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 <linux/slab.h>
  25 #include <linux/module.h>
  26 #include <sound/ac97_codec.h>
  27 #include <sound/asoundef.h>
  28 #include <sound/core.h>
  29 #include <sound/info.h>
  30 #include <sound/mpu401.h>
  31 #include <sound/pcm.h>
  32 #include "oxygen.h"
  33 #include "cm9780.h"
  34
  35 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  36 MODULE_DESCRIPTION("C-Media CMI8788 helper library");
  37 MODULE_LICENSE("GPL v2");
  38
  39 #define DRIVER "oxygen"
  40
  41 static inline int oxygen_uart_input_ready(struct oxygen *chip)
  42 {
  43         return !(oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_RX_EMPTY);
  44 }
  45
  46 static void oxygen_read_uart(struct oxygen *chip)
  47 {
  48         if (unlikely(!oxygen_uart_input_ready(chip))) {
  49                 /* no data, but read it anyway to clear the interrupt */
  50                 oxygen_read8(chip, OXYGEN_MPU401);
  51                 return;
  52         }
  53         do {
  54                 u8 data = oxygen_read8(chip, OXYGEN_MPU401);
  55                 if (data == MPU401_ACK)
  56                         continue;
  57                 if (chip->uart_input_count >= ARRAY_SIZE(chip->uart_input))
  58                         chip->uart_input_count = 0;
  59                 chip->uart_input[chip->uart_input_count++] = data;
  60         } while (oxygen_uart_input_ready(chip));
  61         if (chip->model.uart_input)
  62                 chip->model.uart_input(chip);
  63 }
  64
  65 static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
  66 {
  67         struct oxygen *chip = dev_id;
  68         unsigned int status, clear, elapsed_streams, i;
  69
  70         status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
  71         if (!status)
  72                 return IRQ_NONE;
  73
  74         spin_lock(&chip->reg_lock);
  75
  76         clear = status & (OXYGEN_CHANNEL_A |
  77                           OXYGEN_CHANNEL_B |
  78                           OXYGEN_CHANNEL_C |
  79                           OXYGEN_CHANNEL_SPDIF |
  80                           OXYGEN_CHANNEL_MULTICH |
  81                           OXYGEN_CHANNEL_AC97 |
  82                           OXYGEN_INT_SPDIF_IN_DETECT |
  83                           OXYGEN_INT_GPIO |
  84                           OXYGEN_INT_AC97);
  85         if (clear) {
  86                 if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
  87                         chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
  88                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  89                                chip->interrupt_mask & ~clear);
  90                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  91                                chip->interrupt_mask);
  92         }
  93
  94         elapsed_streams = status & chip->pcm_running;
  95
  96         spin_unlock(&chip->reg_lock);
  97
  98         for (i = 0; i < PCM_COUNT; ++i)
  99                 if ((elapsed_streams & (1 << i)) && chip->streams[i])
 100                         snd_pcm_period_elapsed(chip->streams[i]);
 101
 102         if (status & OXYGEN_INT_SPDIF_IN_DETECT) {
 103                 spin_lock(&chip->reg_lock);
 104                 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
 105                 if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT |
 106                          OXYGEN_SPDIF_RATE_INT)) {
 107                         /* write the interrupt bit(s) to clear */
 108                         oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
 109                         schedule_work(&chip->spdif_input_bits_work);
 110                 }
 111                 spin_unlock(&chip->reg_lock);
 112         }
 113
 114         if (status & OXYGEN_INT_GPIO)
 115                 schedule_work(&chip->gpio_work);
 116
 117         if (status & OXYGEN_INT_MIDI) {
 118                 if (chip->midi)
 119                         snd_mpu401_uart_interrupt(0, chip->midi->private_data);
 120                 else
 121                         oxygen_read_uart(chip);
 122         }
 123
 124         if (status & OXYGEN_INT_AC97)
 125                 wake_up(&chip->ac97_waitqueue);
 126
 127         return IRQ_HANDLED;
 128 }
 129
 130 static void oxygen_spdif_input_bits_changed(struct work_struct *work)
 131 {
 132         struct oxygen *chip = container_of(work, struct oxygen,
 133                                            spdif_input_bits_work);
 134         u32 reg;
 135
 136         /*
 137          * This function gets called when there is new activity on the SPDIF
 138          * input, or when we lose lock on the input signal, or when the rate
 139          * changes.
