So, I picked up the old series from Ian and reworked it significantly. While his series was already an improvement from the driver found in the BSP, it was still not ready for upstream. It should be now :) My idea was to start simple and improve incrementally, so e.g. clock handling was broken, so clocks are always on for starters. Major changes include: * clock handling simplified and adapted to current EMEV clock handling * switch from wait_event to completion mechanism. The old one was basically some kind of completion with custom code around wait_events * dropped using signals; they always cause trouble with I2C * simplified the bus free logic. If it turns out to be too simple, we'd need to switch to the bus_recovery infrastructure probably. But we'd need a test case for that * error handling improved to match subsystem standards * removed some BSP angst code * lots of refactoring to make code simpler, more readable... * bugfixes I also added all the glue code to add clocks, disable reset etc which was missing before. I'd prefer to take the first three patches via i2c myself, and the latter two via Simon's tree. Since V1, there are minor updates fixing issues found in reviews. Thanks! A branch for testing can be found here: git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git renesas/emma-i2c Please test, comment... Thanks! Wolfram Wolfram Sang (5): clk: shmobile: emev2: deassert reset for IIC0/1 i2c: emev2: add binding documentation i2c: emev2: add driver ARM: shmobile: emev2: add IIC cores to dtsi ARM: shmobile: emev2: kzm9d: enable IIC busses .../devicetree/bindings/i2c/i2c-emev2.txt | 22 ++ arch/arm/boot/dts/emev2-kzm9d.dts | 8 + arch/arm/boot/dts/emev2.dtsi | 48 +++ drivers/clk/shmobile/clk-emev2.c | 6 + drivers/i2c/busses/Kconfig | 7 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-emev2.c | 333 +++++++++++++++++++++ 7 files changed, 425 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-emev2.txt create mode 100644 drivers/i2c/busses/i2c-emev2.c -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
