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oxygen_lib.c
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linux-6.19.14/sound/pci/oxygen/oxygen_lib.c
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 23MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); 24MODULE_DESCRIPTION("C-Media CMI8788 helper library"); 25MODULE_LICENSE("GPL v2"); 26 27#define DRIVER "oxygen" 28 29static inline int oxygen_uart_input_ready(struct oxygen *chip) 30{ 31 return !(oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_RX_EMPTY); 32} 33 34static 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 53static 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 scoped_guard(spinlock, &chip->reg_lock) { 63 clear = status & (OXYGEN_CHANNEL_A | 64 OXYGEN_CHANNEL_B | 65 OXYGEN_CHANNEL_C | 66 OXYGEN_CHANNEL_SPDIF | 67 OXYGEN_CHANNEL_MULTICH | 68 OXYGEN_CHANNEL_AC97 | 69 OXYGEN_INT_SPDIF_IN_DETECT | 70 OXYGEN_INT_GPIO | 71 OXYGEN_INT_AC97); 72 if (clear) { 73 if (clear & OXYGEN_INT_SPDIF_IN_DETECT) 74 chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT; 75 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 76 chip->interrupt_mask & ~clear); 77 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 78 chip->interrupt_mask); 79 } 80 81 elapsed_streams = status & chip->pcm_running; 82 } 83 84 for (i = 0; i < PCM_COUNT; ++i) 85 if ((elapsed_streams & (1 << i)) && chip->streams[i]) 86 snd_pcm_period_elapsed(chip->streams[i]); 87 88 if (status & OXYGEN_INT_SPDIF_IN_DETECT) { 89 guard(spinlock)(&chip->reg_lock); 90 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL); 91 if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT | 92 OXYGEN_SPDIF_RATE_INT)) { 93 /* write the interrupt bit(s) to clear */ 94 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i); 95 schedule_work(&chip->spdif_input_bits_work); 96 } 97 } 98 99 if (status & OXYGEN_INT_GPIO) 100 schedule_work(&chip->gpio_work); 101 102 if (status & OXYGEN_INT_MIDI) { 103 if (chip->midi) 104 snd_mpu401_uart_interrupt(0, chip->midi->private_data); 105 else 106 oxygen_read_uart(chip); 107 } 108 109 if (status & OXYGEN_INT_AC97) 110 wake_up(&chip->ac97_waitqueue); 111 112 return IRQ_HANDLED; 113} 114 115static void oxygen_spdif_input_bits_changed(struct work_struct *work) 116{ 117 struct oxygen *chip = container_of(work, struct oxygen, 118 spdif_input_bits_work); 119 u32 reg; 120 121 /* 122 * This function gets called when there is new activity on the SPDIF 123 * input, or when we lose lock on the input signal, or when the rate 124 * changes. 125 */ 126 msleep(1); 127 scoped_guard(spinlock_irq, &chip->reg_lock) { 128 reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL); 129 if ((reg & (OXYGEN_SPDIF_SENSE_STATUS | 130 OXYGEN_SPDIF_LOCK_STATUS)) 131 == OXYGEN_SPDIF_SENSE_STATUS) { 132 /* 133 * If we detect activity on the SPDIF input but cannot lock to 134 * a signal, the clock bit is likely to be wrong. 135 */ 136 reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK; 137 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg); 138 spin_unlock_irq(&chip->reg_lock); 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 /* nothing detected with either clock; give up */ 146 if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK) 147 == OXYGEN_SPDIF_IN_CLOCK_192) { 148 /* 149 * Reset clock to <= 96 kHz because this is 150 * more likely to be received next time. 151 */ 152 reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK; 153 reg |= OXYGEN_SPDIF_IN_CLOCK_96; 154 oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg); 155 } 156 } 157 } 158 } 159 160 if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) { 