[PATCH 1/3] staging: iio: accel: adis16203: fix inclination naming and remove unsupported Y-axis

[Abdelnasser Hussein <abdelnasserhussein11@gmail.com>]

The ADIS16203 measures inclination around a single axis. As per the
datasheet, register 0x0C gives a 360-degree output, and 0x0E gives a
+/- 180-degree output of the exact same measurement.

The current driver incorrectly maps 0x0E as a separate Y-axis. This patch
removes the phantom Y-axis, updates the naming, and adjusts the timestamp
channel index.

Note: The ADIS_INCLI_CHAN(X, ...) modifier is intentionally kept to
preserve the existing userspace ABI (incli_x_raw). Furthermore, removing
the phantom Y-axis inherently shifts the scan indexes of subsequent
channels down by one, which is expected to correct the hardware
representation.

Fixes: 2df79e1bddc4 ("staging: iio: accel: Rename source files and update Makefile")
Signed-off-by: Abdelnasser Hussein <abdelnasserhussein11@gmail.com>
---
 drivers/staging/iio/accel/adis16203.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/iio/accel/adis16203.c b/drivers/staging/iio/accel/adis16203.c
index 830ff38fda92..eddb786d4747 100644
--- a/drivers/staging/iio/accel/adis16203.c
+++ b/drivers/staging/iio/accel/adis16203.c
@@ -29,10 +29,7 @@
 #define ADIS16203_TEMP_OUT       0x0A
 
 /* Output, x-axis inclination */
-#define ADIS16203_XINCL_OUT      0x0C
-
-/* Output, y-axis inclination */
-#define ADIS16203_YINCL_OUT      0x0E
+#define ADIS16203_INCL_OUT       0x0C
 
 /* Incline null calibration */
 #define ADIS16203_INCL_NULL      0x18
@@ -129,7 +126,6 @@
 
 enum adis16203_scan {
 	 ADIS16203_SCAN_INCLI_X,
-	 ADIS16203_SCAN_INCLI_Y,
 	 ADIS16203_SCAN_SUPPLY,
 	 ADIS16203_SCAN_AUX_ADC,
 	 ADIS16203_SCAN_TEMP,
@@ -208,13 +204,10 @@ static int adis16203_read_raw(struct iio_dev *indio_dev,
 static const struct iio_chan_spec adis16203_channels[] = {
 	ADIS_SUPPLY_CHAN(ADIS16203_SUPPLY_OUT, ADIS16203_SCAN_SUPPLY, 0, 12),
 	ADIS_AUX_ADC_CHAN(ADIS16203_AUX_ADC, ADIS16203_SCAN_AUX_ADC, 0, 12),
-	ADIS_INCLI_CHAN(X, ADIS16203_XINCL_OUT, ADIS16203_SCAN_INCLI_X,
+	ADIS_INCLI_CHAN(X, ADIS16203_INCL_OUT, ADIS16203_SCAN_INCLI_X,
 			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
-	/* Fixme: Not what it appears to be - see data sheet */
-	ADIS_INCLI_CHAN(Y, ADIS16203_YINCL_OUT, ADIS16203_SCAN_INCLI_Y,
-			0, 0, 14),
 	ADIS_TEMP_CHAN(ADIS16203_TEMP_OUT, ADIS16203_SCAN_TEMP, 0, 12),
-	IIO_CHAN_SOFT_TIMESTAMP(5),
+	IIO_CHAN_SOFT_TIMESTAMP(4),
 };
 
 static const struct iio_info adis16203_info = {
-- 
2.54.0