Messages in this thread | | | Date | Mon, 3 Nov 2014 10:43:46 +0100 | Subject | Re: [RFC Patch] gpio: add GPIO hogging mechanism | From | Linus Walleij <> |
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On Wed, Oct 29, 2014 at 9:53 AM, Pantelis Antoniou <pantelis.antoniou@gmail.com> wrote:
> 3) I’m not very fond of having this being part of the gpio controller. This > configuration conceptually has little to do with the gpio controller per se, > it is more of a board specific thing. Why not come up with a gpio-hog driver that > references GPIOs? That way with a single gpio-hog driver instance you could setup > all the GPIO-hogging configuration for all GPIOs on the board, even one that > lie on different GPIO controllers.
You have a point. But it's vital that we set up hogs at the same time as the gpio_chip is probed, not later, or there may be a race as to who gets the GPIO line, and that should be avoided at any cost.
Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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