Re: [PATCH v2] hwmon: add driver for NZXT Kraken X42/X52/X62/X72

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On Fri, Mar 19, 2021 at 01:55:44AM -0300, Jonas Malaco wrote:
> These are "all-in-one" CPU liquid coolers that can be monitored and
> controlled through a proprietary USB HID protocol.
> 
> While the models have differently sized radiators and come with varying
> numbers of fans, they are all indistinguishable at the software level.
> 
> The driver exposes fan/pump speeds and coolant temperature through the
> standard hwmon sysfs interface.
> 
> Fan and pump control, while supported by the devices, are not currently
> exposed.  The firmware accepts up to 61 trip points per channel
> (fan/pump), but the same set of trip temperatures has to be maintained
> for both; with pwmX_auto_point_Y_temp attributes, users would need to
> maintain this invariant themselves.
> 
> Instead, fan and pump control, as well as LED control (which the device
> also supports for 9 addressable RGB LEDs on the CPU water block) are
> left for existing and already mature user-space tools, which can still
> be used alongside the driver, thanks to hidraw.  A link to one, which I
> also maintain, is provided in the documentation.
> 
> The implementation is based on USB traffic analysis.  It has been
> runtime tested on x86_64, both as a built-in driver and as a module.
> 
> Signed-off-by: Jonas Malaco <jonas@xxxxxxxxxxxx>

Applied (after removing the now unnecessary spinlock.h include).

Thanks,
Guenter



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