/**
* Handle the hang detect timer expiring.
*/
static void hang_detect_deferred(void)
{
/* If we're no longer active, nothing to do */
if (!active)
return;
/* If we're rebooting the AP, stop hang detection */
if (timeout_will_reboot) {
CPRINTS("hang detect triggering warm reboot");
host_set_single_event(EC_HOST_EVENT_HANG_REBOOT);
chipset_reset(0);
active = 0;
return;
}
/* Otherwise, we're starting with the host event */
CPRINTS("hang detect sending host event");
host_set_single_event(EC_HOST_EVENT_HANG_DETECT);
/* If we're also rebooting, defer for the remaining delay */
if (hdparams.warm_reboot_timeout_msec) {
CPRINTS("hang detect continuing (for reboot)");
timeout_will_reboot = 1;
hook_call_deferred(hang_detect_deferred,
(hdparams.warm_reboot_timeout_msec -
hdparams.host_event_timeout_msec) * MSEC);
} else {
/* Not rebooting, so go back to idle */
active = 0;
}
}
/**
* Politely ask the CPU to enable/disable its own throttling.
*
* @param throttle Enable (!=0) or disable(0) throttling
*/
test_mockable void host_throttle_cpu(int throttle)
{
if (throttle)
host_set_single_event(EC_HOST_EVENT_THROTTLE_START);
else
host_set_single_event(EC_HOST_EVENT_THROTTLE_STOP);
}
/*
* Send host events as the battery charge drops below certain thresholds.
* We handle forced shutdown and other actions elsewhere; this is just for the
* host events. We send these even if the AP is off, since the AP will read and
* discard any events it doesn't care about the next time it wakes up.
*/
static void notify_host_of_low_battery(void)
{
/* We can't tell what the current charge is. Assume it's okay. */
if (curr.batt.flags & BATT_FLAG_BAD_STATE_OF_CHARGE)
return;
if (curr.batt.state_of_charge <= BATTERY_LEVEL_LOW &&
prev_charge > BATTERY_LEVEL_LOW)
host_set_single_event(EC_HOST_EVENT_BATTERY_LOW);
if (curr.batt.state_of_charge <= BATTERY_LEVEL_CRITICAL &&
prev_charge > BATTERY_LEVEL_CRITICAL)
host_set_single_event(EC_HOST_EVENT_BATTERY_CRITICAL);
}
/**
* Handle debounced power button changing state.
*/
static void power_button_change_deferred(void)
{
const int new_pressed = raw_power_button_pressed();
/* Re-enable keyboard scanning if power button is no longer pressed */
if (!new_pressed)
keyboard_scan_enable(1, KB_SCAN_DISABLE_POWER_BUTTON);
/* If power button hasn't changed state, nothing to do */
if (new_pressed == debounced_power_pressed) {
power_button_is_stable = 1;
return;
}
debounced_power_pressed = new_pressed;
power_button_is_stable = 1;
CPRINTS("power button %s", new_pressed ? "pressed" : "released");
/* Call hooks */
hook_notify(HOOK_POWER_BUTTON_CHANGE);
/* Notify host if power button has been pressed */
if (new_pressed)
host_set_single_event(EC_HOST_EVENT_POWER_BUTTON);
}
/**
* Init state handler
*
* - check ac, charger, battery and temperature
* - initialize charger
* - new states: DISCHARGE, IDLE
*/
static enum charge_state state_init(struct charge_state_context *ctx)
{
/* Stop charger, unconditionally */
charge_request(0, 0);
/* if battery was not detected initially, get battery info again */
if (ctx->battery == NULL)
ctx->battery = battery_get_info();
/* Update static battery info */
update_battery_info();
/* Clear shutdown timer */
ctx->shutdown_warning_time.val = 0;
/* If AC is not present, switch to discharging state */
if (!ctx->curr.ac)
return PWR_STATE_DISCHARGE;
/* Check general error conditions */
if (ctx->curr.error)
