SP91 PMIC AuxADC待机唤醒现象

现象

日志

3,609: 12-30 13:13:25.983950  1216  1216 I [  633.918732] (1)[1216:system_server]: active wakeup source: PMIC AuxADC wakelock

12-30 14:45:36.754140  1216  1216 I [  643.931309] (0)[1216:system_server]: active wakeup source: PMIC AuxADC wakelock

CPU 被待机唤醒了
12-30 13:13:25.983855  1216  1216 I [  633.918637] (1)[1216:system_server]: PM: Wakeup pending, aborting suspend
12-30 13:13:25.983950  1216  1216 I [  633.918732] (1)[1216:system_server]: active wakeup source: PMIC AuxADC wakelock
12-30 13:13:25.984019  1216  1216 E [  633.918801] (1)[1216:system_server]: PM: Some devices failed to suspend, or early wake event detected

CPU 被待机唤醒了
12-30 14:45:36.754044  1216  1216 I [  643.931213] (0)[1216:system_server]: PM: Wakeup pending, aborting suspend
12-30 14:45:36.754140  1216  1216 I [  643.931309] (0)[1216:system_server]: active wakeup source: PMIC AuxADC wakelock
12-30 14:45:36.754207  1216  1216 E [  643.931376] (0)[1216:system_server]: PM: Some devices failed to suspend, or early wake event detected

源码

Z:\7.1\sp91_new\kernel-4.4\drivers\misc\mediatek\pmic\mt6357\v1\pmic_auxadc.c

void mt6357_auxadc_init(void)
{
HKLOG("%s\n", __func__);
wake_lock_init(&pmic_auxadc_wake_lock,
WAKE_LOCK_SUSPEND, "PMIC AuxADC wakelock");
mutex_init(&pmic_adc_mutex);
wake_lock_init(&mts_monitor_wake_lock,
WAKE_LOCK_SUSPEND, "PMIC MTS Monitor wakelock");
mutex_init(&mts_monitor_mutex);
/* Remove register setting which is set by PMIC initial setting in PL */

void pmic_auxadc_lock(void)
{
pr_notice("suhuazhi pmic_auxadc_lock");
wake_lock(&pmic_auxadc_wake_lock);
mutex_lock(&pmic_adc_mutex);
}

void pmic_auxadc_unlock(void)
{
pr_notice("suhuazhi pmic_auxadc_unlock");
mutex_unlock(&pmic_adc_mutex);
wake_unlock(&pmic_auxadc_wake_lock);
}

PMIC AuxADC

作用

唤醒周期