The purpose of this patchset is to enable Linux to be a I2C slave by enabling the slave functionality in the designware I2C controller and at the same time it does some cleaning of the existing code.
The patch 1 is for cleaning and commentary fix. The patch 2 refactors the original i2c-designware-core and extracts all master functions to a i2c-designware-master source file as suggested by Andy Shevchenko when I first submited the update. The patch 3 then separates the MASTER flow from the common flow. The patch 4 introduces the SLAVE necessary definitions to the i2c-designware library and adds a how-to-use example to the designware.txt in device tree bindings. The patch 5 adds the necessary functions to give the ability to be a SLAVE to the controller and for that changes also had to be made in the Makefile and Kconfig. The patch 6 enables the SLAVE mode to be detected by the platform module. The functionality was tested using the hardware independent slave-eeprom driver based on top of i2c/for-next. The tree I used can be found here: https://git.kernel.org/cgit/linux/kernel/git/wsa/linux.git/log/?h=i2c/for-next Luis Oliveira (6): i2c: designware: Cleaning and comment style fixes. i2c: designware: refactoring of the i2c-designware i2c: designware: MASTER mode as separated driver i2c: designware: introducing I2C_SLAVE definitions i2c: designware: add SLAVE mode functions i2c: designware: enable SLAVE in platform module .../devicetree/bindings/i2c/i2c-designware.txt | 16 +- drivers/i2c/busses/Kconfig | 15 +- drivers/i2c/busses/Makefile | 2 + drivers/i2c/busses/i2c-designware-common.c | 280 +++++++++++++ drivers/i2c/busses/i2c-designware-core.h | 180 +++++++- ...c-designware-core.c => i2c-designware-master.c} | 465 +++------------------ drivers/i2c/busses/i2c-designware-pcidrv.c | 8 +- drivers/i2c/busses/i2c-designware-platdrv.c | 117 ++++-- drivers/i2c/busses/i2c-designware-slave.c | 403 ++++++++++++++++++ 9 files changed, 1033 insertions(+), 453 deletions(-) create mode 100644 drivers/i2c/busses/i2c-designware-common.c rename drivers/i2c/busses/{i2c-designware-core.c => i2c-designware-master.c} (60%) create mode 100644 drivers/i2c/busses/i2c-designware-slave.c -- 2.11.0