 140          */
 141         msleep(1);
 142         spin_lock_irq(&chip->reg_lock);
 143         reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
 144         if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
 145                     OXYGEN_SPDIF_LOCK_STATUS))
 146             == OXYGEN_SPDIF_SENSE_STATUS) {
 147                 /*
 148                  * If we detect activity on the SPDIF input but cannot lock to
 149                  * a signal, the clock bit is likely to be wrong.
 150                  */
 151                 reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK;
 152                 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
 153                 spin_unlock_irq(&chip->reg_lock);
 154                 msleep(1);
 155                 spin_lock_irq(&chip->reg_lock);
 156                 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
 157                 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
 158                             OXYGEN_SPDIF_LOCK_STATUS))
 159                     == OXYGEN_SPDIF_SENSE_STATUS) {
 160                         /* nothing detected with either clock; give up */
 161                         if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK)
 162                             == OXYGEN_SPDIF_IN_CLOCK_192) {
 163                                 /*
 164                                  * Reset clock to <= 96 kHz because this is
 165                                  * more likely to be received next time.
 166                                  */
 167                                 reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK;
 168                                 reg |= OXYGEN_SPDIF_IN_CLOCK_96;
 169                                 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
 170                         }
 171                 }
 172         }
 173         spin_unlock_irq(&chip->reg_lock);
 174
 175         if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
 176                 spin_lock_irq(&chip->reg_lock);
 177                 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
 178                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
 179                                chip->interrupt_mask);
 180                 spin_unlock_irq(&chip->reg_lock);
 181
 182                 /*
 183                  * We don't actually know that any channel status bits have
 184                  * changed, but let's send a notification just to be sure.
 185                  */
 186                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
 187                                &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
 188         }
 189 }
 190
 191 static void oxygen_gpio_changed(struct work_struct *work)
 192 {
 193         struct oxygen *chip = container_of(work, struct oxygen, gpio_work);
 194
 195         if (chip->model.gpio_changed)
 196                 chip->model.gpio_changed(chip);
 197 }
 198
 199 static void oxygen_proc_read(struct snd_info_entry *entry,
 200                              struct snd_info_buffer *buffer)
 201 {
 202         struct oxygen *chip = entry->private_data;
 203         int i, j;
 204
 205         switch (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_PACKAGE_ID_MASK) {
 206         case OXYGEN_PACKAGE_ID_8786: i = '6'; break;
 207         case OXYGEN_PACKAGE_ID_8787: i = '7'; break;
 208         case OXYGEN_PACKAGE_ID_8788: i = '8'; break;
 209         default:                     i = '?'; break;
 210         }
 211         snd_iprintf(buffer, "CMI878%c:\n", i);
 212         for (i = 0; i < OXYGEN_IO_SIZE; i += 0x10) {
 213                 snd_iprintf(buffer, "%02x:", i);
 214                 for (j = 0; j < 0x10; ++j)
 215                         snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
 216                 snd_iprintf(buffer, "\n");
 217         }
 218         if (mutex_lock_interruptible(&chip->mutex) < 0)
 219                 return;
 220         if (chip->has_ac97_0) {
 221                 snd_iprintf(buffer, "\nAC97:\n");
 222                 for (i = 0; i < 0x80; i += 0x10) {
 223                         snd_iprintf(buffer, "%02x:", i);
 224                         for (j = 0; j < 0x10; j += 2)
 225                                 snd_iprintf(buffer, " %04x",
 226                                             oxygen_read_ac97(chip, 0, i + j));
 227                         snd_iprintf(buffer, "\n");
 228                 }
 229         }
 230         if (chip->has_ac97_1) {
 231                 snd_iprintf(buffer, "\nAC97 2:\n");
 232                 for (i = 0; i < 0x80; i += 0x10) {
 233                         snd_iprintf(buffer, "%02x:", i);
 234                         for (j = 0; j < 0x10; j += 2)
 235                                 snd_iprintf(buffer, " %04x",
 236                                             oxygen_read_ac97(chip, 1, i + j));
 237                         snd_iprintf(buffer, "\n");
 238                 }
 239         }
 240         mutex_unlock(&chip->mutex);
 241         if (chip->model.dump_registers)
 242                 chip->model.dump_registers(chip, buffer);
 243 }
 244
 245 static void oxygen_proc_init(struct oxygen *chip)
 246 {
 247         snd_card_ro_proc_new(chip->card, "oxygen", chip, oxygen_proc_read);
 248 }
 249
 250 static const struct pci_device_id *
 251 oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[])
 252 {
 253         u16 subdevice;
 254
 255         /*
 256          * Make sure the EEPROM pins are available, i.e., not used for SPI.
