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 #define DRIVER "oxygen"
  38
  39 static inline int oxygen_uart_input_ready(struct oxygen *chip)
  40 {
  41         return !(oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_RX_EMPTY);
  42 }
  43
  44 static void oxygen_read_uart(struct oxygen *chip)
  45 {
  46         if (unlikely(!oxygen_uart_input_ready(chip))) {
  47                 /* no data, but read it anyway to clear the interrupt */
  48                 oxygen_read8(chip, OXYGEN_MPU401);
  49                 return;
  50         }
  51         do {
  52                 u8 data = oxygen_read8(chip, OXYGEN_MPU401);
  53                 if (data == MPU401_ACK)
  54                         continue;
  55                 if (chip->uart_input_count >= ARRAY_SIZE(chip->uart_input))
  56                         chip->uart_input_count = 0;
  57                 chip->uart_input[chip->uart_input_count++] = data;
  58         } while (oxygen_uart_input_ready(chip));
  59         if (chip->model.uart_input)
  60                 chip->model.uart_input(chip);
  61 }
  62
  63 static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
  64 {
  65         struct oxygen *chip = dev_id;
  66         unsigned int status, clear, elapsed_streams, i;
  67
  68         status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
  69         if (!status)
  70                 return IRQ_NONE;
  71
  72         spin_lock(&chip->reg_lock);
  73
  74         clear = status & (OXYGEN_CHANNEL_A |
  75                           OXYGEN_CHANNEL_B |
  76                           OXYGEN_CHANNEL_C |
  77                           OXYGEN_CHANNEL_SPDIF |
  78                           OXYGEN_CHANNEL_MULTICH |
  79                           OXYGEN_CHANNEL_AC97 |
  80                           OXYGEN_INT_SPDIF_IN_DETECT |
  81                           OXYGEN_INT_GPIO |
  82                           OXYGEN_INT_AC97);
  83         if (clear) {
  84                 if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
  85                         chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
  86                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  87                                chip->interrupt_mask & ~clear);
  88                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  89                                chip->interrupt_mask);
  90         }
  91
  92         elapsed_streams = status & chip->pcm_running;
  93
  94         spin_unlock(&chip->reg_lock);
  95
  96         for (i = 0; i < PCM_COUNT; ++i)
  97                 if ((elapsed_streams & (1 << i)) && chip->streams[i])
  98                         snd_pcm_period_elapsed(chip->streams[i]);
  99
 100         if (status & OXYGEN_INT_SPDIF_IN_DETECT) {
 101                 spin_lock(&chip->reg_lock);
 102                 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
 103                 if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT |
 104                          OXYGEN_SPDIF_RATE_INT)) {
 105                         /* write the interrupt bit(s) to clear */
 106                         oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
 107                         schedule_work(&chip->spdif_input_bits_work);
 108                 }
 109                 spin_unlock(&chip->reg_lock);
 110         }
 111
 112         if (status & OXYGEN_INT_GPIO)
 113                 schedule_work(&chip->gpio_work);
 114
 115         if (status & OXYGEN_INT_MIDI) {
 116                 if (chip->midi)
 117                         snd_mpu401_uart_interrupt(0, chip->midi->private_data);
 118                 else
 119                         oxygen_read_uart(chip);
 120         }
 121
 122         if (status & OXYGEN_INT_AC97)
 123                 wake_up(&chip->ac97_waitqueue);
 124
 125         return IRQ_HANDLED;
 126 }
 127
 128 static void oxygen_spdif_input_bits_changed(struct work_struct *work)
 129 {
 130         struct oxygen *chip = container_of(work, struct oxygen,
 131                                            spdif_input_bits_work);
 132         u32 reg;
 133
 134         /*
 135          * This function gets called when there is new activity on the SPDIF
 136          * input, or when we lose lock on the input signal, or when the rate
 137          * changes.
 138          */
 139         msleep(1);
 140         spin_lock_irq(&chip->reg_lock);
 141         reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
 142         if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
 143                     OXYGEN_SPDIF_LOCK_STATUS))
 144             == OXYGEN_SPDIF_SENSE_STATUS) {
 145                 /*
 146                  * If we detect activity on the SPDIF input but cannot lock to
 147                  * a signal, the clock bit is likely to be wrong.