return PWR_STATE_ERROR;
/* Send battery event to host */
host_set_single_event(EC_HOST_EVENT_BATTERY);
return PWR_STATE_IDLE0;
}
/**
* Deferred function to handle external power change
*/
static void extpower_deferred(void)
{
int extpower_presence = gpio_get_level(GPIO_AC_PRESENT);
if (extpower_presence == debounced_extpower_presence)
return;
debounced_extpower_presence = extpower_presence;
hook_notify(HOOK_AC_CHANGE);
/* Forward notification to host */
if (extpower_presence)
host_set_single_event(EC_HOST_EVENT_AC_CONNECTED);
else
host_set_single_event(EC_HOST_EVENT_AC_DISCONNECTED);
}
/* Send host event up to AP */
void pd_send_host_event(int mask)
{
/* mask must be set */
if (!mask)
return;
atomic_or(&(host_event_status.status), mask);
/* interrupt the AP */
host_set_single_event(EC_HOST_EVENT_PD_MCU);
}
static void host_command_init(void)
{
/* Initialize memory map ID area */
host_get_memmap(EC_MEMMAP_ID)[0] = 'E';
host_get_memmap(EC_MEMMAP_ID)[1] = 'C';
*host_get_memmap(EC_MEMMAP_ID_VERSION) = 1;
*host_get_memmap(EC_MEMMAP_EVENTS_VERSION) = 1;
host_set_single_event(EC_HOST_EVENT_INTERFACE_READY);
CPRINTS("hostcmd init 0x%x", host_get_events());
}
/*
* Send host event to the AP if the battery is temperature or charge level
* is critical. Force-shutdown if the problem isn't corrected after timeout.
*/
static void shutdown_on_critical_battery(void)
{
int batt_temp_c;
int battery_critical = 0;
/*
* TODO(crosbug.com/p/27642): The thermal loop should watch the battery
* temp, so it can turn fans on.
*/
batt_temp_c = DECI_KELVIN_TO_CELSIUS(curr.batt.temperature);
if (battery_too_hot(batt_temp_c)) {
CPRINTS("Batt temp out of range: %dC", batt_temp_c);
battery_critical = 1;
}
if (battery_too_low() && !curr.batt_is_charging) {
CPRINTS("Low battery: %d%%, %dmV",
curr.batt.state_of_charge, curr.batt.voltage);
battery_critical = 1;
}
if (!battery_critical) {
/* Reset shutdown warning time */
shutdown_warning_time.val = 0;
return;
}
if (!shutdown_warning_time.val) {
CPRINTS("charge warn shutdown due to critical battery");
shutdown_warning_time = get_time();
if (!chipset_in_state(CHIPSET_STATE_ANY_OFF))
host_set_single_event(EC_HOST_EVENT_BATTERY_SHUTDOWN);
} else if (get_time().val > shutdown_warning_time.val +
CRITICAL_BATTERY_SHUTDOWN_TIMEOUT_US) {
if (chipset_in_state(CHIPSET_STATE_ANY_OFF)) {
#ifdef CONFIG_HIBERNATE
/* Timeout waiting for charger to provide more power */
CPRINTS(
"charge force EC hibernate due to critical battery");
system_hibernate(0, 0);
#elif defined(CONFIG_BATTERY_CRITICAL_SHUTDOWN_CUT_OFF)
CPRINTS(
"charge force battery cut-off due to critical level");
board_cut_off_battery();
#endif
} else {
/* Timeout waiting for AP to shut down, so kill it */
CPRINTS(
"charge force shutdown due to critical battery");
chipset_force_shutdown();
}
}
}
static void panic_init(void)
{
#ifdef CONFIG_HOSTCMD_EVENTS
struct panic_data *addr = panic_get_data();
/* Notify host of new panic event */
if (addr && !(addr->flags & PANIC_DATA_FLAG_OLD_HOSTEVENT)) {
host_set_single_event(EC_HOST_EVENT_PANIC);
addr->flags |= PANIC_DATA_FLAG_OLD_HOSTEVENT;
}
#endif
}
static void board_startup_key_combo(void)
{
int vold = !gpio_get_level(GPIO_BTN_VOLD_L);
int volu = !gpio_get_level(GPIO_BTN_VOLU_L);
int pwr = power_button_signal_asserted();
/*
* Determine recovery mode is requested by the power and
* voldown buttons being pressed (while device was off).