 257          * (This function is called before we initialize or use SPI.)
 258          */
 259         oxygen_clear_bits8(chip, OXYGEN_FUNCTION,
 260                            OXYGEN_FUNCTION_ENABLE_SPI_4_5);
 261         /*
 262          * Read the subsystem device ID directly from the EEPROM, because the
 263          * chip didn't if the first EEPROM word was overwritten.
 264          */
 265         subdevice = oxygen_read_eeprom(chip, 2);
 266         /* use default ID if EEPROM is missing */
 267         if (subdevice == 0xffff && oxygen_read_eeprom(chip, 1) == 0xffff)
 268                 subdevice = 0x8788;
 269         /*
 270          * We use only the subsystem device ID for searching because it is
 271          * unique even without the subsystem vendor ID, which may have been
 272          * overwritten in the EEPROM.
 273          */
 274         for (; ids->vendor; ++ids)
 275                 if (ids->subdevice == subdevice &&
 276                     ids->driver_data != BROKEN_EEPROM_DRIVER_DATA)
 277                         return ids;
 278         return NULL;
 279 }
 280
 281 static void oxygen_restore_eeprom(struct oxygen *chip,
 282                                   const struct pci_device_id *id)
 283 {
 284         u16 eeprom_id;
 285
 286         eeprom_id = oxygen_read_eeprom(chip, 0);
 287         if (eeprom_id != OXYGEN_EEPROM_ID &&
 288             (eeprom_id != 0xffff || id->subdevice != 0x8788)) {
 289                 /*
 290                  * This function gets called only when a known card model has
 291                  * been detected, i.e., we know there is a valid subsystem
 292                  * product ID at index 2 in the EEPROM.  Therefore, we have
 293                  * been able to deduce the correct subsystem vendor ID, and
 294                  * this is enough information to restore the original EEPROM
 295                  * contents.
 296                  */
 297                 oxygen_write_eeprom(chip, 1, id->subvendor);
 298                 oxygen_write_eeprom(chip, 0, OXYGEN_EEPROM_ID);
 299
 300                 oxygen_set_bits8(chip, OXYGEN_MISC,
 301                                  OXYGEN_MISC_WRITE_PCI_SUBID);
 302                 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID,
 303                                       id->subvendor);
 304                 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_ID,
 305                                       id->subdevice);
 306                 oxygen_clear_bits8(chip, OXYGEN_MISC,
 307                                    OXYGEN_MISC_WRITE_PCI_SUBID);
 308
 309                 dev_info(chip->card->dev, "EEPROM ID restored\n");
 310         }
 311 }
 312
 313 static void configure_pcie_bridge(struct pci_dev *pci)
 314 {
 315         enum { PEX811X, PI7C9X110, XIO2001 };
 316         static const struct pci_device_id bridge_ids[] = {
 317                 { PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X },
 318                 { PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X },
 319                 { PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 },
 320                 { PCI_VDEVICE(TI, 0x8240), .driver_data = XIO2001 },
 321                 { }
 322         };
 323         struct pci_dev *bridge;
 324         const struct pci_device_id *id;
 325         u32 tmp;
 326
 327         if (!pci->bus || !pci->bus->self)
 328                 return;
 329         bridge = pci->bus->self;
 330
 331         id = pci_match_id(bridge_ids, bridge);
 332         if (!id)
 333                 return;
 334
 335         switch (id->driver_data) {
 336         case PEX811X:   /* PLX PEX8111/PEX8112 PCIe/PCI bridge */
 337                 pci_read_config_dword(bridge, 0x48, &tmp);
 338                 tmp |= 1;       /* enable blind prefetching */
 339                 tmp |= 1 << 11; /* enable beacon generation */
 340                 pci_write_config_dword(bridge, 0x48, tmp);
 341
 342                 pci_write_config_dword(bridge, 0x84, 0x0c);
 343                 pci_read_config_dword(bridge, 0x88, &tmp);
 344                 tmp &= ~(7 << 27);
 345                 tmp |= 2 << 27; /* set prefetch size to 128 bytes */
 346                 pci_write_config_dword(bridge, 0x88, tmp);
 347                 break;
 348
 349         case PI7C9X110: /* Pericom PI7C9X110 PCIe/PCI bridge */
 350                 pci_read_config_dword(bridge, 0x40, &tmp);
 351                 tmp |= 1;       /* park the PCI arbiter to the sound chip */
 352                 pci_write_config_dword(bridge, 0x40, tmp);
 353                 break;
