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Subject: Re: [virtio-dev] Re: [virtio-comment] [PATCH v2] virtio-gpio: add formal specification
On 01.07.21 11:01, Arnd Bergmann wrote:
Agreed, interrupt support is obviously something that can not be retrofitted easily if you don't get it right from the start.
It's basically present, the basic version (as now writting in this spec) just can't do hardware masking - that part is planned as an optional feature (which I haven't yet put into that spec version, since I wanted to get the basic version finished up before doing the optional features). Actually, the optional feature will just add another message for mask/unmask. I'll yet having conversations w/ HW engineers on certain aspects, e.g. automatic masking (yes/no/configurable ?). There're also other more sophisticated features like HW debounce, pinmux, etc, that are to come later - as *optional* features that some device may or may not support. Note that this isn't just about moving drivers into some VMM, but also about actual hardware. --mtx -- --- Hinweis: unverschlÃsselte E-Mails kÃnnen leicht abgehÃrt und manipuliert werden ! FÃr eine vertrauliche Kommunikation senden Sie bitte ihren GPG/PGP-SchlÃssel zu. --- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@metux.net -- +49-151-27565287
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