lkml.org 
[lkml]   [2005]   [Nov]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: best way to handle LEDs
    On Wed, 2 Nov 2005, Pavel Machek wrote:
    > > > yellow off: not charging
    > > > yellow on: charging
    > > > yellow fast blink: charge error
    > > >
    > > > I think even slow blinking was used somewhere. I have some code from
    > > > John Lenz (attached); it uses sysfs interface, exports led collor, and
    > > > allows setting different frequencies.
    > > >
    > > > Is that acceptable, or should some other interface be used?
    > >
    > > IMHO reducing digital outputs to LEDs goes not far enough. All System-
    > > on-Chip CPUs have General Purpose I/O pins today, which can act as
    > > inputs or outputs and may be used for LEDs, matrix keyboard lines,
    >
    > We have some leds that are *not* on GPIO pins (like driven by
    > ACPI). We'd like to support those, too.

    I though ACPI was software? These LEDs have to be driven by some hardware,
    right?

    Gr{oetje,eeting}s,

    Geert

    --
    Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

    In personal conversations with technical people, I call myself a hacker. But
    when I'm talking to journalists I just say "programmer" or something like that.
    -- Linus Torvalds
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-11-03 09:41    [W:0.077 / U:0.360 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site