gpio: pca953x: add more register definitions for pcal6524

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

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index ed58c00..6e3ddea 100644 (file)
--- 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