[PATCH 07/10] pinctrl: add pinctrl driver for Rockchip SoCs

[Stephen Warren]

On 06/05/2013 01:01 AM, Linus Walleij wrote:
> On Tue, Jun 4, 2013 at 2:05 PM, Heiko Stübner <heiko at sntech.de> wrote:
...
>> The only problem is the pull stuff mentioned above that is either pull up or
>> down without the driver having knowledge about it. And generic_pinconf only
>> knows about them separately right now.
> 
> Create a separate patch adding PIN_CONFIG_BIAS_PULL_AUTO
> to include/linux/pinctrl/pinconf-generic.h, don't forget the
> kerneldoc, and patching drivers/pinctrl/pinconf-generic.c.

"AUTO" sounds really rather generic. Based on just the word "AUTO", I
have no idea if it's a HW- or SW-supplied default, or what the algorithm
is for determining the automatically selected value. Perhaps
s/AUTO/PIN_DEFAULT/ or something like that?

While the concept is simple enough, it's unusual enough that such a
patch would hopefully have a comment containing a full explanation of
exactly what this option means.