[Letux-kernel] [PATCH v5 4/7] gpio: pca953x: define masks for addressing common and extended registers

[H. Nikolaus Schaller]

Hi Linus,

> Am 02.05.2018 um 14:36 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
> 
> 
>> Am 02.05.2018 um 14:29 schrieb Andy Shevchenko <andy.shevchenko at gmail.com>:
>> 
>> On Sat, Apr 28, 2018 at 7:31 PM, H. Nikolaus Schaller <hns at goldelico.com> wrote:
>>> 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).
>>> 

>>> 
>>> +#define PCAL_GPIO_MASK         GENMASK(4, 0)
>>> +#define PCAL_PINCTRL_MASK      (~PCAL_GPIO_MASK)
>> 
>> I'm not sure which would be better here
>> 
>> 1) to follow existing style
>> 0x1F
>> 0xE0
>> 
>> 2) to use GENMASK() in both definitions
>> 
>> 3) as it in this patch.
>> 
>> 
>> Whatever Linus prefers.
> 
> Ok, waiting for his suggestion.

Any advice if we should change or keep this?

(Please do not merge before I submit a v6 because there are
some more suggested-by and reviewed-by).

BR and thanks,
Nikolaus