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iio: imu: inv_icm42600: fix timestamps after suspend if sensor is on

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commit 65a60a590142c54a3f3be11ff162db2d5b0e1e06 upstream.

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: ec74ae9fd3 ("iio: imu: inv_icm42600: add accurate timestamping")
Cc: stable@vger.kernel.org
Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://patch.msgid.link/20241113-inv_icm42600-fix-timestamps-after-suspend-v1-1-dfc77c394173@tdk.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jean-Baptiste Maneyrol 2024-11-13 21:25:45 +01:00 committed by Greg Kroah-Hartman
parent f2e4823baa
commit d3e25180ba
1 changed files with 6 additions and 1 deletions
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7
drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
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@ -720,6 +720,8 @@ out_unlock:
static int __maybe_unused inv_icm42600_resume(struct device *dev)
{
struct inv_icm42600_state *st = dev_get_drvdata(dev);
struct inv_icm42600_timestamp *gyro_ts = iio_priv(st->indio_gyro);
struct inv_icm42600_timestamp *accel_ts = iio_priv(st->indio_accel);
int ret;
mutex_lock(&st->lock);
@ -740,9 +742,12 @@ static int __maybe_unused inv_icm42600_resume(struct device *dev)
goto out_unlock;
/* restore FIFO data streaming */
if (st->fifo.on)
if (st->fifo.on) {
inv_icm42600_timestamp_reset(gyro_ts);
inv_icm42600_timestamp_reset(accel_ts);
ret = regmap_write(st->map, INV_ICM42600_REG_FIFO_CONFIG,
INV_ICM42600_FIFO_CONFIG_STREAM);
}
out_unlock:
mutex_unlock(&st->lock);