161 scoped_guard(spinlock_irq, &chip->reg_lock) { 162 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT; 163 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 164 chip->interrupt_mask); 165 } 166 167 /* 168 * We don't actually know that any channel status bits have 169 * changed, but let's send a notification just to be sure. 170 */ 171 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 172 &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id); 173 } 174} 175 176static void oxygen_gpio_changed(struct work_struct *work) 177{ 178 struct oxygen *chip = container_of(work, struct oxygen, gpio_work); 179 180 if (chip->model.gpio_changed) 181 chip->model.gpio_changed(chip); 182} 183 184static void oxygen_proc_read(struct snd_info_entry *entry, 185 struct snd_info_buffer *buffer) 186{ 187 struct oxygen *chip = entry->private_data; 188 int i, j; 189 190 switch (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_PACKAGE_ID_MASK) { 191 case OXYGEN_PACKAGE_ID_8786: i = '6'; break; 192 case OXYGEN_PACKAGE_ID_8787: i = '7'; break; 193 case OXYGEN_PACKAGE_ID_8788: i = '8'; break; 194 default: i = '?'; break; 195 } 196 snd_iprintf(buffer, "CMI878%c:\n", i); 197 for (i = 0; i < OXYGEN_IO_SIZE; i += 0x10) { 198 snd_iprintf(buffer, "%02x:", i); 199 for (j = 0; j < 0x10; ++j) 200 snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j)); 201 snd_iprintf(buffer, "\n"); 202 } 203 if (mutex_lock_interruptible(&chip->mutex) < 0) 204 return; 205 if (chip->has_ac97_0) { 206 snd_iprintf(buffer, "\nAC97:\n"); 207 for (i = 0; i < 0x80; i += 0x10) { 208 snd_iprintf(buffer, "%02x:", i); 209 for (j = 0; j < 0x10; j += 2) 210 snd_iprintf(buffer, " %04x", 211 oxygen_read_ac97(chip, 0, i + j)); 212 snd_iprintf(buffer, "\n"); 213 } 214 } 215 if (chip->has_ac97_1) { 216 snd_iprintf(buffer, "\nAC97 2:\n"); 217 for (i = 0; i < 0x80; i += 0x10) { 218 snd_iprintf(buffer, "%02x:", i); 219 for (j = 0; j < 0x10; j += 2) 220 snd_iprintf(buffer, " %04x", 221 oxygen_read_ac97(chip, 1, i + j)); 222 snd_iprintf(buffer, "\n"); 223 } 224 } 225 mutex_unlock(&chip->mutex); 226 if (chip->model.dump_registers) 227 chip->model.dump_registers(chip, buffer); 228} 229 230static void oxygen_proc_init(struct oxygen *chip) 231{ 232 snd_card_ro_proc_new(chip->card, "oxygen", chip, oxygen_proc_read); 233} 234 235static const struct pci_device_id * 236oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[]) 237{ 238 u16 subdevice; 239 240 /* 241 * Make sure the EEPROM pins are available, i.e., not used for SPI. 242 * (This function is called before we initialize or use SPI.) 243 */ 244 oxygen_clear_bits8(chip, OXYGEN_FUNCTION, 245 OXYGEN_FUNCTION_ENABLE_SPI_4_5); 246 /* 247 * Read the subsystem device ID directly from the EEPROM, because the 248 * chip didn't if the first EEPROM word was overwritten. 249 */ 250 subdevice = oxygen_read_eeprom(chip, 2); 251 /* use default ID if EEPROM is missing */ 252 if (subdevice == 0xffff && oxygen_read_eeprom(chip, 1) == 0xffff) 253 subdevice = 0x8788; 254 /* 255 * We use only the subsystem device ID for searching because it is 256 * unique even without the subsystem vendor ID, which may have been 257 * overwritten in the EEPROM. 258 */ 259 for (; ids->vendor; ++ids) 260 if (ids->subdevice == subdevice && 261 ids->driver_data != BROKEN_EEPROM_DRIVER_DATA) 262 return ids; 263 return NULL; 264} 265 266static void oxygen_restore_eeprom(struct oxygen *chip, 267 const struct pci_device_id *id) 268{ 269 u16 eeprom_id; 270 271 eeprom_id = oxygen_read_eeprom(chip, 0); 272 if (eeprom_id != OXYGEN_EEPROM_ID && 273 (eeprom_id != 0xffff || id->subdevice != 0x8788)) { 274 /* 275 * This function gets called only when a known card model has 276 * been detected, i.e., we know there is a valid subsystem 277 * product ID at index 2 in the EEPROM. Therefore, we have 278 * been able to deduce the correct subsystem vendor ID, and 279 * this is enough information to restore the original EEPROM 280 * contents. 