Re: [RFC] gpiolib: introduce descriptor-based GPIO interface

From: Linus Walleij
Date: Fri Dec 07 2012 - 03:24:00 EST

On Fri, Dec 7, 2012 at 3:06 AM, Alex Courbot <acourbot@xxxxxxxxxx> wrote:
> On Thursday 06 December 2012 22:42:59 Grant Likely wrote:
>> how about "gpio_chip_hwnum()" to somewhat match irqdomain convention?
> Sure, matching existing interfaces is better. "git grep hwnum" does not seem
> to reveal much related to irqdomain though?

I think Grant is referring to the similarity with hwirq. Check:

For example GPIO drivers using irqdomain often look up the
trigging local GPIO pin offset from the irqdomain descriptor
passed with the interrupt like this:

static void foo_gpio_irq_unmask(struct irq_data *d)
int offset = d->hwirq;

Maybe "hwgpio" is an even better choice for the name of this.

Linus Walleij
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