[PATCH v2 0/6] iio: accel: merge adis16203 into mainline adis16201 and remove from staging

[PATCH v2 0/6] iio: accel: merge adis16203 into mainline adis16201 and remove from staging

[Shehryar Ahmad]

This v2 series addresses review feedbacks on the previous attempt to
move ADIS16203 from staging into the mainline ADIS16201 driver [1].

Key changes from v1:
- Introduced adis16201_chip_info and adis16201_state infrastructure
- Added SPI and OF device ID tables with proper MODULE_DEVICE_TABLE
- Fixed adis_data stack lifetime issue in probe
- Fixed IIO_CHAN_SOFT_TIMESTAMP index collision in adis16203_channels

Patches 5 and 6 carry Reviewed-by tags from prior review.

[1] https://lore.kernel.org/all/20260831184201.34416-1-shehryar.amd@gmail.com/

Shehryar Ahmad (6):
  iio: accel: adis16201: add SPI device ID table
  iio: accel: adis16201: add OF device ID table
  iio: accel: adis16201: prepare driver to support additional parts
  iio: accel: adis16201: add ADIS16203 support
  staging: iio: accel: remove adis16203, merged into mainline adis16201
    driver
  dt-bindings: iio: accel: adi,adis16201: add adis16203 compatible

 .../bindings/iio/accel/adi,adis16201.yaml     |   6 +-
 drivers/iio/accel/Kconfig                     |   6 +-
 drivers/iio/accel/adis16201.c                 | 123 +++++--
 drivers/staging/iio/Kconfig                   |   1 -
 drivers/staging/iio/Makefile                  |   1 -
 drivers/staging/iio/accel/Kconfig             |  19 --
 drivers/staging/iio/accel/Makefile            |   6 -
 drivers/staging/iio/accel/adis16203.c         | 315 ------------------
 8 files changed, 106 insertions(+), 371 deletions(-)
 delete mode 100644 drivers/staging/iio/accel/Kconfig
 delete mode 100644 drivers/staging/iio/accel/Makefile
 delete mode 100644 drivers/staging/iio/accel/adis16203.c

-- 
2.43.0

[PATCH v2 1/6] iio: accel: adis16201: add SPI device ID table

[Shehryar Ahmad]

Add spi_device_id table for ADIS16201. Replace MODULE_ALIAS()
with MODULE_DEVICE_TABLE() which automatically generates the same
module alias.

Signed-off-by: Shehryar Ahmad <shehryar.amd@gmail.com>
---
 drivers/iio/accel/adis16201.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/accel/adis16201.c b/drivers/iio/accel/adis16201.c
index ba0f97944..1e76a3560 100644
--- a/drivers/iio/accel/adis16201.c
+++ b/drivers/iio/accel/adis16201.c
@@ -288,16 +288,23 @@ static int adis16201_probe(struct spi_device *spi)
 	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
+static const struct spi_device_id adis16201_ids[] = {
+	{ .name = "adis16201", 0 },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(spi, adis16201_ids);
+
 static struct spi_driver adis16201_driver = {
 	.driver = {
 		.name = "adis16201",
 	},
 	.probe = adis16201_probe,
+	.id_table = adis16201_ids,
 };
 module_spi_driver(adis16201_driver);
 
 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 MODULE_DESCRIPTION("Analog Devices ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer");
 MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:adis16201");
 MODULE_IMPORT_NS("IIO_ADISLIB");
-- 
2.43.0

[PATCH v2 2/6] iio: accel: adis16201: add OF device ID table

[Shehryar Ahmad]

Add of_device_id table for adis16201 and register it with
MODULE_DEVICE_TABLE() to enable device tree based matching.

