aquacomputer_d5next.c (20600B)
1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * hwmon driver for Aquacomputer devices (D5 Next, Farbwerk, Farbwerk 360, Octo) 4 * 5 * Aquacomputer devices send HID reports (with ID 0x01) every second to report 6 * sensor values. 7 * 8 * Copyright 2021 Aleksa Savic <savicaleksa83@gmail.com> 9 * Copyright 2022 Jack Doan <me@jackdoan.com> 10 */ 11 12#include <linux/crc16.h> 13#include <linux/debugfs.h> 14#include <linux/hid.h> 15#include <linux/hwmon.h> 16#include <linux/jiffies.h> 17#include <linux/module.h> 18#include <linux/mutex.h> 19#include <linux/seq_file.h> 20#include <asm/unaligned.h> 21 22#define USB_VENDOR_ID_AQUACOMPUTER 0x0c70 23#define USB_PRODUCT_ID_FARBWERK 0xf00a 24#define USB_PRODUCT_ID_D5NEXT 0xf00e 25#define USB_PRODUCT_ID_FARBWERK360 0xf010 26#define USB_PRODUCT_ID_OCTO 0xf011 27 28enum kinds { d5next, farbwerk, farbwerk360, octo }; 29 30static const char *const aqc_device_names[] = { 31 [d5next] = "d5next", 32 [farbwerk] = "farbwerk", 33 [farbwerk360] = "farbwerk360", 34 [octo] = "octo" 35}; 36 37#define DRIVER_NAME "aquacomputer_d5next" 38 39#define STATUS_REPORT_ID 0x01 40#define STATUS_UPDATE_INTERVAL (2 * HZ) /* In seconds */ 41#define SERIAL_FIRST_PART 3 42#define SERIAL_SECOND_PART 5 43#define FIRMWARE_VERSION 13 44 45#define CTRL_REPORT_ID 0x03 46 47/* The HID report that the official software always sends 48 * after writing values, currently same for all devices 49 */ 50#define SECONDARY_CTRL_REPORT_ID 0x02 51#define SECONDARY_CTRL_REPORT_SIZE 0x0B 52 53static u8 secondary_ctrl_report[] = { 54 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x34, 0xC6 55}; 56 57/* Register offsets for the D5 Next pump */ 58#define D5NEXT_POWER_CYCLES 24 59 60#define D5NEXT_COOLANT_TEMP 87 61 62#define D5NEXT_PUMP_SPEED 116 63#define D5NEXT_FAN_SPEED 103 64 65#define D5NEXT_PUMP_POWER 114 66#define D5NEXT_FAN_POWER 101 67 68#define D5NEXT_PUMP_VOLTAGE 110 69#define D5NEXT_FAN_VOLTAGE 97 70#define D5NEXT_5V_VOLTAGE 57 71 72#define D5NEXT_PUMP_CURRENT 112 73#define D5NEXT_FAN_CURRENT 99 74 75/* Register offsets for the Farbwerk RGB controller */ 76#define FARBWERK_NUM_SENSORS 4 77#define FARBWERK_SENSOR_START 0x2f 78#define FARBWERK_SENSOR_SIZE 0x02 79#define FARBWERK_SENSOR_DISCONNECTED 0x7FFF 80 81/* Register offsets for the Farbwerk 360 RGB controller */ 82#define FARBWERK360_NUM_SENSORS 4 83#define FARBWERK360_SENSOR_START 0x32 84#define FARBWERK360_SENSOR_SIZE 0x02 85#define FARBWERK360_SENSOR_DISCONNECTED 0x7FFF 86 87/* Register offsets for the Octo fan controller */ 88#define OCTO_POWER_CYCLES 0x18 89#define OCTO_NUM_FANS 8 90#define OCTO_FAN_PERCENT_OFFSET 0x00 91#define OCTO_FAN_VOLTAGE_OFFSET 0x02 92#define OCTO_FAN_CURRENT_OFFSET 0x04 93#define OCTO_FAN_POWER_OFFSET 0x06 94#define OCTO_FAN_SPEED_OFFSET 0x08 95 96static u8 octo_sensor_fan_offsets[] = { 0x7D, 0x8A, 0x97, 0xA4, 0xB1, 0xBE, 0xCB, 0xD8 }; 97 98#define OCTO_NUM_SENSORS 4 99#define OCTO_SENSOR_START 0x3D 100#define OCTO_SENSOR_SIZE 0x02 101#define OCTO_SENSOR_DISCONNECTED 0x7FFF 102 103#define OCTO_CTRL_REPORT_SIZE 0x65F 104#define OCTO_CTRL_REPORT_CHECKSUM_OFFSET 0x65D 105#define OCTO_CTRL_REPORT_CHECKSUM_START 