1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * C-Media CMI8788 driver - main driver module 4 * 5 * Copyright (c) Clemens Ladisch <clemens@ladisch.de> 6 */ 7 8 #include <linux/delay.h> 9 #include <linux/interrupt.h> 10 #include <linux/mutex.h> 11 #include <linux/pci.h> 12 #include <linux/slab.h> 13 #include <linux/module.h> 14 #include <sound/ac97_codec.h> 15 #include <sound/asoundef.h> 16 #include <sound/core.h> 17 #include <sound/info.h> 18 #include <sound/mpu401.h> 19 #include <sound/pcm.h> 20 #include "oxygen.h" 21 #include "cm9780.h" 22 23 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); 24 MODULE_DESCRIPTION("C-Media CMI8788 helper library"); 25 MODULE_LICENSE("GPL v2"); 26 27 #define DRIVER "oxygen" 28 29 static inline int oxygen_uart_input_ready(struct oxygen *chip) 30 { 31 return !(oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_RX_EMPTY); 32 } 33 34 static void oxygen_read_uart(struct oxygen *chip) 35 { 36 if (unlikely(!oxygen_uart_input_ready(chip))) { 37 /* no data, but read it anyway to clear the interrupt */ 38 oxygen_read8(chip, OXYGEN_MPU401); 39 return; 40 } 41 do { 42 u8 data = oxygen_read8(chip, OXYGEN_MPU401); 43 if (data == MPU401_ACK) 44 continue; 45 if (chip->uart_input_count >= ARRAY_SIZE(chip->uart_input)) 46 chip->uart_input_count = 0; 47 chip->uart_input[chip->uart_input_count++] = data; 48 } while (oxygen_uart_input_ready(chip)); 49 if (chip->model.uart_input) 50 chip->model.uart_input(chip); 51 } 52 53 static irqreturn_t oxygen_interrupt(int dummy, void *dev_id) 54 { 55 struct oxygen *chip = dev_id; 56 unsigned int status, clear, elapsed_streams, i; 57 58 status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS); 59 if (!status) 60 return IRQ_NONE; 61 62 spin_lock(&chip->reg_lock); 63 64 clear = status & (OXYGEN_CHANNEL_A | 65 OXYGEN_CHANNEL_B | 66 OXYGEN_CHANNEL_C | 67 OXYGEN_CHANNEL_SPDIF | 68 OXYGEN_CHANNEL_MULTICH | 69 OXYGEN_CHANNEL_AC97 | 70 OXYGEN_INT_SPDIF_IN_DETECT | 71 OXYGEN_INT_GPIO | 72 OXYGEN_INT_AC97); 73 if (clear) { 74 if (clear & OXYGEN_INT_SPDIF_IN_DETECT) 75 chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT; 76 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 77 chip->interrupt_mask & ~clear); 78 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 79 chip->interrupt_mask); 80 } 81 82 elapsed_streams = status & chip->pcm_running; 83 84 spin_unlock(&chip->reg_lock); 85 86 for (i = 0; i < PCM_COUNT; ++i) 87 if ((elapsed_streams & (1 << i)) && chip->streams[i]) 88 snd_pcm_period_elapsed(chip->streams[i]); 89 90 if (status & OXYGEN_INT_SPDIF_IN_DETECT) { 91 spin_lock(&chip->reg_lock); 92 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL); 93 if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT | 94 OXYGEN_SPDIF_RATE_INT)) { 95 /* write the interrupt bit(s) to clear */ 96 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i); 97 schedule_work(&chip->spdif_input_bits_work); 98 } 99 spin_unlock(&chip->reg_lock); 100 } 101 102 if (status & OXYGEN_INT_GPIO) 103 schedule_work(&chip->gpio_work); 104 105 if (status & OXYGEN_INT_MIDI) { 106 if (chip->midi) 107 snd_mpu401_uart_interrupt(0, chip->midi->private_data); 108 else 109 oxygen_read_uart(chip); 110 } 111 112 if (status & OXYGEN_INT_AC97) 113 wake_up(&chip->ac97_waitqueue); 114 115 return IRQ_HANDLED; 116 } 117 118 static void oxygen_spdif_input_bits_changed(struct work_struct *work) 119 { 120 struct oxygen *chip = container_of(work, struct oxygen, 121 spdif_input_bits_work); 122 u32 reg; 123 124 /* 125 * This function gets called when there is new activity on the SPDIF 126 * input, or when we lose lock on the input signal, or when the rate 127 * changes. 128 */ 129 msleep(1); 130 spin_lock_irq(&chip->reg_lock); 131 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL); 132 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS | 133 OXYGEN_SPDIF_LOCK_STATUS)) 134 == OXYGEN_SPDIF_SENSE_STATUS) { 135 /* 136 * If we detect activity on the SPDIF input but cannot lock to 137 * a signal, the clock bit is likely to be wrong. 