94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/* Copyright 2019 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_fuel_gauge.h"
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#include "common.h"
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#include "util.h"
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/*
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* Battery info for all Hatch battery types. Note that the fields
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* start_charging_min/max and charging_min/max are not used for the charger.
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* The effective temperature limits are given by discharging_min/max_c.
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*
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* Fuel Gauge (FG) parameters which are used for determining if the battery
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* is connected, the appropriate ship mode (battery cutoff) command, and the
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* charge/discharge FETs status.
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*
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* Ship mode (battery cutoff) requires 2 writes to the appropriate smart battery
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* register. For some batteries, the charge/discharge FET bits are set when
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* charging/discharging is active, in other types, these bits set mean that
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* charging/discharging is disabled. Therefore, in addition to the mask for
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* these bits, a disconnect value must be specified. Note that for TI fuel
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* gauge, the charge/discharge FET status is found in Operation Status (0x54),
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* but a read of Manufacturer Access (0x00) will return the lower 16 bits of
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* Operation status which contains the FET status bits.
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*
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* The assumption for battery types supported is that the charge/discharge FET
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* status can be read with a sb_read() command and therefore, only the register
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* address, mask, and disconnect value need to be provided.
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*/
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const struct board_batt_params board_battery_info[] = {
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/* SMP LIS Dell FMXMT Battery Information */
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[BATTERY_SMP_LIS] = {
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.fuel_gauge = {
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.manuf_name = "SMP-LIS3.78",
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.ship_mode = {
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.reg_addr = 0x0,
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.reg_data = { 0x10, 0x10 },
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},
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.fet = {
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.reg_addr = 0x0,
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.reg_mask = 0x2000,
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.disconnect_val = 0x2000,
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}
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},
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.batt_info = {
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.voltage_max = 8800,
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.voltage_normal = 7660, /* mV */
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.voltage_min = 6000, /* mV */
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.precharge_current = 256, /* mA */
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.start_charging_min_c = 0,
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.start_charging_max_c = 60,
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.charging_min_c = 0,
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.charging_max_c = 60,
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.discharging_min_c = 0,
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.discharging_max_c = 60,
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},
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},
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/* SMP SDI Dell FMXMT Battery Information */
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[BATTERY_SMP_SDI] = {
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.fuel_gauge = {
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.manuf_name = "SMP-SDI-3727",
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.ship_mode = {
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.reg_addr = 0x0,
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.reg_data = { 0x10, 0x10 },
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},
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.fet = {
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.reg_addr = 0x0,
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.reg_mask = 0x2000,
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.disconnect_val = 0x2000,
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}
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},
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.batt_info = {
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.voltage_max = 8800,
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.voltage_normal = 7660, /* mV */
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.voltage_min = 6000, /* mV */
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.precharge_current = 256, /* mA */
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.start_charging_min_c = 0,
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.start_charging_max_c = 60,
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.charging_min_c = 0,
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.charging_max_c = 60,
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.discharging_min_c = 0,
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.discharging_max_c = 60,
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},
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},
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};
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BUILD_ASSERT(ARRAY_SIZE(board_battery_info) == BATTERY_TYPE_COUNT);
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const enum battery_type DEFAULT_BATTERY_TYPE = BATTERY_SMP_SDI;
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