On Mon, Jun 17, 2019 at 10:31:17AM +0200, Stefan Roese wrote: > This patch adds a driver for the I2C controller found on the MediaTek > MT7621/7628/7688 SoC's. The base version of this driver was done by > Steven Liu (according to the copyright and MODULE_AUTHOR lines). It > can be found in the OpenWRT repositories (v4.14 at the time I looked). > > The base driver had many issues, which are disccussed here: > > https://en.forum.labs.mediatek.com/t/openwrt-15-05-loads-non-working-i2c-kernel-module-for-mt7688/1286/3 > > From this link an enhanced driver version (complete rewrite, mayor > changes: support clock stretching, repeated start, ACK handling and > unlimited message length) from Jan Breuer can be found here: > > https://gist.github.com/j123b567/9b555b635c2b4069d716b24198546954 > > This patch now adds this enhanced I2C driver to mainline. > > Changes by Stefan Roese for upstreaming: > - Add devicetree bindings > - checkpatch clean > - Use module_platform_driver() > - Minor cosmetic enhancements > - Removed IO warpped functions > - Use readl_relaxed_poll_timeout() and drop poll_down_timeout() > - Removed superfluous barrier() in mtk_i2c_reset() > - Use i2c_8bit_addr_from_msg() > - Added I2C_FUNC_PROTOCOL_MANGLING > - Removed adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD; > > Signed-off-by: Stefan Roese <sr@xxxxxxx> > Tested-by: René van Dorst <opensource@xxxxxxxxxx> > Cc: Jan Breuer <jan.breuer@xxxxxxxxx> > Cc: John Crispin <john@xxxxxxxxxxx> > Cc: René van Dorst <opensource@xxxxxxxxxx> > Cc: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Applied to for-next, thanks!
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