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authorMario Tesi <mario.tesi@st.com>2020-09-17 18:47:16 +0200
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2020-09-21 20:01:45 +0100
commit44a76de8ca4d13b157c49a16d0ef47ccff91a2e3 (patch)
treeb6878e13c8d783c75da1753300b3133c39d3396b /drivers/iio
parente8173161746d1d8a8b9dfd8968cf695efaa90d09 (diff)
iio: imu: st_lsm6dsx: Scaling factor type set to IIO_VAL_INT_PLUS_NANO
Scaling factor values for Acc lead to an unacceptable rounding of the full scale (FS) calculated by some SensorHAL on Android devices. For examples setting FS to 4g the in_accel_x_scale, in_accel_y_scale and in_accel_z_scale are 0.001196 on 6 decimal digits and the FS is 0.001196 × ((2^15) − 1) ~= 39.1893 m/s^2. Android CTS R10 SensorParameterRangeTest test expects a value greater than 39.20 m/s^2 so this test fails (ACCELEROMETER_MAX_RANGE = 4 * 9.80). Using 9 decimal digits the new scale factor is 0.001196411 and the FS now is 0.001196411 × ((2^15)−1) ~= 39.2028 m/s^2. This patch extends to IIO_VAL_INT_PLUS_NANO type the scaling factor to all IMU devices where SensorParameterRangeTest CTS test fails. Signed-off-by: Mario Tesi <mario.tesi@st.com> Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/1600361236-2285-1-git-send-email-martepisa@gmail.com
Diffstat (limited to 'drivers/iio')
-rw-r--r--drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c134
1 files changed, 77 insertions, 57 deletions
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 346c24281d26..42f485634d04 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -157,10 +157,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x20,
.mask = GENMASK(4, 3),
},
- .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
- .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
- .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
- .fs_avl[3] = { IIO_G_TO_M_S_2(732), 0x1 },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61000), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(732000), 0x1 },
.fs_len = 4,
},
[ST_LSM6DSX_ID_GYRO] = {
@@ -169,9 +169,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.mask = GENMASK(4, 3),
},
- .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
- .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
- .fs_avl[2] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750000), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
.fs_len = 3,
},
},
@@ -259,10 +259,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x10,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
- .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
- .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
- .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61000), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
.fs_len = 4,
},
[ST_LSM6DSX_ID_GYRO] = {
@@ -270,10 +270,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x11,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
- .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
- .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
- .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750000), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
.fs_len = 4,
},
},
@@ -425,10 +425,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x10,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
- .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
- .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
- .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61000), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
.fs_len = 4,
},
[ST_LSM6DSX_ID_GYRO] = {
@@ -436,10 +436,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x11,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
- .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
- .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
- .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750000), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
.fs_len = 4,
},
},
@@ -600,10 +600,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x10,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
- .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
- .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
- .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61000), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
.fs_len = 4,
},
[ST_LSM6DSX_ID_GYRO] = {
@@ -611,10 +611,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x11,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
- .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
- .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
- .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750000), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
.fs_len = 4,
},
},
@@ -816,10 +816,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x10,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
- .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
- .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
- .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61000), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
.fs_len = 4,
},
[ST_LSM6DSX_ID_GYRO] = {
@@ -827,10 +827,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x11,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
- .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
- .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
- .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750000), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
.fs_len = 4,
},
},
@@ -1021,10 +1021,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x10,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
- .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
- .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
- .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61000), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
.fs_len = 4,
},
[ST_LSM6DSX_ID_GYRO] = {
@@ -1032,10 +1032,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x11,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
- .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
- .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
- .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750000), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
.fs_len = 4,
},
},
@@ -1200,10 +1200,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x10,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_G_TO_M_S_2(61), 0x0 },
- .fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
- .fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
- .fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+ .fs_avl[0] = { IIO_G_TO_M_S_2(61000), 0x0 },
+ .fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+ .fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+ .fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
.fs_len = 4,
},
[ST_LSM6DSX_ID_GYRO] = {
@@ -1211,10 +1211,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x11,
.mask = GENMASK(3, 2),
},
- .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750), 0x0 },
- .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
- .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
- .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+ .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750000), 0x0 },
+ .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+ .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+ .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
.fs_len = 4,
},
},
@@ -1598,7 +1598,7 @@ static int st_lsm6dsx_read_raw(struct iio_dev *iio_dev,
case IIO_CHAN_INFO_SCALE:
*val = 0;
*val2 = sensor->gain;
- ret = IIO_VAL_INT_PLUS_MICRO;
+ ret = IIO_VAL_INT_PLUS_NANO;
break;
default:
ret = -EINVAL;
@@ -1836,13 +1836,31 @@ static ssize_t st_lsm6dsx_sysfs_scale_avail(struct device *dev,
fs_table = &hw->settings->fs_table[sensor->id];
for (i = 0; i < fs_table->fs_len; i++)
- len += scnprintf(buf + len, PAGE_SIZE - len, "0.%06u ",
+ len += scnprintf(buf + len, PAGE_SIZE - len, "0.%09u ",
fs_table->fs_avl[i].gain);
buf[len - 1] = '\n';
return len;
}
+static int st_lsm6dsx_write_raw_get_fmt(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ long mask)
+{
+ switch (mask) {
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_ANGL_VEL:
+ case IIO_ACCEL:
+ return IIO_VAL_INT_PLUS_NANO;
+ default:
+ return IIO_VAL_INT_PLUS_MICRO;
+ }
+ default:
+ return IIO_VAL_INT_PLUS_MICRO;
+ }
+}
+
static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(st_lsm6dsx_sysfs_sampling_frequency_avail);
static IIO_DEVICE_ATTR(in_accel_scale_available, 0444,
st_lsm6dsx_sysfs_scale_avail, NULL, 0);
@@ -1868,6 +1886,7 @@ static const struct iio_info st_lsm6dsx_acc_info = {
.read_event_config = st_lsm6dsx_read_event_config,
.write_event_config = st_lsm6dsx_write_event_config,
.hwfifo_set_watermark = st_lsm6dsx_set_watermark,
+ .write_raw_get_fmt = st_lsm6dsx_write_raw_get_fmt,
};
static struct attribute *st_lsm6dsx_gyro_attributes[] = {
@@ -1885,6 +1904,7 @@ static const struct iio_info st_lsm6dsx_gyro_info = {
.read_raw = st_lsm6dsx_read_raw,
.write_raw = st_lsm6dsx_write_raw,
.hwfifo_set_watermark = st_lsm6dsx_set_watermark,
+ .write_raw_get_fmt = st_lsm6dsx_write_raw_get_fmt,
};
static int st_lsm6dsx_get_drdy_pin(struct st_lsm6dsx_hw *hw, int *drdy_pin)