 251         oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0);
 252         oxygen_write8(chip, OXYGEN_PLAY_CHANNELS,
 253                       OXYGEN_PLAY_CHANNELS_2 |
 254                       OXYGEN_DMA_A_BURST_8 |
 255                       OXYGEN_DMA_MULTICH_BURST_8);
 256         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 257         oxygen_write8_masked(chip, OXYGEN_MISC,
 258                              chip->model->misc_flags,
 259                              OXYGEN_MISC_WRITE_PCI_SUBID |
 260                              OXYGEN_MISC_REC_C_FROM_SPDIF |
 261                              OXYGEN_MISC_REC_B_FROM_AC97 |
 262                              OXYGEN_MISC_REC_A_FROM_MULTICH |
 263                              OXYGEN_MISC_MIDI);
 264         oxygen_write8(chip, OXYGEN_REC_FORMAT,
 265                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) |
 266                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) |
 267                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT));
 268         oxygen_write8(chip, OXYGEN_PLAY_FORMAT,
 269                       (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) |
 270                       (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT));
 271         oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2);
 272         oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT,
 273                        OXYGEN_RATE_48000 | chip->model->dac_i2s_format |
 274                        OXYGEN_I2S_MCLK_256 | OXYGEN_I2S_BITS_16 |
 275                        OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 276         if (chip->model->pcm_dev_cfg & CAPTURE_0_FROM_I2S_1)
 277                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
 278                                OXYGEN_RATE_48000 | chip->model->adc_i2s_format |
 279                                OXYGEN_I2S_MCLK_256 | OXYGEN_I2S_BITS_16 |
 280                                OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 281         else
 282                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
 283                                OXYGEN_I2S_MASTER | OXYGEN_I2S_MUTE_MCLK);
 284         if (chip->model->pcm_dev_cfg & (CAPTURE_0_FROM_I2S_2 |
 285                                         CAPTURE_2_FROM_I2S_2))
 286                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
 287                                OXYGEN_RATE_48000 | chip->model->adc_i2s_format |
 288                                OXYGEN_I2S_MCLK_256 | OXYGEN_I2S_BITS_16 |
 289                                OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 290         else
 291                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
 292                                OXYGEN_I2S_MASTER | OXYGEN_I2S_MUTE_MCLK);
 293         oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
 294                        OXYGEN_I2S_MASTER | OXYGEN_I2S_MUTE_MCLK);
 295         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 296                             OXYGEN_SPDIF_OUT_ENABLE |
 297                             OXYGEN_SPDIF_LOOPBACK);
 298         if (chip->model->pcm_dev_cfg & CAPTURE_1_FROM_SPDIF)
 299                 oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
 300                                       OXYGEN_SPDIF_SENSE_MASK |
 301                                       OXYGEN_SPDIF_LOCK_MASK |
 302                                       OXYGEN_SPDIF_RATE_MASK |
 303                                       OXYGEN_SPDIF_LOCK_PAR |
 304                                       OXYGEN_SPDIF_IN_CLOCK_96,
 305                                       OXYGEN_SPDIF_SENSE_MASK |
 306                                       OXYGEN_SPDIF_LOCK_MASK |
 307                                       OXYGEN_SPDIF_RATE_MASK |
 308                                       OXYGEN_SPDIF_SENSE_PAR |
 309                                       OXYGEN_SPDIF_LOCK_PAR |
 310                                       OXYGEN_SPDIF_IN_CLOCK_MASK);
 311         else
 312                 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 313                                     OXYGEN_SPDIF_SENSE_MASK |
 314                                     OXYGEN_SPDIF_LOCK_MASK |
 315                                     OXYGEN_SPDIF_RATE_MASK);
 316         oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
 317         oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS,
 318                        OXYGEN_2WIRE_LENGTH_8 |
 319                        OXYGEN_2WIRE_INTERRUPT_MASK |
 320                        OXYGEN_2WIRE_SPEED_STANDARD);
 321         oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK);
 322         oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0);
 323         oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0);
 324         oxygen_write16(chip, OXYGEN_PLAY_ROUTING,
 325                        OXYGEN_PLAY_MULTICH_I2S_DAC |
 326                        OXYGEN_PLAY_SPDIF_SPDIF |
 327                        (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
 328                        (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
 329                        (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
 330                        (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT));
 331         oxygen_write8(chip, OXYGEN_REC_ROUTING,
 332                       OXYGEN_REC_A_ROUTE_I2S_ADC_1 |
 333                       OXYGEN_REC_B_ROUTE_I2S_ADC_2 |
 334                       OXYGEN_REC_C_ROUTE_SPDIF);
 335         oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0);
 336         oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING,
 337                       (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) |
 338                       (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) |
 339                       (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
 340                       (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
 341
 342         if (chip->has_ac97_0 | chip->has_ac97_1)
 343                 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
 344                               OXYGEN_AC97_INT_READ_DONE |
 345                               OXYGEN_AC97_INT_WRITE_DONE);
