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Author SHA1 Message Date
Javier Carrasco
081c74203a iio: light: veml6030: use dev_err_probe() 
Use the more convenient dev_err_probe() to get rid of the dev_err() +
return sequence in the probe error paths.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20241001-veml6035-v3-2-d789f6ff147c@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 15:09:35 +01:00
Javier Carrasco
c61d687cd5 iio: light: veml6030: add set up delay after any power on sequence 
The veml6030 requires a delay of 4 ms after activating the sensor. That
is done correctly during the hw initialization, but it's missing after
resuming.

Move the delay to the power on function to make sure that it is always
observerd. When at it, use fsleep() instead of usleep_range() as such a
narrow range is not required.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20241001-veml6035-v3-1-d789f6ff147c@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 15:09:35 +01:00
Vasileios Amoiridis
1960713218 iio: pressure: bmp280: Use char instead of s32 for data buffer 
As it was reported and discussed here [1], storing the sensor data in an
endian aware s32 buffer is not optimal. Advertising the timestamp as an
addition of 2 s32 variables which is also implied is again not the best
practice. For that reason, change the s32 sensor_data buffer to a u8
buffer and align it properly.

[1]: https://lore.kernel.org/linux-iio/73d13cc0-afb9-4306-b498-5d821728c3ba@stanley.mountain/

Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com>
Link: https://patch.msgid.link/20240930202353.38203-3-vassilisamir@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 15:04:44 +01:00
Vasileios Amoiridis
8b13937b5e iio: pressure: bmp280: Use unsigned type for raw values 
The adc values coming directly from the sensor in the BM{E,P}{2,3}xx
sensors are unsigned values so treat them as such.

Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com>
Link: https://patch.msgid.link/20240930202353.38203-2-vassilisamir@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 15:04:44 +01:00
Angelo Dureghello
d1d1c117f3 dt-bindings: iio: dac: ad3552r: fix maximum spi speed 
Fix maximum SPI clock speed, as per datasheet (Rev. B, page 6).

Fixes: b0a96c5f59 ("dt-bindings: iio: dac: Add adi,ad3552r.yaml")
Cc: stable@vger.kernel.org
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20241003-wip-bl-ad3552r-axi-v0-iio-testing-v4-4-ceb157487329@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 14:42:19 +01:00
Jean-Baptiste Maneyrol
ed9c5820ab MAINTAINERS: iio: imu: add entry for InvenSense MPU-6050 driver 
Add entry for inv_mpu6050 iio driver supporting InvenSense MPU-6xxx
and ICM-206xxx devices.

Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://patch.msgid.link/20241003-invn-maintainers-email-update-v2-3-ca5a4928eb22@tdk.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 14:36:47 +01:00
Jean-Baptiste Maneyrol
41f3a1067c dt-bindings: iio: imu: migrate InvenSense email to TDK group domain 
Migrate maintainer email to TDK domain.

Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20241003-invn-maintainers-email-update-v2-2-ca5a4928eb22@tdk.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 14:36:47 +01:00
Jean-Baptiste Maneyrol
bcafd2e25a MAINTAINERS: iio: migrate invensense email address to tdk domain 
InvenSense is part of TDK group. Update email address to use the
TDK domain.

Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://patch.msgid.link/20241003-invn-maintainers-email-update-v2-1-ca5a4928eb22@tdk.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 14:36:46 +01:00
Herve Codina
791f9e92d2 MAINTAINERS: add the GE HealthCare PMC ADC driver entry 
After contributing the driver, add myself as the maintainer for the
GE HealthCare PCM ADC IIO driver.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Tested-by: Ian Ray <ian.ray@gehealthcare.com>
Link: https://patch.msgid.link/20241003114641.672086-5-herve.codina@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 14:02:09 +01:00
Herve Codina
fb45972c18 iio: adc: Add support for the GE HealthCare PMC ADC 
The GE HealthCare PMC Analog to Digital Converter (ADC) is a 16-Channel
(voltage and current), 16-Bit ADC with an I2C Interface.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Tested-by: Ian Ray <ian.ray@gehealthcare.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241003114641.672086-4-herve.codina@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 14:00:15 +01:00
Herve Codina
421d2251fb dt-bindings: iio: adc: Add the GE HealthCare PMC ADC 
The GE HealthCare PMC Analog to Digital Converter (ADC) is a 16-Channel
(voltage and current), 16-Bit ADC with an I2C Interface.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Tested-by: Ian Ray <ian.ray@gehealthcare.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20241003114641.672086-3-herve.codina@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 13:48:54 +01:00
Herve Codina
5e472eaa8d dt-bindings: vendor-prefixes: Add an entry for GE HealthCare 
Add the "gehc" entry for GE HealthCare.
https://www.gehealthcare.com

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Ian Ray <ian.ray@gehealthcare.com>
Link: https://patch.msgid.link/20241003114641.672086-2-herve.codina@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 13:48:54 +01:00
Ivin Joel Abraham
ee8caf4254 docs: iio: fix grammatical error 
Clarify the instruction for disabling autocalibration by adding the word
"by"

Signed-off-by: Ivin Joel Abraham <ivinjabraham@gmail.com>
Link: https://patch.msgid.link/20241002100341.110435-1-ivinjabraham@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 12:43:31 +01:00
Guillaume Stols
1276d269fe iio: adc: ad7606: Sort includes in alphabetical order 
Some of the includes were not in alphabetical order, this commit fixes
it.

Signed-off-by: Guillaume Stols <gstols@baylibre.com>
Link: https://patch.msgid.link/20241004-ad7606_add_iio_backend_support-v3-5-38757012ce82@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:25:21 +01:00
Guillaume Stols
afdc595666 iio: adc: ad7606: Fix typo in the driver name 
The parallel driver's name is ad7606_par and not ad7606_parallel.

Fixes: 0046a46a8f ("staging/ad7606: Actually build the interface modules")
Signed-off-by: Guillaume Stols <gstols@baylibre.com>
Link: https://patch.msgid.link/20241004-ad7606_add_iio_backend_support-v3-1-38757012ce82@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:21:02 +01:00
Bjorn Andersson
0d8f584dfa iio: adc: qcom-spmi-adc5: Tidy up adc5_get_fw_data() error messages 
In the event that no channels (child nodes) are defined, the adc5 driver
will provide a generic error message indicating that adc5_get_fw_data()
returned -EINVAL. In all other error cases we get two error messages,
one helpful and the generic one.

Add a specific error message for the no channels case, and drop the
generic one, in order to improve the generates log prints in both cases.

Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
Link: https://patch.msgid.link/20241004-spmi-adc5-no-channel-error-v1-1-1a43d13ae967@oss.qualcomm.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:19:01 +01:00
Matteo Martelli
a9bb0610b2 iio: pac1921: remove unnecessary explicit casts 
Many explicit casts were introduced to address Wconversion and
Wsign-compare warnings. Remove them to improve readability.

Link: https://lore.kernel.org/linux-iio/1fa4ab12-0939-477d-bc92-306fd32e4fd9@stanley.mountain/
Signed-off-by: Matteo Martelli <matteomartelli3@gmail.com>
Link: https://patch.msgid.link/20240930-iio-pac1921-nocast-v2-1-cc349e137f75@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Javier Carrasco
fc04cc73c5 iio: light: veml6070: use dev_err_probe in probe function 
Drop the common 'dev_err() + return' combination in the probe function
and use 'return dev_err_probe()' instead.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20240929-veml6070-cleanup-v1-7-a9350341a646@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Javier Carrasco
8a49c37321 iio: light: veml6070: add devicetree support 
Register the compatible from the dt-bindings.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20240929-veml6070-cleanup-v1-6-a9350341a646@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Javier Carrasco
eba200d5bf dt-bindings: iio: light: vishay,veml6075: add vishay,veml6070 
This UVA device with I2C has the same properties as the veml6075, and
the same dt-bindings can cover it too.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20240929-veml6070-cleanup-v1-5-a9350341a646@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Javier Carrasco
4ad62021c2 iio: light: veml6070: add support for a regulator 
Add support for a device-managed regulator with the reference name
provided in the datasheet (vdd).

