linux-kernel - Re: [PATCH 0/3] i2c: slave support framework for Linux devices

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Date:	Thu, 11 Dec 2014 22:26:32 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	linux-i2c@...r.kernel.org
Cc:	linux-sh@...r.kernel.org, Magnus Damm <magnus.damm@...il.com>,
	Simon Horman <horms@...ge.net.au>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Jean Delvare <jdelvare@...e.de>
Subject: Re: [PATCH 0/3] i2c: slave support framework for Linux devices

On Tue, Nov 18, 2014 at 05:04:52PM +0100, Wolfram Sang wrote:
> Finally, here is my take on the often desired feature that Linux can not only
> be an I2C master, but also an I2C slave. Since RFC, most open issues have been
> dealt with. Find details in the patch descriptions. Documentation is still
> missing and will come later this or next week, but surely early enough for
> the 3.19 release which this series wants to go in. Yet, I'd like to encourage
> code-review and build-testing already.
> 
> Basically, an I2C slave is a standard I2C client providing a callback function.
> When registering as a slave, the connection to the I2C adapter is made which
> uses the callback when a slave event happens. That splits the HW support
> (enabling slave mode on the adapter) and SW support (here a generic eeprom
> simulator) nicely IMO.
> 
> The patches have been tested with a Renesas R8A7790 based Lager board. They are
> based on top of 3.18-rc5, but will easily apply to renesas/devel. A git tree
> can be found here:
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/slave-support
> 
> Comments welcome! Thanks,

This series applied to for-next (with some typos corrected)!

I think I have an idea to improve the API thanks to Uwe's comments.
Still, I'd like to send out my pull request soonish and fix this
later. It won't be a massive overhaul, so I think it is okay.


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