Re: [PATCH 3/3] gpio: syscon: Add support for the Xylon LogiCVC GPIOs

From: Linus Walleij
Date: Thu Sep 12 2019 - 05:17:30 EST

On Tue, Sep 10, 2019 at 4:29 PM Paul Kocialkowski
<paul.kocialkowski@xxxxxxxxxxx> wrote:

> The LogiCVC display hardware block comes with GPIO capabilities
> that must be exposed separately from the main driver (as GPIOs) for
> use with regulators and panels. A syscon is used to share the same
> regmap across the two drivers.
> Since the GPIO capabilities are pretty simple, add them to the syscon
> GPIO driver.
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx>

I'm fine with this for now, but the gpio-syscon driver is now growing
big and when you use it you are getting support for a whole bunch
of systems you're not running on included in your binary.

We need to think about possibly creating drivers/gpio/syscon
and split subdrivers into separate files and config options
so that people can slim down to what they actually need.

> + *bit = 1 << offset;

Please do this:

#include <linux/bits.h>

*bit = BIT(offset);

Linus Walleij