From: Jani Nikula <jani.nikula@intel.com>
Date: Tue, 12 Aug 2014 14:11:41 +0000 (+0300)
Subject: drm/i915/dp: make backlight bl_power control power sequencer backlight
X-Git-Tag: fixes-against-v3.18-rc2~73^2~32^2~107
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73580fb764c4213d305c0d36bd8f856ae631eb42;p=pandora-kernel.git

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

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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