On Tue, Dec 19, 2023 at 05:50:30PM +0100, Pierre-Louis Bossart wrote: > > grep for regmap_.*async - cs_dsp.c is the upstream example in a driver, > > or there's the rbtree cache sync code which uses a back door to go into > > an async mode. Basically just variants of all the normal regmap I/O > > calls with a _complete() call you can use to wait for everything to > > happen. The implementation is a bit heavyweight since it was written to > > work with fairly slow buses. > I spent a fair amount of time this afternoon trying to understand the > regmap_async parts, and I am not following where in the code there is an > ordering requirement/enforcement between async and sync usages. The only actual async implementation is SPI which processes things in order of submission, the sync API wraps the async API. > Also is this just me spacing out or there is no regmap_raw_read_async()? Right, there was never any need.
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