*/
if (pwr && vold && !volu) {
host_set_single_event(EC_HOST_EVENT_KEYBOARD_RECOVERY);
CPRINTS("> RECOVERY mode");
}
/*
* Determine fastboot mode is requested by the power and
* voldown buttons being pressed (while device was off).
*/
if (pwr && volu && !vold) {
host_set_single_event(EC_HOST_EVENT_KEYBOARD_FASTBOOT);
CPRINTS("> FASTBOOT mode");
}
}
/**
* Prevent battery from going into deep discharge state
*/
static void low_battery_shutdown(struct charge_state_context *ctx)
{
if (chipset_in_state(CHIPSET_STATE_ANY_OFF)) {
/* AP is off, so shut down the EC now */
CPRINTS("charge force EC hibernate due to low battery");
system_hibernate(0, 0);
} else if (!ctx->shutdown_warning_time.val) {
/* Warn AP battery level is so low we'll shut down */
CPRINTS("charge warn shutdown due to low battery");
ctx->shutdown_warning_time = get_time();
host_set_single_event(EC_HOST_EVENT_BATTERY_SHUTDOWN);
} else if (get_time().val > ctx->shutdown_warning_time.val +
LOW_BATTERY_SHUTDOWN_TIMEOUT_US) {
/* Timeout waiting for AP to shut down, so kill it */
CPRINTS("charge force shutdown due to low battery");
chipset_force_shutdown();
}
}
/**
* Discharge state handler
*
* - detect ac status
* - new state: INIT
*/
static enum charge_state state_discharge(struct charge_state_context *ctx)
{
struct batt_params *batt = &ctx->curr.batt;
int8_t bat_temp_c = DECI_KELVIN_TO_CELSIUS(batt->temperature);
if (ctx->curr.ac)
return PWR_STATE_REINIT;
if (ctx->curr.error)
return PWR_STATE_ERROR;
/* Handle overtemp in discharging state by powering off host */
if ((bat_temp_c >= ctx->battery->discharging_max_c ||
bat_temp_c < ctx->battery->discharging_min_c) &&
chipset_in_state(CHIPSET_STATE_ON)) {
CPRINTS("charge force shutdown due to battery temp");
chipset_force_shutdown();
host_set_single_event(EC_HOST_EVENT_BATTERY_SHUTDOWN);
}
return PWR_STATE_UNCHANGE;
}
static void thermal_control(void)
{
int i, j, t, rv, f;
int count_over[EC_TEMP_THRESH_COUNT];
int count_under[EC_TEMP_THRESH_COUNT];
int num_valid_limits[EC_TEMP_THRESH_COUNT];
int num_sensors_read;
int fmax;
int dptf_tripped;
int temp_fan_configured;
/* Get ready to count things */
memset(count_over, 0, sizeof(count_over));
memset(count_under, 0, sizeof(count_under));
memset(num_valid_limits, 0, sizeof(num_valid_limits));
num_sensors_read = 0;
fmax = 0;
dptf_tripped = 0;
temp_fan_configured = 0;
/* go through all the sensors */
for (i = 0; i < TEMP_SENSOR_COUNT; ++i) {
/* read one */
rv = temp_sensor_read(i, &t);
if (rv != EC_SUCCESS)
continue;
else
num_sensors_read++;
/* check all the limits */
for (j = 0; j < EC_TEMP_THRESH_COUNT; j++) {
int limit = thermal_params[i].temp_host[j];
if (limit) {
num_valid_limits[j]++;
if (t > limit)
count_over[j]++;
else if (t < limit)
count_under[j]++;
}
}
/* figure out the max fan needed, too */
if (thermal_params[i].temp_fan_off &&
thermal_params[i].temp_fan_max) {
f = thermal_fan_percent(thermal_params[i].temp_fan_off,
thermal_params[i].temp_fan_max,
t);
if (f > fmax)
fmax = f;
temp_fan_configured = 1;
}
/* and check the dptf thresholds */
dptf_tripped |= dpft_check_temp_threshold(i, t);
}
if (!num_sensors_read) {
/*
* Trigger a SMI event if we can't read any sensors.
