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    SubjectRe: [RFC v2 6/8] gpu: drm: tegra: Remove redundant host1x
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    On Wed, Dec 5, 2012 at 12:47 PM, Terje Bergström <tbergstrom@nvidia.com> wrote:
    > You're right in that binding to a sub-device is not a nice way. DRM
    > framework just needs a "struct device" to bind to. exynos seems to solve
    > this by introducing a virtual device and bind to that. I'm not sure if
    > this is the best way, but worth considering?

    Note that I'm not too happy about the fact that drm wants a struct
    device to register a drm device. This all made a lot of sense back in
    the days when drm drivers this this fancy shadow attaching to allow
    drm to use a driver for rendering cooperatively with a fbdev driver.
    Today there's not much reason for that anymore imo, and I'd welcome
    patches to allow drivers to simply register a drm device (and remove
    all the newer registration functions for usb/platform/whatever
    drivers, moving the device handling into drivers). Note that it's a
    bit work, since not-really-required abstraction (which was useful back
    when the drm drivers have been shared with *BSD, but pointless now)
    like the drm irq support needs to be moved away to a pci-dev legacy
    thing only - it doesn't really buy a kms driver anything above&beyond
    calling request_irq() itself.

    So feel free to burn this down, I'll be happy to carry wood to the
    pyre in the from of reviews (not much time for more right now ...).

    Cheers, Daniel
    --
    Daniel Vetter
    Software Engineer, Intel Corporation
    +41 (0) 79 365 57 48 - http://blog.ffwll.ch
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