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2024-09-03iio: magnetometer: ak8975: Relax failure on unknown idBarnabás Czémán1-3/+7
Relax failure when driver gets an unknown device id for allow probe for register compatible devices. Signed-off-by: Barnabás Czémán <barnabas.czeman@mainlining.org> Link: https://patch.msgid.link/20240819-ak09918-v4-1-f0734d14cfb9@mainlining.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-21drivers:iio:Fix the NULL vs IS_ERR() bug for debugfs_create_dir()Yang Ruibin1-1/+1
The debugfs_create_dir() function returns error pointers. It never returns NULL. So use IS_ERR() to check it. Signed-off-by: Yang Ruibin <11162571@vivo.com> Link: https://patch.msgid.link/20240821083911.3411-1-11162571@vivo.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-21iio: sgp40: retain documentation in driverAndreas Klinger1-3/+8
Retain documentation on how the voc index is actually calculated in driver code as it'll be removed in Documentation. This is a follow up on patch "[PATCH] iio: ABI: remove duplicate in_resistance_calibbias" from David. Signed-off-by: Andreas Klinger <ak@it-klinger.de> Link: https://patch.msgid.link/ZsWdFOIkDtEB9WGO@mail.your-server.de Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-17iio: light: ltr390: Calculate 'counts_per_uvi' dynamicallyAbhash Jha1-2/+12
counts_per_uvi depends on the current value of gain and resolution. Hence, we cannot use the hardcoded value 96. The `counts_per_uvi` function gives the count based on the current gain and resolution (integration time). Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com> Link: https://patch.msgid.link/20240814113135.14575-3-abhashkumarjha123@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-17iio: light: ltr390: Add ALS channel and support for gain and resolutionAbhash Jha1-15/+90
Add new ALS channel and allow reading lux and scale values. Also provide gain and resolution configuration for ALS channel. Add automatic mode switching between the UVS and ALS channel based on which channel is being accessed. The default mode in which the sensor start is ALS mode. Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com> Link: https://patch.msgid.link/20240814113135.14575-2-abhashkumarjha123@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-17iio: adc: ad4695: implement triggered bufferDavid Lechner1-3/+247
This implements buffered reads for the ad4695 driver using the typical triggered buffer implementation, including adding a soft timestamp channel. The chip has 4 different modes for doing conversions. The driver is using the advanced sequencer mode since that is the only mode that allows individual configuration of all aspects each channel (e.g. bipolar config currently and oversampling to be added in the future). Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240813-iio-adc-ad4695-buffered-read-v2-1-9bb19fc1924b@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-17iio: proximity: hx9023s: Fix error code in hx9023s_property_get()Dan Carpenter1-1/+2
If we're returning because "reg >= HX9023S_CH_NUM" then set the error code to -ENIVAL instead of success. Fixes: 60df548277b7 ("iio: proximity: Add driver support for TYHX's HX9023S capacitive proximity sensor") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://patch.msgid.link/49b5a9bc-e5ca-43a7-a665-313eb06fbe27@stanley.mountain Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-17iio: light: noa1305: Fix up integration time look upMarek Vasut1-1/+1
The current code is always iterating over two fields in the noa1305_int_time_available array. Fix iteration limit, which has to be halved to avoid out of bounds access in case the value that is being looked up is not in the array. Fixes: 025f23cfebad ("iio: light: noa1305: Make integration time configurable") Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Suggested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Marek Vasut <marex@denx.de> Link: https://patch.msgid.link/20240814191946.81386-1-marex@denx.de Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-17iio: humidity: Add support for ENS210Joshua Felmeden3-0/+351
Add support for ENS210/ENS210A/ENS211/ENS212/ENS213A/ENS215. The ENS21x is a family of temperature and relative humidity sensors with accuracies tailored to the needs of specific applications. Signed-off-by: Joshua Felmeden <jfelmeden@thegoodpenguin.co.uk> Link: https://patch.msgid.link/20240805-ens21x-v6-2-5bb576ef26a6@thegoodpenguin.co.uk Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-17iio: imu: inv_mpu6050: fix interrupt status read for old buggy chipsJean-Baptiste Maneyrol1-2/+11
Interrupt status read seems to be broken on some old MPU-6050 like chips. Fix by reverting to previous driver behavior bypassing interrupt status read. This is working because these chips are not supporting WoM and data ready is the only interrupt source. Fixes: 5537f653d9be ("iio: imu: inv_mpu6050: add new interrupt handler for WoM events") Cc: stable@vger.kernel.org Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com> Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # LG P895 Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # LG P880 Link: https://patch.msgid.link/20240814143735.327302-1-inv.git-commit@tdk.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-17iio: adc: ad7173: fix GPIO device infoDumitru Ceclan1-3/+0
Models AD4114/5/6 have .higher_gpio_bits = true. This is not correct as the only models that have the GPIO bits to a higher position are AD4111/2. Fix by removing the higher_gpio_bits = true from the AD4114/5/6 models. Fixes: 13d12e3ad12d ("iio: adc: ad7173: Add support for AD411x devices") Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Link: https://patch.msgid.link/20240809134909.26829-1-dumitru.ceclan@analog.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: imu: adis16460: drop ifdef around CONFIG_DEBUG_FSNuno Sa1-14/+4