*
* In theory we could do something more elaborate like forcing
* the system to shut down if no sensors are available after
* several retries. This is a very unlikely scenario -
* particularly on LM4-based boards, since the LM4 has its own
* internal temp sensor. It's most likely to occur during
* bringup of a new board, where we haven't debugged the I2C
* bus to the sensors; forcing a shutdown in that case would
* merely hamper board bringup.
*/
smi_sensor_failure_warning();
return;
}
/* See what the aggregated limits are. Any temp over the limit
* means it's hot, but all temps have to be under the limit to
* be cool again.
*/
for (j = 0; j < EC_TEMP_THRESH_COUNT; j++) {
if (count_over[j])
cond_set_true(&cond_hot[j]);
else if (count_under[j] == num_valid_limits[j])
cond_set_false(&cond_hot[j]);
}
/* What do we do about it? (note hard-coded logic). */
if (cond_went_true(&cond_hot[EC_TEMP_THRESH_HALT])) {
CPRINTS("thermal SHUTDOWN");
chipset_force_shutdown();
} else if (cond_went_false(&cond_hot[EC_TEMP_THRESH_HALT])) {
/* We don't reboot automatically - the user has to push
* the power button. It's likely that we can't even
* detect this sensor transition until then, but we
* do have to check in order to clear the cond_t.
*/
CPRINTS("thermal no longer shutdown");
}
if (cond_went_true(&cond_hot[EC_TEMP_THRESH_HIGH])) {
CPRINTS("thermal HIGH");
throttle_ap(THROTTLE_ON, THROTTLE_HARD, THROTTLE_SRC_THERMAL);
} else if (cond_went_false(&cond_hot[EC_TEMP_THRESH_HIGH])) {
CPRINTS("thermal no longer high");
throttle_ap(THROTTLE_OFF, THROTTLE_HARD, THROTTLE_SRC_THERMAL);
}
if (cond_went_true(&cond_hot[EC_TEMP_THRESH_WARN])) {
CPRINTS("thermal WARN");
throttle_ap(THROTTLE_ON, THROTTLE_SOFT, THROTTLE_SRC_THERMAL);
} else if (cond_went_false(&cond_hot[EC_TEMP_THRESH_WARN])) {
CPRINTS("thermal no longer warn");
throttle_ap(THROTTLE_OFF, THROTTLE_SOFT, THROTTLE_SRC_THERMAL);
}
if (temp_fan_configured) {
#ifdef CONFIG_FANS
/* TODO(crosbug.com/p/23797): For now, we just treat all fans the
* same. It would be better if we could assign different thermal
* profiles to each fan - in case one fan cools the CPU while another
* cools the radios or battery.
*/
for (i = 0; i < CONFIG_FANS; i++)
fan_set_percent_needed(i, fmax);
#endif
}
/* Don't forget to signal any DPTF thresholds */
if (dptf_tripped)
host_set_single_event(EC_HOST_EVENT_THERMAL_THRESHOLD);
}
test_mockable_static void smi_sensor_failure_warning(void)
{
CPRINTS("can't read any temp sensors!");
host_set_single_event(EC_HOST_EVENT_THERMAL);
}
/**
* Common handler for charging states.
*
* This handler gets battery charging parameters, charger state, ac state, and
* timestamp. It also fills memory map and issues power events on state change.
