linux-kernel - Re: [patch 2.6.24-rc6-mm 4/9] gpiolib: avr32 at32ap platform support

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Date:	Sat, 5 Jan 2008 21:49:16 +0100
From:	Haavard Skinnemoen <hskinnemoen@...el.com>
To:	David Brownell <david-b@...bell.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [patch 2.6.24-rc6-mm 4/9] gpiolib: avr32 at32ap platform
 support

On Sat, 5 Jan 2008 12:10:56 -0800
David Brownell <david-b@...bell.net> wrote:

> From: David Brownell <dbrownell@...rs.sourceforge.net>
> 
> Teach AVR32 to use the "GPIO Library" when exposing its GPIOs, so that
> signals on external chips (like GPIO expanders) can easily be used.
> 
> This mostly reorganizes some existing logic, with two minor changes
> in behavior:
> 
>  - The PSR registers are used instead of the previous "gpio_mask"
> values, matching AT91 behavior and removing some duplication between
> that role and that of "pinmux_mask".
> 
>  - NR_IRQs grew to acommodate a bank of external GPIOs.  Eventually
> this number should probably become a board-specific config option.
> 
> There's a debugfs dump of status for the built-in GPIOs, showing which
> pins have deglitching, pullups, or open drain drive enabled, as well
> as the ID string used when requesting each IRQ.
> 
> Signed-off-by: David Brownell <dbrownell@...rs.sourceforge.net>
> Cc: Haavard Skinnemoen <hskinnemoen@...el.com>

Acked-by: Haavard Skinnemoen <hskinnemoen@...el.com>

I'm not going to merge it since the rest of gpiolib isn't in mainline
yet.

Haavard
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