 354
 355         case XIO2001: /* Texas Instruments XIO2001 PCIe/PCI bridge */
 356                 pci_read_config_dword(bridge, 0xe8, &tmp);
 357                 tmp &= ~0xf;    /* request length limit: 64 bytes */
 358                 tmp &= ~(0xf << 8);
 359                 tmp |= 1 << 8;  /* request count limit: one buffer */
 360                 pci_write_config_dword(bridge, 0xe8, tmp);
 361                 break;
 362         }
 363 }
 364
 365 static void oxygen_init(struct oxygen *chip)
 366 {
 367         unsigned int i;
 368
 369         chip->dac_routing = 1;
 370         for (i = 0; i < 8; ++i)
 371                 chip->dac_volume[i] = chip->model.dac_volume_min;
 372         chip->dac_mute = 1;
 373         chip->spdif_playback_enable = 0;
 374         chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
 375                 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
 376         chip->spdif_pcm_bits = chip->spdif_bits;
 377
 378         if (!(oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2))
 379                 oxygen_set_bits8(chip, OXYGEN_MISC,
 380                                  OXYGEN_MISC_PCI_MEM_W_1_CLOCK);
 381
 382         i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
 383         chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
 384         chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
 385
 386         oxygen_write8_masked(chip, OXYGEN_FUNCTION,
 387                              OXYGEN_FUNCTION_RESET_CODEC |
 388                              chip->model.function_flags,
 389                              OXYGEN_FUNCTION_RESET_CODEC |
 390                              OXYGEN_FUNCTION_2WIRE_SPI_MASK |
 391                              OXYGEN_FUNCTION_ENABLE_SPI_4_5);
 392         oxygen_write8(chip, OXYGEN_DMA_STATUS, 0);
 393         oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0);
 394         oxygen_write8(chip, OXYGEN_PLAY_CHANNELS,
 395                       OXYGEN_PLAY_CHANNELS_2 |
 396                       OXYGEN_DMA_A_BURST_8 |
 397                       OXYGEN_DMA_MULTICH_BURST_8);
 398         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 399         oxygen_write8_masked(chip, OXYGEN_MISC,
 400                              chip->model.misc_flags,
 401                              OXYGEN_MISC_WRITE_PCI_SUBID |
 402                              OXYGEN_MISC_REC_C_FROM_SPDIF |
 403                              OXYGEN_MISC_REC_B_FROM_AC97 |
 404                              OXYGEN_MISC_REC_A_FROM_MULTICH |
 405                              OXYGEN_MISC_MIDI);
 406         oxygen_write8(chip, OXYGEN_REC_FORMAT,
 407                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) |
 408                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) |
 409                       (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT));
 410         oxygen_write8(chip, OXYGEN_PLAY_FORMAT,
 411                       (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) |
 412                       (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT));
 413         oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2);
 414         oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT,
 415                        OXYGEN_RATE_48000 |
 416                        chip->model.dac_i2s_format |
 417                        OXYGEN_I2S_MCLK(chip->model.dac_mclks) |
 418                        OXYGEN_I2S_BITS_16 |
 419                        OXYGEN_I2S_MASTER |
 420                        OXYGEN_I2S_BCLK_64);
 421         if (chip->model.device_config & CAPTURE_0_FROM_I2S_1)
 422                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
 423                                OXYGEN_RATE_48000 |
 424                                chip->model.adc_i2s_format |
 425                                OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
 426                                OXYGEN_I2S_BITS_16 |
 427                                OXYGEN_I2S_MASTER |
 428                                OXYGEN_I2S_BCLK_64);
 429         else
 430                 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
 431                                OXYGEN_I2S_MASTER |
 432                                OXYGEN_I2S_MUTE_MCLK);
 433         if (chip->model.device_config & (CAPTURE_0_FROM_I2S_2 |
 434                                          CAPTURE_2_FROM_I2S_2))
 435                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
 436                                OXYGEN_RATE_48000 |
