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    SubjectRe: [PATCH] Map volume and brightness events on thinkpads
    On Tue, Oct 16, 2007 at 12:11:53PM -0200, Henrique de Moraes Holschuh wrote:
    > On Tue, 16 Oct 2007, Matthew Garrett wrote:
    > > are sent via the keyboard controller, such as the wireless and touchpad
    > > disable keys on my HP. There are Dells that do the same for brightness
    >
    > It is not clear to me if they are notifications or not. Does the firmware
    > act on the keys by itself? If it does, then they are notifications. If it
    > does not, then they are regular hot keys and there is no controversy whether
    > they belong on the input layer or not (they do).

    Yes, the firmware acts upon it.

    > 2. I am against sending notification events through input **that look
    > exactly the same as regular events**. That is not a wise design choice IMO,
    > it is a very dirty hack.

    Userspace is going to have to deal with this case anyway. Some vendors
    simply don't let us distinguish.

    > 3. We have a backlight class, a LED class, a rf-kill class and ALSA mixers.
    > Is there a real reason to pester Dmitry about the issue, if we can use these
    > alternate paths (that are indeed more generic and more suited for the job)?

    It's not always going to be possible to tie notifications into a class
    device - in the Dell case, for instance, interacting with the backlight
    requires you to use a 200Kb library so has to be done in userspace.

    --
    Matthew Garrett | mjg59@srcf.ucam.org
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