The pcal6524 has another set of registers to fine control
the interrupt handling.

Signed-off-by: H. Nikolaus Schaller <h...@goldelico.com>
---
 drivers/gpio/gpio-pca953x.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index fecd0e0aba93..2b667166e855 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -49,6 +49,12 @@
 #define PCAL953X_INT_STAT      0x26
 #define PCAL953X_OUT_CONF      0x27
 
+#define PCAL6524_INT_EDGE      0x28
+#define PCAL6524_INT_CLR       0x2a
+#define PCAL6524_IN_STATUS     0x2b
+#define PCAL6524_OUT_INDCONF   0x2c
+#define PCAL6524_DEBOUNCE      0x2d
+
 #define PCA_GPIO_MASK          0x00FF
 #define PCA_INT                        0x0100
 #define PCA_PCAL               0x0200
-- 
2.12.2

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