linux-kernel - Re: [PATCH] usb: cp210x: Added support for GPIO (CP2103/4/5)

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Message-ID: <1436626.86ImxHLlqB@ws-stein>
Date:	Fri, 04 May 2012 18:26:58 +0200
From:	Alexander Stein <a.stein@...tec-electronic.com>
To:	Preston Fick <pffick@...il.com>
Cc:	gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
	preston.fick@...abs.com
Subject: Re: [PATCH] usb: cp210x: Added support for GPIO (CP2103/4/5)

Am Montag, 30. April 2012, 15:27:17 schrieb Preston Fick:
> This fix contains several changes that allow toggling of GPIO on CP210x
> devices that support it. Changes include:
> * Added in part number support, necessary to see if the connected device
> supports the GPIO functionality
> * Added two IOCTLs and ioctl function to allow GET/SET of GPIO
> * Added in new #defines for partnum support, new USB requests
> * Changed "Config request types" section to contain more correct definitions
> for request recipient
> 
> Signed-off-by: Preston Fick <preston.fick@...abs.com>

Do you actually need to create new ioctls? You also could support gpiolib and 
create a gpiochip for that.

just my 2 cents,
Alexander

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