0x01 106#define OCTO_CTRL_REPORT_CHECKSUM_LENGTH 0x65C 107 108/* Fan speed registers in Octo control report (from 0-100%) */ 109static u16 octo_ctrl_fan_offsets[] = { 0x5B, 0xB0, 0x105, 0x15A, 0x1AF, 0x204, 0x259, 0x2AE }; 110 111/* Labels for D5 Next */ 112static const char *const label_d5next_temp[] = { 113 "Coolant temp" 114}; 115 116static const char *const label_d5next_speeds[] = { 117 "Pump speed", 118 "Fan speed" 119}; 120 121static const char *const label_d5next_power[] = { 122 "Pump power", 123 "Fan power" 124}; 125 126static const char *const label_d5next_voltages[] = { 127 "Pump voltage", 128 "Fan voltage", 129 "+5V voltage" 130}; 131 132static const char *const label_d5next_current[] = { 133 "Pump current", 134 "Fan current" 135}; 136 137/* Labels for Farbwerk, Farbwerk 360 and Octo temperature sensors */ 138static const char *const label_temp_sensors[] = { 139 "Sensor 1", 140 "Sensor 2", 141 "Sensor 3", 142 "Sensor 4" 143}; 144 145/* Labels for Octo */ 146static const char *const label_fan_speed[] = { 147 "Fan 1 speed", 148 "Fan 2 speed", 149 "Fan 3 speed", 150 "Fan 4 speed", 151 "Fan 5 speed", 152 "Fan 6 speed", 153 "Fan 7 speed", 154 "Fan 8 speed" 155}; 156 157static const char *const label_fan_power[] = { 158 "Fan 1 power", 159 "Fan 2 power", 160 "Fan 3 power", 161 "Fan 4 power", 162 "Fan 5 power", 163 "Fan 6 power", 164 "Fan 7 power", 165 "Fan 8 power" 166}; 167 168static const char *const label_fan_voltage[] = { 169 "Fan 1 voltage", 170 "Fan 2 voltage", 171 "Fan 3 voltage", 172 "Fan 4 voltage", 173 "Fan 5 voltage", 174 "Fan 6 voltage", 175 "Fan 7 voltage", 176 "Fan 8 voltage" 177}; 178 179static const char *const label_fan_current[] = { 180 "Fan 1 current", 181 "Fan 2 current", 182 "Fan 3 current", 183 "Fan 4 current", 184 "Fan 5 current", 185 "Fan 6 current", 186 "Fan 7 current", 187 "Fan 8 current" 188}; 189 190struct aqc_data { 191 struct hid_device *hdev; 192 struct device *hwmon_dev; 193 struct dentry *debugfs; 194 struct mutex mutex; /* Used for locking access when reading and writing PWM values */ 195 enum kinds kind; 196 const char *name; 197 198 int buffer_size; 199 u8 *buffer; 200 int checksum_start; 201 int checksum_length; 202 int checksum_offset; 203 204 /* General info, same across all devices */ 205 u32 serial_number[2]; 206 u16 firmware_version; 207 208 /* How many times the device was powered on */ 209 u32 power_cycles; 210 211 /* Sensor values */ 212 s32 temp_input[4]; 213 u16 speed_input[8]; 214 u32 power_input[8]; 215 u16 voltage_input[8]; 216 u16 current_input[8]; 217 218 /* Label values */ 219 const char *const *temp_label; 220 const char *const *speed_label; 221 const char *const *power_label; 222 const char *const *voltage_label; 223 const char *const *current_label; 224 225 unsigned long updated; 226}; 227 228/* Converts from centi-percent */ 229static int aqc_percent_to_pwm(u16 val) 230{ 231 return DIV_ROUND_CLOSEST(val * 255, 100 * 100); 232} 233 234/* Converts to centi-percent */ 235static int aqc_pwm_to_percent(long val) 236{ 237 if (val < 0 || val > 255) 238 return -EINVAL; 239 240 return DIV_ROUND_CLOSEST(val * 100 * 100, 255); 241} 242 243/* Expects the mutex to be locked */ 244static