Signed-off-by: Shehryar Ahmad <shehryar.amd@gmail.com>
---
 drivers/iio/accel/adis16201.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/iio/accel/adis16201.c b/drivers/iio/accel/adis16201.c
index 1e76a3560..2ce5c409b 100644
--- a/drivers/iio/accel/adis16201.c
+++ b/drivers/iio/accel/adis16201.c
@@ -288,6 +288,13 @@ static int adis16201_probe(struct spi_device *spi)
 	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
+static const struct of_device_id adis16201_of_match[] = {
+	{ .compatible = "adi,adis16201" },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(of, adis16201_of_match);
+
 static const struct spi_device_id adis16201_ids[] = {
 	{ .name = "adis16201", 0 },
 	{ },
@@ -298,6 +305,7 @@ MODULE_DEVICE_TABLE(spi, adis16201_ids);
 static struct spi_driver adis16201_driver = {
 	.driver = {
 		.name = "adis16201",
+		.of_match_table = adis16201_of_match,
 	},
 	.probe = adis16201_probe,
 	.id_table = adis16201_ids,
-- 
2.43.0

[PATCH v2 3/6] iio: accel: adis16201: prepare driver to support additional parts

[Shehryar Ahmad]

Introduce adis16201_chip_info to hold per chip data and adis16201_state
to wrap struct adis. Move adis16201 to this infrastructure. This
prepares the driver to support additional chip variants by keeping
chip-specific parameters in adis16201_chip_info. Additionally,
adis16201_write_raw applies mask directly on value.

Signed-off-by: Shehryar Ahmad <shehryar.amd@gmail.com>
---
 drivers/iio/accel/adis16201.c | 78 ++++++++++++++++++++++++-----------
 1 file changed, 55 insertions(+), 23 deletions(-)

diff --git a/drivers/iio/accel/adis16201.c b/drivers/iio/accel/adis16201.c
index 2ce5c409b..e0bf7df50 100644
--- a/drivers/iio/accel/adis16201.c
+++ b/drivers/iio/accel/adis16201.c
@@ -87,6 +87,22 @@ enum adis16201_scan {
 	ADIS16201_SCAN_TEMP,
 };
 
+struct adis16201_chip_info {
+	const char *name;
+	const struct iio_chan_spec *arr_channels;
+	unsigned int incli_scale_val2;
+	u16 write_mask_incli;
+	u16 diag_stat_mask;
+	unsigned int read_bits_incli;
+	unsigned int num_channels;
+};
+
+struct adis16201_state {
+	struct adis adis;
+	const struct adis16201_chip_info *info;
+	struct adis_data data;
+};
+
 static const u8 adis16201_addresses[] = {
 	[ADIS16201_SCAN_ACC_X] = ADIS16201_XACCL_OFFS_REG,
 	[ADIS16201_SCAN_ACC_Y] = ADIS16201_YACCL_OFFS_REG,
@@ -99,7 +115,7 @@ static int adis16201_read_raw(struct iio_dev *indio_dev,
 			      int *val, int *val2,
 			      long mask)
 {
-	struct adis *st = iio_priv(indio_dev);
+	struct adis16201_state *st = iio_priv(indio_dev);
 	int ret;
 	int bits;
 	u8 addr;
@@ -137,7 +153,7 @@ static int adis16201_read_raw(struct iio_dev *indio_dev,
 			return IIO_VAL_INT_PLUS_NANO;
 		case IIO_INCLI:
 			*val = 0;
-			*val2 = 100000;
+			*val2 = st->info->incli_scale_val2;
 			return IIO_VAL_INT_PLUS_MICRO;
 		default:
 			return -EINVAL;
@@ -157,13 +173,13 @@ static int adis16201_read_raw(struct iio_dev *indio_dev,
 			bits = 12;
 			break;
 		case IIO_INCLI:
-			bits = 9;
+			bits = st->info->read_bits_incli;
 			break;
 		default:
 			return -EINVAL;
 		}
 		addr = adis16201_addresses[chan->scan_index];
-		ret = adis_read_reg_16(st, addr, &val16);
+		ret = adis_read_reg_16(&st->adis, addr, &val16);
 		if (ret)
 			return ret;
 
@@ -180,25 +196,24 @@ static int adis16201_write_raw(struct iio_dev *indio_dev,
 			       int val2,
 			       long mask)
 {
-	struct adis *st = iio_priv(indio_dev);
-	int m;
+	struct adis16201_state *st = iio_priv(indio_dev);
 
 	if (mask != IIO_CHAN_INFO_CALIBBIAS)
 		return -EINVAL;
 
 	switch (chan->type) {
 	case IIO_ACCEL:
-		m = GENMASK(11, 0);
+		val &= GENMASK(11, 0);
 		break;
 	case IIO_INCLI:
-		m = GENMASK(8, 0);
+		val &= st->info->write_mask_incli;
 		break;
 	default:
 		return -EINVAL;
 	}
 