 148                  */
 149                 reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK;
 150                 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
 151                 spin_unlock_irq(&chip->reg_lock);
 152                 msleep(1);
 153                 spin_lock_irq(&chip->reg_lock);
 154                 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
 155                 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
 156                             OXYGEN_SPDIF_LOCK_STATUS))
 157                     == OXYGEN_SPDIF_SENSE_STATUS) {
 158                         /* nothing detected with either clock; give up */
 159                         if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK)
 160                             == OXYGEN_SPDIF_IN_CLOCK_192) {
 161                                 /*
 162                                  * Reset clock to <= 96 kHz because this is
 163                                  * more likely to be received next time.
 164                                  */
 165                                 reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK;
 166                                 reg |= OXYGEN_SPDIF_IN_CLOCK_96;
 167                                 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
 168                         }
 169                 }
 170         }
 171         spin_unlock_irq(&chip->reg_lock);
 172
 173         if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
 174                 spin_lock_irq(&chip->reg_lock);
 175                 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
 176                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
 177                                chip->interrupt_mask);
 178                 spin_unlock_irq(&chip->reg_lock);
 179
 180                 /*
 181                  * We don't actually know that any channel status bits have
 182                  * changed, but let's send a notification just to be sure.
 183                  */
 184                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
 185                                &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
 186         }
 187 }
 188
 189 static void oxygen_gpio_changed(struct work_struct *work)
 190 {
 191         struct oxygen *chip = container_of(work, struct oxygen, gpio_work);
 192
 193         if (chip->model.gpio_changed)
 194                 chip->model.gpio_changed(chip);
 195 }
 196
 197 #ifdef CONFIG_PROC_FS
 198 static void oxygen_proc_read(struct snd_info_entry *entry,
 199                              struct snd_info_buffer *buffer)
 200 {
 201         struct oxygen *chip = entry->private_data;
 202         int i, j;
 203
 204         snd_iprintf(buffer, "CMI8788\n\n");
 205         for (i = 0; i < OXYGEN_IO_SIZE; i += 0x10) {
 206                 snd_iprintf(buffer, "%02x:", i);
 207                 for (j = 0; j < 0x10; ++j)
 208                         snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
 209                 snd_iprintf(buffer, "\n");
 210         }
 211         if (mutex_lock_interruptible(&chip->mutex) < 0)
 212                 return;
 213         if (chip->has_ac97_0) {
 214                 snd_iprintf(buffer, "\nAC97\n");
 215                 for (i = 0; i < 0x80; i += 0x10) {
 216                         snd_iprintf(buffer, "%02x:", i);
 217                         for (j = 0; j < 0x10; j += 2)
 218                                 snd_iprintf(buffer, " %04x",
 219                                             oxygen_read_ac97(chip, 0, i + j));
 220                         snd_iprintf(buffer, "\n");
 221                 }
 222         }
 223         if (chip->has_ac97_1) {
 224                 snd_iprintf(buffer, "\nAC97 2\n");
 225                 for (i = 0; i < 0x80; i += 0x10) {
 226                         snd_iprintf(buffer, "%02x:", i);
 227                         for (j = 0; j < 0x10; j += 2)
 228                                 snd_iprintf(buffer, " %04x",
 229                                             oxygen_read_ac97(chip, 1, i + j));
 230                         snd_iprintf(buffer, "\n");
 231                 }
 232         }
 233         mutex_unlock(&chip->mutex);
 234 }
 235
 236 static void oxygen_proc_init(struct oxygen *chip)
 237 {
 238         struct snd_info_entry *entry;
 239
 240         if (!snd_card_proc_new(chip->card, "cmi8788", &entry))
 241                 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
 242 }
 243 #else
 244 #define oxygen_proc_init(chip)
 245 #endif
 246
 247 static const struct pci_device_id *
 248 oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[])
 249 {
 250         u16 subdevice;
 251
 252         /*
 253          * Make sure the EEPROM pins are available, i.e., not used for SPI.
 254          * (This function is called before we initialize or use SPI.)
