static void onewire_led_tick(void)
{
static enum led_color current_color = LED_COLOR_COUNT;
static int tick_count;
enum led_color new_color = LED_OFF;
uint32_t chflags = charge_get_flags();
tick_count++;
if (!(chflags & CHARGE_FLAG_EXTERNAL_POWER)) {
/* AC isn't present, so the power LED on the AC plug is off */
current_color = LED_OFF;
return;
}
/* Translate charge state to LED color */
switch (charge_get_state()) {
case PWR_STATE_IDLE:
if (chflags & CHARGE_FLAG_FORCE_IDLE)
new_color = (tick_count & 1) ? LED_GREEN : LED_OFF;
else
new_color = LED_GREEN;
break;
case PWR_STATE_CHARGE:
new_color = LED_YELLOW;
break;
case PWR_STATE_CHARGE_NEAR_FULL:
new_color = LED_GREEN;
break;
case PWR_STATE_ERROR:
new_color = LED_RED;
break;
default:
/* Other states don't change LED color */
break;
}
/*
* The power adapter on link can partially unplug and lose its LED
* state. There's no way to detect this, so just assume it forgets its
* state every 10 seconds.
*/
if (!(tick_count % 10))
current_color = LED_COLOR_COUNT;
/* If current color is still correct, leave now */
if (new_color == current_color)
return;
/* Update LED */
if (!led_set(new_color))
current_color = new_color;
}
static void pd_exchange_update_ec_status(struct ec_params_pd_status *ec_status)
{
/* Send PD charge state and battery state of charge */
#ifdef CONFIG_HOSTCMD_PD_CHG_CTRL
ec_status->charge_state = charge_state;
#endif
if (charge_get_flags() & CHARGE_FLAG_BATT_RESPONSIVE)
ec_status->batt_soc = charge_get_percent();
else
ec_status->batt_soc = -1;
}
static int charge_force_idle(int enable)
{
if (enable) {
/*
* Force-idle state is only meaningful if external power is
* present. If it's not present we can't charge anyway...
*/
if (!(charge_get_flags() & CHARGE_FLAG_EXTERNAL_POWER))
return EC_ERROR_UNKNOWN;
charger_post_init();
}
state_machine_force_idle = enable;
return EC_SUCCESS;
}
static void glados_led_set_battery(void)
{
static int battery_ticks;
uint32_t chflags = charge_get_flags();
battery_ticks++;
/* BAT LED behavior:
* Same as the chromeos spec
* Green/Amber for CHARGE_FLAG_FORCE_IDLE
*/
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
glados_led_set_color_battery(LED_AMBER);
break;
case PWR_STATE_DISCHARGE:
/* Less than 3%, blink one second every two second */
if (charge_get_percent() < CRITICAL_LOW_BATTERY_PERCENTAGE)
glados_led_set_color_battery(
(battery_ticks % LED_TOTAL_2SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF);
/* Less than 10%, blink one second every four seconds */
else if (charge_get_percent() < LOW_BATTERY_PERCENTAGE)
glados_led_set_color_battery(
(battery_ticks % LED_TOTAL_4SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF);
else
glados_led_set_color_battery(LED_OFF);
break;
case PWR_STATE_ERROR:
glados_led_set_color_battery(
(battery_ticks % LED_TOTAL_2SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_RED : LED_OFF);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
glados_led_set_color_battery(LED_GREEN);
break;
case PWR_STATE_IDLE: /* External power connected in IDLE */
if (chflags & CHARGE_FLAG_FORCE_IDLE)
glados_led_set_color_battery(
(battery_ticks % LED_TOTAL_4SECS_TICKS <
LED_ON_2SECS_TICKS) ? LED_GREEN : LED_AMBER);
else
glados_led_set_color_battery(LED_GREEN);
break;
default:
/* Other states don't alter LED behavior */
break;
}
}
static void big_led_set_battery(void)
{