-	return adis_write_reg_16(st, adis16201_addresses[chan->scan_index],
-				 val & m);
+	return adis_write_reg_16(&st->adis, adis16201_addresses[chan->scan_index],
+				 val);
 }
 
 static const struct iio_chan_spec adis16201_channels[] = {
@@ -217,6 +232,20 @@ static const struct iio_chan_spec adis16201_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(7)
 };
 
+static const struct adis16201_chip_info adis16201_chip_data = {
+	.arr_channels = adis16201_channels,
+	.incli_scale_val2 = 100000,
+	.write_mask_incli = GENMASK(8, 0),
+	.diag_stat_mask =
+		BIT(ADIS16201_DIAG_STAT_SPI_FAIL_BIT) |
+		BIT(ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT) |
+		BIT(ADIS16201_DIAG_STAT_POWER_HIGH_BIT) |
+		BIT(ADIS16201_DIAG_STAT_POWER_LOW_BIT),
+	.read_bits_incli = 9,
+	.num_channels = ARRAY_SIZE(adis16201_channels),
+	.name = "adis16201",
+};
+
 static const struct iio_info adis16201_info = {
 	.read_raw = adis16201_read_raw,
 	.write_raw = adis16201_write_raw,
@@ -248,16 +277,12 @@ static const struct adis_data adis16201_data = {
 	.timeouts = &adis16201_timeouts,
 
 	.status_error_msgs = adis16201_status_error_msgs,
-	.status_error_mask = BIT(ADIS16201_DIAG_STAT_SPI_FAIL_BIT) |
-		BIT(ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT) |
-		BIT(ADIS16201_DIAG_STAT_POWER_HIGH_BIT) |
-		BIT(ADIS16201_DIAG_STAT_POWER_LOW_BIT),
 };
 
 static int adis16201_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
-	struct adis *st;
+	struct adis16201_state *st;
 	int ret;
 
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
@@ -266,22 +291,29 @@ static int adis16201_probe(struct spi_device *spi)
 
 	st = iio_priv(indio_dev);
 
-	indio_dev->name = spi->dev.driver->name;
+	st->info = spi_get_device_match_data(spi);
+	if (!st->info)
+		return -ENODATA;
+
+	indio_dev->name = st->info->name;
 	indio_dev->info = &adis16201_info;
 
-	indio_dev->channels = adis16201_channels;
-	indio_dev->num_channels = ARRAY_SIZE(adis16201_channels);
+	indio_dev->channels = st->info->arr_channels;
+	indio_dev->num_channels = st->info->num_channels;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = adis_init(st, indio_dev, spi, &adis16201_data);
+	st->data = adis16201_data;
+	st->data.status_error_mask = st->info->diag_stat_mask;
+
+	ret = adis_init(&st->adis, indio_dev, spi, &st->data);
 	if (ret)
 		return ret;
 
-	ret = devm_adis_setup_buffer_and_trigger(st, indio_dev, NULL);
+	ret = devm_adis_setup_buffer_and_trigger(&st->adis, indio_dev, NULL);
 	if (ret)
 		return ret;
 
-	ret = __adis_initial_startup(st);
+	ret = __adis_initial_startup(&st->adis);
 	if (ret)
 		return ret;
 
@@ -289,14 +321,14 @@ static int adis16201_probe(struct spi_device *spi)
 }
 
 static const struct of_device_id adis16201_of_match[] = {
-	{ .compatible = "adi,adis16201" },
+	{ .compatible = "adi,adis16201", .data = &adis16201_chip_data },
 	{ },
 };
 
 MODULE_DEVICE_TABLE(of, adis16201_of_match);
 
 static const struct spi_device_id adis16201_ids[] = {
-	{ .name = "adis16201", 0 },
+	{ .name = "adis16201", .driver_data = (kernel_ulong_t)&adis16201_chip_data },
 	{ },
 };
 
-- 
2.43.0

[PATCH v2 4/6] iio: accel: adis16201: add ADIS16203 support

[Shehryar Ahmad]

Add ADIS16203 from staging to mainline ADIS16201. ADIS16203 shares same
SPI protocol and register addresses. Differing parameters are handled by
adis16201_chip_info structure.

ADIS16203 specific support includes DIAG_STAT_SELFTEST_FAIL_BIT, which
is supported only on ADIS16203, and a separate channel array.

