From mboxrd@z Thu Jan 1 00:00:00 1970 From: marvin24@gmx.de (Marc Dietrich) Date: Thu, 11 Sep 2014 14:06:06 +0200 Subject: [RFC 0/4] i2c: slave support framework for Linux devices In-Reply-To: <1410274470-12712-1-git-send-email-wsa@the-dreams.de> References: <1410274470-12712-1-git-send-email-wsa@the-dreams.de> Message-ID: <5110809.ZO3zEWmmzZ@fb07-iapwap2> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hello Wolfram, Am Dienstag, 9. September 2014, 16:54:26 schrieb Wolfram Sang: > Finally, here is my take on the often desired feature that Linux can not > only be an I2C master, but also an I2C slave. Compared to my draft sent out > last week, this RFC has been tested on hardware (Renesas Lager board) and > works \o/ first, thanks for taking up this job. > One big part still missing is documentation, so brave ones need to "use the > source". However, this approach turned out to be even less intrusive than > expected, so that is hopefully a good sign. > > 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. >>From what I can tell, this approach may also work with our driver (staging/nvec). I especially like the split between the adapter and the client support. I only have one question so far regarding the device tree representation attached patch 4. Marc