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23b8885a02
Adding trickle charging mode to precharge batteries with voltage lower than minimal design value. This CL adds control to charger voltage to track battery input current change. To prevent battery from deeply discharging, this CL preserves 3% of the design capacity. Minor bug fixes include error state check and charger control logic. Signed-off-by: Rong Chang <rongchang@chromium.org> BUG=chrome-os-partner:8660,8661 TEST=manual Plug AC power, the power adapter led should be 'yellow'. On the EC serial console, type 'battery' and 'charger' commands. Battery input current should staid close to its desired current. A deeply discharged battery (5.5V) should be revived to a healthy state after 30 minutes ~ 4 hours. Change-Id: Ibaa2396c6b751639d98db32f5919b1e8ec700e40
- EC Lib
This wraps Blizzard driverlib and implements the EC chip interface defined
by Google. See below diagram for architecture.
+--------------------+
| Host BIOS/OS |
+--------------------+
---- host interface ----
+--------------------+
| Google EC features |
+--------------------+
---- chip interface ---- The interface is defined in
src/platform/ec/chip_interface/*.
+--------------------+ But the real implementation is in EC Lib.
| EC Lib |
+--------------------+
| Blizzard low level |
| driver, the |
| driverlib. |
+--------------------+