gpio: regmap: Support sparsed fixed direction

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On some regmapped GPIOs apparently only a sparser selection of the lines
(not all) are actually fixed direction.

Support this situation by adding an optional bitmap indicating which
GPIOs are actually fixed direction and which are not.

Link: https://lore.kernel.org/linux-gpio/20260501155421.3329862-10-elder@riscstar.com/
Tested-by: Alex Elder <elder@riscstar.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Alex Elder <elder@riscstar.com>
Link: https://patch.msgid.link/20260511-regmap-gpio-sparse-fixed-dir-v3-1-1429ec453be7@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

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This commit is contained in:

Linus Walleij 2026-05-11 21:43:43 +02:00 • committed by Bartosz Golaszewski

parent 63677aa485

commit 68d801eabd

2 changed files with 40 additions and 4 deletions

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37

drivers/gpio/gpio-regmap.c

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7

include/linux/gpio/regmap.h

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