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fcd0f0a5e4
We already shut down the main processor below 3%. Hibernating the EC below 2% will further cut power draw and minimize the risk of deep-discharging the battery. BUG=chrome-os-partner:14839 BRANCH=link TEST=manual 1) discharge battery below 3%; system should shut down. when powered on again it should shut back down within ~10 sec. 2) discharge battery below 2%; when system shuts down it should also hibernate. (I've also tested this with a hacked smart_battery.c which lies about the battery state of charge, since that's faster than waiting for my battery to discharge.) Change-Id: I504ba927012430db5cf10b895a36e6cd6fdf4c8b Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/34793 Reviewed-by: Bill Richardson <wfrichar@chromium.org>
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
/* Copyright (c) 2012 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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/* Design capacities, percentage */
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#define BATTERY_LEVEL_WARNING 15
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#define BATTERY_LEVEL_LOW 10
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#define BATTERY_LEVEL_CRITICAL 5
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/* Shut down main processor when battery level reaches this level */
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#define BATTERY_LEVEL_SHUTDOWN 3
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/* Hibernate EC immediately when battery level reaches this level */
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#define BATTERY_LEVEL_HIBERNATE_EC 2
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/* Stop charge when state of charge reaches this percentage */
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#define STOP_CHARGE_THRESHOLD 100
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/* Tell host we're charged at this percentage */
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#define NEAR_FULL_THRESHOLD 97
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/* Precharge only when state of charge is below this level */
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#define PRE_CHARGE_THRESHOLD 25
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/* Define the lightbar color thresholds, percentage */
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#define LIGHTBAR_POWER_THRESHOLD_FULL 99
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#define LIGHTBAR_POWER_THRESHOLD_HIGH 40
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#define LIGHTBAR_POWER_THRESHOLD_MEDIUM 25
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/* LOW is anything below MEDIUM */
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#endif /* __CROS_EC_BATTERY_H */
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