281 */ 282 oxygen_write_eeprom(chip, 1, id->subvendor); 283 oxygen_write_eeprom(chip, 0, OXYGEN_EEPROM_ID); 284 285 oxygen_set_bits8(chip, OXYGEN_MISC, 286 OXYGEN_MISC_WRITE_PCI_SUBID); 287 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, 288 id->subvendor); 289 pci_write_config_word(chip->pci, PCI_SUBSYSTEM_ID, 290 id->subdevice); 291 oxygen_clear_bits8(chip, OXYGEN_MISC, 292 OXYGEN_MISC_WRITE_PCI_SUBID); 293 294 dev_info(chip->card->dev, "EEPROM ID restored\n"); 295 } 296} 297 298static void configure_pcie_bridge(struct pci_dev *pci) 299{ 300 enum { PEX811X, PI7C9X110, XIO2001 }; 301 static const struct pci_device_id bridge_ids[] = { 302 { PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X }, 303 { PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X }, 304 { PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 }, 305 { PCI_VDEVICE(TI, 0x8240), .driver_data = XIO2001 }, 306 { } 307 }; 308 struct pci_dev *bridge; 309 const struct pci_device_id *id; 310 u32 tmp; 311 312 if (!pci->bus || !pci->bus->self) 313 return; 314 bridge = pci->bus->self; 315 316 id = pci_match_id(bridge_ids, bridge); 317 if (!id) 318 return; 319 320 switch (id->driver_data) { 321 case PEX811X: /* PLX PEX8111/PEX8112 PCIe/PCI bridge */ 322 pci_read_config_dword(bridge, 0x48, &tmp); 323 tmp |= 1; /* enable blind prefetching */ 324 tmp |= 1 << 11; /* enable beacon generation */ 325 pci_write_config_dword(bridge, 0x48, tmp); 326 327 pci_write_config_dword(bridge, 0x84, 0x0c); 328 pci_read_config_dword(bridge, 0x88, &tmp); 329 tmp &= ~(7 << 27); 330 tmp |= 2 << 27; /* set prefetch size to 128 bytes */ 331 pci_write_config_dword(bridge, 0x88, tmp); 332 break; 333 334 case PI7C9X110: /* Pericom PI7C9X110 PCIe/PCI bridge */ 335 pci_read_config_dword(bridge, 0x40, &tmp); 336 tmp |= 1; /* park the PCI arbiter to the sound chip */ 337 pci_write_config_dword(bridge, 0x40, tmp); 338 break; 339 340 case XIO2001: /* Texas Instruments XIO2001 PCIe/PCI bridge */ 341 pci_read_config_dword(bridge, 0xe8, &tmp); 342 tmp &= ~0xf; /* request length limit: 64 bytes */ 343 tmp &= ~(0xf << 8); 344 tmp |= 1 << 8; /* request count limit: one buffer */ 345 pci_write_config_dword(bridge, 0xe8, tmp); 346 break; 347 } 348} 349 350static void oxygen_init(struct oxygen *chip) 351{ 352 unsigned int i; 353 354 chip->dac_routing = 1; 355 for (i = 0; i < 8; ++i) 356 chip->dac_volume[i] = chip->model.dac_volume_min; 357 chip->dac_mute = 1; 358 chip->spdif_playback_enable = 0; 359 chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL | 360 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT); 361 chip->spdif_pcm_bits = chip->spdif_bits; 362 363 if (!(oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)) 364 oxygen_set_bits8(chip, OXYGEN_MISC, 365 OXYGEN_MISC_PCI_MEM_W_1_CLOCK); 366 367 i = oxygen_read16(chip, OXYGEN_AC97_CONTROL); 368 chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0; 369 chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0; 370 371 oxygen_write8_masked(chip, OXYGEN_FUNCTION, 372 OXYGEN_FUNCTION_RESET_CODEC | 373 chip->model.function_flags, 374 OXYGEN_FUNCTION_RESET_CODEC | 375 OXYGEN_FUNCTION_2WIRE_SPI_MASK | 376 OXYGEN_FUNCTION_ENABLE_SPI_4_5); 377 oxygen_write8(chip, OXYGEN_DMA_STATUS, 0); 378 oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0); 379 oxygen_write8(chip, OXYGEN_PLAY_CHANNELS, 