/*
* Main timer handle: check every PWRKEY_DETECT_FREQUENCY to see
* if power key is pressed.
* Shutdown the device if power key is release before
* (PWRKEY_LONG_PRESS_COUNT/MPM_SLEEP_TIMETICK_COUNT) seconds.
*/
static enum handler_return long_press_pwrkey_timer_func(struct timer *p_timer,
void *arg)
{
uint32_t sclk_count = platform_get_sclk_count();
/*
* The following condition is treated as the power key
* is pressed long enough.
* 1. if the power key is pressed last for PWRKEY_LONG_PRESS_COUNT.
*/
if (sclk_count > PWRKEY_LONG_PRESS_COUNT) {
timer_cancel(p_timer);
pon_timer_complete = 1;
} else {
if (pm8x41_get_pwrkey_is_pressed()) {
/*
* For normal man response is > 0.1 secs, so we use 0.05 secs default
* for software to be safely detect if there is a key release action.
*/
timer_set_oneshot(p_timer, PWRKEY_DETECT_FREQUENCY,
long_press_pwrkey_timer_func, NULL);
} else {
shutdown_device();
}
}
return INT_RESCHEDULE;
}
/*
* Function to support for shutdown detection
* If below condition is met, the function will shut down
* the device. Otherwise it will do nothing and return to
* normal boot.
* condition:
* 1. it is triggered by power key &&
* 2. the power key is released before
* (PWRKEY_LONG_PRESS_COUNT/MPM_SLEEP_TIMETICK_COUNT) seconds.
*/
void shutdown_detect()
{
/*
* If it is booted by power key tirigger.
* Initialize pon_timer and call long_press_pwrkey_timer_func
* function to check if the power key is last press long enough.
*/
if (is_pwrkey_pon_reason()) {
if(!pm8x41_get_pwrkey_is_pressed()){
shutdown_device();
}
timer_initialize(&pon_timer);
timer_set_oneshot(&pon_timer, 0,(timer_callback)long_press_pwrkey_timer_func, NULL);
/*
* Wait until long press power key timeout
*
* It will be confused to end users if we shutdown the device
* after the splash screen displayed. But it can be moved the
* wait here if the boot time is much more considered.
*/
wait_for_long_pwrkey_pressed();
}
}
static int target_power_key(void)
{
return pm8x41_get_pwrkey_is_pressed();
}