1.. SPDX-License-Identifier: GPL-2.0-or-later 2 3Kernel driver aquacomputer-d5next 4================================= 5 6Supported devices: 7 8* Aquacomputer D5 Next watercooling pump 9* Aquacomputer Farbwerk 360 RGB controller 10 11Author: Aleksa Savic 12 13Description 14----------- 15 16This driver exposes hardware sensors of listed Aquacomputer devices, which 17communicate through proprietary USB HID protocols. 18 19For the D5 Next pump, available sensors are pump and fan speed, power, voltage 20and current, as well as coolant temperature. Also available through debugfs are 21the serial number, firmware version and power-on count. Attaching a fan to it is 22optional and allows it to be controlled using temperature curves directly from the 23pump. If it's not connected, the fan-related sensors will report zeroes. 24 25The pump can be configured either through software or via its physical 26interface. Configuring the pump through this driver is not implemented, as it 27seems to require sending it a complete configuration. That includes addressable 28RGB LEDs, for which there is no standard sysfs interface. Thus, that task is 29better suited for userspace tools. 30 31The Farbwerk 360 exposes four temperature sensors. Depending on the device, 32not all sysfs and debugfs entries will be available. 33 34Usage notes 35----------- 36 37The devices communicate via HID reports. The driver is loaded automatically by 38the kernel and supports hotswapping. 39 40Sysfs entries 41------------- 42 43================ ============================================= 44temp[1-4]_input Temperature sensors (in millidegrees Celsius) 45fan[1-2]_input Pump/fan speed (in RPM) 46power[1-2]_input Pump/fan power (in micro Watts) 47in[0-2]_input Pump/fan voltage (in milli Volts) 48curr[1-2]_input Pump/fan current (in milli Amperes) 49================ ============================================= 50 51Debugfs entries 52--------------- 53 54================ ================================================= 55serial_number Serial number of the device 56firmware_version Version of installed firmware 57power_cycles Count of how many times the device was powered on 58================ ================================================= 59