diff options
Diffstat (limited to 'board/poppy/battery.c')
| -rw-r--r-- | board/poppy/battery.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/board/poppy/battery.c b/board/poppy/battery.c deleted file mode 100644 index 3f6c4e273d..0000000000 --- a/board/poppy/battery.c +++ /dev/null @@ -1,226 +0,0 @@ -/* 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. - * - * 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" - -#define CPRINTS(format, args...) cprints(CC_CHARGER, format, ## args) - -static enum battery_present batt_pres_prev = BP_NOT_SURE; - -/* Shutdown mode parameter to write to manufacturer access register */ -#define SB_SHIP_MODE_REG SB_MANUFACTURER_ACCESS -#define SB_SHUTDOWN_DATA 0x0010 -#define SB_REVIVE_DATA 0x23a7 - -#if defined(BOARD_SORAKA) || defined(BOARD_LUX) -static const struct battery_info info = { - .voltage_max = 8800, - .voltage_normal = 7700, - .voltage_min = 6100, - /* Pre-charge values. */ - .precharge_current = 256, /* mA */ - - .start_charging_min_c = 0, - .start_charging_max_c = 45, - .charging_min_c = 0, - .charging_max_c = 45, - .discharging_min_c = -10, - .discharging_max_c = 60, -}; -#elif defined(BOARD_POPPY) - -static const struct battery_info info = { - .voltage_max = 13200, - .voltage_normal = 11550, - .voltage_min = 9100, - /* Pre-charge values. */ - .precharge_current = 256, /* mA */ - - .start_charging_min_c = 0, - .start_charging_max_c = 50, - .charging_min_c = 0, - .charging_max_c = 60, - .discharging_min_c = 0, - .discharging_max_c = 60, -}; -#else -#error "Battery information not available for board" -#endif - -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); -} - -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 will happen if a battery disconnect was - * intiaited via H1 setting the DISCONN signal to the battery. This will put the - * battery pack into a sleep state and when power is reconnected, 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; - uint8_t data[6]; - - /* 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)) == - (BATTERY_DISCHARGING_DISABLED | BATTERY_CHARGING_DISABLED)) - return BATTERY_DISCONNECTED; - - return BATTERY_NOT_DISCONNECTED; -} - -#ifdef BOARD_SORAKA -/* - * In case of soraka, battery enters an "emergency shutdown" mode when hardware - * button combo is used to cutoff battery. In order to get out of this mode, EC - * needs to send SB_REVIVE_DATA. - * - * Do not send revive data if: - * 1. It has already been sent during this boot or - * 2. Battery was/is in a state other than "BATTERY_DISCONNECTED". - * - * Try upto ten times to send the revive data command and if it fails every - * single time, give up and continue booting on AC power. - */ -static void battery_revive(void) -{ -#define MAX_REVIVE_TRIES 10 - static int battery_revive_done; - int tries = MAX_REVIVE_TRIES; - - if (battery_revive_done) - return; - - battery_revive_done = 1; - - while (tries--) { - if (battery_check_disconnect() != BATTERY_DISCONNECTED) - return; - - CPRINTS("Battery is disconnected! Try#%d to revive", - MAX_REVIVE_TRIES - tries); - - if (sb_write(SB_MANUFACTURER_ACCESS, SB_REVIVE_DATA) == - EC_SUCCESS) - return; - } - - if (battery_check_disconnect() == BATTERY_DISCONNECTED) - CPRINTS("Battery is still disconnected! Giving up!"); -} -#endif - -static enum battery_present battery_check_present_status(void) -{ - enum battery_present batt_pres; - int batt_disconnect_status; - - /* Get the physical hardware status */ - batt_pres = battery_hw_present(); - - /* - * If the battery is not physically connected, then no need to perform - * any more checks. - */ - if (batt_pres != BP_YES) - return batt_pres; - - /* - * If the battery is present now and was present last time we checked, - * return early. - */ - if (batt_pres == batt_pres_prev) - return batt_pres; - - /* - * Check battery disconnect status. If we are unable to read battery - * disconnect status, then return BP_NOT_SURE. Battery could be in ship - * mode and might require pre-charge current to wake it up. BP_NO is not - * returned here because charger state machine will not provide - * pre-charge current assuming that battery is not present. - */ - batt_disconnect_status = battery_check_disconnect(); - if (batt_disconnect_status == BATTERY_DISCONNECT_ERROR) - return BP_NOT_SURE; - -#ifdef BOARD_SORAKA - /* - * Since battery just changed status to present and we are able to read - * disconnect status, try reviving it if necessary. - */ - battery_revive(); -#endif - - /* - * Ensure that battery is: - * 1. Not in cutoff - * 2. Not disconnected - * 3. Initialized - */ - if (battery_is_cut_off() != BATTERY_CUTOFF_STATE_NORMAL || - batt_disconnect_status != BATTERY_NOT_DISCONNECTED || - battery_init() == 0) { - batt_pres = BP_NO; - } - - return batt_pres; -} - -enum battery_present battery_is_present(void) -{ - batt_pres_prev = battery_check_present_status(); - return batt_pres_prev; -} - |