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| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2022-02-06 00:57:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-02 13:42:53 +0300 |
| commit | eabcc609cb8accf16a5c53fd9b91a827854b1ca9 (patch) | |
| tree | 10d9a822069f76db69fd73f4dada4da29225a0d7 | |
| parent | b8d411a96227cf182061c4761d77c96615b515c7 (diff) | |
| download | linux-eabcc609cb8accf16a5c53fd9b91a827854b1ca9.tar.xz | |
iio: imu: st_lsm6dsx: wait for settling time in st_lsm6dsx_read_oneshot
commit ea85bf906466191b58532bb19f4fbb4591f0a77e upstream.
We need to wait for sensor settling time (~ 3/ODR) before reading data
in st_lsm6dsx_read_oneshot routine in order to avoid corrupted samples.
Fixes: 290a6ce11d93 ("iio: imu: add support to lsm6dsx driver")
Reported-by: Mario Tesi <mario.tesi@st.com>
Tested-by: Mario Tesi <mario.tesi@st.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/b41ebda5535895298716c76d939f9f165fcd2d13.1644098120.git.lorenzo@kernel.org
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index 558ca3843bb9..2c528425b03b 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -1558,8 +1558,12 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor, if (err < 0) return err; + /* + * we need to wait for sensor settling time before + * reading data in order to avoid corrupted samples + */ delay = 1000000000 / sensor->odr; - usleep_range(delay, 2 * delay); + usleep_range(3 * delay, 4 * delay); err = st_lsm6dsx_read_locked(hw, addr, &data, sizeof(data)); if (err < 0) |