drivers: imu: adis16475.c: Remove scan index from delta channels

Some devices do not support delta angle and delta velocity
burst readings, which means there should be no buffer support
for these types of channels.
A new list of channels is created which contains the delta
channels structures with the scan index equal to -1 to allow
for raw register readings, without buffer support.
This list of channels is assigned to the devices which
do not support delta angle and delta velocity burst
readings.

Fixes: 8f6bc87d67c0 ("iio: imu: adis16475.c: Add delta angle and delta velocity channels")
Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20231012122456.765709-2-ramona.gradinariu@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

1 files changed, 46 insertions, 21 deletions

diff --git a/drivers/iio/imu/adis16475.c b/drivers/iio/imu/adis16475.c
index 9af07fec0d89..b7cbe1565aee 100644
--- a/drivers/iio/imu/adis16475.c
+++ b/drivers/iio/imu/adis16475.c
@@ -604,7 +604,15 @@ static int adis16475_write_raw(struct iio_dev *indio_dev,
 	ADIS16475_MOD_CHAN_DELTA(IIO_DELTA_VELOCITY, IIO_MOD_ ## _mod, \
 			   ADIS16475_REG_ ## _mod ## _DELTVEL_L, ADIS16475_SCAN_DELTVEL_ ## _mod, 32, 32)
 
-static const struct iio_chan_spec adis16475_channels[] = {
+#define ADIS16475_DELTANG_CHAN_NO_SCAN(_mod) \
+	ADIS16475_MOD_CHAN_DELTA(IIO_DELTA_ANGL, IIO_MOD_ ## _mod, \
+			   ADIS16475_REG_ ## _mod ## _DELTANG_L, -1, 32, 32)
+
+#define ADIS16475_DELTVEL_CHAN_NO_SCAN(_mod) \
+	ADIS16475_MOD_CHAN_DELTA(IIO_DELTA_VELOCITY, IIO_MOD_ ## _mod, \
+			   ADIS16475_REG_ ## _mod ## _DELTVEL_L, -1, 32, 32)
+
+static const struct iio_chan_spec adis16477_channels[] = {
 	ADIS16475_GYRO_CHANNEL(X),
 	ADIS16475_GYRO_CHANNEL(Y),
 	ADIS16475_GYRO_CHANNEL(Z),
@@ -621,6 +629,23 @@ static const struct iio_chan_spec adis16475_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(13)
 };
 
+static const struct iio_chan_spec adis16475_channels[] = {
+	ADIS16475_GYRO_CHANNEL(X),
+	ADIS16475_GYRO_CHANNEL(Y),
+	ADIS16475_GYRO_CHANNEL(Z),
+	ADIS16475_ACCEL_CHANNEL(X),
+	ADIS16475_ACCEL_CHANNEL(Y),
+	ADIS16475_ACCEL_CHANNEL(Z),
+	ADIS16475_TEMP_CHANNEL(),
+	ADIS16475_DELTANG_CHAN_NO_SCAN(X),
+	ADIS16475_DELTANG_CHAN_NO_SCAN(Y),
+	ADIS16475_DELTANG_CHAN_NO_SCAN(Z),
+	ADIS16475_DELTVEL_CHAN_NO_SCAN(X),
+	ADIS16475_DELTVEL_CHAN_NO_SCAN(Y),
+	ADIS16475_DELTVEL_CHAN_NO_SCAN(Z),
+	IIO_CHAN_SOFT_TIMESTAMP(7)
+};
+
 enum adis16475_variant {
 	ADIS16470,
 	ADIS16475_1,
@@ -782,8 +807,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16477_1] = {
 		.name = "adis16477-1",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
 		.accel_max_val = 1,
@@ -800,8 +825,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16477_2] = {
 		.name = "adis16477-2",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
 		.accel_max_val = 1,
@@ -818,8 +843,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16477_3] = {
 		.name = "adis16477-3",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
 		.accel_max_val = 1,
@@ -938,8 +963,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16500] = {
 		.name = "adis16500",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
 		.accel_max_val = 392,
@@ -957,8 +982,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16505_1] = {
 		.name = "adis16505-1",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
 		.accel_max_val = 78,
@@ -976,8 +1001,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16505_2] = {
 		.name = "adis16505-2",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
 		.accel_max_val = 78,
@@ -995,8 +1020,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16505_3] = {
 		.name = "adis16505-3",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
 		.accel_max_val = 78,
@@ -1014,8 +1039,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16507_1] = {
 		.name = "adis16507-1",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
 		.accel_max_val = 392,
@@ -1033,8 +1058,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16507_2] = {
 		.name = "adis16507-2",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
 		.accel_max_val = 392,
@@ -1052,8 +1077,8 @@ static const struct adis16475_chip_info adis16475_chip_info[] = {
 	},
 	[ADIS16507_3] = {
 		.name = "adis16507-3",
-		.num_channels = ARRAY_SIZE(adis16475_channels),
-		.channels = adis16475_channels,
+		.num_channels = ARRAY_SIZE(adis16477_channels),
+		.channels = adis16477_channels,
 		.gyro_max_val = 1,
 		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
 		.accel_max_val = 392,