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
+ These checks help ensure that GPIOs have been properly initialized
+ before they are used, and that sleeping calls are not made from
+ non-sleeping 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.
number for these GPIOs.
config GPIO_PCA953X
- tristate "PCA953x, PCA955x, and MAX7310 I/O ports"
+ tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
depends on I2C
help
Say yes here to provide access to several register-oriented
4 bits: pca9536, pca9537
- 8 bits: max7310, pca9534, pca9538, pca9554, pca9557
+ 8 bits: max7310, pca9534, pca9538, pca9554, pca9557,
+ tca6408
- 16 bits: pca9535, pca9539, pca9555
+ 16 bits: pca9535, pca9539, pca9555, tca6416
This driver can also be built as a module. If so, the module
will be called pca953x.