 255          */
 256         oxygen_clear_bits8(chip, OXYGEN_FUNCTION,
 257                            OXYGEN_FUNCTION_ENABLE_SPI_4_5);
 258         /*
 259          * Read the subsystem device ID directly from the EEPROM, because the
 260          * chip didn't if the first EEPROM word was overwritten.
 261          */
 262         subdevice = oxygen_read_eeprom(chip, 2);
 263         /* use default ID if EEPROM is missing */
 264         if (subdevice == 0xffff)
 265                 subdevice = 0x8788;
 266         /*
 267          * We use only the subsystem device ID for searching because it is
 268          * unique even without the subsystem vendor ID, which may have been
 269          * overwritten in the EEPROM.
 270          */
 271         for (; ids->vendor; ++ids)
 272                 if (ids->subdevice == subdevice &&
 273                     ids->driver_data != BROKEN_EEPROM_DRIVER_DATA)
 274                         return ids;
 275         return NULL;
 276 }
 277
 278 static void oxygen_restore_eeprom(struct oxygen *chip,
 279                                   const struct pci_device_id *id)
 280 {
 281         u16 eeprom_id;
 282
 283         eeprom_id = oxygen_read_eeprom(chip, 0);
 284         if (eeprom_id != OXYGEN_EEPROM_ID &&
 285             (eeprom_id != 0xffff || id->subdevice != 0x8788)) {
 286                 /*
 287                  * This function gets called only when a known card model has
 288                  * been detected, i.e., we know there is a valid subsystem
 289                  * product ID at index 2 in the EEPROM.  Therefore, we have
 290                  * been able to deduce the correct subsystem vendor ID, and
 291                  * this is enough information to restore the original EEPROM
 292                  * contents.
 293                  */
 294                 oxygen_write_eeprom(chip, 1, id->subvendor);
 295                 oxygen_write_eeprom(chip, 0, OXYGEN_EEPROM_ID);
 296
 297                 oxygen_set_bits8(chip, OXYGEN_MISC,
 298                                  OXYGEN_MISC_WRITE_PCI_SUBID);
 299                 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID,
 300                                       id->subvendor);
 301                 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_ID,
 302                                       id->subdevice);
 303                 oxygen_clear_bits8(chip, OXYGEN_MISC,
 304                                    OXYGEN_MISC_WRITE_PCI_SUBID);
 305
 306                 snd_printk(KERN_INFO "EEPROM ID restored\n");
 307         }
 308 }
 309
 310 static void pci_bridge_magic(void)
 311 {
 312         struct pci_dev *pci = NULL;
 313         u32 tmp;
 314
 315         for (;;) {
 316                 /* If there is any Pericom PI7C9X110 PCI-E/PCI bridge ... */
 317                 pci = pci_get_device(0x12d8, 0xe110, pci);
 318                 if (!pci)
 319                         break;
 320                 /*
 321                  * ... configure its secondary internal arbiter to park to
 322                  * the secondary port, instead of to the last master.
 323                  */
 324                 if (!pci_read_config_dword(pci, 0x40, &tmp)) {
 325                         tmp |= 1;
 326                         pci_write_config_dword(pci, 0x40, tmp);
 327                 }
 328                 /* Why?  Try asking C-Media. */
 329         }
 330 }
 331
 332 static void oxygen_init(struct oxygen *chip)
 333 {
 334         unsigned int i;
 335
 336         chip->dac_routing = 1;
 337         for (i = 0; i < 8; ++i)
 338                 chip->dac_volume[i] = chip->model.dac_volume_min;
 339         chip->dac_mute = 1;
 340         chip->spdif_playback_enable = 1;
 341         chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
 342                 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
 343         chip->spdif_pcm_bits = chip->spdif_bits;
 344
 345         if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
 346                 chip->revision = 2;
 347         else
 348                 chip->revision = 1;
 349
 350         if (chip->revision == 1)
 351                 oxygen_set_bits8(chip, OXYGEN_MISC,
 352                                  OXYGEN_MISC_PCI_MEM_W_1_CLOCK);
 353
 354         i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
 355         chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
 356         chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
 357
 358         oxygen_write8_masked(chip, OXYGEN_FUNCTION,
 359                              OXYGEN_FUNCTION_RESET_CODEC |
 360                              chip->model.function_flags,
 361                              OXYGEN_FUNCTION_RESET_CODEC |
 362                              OXYGEN_FUNCTION_2WIRE_SPI_MASK |
 363                              OXYGEN_FUNCTION_ENABLE_SPI_4_5);
 364         oxygen_write8(chip, OXYGEN_DMA_STATUS, 0);
 365         oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0);
 366         oxygen_write8(chip, OXYGEN_PLAY_CHANNELS,
