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    SubjectRe: [PATCH 0/4 v4] pin controller subsystem v4
    On Sun, Aug 21, 2011 at 4:42 PM, Barry Song <> wrote:

    > it seems there is not an actual example that gpio requests pin from
    > pinctrl yet. i might give one on SiRFprimaII.

    No good example yet, no.

    The reason is that for the U300 that I use as guinea pig, the
    GPIO driver is tangled up in discussions about how to handle
    the special control mechanics like requesting muxing and
    biasing pins. Right now it seems easier to rewrite all that
    to use the new pinctrl subsystem rather than actually trying
    to work it into the GPIO subsystem first and refactor from
    there, and that needs quite a bit of upfront work...

    Linus Walleij

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