int aqc_get_ctrl_data(struct aqc_data *priv) 245{ 246 int ret; 247 248 memset(priv->buffer, 0x00, priv->buffer_size); 249 ret = hid_hw_raw_request(priv->hdev, CTRL_REPORT_ID, priv->buffer, priv->buffer_size, 250 HID_FEATURE_REPORT, HID_REQ_GET_REPORT); 251 if (ret < 0) 252 ret = -ENODATA; 253 254 return ret; 255} 256 257/* Expects the mutex to be locked */ 258static int aqc_send_ctrl_data(struct aqc_data *priv) 259{ 260 int ret; 261 u16 checksum; 262 263 /* Init and xorout value for CRC-16/USB is 0xffff */ 264 checksum = crc16(0xffff, priv->buffer + priv->checksum_start, priv->checksum_length); 265 checksum ^= 0xffff; 266 267 /* Place the new checksum at the end of the report */ 268 put_unaligned_be16(checksum, priv->buffer + priv->checksum_offset); 269 270 /* Send the patched up report back to the device */ 271 ret = hid_hw_raw_request(priv->hdev, CTRL_REPORT_ID, priv->buffer, priv->buffer_size, 272 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); 273 if (ret < 0) 274 return ret; 275 276 /* The official software sends this report after every change, so do it here as well */ 277 ret = hid_hw_raw_request(priv->hdev, SECONDARY_CTRL_REPORT_ID, secondary_ctrl_report, 278 SECONDARY_CTRL_REPORT_SIZE, HID_FEATURE_REPORT, 279 HID_REQ_SET_REPORT); 280 return ret; 281} 282 283/* Refreshes the control buffer and returns value at offset */ 284static int aqc_get_ctrl_val(struct aqc_data *priv, int offset) 285{ 286 int ret; 287 288 mutex_lock(&priv->mutex); 289 290 ret = aqc_get_ctrl_data(priv); 291 if (ret < 0) 292 goto unlock_and_return; 293 294 ret = get_unaligned_be16(priv->buffer + offset); 295 296unlock_and_return: 297 mutex_unlock(&priv->mutex); 298 return ret; 299} 300 301static int aqc_set_ctrl_val(struct aqc_data *priv, int offset, long val) 302{ 303 int ret; 304 305 mutex_lock(&priv->mutex); 306 307 ret = aqc_get_ctrl_data(priv); 308 if (ret < 0) 309 goto unlock_and_return; 310 311 put_unaligned_be16((u16)val, priv->buffer + offset); 312 313 ret = aqc_send_ctrl_data(priv); 314 315unlock_and_return: 316 mutex_unlock(&priv->mutex); 317 return ret; 318} 319 320static umode_t aqc_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) 321{ 322 const struct aqc_data *priv = data; 323 324 switch (type) { 325 case hwmon_temp: 326 switch (priv->kind) { 327 case d5next: 328 if (channel == 0) 329 return 0444; 330 break; 331 case farbwerk: 332 case farbwerk360: 333 case octo: 334 return 0444; 335 default: 336 break; 337 } 338 break; 339 case hwmon_pwm: 340 switch (priv->kind) { 341 case octo: 342 switch (attr) { 343 case hwmon_pwm_input: 344 return 0644; 345 default: 346 break; 347 } 348 break; 349 default: 350 break; 351 } 352 break; 353 case hwmon_fan: 354 case hwmon_power: 355 case hwmon_curr: 356 switch (priv->kind) { 357 case d5next: 358 if (channel < 2) 359 return 0444; 360 break; 361 case octo: 362 return 0444; 363 default: 364 break; 365 } 366 break; 367 case hwmon_in: 368 switch (priv->kind) { 369 case d5next: 370 if (channel < 3) 371 return 0444; 372 break; 373 case octo: 374 return 0444; 375 default: 376 break; 377 } 378 break; 379 default: 380 break; 381 } 382 383 return 0; 384} 385 386static int