On Tue, Feb 15, 2022 at 11:00 PM Dmitry Osipenko <digetx@xxxxxxxxx> wrote: > > 31.01.2022 02:36, Dmitry Osipenko пишет: > > Problem > > ------- > > > > SoC devices require power-off call chaining functionality from kernel. > > We have a widely used restart chaining provided by restart notifier API, > > but nothing for power-off. > > > > Solution > > -------- > > > > Introduce new API that provides both restart and power-off call chains. > > > > Why combine restart with power-off? Because drivers often do both. > > More practical to have API that provides both under the same roof. > > > > The new API is designed with simplicity and extensibility in mind. > > It's built upon the existing restart and reboot APIs. The simplicity > > is in new helper functions that are convenient for drivers. The > > extensibility is in the design that doesn't hardcode callback > > arguments, making easy to add new parameters and remove old. > > > > This is a third attempt to introduce the new API. First was made by > > Guenter Roeck back in 2014, second was made by Thierry Reding in 2017. > > In fact the work didn't stop and recently arm_pm_restart() was removed > > from v5.14 kernel, which was a part of preparatory work started by > > Guenter Roeck. I took into account experience and ideas from the > > previous attempts, extended and polished them. > > > Rafael and all, do you see anything critical that needs to be improved > in this v6? > > Will be great if you could take this patchset via the power tree if it > looks okay, or give an ack. I need some more time for this, sorry. I'm a bit concerned about seeing no response to this set from anyone. It looks like multiple platforms may be affected by it in principle, so doesn't anyone care?
