linux-kernel - GPIO: Handling multiple lines at once

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Message-ID: <4D35BCA1.1050002@antcom.de>
Date:	Tue, 18 Jan 2011 17:15:29 +0100
From:	Roland Stigge <stigge@...com.de>
To:	linux-kernel@...r.kernel.org
Subject: GPIO: Handling multiple lines at once

Hi,

in the standard gpio interface (see Documentation/gpio.txt), we have an
interface to manipulate single GPIO lines.

Several drivers are implementing an interface for devices that can
handle multiple lines at once. E.g. Maxim MAX7301
(drivers/gpio/max7301.c). There, you can get/set/configure 8 bits at
once which is really helpful if you are handling 8 bit data as
bytes/characters via the lines.

Is there an appropriate interface for this case that I'm somehow missing
from the docs and the code?

Or do I need to create it myself?

Or is this a use case not considered "GPIO" at all?

Please CC me.

Thanks in advance!

Roland
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