aqc_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, 387 int channel, long *val) 388{ 389 int ret; 390 struct aqc_data *priv = dev_get_drvdata(dev); 391 392 if (time_after(jiffies, priv->updated + STATUS_UPDATE_INTERVAL)) 393 return -ENODATA; 394 395 switch (type) { 396 case hwmon_temp: 397 if (priv->temp_input[channel] == -ENODATA) 398 return -ENODATA; 399 400 *val = priv->temp_input[channel]; 401 break; 402 case hwmon_fan: 403 *val = priv->speed_input[channel]; 404 break; 405 case hwmon_power: 406 *val = priv->power_input[channel]; 407 break; 408 case hwmon_pwm: 409 switch (priv->kind) { 410 case octo: 411 ret = aqc_get_ctrl_val(priv, octo_ctrl_fan_offsets[channel]); 412 if (ret < 0) 413 return ret; 414 415 *val = aqc_percent_to_pwm(ret); 416 break; 417 default: 418 break; 419 } 420 break; 421 case hwmon_in: 422 *val = priv->voltage_input[channel]; 423 break; 424 case hwmon_curr: 425 *val = priv->current_input[channel]; 426 break; 427 default: 428 return -EOPNOTSUPP; 429 } 430 431 return 0; 432} 433 434static int aqc_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr, 435 int channel, const char **str) 436{ 437 struct aqc_data *priv = dev_get_drvdata(dev); 438 439 switch (type) { 440 case hwmon_temp: 441 *str = priv->temp_label[channel]; 442 break; 443 case hwmon_fan: 444 *str = priv->speed_label[channel]; 445 break; 446 case hwmon_power: 447 *str = priv->power_label[channel]; 448 break; 449 case hwmon_in: 450 *str = priv->voltage_label[channel]; 451 break; 452 case hwmon_curr: 453 *str = priv->current_label[channel]; 454 break; 455 default: 456 return -EOPNOTSUPP; 457 } 458 459 return 0; 460} 461 462static int aqc_write(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, 463 long val) 464{ 465 int ret, pwm_value; 466 struct aqc_data *priv = dev_get_drvdata(dev); 467 468 switch (type) { 469 case hwmon_pwm: 470 switch (attr) { 471 case hwmon_pwm_input: 472 switch (priv->kind) { 473 case octo: 474 pwm_value = aqc_pwm_to_percent(val); 475 if (pwm_value < 0) 476 return pwm_value; 477 478 ret = aqc_set_ctrl_val(priv, octo_ctrl_fan_offsets[channel], 479 pwm_value); 480 if (ret < 0) 481 return ret; 482 break; 483 default: 484 break; 485 } 486 break; 487 default: 488 break; 489 } 490 break; 491 default: 492 return -EOPNOTSUPP; 493 } 494 495 return 0; 496} 497 498static const struct hwmon_ops aqc_hwmon_ops = { 499 .is_visible = aqc_is_visible, 500 .read = aqc_read, 501 .read_string = aqc_read_string, 502 .write = aqc_write 503}; 504 505static const struct hwmon_channel_info *aqc_info[] = { 506 HWMON_CHANNEL_INFO(temp, 507 HWMON_T_INPUT | HWMON_T_LABEL, 508 HWMON_T_INPUT | HWMON_T_LABEL, 509 HWMON_T_INPUT | HWMON_T_LABEL, 510 HWMON_T_INPUT | HWMON_T_LABEL), 511 HWMON_CHANNEL_INFO(fan, 512 HWMON_F_INPUT | HWMON_F_LABEL, 513 HWMON_F_INPUT | HWMON_F_LABEL, 514 HWMON_F_INPUT | HWMON_F_LABEL, 515 HWMON_F_INPUT | HWMON_F_LABEL, 516 HWMON_F_INPUT | HWMON_F_LABEL, 517 HWMON_F_INPUT | HWMON_F_LABEL, 518 HWMON_F_INPUT | HWMON_F_LABEL, 519 HWMON_F_INPUT | HWMON_F_LABEL), 520 HWMON_CHANNEL_INFO(power, 521 HWMON_P_INPUT | HWMON_P_LABEL, 522 HWMON_P_INPUT | HWMON_P_LABEL, 523 HWMON_P_INPUT | HWMON_P_LABEL, 524 HWMON_P_INPUT | HWMON_P_LABEL, 525 HWMON_P_INPUT | HWMON_P_LABEL, 