(cherry-pick back to ToT)
Clear the CHARGE_INHIBIT bit when requesting non-zero current/voltage
and set it when charging should be disabled. On Blaze with the
BQ24725 charger, setting this bit saves 10-15mW when we're not on AC.
This also fixes an issue where battery charging would not get enabled
when the charger is connected while the machine is in S3/S5. This is
because the kernel driver would inhibit charging when the charger was
removed and then the EC would not enable it when the charger was
re-connected while the host was off, such as in S3/S5.
BRANCH=nyan
BUG=chrome-os-partner:29386
TEST=Boot Blaze, disconnect charger, suspend, connect charger and
observe that the battery now starts charging.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/203163
Reviewed-by: Randall Spangler <rspangler@chromium.org>
(cherry picked from commit bd4469ae4ffbbd6f2cd5549bdb8809838e55d6f7)
Change-Id: Ibcb635b01a2292f214f71ab400ec34cd12e7536f
Original-Change-Id: I2efaf02296dc08c0de85950a70ad2592f4428241
Reviewed-on: https://chromium-review.googlesource.com/206909
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Yung-chieh Lo <yjlou@chromium.org>
Tested-by: Yung-chieh Lo <yjlou@chromium.org>