380 OXYGEN_PLAY_CHANNELS_2 | 381 OXYGEN_DMA_A_BURST_8 | 382 OXYGEN_DMA_MULTICH_BURST_8); 383 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); 384 oxygen_write8_masked(chip, OXYGEN_MISC, 385 chip->model.misc_flags, 386 OXYGEN_MISC_WRITE_PCI_SUBID | 387 OXYGEN_MISC_REC_C_FROM_SPDIF | 388 OXYGEN_MISC_REC_B_FROM_AC97 | 389 OXYGEN_MISC_REC_A_FROM_MULTICH | 390 OXYGEN_MISC_MIDI); 391 oxygen_write8(chip, OXYGEN_REC_FORMAT, 392 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) | 393 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) | 394 (OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT)); 395 oxygen_write8(chip, OXYGEN_PLAY_FORMAT, 396 (OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) | 397 (OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT)); 398 oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2); 399 oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT, 400 OXYGEN_RATE_48000 | 401 chip->model.dac_i2s_format | 402 OXYGEN_I2S_MCLK(chip->model.dac_mclks) | 403 OXYGEN_I2S_BITS_16 | 404 OXYGEN_I2S_MASTER | 405 OXYGEN_I2S_BCLK_64); 406 if (chip->model.device_config & CAPTURE_0_FROM_I2S_1) 407 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 408 OXYGEN_RATE_48000 | 409 chip->model.adc_i2s_format | 410 OXYGEN_I2S_MCLK(chip->model.adc_mclks) | 411 OXYGEN_I2S_BITS_16 | 412 OXYGEN_I2S_MASTER | 413 OXYGEN_I2S_BCLK_64); 414 else 415 oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 416 OXYGEN_I2S_MASTER | 417 OXYGEN_I2S_MUTE_MCLK); 418 if (chip->model.device_config & (CAPTURE_0_FROM_I2S_2 | 419 CAPTURE_2_FROM_I2S_2)) 420 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 421 OXYGEN_RATE_48000 | 422 chip->model.adc_i2s_format | 423 OXYGEN_I2S_MCLK(chip->model.adc_mclks) | 424 OXYGEN_I2S_BITS_16 | 425 OXYGEN_I2S_MASTER | 426 OXYGEN_I2S_BCLK_64); 427 else 428 oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 429 OXYGEN_I2S_MASTER | 430 OXYGEN_I2S_MUTE_MCLK); 431 if (chip->model.device_config & CAPTURE_3_FROM_I2S_3) 432 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 433 OXYGEN_RATE_48000 | 434 chip->model.adc_i2s_format | 435 OXYGEN_I2S_MCLK(chip->model.adc_mclks) | 436 OXYGEN_I2S_BITS_16 | 437 OXYGEN_I2S_MASTER | 438 OXYGEN_I2S_BCLK_64); 439 else 440 oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 441 OXYGEN_I2S_MASTER | 442 OXYGEN_I2S_MUTE_MCLK); 443 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, 444 OXYGEN_SPDIF_OUT_ENABLE | 445 OXYGEN_SPDIF_LOOPBACK); 446 if (chip->model.device_config & CAPTURE_1_FROM_SPDIF) 447 oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL, 448 OXYGEN_SPDIF_SENSE_MASK | 449 OXYGEN_SPDIF_LOCK_MASK | 450 OXYGEN_SPDIF_RATE_MASK | 451 OXYGEN_SPDIF_LOCK_PAR | 452 OXYGEN_SPDIF_IN_CLOCK_96, 453 OXYGEN_SPDIF_SENSE_MASK | 454 OXYGEN_SPDIF_LOCK_MASK | 455 OXYGEN_SPDIF_RATE_MASK | 456 OXYGEN_SPDIF_SENSE_PAR | 457 OXYGEN_SPDIF_LOCK_PAR | 458 OXYGEN_SPDIF_IN_CLOCK_MASK); 459 else 460 oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, 461 OXYGEN_SPDIF_SENSE_MASK | 462 OXYGEN_SPDIF_LOCK_MASK | 463 OXYGEN_SPDIF_RATE_MASK); 464 oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits); 465 oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS, 466 OXYGEN_2WIRE_LENGTH_8 | 467 OXYGEN_2WIRE_INTERRUPT_MASK | 468 OXYGEN_2WIRE_SPEED_STANDARD); 469 oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK); 470 oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0); 471 oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0); 472 oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 473 OXYGEN_PLAY_MULTICH_I2S_DAC | 474 OXYGEN_PLAY_SPDIF_SPDIF | 475 (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) | 476 (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) | 477 (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) | 478 (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT)); 479 oxygen_write8(chip, OXYGEN_REC_ROUTING, 480 OXYGEN_REC_A_ROUTE_I2S_ADC_1 | 481 OXYGEN_REC_B_ROUTE_I2S_ADC_2 | 482 OXYGEN_REC_C_ROUTE_SPDIF); 483 oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0); 484 oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 485 (0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) | 486 (1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) | 487 (2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) | 488 (3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT)); 489 490 if (chip->has_ac97_0 | chip->has_ac97_1) 491 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 492 OXYGEN_AC97_INT_READ_DONE | 493 OXYGEN_AC97_INT_WRITE_DONE); 494 else 495 oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0); 496 oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0); 497 oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0); 498 if (!(chip->has_ac97_0 | chip->has_ac97_1)) 499 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL, 500 OXYGEN_AC97_CLOCK_DISABLE); 501 if (!chip->has_ac97_0) { 502 oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL, 503 OXYGEN_AC97_NO_CODEC_0); 504 } else { 505 oxygen_write_ac97(chip, 0, AC97_RESET, 0); 506 msleep(1); 507 oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP, 508 CM9780_GPIO0IO | CM9780_GPIO1IO); 509 oxygen_ac97_set_bits(chip, 0, CM9780_MIXER, 510 CM9780_BSTSEL | CM9780_STRO_MIC | 511 CM9780_MIX2FR | CM9780_PCBSW); 512 oxygen_ac97_set_bits(chip, 0, CM9780_JACK, 513 CM9780_RSOE | CM9780_CBOE | 514 CM9780_SSOE | CM9780_FROE | 515 CM9780_MIC2MIC | CM9780_LI2LI); 516 oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000); 517 oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000); 518 oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808); 519 oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808); 520 oxygen_write_ac97(chip, 0, AC97_CD, 0x8808); 521 oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808); 522 oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808); 523 oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000); 524 oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080); 525 oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080); 526 oxygen_ac97_clear_bits(chip, 0, CM9780_GPIO_STATUS, 527 CM9780_GPO0); 528 /* power down unused ADCs and DACs */ 529 oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN, 530 AC97_PD_PR0 | AC97_PD_PR1); 531 oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS, 532 AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK); 533 } 534 if (chip->has_ac97_1) { 535 oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG, 536 OXYGEN_AC97_CODEC1_SLOT3 | 537 OXYGEN_AC97_CODEC1_SLOT4); 538 oxygen_write_ac97(chip, 1, AC97_RESET, 0); 539 msleep(1); 540 oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000); 541 oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000); 542 oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000); 543 oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808); 544 oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808); 545 oxygen_write_ac97(chip, 1, AC97_CD, 0x8808); 546 oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808); 547 oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808); 548 oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808); 549 oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000); 550 oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000); 