Currently suspending while sensors are one will result in timestamping
continuing without gap at resume. It can work with monotonic clock but
not with other clocks. Fix that by resetting timestamping.
Fixes: ec74ae9fd37c ("iio: imu: inv_icm42600: add accurate timestamping")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@xxxxxxx>
Link: https://patch.msgid.link/20241113-inv_icm42600-fix-timestamps-after-suspend-v1-1-dfc77c394173@xxxxxxx
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
index e43538e536f0..ef9875d3b79d 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
@@ -829,6 +829,8 @@ static int inv_icm42600_suspend(struct device *dev)
static int inv_icm42600_resume(struct device *dev)
{
struct inv_icm42600_state *st = dev_get_drvdata(dev);
+ struct inv_icm42600_sensor_state *gyro_st = iio_priv(st->indio_gyro);
+ struct inv_icm42600_sensor_state *accel_st = iio_priv(st->indio_accel);
int ret;
mutex_lock(&st->lock);
@@ -849,9 +851,12 @@ static int inv_icm42600_resume(struct device *dev)
goto out_unlock;
/* restore FIFO data streaming */
- if (st->fifo.on)
+ if (st->fifo.on) {
+ inv_sensors_timestamp_reset(&gyro_st->ts);
+ inv_sensors_timestamp_reset(&accel_st->ts);
ret = regmap_write(st->map, INV_ICM42600_REG_FIFO_CONFIG,
INV_ICM42600_FIFO_CONFIG_STREAM);
+ }
out_unlock:
mutex_unlock(&st->lock);
