diff options
Diffstat (limited to 'board/mchpevb1/battery.c')
| -rw-r--r-- | board/mchpevb1/battery.c | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/board/mchpevb1/battery.c b/board/mchpevb1/battery.c deleted file mode 100644 index fcc09994bf..0000000000 --- a/board/mchpevb1/battery.c +++ /dev/null @@ -1,230 +0,0 @@ -/* Copyright 2015 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_smart.h" -#include "charge_state.h" -#include "console.h" -#include "ec_commands.h" -#include "i2c.h" -#include "util.h" - -/* Shutdown mode parameter to write to manufacturer access register */ -#define PARAM_CUT_OFF_LOW 0x10 -#define PARAM_CUT_OFF_HIGH 0x00 - -/* Battery info for BQ40Z55 */ -static const struct battery_info info = { - .voltage_max = 8700, /* mV */ - .voltage_normal = 7600, - .voltage_min = 6000, - .precharge_current = 256, /* mA */ - .start_charging_min_c = 0, - .start_charging_max_c = 46, - .charging_min_c = 0, - .charging_max_c = 60, - .discharging_min_c = 0, - .discharging_max_c = 60, -}; - -const struct battery_info *battery_get_info(void) -{ - return &info; -} - -int board_cut_off_battery(void) -{ - int rv; - uint8_t buf[3]; - - /* Ship mode command must be sent twice to take effect */ - 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; -} - -#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 = curr->batt.temperature - 2731; - /* keep track of last temperature range for hysteresis */ - static enum { - TEMP_RANGE_1, - TEMP_RANGE_2, - TEMP_RANGE_3, - TEMP_RANGE_4, - TEMP_RANGE_5, - } temp_range = TEMP_RANGE_3; - /* keep track of last voltage range for hysteresis */ - static enum { - VOLTAGE_RANGE_LOW, - VOLTAGE_RANGE_HIGH, - } voltage_range = VOLTAGE_RANGE_LOW; - - /* Current and previous battery voltage */ - int batt_voltage; - static int prev_batt_voltage; - - /* - * Determine temperature range. The five ranges are: - * < 10C - * 10-15C - * 15-23C - * 23-45C - * > 45C - * - * Add 0.2 degrees of hysteresis. - * If temp reading was bad, use last range. - */ - if (!(curr->batt.flags & BATT_FLAG_BAD_TEMPERATURE)) { - if (temp_c < 99) - temp_range = TEMP_RANGE_1; - else if (temp_c > 101 && temp_c < 149) - temp_range = TEMP_RANGE_2; - else if (temp_c > 151 && temp_c < 229) - temp_range = TEMP_RANGE_3; - else if (temp_c > 231 && temp_c < 449) - temp_range = TEMP_RANGE_4; - else if (temp_c > 451) - temp_range = TEMP_RANGE_5; - } - - /* - * If battery voltage reading is bad, use the last reading. Otherwise, - * determine voltage range with hysteresis. - */ - if (curr->batt.flags & BATT_FLAG_BAD_VOLTAGE) { - batt_voltage = prev_batt_voltage; - } else { - batt_voltage = prev_batt_voltage = curr->batt.voltage; - if (batt_voltage < 8200) - voltage_range = VOLTAGE_RANGE_LOW; - else if (batt_voltage > 8300) - voltage_range = VOLTAGE_RANGE_HIGH; - } - - /* - * If we are not charging or we aren't using fast charging profiles, - * then do not override desired current and voltage. - */ - if (curr->state != ST_CHARGE || !fast_charging_allowed) - return 0; - - /* - * Okay, impose our custom will: - * When battery is 0-10C: - * CC at 486mA @ 8.7V - * CV at 8.7V - * - * When battery is <15C: - * CC at 1458mA @ 8.7V - * CV at 8.7V - * - * When battery is <23C: - * CC at 3402mA until 8.3V @ 8.7V - * CC at 2430mA @ 8.7V - * CV at 8.7V - * - * When battery is <45C: - * CC at 4860mA until 8.3V @ 8.7V - * CC at 2430mA @ 8.7V - * CV at 8.7V until current drops to 450mA - * - * When battery is >45C: - * CC at 2430mA @ 8.3V - * CV at 8.3V (when battery is hot we don't go to fully charged) - */ - switch (temp_range) { - case TEMP_RANGE_1: - curr->requested_current = 486; - curr->requested_voltage = 8700; - break; - case TEMP_RANGE_2: - curr->requested_current = 1458; - curr->requested_voltage = 8700; - break; - case TEMP_RANGE_3: - curr->requested_voltage = 8700; - if (voltage_range == VOLTAGE_RANGE_HIGH) - curr->requested_current = 2430; - else - curr->requested_current = 3402; - break; - case TEMP_RANGE_4: - curr->requested_voltage = 8700; - if (voltage_range == VOLTAGE_RANGE_HIGH) - curr->requested_current = 2430; - else - curr->requested_current = 4860; - break; - case TEMP_RANGE_5: - curr->requested_current = 2430; - curr->requested_voltage = 8300; - break; - } - - 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; -} - -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_CHARGER_PROFILE_OVERRIDE */ |