 437                                chip->model.adc_i2s_format |
 438                                OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
 439                                OXYGEN_I2S_BITS_16 |
 440                                OXYGEN_I2S_MASTER |
 441                                OXYGEN_I2S_BCLK_64);
 442         else
 443                 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
 444                                OXYGEN_I2S_MASTER |
 445                                OXYGEN_I2S_MUTE_MCLK);
 446         if (chip->model.device_config & CAPTURE_3_FROM_I2S_3)
 447                 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
 448                                OXYGEN_RATE_48000 |
 449                                chip->model.adc_i2s_format |
 450                                OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
 451                                OXYGEN_I2S_BITS_16 |
 452                                OXYGEN_I2S_MASTER |
 453                                OXYGEN_I2S_BCLK_64);
 454         else
 455                 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
 456                                OXYGEN_I2S_MASTER |
 457                                OXYGEN_I2S_MUTE_MCLK);
 458         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 459                             OXYGEN_SPDIF_OUT_ENABLE |
 460                             OXYGEN_SPDIF_LOOPBACK);
 461         if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
 462                 oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
 463                                       OXYGEN_SPDIF_SENSE_MASK |
 464                                       OXYGEN_SPDIF_LOCK_MASK |
 465                                       OXYGEN_SPDIF_RATE_MASK |
 466                                       OXYGEN_SPDIF_LOCK_PAR |
 467                                       OXYGEN_SPDIF_IN_CLOCK_96,
 468                                       OXYGEN_SPDIF_SENSE_MASK |
 469                                       OXYGEN_SPDIF_LOCK_MASK |
 470                                       OXYGEN_SPDIF_RATE_MASK |
 471                                       OXYGEN_SPDIF_SENSE_PAR |
 472                                       OXYGEN_SPDIF_LOCK_PAR |
 473                                       OXYGEN_SPDIF_IN_CLOCK_MASK);
 474         else
 475                 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 476                                     OXYGEN_SPDIF_SENSE_MASK |
 477                                     OXYGEN_SPDIF_LOCK_MASK |
 478                                     OXYGEN_SPDIF_RATE_MASK);
 479         oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
 480         oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS,
 481                        OXYGEN_2WIRE_LENGTH_8 |
 482                        OXYGEN_2WIRE_INTERRUPT_MASK |
 483                        OXYGEN_2WIRE_SPEED_STANDARD);
 484         oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK);
 485         oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0);
 486         oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0);
 487         oxygen_write16(chip, OXYGEN_PLAY_ROUTING,
 488                        OXYGEN_PLAY_MULTICH_I2S_DAC |
 489                        OXYGEN_PLAY_SPDIF_SPDIF |
 490                        (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
 491                        (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
 492                        (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
 493                        (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT));
 494         oxygen_write8(chip, OXYGEN_REC_ROUTING,
 495                       OXYGEN_REC_A_ROUTE_I2S_ADC_1 |
 496                       OXYGEN_REC_B_ROUTE_I2S_ADC_2 |
 497                       OXYGEN_REC_C_ROUTE_SPDIF);
 498         oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0);
 499         oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING,
 500                       (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) |
 501                       (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) |
 502                       (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
 503                       (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
 504
 505         if (chip->has_ac97_0 | chip->has_ac97_1)
 506                 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
 507                               OXYGEN_AC97_INT_READ_DONE |
 508                               OXYGEN_AC97_INT_WRITE_DONE);