138 */ 139 reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK; 140 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg); 141 spin_unlock_irq(&chip->reg_lock); 142 msleep(1); 143 spin_lock_irq(&chip->reg_lock); 144 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL); 145 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS | 146 OXYGEN_SPDIF_LOCK_STATUS)) 147 == OXYGEN_SPDIF_SENSE_STATUS) { 148 /* nothing detected with either clock; give up */ 149 if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK) 150 == OXYGEN_SPDIF_IN_CLOCK_192) { 151 /* 152 * Reset clock to <= 96 kHz because this is 153 * more likely to be received next time. 154 */ 155 reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK; 156 reg |= OXYGEN_SPDIF_IN_CLOCK_96; 157 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg); 158 } 159 } 160 } 161 spin_unlock_irq(&chip->reg_lock); 162 163 if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) { 164 spin_lock_irq(&chip->reg_lock); 165 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT; 166 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 167 chip->interrupt_mask); 168 spin_unlock_irq(&chip->reg_lock); 169 170 /* 171 * We don't actually know that any channel status bits have 172 * changed, but let's send a notification just to be sure. 173 */ 174 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 175 &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id); 176 } 177 } 178 179 static void oxygen_gpio_changed(struct work_struct *work) 180 { 181 struct oxygen *chip = container_of(work, struct oxygen, gpio_work); 182 183 if (chip->model.gpio_changed) 184 chip->model.gpio_changed(chip); 185 } 186 187 static void oxygen_proc_read(struct snd_info_entry *entry, 188 struct snd_info_buffer *buffer) 189 { 190 struct oxygen *chip = entry->private_data; 191 int i, j; 192 193 switch (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_PACKAGE_ID_MASK) { 194 case OXYGEN_PACKAGE_ID_8786: i = '6'; break; 195 case OXYGEN_PACKAGE_ID_8787: i = '7'; break; 196 case OXYGEN_PACKAGE_ID_8788: i = '8'; break; 197 default: i = '?'; break; 198 } 199 snd_iprintf(buffer, "CMI878%c:\n", i); 200 for (i = 0; i < OXYGEN_IO_SIZE; i += 0x10) { 201 snd_iprintf(buffer, "%02x:", i); 202 for (j = 0; j < 0x10; ++j) 203 snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j)); 204 snd_iprintf(buffer, "\n"); 205 } 206 if (mutex_lock_interruptible(&chip->mutex) < 0) 207 return; 208 if (chip->has_ac97_0) { 209 snd_iprintf(buffer, "\nAC97:\n"); 210 for (i = 0; i < 0x80; i += 0x10) { 211 snd_iprintf(buffer, "%02x:", i); 212 for (j = 0; j < 0x10; j += 2) 213 snd_iprintf(buffer, " %04x", 214 oxygen_read_ac97(chip, 0, i + j)); 215 snd_iprintf(buffer, "\n"); 216 } 217 } 218 if (chip->has_ac97_1) { 219 snd_iprintf(buffer, "\nAC97 2:\n"); 220 for (i = 0; i < 0x80; i += 0x10) { 221 snd_iprintf(buffer, "%02x:", i); 222 for (j = 0; j < 0x10; j += 2) 223 snd_iprintf(buffer, " %04x", 224 oxygen_read_ac97(chip, 1, i + j)); 225 snd_iprintf(buffer, "\n"); 226 } 227 } 228 mutex_unlock(&chip->mutex); 229 if (chip->model.dump_registers) 230 chip->model.dump_registers(chip, buffer); 231 } 232 233 static void oxygen_proc_init(struct oxygen *chip) 234 { 235 snd_card_ro_proc_new(chip->card, "oxygen", chip, oxygen_proc_read); 236 } 237 238 static const struct pci_device_id * 239 oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[]) 240 { 241 u16 subdevice; 242 243 /* 244 * Make sure the EEPROM pins are available, i.e., not used for SPI. 245 * (This function is called before we initialize or use SPI.) 246 */ 247 oxygen_clear_bits8(chip, OXYGEN_FUNCTION, 248 OXYGEN_FUNCTION_ENABLE_SPI_4_5); 249 /* 250 * Read the subsystem device ID directly from the EEPROM, because the 251 * chip didn't if the first EEPROM word was overwritten. 