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The SET sub-command of EC_CMD_CHARGE_STATE sets charger current / voltage parameters to arbitrary values and should be locked down. EC_CMD_CHARGE_CONTROL, on the other hand, switches between several safe operation modes, and should be allowed. BUG=None TEST=On kevin, set force_locked, plug zinger, and verify: ectool chargestate param 4 3 <-- ACCESS_DENIED ectool chargestate show <-- prints params ectool chargecontrol idle <-- stops charging battery ectool chargecontrol normal <-- battery charges again BRANCH=None Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Change-Id: I5503f07bb196d023a9bcd2e33f2e247f061f05e5 Reviewed-on: https://chromium-review.googlesource.com/757237 Commit-Ready: Shawn N <shawnn@chromium.org> Tested-by: Shawn N <shawnn@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly