This commit just adds the GPIO for controlling the display backlight for
meowth and zoombini. The backlight should be enabled from the EC side
on transitions to S0 and turned off when suspending. Additionally, if
the lid is opened or closed the display backlight will be enabled or
disabled respectively.
BUG=b:69972660
BRANCH=None
TEST=`make -j buildall`
TEST=Flash meowth; Boot to S0, verify that the ENABLE_BACKLIGHT GPIO is
set high; Shut down; Verify that ENABLE_BACKLIGHT is 0.
TEST=Repeat above test on zoombini. Also, boot to S0, use a magnet to
simulate the lid closing, verify that ENABLE_BACKLIGHT is 0 when lid is
"closed". Verify it is 1 when lid is "open".
Change-Id: Iffc5db89a0378d354b1fe9e9e5347d57e7caf69b
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/811752
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
bedf1f5a61