Kconfig is updated accordingly.

Signed-off-by: Shehryar Ahmad <shehryar.amd@gmail.com>
---
 drivers/iio/accel/Kconfig     |  6 +++---
 drivers/iio/accel/adis16201.c | 32 ++++++++++++++++++++++++++++++--
 2 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 4094299e2..f884ec66f 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -7,13 +7,13 @@
 menu "Accelerometers"
 
 config ADIS16201
-	tristate "Analog Devices ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer"
+	tristate "ADIS16201 Digital Inclinometer and similar"
 	depends on SPI
 	select IIO_ADIS_LIB
 	select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
 	help
-	  Say Y here to build support for Analog Devices adis16201 dual-axis
-	  digital inclinometer and accelerometer.
+	  Say Y here to build support for Analog Devices adis16201 Digital
+	  Inclinometer and similar
 
 	  To compile this driver as a module, say M here: the module will
 	  be called adis16201.
diff --git a/drivers/iio/accel/adis16201.c b/drivers/iio/accel/adis16201.c
index e0bf7df50..8e8e612fd 100644
--- a/drivers/iio/accel/adis16201.c
+++ b/drivers/iio/accel/adis16201.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer
+ * ADIS16201 Digital Inclinometer and similar
  *
  * Copyright 2010 Analog Devices Inc.
  */
@@ -63,6 +63,7 @@
 #define ADIS16201_DIAG_STAT_REG				0x3C
 #define  ADIS16201_DIAG_STAT_ALARM2			BIT(9)
 #define  ADIS16201_DIAG_STAT_ALARM1			BIT(8)
+#define ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT		5	/* ADIS16203 only */
 #define  ADIS16201_DIAG_STAT_SPI_FAIL_BIT		3
 #define  ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT		2
 /* Power supply above 3.625 V */
@@ -232,6 +233,15 @@ static const struct iio_chan_spec adis16201_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(7)
 };
 
+static const struct iio_chan_spec adis16203_channels[] = {
+	ADIS_SUPPLY_CHAN(ADIS16201_SUPPLY_OUT_REG, ADIS16201_SCAN_SUPPLY, 0, 12),
+	ADIS_TEMP_CHAN(ADIS16201_TEMP_OUT_REG, ADIS16201_SCAN_TEMP, 0, 12),
+	ADIS_AUX_ADC_CHAN(ADIS16201_AUX_ADC_REG, ADIS16201_SCAN_AUX_ADC, 0, 12),
+	ADIS_INCLI_CHAN(X, ADIS16201_XINCL_OUT_REG, ADIS16201_SCAN_INCLI_X,
+			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
+	IIO_CHAN_SOFT_TIMESTAMP(7),
+};
+
 static const struct adis16201_chip_info adis16201_chip_data = {
 	.arr_channels = adis16201_channels,
 	.incli_scale_val2 = 100000,
@@ -246,6 +256,21 @@ static const struct adis16201_chip_info adis16201_chip_data = {
 	.name = "adis16201",
 };
 
+static const struct adis16201_chip_info adis16203_chip_data = {
+	.arr_channels = adis16203_channels,
+	.incli_scale_val2 = 25000,
+	.write_mask_incli = GENMASK(13, 0),
+	.diag_stat_mask =
+		BIT(ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT) |
+		BIT(ADIS16201_DIAG_STAT_SPI_FAIL_BIT) |
+		BIT(ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT) |
+		BIT(ADIS16201_DIAG_STAT_POWER_HIGH_BIT) |
+		BIT(ADIS16201_DIAG_STAT_POWER_LOW_BIT),
+	.read_bits_incli = 14,
+	.num_channels = ARRAY_SIZE(adis16203_channels),
+	.name = "adis16203",
+};
+
 static const struct iio_info adis16201_info = {
 	.read_raw = adis16201_read_raw,
 	.write_raw = adis16201_write_raw,
@@ -253,6 +278,7 @@ static const struct iio_info adis16201_info = {
 };
 
 static const char * const adis16201_status_error_msgs[] = {
+	[ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT] = "Self test failure",
 	[ADIS16201_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
 	[ADIS16201_DIAG_STAT_FLASH_UPT_FAIL_BIT] = "Flash update failed",
 	[ADIS16201_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
@@ -322,6 +348,7 @@ static int adis16201_probe(struct spi_device *spi)
 
 static const struct of_device_id adis16201_of_match[] = {
 	{ .compatible = "adi,adis16201", .data = &adis16201_chip_data },
+	{ .compatible = "adi,adis16203", .data = &adis16203_chip_data },
 	{ },
 };
 
