drm/i915/bxt: add support for setting backlight freq from vbt

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The only missing piece is the function to convert frequency to PWM
register value. The PWM is based on 19.2 MHz clock, except for BXT A
step, which is based on CDCLK, and which we ignore.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Tested-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448958232-26520-1-git-send-email-jani.nikula@intel.com

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Jani Nikula 2015-12-01 10:23:50 +02:00

parent 1802419957

commit 2dd6982e47

1 changed files with 9 additions and 0 deletions

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drivers/gpu/drm/i915/intel_panel.c

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