Re: [PATCH 0/2] gpio: pca953x: Add interrupt mask support for pca953x chips

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Mon, Oct 10, 2022 at 3:23 PM Levente Révész
<levente.revesz@xxxxxxxxxx> wrote:

> Some chips in the pca953x family have an interrupt mask register in
> addition to the standard 4 registers:
>
>     0: INPUT
>     1: OUTPUT
>     2: POLARITY
>     3: CONFIGURATION
>     4: INTERRUPT MASK
>
> Chips with this register:
>
>     - pca9505
>     - pca9506
>     - pca9698
>
> The interrupt mask register defaults to all interrupts disabled, so
> interrupts are unusable unless the driver sets this register.
>
> Interrupt masking is already implemented for pcal chips. That
> implementation could be extended to support this register as well.
>
> This patch series adds support for the interrupt mask register in
> mentioned pca chips.

Added some PCA953x users to the To-line, lots of people use
this driver so please review!

Yours,
Linus Walleij