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Subject[PATCH v5 4/7] gpio: pca953x: define masks for addressing common and extended registers
Date
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).

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
drivers/gpio/gpio-pca953x.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 2b667166e855..fc863faa3ce4 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -56,6 +56,9 @@
#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
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