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    SubjectRe: [PATCH 2.6.23-rc2] hwmon: HP Mobile Data Protection System 3D ACPI driver (resend)
    On Sat 2007-08-25 13:36:00, Yan Burman wrote:
    > Pavel Machek wrote:
    > >On Sat 2007-08-11 14:26:02, Yan Burman wrote:
    > >
    > >>HP Mobile Data Protection System 3D ACPI driver. Similar to hdaps in
    > >>functionality.
    > >>This driver provides 4 kinds of functionality:
    > >>1) Creates a misc device /dev/accel that acts similar to /dev/rtc and
    > >>unblocks
    > >>the process reading from it when the device detects free-fall interrupt
    > >>2) Functions as an input class device to provide similar functionality to
    > >>hdaps, in order to be able to use the laptop as a joystick
    > >>3) Provides an interface similar to hdaps, so that hdapsd could work with
    > >>it
    > >>4) Makes it possible to power the device off.
    > >>
    > >
    > >I assume this means 'power the sensor down'? What is interface for
    > >that?
    > >
    > >Aha, /sys. Could we simply power off the device when its input device
    > >is not opened?
    > >
    > >
    > No, we can't since the sys interface provides the position info and some
    > applications (hdaps apps for example) use this interface.

    One more reason not to use /sys to access the position data.

    --
    (english) http://www.livejournal.com/~pavelmachek
    (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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