@@ -329,6 +356,7 @@ MODULE_DEVICE_TABLE(of, adis16201_of_match);
 
 static const struct spi_device_id adis16201_ids[] = {
 	{ .name = "adis16201", .driver_data = (kernel_ulong_t)&adis16201_chip_data },
+	{ .name = "adis16203", .driver_data = (kernel_ulong_t)&adis16203_chip_data },
 	{ },
 };
 
@@ -345,6 +373,6 @@ static struct spi_driver adis16201_driver = {
 module_spi_driver(adis16201_driver);
 
 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
-MODULE_DESCRIPTION("Analog Devices ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer");
+MODULE_DESCRIPTION("Analog Devices ADIS16201 Inclinometer and similar");
 MODULE_LICENSE("GPL v2");
 MODULE_IMPORT_NS("IIO_ADISLIB");
-- 
2.43.0

[PATCH v2 5/6] staging: iio: accel: remove adis16203, merged into mainline adis16201 driver

[Shehryar Ahmad]

The ADIS16203 is merged with mainline ADIS16201 in previous patch of
series, remove the staging copy and its build system entries.

Signed-off-by: Shehryar Ahmad <shehryar.amd@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
---
 drivers/staging/iio/Kconfig           |   1 -
 drivers/staging/iio/Makefile          |   1 -
 drivers/staging/iio/accel/Kconfig     |  19 --
 drivers/staging/iio/accel/Makefile    |   6 -
 drivers/staging/iio/accel/adis16203.c | 315 --------------------------
 5 files changed, 342 deletions(-)
 delete mode 100644 drivers/staging/iio/accel/Kconfig
 delete mode 100644 drivers/staging/iio/accel/Makefile
 delete mode 100644 drivers/staging/iio/accel/adis16203.c

diff --git a/drivers/staging/iio/Kconfig b/drivers/staging/iio/Kconfig
index a60631c1f..bf6addf29 100644
--- a/drivers/staging/iio/Kconfig
+++ b/drivers/staging/iio/Kconfig
@@ -5,7 +5,6 @@
 menu "IIO staging drivers"
 	depends on IIO
 
-source "drivers/staging/iio/accel/Kconfig"
 source "drivers/staging/iio/adc/Kconfig"
 source "drivers/staging/iio/addac/Kconfig"
 source "drivers/staging/iio/frequency/Kconfig"
diff --git a/drivers/staging/iio/Makefile b/drivers/staging/iio/Makefile
index 628583535..739e4cbf9 100644
--- a/drivers/staging/iio/Makefile
+++ b/drivers/staging/iio/Makefile
@@ -3,7 +3,6 @@
 # Makefile for the industrial I/O core.
 #
 
