drm/i915: use default 200 Hz backlight frequency
authorJani Nikula <jani.nikula@intel.com>
Tue, 1 Dec 2015 08:23:51 +0000 (10:23 +0200)
committerJani Nikula <jani.nikula@intel.com>
Wed, 2 Dec 2015 08:09:57 +0000 (10:09 +0200)
commit5075222b04a28bff6bf1c66a7baced787be6b6de
tree28cb0b70166a91a9f11b98dbf74a327f1db3b3f5
parent2dd6982e471f68137afd864fb4de64c59c7f5388
drm/i915: use default 200 Hz backlight frequency

If the backlight modulation frequency can't be extracted from the
registers or from VBT, use 200 Hz as the default. This may enable
backlight on some machines that previously failed.

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/1448958232-26520-2-git-send-email-jani.nikula@intel.com
drivers/gpu/drm/i915/intel_panel.c