netdev - Re: [RFC PATCH 05/10] net: dsa: mv88e6xxx: add support for GPIO configuration

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Message-ID: <cd01a032-9ca5-e3f9-8016-cc855218f01c@gmail.com>
Date:   Sun, 4 Feb 2018 11:53:58 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Andrew Lunn <andrew@...n.ch>, netdev <netdev@...r.kernel.org>
Cc:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        sean.wang@...iatek.com, Woojung.Huh@...rochip.com,
        john@...ozen.org, jbe@...gutronix.de, richardcochran@...il.com,
        Brandon Streiff <brandon.streiff@...com>
Subject: Re: [RFC PATCH 05/10] net: dsa: mv88e6xxx: add support for GPIO
 configuration

On 02/03/2018 01:40 PM, Andrew Lunn wrote:
> From: Brandon Streiff <brandon.streiff@...com>
> 
> MV88E6352 and later switches support GPIO control through the "Scratch
> & Misc" global2 register. (Older switches do too, though with a slightly
> different register interface. Only the 6352-style is implemented here.)
> 
> Add a new file, global2_scratch.c, for operations in the Scratch & Misc
> space. Additionally, add a GPIO operations structure to present an
> abstract view over GPIO manipulation.
> 
> Reverse Christmas tree and unsigned has been replaced with unsigned
> int by Andrew Lunn.

I thought one of the comments made on Brian's original submission was to
expose GPIO pins as a proper gpiochip which incidentally might help with
GPIOs on the switch being used for other purposes (e.g; LEDs, etc.), is
that an option here?
-- 
Florian