title: IIC; add atomic_xfer callbacks
team: IO
key: 591f9c90-70ad-11ea-9962-8faea49ce5f9
assignee: Ulrich
status: Done

upstream:
  - torvalds: a49cc1fe9d64a2dc4e19b599204f403e5d25f44b # i2c: sh_mobile: implement atomic transfers

comments:
  - "Ulrich prototypes the IIC driver first; can refactor non-atomic xfer routine"
  - "IIC v1: https://patchwork.kernel.org/patch/11598605/"
  - "IIC v2: https://patchwork.kernel.org/patch/11612451/"
  - "IIC prototype tested by Wolfram, works"
  - "need to ensure how to keep PM domain active that late, trying the reboot notifier"
  - "reboot notifier v1: https://patchwork.kernel.org/patch/11749121/"
  - "IIC v3: https://patchwork.kernel.org/patch/11792759/"
  - "IIC v4: https://patchwork.kernel.org/patch/11804027/"
  - "IIC merged"