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    SubjectRe: legacy VGA device requirements (was: Exposing ROM's though sysfs)
    Date
    On Friday, August 13, 2004 8:53 am, Jon Smirl wrote:
    > What should the API for this look like? We could add a VGA={0/1}
    > attribute to all the VGA devices in sysfs.
    >
    > But then how do you:
    > 1) list all of the conflicting VGA devices in a domain?
    > 2) turn off all the VGA devices in a domain?
    >
    > We could build a bus like directory structure in /sys/class
    >
    > /sys/class/vga/domain1/vga1/(device/driver/enable)
    > /sys/class/vga/domain1/vga2/(device/driver/enable)
    > /sys/class/vga/domain2/vga1/(device/driver/enable)
    > /sys/class/vga/domain2/vga2/(device/driver/enable)
    >
    > Then add an enable attribute in the domain directories that would shut
    > off all of the subdevices.
    >
    > /sys/class/vga/domain1/enable
    > /sys/class/vga/domain2/enable
    >
    > But the vga driver is not going to be attached to a device. Is there an
    > easy way to build this is sysfs?

    Maybe we need a display driver class? Could we reuse the dri drivers for that
    purpose?

    Jesse
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