 367                       OXYGEN_PLAY_CHANNELS_2 |
 368                       OXYGEN_DMA_A_BURST_8 |
 369                       OXYGEN_DMA_MULTICH_BURST_8);
 370         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 371         oxygen_write8_masked(chip, OXYGEN_MISC,
 372                              chip->model.misc_flags,
 373                              OXYGEN_MISC_WRITE_PCI_SUBID |
 374                              OXYGEN_MISC_REC_C_FROM_SPDIF |
 375                              OXYGEN_MISC_REC_B_FROM_AC97 |
 376                              OXYGEN_MISC_REC_A_FROM_MULTICH |
 377                              OXYGEN_MISC_MIDI);
 378         oxygen_write8(chip, OXYGEN_REC_FORMAT,
 379                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) |
 380                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) |
 381                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT));
 382         oxygen_write8(chip, OXYGEN_PLAY_FORMAT,
 383                       (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) |
 384                       (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT));
 385         oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2);
 386         oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT,
 387                        OXYGEN_RATE_48000 | chip->model.dac_i2s_format |
 388                        OXYGEN_I2S_MCLK_256 | OXYGEN_I2S_BITS_16 |
 389                        OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 390         if (chip->model.device_config & CAPTURE_0_FROM_I2S_1)
 391                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
 392                                OXYGEN_RATE_48000 | chip->model.adc_i2s_format |
 393                                OXYGEN_I2S_MCLK_256 | OXYGEN_I2S_BITS_16 |
 394                                OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 395         else
 396                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
 397                                OXYGEN_I2S_MASTER | OXYGEN_I2S_MUTE_MCLK);
 398         if (chip->model.device_config & (CAPTURE_0_FROM_I2S_2 |
 399                                          CAPTURE_2_FROM_I2S_2))
 400                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
 401                                OXYGEN_RATE_48000 | chip->model.adc_i2s_format |
 402                                OXYGEN_I2S_MCLK_256 | OXYGEN_I2S_BITS_16 |
 403                                OXYGEN_I2S_MASTER | OXYGEN_I2S_BCLK_64);
 404         else
 405                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
 406                                OXYGEN_I2S_MASTER | OXYGEN_I2S_MUTE_MCLK);
 407         oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
 408                        OXYGEN_I2S_MASTER | OXYGEN_I2S_MUTE_MCLK);
 409         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 410                             OXYGEN_SPDIF_OUT_ENABLE |
 411                             OXYGEN_SPDIF_LOOPBACK);
 412         if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
 413                 oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
 414                                       OXYGEN_SPDIF_SENSE_MASK |
 415                                       OXYGEN_SPDIF_LOCK_MASK |
 416                                       OXYGEN_SPDIF_RATE_MASK |
 417                                       OXYGEN_SPDIF_LOCK_PAR |
 418                                       OXYGEN_SPDIF_IN_CLOCK_96,
 419                                       OXYGEN_SPDIF_SENSE_MASK |
 420                                       OXYGEN_SPDIF_LOCK_MASK |
 421                                       OXYGEN_SPDIF_RATE_MASK |
 422                                       OXYGEN_SPDIF_SENSE_PAR |
 423                                       OXYGEN_SPDIF_LOCK_PAR |
 424                                       OXYGEN_SPDIF_IN_CLOCK_MASK);
 425         else
 426                 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 427                                     OXYGEN_SPDIF_SENSE_MASK |
 428                                     OXYGEN_SPDIF_LOCK_MASK |
 429                                     OXYGEN_SPDIF_RATE_MASK);
 430         oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
 431         oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS,
 432                        OXYGEN_2WIRE_LENGTH_8 |
 433                        OXYGEN_2WIRE_INTERRUPT_MASK |
 434                        OXYGEN_2WIRE_SPEED_STANDARD);
 435         oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK);
 436         oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0);
 437         oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0);
 438         oxygen_write16(chip, OXYGEN_PLAY_ROUTING,
 439                        OXYGEN_PLAY_MULTICH_I2S_DAC |
 440                        OXYGEN_PLAY_SPDIF_SPDIF |
 441                        (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
