Messages in this thread | | | Date | Mon, 2 Oct 2023 12:05:11 +0300 | From | Andy Shevchenko <> | Subject | Re: [PATCH v1 5/5] gpiolib: cdev: Utilize more bitmap APIs |
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On Wed, Sep 27, 2023 at 10:23:12PM +0800, Kent Gibson wrote: > On Wed, Sep 27, 2023 at 04:59:34PM +0300, Andy Shevchenko wrote: > > On Wed, Sep 27, 2023 at 09:49:35PM +0800, Kent Gibson wrote: > > > On Wed, Sep 27, 2023 at 03:17:06PM +0300, Andy Shevchenko wrote: > > > > On Wed, Sep 27, 2023 at 09:32:11AM +0800, Kent Gibson wrote:
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> > > > Yet, it opens a way to scale this in case we might have v3 ABI that let's say > > > > allows to work with 512 GPIOs at a time. With your code it will be much harder > > > > to achieve and see what you wrote about maintenance (in that case). > > > > > > v3 ABI?? libgpiod v2 is barely out the door! > > > Do you have any cases where 64 lines per request is limiting? > > > > IIRC it was SO question where the OP asks exactly about breaking the 64 lines > > limitation in the current ABI. > > > > > If that sort of speculation isn't premature optimisation then I don't know > > > what is. > > > > No, based on the real question / discussion, just have no link at hand. > > But it's quite a niche, I can agree. > > Let me know if you find a ref to that discussion - I'm curious.
Here it is (read comments as well): https://stackoverflow.com/questions/76307370/control-gpio-from-linux-userspace-with-linux-gpio-h
-- With Best Regards, Andy Shevchenko
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