526 HWMON_P_INPUT | HWMON_P_LABEL, 527 HWMON_P_INPUT | HWMON_P_LABEL, 528 HWMON_P_INPUT | HWMON_P_LABEL), 529 HWMON_CHANNEL_INFO(pwm, 530 HWMON_PWM_INPUT, 531 HWMON_PWM_INPUT, 532 HWMON_PWM_INPUT, 533 HWMON_PWM_INPUT, 534 HWMON_PWM_INPUT, 535 HWMON_PWM_INPUT, 536 HWMON_PWM_INPUT, 537 HWMON_PWM_INPUT), 538 HWMON_CHANNEL_INFO(in, 539 HWMON_I_INPUT | HWMON_I_LABEL, 540 HWMON_I_INPUT | HWMON_I_LABEL, 541 HWMON_I_INPUT | HWMON_I_LABEL, 542 HWMON_I_INPUT | HWMON_I_LABEL, 543 HWMON_I_INPUT | HWMON_I_LABEL, 544 HWMON_I_INPUT | HWMON_I_LABEL, 545 HWMON_I_INPUT | HWMON_I_LABEL, 546 HWMON_I_INPUT | HWMON_I_LABEL), 547 HWMON_CHANNEL_INFO(curr, 548 HWMON_C_INPUT | HWMON_C_LABEL, 549 HWMON_C_INPUT | HWMON_C_LABEL, 550 HWMON_C_INPUT | HWMON_C_LABEL, 551 HWMON_C_INPUT | HWMON_C_LABEL, 552 HWMON_C_INPUT | HWMON_C_LABEL, 553 HWMON_C_INPUT | HWMON_C_LABEL, 554 HWMON_C_INPUT | HWMON_C_LABEL, 555 HWMON_C_INPUT | HWMON_C_LABEL), 556 NULL 557}; 558 559static const struct hwmon_chip_info aqc_chip_info = { 560 .ops = &aqc_hwmon_ops, 561 .info = aqc_info, 562}; 563 564static int aqc_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, int size) 565{ 566 int i, sensor_value; 567 struct aqc_data *priv; 568 569 if (report->id != STATUS_REPORT_ID) 570 return 0; 571 572 priv = hid_get_drvdata(hdev); 573 574 /* Info provided with every report */ 575 priv->serial_number[0] = get_unaligned_be16(data + SERIAL_FIRST_PART); 576 priv->serial_number[1] = get_unaligned_be16(data + SERIAL_SECOND_PART); 577 priv->firmware_version = get_unaligned_be16(data + FIRMWARE_VERSION); 578 579 /* Sensor readings */ 580 switch (priv->kind) { 581 case d5next: 582 priv->power_cycles = get_unaligned_be32(data + D5NEXT_POWER_CYCLES); 583 584 priv->temp_input[0] = get_unaligned_be16(data + D5NEXT_COOLANT_TEMP) * 10; 585 586 priv->speed_input[0] = get_unaligned_be16(data + D5NEXT_PUMP_SPEED); 587 priv->speed_input[1] = get_unaligned_be16(data + D5NEXT_FAN_SPEED); 588 589 priv->power_input[0] = get_unaligned_be16(data + D5NEXT_PUMP_POWER) * 10000; 590 priv->power_input[1] = get_unaligned_be16(data + D5NEXT_FAN_POWER) * 10000; 591 592 priv->voltage_input[0] = get_unaligned_be16(data + D5NEXT_PUMP_VOLTAGE) * 10; 593 priv->voltage_input[1] = get_unaligned_be16(data + D5NEXT_FAN_VOLTAGE) * 10; 594 priv->voltage_input[2] = get_unaligned_be16(data + D5NEXT_5V_VOLTAGE) * 10; 595 596 priv->current_input[0] = get_unaligned_be16(data + D5NEXT_PUMP_CURRENT); 597 priv->current_input[1] = get_unaligned_be16(data + D5NEXT_FAN_CURRENT); 598 break; 599 case farbwerk: 600 /* Temperature sensor readings */ 601 for (i = 0; i < FARBWERK_NUM_SENSORS; i++) { 602 sensor_value = get_unaligned_be16(data + FARBWERK_SENSOR_START + 603 i * FARBWERK_SENSOR_SIZE); 604 if (sensor_value == FARBWERK_SENSOR_DISCONNECTED) 605 priv->temp_input[i] = -ENODATA; 606 else 607 priv->temp_input[i] = sensor_value * 10; 608 } 609 break; 610 case farbwerk360: 611 /* Temperature sensor readings */ 612 for (i = 0; i < FARBWERK360_NUM_SENSORS; i++) { 613 sensor_value = get_unaligned_be16(data + FARBWERK360_SENSOR_START + 614 i * FARBWERK360_SENSOR_SIZE); 615 if (sensor_value == FARBWERK360_SENSOR_DISCONNECTED) 616 