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Diffstat (limited to 'board/samus/battery.c')
-rw-r--r-- | board/samus/battery.c | 301 |
1 files changed, 0 insertions, 301 deletions
diff --git a/board/samus/battery.c b/board/samus/battery.c deleted file mode 100644 index bc73cbc1c3..0000000000 --- a/board/samus/battery.c +++ /dev/null @@ -1,301 +0,0 @@ -/* Copyright 2012 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_smart.h" -#include "charge_state.h" -#include "console.h" -#include "ec_commands.h" -#include "extpower.h" -#include "i2c.h" -#include "util.h" - -static const struct battery_info info = { - /* - * Design voltage - * max = 8.4V - * normal = 7.4V - * min = 6.0V - */ - .voltage_max = 8700, - .voltage_normal = 7400, - .voltage_min = 6000, - - /* Pre-charge current: I <= 0.01C */ - .precharge_current = 64, /* mA */ - - /* - * Operational temperature range - * 0 <= T_charge <= 50 deg C - * -20 <= T_discharge <= 60 deg C - */ - .start_charging_min_c = 0, - .start_charging_max_c = 50, - .charging_min_c = 0, - .charging_max_c = 50, - .discharging_min_c = -20, - .discharging_max_c = 60, -}; - -const struct battery_info *battery_get_info(void) -{ - return &info; -} - -#ifdef CONFIG_CHARGER_PROFILE_OVERRIDE - -static int fast_charging_allowed = 1; - -/* - * This can override the smart battery's charging profile. To make a change, - * modify one or more of requested_voltage, requested_current, or state. - * Leave everything else unchanged. - * - * Return the next poll period in usec, or zero to use the default (which is - * state dependent). - */ -int charger_profile_override(struct charge_state_data *curr) -{ - /* temp in 0.1 deg C */ - int temp_c; - const struct charger_info *info; - - /* keep track of last temperature range for hysteresis */ - static enum { - TEMP_LOW, - TEMP_NORMAL, - TEMP_HIGH - } temp_range = TEMP_NORMAL, prev_temp_range = TEMP_NORMAL; - - /* charging voltage to use at high temp */ - static int high_temp_charging_voltage; - - /* custom profile phase at normal temp */ - static int normal_temp_phase; - - /* battery voltage and current and previous voltage and current */ - int batt_voltage, batt_current; - static int prev_batt_voltage, prev_batt_current; - - /* - * Determine temperature range: - * Low: Battery is <15C - * Normal: Battery is 15-45C - * High: Battery is >45C - * - * Add 0.2 degrees of hysteresis. - * If temp reading was bad use last range. - */ - if (!(curr->batt.flags & BATT_FLAG_BAD_TEMPERATURE)) { - temp_c = curr->batt.temperature - 2731; - if (temp_c < 149) - temp_range = TEMP_LOW; - else if (temp_c > 151 && temp_c < 449) - temp_range = TEMP_NORMAL; - else if (temp_c > 451) - temp_range = TEMP_HIGH; - } - - /* - * Treat voltage and current as a pair, if either is bad fall back to - * previous reading. - */ - if (curr->batt.flags & - (BATT_FLAG_BAD_VOLTAGE | BATT_FLAG_BAD_CURRENT)) { - batt_voltage = prev_batt_voltage; - batt_current = prev_batt_current; - } else { - batt_voltage = prev_batt_voltage = curr->batt.voltage; - batt_current = prev_batt_current = curr->batt.current; - } - - /* - * If we are not charging or we aren't using fast charging profiles, - * then do not override desired current and voltage and reset some - * fast charging profile static variables. - */ - if (curr->state != ST_CHARGE || !fast_charging_allowed) { - prev_temp_range = TEMP_NORMAL; - normal_temp_phase = 0; - return 0; - } - - /* - * Okay, impose our custom will: - * Normal temp: - * Phase 0: CC at 9515mA @ 8.3V - * CV at 8.3V until current drops to 4759mA - * Phase 1: CC at 4759mA @ 8.7V - * CV at 8.7V - * - * Low temp: - * CC at 2854mA @ 8.7V - * CV at 8.7V - * - * High temp: - * If battery voltage < 8.3V then: - * CC at 6660mA @ 8.3V - * CV at 8.3V (when battery is hot we don't go to fully charged) - * else: - * CV at just above battery voltage which will essentially - * terminate the charge and allow battery to cool. - * Note that if we ever request a voltage below the present battery - * voltage, then we will stop the BQ switching, which will power off - * the INA and we won't be able to charge