 442                        (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
 443                        (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
 444                        (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT));
 445         oxygen_write8(chip, OXYGEN_REC_ROUTING,
 446                       OXYGEN_REC_A_ROUTE_I2S_ADC_1 |
 447                       OXYGEN_REC_B_ROUTE_I2S_ADC_2 |
 448                       OXYGEN_REC_C_ROUTE_SPDIF);
 449         oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0);
 450         oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING,
 451                       (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) |
 452                       (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) |
 453                       (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
 454                       (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
 455
 456         if (chip->has_ac97_0 | chip->has_ac97_1)
 457                 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
 458                               OXYGEN_AC97_INT_READ_DONE |
 459                               OXYGEN_AC97_INT_WRITE_DONE);
 460         else
 461                 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0);
 462         oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
 463         oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
 464         if (!(chip->has_ac97_0 | chip->has_ac97_1))
 465                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 466                                   OXYGEN_AC97_CLOCK_DISABLE);
 467         if (!chip->has_ac97_0) {
 468                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 469                                   OXYGEN_AC97_NO_CODEC_0);
 470         } else {
 471                 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
 472                 msleep(1);
 473                 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP,
 474                                      CM9780_GPIO0IO | CM9780_GPIO1IO);
 475                 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER,
 476                                      CM9780_BSTSEL | CM9780_STRO_MIC |
 477                                      CM9780_MIX2FR | CM9780_PCBSW);
 478                 oxygen_ac97_set_bits(chip, 0, CM9780_JACK,
 479                                      CM9780_RSOE | CM9780_CBOE |
 480                                      CM9780_SSOE | CM9780_FROE |
 481                                      CM9780_MIC2MIC | CM9780_LI2LI);
 482                 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
 483                 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
 484                 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
 485                 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
 486                 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
 487                 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
 488                 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
 489                 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
 490                 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
 491                 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
 492                 oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS,
 493                                        CM9780_GPO0);
 494                 /* power down unused ADCs and DACs */
 495                 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
 496                                      AC97_PD_PR0 | AC97_PD_PR1);
 497                 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
 498                                      AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
 499         }
 500         if (chip->has_ac97_1) {
 501                 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG,
 502                                   OXYGEN_AC97_CODEC1_SLOT3 |
 503                                   OXYGEN_AC97_CODEC1_SLOT4);
 504                 oxygen_write_ac97(chip, 1, AC97_RESET, 0);
 505                 msleep(1);
 506                 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000);
 507                 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000);
 508                 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000);
 509                 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808);
 510                 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808);
 511                 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808);
 512                 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808);
 513                 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808);
 514                 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808);
 515                 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000);
 516                 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000);