static int battery_second;
uint32_t chflags = charge_get_flags();
battery_second++;
/* BAT LED behavior:
* Fully charged / idle: Blue
* Force idle (for factory): 2 secs of blue, 2 secs of yellow
* Under charging: Orange
* Battery low (10%): Orange in breeze mode (1 sec on, 3 sec off)
* Battery critical low (less than 3%) or abnormal battery
* situation: Orange in blinking mode (1 sec on, 1 sec off)
* Using battery or not connected to AC power: OFF
*/
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
bat_led_set_color(LED_ORANGE);
break;
case PWR_STATE_DISCHARGE:
if (charge_get_percent() < 3)
bat_led_set_color((battery_second & 1)
? LED_OFF : LED_ORANGE);
else if (charge_get_percent() < 10)
bat_led_set_color((battery_second & 3)
? LED_OFF : LED_ORANGE);
else
bat_led_set_color(LED_OFF);
break;
case PWR_STATE_ERROR:
bat_led_set_color((battery_second & 1) ? LED_OFF : LED_ORANGE);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
bat_led_set_color(LED_BLUE);
break;
case PWR_STATE_IDLE: /* External power connected in IDLE. */
if (chflags & CHARGE_FLAG_FORCE_IDLE)
bat_led_set_color(
(battery_second & 0x2) ? LED_BLUE : LED_ORANGE);
else
bat_led_set_color(LED_BLUE);
break;
default:
/* Other states don't alter LED behavior */
break;
}
}
static void std_led_set_battery(void)
{
static int battery_second;
uint32_t chflags = charge_get_flags();
battery_second++;
/* BAT LED behavior:
* Same as the chromeos spec
* Green/Amber for CHARGE_FLAG_FORCE_IDLE
*/
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
bat_led_set_color(LED_AMBER);
break;
case PWR_STATE_DISCHARGE:
if (charge_get_percent() < 3)
bat_led_set_color((battery_second & 1)
? LED_OFF : LED_AMBER);
else if (charge_get_percent() < 10)
bat_led_set_color((battery_second & 3)
? LED_OFF : LED_AMBER);
else
bat_led_set_color(LED_OFF);
break;
case PWR_STATE_ERROR:
bat_led_set_color((battery_second & 1) ? LED_OFF : LED_RED);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
bat_led_set_color(LED_GREEN);
break;
case PWR_STATE_IDLE: /* External power connected in IDLE. */
if (chflags & CHARGE_FLAG_FORCE_IDLE)
bat_led_set_color(
(battery_second & 0x2) ? LED_GREEN : LED_AMBER);
else
bat_led_set_color(LED_GREEN);
break;
default:
/* Other states don't alter LED behavior */
break;
}
}
/**
* Called by hook task every 250 ms
*/
static void led_tick(void)
{
static unsigned ticks;
int chstate = charge_get_state();
ticks++;
/* If we don't control the LED, nothing to do */
if (!led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
return;
/* If charging error, blink orange, 25% duty cycle, 4 sec period */
if (chstate == PWR_STATE_ERROR) {
set_color((ticks % 16) < 4 ? LED_ORANGE : LED_OFF);
return;
}
/* If charge-force-idle, blink green, 50% duty cycle, 2 sec period */
if (chstate == PWR_STATE_IDLE &&
(charge_get_flags() & CHARGE_FLAG_FORCE_IDLE)) {
set_color((ticks & 0x4) ? LED_GREEN : LED_OFF);
return;
}
/* If the system is charging, solid orange */
if (chstate == PWR_STATE_CHARGE) {
set_color(LED_ORANGE);
return;
}
/* If AC connected and fully charged (or close to it), solid green */
if (chstate == PWR_STATE_CHARGE_NEAR_FULL ||
chstate == PWR_STATE_IDLE) {
set_color(LED_GREEN);
return;
}
/* Otherwise, system is off and AC not connected, LED off */
set_color(LED_OFF);
}
static int test_external_funcs(void)
{
int rv, temp;
uint32_t flags;
int state;
/* Connect the AC */
test_setup(1);
flags = charge_get_flags();
TEST_ASSERT(flags & CHARGE_FLAG_EXTERNAL_POWER);
TEST_ASSERT(!(flags & CHARGE_FLAG_FORCE_IDLE));
/* Invalid or do-nothing commands first */
UART_INJECT("chg\n");
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_CHARGE);
flags = charge_get_flags();
TEST_ASSERT(flags & CHARGE_FLAG_EXTERNAL_POWER);
TEST_ASSERT(!(flags & CHARGE_FLAG_FORCE_IDLE));
UART_INJECT("chg blahblah\n");
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_CHARGE);
flags = charge_get_flags();
TEST_ASSERT(flags & CHARGE_FLAG_EXTERNAL_POWER);
TEST_ASSERT(!(flags & CHARGE_FLAG_FORCE_IDLE));
UART_INJECT("chg idle\n");
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_CHARGE);
flags = charge_get_flags();
TEST_ASSERT(flags & CHARGE_FLAG_EXTERNAL_POWER);
TEST_ASSERT(!(flags & CHARGE_FLAG_FORCE_IDLE));
UART_INJECT("chg idle blargh\n");
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_CHARGE);
flags = charge_get_flags();
TEST_ASSERT(flags & CHARGE_FLAG_EXTERNAL_POWER);
TEST_ASSERT(!(flags & CHARGE_FLAG_FORCE_IDLE));
/* Now let's force idle on and off */
UART_INJECT("chg idle on\n");
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_IDLE);
flags = charge_get_flags();
TEST_ASSERT(flags & CHARGE_FLAG_EXTERNAL_POWER);
TEST_ASSERT(flags & CHARGE_FLAG_FORCE_IDLE);
UART_INJECT("chg idle off\n");
wait_charging_state();
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_CHARGE);
flags = charge_get_flags();
TEST_ASSERT(flags & CHARGE_FLAG_EXTERNAL_POWER);
TEST_ASSERT(!(flags & CHARGE_FLAG_FORCE_IDLE));
/* and the rest */
TEST_ASSERT(charge_get_state() == PWR_STATE_CHARGE);
TEST_ASSERT(!charge_want_shutdown());
TEST_ASSERT(charge_get_percent() == 50);
temp = 0;
rv = charge_temp_sensor_get_val(0, &temp);
TEST_ASSERT(rv == EC_SUCCESS);
TEST_ASSERT(K_TO_C(temp) == 25);
return EC_SUCCESS;
}
static int test_charge_state(void)
{
enum charge_state state;
uint32_t flags;
/* On AC */
test_setup(1);
ccprintf("[CHARGING TEST] AC on\n");
/* Detach battery, charging error */
ccprintf("[CHARGING TEST] Detach battery\n");
TEST_ASSERT(test_detach_i2c(I2C_PORT_BATTERY, BATTERY_ADDR) ==
EC_SUCCESS);
msleep(BATTERY_DETACH_DELAY);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_ERROR);
/* Attach battery again, charging */
ccprintf("[CHARGING TEST] Attach battery\n");
test_attach_i2c(I2C_PORT_BATTERY, BATTERY_ADDR);
/* And changing full capacity should trigger a host event */
ev_clear(EC_HOST_EVENT_BATTERY);
sb_write(SB_FULL_CHARGE_CAPACITY, 0xeff0);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_CHARGE);
TEST_ASSERT(ev_is_set(EC_HOST_EVENT_BATTERY));
/* Unplug AC, discharging at 1000mAh */
ccprintf("[CHARGING TEST] AC off\n");
gpio_set_level(GPIO_AC_PRESENT, 0);
sb_write(SB_CURRENT, -1000);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_DISCHARGE);
flags = charge_get_flags();
TEST_ASSERT(!(flags & CHARGE_FLAG_EXTERNAL_POWER));
TEST_ASSERT(!(flags & CHARGE_FLAG_FORCE_IDLE));
/* Discharging waaaay overtemp is ignored */
ccprintf("[CHARGING TEST] AC off, batt temp = 0xffff\n");
gpio_set_level(GPIO_AC_PRESENT, 0);
sb_write(SB_CURRENT, -1000);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_DISCHARGE);
sb_write(SB_TEMPERATURE, 0xffff);
state = wait_charging_state();
TEST_ASSERT(!is_shutdown);
TEST_ASSERT(state == PWR_STATE_DISCHARGE);
sb_write(SB_TEMPERATURE, CELSIUS_TO_DECI_KELVIN(40));
