Files
kernel/include/linux
Linus Walleij c20cc099b3 regmap: Support accelerated noinc operations
Several architectures have accelerated operations for MMIO
operations writing to a single register, such as writesb, writesw,
writesl, writesq, readsb, readsw, readsl and readsq but regmap
currently cannot use them because we have no hooks for providing
an accelerated noinc back-end for MMIO.

Solve this by providing reg_[read/write]_noinc callbacks for
the bus abstraction, so that the regmap-mmio bus can use this.

Currently I do not see a need to support this for custom regmaps
so it is only added to the bus.

Callbacks are passed a void * with the array of values and a
count which is the number of items of the byte chunk size for
the specific register width.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220816204832.265837-1-linus.walleij@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-08-17 13:00:31 +01:00
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