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    SubjectRe: [PATCH v5 10/12] gpio: Support for unified device properties interface
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    On October 17, 2014 2:16:00 PM CEST, "Rafael J. Wysocki" <rjw@rjwysocki.net> wrote:
    >From: Mika Westerberg <mika.westerberg@linux.intel.com>
    >
    >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]_get_named_gpiod_from_child() that takes a child firmware
    >node pointer as its second argument (the first one is the parent device
    >itself), finds the GPIO using whatever is the underlying firmware
    >method, and requests the GPIO properly.

    Could we also have a wrapper around this function without a "name" argument, using just the index?

    Arnd


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