On Mon, 19 Feb 2024 16:33:18 -0600 David Lechner <dlechner@xxxxxxxxxxxx> wrote: > This adds a new spi_optimize_message() function that can be used to > optimize SPI messages that are used more than once. Peripheral drivers > that use the same message multiple times can use this API to perform SPI > message validation and controller-specific optimizations once and then > reuse the message while avoiding the overhead of revalidating the > message on each spi_(a)sync() call. > > Internally, the SPI core will also call this function for each message > if the peripheral driver did not explicitly call it. This is done to so > that controller drivers don't have to have multiple code paths for > optimized and non-optimized messages. > > A hook is provided for controller drivers to perform controller-specific > optimizations. > > Suggested-by: Martin Sperl <kernel@xxxxxxxxxxxxxxxx> > Link: https://lore.kernel.org/linux-spi/39DEC004-10A1-47EF-9D77-276188D2580C@xxxxxxxxxxxxxxxx/ > Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx> Very nice. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