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20240929-veml6070-cleanup-v1-4-a9350341a646@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Javier Carrasco
d92fcd7e92 iio: light: veml6070: use device managed iio_device_register 
Simplify the code by using devm_iio_device_register(), which removes the
need for a 'remove' function, as there are no more actions to take.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20240929-veml6070-cleanup-v1-3-a9350341a646@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Javier Carrasco
fc38525135 iio: light: veml6070: use guard to handle mutex 
Simplify the mutext handling by using a guard to automate the mutex
unlocking.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20240929-veml6070-cleanup-v1-2-a9350341a646@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Javier Carrasco
7501bff87c iio: light: veml6070: add action for i2c_unregister_device 
Simplify the code by adding an action to call i2c_unregister_device(),
which removes the need for a 'fail' label, gotos to it, and an explicit
call in veml6070_remove().

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20240929-veml6070-cleanup-v1-1-a9350341a646@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Abhash Jha
0f87813bc3 iio: dac: ad5770r: Convert to get_unaligned_le16 
Convert the manual shifting to use `get_unaligned_le16` api.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240928161805.165543-1-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Abhash Jha
41c1b5670c iio: adc: mt6360-adc: Converted to use get_unaligned_be16() 
Changed the manual shifting and adding of bytes to use
get_unaligned_be16() api instead.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240928161108.163647-1-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Yu Jiaoliang
0b0c004950 iio: adc: Fix typos in comments across various files 
This commit fixes several typographical errors in comments within
the drivers/iio/adc directory. No functional changes are made.

Detected using codespell.

Signed-off-by: Yu Jiaoliang <yujiaoliang@vivo.com>
Link: https://patch.msgid.link/20240926034411.3482986-1-yujiaoliang@vivo.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Shreeya Patel
aa6b1dd156 iio: light: ltrf216a: Document device name for compatible 
Compatible 'ltr,ltrf216a' is used by Valve's Steamdeck device
via the ACPI + PRP0001 mechanism.
Document this info alongside the compatible.

Signed-off-by: Shreeya Patel <shreeya.patel@collabora.com>
Link: https://patch.msgid.link/20240923131527.1408691-1-shreeya.patel@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:15 +01:00
Jean-Baptiste Maneyrol
8525592196 iio: imu: inv_mpu6050: add support for IAM-20680HT/HP 
IAM-20680HT & HP are 2 variants of IAM-20680 with better specs,
wider temperature range, and a bigger FIFO (4k).

Fully compatible with IAM-20680, FIFO is 512 bytes by default and
with correct register setting we expand it to full 4k.

Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://patch.msgid.link/20240923-inv-mpu6050-add-iam20680-ht-hp-v2-2-48290e0b9931@tdk.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Jean-Baptiste Maneyrol
129bb33f0d dt-bindings: iio: imu: mpu6050: Add iam20680ht/hp bindings to mpu6050 
IAM-20680HT & HP are 2 variants of IAM-20680 that are backwards compatible.
They just have better specs, temperature range and a bigger FIFO.

Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20240923-inv-mpu6050-add-iam20680-ht-hp-v2-1-48290e0b9931@tdk.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Javier Carrasco
4010e7894b iio: adc: ad5755: use scoped device_for_each_child_node() 
Switch to device_for_each_child_node_scoped() to simplify the code by
removing the need for calls to fwnode_handle_put() in the error path, in
this particular case dropping the jump to error_out as well.

This prevents possible memory leaks if new error paths are added without
the required call to fwnode_handle_put().

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20240926-iio_device_for_each_child_node_scoped-v1-4-64ca8a424578@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Javier Carrasco
0c78543660 iio: adc: sun20i-gpadc: use scoped device_for_each_child_node() 
Switch to device_for_each_child_node_scoped() to simplify the code by
removing the need for calls to fwnode_handle_put() in the error path.

This prevents possible memory leaks if new error paths are added without
the required call to fwnode_handle_put().

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Link: https://patch.msgid.link/20240926-iio_device_for_each_child_node_scoped-v1-3-64ca8a424578@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Javier Carrasco
140eff34e1 iio: adc: qcom-spmi-vadc: use scoped device_for_each_child_node() 
Switch to device_for_each_child_node_scoped() to simplify the code by
removing the need for calls to fwnode_handle_put() in the error path.

This prevents possible memory leaks if new error paths are added without
the required call to fwnode_handle_put().

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20240926-iio_device_for_each_child_node_scoped-v1-2-64ca8a424578@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Javier Carrasco
db44b37a20 iio: adc: qcom-pm8xxx-xoadc: use scoped device_for_each_child_node() 
Switch to device_for_each_child_node_scoped() to simplify the code by
removing the need for calls to fwnode_handle_put() in the error path.