252 */ 253 subdevice = oxygen_read_eeprom(chip, 2); 254 /* use default ID if EEPROM is missing */ 255 if (subdevice == 0xffff && oxygen_read_eeprom(chip, 1) == 0xffff) 256 subdevice = 0x8788; 257 /* 258 * We use only the subsystem device ID for searching because it is 259 * unique even without the subsystem vendor ID, which may have been 260 * overwritten in the EEPROM. 261 */ 262 for (; ids->vendor; ++ids) 263 if (ids->subdevice == subdevice && 264 ids->driver_data != BROKEN_EEPROM_DRIVER_DATA) 265 return ids; 266 return NULL; 267 } 268 269 static void oxygen_restore_eeprom(struct oxygen *chip, 270 const struct pci_device_id *id) 271 { 272 u16 eeprom_id; 273 274 eeprom_id = oxygen_read_eeprom(chip, 0); 275 if (eeprom_id != OXYGEN_EEPROM_ID && 276 (eeprom_id != 0xffff || id->subdevice != 0x8788)) { 277 /* 278 * This function gets called only when a known card model has 279 * been detected, i.e., we know there is a valid subsystem 280 * product ID at index 2 in the EEPROM. Therefore, we have 281 * been able to deduce the correct subsystem vendor ID, and 282 * this is enough information to restore the original EEPROM 283 * contents. 284 */ 285 oxygen_write_eeprom(chip, 1, id->subvendor); 286 oxygen_write_eeprom(chip, 0, OXYGEN_EEPROM_ID); 287 288 oxygen_set_bits8(chip, OXYGEN_MISC, 289 OXYGEN_MISC_WRITE_PCI_SUBID); 290 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, 291 id->subvendor); 292 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_ID, 293 id->subdevice); 294 oxygen_clear_bits8(chip, OXYGEN_MISC, 295 OXYGEN_MISC_WRITE_PCI_SUBID); 296 297 dev_info(chip->card->dev, "EEPROM ID restored\n"); 298 } 299 } 300 301 static void configure_pcie_bridge(struct pci_dev *pci) 302 { 303 enum { PEX811X, PI7C9X110, XIO2001 }; 304 static const struct pci_device_id bridge_ids[] = { 305 { PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X }, 306 { PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X }, 307 { PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 }, 308 { PCI_VDEVICE(TI, 0x8240), .driver_data = XIO2001 }, 309 { } 310 }; 311 struct pci_dev *bridge; 312 const struct pci_device_id *id; 313 u32 tmp; 314 315 if (!pci->bus || !pci->bus->self) 316 return; 317 bridge = pci->bus->self; 318 319 id = pci_match_id(bridge_ids, bridge); 320 if (!id) 321 return; 322 323 switch (id->driver_data) { 324 case PEX811X: /* PLX PEX8111/PEX8112 PCIe/PCI bridge */ 325 pci_read_config_dword(bridge, 0x48, &tmp); 326 tmp |= 1; /* enable blind prefetching */ 327 tmp |= 1 << 11; /* enable beacon generation */ 328 pci_write_config_dword(bridge, 0x48, tmp); 329 330 pci_write_config_dword(bridge, 0x84, 0x0c); 331 pci_read_config_dword(bridge, 0x88, &tmp); 332 tmp &= ~(7 << 27); 333 tmp |= 2 << 27; /* set prefetch size to 128 bytes */ 334 pci_write_config_dword(bridge, 0x88, tmp); 335 break; 336 337 case PI7C9X110: /* Pericom PI7C9X110 PCIe/PCI bridge */ 338 pci_read_config_dword(bridge, 0x40, &tmp); 339 tmp |= 1; /* park the PCI arbiter to the sound chip */ 340 pci_write_config_dword(bridge, 0x40, tmp); 341 break; 342 343 case XIO2001: /* Texas Instruments XIO2001 PCIe/PCI bridge */ 344 pci_read_config_dword(bridge, 0xe8, &tmp); 345 tmp &= ~0xf; /* request length limit: 64 bytes */ 346 tmp &= ~(0xf << 8); 347 tmp |= 1 << 8; /* request count limit: one buffer */ 348 pci_write_config_dword(bridge, 0xe8, tmp); 349 break; 350 } 351 } 352 353 static void oxygen_init(struct oxygen *chip) 354 { 355 unsigned int i; 356 357 chip->dac_routing = 1; 358 for (i = 0; i < 8; ++i) 359 chip->dac_volume[i] = chip->model.dac_volume_min; 360 chip->dac_mute = 1; 361 chip->spdif_playback_enable = 0; 362 chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL | 363 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT); 364 chip->spdif_pcm_bits = chip->spdif_bits; 365 366 if (!(oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)) 367 oxygen_set_bits8(chip, OXYGEN_MISC, 368 OXYGEN_MISC_PCI_MEM_W_1_CLOCK); 369 370 i = oxygen_read16(chip, OXYGEN_AC97_CONTROL); 371 chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0; 372 chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0; 373 374 oxygen_write8_masked(chip, OXYGEN_FUNCTION, 375 OXYGEN_FUNCTION_RESET_CODEC | 376 chip->model.function_flags, 377 OXYGEN_FUNCTION_RESET_CODEC | 378 OXYGEN_FUNCTION_2WIRE_SPI_MASK | 379 OXYGEN_FUNCTION_ENABLE_SPI_4_5); 380 oxygen_write8(chip, OXYGEN_DMA_STATUS, 0); 381 oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0); 382 oxygen_write8(chip, OXYGEN_PLAY_CHANNELS, 383 OXYGEN_PLAY_CHANNELS_2 | 384 OXYGEN_DMA_A_BURST_8 | 385 OXYGEN_DMA_MULTICH_BURST_8); 386 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); 387 oxygen_write8_masked(chip, OXYGEN_MISC, 388 chip->model.misc_flags, 389 OXYGEN_MISC_WRITE_PCI_SUBID | 390 OXYGEN_MISC_REC_C_FROM_SPDIF | 391 OXYGEN_MISC_REC_B_FROM_AC97 | 392 OXYGEN_MISC_REC_A_FROM_MULTICH | 393 OXYGEN_MISC_MIDI); 394 oxygen_write8(chip, OXYGEN_REC_FORMAT, 395 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) | 396 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) | 397 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT)); 398 oxygen_write8(chip, OXYGEN_PLAY_FORMAT, 399 (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) | 400 (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT)); 401 oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2); 402 oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT, 403 OXYGEN_RATE_48000 | 404 chip->model.dac_i2s_format | 405 OXYGEN_I2S_MCLK(chip->model.dac_mclks) | 406 OXYGEN_I2S_BITS_16 | 407 OXYGEN_I2S_MASTER | 408 OXYGEN_I2S_BCLK_64); 409 if (chip->model.device_config & CAPTURE_0_FROM_I2S_1) 410 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 411 OXYGEN_RATE_48000 | 412 chip->model.adc_i2s_format | 413 OXYGEN_I2S_MCLK(chip->model.adc_mclks) | 414 OXYGEN_I2S_BITS_16 | 415 OXYGEN_I2S_MASTER | 416 OXYGEN_I2S_BCLK_64); 417 else 418 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 419 OXYGEN_I2S_MASTER | 420 OXYGEN_I2S_MUTE_MCLK); 421 if (chip->model.device_config & (CAPTURE_0_FROM_I2S_2 | 422 CAPTURE_2_FROM_I2S_2)) 423 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 424 OXYGEN_RATE_48000 | 425 chip->model.adc_i2s_format | 426 OXYGEN_I2S_MCLK(chip->model.adc_mclks) | 427 OXYGEN_I2S_BITS_16 | 428 OXYGEN_I2S_MASTER | 429 OXYGEN_I2S_BCLK_64); 430 else 431 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 432 OXYGEN_I2S_MASTER | 433 OXYGEN_I2S_MUTE_MCLK); 434 if (chip->model.device_config & CAPTURE_3_FROM_I2S_3) 435 oxygen_write16(chip, OXYGEN_I2S_C_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_C_FORMAT, 444 OXYGEN_I2S_MASTER | 445 OXYGEN_I2S_MUTE_MCLK); 446 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, 447 OXYGEN_SPDIF_OUT_ENABLE | 448 OXYGEN_SPDIF_LOOPBACK); 449 if (chip->model.device_config & CAPTURE_1_FROM_SPDIF) 450 oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL, 451 OXYGEN_SPDIF_SENSE_MASK | 452 OXYGEN_SPDIF_LOCK_MASK | 453 OXYGEN_SPDIF_RATE_MASK | 454 OXYGEN_SPDIF_LOCK_PAR | 455 OXYGEN_SPDIF_IN_CLOCK_96, 456 OXYGEN_SPDIF_SENSE_MASK | 457 OXYGEN_SPDIF_LOCK_MASK | 458 OXYGEN_SPDIF_RATE_MASK | 459 OXYGEN_SPDIF_SENSE_PAR | 460 OXYGEN_SPDIF_LOCK_PAR | 461 OXYGEN_SPDIF_IN_CLOCK_MASK); 462 else 463 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, 464 OXYGEN_SPDIF_SENSE_MASK | 465 OXYGEN_SPDIF_LOCK_MASK | 466 OXYGEN_SPDIF_RATE_MASK); 467 oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits); 468 oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS, 469 OXYGEN_2WIRE_LENGTH_8 | 470 OXYGEN_2WIRE_INTERRUPT_MASK | 471 OXYGEN_2WIRE_SPEED_STANDARD); 472 oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK); 