Hi Heikki These patches add support for runtime power management for UCSI CCGx driver. I have tested them with NVIDIA GPU card which has i2c interface to talk to CCG controller. I have added runtime pm support for the i2c bus driver as well. First two patches add support for runtime pm in i2c bus driver and UCSI CCGx driver. Last two patches add workaround for an old version of ccg firmware which has known issue of not missing interrupt when a device is connected to runtime resume the ccg controller. The workaround is needed because if a GPU card doesn't get new firmware but gets new kernel then also it should continue to work. Thanks Ajay Ajay Gupta (4): i2c: nvidia-gpu: add runtime pm support usb: typec: ucsi: ccg: enable runtime pm support i2c: nvidia-gpu: resume ccgx i2c client usb: typec: ucsi: ccg: add runtime pm workaround drivers/i2c/busses/i2c-nvidia-gpu.c | 37 ++++++-- drivers/usb/typec/ucsi/ucsi.c | 1 + drivers/usb/typec/ucsi/ucsi_ccg.c | 138 +++++++++++++++++++++++++++- 3 files changed, 165 insertions(+), 11 deletions(-) -- 2.17.1
