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SubjectRe: [PATCH 2/2] misc: add driver support for MAX8997 MUIC
Date
On Monday 12 December 2011, Samuel Ortiz wrote:
> On Thu, Nov 24, 2011 at 06:12:18PM +0900, Donggeun Kim wrote:
> > The MUIC function in MAX8997 device can be used as
> > a USB port detector and switch.
> > This patch supports the MUIC feature of MAX8997.
>
> I'm queueing this one to my for-next branch as it depends on your previous MFD
> patch.
> I'm also cc'ing Arnd in case he has some objections.

Thanks for the notification!

First of all, every new user space interface including new sysfs files
and uevent messages needs documentation in the Documentation/ABI
directory.

The part that is not clear to me is how this new driver fits in
with the first fsa9480 driver and the currently discussed extcon
subsystem, apparently all written by the same team at Samsung.
Is this misc driver still useful when the extcon framework gets
merged?

I very much believe that we should avoid introducing user interfaces
in a driver specific way when we have multiple pieces of hardware
that try to do the same thing. The extcon subsystem seems to handle
this correctly on the high-level (I have not done a detailed
review yet but I trust that it will be ok), so I don't understand
why we want another driver for the MAX8997 MUIC.

Arnd


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