-obj-y += accel/
 obj-y += adc/
 obj-y += addac/
 obj-y += frequency/
diff --git a/drivers/staging/iio/accel/Kconfig b/drivers/staging/iio/accel/Kconfig
deleted file mode 100644
index cee51f64b..000000000
--- a/drivers/staging/iio/accel/Kconfig
+++ /dev/null
@@ -1,19 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Accelerometer drivers
-#
-menu "Accelerometers"
-
-config ADIS16203
-	tristate "Analog Devices ADIS16203 Programmable 360 Degrees Inclinometer"
-	depends on SPI
-	select IIO_ADIS_LIB
-	select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
-	help
-	  Say Y here to build support for Analog Devices adis16203 Programmable
-	  360 Degrees Inclinometer.
-
-	  To compile this driver as a module, say M here: the module will be
-	  called adis16203.
-
-endmenu
diff --git a/drivers/staging/iio/accel/Makefile b/drivers/staging/iio/accel/Makefile
deleted file mode 100644
index acac7bc9b..000000000
--- a/drivers/staging/iio/accel/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for industrial I/O accelerometer drivers
-#
-
-obj-$(CONFIG_ADIS16203) += adis16203.o
diff --git a/drivers/staging/iio/accel/adis16203.c b/drivers/staging/iio/accel/adis16203.c
deleted file mode 100644
index 830ff38fd..000000000
--- a/drivers/staging/iio/accel/adis16203.c
+++ /dev/null
@@ -1,315 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * ADIS16203 Programmable 360 Degrees Inclinometer
- *
- * Copyright 2010 Analog Devices Inc.
- */
-
-#include <linux/device.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/imu/adis.h>
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/spi/spi.h>
-
-#define ADIS16203_STARTUP_DELAY 220 /* ms */
-
-/* Flash memory write count */
-#define ADIS16203_FLASH_CNT      0x00
-
-/* Output, power supply */
-#define ADIS16203_SUPPLY_OUT     0x02
-
-/* Output, auxiliary ADC input */
-#define ADIS16203_AUX_ADC        0x08
-
-/* Output, temperature */
-#define ADIS16203_TEMP_OUT       0x0A
-
-/* Output, x-axis inclination */
-#define ADIS16203_XINCL_OUT      0x0C
-
-/* Output, y-axis inclination */
-#define ADIS16203_YINCL_OUT      0x0E
-
-/* Incline null calibration */
-#define ADIS16203_INCL_NULL      0x18
-
-/* Alarm 1 amplitude threshold */
-#define ADIS16203_ALM_MAG1       0x20
-
-/* Alarm 2 amplitude threshold */
-#define ADIS16203_ALM_MAG2       0x22
-
-/* Alarm 1, sample period */
-#define ADIS16203_ALM_SMPL1      0x24
-
-/* Alarm 2, sample period */
-#define ADIS16203_ALM_SMPL2      0x26
-
-/* Alarm control */
-#define ADIS16203_ALM_CTRL       0x28
-
-/* Auxiliary DAC data */
-#define ADIS16203_AUX_DAC        0x30
-
-/* General-purpose digital input/output control */
-#define ADIS16203_GPIO_CTRL      0x32
-
-/* Miscellaneous control */
-#define ADIS16203_MSC_CTRL       0x34
-
-/* Internal sample period (rate) control */
-#define ADIS16203_SMPL_PRD       0x36
-
-/* Operation, filter configuration */
-#define ADIS16203_AVG_CNT        0x38
-
-/* Operation, sleep mode control */
-#define ADIS16203_SLP_CNT        0x3A
-
-/* Diagnostics, system status register */
-#define ADIS16203_DIAG_STAT      0x3C
-
-/* Operation, system command register */
-#define ADIS16203_GLOB_CMD       0x3E
-
-/* MSC_CTRL */
-
-/* Self-test at power-on: 1 = disabled, 0 = enabled */
-#define ADIS16203_MSC_CTRL_PWRUP_SELF_TEST      BIT(10)
-
-/* Reverses rotation of both inclination outputs */
-#define ADIS16203_MSC_CTRL_REVERSE_ROT_EN       BIT(9)
-
-/* Self-test enable */
-#define ADIS16203_MSC_CTRL_SELF_TEST_EN         BIT(8)
-
-/* Data-ready enable: 1 = enabled, 0 = disabled */
-#define ADIS16203_MSC_CTRL_DATA_RDY_EN          BIT(2)
-
-/* Data-ready polarity: 1 = active high, 0 = active low */
-#define ADIS16203_MSC_CTRL_ACTIVE_HIGH          BIT(1)
-
-/* Data-ready line selection: 1 = DIO1, 0 = DIO0 */
-#define ADIS16203_MSC_CTRL_DATA_RDY_DIO1        BIT(0)
-
-/* DIAG_STAT */
-
-/* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
-#define ADIS16203_DIAG_STAT_ALARM2        BIT(9)
-
-/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
-#define ADIS16203_DIAG_STAT_ALARM1        BIT(8)
-
-/* Self-test diagnostic error flag */
-#define ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT 5
-
-/* SPI communications failure */
-#define ADIS16203_DIAG_STAT_SPI_FAIL_BIT      3
-
-/* Flash update failure */
-#define ADIS16203_DIAG_STAT_FLASH_UPT_BIT     2
-
-/* Power supply above 3.625 V */
-#define ADIS16203_DIAG_STAT_POWER_HIGH_BIT    1
-
-/* Power supply below 2.975 V */
-#define ADIS16203_DIAG_STAT_POWER_LOW_BIT     0
-
-/* GLOB_CMD */
-
-#define ADIS16203_GLOB_CMD_SW_RESET     BIT(7)
-#define ADIS16203_GLOB_CMD_CLEAR_STAT   BIT(4)
-#define ADIS16203_GLOB_CMD_FACTORY_CAL  BIT(1)
-
-#define ADIS16203_ERROR_ACTIVE          BIT(14)
-
-enum adis16203_scan {
-	 ADIS16203_SCAN_INCLI_X,
-	 ADIS16203_SCAN_INCLI_Y,
-	 ADIS16203_SCAN_SUPPLY,
-	 ADIS16203_SCAN_AUX_ADC,
-	 ADIS16203_SCAN_TEMP,
-};
-