473 oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0); 474 oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0); 475 oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 476 OXYGEN_PLAY_MULTICH_I2S_DAC | 477 OXYGEN_PLAY_SPDIF_SPDIF | 478 (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) | 479 (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) | 480 (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) | 481 (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT)); 482 oxygen_write8(chip, OXYGEN_REC_ROUTING, 483 OXYGEN_REC_A_ROUTE_I2S_ADC_1 | 484 OXYGEN_REC_B_ROUTE_I2S_ADC_2 | 485 OXYGEN_REC_C_ROUTE_SPDIF); 486 oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0); 487 oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 488 (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) | 489 (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) | 490 (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) | 491 (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT)); 492 493 if (chip->has_ac97_0 | chip->has_ac97_1) 494 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 495 OXYGEN_AC97_INT_READ_DONE | 496 OXYGEN_AC97_INT_WRITE_DONE); 497 else 498 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0); 499 oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0); 500 oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0); 501 if (!(chip->has_ac97_0 | chip->has_ac97_1)) 502 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL, 503 OXYGEN_AC97_CLOCK_DISABLE); 504 if (!chip->has_ac97_0) { 505 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL, 506 OXYGEN_AC97_NO_CODEC_0); 507 } else { 508 oxygen_write_ac97(chip, 0, AC97_RESET, 0); 509 msleep(1); 510 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP, 511 CM9780_GPIO0IO | CM9780_GPIO1IO); 512 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER, 513 CM9780_BSTSEL | CM9780_STRO_MIC | 514 CM9780_MIX2FR | CM9780_PCBSW); 515 oxygen_ac97_set_bits(chip, 0, CM9780_JACK, 516 CM9780_RSOE | CM9780_CBOE | 517 CM9780_SSOE | CM9780_FROE | 518 CM9780_MIC2MIC | CM9780_LI2LI); 519 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000); 520 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000); 521 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808); 522 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808); 523 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808); 524 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808); 525 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808); 526 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000); 527 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080); 528 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080); 529 oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS, 530 CM9780_GPO0); 531 /* power down unused ADCs and DACs */ 532 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN, 533 AC97_PD_PR0 | AC97_PD_PR1); 534 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS, 535 AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK); 536 } 537 if (chip->has_ac97_1) { 538 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG, 539 OXYGEN_AC97_CODEC1_SLOT3 | 540 OXYGEN_AC97_CODEC1_SLOT4); 541 oxygen_write_ac97(chip, 1, AC97_RESET, 0); 542 msleep(1); 543 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000); 544 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000); 545 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000); 546 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808); 547 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808); 548 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808); 549 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808); 550 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808); 551 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808); 552 