1.. SPDX-License-Identifier: GPL-2.0-or-later 2 3Kernel driver aquacomputer-d5next 4================================= 5 6Supported devices: 7 8* Aquacomputer Aquaero 5/6 fan controllers 9* Aquacomputer D5 Next watercooling pump 10* Aquacomputer Farbwerk RGB controller 11* Aquacomputer Farbwerk 360 RGB controller 12* Aquacomputer Octo fan controller 13* Aquacomputer Quadro fan controller 14* Aquacomputer High Flow Next sensor 15* Aquacomputer Aquastream Ultimate watercooling pump 16* Aquacomputer Poweradjust 3 fan controller 17 18Author: Aleksa Savic 19 20Description 21----------- 22 23This driver exposes hardware sensors of listed Aquacomputer devices, which 24communicate through proprietary USB HID protocols. 25 26The Aquaero devices expose eight physical, eight virtual and four calculated 27virtual temperature sensors, as well as two flow sensors. The fans expose their 28speed (in RPM), power, voltage and current. 29 30For the D5 Next pump, available sensors are pump and fan speed, power, voltage 31and current, as well as coolant temperature and eight virtual temp sensors. Also 32available through debugfs are the serial number, firmware version and power-on 33count. Attaching a fan to it is optional and allows it to be controlled using 34temperature curves directly from the pump. If it's not connected, the fan-related 35sensors will report zeroes. 36 37The pump can be configured either through software or via its physical 38interface. Configuring the pump through this driver is not implemented, as it 39seems to require sending it a complete configuration. That includes addressable 40RGB LEDs, for which there is no standard sysfs interface. Thus, that task is 41better suited for userspace tools. 42 43The Octo exposes four physical and sixteen virtual temperature sensors, as well as 44eight PWM controllable fans, along with their speed (in RPM), power, voltage and 45current. 46 47The Quadro exposes four physical and sixteen virtual temperature sensors, a flow 48sensor and four PWM controllable fans, along with their speed (in RPM), power, 49voltage and current. Flow sensor pulses are also available. 50 51The Farbwerk and Farbwerk 360 expose four temperature sensors. Additionally, 52sixteen virtual temperature sensors of the Farbwerk 360 are exposed. 53 54The High Flow Next exposes +5V voltages, water quality, conductivity and flow readings. 55A temperature sensor can be connected to it, in which case it provides its reading 56and an estimation of the dissipated/absorbed power in the liquid cooling loop. 57 58The Aquastream Ultimate pump exposes coolant temp and an external temp sensor, along 59with speed, power, voltage and current of both the pump and optionally connected fan. 60It also exposes pressure and flow speed readings. 61 62The Poweradjust 3 controller exposes a single external temperature sensor. 63 64Depending on the device, not all sysfs and debugfs entries will be available. 65Writing to virtual temperature sensors is not currently supported. 66 67Usage notes 68----------- 69 70The devices communicate via HID reports. The driver is loaded automatically by 71the kernel and supports hotswapping. 72 73Sysfs entries 74------------- 75 76================ ============================================================== 77temp[1-20]_input Physical/virtual temperature sensors (in millidegrees Celsius) 78temp[1-4]_offset Temperature sensor correction offset (in millidegrees Celsius) 79fan[1-8]_input Pump/fan speed (in RPM) / Flow speed (in dL/h) 80fan5_pulses Quadro flow sensor pulses 81power[1-8]_input Pump/fan power (in micro Watts) 82in[0-7]_input Pump/fan voltage (in milli Volts) 83curr[1-8]_input Pump/fan current (in milli Amperes) 84pwm[1-8] Fan PWM (0 - 255) 85================ ============================================================== 86 87Debugfs entries 88--------------- 89 90================ ================================================= 91serial_number Serial number of the device 92firmware_version Version of installed firmware 93power_cycles Count of how many times the device was powered on 94================ ================================================= 95