This serie adds SMBus Alert and SMBus Host-Notify features for the i2c-stm32f7. For that purpore, I propose two enhancements to the i2c framework. 1. Addition of host-notify client handling as part of the i2c-core-smbus so that any other i2c adapter can benefit from it, even those without specific HW support for Host-Notify. 2. Addition of two i2c_algorithm reg_client and unreg_client allowing adapter to take some actions when a client is being probed. Indeed, in case of host-notify, the binding/flag is related to the client and the adapter might want to enable the host-notify feature only when there is a client requesting the host-notify. (Since SMBus host-notify is using the address 0x08 which is a valid I2C address, keeping host-notify always enabled would make the 0x08 I2C slave address non usable). Alain Volmat (4): i2c: smbus: add core function handling SMBus host-notify i2c: addition of client reg/unreg callbacks dt-bindings: i2c-stm32: add SMBus Alert bindings i2c: stm32f7: Add SMBus-specific protocols support .../devicetree/bindings/i2c/st,stm32-i2c.yaml | 4 + drivers/i2c/busses/Kconfig | 1 + drivers/i2c/busses/i2c-stm32f7.c | 198 +++++++++++++++++- drivers/i2c/i2c-core-base.c | 11 + drivers/i2c/i2c-core-smbus.c | 105 ++++++++++ include/linux/i2c-smbus.h | 2 + include/linux/i2c.h | 6 + 7 files changed, 317 insertions(+), 10 deletions(-) -- 2.17.1