 509         else
 510                 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0);
 511         oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
 512         oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
 513         if (!(chip->has_ac97_0 | chip->has_ac97_1))
 514                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 515                                   OXYGEN_AC97_CLOCK_DISABLE);
 516         if (!chip->has_ac97_0) {
 517                 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
 518                                   OXYGEN_AC97_NO_CODEC_0);
 519         } else {
 520                 oxygen_write_ac97(chip, 0, AC97_RESET, 0);
 521                 msleep(1);
 522                 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP,
 523                                      CM9780_GPIO0IO | CM9780_GPIO1IO);
 524                 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER,
 525                                      CM9780_BSTSEL | CM9780_STRO_MIC |
 526                                      CM9780_MIX2FR | CM9780_PCBSW);
 527                 oxygen_ac97_set_bits(chip, 0, CM9780_JACK,
 528                                      CM9780_RSOE | CM9780_CBOE |
 529                                      CM9780_SSOE | CM9780_FROE |
 530                                      CM9780_MIC2MIC | CM9780_LI2LI);
 531                 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
 532                 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
 533                 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
 534                 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
 535                 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
 536                 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
 537                 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
 538                 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
 539                 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
 540                 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
 541                 oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS,
 542                                        CM9780_GPO0);
 543                 /* power down unused ADCs and DACs */
 544                 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
 545                                      AC97_PD_PR0 | AC97_PD_PR1);
 546                 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
 547                                      AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
 548         }
 549         if (chip->has_ac97_1) {
 550                 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG,
 551                                   OXYGEN_AC97_CODEC1_SLOT3 |
 552                                   OXYGEN_AC97_CODEC1_SLOT4);
 553                 oxygen_write_ac97(chip, 1, AC97_RESET, 0);
 554                 msleep(1);
 555                 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000);
 556                 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000);
 557                 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000);
 558                 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808);
 559                 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808);
 560                 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808);
 561                 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808);
 562                 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808);
 563                 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808);
 564                 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000);
 565                 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000);
 566                 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040);
 567         }
 568 }
 569
 570 static void oxygen_shutdown(struct oxygen *chip)
 571 {
 572         spin_lock_irq(&chip->reg_lock);
 573         chip->interrupt_mask = 0;
 574         chip->pcm_running = 0;
 575         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 576         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 577         spin_unlock_irq(&chip->reg_lock);
 578 }
 579
 580 static void oxygen_card_free(struct snd_card *card)
 581 {
 582         struct oxygen *chip = card->private_data;
 583
 584         oxygen_shutdown(chip);
 585         if (chip->irq >= 0)
 586                 free_irq(chip->irq, chip);
