Re: [PATCH 5/9] gpio: Add Fujitsu MB86S7x GPIO driver

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Thu, Nov 20, 2014 at 1:37 PM, Vincent Yang
<vincent.yang.fujitsu@xxxxxxxxx> wrote:

> Driver for Fujitsu MB86S7x SoCs that have a memory mapped GPIO controller.
>
> Signed-off-by: Andy Green <andy.green@xxxxxxxxxx>
> Signed-off-by: Jassi Brar <jaswinder.singh@xxxxxxxxxx>
> Signed-off-by: Vincent Yang <Vincent.Yang@xxxxxxxxxxxxxx>
> Signed-off-by: Tetsuya Nuriya <nuriya.tetsuya@xxxxxxxxxxxxxx>

This is a very simple MMIO GPIO controller.

Why can this *not* just select GPIO_GENERIC and
use drivers/gpio/gpio-generic.c?

You need a smallish driver making use of the generic
MMIO library, see for example
drivers/gpio/gpio-74xx-mmio.c
or any other driver selecting GPIO_GENERIC.

Yours,
Linus Walleij
--
To unsubscribe from this list: send the line "unsubscribe linux-gpio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html