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000); 553 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000); 554 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040); 555 } 556 } 557 558 static void oxygen_shutdown(struct oxygen *chip) 559 { 560 spin_lock_irq(&chip->reg_lock); 561 chip->interrupt_mask = 0; 562 chip->pcm_running = 0; 563 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0); 564 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); 565 spin_unlock_irq(&chip->reg_lock); 566 } 567 568 static void oxygen_card_free(struct snd_card *card) 569 { 570 struct oxygen *chip = card->private_data; 571 572 oxygen_shutdown(chip); 573 if (chip->irq >= 0) 574 free_irq(chip->irq, chip); 575 flush_work(&chip->spdif_input_bits_work); 576 flush_work(&chip->gpio_work); 577 chip->model.cleanup(chip); 578 kfree(chip->model_data); 579 mutex_destroy(&chip->mutex); 580 pci_release_regions(chip->pci); 581 pci_disable_device(chip->pci); 582 } 583 584 int oxygen_pci_probe(struct pci_dev *pci, int index, char *id, 585 struct module *owner, 586 const struct pci_device_id *ids, 587 int (*get_model)(struct oxygen *chip, 588 const struct pci_device_id *id 589 ) 590 ) 591 { 592 struct snd_card *card; 593 struct oxygen *chip; 594 const struct pci_device_id *pci_id; 595 int err; 596 597 err = snd_card_new(&pci->dev, index, id, owner, 598 sizeof(*chip), &card); 599 if (err < 0) 600 return err; 601 602 chip = card->private_data; 603 chip->card = card; 604 chip->pci = pci; 605 chip->irq = -1; 606 spin_lock_init(&chip->reg_lock); 607 mutex_init(&chip->mutex); 608 INIT_WORK(&chip->spdif_input_bits_work, 609 oxygen_spdif_input_bits_changed); 610 INIT_WORK(&chip->gpio_work, oxygen_gpio_changed); 611 init_waitqueue_head(&chip->ac97_waitqueue); 612 613 err = pci_enable_device(pci); 614 if (err < 0) 615 goto err_card; 616 617 err = pci_request_regions(pci, DRIVER); 618 if (err < 0) { 619 dev_err(card->dev, "cannot reserve PCI resources\n"); 620 goto err_pci_enable; 621 } 622 623 if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) || 624 pci_resource_len(pci, 0) < OXYGEN_IO_SIZE) { 625 dev_err(card->dev, "invalid PCI I/O range\n"); 626 err = -ENXIO; 627 goto err_pci_regions; 628 } 629 chip->addr = pci_resource_start(pci, 0); 630 631 pci_id = oxygen_search_pci_id(chip, ids); 632 if (!pci_id) { 633 err = -ENODEV; 634 goto err_pci_regions; 635 } 636 oxygen_restore_eeprom(chip, pci_id); 637 err = get_model(chip, pci_id); 638 if (err < 0) 639 goto err_pci_regions; 640 641 if (chip->model.model_data_size) { 642 chip->model_data = kzalloc(chip->model.model_data_size, 643 GFP_KERNEL); 644 if (!chip->model_data) { 645 err = -ENOMEM; 646 goto err_pci_regions; 647 } 648 } 649 650 pci_set_master(pci); 651 card->private_free = oxygen_card_free; 652 653 configure_pcie_bridge(pci); 654 oxygen_init(chip); 655 chip->model.init(chip); 656 657 err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED, 658 KBUILD_MODNAME, chip); 659 if (err < 0) { 660 dev_err(card->dev, "cannot grab interrupt %d\n", pci->irq); 661 goto err_card; 662 } 663 chip->irq = pci->irq; 664 665 strcpy(card->driver, chip->model.chip); 666 strcpy(card->shortname, chip->model.shortname); 667 sprintf(card->longname, "%s at %#lx, irq %i", 668 chip->model.longname, chip->addr, chip->irq); 669 strcpy(card->mixername, chip->model.chip); 670 snd_component_add(card, chip->model.chip); 671 672 err = oxygen_pcm_init(chip); 673 if (err < 0) 674 goto err_card; 675 676 err = oxygen_mixer_init(chip); 677 if (err < 0) 678 goto err_card; 679 680 if (chip->model.device_config & (MIDI_OUTPUT | MIDI_INPUT)) { 681 unsigned int info_flags = 682 MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK; 683 if (chip->model.device_config & MIDI_OUTPUT) 684 info_flags |= MPU401_INFO_OUTPUT; 685 if (chip->model.device_config & MIDI_INPUT) 686 info_flags |= MPU401_INFO_INPUT; 