 587         flush_work(&chip->spdif_input_bits_work);
 588         flush_work(&chip->gpio_work);
 589         chip->model.cleanup(chip);
 590         kfree(chip->model_data);
 591         mutex_destroy(&chip->mutex);
 592         pci_release_regions(chip->pci);
 593         pci_disable_device(chip->pci);
 594 }
 595
 596 int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
 597                      struct module *owner,
 598                      const struct pci_device_id *ids,
 599                      int (*get_model)(struct oxygen *chip,
 600                                       const struct pci_device_id *id
 601                                      )
 602                     )
 603 {
 604         struct snd_card *card;
 605         struct oxygen *chip;
 606         const struct pci_device_id *pci_id;
 607         int err;
 608
 609         err = snd_card_new(&pci->dev, index, id, owner,
 610                            sizeof(*chip), &card);
 611         if (err < 0)
 612                 return err;
 613
 614         chip = card->private_data;
 615         chip->card = card;
 616         chip->pci = pci;
 617         chip->irq = -1;
 618         spin_lock_init(&chip->reg_lock);
 619         mutex_init(&chip->mutex);
 620         INIT_WORK(&chip->spdif_input_bits_work,
 621                   oxygen_spdif_input_bits_changed);
 622         INIT_WORK(&chip->gpio_work, oxygen_gpio_changed);
 623         init_waitqueue_head(&chip->ac97_waitqueue);
 624
 625         err = pci_enable_device(pci);
 626         if (err < 0)
 627                 goto err_card;
 628
 629         err = pci_request_regions(pci, DRIVER);
 630         if (err < 0) {
 631                 dev_err(card->dev, "cannot reserve PCI resources\n");
 632                 goto err_pci_enable;
 633         }
 634
 635         if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
 636             pci_resource_len(pci, 0) < OXYGEN_IO_SIZE) {
 637                 dev_err(card->dev, "invalid PCI I/O range\n");
 638                 err = -ENXIO;
 639                 goto err_pci_regions;
 640         }
 641         chip->addr = pci_resource_start(pci, 0);
 642
 643         pci_id = oxygen_search_pci_id(chip, ids);
 644         if (!pci_id) {
 645                 err = -ENODEV;
 646                 goto err_pci_regions;
 647         }
 648         oxygen_restore_eeprom(chip, pci_id);
 649         err = get_model(chip, pci_id);
 650         if (err < 0)
 651                 goto err_pci_regions;
 652
 653         if (chip->model.model_data_size) {
 654                 chip->model_data = kzalloc(chip->model.model_data_size,
 655                                            GFP_KERNEL);
 656                 if (!chip->model_data) {
 657                         err = -ENOMEM;
 658                         goto err_pci_regions;
 659                 }
 660         }
 661
 662         pci_set_master(pci);
 663         card->private_free = oxygen_card_free;
 664
 665         configure_pcie_bridge(pci);
 666         oxygen_init(chip);
 667         chip->model.init(chip);
 668
 669         err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
 670                           KBUILD_MODNAME, chip);
 671         if (err < 0) {
 672                 dev_err(card->dev, "cannot grab interrupt %d\n", pci->irq);
 673                 goto err_card;
 674         }
 675         chip->irq = pci->irq;
 676
 677         strcpy(card->driver, chip->model.chip);
 678         strcpy(card->shortname, chip->model.shortname);
 679         sprintf(card->longname, "%s at %#lx, irq %i",
 680                 chip->model.longname, chip->addr, chip->irq);
 681         strcpy(card->mixername, chip->model.chip);
 682         snd_component_add(card, chip->model.chip);
 683
 684         err = oxygen_pcm_init(chip);
 685         if (err < 0)
 686                 goto err_card;
 687
 688         err = oxygen_mixer_init(chip);
 689         if (err < 0)
 690                 goto err_card;
 691
 692         if (chip->model.device_config & (MIDI_OUTPUT | MIDI_INPUT)) {
 693                 unsigned int info_flags =
 694                                 MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK;
 695                 if (chip->model.device_config & MIDI_OUTPUT)
 696                         info_flags |= MPU401_INFO_OUTPUT;
 697                 if (chip->model.device_config & MIDI_INPUT)
 698                         info_flags |= MPU401_INFO_INPUT;
 699                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
 700                                           chip->addr + OXYGEN_MPU401,
