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965e6bd9f9
The battery cut-off is achieved by putting BQ27742 in SHUTDOWN mode. BRANCH=None BUG=None TEST=Unplug AC and do 'cutoff' in EC console. The EC console goes unresponsive. Change-Id: I4a1aa359d79333d47aaf53b685a52960e5dfd652 Signed-off-by: Vic Yang <victoryang@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/225007 Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
39 lines
966 B
C
39 lines
966 B
C
/* Copyright 2014 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 pack vendor provided charging profile
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*/
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#include "battery.h"
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#include "common.h"
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#include "i2c.h"
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/* Battery temperature ranges in degrees C */
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static const struct battery_info info = {
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/* Design voltage */
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.voltage_max = 4350,
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.voltage_normal = 3800,
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.voltage_min = 2800,
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/* Pre-charge current: I <= 0.01C */
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.precharge_current = 64, /* mA */
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/* Operational temperature range */
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.start_charging_min_c = 0,
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.start_charging_max_c = 45,
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.charging_min_c = 0,
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.charging_max_c = 50,
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.discharging_min_c = -20,
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.discharging_max_c = 60,
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};
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const struct battery_info *battery_get_info(void)
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{
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return &info;
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}
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int board_cut_off_battery(void)
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{
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/* Write SET_SHUTDOWN(0x13) to CTRL(0x00) */
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return i2c_write16(I2C_PORT_BATTERY, 0xaa, 0x0, 0x13);
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}
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