 517                 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040);
 518         }
 519 }
 520
 521 static void oxygen_card_free(struct snd_card *card)
 522 {
 523         struct oxygen *chip = card->private_data;
 524
 525         spin_lock_irq(&chip->reg_lock);
 526         chip->interrupt_mask = 0;
 527         chip->pcm_running = 0;
 528         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 529         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 530         spin_unlock_irq(&chip->reg_lock);
 531         if (chip->irq >= 0)
 532                 free_irq(chip->irq, chip);
 533         flush_scheduled_work();
 534         chip->model.cleanup(chip);
 535         kfree(chip->model_data);
 536         mutex_destroy(&chip->mutex);
 537         pci_release_regions(chip->pci);
 538         pci_disable_device(chip->pci);
 539 }
 540
 541 int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
 542                      struct module *owner,
 543                      const struct pci_device_id *ids,
 544                      int (*get_model)(struct oxygen *chip,
 545                                       const struct pci_device_id *id
 546                                      )
 547                     )
 548 {
 549         struct snd_card *card;
 550         struct oxygen *chip;
 551         const struct pci_device_id *pci_id;
 552         int err;
 553
 554         err = snd_card_create(index, id, owner, sizeof(*chip), &card);
 555         if (err < 0)
 556                 return err;
 557
 558         chip = card->private_data;
 559         chip->card = card;
 560         chip->pci = pci;
 561         chip->irq = -1;
 562         spin_lock_init(&chip->reg_lock);
 563         mutex_init(&chip->mutex);
 564         INIT_WORK(&chip->spdif_input_bits_work,
 565                   oxygen_spdif_input_bits_changed);
 566         INIT_WORK(&chip->gpio_work, oxygen_gpio_changed);
 567         init_waitqueue_head(&chip->ac97_waitqueue);
 568
 569         err = pci_enable_device(pci);
 570         if (err < 0)
 571                 goto err_card;
 572
 573         err = pci_request_regions(pci, DRIVER);
 574         if (err < 0) {
 575                 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
 576                 goto err_pci_enable;
 577         }
 578
 579         if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
 580             pci_resource_len(pci, 0) < OXYGEN_IO_SIZE) {
 581                 snd_printk(KERN_ERR "invalid PCI I/O range\n");
 582                 err = -ENXIO;
 583                 goto err_pci_regions;
 584         }
 585         chip->addr = pci_resource_start(pci, 0);
 586
 587         pci_id = oxygen_search_pci_id(chip, ids);
 588         if (!pci_id) {
 589                 err = -ENODEV;
 590                 goto err_pci_regions;
 591         }
 592         oxygen_restore_eeprom(chip, pci_id);
 593         err = get_model(chip, pci_id);
 594         if (err < 0)
 595                 goto err_pci_regions;
 596
 597         if (chip->model.model_data_size) {
 598                 chip->model_data = kzalloc(chip->model.model_data_size,
 599                                            GFP_KERNEL);
 600                 if (!chip->model_data) {
 601                         err = -ENOMEM;
 602                         goto err_pci_regions;
 603                 }
 604         }
 605
 606         pci_set_master(pci);
 607         snd_card_set_dev(card, &pci->dev);
 608         card->private_free = oxygen_card_free;
 609
 610         pci_bridge_magic();
 611         oxygen_init(chip);
 612         chip->model.init(chip);
 613
 614         err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
 615                           DRIVER, chip);
 616         if (err < 0) {
 617                 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
 618                 goto err_card;
 619         }
 620         chip->irq = pci->irq;
 621
 622         strcpy(card->driver, chip->model.chip);
 623         strcpy(card->shortname, chip->model.shortname);
 624         sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
 625                 chip->model.longname, chip->revision, chip->addr, chip->irq);
 626         strcpy(card->mixername, chip->model.chip);
 627         snd_component_add(card, chip->model.chip);
 628
 629         err = oxygen_pcm_init(chip);
 630         if (err < 0)
 631                 goto err_card;
 632
 633         err = oxygen_mixer_init(chip);
 634         if (err < 0)
 635                 goto err_card;
 636
 637         if (chip->model.device_config & (MIDI_OUTPUT | MIDI_INPUT)) {
 638                 unsigned int info_flags = MPU401_INFO_INTEGRATED;
 639                 if (chip->model.device_config & MIDI_OUTPUT)
 640                         info_flags |= MPU401_INFO_OUTPUT;
 641                 if (chip->model.device_config & MIDI_INPUT)
 642                         info_flags |= MPU401_INFO_INPUT;
 643                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
