Re: [PATCH 3/3] gpio: add support for the Diolan DLN-2 USB-GPIO driver
From: Linus Walleij
Date: Fri Aug 29 2014 - 03:16:22 EST
On Wed, Aug 20, 2014 at 1:24 PM, Daniel Baluta <daniel.baluta@xxxxxxxxx> wrote:
> This patch adds GPIO and IRQ support for the Diolan DLN-2 GPIO module.
> Information about the USB protocol interface can be found in the
> Programmer's Reference Manual , see section 2.9 for the GPIO
> module commands and responses.
>  https://www.diolan.com/downloads/dln-api-manual.pdf
> Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxxxx>
Major change required: rewrite this driver to not select IRQ_DOMAIN,
instead select GPIOLIB_IRQCHIP and use the shared infrastructure.
See other drivers that select GPIOLIB_IRQCHIP or grep the git
log to see how this works in practice.
You need to use some container_of() operations.
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