Re: [RFC PATCH v2 07/16] gpio: Add support for unified device properties interface
From: Linus Walleij <hidden>
Date: 2014-09-23 15:25:53
Also in:
linux-acpi, lkml
On Tue, Sep 16, 2014 at 1:52 PM, Mika Westerberg [off-list ref] wrote:
Some drivers need to deal with only firmware representation of its GPIOs. An example would be a GPIO button array driver where each button is described as a separate firmware node in device tree. Typically these child nodes do not have physical representation in the Linux device model. In order to help device drivers to handle such firmware child nodes we add dev[m]_node_get_named_gpiod() that takes a firmware node pointer as parameter, finds the GPIO using whatever is the underlying firmware method, and requests the GPIO properly. Signed-off-by: Mika Westerberg <mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
I have a hard time figuring out if this is what we want for common accessors between DT and ACPI. Can I get some input from Grant, Arnd, Mark, Darren...? Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html