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#
# GPIO infrastructure and expanders
#
config HAVE_GPIO_LIB
bool
help
Platforms select gpiolib if they use this infrastructure
for all their GPIOs, usually starting with ones integrated
into SOC processors.
menu "GPIO Support"
depends on HAVE_GPIO_LIB
config DEBUG_GPIO
bool "Debug GPIO calls"
depends on DEBUG_KERNEL
help
Say Y here to add some extra checks and diagnostics to GPIO calls.
The checks help ensure that GPIOs have been properly initialized
before they are used and that sleeping calls aren not made from
nonsleeping contexts. They can make bitbanged serial protocols
slower. The diagnostics help catch the type of setup errors
that are most common when setting up new platforms or boards.
# put expanders in the right section, in alphabetical order
comment "I2C GPIO expanders:"
comment "SPI GPIO expanders:"
endmenu
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