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Subject[PATCH v4 2/7] gpio: pca953x: add more register definitions for pcal953x
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 <>
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
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