These mask bits are to be used to map the extended register addreseses (which are defined for an unsupported 8-bit pcal chip) to 16 and 24 bit chips (pcal6524).
Reviewed-by: Andy Shevchenko <[email protected]> Signed-off-by: H. Nikolaus Schaller <[email protected]> --- drivers/gpio/gpio-pca953x.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 2b667166e855..c0eb679e60d4 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -56,6 +56,10 @@ #define PCAL6524_DEBOUNCE 0x2d #define PCA_GPIO_MASK 0x00FF + +#define PCAL_GPIO_MASK GENMASK(4, 0) +#define PCAL_PINCTRL_MASK (~PCAL_GPIO_MASK) + #define PCA_INT 0x0100 #define PCA_PCAL 0x0200 #define PCA_LATCH_INT (PCA_PCAL | PCA_INT) -- 2.12.2
