drm/i915/dp: make backlight bl_power control power sequencer backlight

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This lets the userspace switch off the backlight using the backlight
class sysfs bl_power file. The switch is done using the power sequencer;
the backlight PWM, and everything else, remains enabled. The display
backlight won't draw power, but for maximum power savings the encoder
needs to be switched off.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed_by: Clinton Taylor <Clinton.A.Taylor@intel.com>
Tested_by: Clinton Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Jani Nikula 2014-08-12 17:11:41 +03:00 • committed by Daniel Vetter

parent ab656bb901

commit 73580fb764

1 changed files with 22 additions and 0 deletions

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drivers/gpu/drm/i915/intel_dp.c

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