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6971fd7a7f
This preserves more battery for the real-time clock. It also gets rid of one battery level/state, since the EC will now shut down at the same level (2%) as the AP. Having the EC hibernate at the same level as the AP shuts down also prevents the following weird scenario: - EC powers on at 2% battery. - EC won't power on the AP to do software sync because battery is low. - But the charge state machine won't actually hibernate the EC until 1%. - Between 2% and 1%, AC is inserted and system starts charging. - But EC-RO is what's doing the charging; we should go through software sync before charging. BUG=chrome-os-partner:17124 BRANCH=link TEST=manual On battery power, 1) With system on, battfake 2 -> system shuts down and EC hibernates 2) With system off, battfake 2 -> EC hibernates Change-Id: I87d17f70d60673f3e3f1c6eb88f3f00a8c9ed4e7 Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/44314
34 lines
1021 B
C
34 lines
1021 B
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Battery charging parameters and constraints
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*/
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#ifndef __CROS_EC_BATTERY_H
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#define __CROS_EC_BATTERY_H
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/* Stop charge when charging and battery level >= this percentage */
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#define BATTERY_LEVEL_FULL 100
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/* Tell host we're charged when battery level >= this percentage */
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#define BATTERY_LEVEL_NEAR_FULL 97
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/* Precharge only when charging and battery level < this level */
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#define BATTERY_LEVEL_PRE_CHARGE 25
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/*
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* Send battery-low host event when discharging and battery level <= this level
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*/
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#define BATTERY_LEVEL_LOW 10
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/*
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* Send battery-critical host event when discharging and battery level <= this
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* level.
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*/
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#define BATTERY_LEVEL_CRITICAL 5
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/*
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* Shut down main processor and/or hibernate EC when discharging and battery
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* level < this level.
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*/
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#define BATTERY_LEVEL_SHUTDOWN 3
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#endif /* __CROS_EC_BATTERY_H */
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