Use IS_ENABLED(CONFIG_DEBUG_FS) to return in case debugfs is not present. Since this is known at compile time, it allows the compiler to drop any unused code. Therefore no need to wrap the code with #ifdef. While at it make adis16460_debugfs_init() void as the return code is ignored. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240809-dev-adis-debugfs-improv-v1-4-d3adb6996518@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: imu: adis16400: drop ifdef around CONFIG_DEBUG_FSNuno Sa1-14/+4
Use IS_ENABLED(CONFIG_DEBUG_FS) to return in case debugfs is not present. Since this is known at compile time, it allows the compiler to drop any unused code. Therefore no need to wrap the code with #ifdef. While at it make adis16400_debugfs_init() void as the return code is ignored. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240809-dev-adis-debugfs-improv-v1-3-d3adb6996518@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: imu: adis16480: drop ifdef around CONFIG_DEBUG_FSNuno Sa1-14/+4
Use IS_ENABLED(CONFIG_DEBUG_FS) to return in case debugfs is not present. Since this is known at compile time, it allows the compiler to drop any unused code. Therefore no need to wrap the code with #ifdef. While at it make adis16480_debugfs_init() void as the return code is ignored. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240809-dev-adis-debugfs-improv-v1-2-d3adb6996518@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: imu: adis16475: drop ifdef around CONFIG_DEBUG_FSNuno Sa1-6/+3
Use IS_ENABLED(CONFIG_DEBUG_FS) to return early in case debugfs is not present. Since this is known at compile time, it allows the compiler to drop any unused code. Therefore no need to wrap the code with #ifdef. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240809-dev-adis-debugfs-improv-v1-1-d3adb6996518@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: adc: pac1921: add missing error return in probe()Dan Carpenter1-2/+2
This error path was intended to return, and not just print an error. The current code will lead to an error pointer dereference. Fixes: 371f778b83cd ("iio: adc: add support for pac1921") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Acked-by: Matteo Martelli <matteomartelli3@gmail.com> Link: https://patch.msgid.link/1fa4ab12-0939-477d-bc92-306fd32e4fd9@stanley.mountain Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: Fix spelling mistake "avaialable" -> "available"Colin Ian King1-1/+1
There is a spelling mistake in a dev_warn message. Fix it. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://patch.msgid.link/20240807094745.4174785-1-colin.i.king@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: dac: ltc2664: Fix off by one in ltc2664_channel_config()Dan Carpenter1-1/+1
This comparison should be >= ARRAY_SIZE() instead of >. The "mspan" variable is later used as an array index into ltc2664_mspan_lut[] so this is an off by one bug. Fixes: 4cc2fc445d2e ("iio: dac: ltc2664: Add driver for LTC2664 and LTC2672") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://patch.msgid.link/5727ab54-6280-466e-b107-1b6006e5ab29@stanley.mountain Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: bmi323: suspend and resume triggering on relevant pm operationsDenis Benato4-0/+26
Prevent triggers from stop working after the device has entered sleep: use iio_device_suspend_triggering and iio_device_resume_triggering helpers. Signed-off-by: Denis Benato <benato.denis96@gmail.com> Link: https://patch.msgid.link/20240807185619.7261-3-benato.denis96@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: trigger: allow devices to suspend/resume theirs associated triggerDenis Benato1-0/+27
When a machine enters a sleep state while a trigger is associated to an iio device that trigger is not resumed after exiting the sleep state: provide iio device drivers a way to suspend and resume the associated trigger to solve the aforementioned bug. Each iio driver supporting external triggers is expected to call iio_device_suspend_triggering before suspending, and iio_device_resume_triggering upon resuming. Signed-off-by: Denis Benato <benato.denis96@gmail.com> Link: https://patch.msgid.link/20240807185619.7261-2-benato.denis96@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: light: apds9960: Add proximity and gesture offset calibrationAbhash Jha1-1/+54
Proximity and gesture offset registers perform offset correction to improve cross-talk performance. Added `calibbias` to the proximity and gesture channels. Provided facility to set calibbias based on the channel number. Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com> Link: https://patch.msgid.link/20240804134212.51682-2-abhashkumarjha123@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: adc: stm32-dfsdm: add scaling support to dfsdmOlivier Moysan2-1/+105
Add scaling support to STM32 DFSDM. When used in an analog context, a DFSDM filter typically converts the data from a sigma delta modulator. The IIO device associated to the DFSDM filter provides these data as raw data. The IIO device can provide scaling information (voltage and offset) to allow conversion of raw data into physical values. With the new binding based on IIO backend framework, the sigma delta modulators are defined as backends providing scaling information. The scaling is not supported with legacy binding. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Acked-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240730084640.1307938-10-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: add iio backend support to sd modulatorOlivier Moysan2-1/+97
