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55b87f4847
CHARGE_MAX_SLEEP_USEC was originally set to 1 minute (i.e. equal to POLL_PERIOD_VERY_LONG) in CL:191767. However, during re-factoring in CL:193876 it got changed to 1 second as charge_state_v1 used this value. Looking at the way CHARGE_MAX_SLEEP_USEC is used, value of 1 minute makes more sense because sleep_usec could be set to POLL_PERIOD_VERY_LONG when device is off or suspended. With the current logic in suspend/off state, sleep_usec is set to POLL_PERIOD_VERY_LONG and immediately gets reset to CHARGE_MAX_SLEEP_USEC in charger_task. This change fixes the above behavior by defining CHARGE_MAX_SLEEP_USEC as 1 minute. As a side-effect of this, we might not wake up early enough in case of critical battery. Thus, check if we need to shutdown on critical battery and adjust sleep time accordingly. BUG=b:69695376 BRANCH=None TEST=make -j buildall Change-Id: Ieba7279dc4b02c3d64022c3c5ac09fb869a3632d Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/788181 Reviewed-by: Shawn N <shawnn@chromium.org>
142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef __CROS_EC_CHARGE_STATE_H
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#define __CROS_EC_CHARGE_STATE_H
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#include "common.h"
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#include "timer.h"
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/* Stuff that's common to all charger implementations can go here. */
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/* Seconds to spend trying to wake a non-responsive battery */
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#define PRECHARGE_TIMEOUT CONFIG_BATTERY_PRECHARGE_TIMEOUT
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/* Power state task polling periods in usec */
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#define CHARGE_POLL_PERIOD_VERY_LONG MINUTE
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#define CHARGE_POLL_PERIOD_LONG (MSEC * 500)
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#define CHARGE_POLL_PERIOD_CHARGE (MSEC * 250)
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#define CHARGE_POLL_PERIOD_SHORT (MSEC * 100)
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#define CHARGE_MIN_SLEEP_USEC (MSEC * 50)
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#define CHARGE_MAX_SLEEP_USEC MINUTE
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/* Power states */
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enum charge_state {
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/* Meta-state; unchanged from previous time through task loop */
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PWR_STATE_UNCHANGE = 0,
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/* Initializing charge state machine at boot */
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PWR_STATE_INIT,
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/* Re-initializing charge state machine */
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PWR_STATE_REINIT,
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/* Just transitioned from init to idle */
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PWR_STATE_IDLE0,
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/* Idle; AC present */
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PWR_STATE_IDLE,
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/* Discharging */
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PWR_STATE_DISCHARGE,
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/* Discharging and fully charged */
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PWR_STATE_DISCHARGE_FULL,
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/* Charging */
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PWR_STATE_CHARGE,
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/* Charging, almost fully charged */
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PWR_STATE_CHARGE_NEAR_FULL,
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/* Charging state machine error */
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PWR_STATE_ERROR
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};
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/* Charge state flags */
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/* Forcing idle state */
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#define CHARGE_FLAG_FORCE_IDLE (1 << 0)
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/* External (AC) power is present */
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#define CHARGE_FLAG_EXTERNAL_POWER (1 << 1)
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/* Battery is responsive */
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#define CHARGE_FLAG_BATT_RESPONSIVE (1 << 2)
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/* Debugging constants, in the same order as enum charge_state. This string
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* table was moved here to sync with enum above.
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*/
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#define CHARGE_STATE_NAME_TABLE { \
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"unchange", \
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"init", \
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"reinit", \
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"idle0", \
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"idle", \
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"discharge", \
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"discharge_full", \
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"charge", \
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"charge_near_full", \
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"error" \
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}
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/* End of CHARGE_STATE_NAME_TABLE macro */
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/**
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* Return current charge state.
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*/
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enum charge_state charge_get_state(void);
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/**
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* Return non-zero if battery is so low we want to keep AP off.
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*/
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int charge_keep_power_off(void);
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/**
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* Return current charge state flags (CHARGE_FLAG_*)
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*/
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uint32_t charge_get_flags(void);
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/**
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* Return current battery charge percentage.
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*/
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int charge_get_percent(void);
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/**
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* Check if board is consuming full input current
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*
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* This returns true if the battery charge percentage is between 2% and 95%
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* exclusive.
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*
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* @return Board is consuming full input current
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*/
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int charge_is_consuming_full_input_current(void);
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/**
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* Return non-zero if discharging and battery so low we should shut down.
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*/
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int charge_want_shutdown(void);
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/**
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* Return non-zero if the battery level is too low to allow power on, even if
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* a charger is attached.
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*
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* @param power_button_pressed True if the power-up attempt is caused by a
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* power button press.
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*/
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int charge_prevent_power_on(int power_button_pressed);
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/**
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* Get the last polled battery/charger temperature.
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*
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* @param idx Sensor index to read.
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* @param temp_ptr Destination for temperature in K.
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*
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* @return EC_SUCCESS if successful, non-zero if error.
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*/
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int charge_get_battery_temp(int idx, int *temp_ptr);
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/**
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* Get the pointer to the battery parameters we saved in charge state.
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*
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* Use this carefully. Other threads can modify data while you are reading.
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*/
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const struct batt_params *charger_current_battery_params(void);
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/* Config Charger */
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#ifdef CONFIG_CHARGER_V2
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#include "charge_state_v2.h"
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#endif /* CONFIG_CHARGER_V2 */
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#endif /* __CROS_EC_CHARGE_STATE_H */
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