linux-kernel - Re: [PATCH] gpiolib: Add gpio_detect, gpio_debounce and gpio_alt

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Date:	Tue, 16 Jun 2009 09:28:48 +0800
From:	Alek Du <alek.du@...el.com>
To:	Ben Dooks <ben-linux@...ff.org>
CC:	Florian Fainelli <florian@...nwrt.org>,
	Ben Dooks <ben-linux@...ff.org>,
	Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpiolib: Add gpio_detect, gpio_debounce and
 gpio_alt_func features to GPIOLIB

On Mon, 15 Jun 2009 21:09:06 +0800
Ben Dooks <ben-linux@...ff.org> wrote:

> > 
> > I would expect your architecture IRQ handler to have a set_type callback for 
> > the GPIO lines capables of generating an interrupt. See how we have beeing 
> > doing it for rb532 for instance: 
> > http://www.linux-mips.org/git?p=linux-queue.git;a=blob;f=arch/mips/rb532/irq.c;h=f07882029a90d3d155c17b462812c2936229458c;hb=HEAD#l173
> 
> Yes, or if the GPIO driver is exporting interrupts, the relevant handler
> for that chip should have the .set_type method defined.
> 

In the .set_type method, you finally will call the GPIO driver's function to set interrupt trigger mode, right?
Current GPIOLIB do not provide such an interface. Current driver always exports a separate function to do that --
that's not good.
My patch provide a general API to do that.


Thanks,
Alek
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