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    SubjectRe: [patch 0/8] Nesting class_device patches that actually work
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    On Monday 17 October 2005 05:02, Vojtech Pavlik wrote:
    > On Fri, Oct 14, 2005 at 02:14:23PM +0200, Kay Sievers wrote:
    >
    > > Sorry, my previous drawing wasn't correct for the input devices.
    > >
    > > Here is a new picture of the:
    > > - all classes are unique and flat and will stay the same,
    > > even when the hierarchy of the devices changes
    > > - all hierarchy is _only_ in /sys/devices
    > > - virtual and physical devices are both in /sys/devices
    > > proposal.
    >
    > I like the layout.
    >
    > I'm not completely sure whether mouse0 and event0 are the same class,
    > because they have different APIs and protocols. And I believe that class
    > is exactly that - a collection of devices where you can use the same API
    > to access them. A possibility would be to do it like this:
    >
    > > /sys
    > > |-- class
    > > | |-- mouse
    > > | | |-- mice -> ../../devices/mice
    > > | | |-- mouse0 -> ../../devices/platform/i8042/serio0/input0/mouse0
    > > | |---event
    > > | | `-- event0 -> ../../devices/platform/i8042/serio0/input0/event0
    > > | |-- input
    > > | | `-- input0 -> ../../devices/platform/i8042/serio0/input0
    > > | `-- tty
    > > | `-- console -> ../../devices/console
    >
    > It might be too much work to create a new class in each of the
    > handlers, it'd be similar to harddrives and partititions having
    > different classes.
    >

    This illustrates the problem I have with flat classification: "event" is way
    too generic name and "input_event", "input_mouse", etc. is way too ugly.
    "input/event", "input/mouse" is much better IMO.

    --
    Dmitry
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