diff options
| -rw-r--r-- | common/motion_sense.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/common/motion_sense.c b/common/motion_sense.c index 662f07a692..65cb7de93d 100644 --- a/common/motion_sense.c +++ b/common/motion_sense.c @@ -183,7 +183,7 @@ static inline int motion_sensor_time_to_read(const timestamp_t *ts, if (rate_mhz == 0) return 0; /* - * converting from kHz to us. + * converting from mHz to us. * If within 95% of the time, check sensor. */ return time_after(ts->le.lo, @@ -241,8 +241,12 @@ int motion_sense_set_data_rate(struct motion_sensor_t *sensor) BASE_ODR(sensor->config[SENSOR_CONFIG_AP].odr)); mutex_lock(&g_sensor_mutex); if (ap_odr_mhz) - sensor->oversampling_ratio = - sensor->drv->get_data_rate(sensor) / ap_odr_mhz; + /* + * In case the AP want to run the sensors faster than it can, + * be sure we don't see the ratio to 0. + */ + sensor->oversampling_ratio = MIN(1, + sensor->drv->get_data_rate(sensor) / ap_odr_mhz); else sensor->oversampling_ratio = 0; @@ -266,6 +270,10 @@ static int motion_sense_set_ec_rate_from_ap( return 0; #ifdef CONFIG_ACCEL_FORCE_MODE_MASK if (CONFIG_ACCEL_FORCE_MODE_MASK & (1 << (sensor - motion_sensors))) + /* + * AP EC sampling rate does not matter: we will collect at the + * requested sensor frequency. + */ goto end_set_ec_rate_from_ap; #endif if (odr_mhz == 0) |