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The Corsair digital power supplies of the series RMi, HXi and AXi include a small micro-controller with a lot of sensors attached. The sensors can be accessed by an USB connector from the outside. This micro-controller provides the data by a simple proprietary USB HID protocol. The data consist of temperatures, current and voltage levels, power usage, uptimes, fan speed and some more. It is also possible to configure the PSU (fan mode, mono/multi-rail, over current protection). This driver provides access to the sensors/statistics of the RMi and HXi series power supplies. It does not support configuring these devices, because there would be many ways to misconfigure or even damage the PSU. This patch adds: - hwmon driver corsair-psu - hwmon documentation - updates MAINTAINERS Signed-off-by: Wilken Gottwalt <wilken.gottwalt@posteo.net> Link: https://lore.kernel.org/r/20201027131710.GA253280@monster.powergraphx.local Signed-off-by: Guenter Roeck <linux@roeck-us.net>
83 lines
2.1 KiB
ReStructuredText
83 lines
2.1 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0-or-later
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Kernel driver corsair-psu
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=========================
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Supported devices:
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* Corsair Power Supplies
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Corsair HX550i
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Corsair HX650i
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Corsair HX750i
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Corsair HX850i
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Corsair HX1000i
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Corsair HX1200i
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Corsair RM550i
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Corsair RM650i
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Corsair RM750i
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Corsair RM850i
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Corsair RM1000i
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Author: Wilken Gottwalt
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Description
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-----------
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This driver implements the sysfs interface for the Corsair PSUs with a HID protocol
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interface of the HXi and RMi series.
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These power supplies provide access to a micro-controller with 2 attached
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temperature sensors, 1 fan rpm sensor, 4 sensors for volt levels, 4 sensors for
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power usage and 4 sensors for current levels and addtional non-sensor information
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like uptimes.
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Sysfs entries
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-------------
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======================= ========================================================
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curr1_input Total current usage
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curr2_input Current on the 12v psu rail
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curr3_input Current on the 5v psu rail
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curr4_input Current on the 3.3v psu rail
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fan1_input RPM of psu fan
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in0_input Voltage of the psu ac input
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in1_input Voltage of the 12v psu rail
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in2_input Voltage of the 5v psu rail
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in3_input Voltage of the 3.3 psu rail
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power1_input Total power usage
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power2_input Power usage of the 12v psu rail
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power3_input Power usage of the 5v psu rail
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power4_input Power usage of the 3.3v psu rail
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temp1_input Temperature of the psu vrm component
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temp2_input Temperature of the psu case
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======================= ========================================================
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Usage Notes
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-----------
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It is an USB HID device, so it is auto-detected and supports hot-swapping.
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Flickering values in the rail voltage levels can be an indicator for a failing
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PSU. The driver also provides some additional useful values via debugfs, which
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do not fit into the hwmon class.
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Debugfs entries
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---------------
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======================= ========================================================
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uptime Current uptime of the psu
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uptime_total Total uptime of the psu
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vendor Vendor name of the psu
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product Product name of the psu
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======================= ========================================================
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