Am 16.05.2018 um 21:50 schrieb Andy Shevchenko [off-list ref]:

On Wed, May 16, 2018 at 8:01 PM, H. Nikolaus Schaller [off-list ref] wrote:

quoted

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).

Reviewed-by: Andy Shevchenko <redacted>
Signed-off-by: H. Nikolaus Schaller <redacted>
---
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 2b667166e855..c0eb679e60d4 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c

@@ -56,6 +56,10 @@

#define PCAL6524_DEBOUNCE      0x2d

#define PCA_GPIO_MASK          0x00FF
+
+#define PCAL_GPIO_MASK         GENMASK(4, 0)
+#define PCAL_PINCTRL_MASK      (~PCAL_GPIO_MASK)
+

I give second thought about it, and think
either plain values, or second converted to its own explicit GENMASK
would be better.

(most confusing part to me is unknowness of the side of PINCTRL part
in the mask)

I see.

Then, I'd also prefer plain values.

If ok, I can send a v7 tomorrow.

BR,
Nikolaus