Messages in this thread | | | Subject | Re: [PATCH v11 2/7] anybus-s: support HMS Anybus-S bus | From | "Enrico Weigelt, metux IT consult" <> | Date | Wed, 17 Apr 2019 17:25:52 +0200 |
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On 17.04.19 00:00, Sven Van Asbroeck wrote:
Hi,
>> But this port supports probing ?>> (so it's, bit like a single usb port w/o hub ;-))> > Yes, that's exactly it. Okay, then your approach introducing a bus_type is correct, IMHO.
>> I guess that things like introducing new bus types or device classes>> are something that subsystem maintainers wanna be aware of :)>>> > fieldbus_dev is a new subsystem. > At first I attempted to mainline the anybus-s drivers with a 'roll-your-own' > userspace API, but the feedback I got was: this userspace API should > really be generic... So this is my attempt to create a generic fieldbus_dev > API !
Yes, it's an own class of devices, many other (semantically) simiar devices out there. Therefore, an own subsystem for that is a good idea.
But: I'd rather call it it "iec61158" instead of fieldbus", as there're lots of different fieldbus types (eg. MVB has pretty different semantics than iec61158)
> It's almost certainly insufficient, but it's a start. Ideally, this > should get lots of review from people in the industry, but response > to this patchset has been underwhelming.
It's still a niche, at least for Linux. Only few people here ever had their hands on such PLC systems.
--mtx
-- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@metux.net -- +49-151-27565287
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