• Martin Peres's avatar
    drm/nouveau/drm/nouveau: add a LED driver for the NVIDIA logo · 8d021d71
    Martin Peres authored
    We received a donation of a Titan which has this useless feature
    allowing users to control the brightness of the LED behind the
    logo of NVIDIA. In the true spirit of open source, let's expose
    that to the users of very expensive cards!
    
    This patch hooks up this LED/PWM to the LED subsystem which allows
    blinking it in sync with cpu/disk/network/whatever activity (heartbeat
    is quite nice!). Users may also implement some breathing effect or
    morse code support in the userspace if they feel like it.
    
    v2:
     - surround the use of the LED framework with ifdef CONFIG_LEDS_CLASS
    
    v3:
     - avoid using ifdefs everywhere, follow the recommendations of
       /doc/Documentation/CodingStyle. Suggested by Emil Velikov.
    
    v4 (Ben):
     - squashed series of fixes from ml
    Signed-off-by: default avatarMartin Peres <martin.peres@free.fr>
    Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
    8d021d71
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