687 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI, 688 chip->addr + OXYGEN_MPU401, 689 info_flags, -1, &chip->midi); 690 if (err < 0) 691 goto err_card; 692 } 693 694 oxygen_proc_init(chip); 695 696 spin_lock_irq(&chip->reg_lock); 697 if (chip->model.device_config & CAPTURE_1_FROM_SPDIF) 698 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT; 699 if (chip->has_ac97_0 | chip->has_ac97_1) 700 chip->interrupt_mask |= OXYGEN_INT_AC97; 701 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask); 702 spin_unlock_irq(&chip->reg_lock); 703 704 err = snd_card_register(card); 705 if (err < 0) 706 goto err_card; 707 708 pci_set_drvdata(pci, card); 709 return 0; 710 711 err_pci_regions: 712 pci_release_regions(pci); 713 err_pci_enable: 714 pci_disable_device(pci); 715 err_card: 716 snd_card_free(card); 717 return err; 718 } 719 EXPORT_SYMBOL(oxygen_pci_probe); 720 721 void oxygen_pci_remove(struct pci_dev *pci) 722 { 723 snd_card_free(pci_get_drvdata(pci)); 724 } 725 EXPORT_SYMBOL(oxygen_pci_remove); 726 727 #ifdef CONFIG_PM_SLEEP 728 static int oxygen_pci_suspend(struct device *dev) 729 { 730 struct snd_card *card = dev_get_drvdata(dev); 731 struct oxygen *chip = card->private_data; 732 unsigned int saved_interrupt_mask; 733 734 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 735 736 if (chip->model.suspend) 737 chip->model.suspend(chip); 738 739 spin_lock_irq(&chip->reg_lock); 740 saved_interrupt_mask = chip->interrupt_mask; 741 chip->interrupt_mask = 0; 742 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0); 743 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); 744 spin_unlock_irq(&chip->reg_lock); 745 746 synchronize_irq(chip->irq); 747 flush_work(&chip->spdif_input_bits_work); 748 flush_work(&chip->gpio_work); 749 chip->interrupt_mask = saved_interrupt_mask; 750 return 0; 751 } 752 753 static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = { 754 0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff, 755 0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000 756 }; 757 static const u32 ac97_registers_to_restore[2][0x40 / 32] = { 758 { 0x18284fa2, 0x03060000 }, 759 { 0x00007fa6, 0x00200000 } 760 }; 761 762 static inline int is_bit_set(const u32 *bitmap, unsigned int bit) 763 { 764 return bitmap[bit / 32] & (1 << (bit & 31)); 765 } 766 767 static void oxygen_restore_ac97(struct oxygen *chip, unsigned int codec) 768 { 769 unsigned int i; 770 771 oxygen_write_ac97(chip, codec, AC97_RESET, 0); 772 msleep(1); 773 for (i = 1; i < 0x40; ++i) 774 if (is_bit_set(ac97_registers_to_restore[codec], i)) 775 oxygen_write_ac97(chip, codec, i * 2, 776 chip->saved_ac97_registers[codec][i]); 777 } 778 779 static int oxygen_pci_resume(struct device *dev) 780 { 781 struct snd_card *card = dev_get_drvdata(dev); 782 struct oxygen *chip = card->private_data; 783 unsigned int i; 784 785 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0); 786 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); 787 for (i = 0; i < OXYGEN_IO_SIZE; ++i) 788 if (is_bit_set(registers_to_restore, i)) 789 oxygen_write8(chip, i, chip->saved_registers._8[i]); 790 if (chip->has_ac97_0) 791 oxygen_restore_ac97(chip, 0); 792 if (chip->has_ac97_1) 793 oxygen_restore_ac97(chip, 1); 794 795 if (chip->model.resume) 796 chip->model.resume(chip); 797 798 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask); 799 800 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 801 return 0; 802 } 803 804 SIMPLE_DEV_PM_OPS(oxygen_pci_pm, oxygen_pci_suspend, oxygen_pci_resume); 805 EXPORT_SYMBOL(oxygen_pci_pm); 806 #endif /* CONFIG_PM_SLEEP */ 807 808 void oxygen_pci_shutdown(struct pci_dev *pci) 809 { 810 struct snd_card *card = pci_get_drvdata(pci); 811 struct oxygen *chip = card->private_data; 812 813 oxygen_shutdown(chip); 814 chip->model.cleanup(chip); 815 } 816 EXPORT_SYMBOL(oxygen_pci_shutdown); 817