*/
static int state_common(struct charge_state_context *ctx)
{
int rv, d;
struct charge_state_data *curr = &ctx->curr;
struct charge_state_data *prev = &ctx->prev;
struct batt_params *batt = &ctx->curr.batt;
uint8_t *batt_flags = ctx->memmap_batt_flags;
/* Copy previous state and init new state */
ctx->prev = ctx->curr;
curr->ts = get_time();
curr->error = 0;
/* Detect AC change */
curr->ac = charge_get_flags() & CHARGE_FLAG_EXTERNAL_POWER;
if (curr->ac != prev->ac) {
if (curr->ac) {
/* AC on
* Initialize charger to power on reset mode
*/
rv = charger_post_init();
if (rv)
curr->error |= F_CHARGER_INIT;
}
}
if (curr->ac) {
*batt_flags |= EC_BATT_FLAG_AC_PRESENT;
if (charger_get_voltage(&curr->charging_voltage)) {
charge_request(0, 0);
curr->error |= F_CHARGER_VOLTAGE;
}
if (charger_get_current(&curr->charging_current)) {
charge_request(0, 0);
curr->error |= F_CHARGER_CURRENT;
}
#ifdef CONFIG_CHARGER_EN_GPIO
if (!charge_get_charger_en_gpio()) {
curr->charging_voltage = 0;
curr->charging_current = 0;
}
#endif
} else {
*batt_flags &= ~EC_BATT_FLAG_AC_PRESENT;
/* AC disconnected should get us out of force idle mode. */
state_machine_force_idle = 0;
}
#if defined(CONFIG_BATTERY_PRESENT_CUSTOM) || \
defined(CONFIG_BATTERY_PRESENT_GPIO)
if (battery_is_present() == BP_NO) {
curr->error |= F_BATTERY_NOT_CONNECTED;
return curr->error;
}
#endif
/* Read params and see if battery is responsive */
battery_get_params(batt);
if (!(batt->flags & BATT_FLAG_RESPONSIVE)) {
/* Check low battery condition and retry */
if (curr->ac && ctx->battery_responsive &&
!(curr->error & F_CHARGER_MASK)) {
ctx->battery_responsive = 0;
/*
* Try to revive ultra low voltage pack. Charge
* battery pack with minimum current and maximum
* voltage for 30 seconds.
*/
charge_request(ctx->battery->voltage_max,
ctx->battery->precharge_current);
for (d = 0; d < PRECHARGE_TIMEOUT; d++) {
sleep(1);
battery_get_params(batt);
if (batt->flags & BATT_FLAG_RESPONSIVE) {
ctx->battery_responsive = 1;
break;
}
}
}
/* Set error if battery is still unresponsive */
if (!(batt->flags & BATT_FLAG_RESPONSIVE)) {
curr->error |= F_BATTERY_UNRESPONSIVE;
return curr->error;
}
} else {
ctx->battery_responsive = 1;
}
/* Translate flags */
if (batt->flags & BATT_FLAG_BAD_ANY)
curr->error |= F_BATTERY_GET_PARAMS;
if (batt->flags & BATT_FLAG_BAD_VOLTAGE)
curr->error |= F_BATTERY_VOLTAGE;
if (batt->flags & BATT_FLAG_BAD_STATE_OF_CHARGE)
curr->error |= F_BATTERY_STATE_OF_CHARGE;
*ctx->memmap_batt_volt = batt->voltage;
/* Memory mapped value: discharge rate */
*ctx->memmap_batt_rate = batt->current < 0 ?
