linux-kernel - Re: [PATCH] extcon: Split out extcon header file for consumer and provider device

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Message-ID: <20171003085848.tma5l5lq4yavddli@localhost.localdomain>
Date:   Tue, 3 Oct 2017 09:58:48 +0100
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     Chanwoo Choi <cw00.choi@...sung.com>
CC:     <balbi@...nel.org>, <kishon@...com>, <sre@...nel.org>,
        <gregkh@...uxfoundation.org>, <lee.jones@...aro.org>,
        <heiko@...ech.de>, <yoshihiro.shimoda.uh@...esas.com>,
        <krzk@...nel.org>, <b.zolnierkie@...sung.com>,
        <maxime.ripard@...e-electrons.com>, <wens@...e.org>,
        <chanwoo@...nel.org>, <myungjoo.ham@...sung.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-pm@...r.kernel.org>,
        <linux-usb@...r.kernel.org>, <linux-renesas-soc@...r.kernel.org>,
        <linux-rockchip@...ts.infradead.org>
Subject: Re: [PATCH] extcon: Split out extcon header file for consumer and
 provider device

On Fri, Sep 29, 2017 at 09:01:45AM +0900, Chanwoo Choi wrote:
> The extcon has two type of extcon devices as following.
> - 'extcon provider deivce' adds new extcon device and detect the
>    state/properties of external connector. Also, it notifies the
>    state/properties to the extcon consumer device.
> - 'extcon consumer device' gets the change state/properties
>    from extcon provider device.
> Prior to that, include/linux/extcon.h contains all exported API for
> both provider and consumer device driver. To clarify the meaning of
> header file and to remove the wrong use-case on consumer device,
> this patch separates into extcon.h and extcon-provider.h.
> 
> [Description for include/linux/{extcon.h|extcon-provider.h}]
> - extcon.h includes the extcon API and data structure for extcon consumer
>   device driver. This header file contains the following APIs:
>   : Register/unregister the notifier to catch the change of extcon device
>   : Get the extcon device instance
>   : Get the extcon device name
>   : Get the state of each external connector
>   : Get the property value of each external connector
>   : Get the property capability of each external connector
> 
> - extcon-provider.h includes the extcon API and data structure for extcon
>   provider device driver. This header file contains the following APIs:
>   : Include 'include/linux/extcon.h'
>   : Allocate the memory for extcon device instance
>   : Register/unregister extcon device
>   : Set the state of each external connector
>   : Set the property value of each external connector
>   : Set the property capability of each external connector
> 
> Cc: Felipe Balbi <balbi@...nel.org>
> Cc: Kishon Vijay Abraham I <kishon@...com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: Sebastian Reichel <sre@...nel.org>
> Cc: Lee Jones <lee.jones@...aro.org>
> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
> ---
>  drivers/extcon/extcon-arizona.c               |   2 +-

Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>

Thanks,
Charles