priv->temp_input[i] = -ENODATA; 617 else 618 priv->temp_input[i] = sensor_value * 10; 619 } 620 break; 621 case octo: 622 priv->power_cycles = get_unaligned_be32(data + OCTO_POWER_CYCLES); 623 624 /* Fan speed and related readings */ 625 for (i = 0; i < OCTO_NUM_FANS; i++) { 626 priv->speed_input[i] = 627 get_unaligned_be16(data + octo_sensor_fan_offsets[i] + 628 OCTO_FAN_SPEED_OFFSET); 629 priv->power_input[i] = 630 get_unaligned_be16(data + octo_sensor_fan_offsets[i] + 631 OCTO_FAN_POWER_OFFSET) * 10000; 632 priv->voltage_input[i] = 633 get_unaligned_be16(data + octo_sensor_fan_offsets[i] + 634 OCTO_FAN_VOLTAGE_OFFSET) * 10; 635 priv->current_input[i] = 636 get_unaligned_be16(data + octo_sensor_fan_offsets[i] + 637 OCTO_FAN_CURRENT_OFFSET); 638 } 639 640 /* Temperature sensor readings */ 641 for (i = 0; i < OCTO_NUM_SENSORS; i++) { 642 sensor_value = get_unaligned_be16(data + OCTO_SENSOR_START + 643 i * OCTO_SENSOR_SIZE); 644 if (sensor_value == OCTO_SENSOR_DISCONNECTED) 645 priv->temp_input[i] = -ENODATA; 646 else 647 priv->temp_input[i] = sensor_value * 10; 648 } 649 break; 650 default: 651 break; 652 } 653 654 priv->updated = jiffies; 655 656 return 0; 657} 658 659#ifdef CONFIG_DEBUG_FS 660 661static int serial_number_show(struct seq_file *seqf, void *unused) 662{ 663 struct aqc_data *priv = seqf->private; 664 665 seq_printf(seqf, "%05u-%05u\n", priv->serial_number[0], priv->serial_number[1]); 666 667 return 0; 668} 669DEFINE_SHOW_ATTRIBUTE(serial_number); 670 671static int firmware_version_show(struct seq_file *seqf, void *unused) 672{ 673 struct aqc_data *priv = seqf->private; 674 675 seq_printf(seqf, "%u\n", priv->firmware_version); 676 677 return 0; 678} 679DEFINE_SHOW_ATTRIBUTE(firmware_version); 680 681static int power_cycles_show(struct seq_file *seqf, void *unused) 682{ 683 struct aqc_data *priv = seqf->private; 684 685 seq_printf(seqf, "%u\n", priv->power_cycles); 686 687 return 0; 688} 689DEFINE_SHOW_ATTRIBUTE(power_cycles); 690 691static void aqc_debugfs_init(struct aqc_data *priv) 692{ 693 char name[64]; 694 695 scnprintf(name, sizeof(name), "%s_%s-%s", "aquacomputer", priv->name, 696 dev_name(&priv->hdev->dev)); 697 698 priv->debugfs = debugfs_create_dir(name, NULL); 699 debugfs_create_file("serial_number", 0444, priv->debugfs, priv, &serial_number_fops); 700 debugfs_create_file("firmware_version", 0444, priv->debugfs, priv, &firmware_version_fops); 701 702 switch (priv->kind) { 703 case d5next: 704 case octo: 705 debugfs_create_file("power_cycles", 0444, priv->debugfs, priv, &power_cycles_fops); 706 break; 707 default: 708 break; 709 } 710} 711 712#else 713 714static void aqc_debugfs_init(struct aqc_data *priv) 715{ 716} 717 718#endif 719 720static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id) 721{ 722 struct aqc_data *priv; 723 int ret; 724 725 priv = devm_kzalloc(&hdev->dev, sizeof(*priv), GFP_KERNEL); 726 if (!priv) 727 return -ENOMEM; 728 729 priv->hdev = hdev; 730 hid_set_drvdata(hdev, priv); 731 732 priv->updated = jiffies - STATUS_UPDATE_INTERVAL; 733 734 ret = hid_parse(hdev); 735 if (ret) 736 return ret; 737 738 ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW); 739 if (ret) 740 return ret; 741 742 ret = hid_hw_open(hdev); 743 if (ret) 744 goto fail_and_stop; 745 746 switch (hdev->product) { 747 case USB_PRODUCT_ID_D5NEXT: 748 priv->kind = d5next; 749 750 priv->temp_label = label_d5next_temp; 751 priv->speed_label = label_d5next_speeds; 752 priv->power_label = label_d5next_power; 753 priv->voltage_label = label_d5next_voltages; 754 priv->current_label = label_d5next_current; 755 break; 756 case USB_PRODUCT_ID_FARBWERK: 757 priv->kind = farbwerk; 758 759 priv->temp_label = label_temp_sensors; 760 break; 761 case USB_PRODUCT_ID_FARBWERK360: 762 priv->kind = farbwerk360; 763 764 priv->temp_label = label_temp_sensors; 765 break; 766 case USB_PRODUCT_ID_OCTO: 767 priv->kind = octo; 768 priv->buffer_size = OCTO_CTRL_REPORT_SIZE; 769 priv->checksum_start = OCTO_CTRL_REPORT_CHECKSUM_START; 770 priv->checksum_length = OCTO_CTRL_REPORT_CHECKSUM_LENGTH; 771 priv->checksum_offset = OCTO_CTRL_REPORT_CHECKSUM_OFFSET; 772 773 priv->temp_label = label_temp_sensors; 774 priv->speed_label = label_fan_speed; 775 priv->power_label = label_fan_power; 776 priv->voltage_label = label_fan_voltage; 777 priv->current_label = label_fan_current; 778 break; 779 default: 780 break; 781 } 782 783 priv->name = aqc_device_names[priv->kind]; 784 785 priv->buffer = devm_kzalloc(&hdev->dev, priv->buffer_size, GFP_KERNEL); 786 if (!priv->buffer) { 787 ret = -ENOMEM; 788 goto fail_and_close; 789 } 790 791 mutex_init(&priv->mutex); 792 793 priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, priv->name, priv, 794 &aqc_chip_info, NULL); 795 796 if (IS_ERR(priv->hwmon_dev)) { 797 ret = PTR_ERR(priv->hwmon_dev); 798 goto fail_and_close; 799 } 800 801 aqc_debugfs_init(priv); 802 803 return 0; 804 805fail_and_close: 806 hid_hw_close(hdev); 807fail_and_stop: 808 hid_hw_stop(hdev); 809 return ret; 810} 811 812static void aqc_remove(struct hid_device *hdev) 813{ 814 struct aqc_data *priv = hid_get_drvdata(hdev); 815 816 debugfs_remove_recursive(priv->debugfs); 817 hwmon_device_unregister(priv->hwmon_dev); 818 819 hid_hw_close(hdev); 820 hid_hw_stop(hdev); 821} 822 823static const struct hid_device_id aqc_table[] = { 824 { HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_D5NEXT) }, 825 { HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_FARBWERK) }, 826 { HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_FARBWERK360) }, 827 { HID_USB_DEVICE(USB_VENDOR_ID_AQUACOMPUTER, USB_PRODUCT_ID_OCTO) }, 828 { } 829}; 830 831MODULE_DEVICE_TABLE(hid, aqc_table); 832 833static struct hid_driver aqc_driver = { 834 .name = DRIVER_NAME, 835 .id_table = aqc_table, 836 .probe = aqc_probe, 837 .remove = aqc_remove, 838 .raw_event = aqc_raw_event, 839}; 840 841static int __init aqc_init(void) 842{ 843 return hid_register_driver(&aqc_driver); 844} 845 846static void __exit aqc_exit(void) 847{ 848 hid_unregister_driver(&aqc_driver); 849} 850 851/* Request to initialize after the HID bus to ensure it's not being loaded before */ 852late_initcall(aqc_init); 853module_exit(aqc_exit); 854 855MODULE_LICENSE("GPL"); 856MODULE_AUTHOR("Aleksa Savic <savicaleksa83@gmail.com>"); 857MODULE_AUTHOR("Jack Doan <me@jackdoan.com>"); 858MODULE_DESCRIPTION("Hwmon driver for Aquacomputer devices");