diff options
Diffstat (limited to 'board/kevin/battery.c')
-rw-r--r-- | board/kevin/battery.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/board/kevin/battery.c b/board/kevin/battery.c new file mode 100644 index 0000000000..8fc9f02c90 --- /dev/null +++ b/board/kevin/battery.c @@ -0,0 +1,82 @@ +/* Copyright 2016 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 "util.h" + +/* Shutdown mode parameter to write to manufacturer access register */ +#define SB_SHUTDOWN_DATA 0x0010 + +/* Battery info for proto - copied from celes */ +/* TODO: Update once real battery is available */ +static const struct battery_info info = { + .voltage_max = 8700, + .voltage_normal = 7600, + .voltage_min = 6000, + .precharge_current = 150, + .start_charging_min_c = 0, + .start_charging_max_c = 45, + .charging_min_c = 0, + .charging_max_c = 60, + .discharging_min_c = -20, + .discharging_max_c = 60, +}; + +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_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA); + if (rv != EC_SUCCESS) + return EC_RES_ERROR; + + rv = sb_write(SB_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA); + return rv ? EC_RES_ERROR : EC_RES_SUCCESS; +} + +int charger_profile_override(struct charge_state_data *curr) +{ + const struct battery_info *batt_info; + /* battery temp in 0.1 deg C */ + int bat_temp_c = curr->batt.temperature - 2731; + + batt_info = battery_get_info(); + /* Don't charge if outside of allowable temperature range */ + if (bat_temp_c >= batt_info->charging_max_c * 10 || + bat_temp_c < batt_info->charging_min_c * 10) { + curr->requested_current = 0; + curr->requested_voltage = 0; + curr->batt.flags &= ~BATT_FLAG_WANT_CHARGE; + curr->state = ST_IDLE; + } + 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; +} |