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https://github.com/Telecominfraproject/OpenCellular.git
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58878e79e0
On the Nyan EC, we almost run out of the stack of console task. Instead of making that struct static or global, we print the cached data. Read the issue tracker for more detailed discussion. BUG=chrome-os-partner:28027 BRANCH=tot TEST=verified on nyan with/without battery. The "battery" console command doesn't crash the system. Change-Id: Id5246724760aed4cf1df827baf115007b2ffb48e Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/194875 Reviewed-by: Dave Parker <dparker@chromium.org> Reviewed-by: Bill Richardson <wfrichar@chromium.org>
128 lines
3.2 KiB
C
128 lines
3.2 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 after AP battery shutdown warning before we kill the AP */
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#define LOW_BATTERY_SHUTDOWN_TIMEOUT 30
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/* Seconds to spend trying to wake a non-responsive battery */
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#define PRECHARGE_TIMEOUT 30
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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 SECOND
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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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/* 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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/* 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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"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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* 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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* 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_temp_sensor_get_val(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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/* Pick the right implementation */
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#ifdef CONFIG_CHARGER_V1
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#ifdef CONFIG_CHARGER_V2
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#error "Choose either CONFIG_CHARGER_V1 or CONFIG_CHARGER_V2, not both"
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#else
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#include "charge_state_v1.h"
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#endif
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#else /* not V1 */
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#ifdef CONFIG_CHARGER_V2
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#include "charge_state_v2.h"
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#endif
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#endif /* CONFIG_CHARGER_V1 */
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#endif /* __CROS_EC_CHARGE_STATE_H */
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