> From: anish kumar [mailto:anish198519851...@gmail.com]
> Sent: Wednesday, October 10, 2012 8:15 PM
> To: Tc, Jenny
> Cc: myungjoo....@samsung.com; cw00.c...@samsung.com; linux-
> ker...@vger.kernel.org
> Subject: Re: [PATCH] extcon : callback function to read cable property
>
> I think the reason why we have extcon is in first place is to only notify the
> clients of cable connection and disconnection and it is up to the client to
> decide what else to do with the cable such as finding which state it is in and
> other details.
> So I feel this should not be handled in the extcon.
>
> However it is up to the maintainer to decide.
Once the consumer gets the notification, it needs to take some action. One of
the action is to read the cable properties. This can be done by proprietary
calls which is known both to the consumer and the provider. My intention is to
avoid this proprietary calls. Since both the provider and consumer are
communicating with the extcon subsystem , I feel having a callback function of
this kind would help to avoid the use of proprietary calls. Also I agree that
extcon notifier chains are used to notify the cable state (attach/detach). But
if a cable has more than two states (like the charger cable) how do we support
it without having a callback function like this? Let the maintainer take the
final decision.
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