 644                                           chip->addr + OXYGEN_MPU401,
 645                                           info_flags, 0, 0,
 646                                           &chip->midi);
 647                 if (err < 0)
 648                         goto err_card;
 649         }
 650
 651         oxygen_proc_init(chip);
 652
 653         spin_lock_irq(&chip->reg_lock);
 654         if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
 655                 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
 656         if (chip->has_ac97_0 | chip->has_ac97_1)
 657                 chip->interrupt_mask |= OXYGEN_INT_AC97;
 658         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 659         spin_unlock_irq(&chip->reg_lock);
 660
 661         err = snd_card_register(card);
 662         if (err < 0)
 663                 goto err_card;
 664
 665         pci_set_drvdata(pci, card);
 666         return 0;
 667
 668 err_pci_regions:
 669         pci_release_regions(pci);
 670 err_pci_enable:
 671         pci_disable_device(pci);
 672 err_card:
 673         snd_card_free(card);
 674         return err;
 675 }
 676 EXPORT_SYMBOL(oxygen_pci_probe);
 677
 678 void oxygen_pci_remove(struct pci_dev *pci)
 679 {
 680         snd_card_free(pci_get_drvdata(pci));
 681         pci_set_drvdata(pci, NULL);
 682 }
 683 EXPORT_SYMBOL(oxygen_pci_remove);
 684
 685 #ifdef CONFIG_PM
 686 int oxygen_pci_suspend(struct pci_dev *pci, pm_message_t state)
 687 {
 688         struct snd_card *card = pci_get_drvdata(pci);
 689         struct oxygen *chip = card->private_data;
 690         unsigned int i, saved_interrupt_mask;
 691
 692         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 693
 694         for (i = 0; i < PCM_COUNT; ++i)
 695                 if (chip->streams[i])
 696                         snd_pcm_suspend(chip->streams[i]);
 697
 698         if (chip->model.suspend)
 699                 chip->model.suspend(chip);
 700
 701         spin_lock_irq(&chip->reg_lock);
 702         saved_interrupt_mask = chip->interrupt_mask;
 703         chip->interrupt_mask = 0;
 704         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 705         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 706         spin_unlock_irq(&chip->reg_lock);
 707
 708         synchronize_irq(chip->irq);
 709         flush_scheduled_work();
 710         chip->interrupt_mask = saved_interrupt_mask;
 711
 712         pci_disable_device(pci);
 713         pci_save_state(pci);
 714         pci_set_power_state(pci, pci_choose_state(pci, state));
 715         return 0;
 716 }
 717 EXPORT_SYMBOL(oxygen_pci_suspend);
 718
 719 static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = {
 720         0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff,
 721         0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000
 722 };
 723 static const u32 ac97_registers_to_restore[2][0x40 / 32] = {
 724         { 0x18284fa2, 0x03060000 },
 725         { 0x00007fa6, 0x00200000 }
 726 };
 727
 728 static inline int is_bit_set(const u32 *bitmap, unsigned int bit)
 729 {
 730         return bitmap[bit / 32] & (1 << (bit & 31));
 731 }
 732
 733 static void oxygen_restore_ac97(struct oxygen *chip, unsigned int codec)
 734 {
 735         unsigned int i;
 736
 737         oxygen_write_ac97(chip, codec, AC97_RESET, 0);
 738         msleep(1);
 739         for (i = 1; i < 0x40; ++i)
 740                 if (is_bit_set(ac97_registers_to_restore[codec], i))
 741                         oxygen_write_ac97(chip, codec, i * 2,
 742                                           chip->saved_ac97_registers[codec][i]);
 743 }
 744
 745 int oxygen_pci_resume(struct pci_dev *pci)
 746 {
 747         struct snd_card *card = pci_get_drvdata(pci);
 748         struct oxygen *chip = card->private_data;
 749         unsigned int i;
 750
 751         pci_set_power_state(pci, PCI_D0);
 752         pci_restore_state(pci);
 753         if (pci_enable_device(pci) < 0) {
 754                 snd_printk(KERN_ERR "cannot reenable device");
 755                 snd_card_disconnect(card);
 756                 return -EIO;
 757         }
 758         pci_set_master(pci);
 759
 760         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 761         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 762         for (i = 0; i < OXYGEN_IO_SIZE; ++i)
 763                 if (is_bit_set(registers_to_restore, i))
 764                         oxygen_write8(chip, i, chip->saved_registers._8[i]);
 765         if (chip->has_ac97_0)
 766                 oxygen_restore_ac97(chip, 0);
 767         if (chip->has_ac97_1)
 768                 oxygen_restore_ac97(chip, 1);
 769
 770         if (chip->model.resume)
 771                 chip->model.resume(chip);
 772
 773         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 774
 775         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 776         return 0;
 777 }
 778 EXPORT_SYMBOL(oxygen_pci_resume);
 779 #endif /* CONFIG_PM */