From 1861f5695a3663e5e1f7fa9470fe27fef3a58671 Mon Sep 17 00:00:00 2001 From: philipchen Date: Fri, 20 Jan 2017 13:54:37 -0800 Subject: scarlet: initial mainboard Copied board-related files from gru folder and updated some minor changes to make it compilable. Will do more follow-up modification based on this work. BUG=chrome-os-partner:62207, b:62307687 CQ-DEPEND=CL:524973, CL:524981, CL:524987 BRANCH=gru TEST=make BOARD=scarlet Change-Id: Ib508ef69e448028809276fe010c3f5fbef0500b4 Reviewed-on: https://chromium-review.googlesource.com/430965 Reviewed-by: Shawn N Commit-Queue: Philip Chen Tested-by: Philip Chen (cherry picked from commit 63592fef936909fe97af487f4ded44b9daa5847f) Reviewed-on: https://chromium-review.googlesource.com/524034 Commit-Ready: Philip Chen Reviewed-by: Philip Chen --- board/scarlet/battery.c | 146 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 board/scarlet/battery.c (limited to 'board/scarlet/battery.c') diff --git a/board/scarlet/battery.c b/board/scarlet/battery.c new file mode 100644 index 0000000000..0e99f7bf6d --- /dev/null +++ b/board/scarlet/battery.c @@ -0,0 +1,146 @@ +/* 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 "extpower.h" +#include "util.h" + +/* Shutdown mode parameter to write to manufacturer access register */ +#define SB_SHUTDOWN_DATA 0x0010 + +static const struct battery_info info = { + .voltage_max = 8688, /* 8700mA, round down for chg reg */ + .voltage_normal = 7600, + .voltage_min = 5800, + .precharge_current = 256, + .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; +} + +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; +} + +static int battery_not_disconnected; + +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. + */ + if (battery_not_disconnected) + return BATTERY_NOT_DISCONNECTED; + + if (extpower_is_present()) { + /* Check if battery charging + discharging is disabled. */ + rv = sb_write(SB_MANUFACTURER_ACCESS, PARAM_OPERATION_STATUS); + if (rv) + return BATTERY_DISCONNECT_ERROR; + + rv = sb_read_string(I2C_PORT_BATTERY, BATTERY_ADDR, + SB_ALT_MANUFACTURER_ACCESS, data, 6); + + if (rv || (~data[3] & (BATTERY_DISCHARGING_DISABLED | + BATTERY_CHARGING_DISABLED))) { + battery_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_write(SB_MANUFACTURER_ACCESS, PARAM_SAFETY_STATUS); + if (rv) + return BATTERY_DISCONNECT_ERROR; + + rv = sb_read_string(I2C_PORT_BATTERY, BATTERY_ADDR, + SB_ALT_MANUFACTURER_ACCESS, data, 6); + + if (rv || data[2] || data[3] || data[4] || data[5]) + return BATTERY_DISCONNECT_ERROR; + + /* No safety fault, battery is disconnected */ + return BATTERY_DISCONNECTED; + } + battery_not_disconnected = 1; + return BATTERY_NOT_DISCONNECTED; +} + +int charger_profile_override(struct charge_state_data *curr) +{ + const struct battery_info *batt_info = battery_get_info(); + int now_discharging; + + /* battery temp in 0.1 deg C */ + int bat_temp_c = curr->batt.temperature - 2731; + + if (curr->state == ST_CHARGE) { + /* 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 = curr->requested_voltage = 0; + curr->batt.flags &= ~BATT_FLAG_WANT_CHARGE; + curr->state = ST_IDLE; + now_discharging = 0; + /* Don't start charging if battery is nearly full */ + } else if ((curr->batt.status & STATUS_FULLY_CHARGED) && + battery_not_disconnected) { + curr->requested_current = curr->requested_voltage = 0; + curr->batt.flags &= ~BATT_FLAG_WANT_CHARGE; + curr->state = ST_DISCHARGE; + now_discharging = 1; + } else + now_discharging = 0; + charger_discharge_on_ac(now_discharging); + } + + 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; +} -- cgit v1.2.1