 701                                           info_flags, -1, &chip->midi);
 702                 if (err < 0)
 703                         goto err_card;
 704         }
 705
 706         oxygen_proc_init(chip);
 707
 708         spin_lock_irq(&chip->reg_lock);
 709         if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
 710                 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
 711         if (chip->has_ac97_0 | chip->has_ac97_1)
 712                 chip->interrupt_mask |= OXYGEN_INT_AC97;
 713         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 714         spin_unlock_irq(&chip->reg_lock);
 715
 716         err = snd_card_register(card);
 717         if (err < 0)
 718                 goto err_card;
 719
 720         pci_set_drvdata(pci, card);
 721         return 0;
 722
 723 err_pci_regions:
 724         pci_release_regions(pci);
 725 err_pci_enable:
 726         pci_disable_device(pci);
 727 err_card:
 728         snd_card_free(card);
 729         return err;
 730 }
 731 EXPORT_SYMBOL(oxygen_pci_probe);
 732
 733 void oxygen_pci_remove(struct pci_dev *pci)
 734 {
 735         snd_card_free(pci_get_drvdata(pci));
 736 }
 737 EXPORT_SYMBOL(oxygen_pci_remove);
 738
 739 #ifdef CONFIG_PM_SLEEP
 740 static int oxygen_pci_suspend(struct device *dev)
 741 {
 742         struct snd_card *card = dev_get_drvdata(dev);
 743         struct oxygen *chip = card->private_data;
 744         unsigned int saved_interrupt_mask;
 745
 746         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 747
 748         if (chip->model.suspend)
 749                 chip->model.suspend(chip);
 750
 751         spin_lock_irq(&chip->reg_lock);
 752         saved_interrupt_mask = chip->interrupt_mask;
 753         chip->interrupt_mask = 0;
 754         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 755         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 756         spin_unlock_irq(&chip->reg_lock);
 757
 758         synchronize_irq(chip->irq);
 759         flush_work(&chip->spdif_input_bits_work);
 760         flush_work(&chip->gpio_work);
 761         chip->interrupt_mask = saved_interrupt_mask;
 762         return 0;
 763 }
 764
 765 static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = {
 766         0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff,
 767         0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000
 768 };
 769 static const u32 ac97_registers_to_restore[2][0x40 / 32] = {
 770         { 0x18284fa2, 0x03060000 },
 771         { 0x00007fa6, 0x00200000 }
 772 };
 773
 774 static inline int is_bit_set(const u32 *bitmap, unsigned int bit)
 775 {
 776         return bitmap[bit / 32] & (1 << (bit & 31));
 777 }
 778
 779 static void oxygen_restore_ac97(struct oxygen *chip, unsigned int codec)
 780 {
 781         unsigned int i;
 782
 783         oxygen_write_ac97(chip, codec, AC97_RESET, 0);
 784         msleep(1);
 785         for (i = 1; i < 0x40; ++i)
 786                 if (is_bit_set(ac97_registers_to_restore[codec], i))
 787                         oxygen_write_ac97(chip, codec, i * 2,
 788                                           chip->saved_ac97_registers[codec][i]);
 789 }
 790
 791 static int oxygen_pci_resume(struct device *dev)
 792 {
 793         struct snd_card *card = dev_get_drvdata(dev);
 794         struct oxygen *chip = card->private_data;
 795         unsigned int i;
 796
 797         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 798         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 799         for (i = 0; i < OXYGEN_IO_SIZE; ++i)
 800                 if (is_bit_set(registers_to_restore, i))
 801                         oxygen_write8(chip, i, chip->saved_registers._8[i]);
 802         if (chip->has_ac97_0)
 803                 oxygen_restore_ac97(chip, 0);
 804         if (chip->has_ac97_1)
 805                 oxygen_restore_ac97(chip, 1);
 806
 807         if (chip->model.resume)
 808                 chip->model.resume(chip);
 809
 810         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 811
 812         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 813         return 0;
 814 }
 815
 816 SIMPLE_DEV_PM_OPS(oxygen_pci_pm, oxygen_pci_suspend, oxygen_pci_resume);
 817 EXPORT_SYMBOL(oxygen_pci_pm);
 818 #endif /* CONFIG_PM_SLEEP */
 819
 820 void oxygen_pci_shutdown(struct pci_dev *pci)
 821 {
 822         struct snd_card *card = pci_get_drvdata(pci);
 823         struct oxygen *chip = card->private_data;
 824
 825         oxygen_shutdown(chip);
 826         chip->model.cleanup(chip);
 827 }
 828 EXPORT_SYMBOL(oxygen_pci_shutdown);