551 oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040); 552 } 553} 554 555static void oxygen_shutdown(struct oxygen *chip) 556{ 557 guard(spinlock_irq)(&chip->reg_lock); 558 chip->interrupt_mask = 0; 559 chip->pcm_running = 0; 560 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0); 561 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); 562} 563 564static void oxygen_card_free(struct snd_card *card) 565{ 566 struct oxygen *chip = card->private_data; 567 568 oxygen_shutdown(chip); 569 flush_work(&chip->spdif_input_bits_work); 570 flush_work(&chip->gpio_work); 571 chip->model.cleanup(chip); 572 mutex_destroy(&chip->mutex); 573} 574 575static int __oxygen_pci_probe(struct pci_dev *pci, int index, char *id, 576 struct module *owner, 577 const struct pci_device_id *ids, 578 int (*get_model)(struct oxygen *chip, 579 const struct pci_device_id *id 580 ) 581 ) 582{ 583 struct snd_card *card; 584 struct oxygen *chip; 585 const struct pci_device_id *pci_id; 586 int err; 587 588 err = snd_devm_card_new(&pci->dev, index, id, owner, 589 sizeof(*chip), &card); 590 if (err < 0) 591 return err; 592 593 chip = card->private_data; 594 chip->card = card; 595 chip->pci = pci; 596 chip->irq = -1; 597 spin_lock_init(&chip->reg_lock); 598 mutex_init(&chip->mutex); 599 INIT_WORK(&chip->spdif_input_bits_work, 600 oxygen_spdif_input_bits_changed); 601 INIT_WORK(&chip->gpio_work, oxygen_gpio_changed); 602 init_waitqueue_head(&chip->ac97_waitqueue); 603 604 err = pcim_enable_device(pci); 605 if (err < 0) 606 return err; 607 608 err = pcim_request_all_regions(pci, DRIVER); 609 if (err < 0) { 610 dev_err(card->dev, "cannot reserve PCI resources\n"); 611 return err; 612 } 613 614 if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) || 615 pci_resource_len(pci, 0) < OXYGEN_IO_SIZE) { 616 dev_err(card->dev, "invalid PCI I/O range\n"); 617 return -ENXIO; 618 } 619 chip->addr = pci_resource_start(pci, 0); 620 621 pci_id = oxygen_search_pci_id(chip, ids); 622 if (!pci_id) 623 return -ENODEV; 624 625 oxygen_restore_eeprom(chip, pci_id); 626 err = get_model(chip, pci_id); 627 if (err < 0) 628 return err; 629 630 if (chip->model.model_data_size) { 631 chip->model_data = devm_kzalloc(&pci->dev, 632 chip->model.model_data_size, 633 GFP_KERNEL); 634 if (!chip->model_data) 635 return -ENOMEM; 636 } 637 638 pci_set_master(pci); 639 card->private_free = oxygen_card_free; 640 641 configure_pcie_bridge(pci); 642 oxygen_init(chip); 643 chip->model.init(chip); 644 645 err = devm_request_irq(&pci->dev, pci->irq, oxygen_interrupt, 646 IRQF_SHARED, KBUILD_MODNAME, chip); 647 if (err < 0) { 648 dev_err(card->dev, "cannot grab interrupt %d\n", pci->irq); 649 return err; 650 } 651 chip->irq = pci->irq; 652 card->sync_irq = chip->irq; 653 654 strscpy(card->driver, chip->model.chip); 655 strscpy(card->shortname, chip->model.shortname); 656 sprintf(card->longname, "%s at %#lx, irq %i", 657 chip->model.longname, chip->addr, chip->irq); 658 strscpy(card->mixername, chip->model.chip); 659 snd_component_add(card, chip->model.chip); 660 661 err = oxygen_pcm_init(chip); 662 if (err < 0) 663 return err; 664 665 err = oxygen_mixer_init(chip); 666 if (err < 0) 667 return err; 668 669 if (chip->model.device_config & (MIDI_OUTPUT | MIDI_INPUT)) { 670 unsigned int info_flags = 671 MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK; 672 if (chip->model.device_config & MIDI_OUTPUT) 673 info_flags |= MPU401_INFO_OUTPUT; 674 if (chip->model.device_config & MIDI_INPUT) 675 info_flags |= MPU401_INFO_INPUT; 676 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI, 677 chip->addr + OXYGEN_MPU401, 678 