/* Discharging overtemp */
ccprintf("[CHARGING TEST] AC off, batt temp = 90 C\n");
gpio_set_level(GPIO_AC_PRESENT, 0);
sb_write(SB_CURRENT, -1000);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_DISCHARGE);
sb_write(SB_TEMPERATURE, CELSIUS_TO_DECI_KELVIN(90));
state = wait_charging_state();
TEST_ASSERT(is_shutdown);
TEST_ASSERT(state == PWR_STATE_DISCHARGE);
sb_write(SB_TEMPERATURE, CELSIUS_TO_DECI_KELVIN(40));
/* Force idle */
ccprintf("[CHARGING TEST] AC on, force idle\n");
gpio_set_level(GPIO_AC_PRESENT, 1);
sb_write(SB_CURRENT, 1000);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_CHARGE);
flags = charge_get_flags();
TEST_ASSERT(flags & CHARGE_FLAG_EXTERNAL_POWER);
TEST_ASSERT(!(flags & CHARGE_FLAG_FORCE_IDLE));
charge_control(CHARGE_CONTROL_IDLE);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_IDLE);
flags = charge_get_flags();
TEST_ASSERT(flags & CHARGE_FLAG_EXTERNAL_POWER);
TEST_ASSERT(flags & CHARGE_FLAG_FORCE_IDLE);
charge_control(CHARGE_CONTROL_NORMAL);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_CHARGE);
/* Force discharge */
ccprintf("[CHARGING TEST] AC on, force discharge\n");
gpio_set_level(GPIO_AC_PRESENT, 1);
sb_write(SB_CURRENT, 1000);
charge_control(CHARGE_CONTROL_DISCHARGE);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_IDLE);
TEST_ASSERT(is_force_discharge);
charge_control(CHARGE_CONTROL_NORMAL);
state = wait_charging_state();
TEST_ASSERT(state == PWR_STATE_CHARGE);
TEST_ASSERT(!is_force_discharge);
return EC_SUCCESS;
}
/**
* 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 led_set_battery(void)
{
static int battery_ticks;
static int suspend_ticks;
static int previous_state_suspend;
uint32_t chflags = charge_get_flags();
battery_ticks++;
suspend_ticks++;
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
led_set_color_battery(LED_AMBER);
break;
case PWR_STATE_DISCHARGE:
/* Less than 3%, blink one second every two second */
if (!chipset_in_state(CHIPSET_STATE_ANY_OFF) &&
charge_get_percent() < CRITICAL_LOW_BATTERY_PERCENTAGE)
led_set_color_battery(
(battery_ticks % LED_TOTAL_2SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF);
/* Less than 10%, blink one second every four seconds */
else if (!chipset_in_state(CHIPSET_STATE_ANY_OFF) &&
charge_get_percent() < LOW_BATTERY_PERCENTAGE)
led_set_color_battery(
(battery_ticks % LED_TOTAL_4SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF);
else {
if (chipset_in_state(CHIPSET_STATE_SUSPEND
| CHIPSET_STATE_STANDBY)) {
if (!previous_state_suspend)
suspend_ticks = 0;
/* Blink once every four seconds. */
led_set_color_battery(
(suspend_ticks % LED_TOTAL_4SECS_TICKS)
< LED_ON_1SEC_TICKS ?
LED_AMBER : LED_OFF);
previous_state_suspend = 1;
return;
}
if (chipset_in_state(CHIPSET_STATE_ON))
led_set_color_battery(LED_BLUE);
else
led_set_color_battery(LED_OFF);
}
break;
case PWR_STATE_ERROR:
led_set_color_battery(
(battery_ticks % LED_TOTAL_2SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
led_set_color_battery(LED_BLUE);
break;
case PWR_STATE_IDLE: /* External power connected in IDLE */
if (chflags & CHARGE_FLAG_FORCE_IDLE)
led_set_color_battery(
(battery_ticks % LED_TOTAL_4SECS_TICKS <
LED_ON_2SECS_TICKS) ? LED_AMBER : LED_BLUE);
else
led_set_color_battery(LED_BLUE);
break;
default:
/* Other states don't alter LED behavior */
break;
}
previous_state_suspend = 0;
}