-#define DRIVER_NAME		"adis16203"
-
-static const u8 adis16203_addresses[] = {
-	[ADIS16203_SCAN_INCLI_X] = ADIS16203_INCL_NULL,
-};
-
-static int adis16203_write_raw(struct iio_dev *indio_dev,
-			       struct iio_chan_spec const *chan,
-			       int val,
-			       int val2,
-			       long mask)
-{
-	struct adis *st = iio_priv(indio_dev);
-	/* currently only one writable parameter which keeps this simple */
-	u8 addr = adis16203_addresses[chan->scan_index];
-
-	return adis_write_reg_16(st, addr, val & 0x3FFF);
-}
-
-static int adis16203_read_raw(struct iio_dev *indio_dev,
-			      struct iio_chan_spec const *chan,
-			      int *val, int *val2,
-			      long mask)
-{
-	struct adis *st = iio_priv(indio_dev);
-	int ret;
-	u8 addr;
-	s16 val16;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_RAW:
-		return adis_single_conversion(indio_dev, chan,
-				ADIS16203_ERROR_ACTIVE, val);
-	case IIO_CHAN_INFO_SCALE:
-		switch (chan->type) {
-		case IIO_VOLTAGE:
-			if (chan->channel == 0) {
-				*val = 1;
-				*val2 = 220000; /* 1.22 mV */
-			} else {
-				*val = 0;
-				*val2 = 610000; /* 0.61 mV */
-			}
-			return IIO_VAL_INT_PLUS_MICRO;
-		case IIO_TEMP:
-			*val = -470; /* -0.47 C */
-			*val2 = 0;
-			return IIO_VAL_INT_PLUS_MICRO;
-		case IIO_INCLI:
-			*val = 0;
-			*val2 = 25000; /* 0.025 degree */
-			return IIO_VAL_INT_PLUS_MICRO;
-		default:
-			return -EINVAL;
-		}
-	case IIO_CHAN_INFO_OFFSET:
-		*val = 25000 / -470 - 1278; /* 25 C = 1278 */
-		return IIO_VAL_INT;
-	case IIO_CHAN_INFO_CALIBBIAS:
-		addr = adis16203_addresses[chan->scan_index];
-		ret = adis_read_reg_16(st, addr, &val16);
-		if (ret)
-			return ret;
-		*val = sign_extend32(val16, 13);
-		return IIO_VAL_INT;
-	default:
-		return -EINVAL;
-	}
-}
-
-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,
-			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),
-};
-
-static const struct iio_info adis16203_info = {
-	.read_raw = adis16203_read_raw,
-	.write_raw = adis16203_write_raw,
-	.update_scan_mode = adis_update_scan_mode,
-};
-
-static const char * const adis16203_status_error_msgs[] = {
-	[ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT] = "Self test failure",
-	[ADIS16203_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
-	[ADIS16203_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
-	[ADIS16203_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
-	[ADIS16203_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 2.975V",
-};
-
-static const struct adis_timeout adis16203_timeouts = {
-	.reset_ms = ADIS16203_STARTUP_DELAY,
-	.sw_reset_ms = ADIS16203_STARTUP_DELAY,
-	.self_test_ms = ADIS16203_STARTUP_DELAY
-};
-
-static const struct adis_data adis16203_data = {
-	.read_delay = 20,
-	.msc_ctrl_reg = ADIS16203_MSC_CTRL,
-	.glob_cmd_reg = ADIS16203_GLOB_CMD,
-	.diag_stat_reg = ADIS16203_DIAG_STAT,
-
-	.self_test_mask = ADIS16203_MSC_CTRL_SELF_TEST_EN,
-	.self_test_reg = ADIS16203_MSC_CTRL,
-	.self_test_no_autoclear = true,
-	.timeouts = &adis16203_timeouts,
-
-	.status_error_msgs = adis16203_status_error_msgs,
-	.status_error_mask = BIT(ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT) |
-		BIT(ADIS16203_DIAG_STAT_SPI_FAIL_BIT) |
-		BIT(ADIS16203_DIAG_STAT_FLASH_UPT_BIT) |
-		BIT(ADIS16203_DIAG_STAT_POWER_HIGH_BIT) |
-		BIT(ADIS16203_DIAG_STAT_POWER_LOW_BIT),
-};
-
-static int adis16203_probe(struct spi_device *spi)
-{
-	int ret;
-	struct iio_dev *indio_dev;
-	struct adis *st;
-
-	/* setup the industrialio driver allocated elements */
-	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
-	if (!indio_dev)
-		return -ENOMEM;
-	st = iio_priv(indio_dev);
-	/* this is only used for removal purposes */
-	spi_set_drvdata(spi, indio_dev);
-
-	indio_dev->name = spi->dev.driver->name;
-	indio_dev->channels = adis16203_channels;
-	indio_dev->num_channels = ARRAY_SIZE(adis16203_channels);
-	indio_dev->info = &adis16203_info;
-	indio_dev->modes = INDIO_DIRECT_MODE;
-
-	ret = adis_init(st, indio_dev, spi, &adis16203_data);
-	if (ret)
-		return ret;
-
-	ret = devm_adis_setup_buffer_and_trigger(st, indio_dev, NULL);
-	if (ret)
-		return ret;
-
-	/* Get the device into a sane initial state */
-	ret = __adis_initial_startup(st);
-	if (ret)
-		return ret;
-
-	return devm_iio_device_register(&spi->dev, indio_dev);
-}
-
-static const struct of_device_id adis16203_of_match[] = {
-	{ .compatible = "adi,adis16203" },
-	{ }
-};
-
-MODULE_DEVICE_TABLE(of, adis16203_of_match);
-
-static struct spi_driver adis16203_driver = {
-	.driver = {
-		.name = "adis16203",
-		.of_match_table = adis16203_of_match,
-	},
-	.probe = adis16203_probe,
-};
-module_spi_driver(adis16203_driver);
-
-MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
-MODULE_DESCRIPTION("Analog Devices ADIS16203 Programmable 360 Degrees Inclinometer");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:adis16203");
-MODULE_IMPORT_NS("IIO_ADISLIB");
-- 
2.43.0