again until AC is - * disconnected. see crbug.com/p/35491. - */ - switch (temp_range) { - case TEMP_LOW: - curr->requested_current = 2854; - curr->requested_voltage = 8700; - break; - case TEMP_NORMAL: - if (normal_temp_phase == 0) { - curr->requested_current = 9515; - curr->requested_voltage = 8300; - if (batt_current <= 4759 && batt_voltage >= 8200) - normal_temp_phase = 1; - } - if (normal_temp_phase == 1) { - curr->requested_current = 4759; - curr->requested_voltage = 8700; - } - break; - case TEMP_HIGH: - /* - * First time TEMP_HIGH is used, get the closest voltage - * just above the battery voltage. If it is above 8.3V, we - * will use that as the target, otherwise we will use 8.3V. - */ - if (prev_temp_range != TEMP_HIGH) { - info = charger_get_info(); - high_temp_charging_voltage = MAX(8300, - charger_closest_voltage(batt_voltage + - info->voltage_step)); - } - curr->requested_current = 6660; - curr->requested_voltage = high_temp_charging_voltage; - break; - } - prev_temp_range = temp_range; - - 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) -{ - if (param == PARAM_FASTCHARGE) { - *value = fast_charging_allowed; - return EC_RES_SUCCESS; - } - return EC_RES_INVALID_PARAM; -} - -enum ec_status charger_profile_override_set_param(uint32_t param, - uint32_t value) -{ - if (param == PARAM_FASTCHARGE) { - fast_charging_allowed = value; - return EC_RES_SUCCESS; - } - return EC_RES_INVALID_PARAM; -} - -#ifdef CONFIG_CMD_FASTCHARGE -static int command_fastcharge(int argc, char **argv) -{ - if (argc > 1 && !parse_bool(argv[1], &fast_charging_allowed)) - return EC_ERROR_PARAM1; - - ccprintf("fastcharge %s\n", fast_charging_allowed ? "on" : "off"); - - return EC_SUCCESS; -} -DECLARE_CONSOLE_COMMAND(fastcharge, command_fastcharge, - "[on|off]", - "Get or set fast charging profile"); -#endif /* CONFIG_CMD_FASTCHARGE */ - -#endif /* CONFIG_CHARGER_PROFILE_OVERRIDE */ - -#ifdef CONFIG_BATTERY_REVIVE_DISCONNECT -/* - * Check if battery is in disconnect state, a state entered by pulling - * BATT_DISCONN_N low, and clear that state if we have external power plugged - * and no battery faults are detected. Disconnect state resembles battery - * shutdown mode, but extra steps must be taken to get the battery out of this - * mode. - */ -enum battery_disconnect_state battery_get_disconnect_state(void) -{ - uint8_t data[6]; - int rv; - /* - * Take note if we find that the battery isn't in disconnect state, - * and always return NOT_DISCONNECTED without probing the battery. - * This assumes the battery will not go to disconnect state during - * runtime. - */ - static int not_disconnected; - - if (not_disconnected) - return BATTERY_NOT_DISCONNECTED; - - if (extpower_is_present()) { - /* Check if battery charging + discharging is disabled. */ - rv = sb_read_mfgacc(PARAM_OPERATION_STATUS, - SB_ALT_MANUFACTURER_ACCESS, data, sizeof(data)); - if (rv) - return BATTERY_DISCONNECT_ERROR; - if (~data[3] & (BATTERY_DISCHARGING_DISABLED | - BATTERY_CHARGING_DISABLED)) { - not_disconnected = 1; - return BATTERY_NOT_DISCONNECTED; - } - - /* - * Battery is neither charging nor discharging. Verify that - * we didn't enter this state due to a safety fault. - */ - rv = sb_read_mfgacc(PARAM_SAFETY_STATUS, - SB_ALT_MANUFACTURER_ACCESS, data, sizeof(data)); - if (rv || data[2] || data[3] || data[4] || data[5]) - return BATTERY_DISCONNECT_ERROR; - else - /* No safety fault -- clear disconnect state. */ - return BATTERY_DISCONNECTED; - } - not_disconnected = 1; - return BATTERY_NOT_DISCONNECTED; -} -#endif /* CONFIG_BATTERY_REVIVE_DISCONNECT */ - -#define PARAM_CUT_OFF_LOW 0x10 -#define PARAM_CUT_OFF_HIGH 0x00 - -int board_cut_off_battery(void) -{ - int rv; - uint8_t buf[3]; - - buf[0] = SB_MANUFACTURER_ACCESS & 0xff; - buf[1] = PARAM_CUT_OFF_LOW; - buf[2] = PARAM_CUT_OFF_HIGH; - - i2c_lock(I2C_PORT_BATTERY, 1); - rv = i2c_xfer_unlocked(I2C_PORT_BATTERY, BATTERY_ADDR_FLAGS, - buf, 3, NULL, 0, I2C_XFER_SINGLE); - rv |= i2c_xfer_unlocked(I2C_PORT_BATTERY, BATTERY_ADDR_FLAGS, - buf, 3, NULL, 0, I2C_XFER_SINGLE); - i2c_lock(I2C_PORT_BATTERY, 0); - - return rv; -} - |