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path: root/drivers/iio/imu/adis16480.c
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Diffstat (limited to 'drivers/iio/imu/adis16480.c')
-rw-r--r--drivers/iio/imu/adis16480.c77
1 files changed, 41 insertions, 36 deletions
diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
index c0e7e768be41..f1d52563951c 100644
--- a/drivers/iio/imu/adis16480.c
+++ b/drivers/iio/imu/adis16480.c
@@ -622,9 +622,13 @@ static int adis16480_read_raw(struct iio_dev *indio_dev,
*val2 = (st->chip_info->temp_scale % 1000) * 1000;
return IIO_VAL_INT_PLUS_MICRO;
case IIO_PRESSURE:
- *val = 0;
- *val2 = 4000; /* 40ubar = 0.004 kPa */
- return IIO_VAL_INT_PLUS_MICRO;
+ /*
+ * max scale is 1310 mbar
+ * max raw value is 32767 shifted for 32bits
+ */
+ *val = 131; /* 1310mbar = 131 kPa */
+ *val2 = 32767 << 16;
+ return IIO_VAL_FRACTIONAL;
default:
return -EINVAL;
}
@@ -785,13 +789,14 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
/*
- * storing the value in rad/degree and the scale in degree
- * gives us the result in rad and better precession than
- * storing the scale directly in rad.
+ * Typically we do IIO_RAD_TO_DEGREE in the denominator, which
+ * is exactly the same as IIO_DEGREE_TO_RAD in numerator, since
+ * it gives better approximation. However, in this case we
+ * cannot do it since it would not fit in a 32bit variable.
*/
- .gyro_max_val = IIO_RAD_TO_DEGREE(22887),
- .gyro_max_scale = 300,
- .accel_max_val = IIO_M_S_2_TO_G(21973),
+ .gyro_max_val = 22887 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(300),
+ .accel_max_val = IIO_M_S_2_TO_G(21973 << 16),
.accel_max_scale = 18,
.temp_scale = 5650, /* 5.65 milli degree Celsius */
.int_clk = 2460000,
@@ -801,9 +806,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16480] = {
.channels = adis16480_channels,
.num_channels = ARRAY_SIZE(adis16480_channels),
- .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
- .gyro_max_scale = 450,
- .accel_max_val = IIO_M_S_2_TO_G(12500),
+ .gyro_max_val = 22500 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(450),
+ .accel_max_val = IIO_M_S_2_TO_G(12500 << 16),
.accel_max_scale = 10,
.temp_scale = 5650, /* 5.65 milli degree Celsius */
.int_clk = 2460000,
@@ -813,9 +818,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16485] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
- .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
- .gyro_max_scale = 450,
- .accel_max_val = IIO_M_S_2_TO_G(20000),
+ .gyro_max_val = 22500 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(450),
+ .accel_max_val = IIO_M_S_2_TO_G(20000 << 16),
.accel_max_scale = 5,
.temp_scale = 5650, /* 5.65 milli degree Celsius */
.int_clk = 2460000,
@@ -825,9 +830,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16488] = {
.channels = adis16480_channels,
.num_channels = ARRAY_SIZE(adis16480_channels),
- .gyro_max_val = IIO_RAD_TO_DEGREE(22500),
- .gyro_max_scale = 450,
- .accel_max_val = IIO_M_S_2_TO_G(22500),
+ .gyro_max_val = 22500 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(450),
+ .accel_max_val = IIO_M_S_2_TO_G(22500 << 16),
.accel_max_scale = 18,
.temp_scale = 5650, /* 5.65 milli degree Celsius */
.int_clk = 2460000,
@@ -837,9 +842,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16495_1] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
- .gyro_max_val = IIO_RAD_TO_DEGREE(20000),
- .gyro_max_scale = 125,
- .accel_max_val = IIO_M_S_2_TO_G(32000),
+ .gyro_max_val = 20000 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(125),
+ .accel_max_val = IIO_M_S_2_TO_G(32000 << 16),
.accel_max_scale = 8,
.temp_scale = 12500, /* 12.5 milli degree Celsius */
.int_clk = 4250000,
@@ -850,9 +855,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16495_2] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
- .gyro_max_val = IIO_RAD_TO_DEGREE(18000),
- .gyro_max_scale = 450,
- .accel_max_val = IIO_M_S_2_TO_G(32000),
+ .gyro_max_val = 18000 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(450),
+ .accel_max_val = IIO_M_S_2_TO_G(32000 << 16),
.accel_max_scale = 8,
.temp_scale = 12500, /* 12.5 milli degree Celsius */
.int_clk = 4250000,
@@ -863,9 +868,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16495_3] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
- .gyro_max_val = IIO_RAD_TO_DEGREE(20000),
- .gyro_max_scale = 2000,
- .accel_max_val = IIO_M_S_2_TO_G(32000),
+ .gyro_max_val = 20000 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(2000),
+ .accel_max_val = IIO_M_S_2_TO_G(32000 << 16),
.accel_max_scale = 8,
.temp_scale = 12500, /* 12.5 milli degree Celsius */
.int_clk = 4250000,
@@ -876,9 +881,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16497_1] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
- .gyro_max_val = IIO_RAD_TO_DEGREE(20000),
- .gyro_max_scale = 125,
- .accel_max_val = IIO_M_S_2_TO_G(32000),
+ .gyro_max_val = 20000 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(125),
+ .accel_max_val = IIO_M_S_2_TO_G(32000 << 16),
.accel_max_scale = 40,
.temp_scale = 12500, /* 12.5 milli degree Celsius */
.int_clk = 4250000,
@@ -889,9 +894,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16497_2] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
- .gyro_max_val = IIO_RAD_TO_DEGREE(18000),
- .gyro_max_scale = 450,
- .accel_max_val = IIO_M_S_2_TO_G(32000),
+ .gyro_max_val = 18000 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(450),
+ .accel_max_val = IIO_M_S_2_TO_G(32000 << 16),
.accel_max_scale = 40,
.temp_scale = 12500, /* 12.5 milli degree Celsius */
.int_clk = 4250000,
@@ -902,9 +907,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16497_3] = {
.channels = adis16485_channels,
.num_channels = ARRAY_SIZE(adis16485_channels),
- .gyro_max_val = IIO_RAD_TO_DEGREE(20000),
- .gyro_max_scale = 2000,
- .accel_max_val = IIO_M_S_2_TO_G(32000),
+ .gyro_max_val = 20000 << 16,
+ .gyro_max_scale = IIO_DEGREE_TO_RAD(2000),
+ .accel_max_val = IIO_M_S_2_TO_G(32000 << 16),
.accel_max_scale = 40,
.temp_scale = 12500, /* 12.5 milli degree Celsius */
.int_clk = 4250000,
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-28 11:38:10 +0000