info_flags, -1, &chip->midi); 679 if (err < 0) 680 return err; 681 } 682 683 oxygen_proc_init(chip); 684 685 scoped_guard(spinlock_irq, &chip->reg_lock) { 686 if (chip->model.device_config & CAPTURE_1_FROM_SPDIF) 687 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT; 688 if (chip->has_ac97_0 | chip->has_ac97_1) 689 chip->interrupt_mask |= OXYGEN_INT_AC97; 690 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask); 691 } 692 693 err = snd_card_register(card); 694 if (err < 0) 695 return err; 696 697 pci_set_drvdata(pci, card); 698 return 0; 699} 700 701int oxygen_pci_probe(struct pci_dev *pci, int index, char *id, 702 struct module *owner, 703 const struct pci_device_id *ids, 704 int (*get_model)(struct oxygen *chip, 705 const struct pci_device_id *id)) 706{ 707 return snd_card_free_on_error(&pci->dev, 708 __oxygen_pci_probe(pci, index, id, owner, ids, get_model)); 709} 710EXPORT_SYMBOL(oxygen_pci_probe); 711 712static int oxygen_pci_suspend(struct device *dev) 713{ 714 struct snd_card *card = dev_get_drvdata(dev); 715 struct oxygen *chip = card->private_data; 716 unsigned int saved_interrupt_mask; 717 718 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 719 720 if (chip->model.suspend) 721 chip->model.suspend(chip); 722 723 scoped_guard(spinlock_irq, &chip->reg_lock) { 724 saved_interrupt_mask = chip->interrupt_mask; 725 chip->interrupt_mask = 0; 726 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0); 727 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); 728 } 729 730 flush_work(&chip->spdif_input_bits_work); 731 flush_work(&chip->gpio_work); 732 chip->interrupt_mask = saved_interrupt_mask; 733 return 0; 734} 735 736static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = { 737 0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff, 738 0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000 739}; 740static const u32 ac97_registers_to_restore[2][0x40 / 32] = { 741 { 0x18284fa2, 0x03060000 }, 742 { 0x00007fa6, 0x00200000 } 743}; 744 745static inline int is_bit_set(const u32 *bitmap, unsigned int bit) 746{ 747 return bitmap[bit / 32] & (1 << (bit & 31)); 748} 749 750static void oxygen_restore_ac97(struct oxygen *chip, unsigned int codec) 751{ 752 unsigned int i; 753 754 oxygen_write_ac97(chip, codec, AC97_RESET, 0); 755 msleep(1); 756 for (i = 1; i < 0x40; ++i) 757 if (is_bit_set(ac97_registers_to_restore[codec], i)) 758 oxygen_write_ac97(chip, codec, i * 2, 759 chip->saved_ac97_registers[codec][i]); 760} 761 762static int oxygen_pci_resume(struct device *dev) 763{ 764 struct snd_card *card = dev_get_drvdata(dev); 765 struct oxygen *chip = card->private_data; 766 unsigned int i; 767 768 oxygen_write16(chip, OXYGEN_DMA_STATUS, 0); 769 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); 770 for (i = 0; i < OXYGEN_IO_SIZE; ++i) 771 if (is_bit_set(registers_to_restore, i)) 772 oxygen_write8(chip, i, chip->saved_registers._8[i]); 773 if (chip->has_ac97_0) 774 oxygen_restore_ac97(chip, 0); 775 if (chip->has_ac97_1) 776 oxygen_restore_ac97(chip, 1); 777 778 if (chip->model.resume) 779 chip->model.resume(chip); 780 781 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask); 782 783 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 784 return 0; 785} 786 787EXPORT_SIMPLE_DEV_PM_OPS(oxygen_pci_pm, oxygen_pci_suspend, oxygen_pci_resume); 788 789void oxygen_pci_shutdown(struct pci_dev *pci) 790{ 791 struct snd_card *card = pci_get_drvdata(pci); 792 struct oxygen *chip = card->private_data; 793 794 oxygen_shutdown(chip); 795 chip->model.cleanup(chip); 796} 797EXPORT_SYMBOL(oxygen_pci_shutdown);
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