 346         else
 347                 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0);
 348         oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
 349         oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
 350         if (!(chip->has_ac97_0 | chip->has_ac97_1))
 351                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 352                                   OXYGEN_AC97_CLOCK_DISABLE);
 353         if (!chip->has_ac97_0) {
 354                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 355                                   OXYGEN_AC97_NO_CODEC_0);
 356         } else {
 357                 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
 358                 msleep(1);
 359                 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP,
 360                                      CM9780_GPIO0IO | CM9780_GPIO1IO);
 361                 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER,
 362                                      CM9780_BSTSEL | CM9780_STRO_MIC |
 363                                      CM9780_MIX2FR | CM9780_PCBSW);
 364                 oxygen_ac97_set_bits(chip, 0, CM9780_JACK,
 365                                      CM9780_RSOE | CM9780_CBOE |
 366                                      CM9780_SSOE | CM9780_FROE |
 367                                      CM9780_MIC2MIC | CM9780_LI2LI);
 368                 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
 369                 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
 370                 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
 371                 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
 372                 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
 373                 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
 374                 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
 375                 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
 376                 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
 377                 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
 378                 oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS,
 379                                        CM9780_GPO0);
 380                 /* power down unused ADCs and DACs */
 381                 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
 382                                      AC97_PD_PR0 | AC97_PD_PR1);
 383                 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
 384                                      AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
 385         }
 386         if (chip->has_ac97_1) {
 387                 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG,
 388                                   OXYGEN_AC97_CODEC1_SLOT3 |
 389                                   OXYGEN_AC97_CODEC1_SLOT4);
 390                 oxygen_write_ac97(chip, 1, AC97_RESET, 0);
 391                 msleep(1);
 392                 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000);
 393                 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000);
 394                 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000);
 395                 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808);
 396                 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808);
 397                 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808);
 398                 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808);
 399                 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808);
 400                 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808);
 401                 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000);
 402                 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000);
 403                 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040);
 404         }
 405 }
 406
 407 static void oxygen_card_free(struct snd_card *card)
 408 {
 409         struct oxygen *chip = card->private_data;
 410
 411         spin_lock_irq(&chip->reg_lock);
 412         chip->interrupt_mask = 0;
 413         chip->pcm_running = 0;
 414         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 415         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 416         spin_unlock_irq(&chip->reg_lock);
 417         if (chip->irq >= 0)
 418                 free_irq(chip->irq, chip);
 419         flush_scheduled_work();
 420         chip->model->cleanup(chip);
 421         mutex_destroy(&chip->mutex);
 422         pci_release_regions(chip->pci);
 423         pci_disable_device(chip->pci);
 424 }
 425
 426 int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
 427                      const struct oxygen_model *model)
 428 {
 429         struct snd_card *card;
 430         struct oxygen *chip;
 431         int err;
 432
 433         card = snd_card_new(index, id, model->owner,
 434                             sizeof *chip + model->model_data_size);
 435         if (!card)
 436                 return -ENOMEM;
 437
 438         chip = card->private_data;
 439         chip->card = card;
 440         chip->pci = pci;
 441         chip->irq = -1;
 442         chip->model = model;
 443         chip->model_data = chip + 1;
 444         spin_lock_init(&chip->reg_lock);
 445         mutex_init(&chip->mutex);
 446         INIT_WORK(&chip->spdif_input_bits_work,
 447                   oxygen_spdif_input_bits_changed);
 448         INIT_WORK(&chip->gpio_work, oxygen_gpio_changed);
 449         init_waitqueue_head(&chip->ac97_waitqueue);
 450
 451         err = pci_enable_device(pci);
 452         if (err < 0)
 453                 goto err_card;
 454
 455         err = pci_request_regions(pci, model->chip);
 456         if (err < 0) {
 457                 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
 458                 goto err_pci_enable;
 459         }
 460
 461         if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
 462             pci_resource_len(pci, 0) < OXYGEN_IO_SIZE) {
 463                 snd_printk(KERN_ERR "invalid PCI I/O range\n");
 464                 err = -ENXIO;
 465                 goto err_pci_regions;
 466         }
