diff options
Diffstat (limited to 'board/nautilus/battery.c')
| -rw-r--r-- | board/nautilus/battery.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/board/nautilus/battery.c b/board/nautilus/battery.c deleted file mode 100644 index 642497cdfe..0000000000 --- a/board/nautilus/battery.c +++ /dev/null @@ -1,224 +0,0 @@ -/* Copyright 2017 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. - * - * Placeholder values for temporary battery pack. - */ - -#include "battery.h" -#include "battery_smart.h" -#include "charge_state.h" -#include "console.h" -#include "ec_commands.h" -#include "extpower.h" -#include "gpio.h" -#include "util.h" - -static enum battery_present batt_pres_prev = BP_NOT_SURE; - -/* Shutdown mode parameters to write to manufacturer access register */ -#define SB_SHIP_MODE_REG SB_MANUFACTURER_ACCESS -#define SB_SHUTDOWN_DATA 0x0010 - -/* - * Unlike other smart batteries, Nautilus battery uses different bit fields - * in manufacturer access register for the conditions of the CHG/DSG FETs. - */ -#define BATFETS_SHIFT (14) -#define BATFETS_MASK (0x3) -#define BATFETS_DISABLED (0x2) - -#define CHARGING_VOLTAGE_MV_SAFE 8400 -#define CHARGING_CURRENT_MA_SAFE 1500 - -static const struct battery_info info = { - .voltage_max = 8700, - .voltage_normal = 7700, - .voltage_min = 6000, - /* Pre-charge values. */ - .precharge_current = 200, /* mA */ - - .start_charging_min_c = 0, - .start_charging_max_c = 45, - .charging_min_c = 0, - .charging_max_c = 50, - .discharging_min_c = -20, - .discharging_max_c = 70, -}; - -const struct battery_info *battery_get_info(void) -{ - return &info; -} - -int board_cut_off_battery(void) -{ - int rv; - - /* Ship mode command must be sent twice to take effect */ - rv = sb_write(SB_SHIP_MODE_REG, SB_SHUTDOWN_DATA); - - if (rv != EC_SUCCESS) - return rv; - - return sb_write(SB_SHIP_MODE_REG, SB_SHUTDOWN_DATA); -} - -int charger_profile_override(struct charge_state_data *curr) -{ - int current; - int voltage; - /* battery temp in 0.1 deg C */ - int bat_temp_c; - - /* - * Keep track of battery temperature range: - * - * ZONE_0 ZONE_1 ZONE_2 ZONE_3 - * ---+------+--------+--------+------+--- Temperature (C) - * 0 5 12 45 50 - */ - enum { - TEMP_ZONE_0, /* 0 <= bat_temp_c <= 5 */ - TEMP_ZONE_1, /* 5 < bat_temp_c <= 12 */ - TEMP_ZONE_2, /* 12 < bat_temp_c <= 45 */ - TEMP_ZONE_3, /* 45 < bat_temp_c <= 50 */ - TEMP_ZONE_COUNT, - TEMP_OUT_OF_RANGE = TEMP_ZONE_COUNT - } temp_zone; - - current = curr->requested_current; - voltage = curr->requested_voltage; - bat_temp_c = curr->batt.temperature - 2731; - - /* - * If the temperature reading is bad, assume the temperature - * is out of allowable range. - */ - if ((curr->batt.flags & BATT_FLAG_BAD_TEMPERATURE) || - (bat_temp_c < 0) || (bat_temp_c > 500)) - temp_zone = TEMP_OUT_OF_RANGE; - else if (bat_temp_c <= 50) - temp_zone = TEMP_ZONE_0; - else if (bat_temp_c <= 120) - temp_zone = TEMP_ZONE_1; - else if (bat_temp_c <= 450) - temp_zone = TEMP_ZONE_2; - else - temp_zone = TEMP_ZONE_3; - - switch (temp_zone) { - case TEMP_ZONE_0: - voltage = CHARGING_VOLTAGE_MV_SAFE; - current = CHARGING_CURRENT_MA_SAFE; - break; - case TEMP_ZONE_1: - current = CHARGING_CURRENT_MA_SAFE; - break; - case TEMP_ZONE_2: - break; - case TEMP_ZONE_3: - voltage = CHARGING_VOLTAGE_MV_SAFE; - break; - case TEMP_OUT_OF_RANGE: - /* Don't charge if outside of allowable temperature range */ - current = 0; - voltage = 0; - curr->batt.flags &= ~BATT_FLAG_WANT_CHARGE; - curr->state = ST_IDLE; - break; - } - - curr->requested_voltage = MIN(curr->requested_voltage, voltage); - curr->requested_current = MIN(curr->requested_current, current); - - return 0; -} - -/* Customs options controllable by host command. */ -#define PARAM_FASTCHARGE (CS_PARAM_CUSTOM_PROFILE_MIN + 0) - -enum ec_status charger_profile_override_get_param(uint32_t param, - uint32_t *value) -{ - return EC_RES_INVALID_PARAM; -} - -enum ec_status charger_profile_override_set_param(uint32_t param, - uint32_t value) -{ - return EC_RES_INVALID_PARAM; -} - -enum battery_present battery_hw_present(void) -{ - /* The GPIO is low when the battery is physically present */ - return gpio_get_level(GPIO_BATTERY_PRESENT_L) ? BP_NO : BP_YES; -} - -static int battery_init(void) -{ - int batt_status; - - return battery_status(&batt_status) ? 0 : - !!(batt_status & STATUS_INITIALIZED); -} - -/* - * Check for case where both XCHG and XDSG bits are set indicating that even - * though the FG can be read from the battery, the battery is not able to be - * charged or discharged. This situation might happen when power is reconnected - * to a battery pack in sleep mode. In this transient siuation, the FG can be - * read, but the battery is still not able to provide power to the system. The - * calling function returns batt_pres = BP_NO, which instructs the charging - * state machine to prevent powering up the AP on battery alone which could lead - * to a brownout event when the battery isn't able yet to provide power to the - * system. - */ -static int battery_check_disconnect(void) -{ - int rv; - int batt_mfgacc; - - /* Check if battery charging + discharging is disabled. */ - rv = sb_read(SB_MANUFACTURER_ACCESS, &batt_mfgacc); - if (rv) - return BATTERY_DISCONNECT_ERROR; - - if (((batt_mfgacc >> BATFETS_SHIFT) & BATFETS_MASK) == - BATFETS_DISABLED) - return BATTERY_DISCONNECTED; - - return BATTERY_NOT_DISCONNECTED; -} - -enum battery_present battery_is_present(void) -{ - enum battery_present batt_pres; - - /* Get the physical hardware status */ - batt_pres = battery_hw_present(); - - /* - * Make sure battery status is implemented, I2C transactions are - * successful & the battery status is initialized to find out if it - * is a working battery and it is not in the cut-off mode. - * - * If battery I2C fails but VBATT is high, battery is booting from - * cut-off mode. - * - * FETs are turned off after Power Shutdown time. - * The device will wake up when a voltage is applied to PACK. - * Battery status will be inactive until it is initialized. - */ - if (batt_pres == BP_YES && batt_pres_prev != batt_pres && - (battery_is_cut_off() != BATTERY_CUTOFF_STATE_NORMAL || - battery_check_disconnect() != BATTERY_NOT_DISCONNECTED || - battery_init() == 0)) { - batt_pres = BP_NO; - } - - batt_pres_prev = batt_pres; - return batt_pres; -} - |