PCAL chips ("L" seems to stand for "latched") have additional registers starting at address 0x40 to control the latches, interrupt mask, pull-up and pull down etc.
Signed-off-by: H. Nikolaus Schaller hns@goldelico.com --- 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 bd0593afdae3..fecd0e0aba93 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -41,9 +41,13 @@ #define PCA957X_MSK 0x06 #define PCA957X_INTS 0x07
+#define PCAL953X_OUT_STRENGTH 0x20 #define PCAL953X_IN_LATCH 0x22 #define PCAL953X_PULL_EN 0x23 #define PCAL953X_PULL_SEL 0x24 +#define PCAL953X_INT_MASK 0x25 +#define PCAL953X_INT_STAT 0x26 +#define PCAL953X_OUT_CONF 0x27
#define PCA_GPIO_MASK 0x00FF #define PCA_INT 0x0100