[PATCH v2 6/6] dt-bindings: iio: accel: adi,adis16201: add adis16203 compatible

[Shehryar Ahmad]

The ADIS16203 has the same external interface as the already documented
ADIS16201/ADIS16209, for the properties covered by this binding
(compatible/reg, the DIO-based interrupt pin, and VDD supply), verified
by datasheets Table 5, Pin Function Descriptions, in the respective
Analog Devices datasheets. Some Auxiliary pins differ (e.g. adis16209
marks a few pins DNC where adis16201/adis16203 use them as AUX COM), but
these are not represented in this binding.  Add adis16203 to the
existing enum rather than creating a separate file.

Signed-off-by: Shehryar Ahmad <shehryar.amd@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
---
 .../devicetree/bindings/iio/accel/adi,adis16201.yaml        | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml
index b6ba7ad1a..3ce5fb1be 100644
--- a/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml
+++ b/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml
@@ -4,21 +4,23 @@
 $id: http://devicetree.org/schemas/iio/accel/adi,adis16201.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: ADIS16201 Dual Axis Inclinometer and similar
+title: ADIS16201 Inclinometer and similar
 
 maintainers:
   - Jonathan Cameron <Jonathan.Cameron@huawei.com>
 
 description: |
-  Two similar parts from external interface point of view.
+  Three similar parts from external interface point of view.
   SPI interface.
     https://www.analog.com/en/products/adis16201.html
+    https://www.analog.com/en/products/adis16203.html
     https://www.analog.com/en/products/adis16209.html
 
 properties:
   compatible:
     enum:
       - adi,adis16201
+      - adi,adis16203
       - adi,adis16209
 
   reg:
-- 
2.43.0