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3192264679
This gives the AP a way to see that temperature for DPTF. Alarm
thresholds were defined on a per-sensor basis, so they come along for
free.
BUG=chrome-os-partner:25585
BRANCH=rambi
TEST=temps command shows same temp for battery as battery command (other
than rounding error; battery command shows with 0.1C accuracy).
'ectool temps all' shows the battery temp as the last temperature.
Unplug battery and temps command shows error for the battery temp,
as does 'ectool temps all'.
Change-Id: I1bce72f164d9fb1be631e7241a4ea24ddf409d7a
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/185444
Reviewed-by: Dave Parker <dparker@chromium.org>
159 lines
4.4 KiB
C
159 lines
4.4 KiB
C
/* Copyright (c) 2013 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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#include "battery.h"
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#include "timer.h"
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#ifndef __CROS_EC_CHARGE_STATE_H
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#define __CROS_EC_CHARGE_STATE_H
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/* Update period to prevent charger watchdog timeout */
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#define CHARGER_UPDATE_PERIOD (SECOND * 10)
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/* Power state task polling periods in usec */
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#define POLL_PERIOD_VERY_LONG MINUTE
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#define POLL_PERIOD_LONG (MSEC * 500)
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#define POLL_PERIOD_CHARGE (MSEC * 250)
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#define POLL_PERIOD_SHORT (MSEC * 100)
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#define MIN_SLEEP_USEC (MSEC * 50)
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#define MAX_SLEEP_USEC SECOND
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/* Power state error flags */
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#define F_CHARGER_INIT (1 << 0) /* Charger initialization */
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#define F_CHARGER_VOLTAGE (1 << 1) /* Charger maximum output voltage */
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#define F_CHARGER_CURRENT (1 << 2) /* Charger maximum output current */
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#define F_BATTERY_VOLTAGE (1 << 3) /* Battery voltage */
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#define F_BATTERY_MODE (1 << 8) /* Battery mode */
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#define F_BATTERY_CAPACITY (1 << 9) /* Battery capacity */
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#define F_BATTERY_STATE_OF_CHARGE (1 << 10) /* State of charge, percentage */
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#define F_BATTERY_UNRESPONSIVE (1 << 11) /* Battery not responding */
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#define F_BATTERY_NOT_CONNECTED (1 << 12) /* Battery not connected */
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#define F_BATTERY_GET_PARAMS (1 << 13) /* Any battery parameter bad */
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#define F_BATTERY_MASK (F_BATTERY_VOLTAGE | \
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F_BATTERY_MODE | \
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F_BATTERY_CAPACITY | F_BATTERY_STATE_OF_CHARGE | \
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F_BATTERY_UNRESPONSIVE | F_BATTERY_NOT_CONNECTED | \
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F_BATTERY_GET_PARAMS)
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#define F_CHARGER_MASK (F_CHARGER_VOLTAGE | F_CHARGER_CURRENT | \
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F_CHARGER_INIT)
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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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/* Power state data
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* Status collection of charging state machine.
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*/
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struct charge_state_data {
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int ac;
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int charging_voltage;
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int charging_current;
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struct batt_params batt;
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enum charge_state state;
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uint32_t error;
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timestamp_t ts;
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};
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/* State context
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* The shared context for state handler. The context contains current and
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* previous state.
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*/
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struct charge_state_context {
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struct charge_state_data curr;
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struct charge_state_data prev;
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timestamp_t charge_state_updated_time;
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uint32_t *memmap_batt_volt;
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uint32_t *memmap_batt_rate;
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uint32_t *memmap_batt_cap;
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uint8_t *memmap_batt_flags;
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/* Charger and battery pack info */
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const struct charger_info *charger;
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const struct battery_info *battery;
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/* Charging timestamps */
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timestamp_t charger_update_time;
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timestamp_t trickle_charging_time;
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timestamp_t voltage_debounce_time;
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timestamp_t shutdown_warning_time;
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int battery_responsive;
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};
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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 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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#ifdef CONFIG_CHARGER
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int charge_want_shutdown(void);
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#else
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static inline int charge_want_shutdown(void) { return 0; }
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#endif
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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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#endif /* __CROS_EC_CHARGE_STATE_H */
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