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    Subject[PATCH v4 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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