 467         chip->addr = pci_resource_start(pci, 0);
 468
 469         pci_set_master(pci);
 470         snd_card_set_dev(card, &pci->dev);
 471         card->private_free = oxygen_card_free;
 472
 473         oxygen_init(chip);
 474         model->init(chip);
 475
 476         err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
 477                           model->chip, chip);
 478         if (err < 0) {
 479                 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
 480                 goto err_card;
 481         }
 482         chip->irq = pci->irq;
 483
 484         strcpy(card->driver, model->chip);
 485         strcpy(card->shortname, model->shortname);
 486         sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
 487                 model->longname, chip->revision, chip->addr, chip->irq);
 488         strcpy(card->mixername, model->chip);
 489         snd_component_add(card, model->chip);
 490
 491         err = oxygen_pcm_init(chip);
 492         if (err < 0)
 493                 goto err_card;
 494
 495         err = oxygen_mixer_init(chip);
 496         if (err < 0)
 497                 goto err_card;
 498
 499         if (model->misc_flags & OXYGEN_MISC_MIDI) {
 500                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
 501                                           chip->addr + OXYGEN_MPU401,
 502                                           MPU401_INFO_INTEGRATED, 0, 0,
 503                                           &chip->midi);
 504                 if (err < 0)
 505                         goto err_card;
 506         }
 507
 508         oxygen_proc_init(chip);
 509
 510         spin_lock_irq(&chip->reg_lock);
 511         if (chip->model->pcm_dev_cfg & CAPTURE_1_FROM_SPDIF)
 512                 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
 513         if (chip->has_ac97_0 | chip->has_ac97_1)
 514                 chip->interrupt_mask |= OXYGEN_INT_AC97;
 515         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 516         spin_unlock_irq(&chip->reg_lock);
 517
 518         err = snd_card_register(card);
 519         if (err < 0)
 520                 goto err_card;
 521
 522         pci_set_drvdata(pci, card);
 523         return 0;
 524
 525 err_pci_regions:
 526         pci_release_regions(pci);
 527 err_pci_enable:
 528         pci_disable_device(pci);
 529 err_card:
 530         snd_card_free(card);
 531         return err;
 532 }
 533 EXPORT_SYMBOL(oxygen_pci_probe);
 534
 535 void oxygen_pci_remove(struct pci_dev *pci)
 536 {
 537         snd_card_free(pci_get_drvdata(pci));
 538         pci_set_drvdata(pci, NULL);
 539 }
 540 EXPORT_SYMBOL(oxygen_pci_remove);
 541
 542 #ifdef CONFIG_PM
 543 int oxygen_pci_suspend(struct pci_dev *pci, pm_message_t state)
 544 {
 545         struct snd_card *card = pci_get_drvdata(pci);
 546         struct oxygen *chip = card->private_data;
 547         unsigned int i, saved_interrupt_mask;
 548
 549         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 550
 551         for (i = 0; i < PCM_COUNT; ++i)
 552                 if (chip->streams[i])
 553                         snd_pcm_suspend(chip->streams[i]);
 554
 555         if (chip->model->suspend)
 556                 chip->model->suspend(chip);
 557
 558         spin_lock_irq(&chip->reg_lock);
 559         saved_interrupt_mask = chip->interrupt_mask;
 560         chip->interrupt_mask = 0;
 561         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 562         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 563         spin_unlock_irq(&chip->reg_lock);
 564
 565         synchronize_irq(chip->irq);
 566         flush_scheduled_work();
 567         chip->interrupt_mask = saved_interrupt_mask;
 568
 569         pci_disable_device(pci);
 570         pci_save_state(pci);
 571         pci_set_power_state(pci, pci_choose_state(pci, state));
 572         return 0;
 573 }
 574 EXPORT_SYMBOL(oxygen_pci_suspend);
 575
 576 static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = {
 577         0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff,
 578         0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000
 579 };
 580 static const u32 ac97_registers_to_restore[2][0x40 / 32] = {
 581         { 0x18284fa2, 0x03060000 },
 582         { 0x00007fa6, 0x00200000 }
 583 };
 584
 585 static inline int is_bit_set(const u32 *bitmap, unsigned int bit)
 586 {
 587         return bitmap[bit / 32] & (1 << (bit & 31));
 588 }
 589
 590 static void oxygen_restore_ac97(struct oxygen *chip, unsigned int codec)
 591 {
 592         unsigned int i;
 593
 594         oxygen_write_ac97(chip, codec, AC97_RESET, 0);
 595         msleep(1);
 596         for (i = 1; i < 0x40; ++i)
 597                 if (is_bit_set(ac97_registers_to_restore[codec], i))
 598                         oxygen_write_ac97(chip, codec, i * 2,
 599                                           chip->saved_ac97_registers[codec][i]);
 600 }
 601
 602 int oxygen_pci_resume(struct pci_dev *pci)
 603 {
 604         struct snd_card *card = pci_get_drvdata(pci);
 605         struct oxygen *chip = card->private_data;
 606         unsigned int i;
 607
 608         pci_set_power_state(pci, PCI_D0);
 609         pci_restore_state(pci);
 610         if (pci_enable_device(pci) < 0) {
 611                 snd_printk(KERN_ERR "cannot reenable device");
 612                 snd_card_disconnect(card);
 613                 return -EIO;
 614         }
 615         pci_set_master(pci);
 616
 617         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 618         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 619         for (i = 0; i < OXYGEN_IO_SIZE; ++i)
 620                 if (is_bit_set(registers_to_restore, i))
 621                         oxygen_write8(chip, i, chip->saved_registers._8[i]);
 622         if (chip->has_ac97_0)
 623                 oxygen_restore_ac97(chip, 0);
 624         if (chip->has_ac97_1)
 625                 oxygen_restore_ac97(chip, 1);
 626
 627         if (chip->model->resume)
 628                 chip->model->resume(chip);
 629
 630         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 631
 632         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 633         return 0;
 634 }
 635 EXPORT_SYMBOL(oxygen_pci_resume);
 636 #endif /* CONFIG_PM */