On 7/4/20 2:25 PM, Barnabás Pőcze wrote: > 2020. július 4., szombat 22:54 keltezéssel, Guenter Roeck írta: >> On 7/4/20 12:50 PM, Barnabás Pőcze wrote: >> >>> Hello all, >>> I am completely new to Linux kernel development. I have written a kernel module for my laptop that integrates the fan speeds available in the embedded controller memory into the hwmon subsystem. >>> My first question would be: can such a driver be merged into the mainline? I ask this because it is a device specific driver, and I am not sure if such drivers are wanted in the mainline. >> >> There are several device/platform specific drivers in drivers/hwmon; >> that is not a problem. Question is more how the EC is accessed, and > > It is accessed using the acpi/ec driver. > > >> who is going to maintain the driver after the initial submission. >> This might be easier to evaluate if we had a patch or a pointer to, >> for example, an out-of-tree driver at a public repository site such >> as github. >> > > I uploaded it to github, I hope it helps: https://github.com/pobrn/xmg_fusion_15_fans > I apologize for stylistic inconsistencies and such in the code, this is more or less a work in progress (at least in terms of making it an "acceptable" kernel module). > Way too noisy, way too too many empty lines, and you should drop the "nodetect" module option as it is way too risky. Otherwise I don't have major problems with it. Guenter > >>> Depending on the answer to my first question, my second question is: where should such a driver reside in the source tree? Initially, I thought of drivers/hwmon, but that seems to be occupied by drivers for external(?) devices (I am not sure, but that is the idea I get). So I am now thinking of drivers/platform/x86. However, I have failed to find any fan hwmon drivers there, so I am not sure about that one, either. >> >> hwmon drivers should in general reside in drivers/hwmon, unless hardware >> monitoring functionality is part of other functionality and would be >> difficult to extract from the main driver (example: various Ethernet >> or graphics controllers). >> >> Guenter > > > Thanks for the reply. > > Barnabás Pőcze >
