diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/Kconfig | 32 | ||||
| -rw-r--r-- | drivers/gpio/Makefile | 4 |
2 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig new file mode 100644 index 000000000000..560687c4667e --- /dev/null +++ b/drivers/gpio/Kconfig @@ -0,0 +1,32 @@ +# +# 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 diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile new file mode 100644 index 000000000000..369e4fc432e3 --- /dev/null +++ b/drivers/gpio/Makefile @@ -0,0 +1,4 @@ +# gpio support: dedicated expander chips, etc + +ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG + |