Re: [RFC PATCH v2 07/16] gpio: Add support for unified device properties interface

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Sep 16, 2014 at 1:52 PM, Mika Westerberg
<mika.westerberg@xxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx>

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 linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux IBM ACPI]     [Linux Power Management]     [Linux Kernel]     [Linux Laptop]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux