On Mon, Dec 16, 2013 at 3:05 PM, Lee Jones <[email protected]> wrote: > Please refrain from top posting. > > Responses should appear under quoted lines, which they reference.
I intentionally did not reply to a specific quote, but to the email as a whole! >> >> I have been trying to write about 50-100 LOC for 1-2 weeks now. I have >> >> a fairly simple use case for MFD where I need to have gpio and hwmon >> >> functionality for a GPIO. >> >> >> >> I read the mfd drivers inside and out by now, but it looks a bit >> >> inconsistent to me. I am not sure what to follow etc. The >> >> documentation seems to be virtually missing which makes my life and >> >> involvement even more difficult. :( >> >> >> >> May I ask for some pointer how to do all this? It would be nice to see >> >> a minimal example where the parent does not do anything else than just >> >> enumerating the sub-device drivers. Is that possible with an empty >> >> probe callback? >> >> >> >> If I understand the regmap correctly (again, it is possible I do not), >> >> then I would not need this. But in general, it is really hard to deal >> >> with the linux kernel in this regard when basic documentations are >> >> missing. >> >> >> >> I hope this would change over time for the posterity. It is a pity >> >> that contributors do not join probably due to this. It is a bit >> >> chaotic, but I hope it can be changed in the future. >> >> >> >> Apologies for my frustration... >> > >> > Due to the nature of the MFD subsystem, there isn't a simple use-case >> > which you can use as a template. It's completely dependent on the >> > device you are trying to enable. There are lots of well written >> > drivers in the subsystem that you can use as good examples though. > >> Well, if you ask me the MFD subsystem is underdocumented, and there is >> some inconsistency between the drivers. It is hard to take any of them >> as a starting point, at least for me. > > Feel free to write some. I'm always happy to take helpful patches. I am not the right person for documentating everything here, especially when I do not even understand basics... I am just trying to figure out my way here. It was more like a hint that this area could take some love. At least, I would personally appreciate it a lot. It is currently somewhat difficult to get involved. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