This prevents possible memory leaks if new error paths are added without
the required call to fwnode_handle_put().

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20240926-iio_device_for_each_child_node_scoped-v1-1-64ca8a424578@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Uwe Kleine-König
ee3bf0c148 iio: adc: ti-ads1119: Drop explicit initialization of struct i2c_device_id::driver_data to 0 
These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Reviewed-by: João Paulo Gonçalves <jpaulo.silvagoncalves@gmail.com>
Link: https://patch.msgid.link/20240920153430.503212-11-u.kleine-koenig@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Abhash Jha
f0da5b8764 iio: light: ltr390: Replaced mask values with GENMASK() 
Changed the hardcoded mask values for GAIN_MASK and INT_TIME_MASK to use
GENMASK() instead.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240914182239.507953-1-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Abhash Jha
498a640a2e iio: light: ltr390: Add interrupt persistance support 
Added support to configure the threshold interrupt persistance value by
providing IIO_EV_INFO_PERIOD attribute. The value written to the
attribute should be in miliseconds and should be greater than the
sampling rate of the sensor.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240914181246.504450-5-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Abhash Jha
7ca4b89570 iio: light: ltr390: Interrupts and threshold event support 
Added support for threshold events for both the ALS and UVI channels.
The events are reported when the threshold interrupt is triggered. Both
rising and falling threshold types are supported.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240914181246.504450-4-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Abhash Jha
288ce72fb5 iio: light: ltr390: Suspend and Resume support 
Added support for suspend and resume PM ops.
We suspend the sensor by clearing the ALS_UVS_EN bit in the MAIN CONTROL
register. And we resume it by setting that bit.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240914181246.504450-3-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Abhash Jha
bd7057bb94 iio: light: ltr390: Added configurable sampling frequency support 
Provided configurable sampling frequency(Measurement rate) support.
Also exposed the available sampling frequency values using read_avail
callback.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240914181246.504450-2-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:14 +01:00
Abhash Jha
c2c4826cfa iio: adc: max1363: Convert to get_unaligned_be16 
Converted manual shifting and or to use `get_unaligned_be16` api
instead.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240920181437.20194-1-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:13 +01:00
Hridesh MG
0159d3b89f staging: iio: Fix alignment warning 
Reported by checkpatch:

CHECK: Alignment should match open parenthesis

Signed-off-by: Hridesh MG <hridesh699@gmail.com>
Acked-by: Steven Davis <goldside000@outlook.com>
Link: https://patch.msgid.link/20240918174320.614642-1-hridesh699@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:13 +01:00
Alexandru Ardelean
f3838e934d iio: adc: ad7606: add support for AD7606C-{16,18} parts 
The AD7606C-16 and AD7606C-18 are pretty similar with the AD7606B.
The main difference between AD7606C-16 & AD7606C-18 is the precision in
bits (16 vs 18).
Because of that, some scales need to be defined for the 18-bit variants, as
they need to be computed against 2**18 (vs 2**16 for the 16 bit-variants).

Because the AD7606C-16,18 also supports bipolar & differential channels,
for SW-mode, the default range of 10 V or ±10V should be set at probe.
On reset, the default range (in the registers) is set to value 0x3 which
corresponds to '±10 V single-ended range', regardless of bipolar or
differential configuration.

Aside from the scale/ranges, the AD7606C-16 is similar to the AD7606B.

The AD7606C-18 variant offers 18-bit precision. Because of this, the
requirement to use this chip is that the SPI controller supports padding
of 18-bit sequences to 32-bit arrays.

Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606c-16.pdf
Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606c-18.pdf

Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Link: https://patch.msgid.link/20240919130444.2100447-9-aardelean@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-05 12:09:06 +01:00
Alexandru Ardelean
0733e5148b dt-bindings: iio: adc: add docs for AD7606C-{16,18} parts 
The driver will support the AD7606C-16 and AD7606C-18.
This change adds the compatible strings for these devices.

The AD7606C-16,18 channels also support these (individually configurable)
types of channels:
 - bipolar single-ended
 - unipolar single-ended
 - bipolar differential

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Link: https://patch.msgid.link/20240919130444.2100447-8-aardelean@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-09-30 09:21:04 +01:00
Alexandru Ardelean
ab38c083ff dt-bindings: iio: adc: document diff-channels corner case for some ADCs 
Some ADCs have channels with negative and positive inputs, which can be
used to measure differential voltage levels. These inputs/pins are
dedicated (to the given channel) and cannot be muxed as with other ADCs.

For those types of setups, the 'diff-channels' property can be specified to
be used with the channel number (or reg property) for both negative and
positive inputs/pins.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Link: https://patch.msgid.link/20240919130444.2100447-7-aardelean@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-09-30 09:21:04 +01:00
Alexandru Ardelean
94aab7a0f5 iio: adc: ad7606: rework available attributes for SW channels 
For SW mode, the oversampling and scales attributes are always present.
So, they can be implemented via a 'read_avail' hook in iio_info.

For HW mode, it's a bit tricky, as these attributes get assigned based on
GPIO definitions.

So, for SW mode, we define a separate AD7606_SW_CHANNEL() macro, and use
that for the SW channels.
And 'ad7606_info_os_range_and_debug' can be renamed to
'ad7606_info_sw_mode' as it is only used for SW mode.

For the 'read_avail' hook, we'll need to allocate the SW scales, so that
they are just returned userspace without any extra processing.
The allocation will happen when then ad7606_state struct is allocated.
The oversampling available parameters don't need any extra processing; they
can just be passed back to userspace (as they are).

Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Link: https://patch.msgid.link/20240919130444.2100447-6-aardelean@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-09-30 09:21:04 +01:00
Alexandru Ardelean
bbd478f2cb iio: adc: ad7606: wrap channel ranges & scales into struct 
With the addition of AD7606C-16,18 which have differential & bipolar
channels (and ranges), which can vary from channel to channel, we'll need
to keep more information about each channel range.

To do that, we'll add a 'struct ad7606_chan_scale' type to hold just
configuration for each channel.
This includes the scales per channel (which can be different with
AD7606C-16,18), as well as the range for each channel.
This driver was already keeping the range value for each channel before,
and since this is couple with the scales, it also makes sense to put them
in the same struct.

Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Link: https://patch.msgid.link/20240919130444.2100447-5-aardelean@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-09-30 09:21:04 +01:00
Alexandru Ardelean
e571c19021 iio: adc: ad7606: move scale_setup as function pointer on chip-info 
Up until now, all ADCs were 16-bit precision.
With the addition of the AD7606C some things will change. For one thing,
we'll need to setup available-scales for each channel. Also for the 18-bit
precision variants, the scales will be different.

This change adds a function-pointer to the chip-info struct to be able to
set this up (differently) for the new parts. For the current parts, the
scales are the same (for all parts) between HW and SW modes.

Also creating a 'ad7606_sw_mode_setup()' function that must be called
before the scale_setup callback. This is needed in case SW mode is enabled
for some ADCs.

Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Link: https://patch.msgid.link/20240919130444.2100447-4-aardelean@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-09-30 09:21:04 +01:00
Alexandru Ardelean
d2041446a7 iio: adc: ad7606: move 'val' pointer to ad7606_scan_direct() 
The ad7606_scan_direct() function returns 'int', which is fine for 16-bit
samples.
But when going to 18-bit samples, these need to be implemented as 32-bit
(or int) type.

In that case when getting samples (which can be negative), we'd get random
error codes.
So, the easiest thing is to just move the 'val' pointer to
'ad7606_scan_direct()'. This doesn't qualify as a fix, it's just a
preparation for 18-bit ADCs (of the AD7606 family).

Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Link: https://patch.msgid.link/20240919130444.2100447-3-aardelean@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-09-30 09:21:04 +01:00
Alexandru Ardelean
300a90a6ba iio: adc: ad7606: add 'bits' parameter to channels macros 
There are some newer additions to the AD7606 family, which support 18 bit
precision. Up until now, all chips were 16 bit.

This change adds a 'bits' parameter to the AD760X_CHANNEL macro and renames
'ad7606_channels' -> 'ad7606_channels_16bit' for the current devices.

The AD7606_SW_CHANNEL() macro is also introduced, as a short-hand for IIO
channels in SW mode.

Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240919130444.2100447-2-aardelean@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-09-30 09:21:04 +01:00