-batt->current : batt->current;
/* Fake state of charge if necessary */
if (fake_state_of_charge >= 0) {
batt->state_of_charge = fake_state_of_charge;
curr->error &= ~F_BATTERY_STATE_OF_CHARGE;
}
if (batt->state_of_charge != prev->batt.state_of_charge) {
rv = battery_full_charge_capacity(&d);
if (!rv && d != *(int *)host_get_memmap(EC_MEMMAP_BATT_LFCC)) {
*(int *)host_get_memmap(EC_MEMMAP_BATT_LFCC) = d;
/* Notify host to re-read battery information */
host_set_single_event(EC_HOST_EVENT_BATTERY);
}
}
/* Prevent deep discharging */
if (!curr->ac) {
if ((batt->state_of_charge < BATTERY_LEVEL_SHUTDOWN &&
!(curr->error & F_BATTERY_STATE_OF_CHARGE)) ||
(batt->voltage <= ctx->battery->voltage_min &&
!(curr->error & F_BATTERY_VOLTAGE)))
low_battery_shutdown(ctx);
}
/* Check battery presence */
if (curr->error & F_BATTERY_MASK) {
*ctx->memmap_batt_flags &= ~EC_BATT_FLAG_BATT_PRESENT;
return curr->error;
}
*ctx->memmap_batt_flags |= EC_BATT_FLAG_BATT_PRESENT;
/* Battery charge level low */
if (batt->state_of_charge <= BATTERY_LEVEL_LOW &&
prev->batt.state_of_charge > BATTERY_LEVEL_LOW)
host_set_single_event(EC_HOST_EVENT_BATTERY_LOW);
/* Battery charge level critical */
if (batt->state_of_charge <= BATTERY_LEVEL_CRITICAL) {
*ctx->memmap_batt_flags |= EC_BATT_FLAG_LEVEL_CRITICAL;
/* Send battery critical host event */
if (prev->batt.state_of_charge > BATTERY_LEVEL_CRITICAL)
host_set_single_event(EC_HOST_EVENT_BATTERY_CRITICAL);
} else {
*ctx->memmap_batt_flags &= ~EC_BATT_FLAG_LEVEL_CRITICAL;
}
#ifdef CONFIG_BATTERY_OVERRIDE_PARAMS
/* Apply battery pack vendor charging method */
battery_override_params(batt);
#endif
#ifdef CONFIG_CHARGER_CURRENT_LIMIT
if (batt->desired_current > CONFIG_CHARGER_CURRENT_LIMIT)
batt->desired_current = CONFIG_CHARGER_CURRENT_LIMIT;
#endif
if (batt->desired_current > user_current_limit)
batt->desired_current = user_current_limit;
if (fake_state_of_charge >= 0)
*ctx->memmap_batt_cap =
fake_state_of_charge *
*(int *)host_get_memmap(EC_MEMMAP_BATT_LFCC) / 100;
else if (battery_remaining_capacity(&d))
ctx->curr.error |= F_BATTERY_CAPACITY;
else
*ctx->memmap_batt_cap = d;
return ctx->curr.error;
}
static void pd_exchange_status(void)
{
struct ec_params_pd_status ec_status;
struct ec_response_pd_status pd_status;
int rv = 0;
#ifdef CONFIG_HOSTCMD_PD_PANIC
static int pd_in_rw;
#endif
/* Send PD charge state and battery state of charge */
ec_status.charge_state = charge_state;
if (charge_get_flags() & CHARGE_FLAG_BATT_RESPONSIVE)
ec_status.batt_soc = charge_get_percent();
else
ec_status.batt_soc = -1;
rv = pd_host_command(EC_CMD_PD_EXCHANGE_STATUS, 1, &ec_status,
sizeof(struct ec_params_pd_status), &pd_status,
sizeof(struct ec_response_pd_status));
/* If PD doesn't support new command version, try old version */
if (rv == -EC_RES_INVALID_VERSION)
rv = pd_host_command(EC_CMD_PD_EXCHANGE_STATUS, 0, &ec_status,
sizeof(struct ec_params_pd_status), &pd_status,
sizeof(struct ec_response_pd_status));
if (rv < 0) {
CPRINTS("Host command to PD MCU failed");
return;
}
#ifdef CONFIG_HOSTCMD_PD_PANIC
/*
* Check if PD MCU is in RW. If PD MCU was in RW and is now in RO
* AND it did not sysjump to RO, then it must have crashed, and
* therefore we should panic as well.
*/
if (pd_status.status & PD_STATUS_IN_RW) {
pd_in_rw = 1;
} else if (pd_in_rw &&
!(pd_status.status & PD_STATUS_JUMPED_TO_IMAGE)) {
panic_printf("PD crash");
software_panic(PANIC_SW_PD_CRASH, 0);
}
#endif
#ifdef HAS_TASK_LIGHTBAR
/*
* If charge port has changed, and it was initialized, then show
* battery status on lightbar.
