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Diffstat (limited to 'board/taniks/battery.c')
-rw-r--r-- | board/taniks/battery.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/board/taniks/battery.c b/board/taniks/battery.c new file mode 100644 index 0000000000..61de7bcf80 --- /dev/null +++ b/board/taniks/battery.c @@ -0,0 +1,103 @@ +/* Copyright 2021 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * Battery pack vendor provided charging profile + */ + +#include "battery.h" +#include "battery_fuel_gauge.h" +#include "battery_smart.h" +#include "common.h" +#include "util.h" +/* + * Battery info for all Taniks battery types. Note that the fields + * start_charging_min/max and charging_min/max are not used for the charger. + * The effective temperature limits are given by discharging_min/max_c. + * + * Fuel Gauge (FG) parameters which are used for determining if the battery + * is connected, the appropriate ship mode (battery cutoff) command, and the + * charge/discharge FETs status. + * + * Ship mode (battery cutoff) requires 2 writes to the appropriate smart battery + * register. For some batteries, the charge/discharge FET bits are set when + * charging/discharging is active, in other types, these bits set mean that + * charging/discharging is disabled. Therefore, in addition to the mask for + * these bits, a disconnect value must be specified. Note that for TI fuel + * gauge, the charge/discharge FET status is found in Operation Status (0x54), + * but a read of Manufacturer Access (0x00) will return the lower 16 bits of + * Operation status which contains the FET status bits. + * + * The assumption for battery types supported is that the charge/discharge FET + * status can be read with a sb_read() command and therefore, only the register + * address, mask, and disconnect value need to be provided. + */ +const struct board_batt_params board_battery_info[] = { + [BATTERY_SMP] = { + .fuel_gauge = { + .manuf_name = "SMP", + .device_name = "L21M4PG4", + .ship_mode = { + .reg_addr = 0x34, + .reg_data = { 0x0000, 0x1000 }, + }, + .fet = { + .reg_addr = 0x34, + .reg_mask = 0x0100, + .disconnect_val = 0x0100, + } + }, + .batt_info = { + .voltage_max = 8900, /* mV */ + .voltage_normal = 7720, /* mV */ + .voltage_min = 6000, /* mV */ + .precharge_current = 330, /* mA */ + .start_charging_min_c = 0, + .start_charging_max_c = 50, + .charging_min_c = 0, + .charging_max_c = 60, + .discharging_min_c = -20, + .discharging_max_c = 60, + }, + }, + [BATTERY_SUNWODA] = { + .fuel_gauge = { + .manuf_name = "Sunwoda", + .device_name = "L21D4PG4", + .ship_mode = { + .reg_addr = 0x34, + .reg_data = { 0x0000, 0x1000 }, + }, + .fet = { + .reg_addr = 0x34, + .reg_mask = 0x0100, + .disconnect_val = 0x0100, + } + }, + .batt_info = { + .voltage_max = 8900, /* mV */ + .voltage_normal = 7720, /* mV */ + .voltage_min = 6000, /* mV */ + .precharge_current = 330, /* mA */ + .start_charging_min_c = 0, + .start_charging_max_c = 50, + .charging_min_c = 0, + .charging_max_c = 60, + .discharging_min_c = -20, + .discharging_max_c = 60, + }, + }, +}; +BUILD_ASSERT(ARRAY_SIZE(board_battery_info) == BATTERY_TYPE_COUNT); + +const enum battery_type DEFAULT_BATTERY_TYPE = BATTERY_SMP; + +__override bool board_battery_is_initialized(void) +{ + bool batt_initialization_state; + int batt_status; + + batt_initialization_state = (battery_status(&batt_status) ? false : + !!(batt_status & STATUS_INITIALIZED)); + return batt_initialization_state; +} |