*/
if (pd_status.active_charge_port != charge_port) {
if (charge_port != CHARGE_PORT_UNINITIALIZED) {
charge_port = pd_status.active_charge_port;
lightbar_sequence(LIGHTBAR_TAP);
} else {
charge_port = pd_status.active_charge_port;
}
}
#else
/* Store the active charge port */
charge_port = pd_status.active_charge_port;
#endif
/* Set input current limit */
rv = charge_set_input_current_limit(MAX(pd_status.curr_lim_ma,
CONFIG_CHARGER_INPUT_CURRENT));
if (rv < 0)
CPRINTS("Failed to set input current limit from PD MCU");
/* If PD is signalling host event, then pass it up to AP */
if (pd_status.status & PD_STATUS_HOST_EVENT)
host_set_single_event(EC_HOST_EVENT_PD_MCU);
}
static void update_dynamic_battery_info(void)
{
/* The memmap address is constant. We should fix these calls somehow. */
int *memmap_volt = (int *)host_get_memmap(EC_MEMMAP_BATT_VOLT);
int *memmap_rate = (int *)host_get_memmap(EC_MEMMAP_BATT_RATE);
int *memmap_cap = (int *)host_get_memmap(EC_MEMMAP_BATT_CAP);
int *memmap_lfcc = (int *)host_get_memmap(EC_MEMMAP_BATT_LFCC);
uint8_t *memmap_flags = host_get_memmap(EC_MEMMAP_BATT_FLAG);
uint8_t tmp;
int send_batt_status_event = 0;
int send_batt_info_event = 0;
static int __bss_slow batt_present;
tmp = 0;
if (curr.ac)
tmp |= EC_BATT_FLAG_AC_PRESENT;
if (curr.batt.is_present == BP_YES) {
tmp |= EC_BATT_FLAG_BATT_PRESENT;
batt_present = 1;
/* Tell the AP to read battery info if it is newly present. */
if (!(*memmap_flags & EC_BATT_FLAG_BATT_PRESENT))
send_batt_info_event++;
} else {
/*
* Require two consecutive updates with BP_NOT_SURE
* before reporting it gone to the host.
*/
if (batt_present)
tmp |= EC_BATT_FLAG_BATT_PRESENT;
else if (*memmap_flags & EC_BATT_FLAG_BATT_PRESENT)
send_batt_info_event++;
batt_present = 0;
}
if (!(curr.batt.flags & BATT_FLAG_BAD_VOLTAGE))
*memmap_volt = curr.batt.voltage;
if (!(curr.batt.flags & BATT_FLAG_BAD_CURRENT))
*memmap_rate = ABS(curr.batt.current);
if (!(curr.batt.flags & BATT_FLAG_BAD_REMAINING_CAPACITY)) {
/*
* If we're running off the battery, it must have some charge.
* Don't report zero charge, as that has special meaning
* to Chrome OS powerd.
*/
if (curr.batt.remaining_capacity == 0 && !curr.batt_is_charging)
*memmap_cap = 1;
else
*memmap_cap = curr.batt.remaining_capacity;
}
if (!(curr.batt.flags & BATT_FLAG_BAD_FULL_CAPACITY) &&
(curr.batt.full_capacity <= (*memmap_lfcc - LFCC_EVENT_THRESH) ||
curr.batt.full_capacity >= (*memmap_lfcc + LFCC_EVENT_THRESH))) {
*memmap_lfcc = curr.batt.full_capacity;
/* Poke the AP if the full_capacity changes. */
send_batt_info_event++;
}
if (curr.batt.is_present == BP_YES &&
!(curr.batt.flags & BATT_FLAG_BAD_STATE_OF_CHARGE) &&
curr.batt.state_of_charge <= BATTERY_LEVEL_CRITICAL)
tmp |= EC_BATT_FLAG_LEVEL_CRITICAL;
tmp |= curr.batt_is_charging ? EC_BATT_FLAG_CHARGING :
EC_BATT_FLAG_DISCHARGING;
/* Tell the AP to re-read battery status if charge state changes */
if (*memmap_flags != tmp)
send_batt_status_event++;
/* Update flags before sending host events. */
*memmap_flags = tmp;
if (send_batt_info_event)
host_set_single_event(EC_HOST_EVENT_BATTERY);
if (send_batt_status_event)
host_set_single_event(EC_HOST_EVENT_BATTERY_STATUS);
}