The legacy sd modulator driver registers the sigma delta modulator as an IIO channel provider. This implementation is not convenient when the SD modulator has to be cascaded with another IIO device. The scaling information is distributed across devices, which makes it difficult to report consistent scaling data on IIO devices. The solution is to expose these cascaded IIO devices as an aggregate device, which report global scaling information. Add IIO backend support to SD modulator to allow scaling information management. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Link: https://patch.msgid.link/20240730084640.1307938-9-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: adc: stm32-dfsdm: adopt generic channels bindingsOlivier Moysan1-36/+154
Move to generic channels binding to ease new backend framework adoption and prepare the convergence with MDF IP support on STM32MP2 SoC family. Legacy binding: DFSDM is an IIO channel consumer. SD modulator is an IIO channels provider. The channel phandles are provided in DT through io-channels property and channel indexes through st,adc-channels property. New binding: DFSDM is an IIO channel provider. The channel indexes are given by reg property in channel child node. This new binding is intended to be used with SD modulator IIO backends. It does not support SD modulator legacy IIO devices. The st,adc-channels property presence is used to discriminate between legacy and backend bindings. The support of the DFSDM legacy channels and SD modulator IIO devices is kept for backward compatibility. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Link: https://patch.msgid.link/20240730084640.1307938-8-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: add child nodes support in iio backend frameworkOlivier Moysan1-16/+41
Add an API to support IIO generic channels binding: http://devicetree.org/schemas/iio/adc/adc.yaml# This new API is needed, as generic channel DT node isn't populated as a device. Add devm_iio_backend_fwnode_get() to allow an IIO device backend consumer to reference backend phandles in its child nodes. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240730084640.1307938-4-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: add enable and disable services to iio backend frameworkOlivier Moysan1-1/+24
Add iio_backend_disable() and iio_backend_enable() APIs to allow IIO backend consumer to request backend disabling and enabling. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240730084640.1307938-3-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: add read scale and offset services to iio backend frameworkOlivier Moysan1-0/+19
Add iio_backend_read_scale() and iio_backend_read_offset() services to read channel scale and offset from an IIO backbend device. Also add a read_raw callback which replicates the read_raw callback of the IIO framework, and is intended to request miscellaneous channel attributes from the backend device. Both scale and offset helpers use this callback. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240730084640.1307938-2-olivier.moysan@foss.st.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: magnetometer: ak8975: drop incorrect AK09116 compatibleKrzysztof Kozlowski1-1/+0
All compatibles in this binding without prefixes were deprecated, so adding a new deprecated one after some time is not allowed, because it defies the core logic of deprecating things. Drop the AK09916 vendorless compatible. Fixes: 76e28aa97fa0 ("iio: magnetometer: ak8975: add AK09116 support") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://patch.msgid.link/20240806053016.6401-1-krzysztof.kozlowski@linaro.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: dac: ad9739a: add backend debugfs interfaceNuno Sa1-1/+7
Call iio_backend_debugfs_add() to add (if available) the backend debug interface. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240806-dev-backend-dac-direct-reg-access-v1-2-b84a6e8ee8a0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: dac: adi-axi-dac: support debugfs direct_reg_accessNuno Sa1-0/+12
Make it possible to read/write registers on the backend using the debugfs interface for it. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240806-dev-backend-dac-direct-reg-access-v1-1-b84a6e8ee8a0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-10iio: remove unneeded assignment in __iio_format_valueMatteo Martelli1-1/+0
Trivial cleanup in __iio_format_value() for the IIO_VAL_FRACTIONAL case where tmp1 = vals[1] assignment is unneeded and irrelevant since tmp1 is immediately overwritten by the subsequent div_s64_rem() call. Signed-off-by: Matteo Martelli <matteomartelli3@gmail.com> Link: https://patch.msgid.link/20240730-iio-clean-fmt-value-v1-1-3e1c3deafc33@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-06iio: adc: ad7124: fix DT configuration parsingDumitru Ceclan1-2/+1
The cfg pointer is set before reading the channel number that the configuration should point to. This causes configurations to be shifted by one channel. For example setting bipolar to the first channel defined in the DT will cause bipolar mode to be active on the second defined channel. Fix by moving the cfg pointer setting after reading the channel number. Fixes: 7b8d045e497a ("iio: adc: ad7124: allow more than 8 channels") Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240806085133.114547-1-dumitru.ceclan@analog.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-06iio: adc: ad_sigma_delta: fix irq_flags on irq requestNuno Sa1-1/+1
With commit 7b0c9f8fa3d2 ("iio: adc: ad_sigma_delta: Add optional irq selection"), we can get the irq line from struct ad_sigma_delta_info instead of the spi device. However, in devm_ad_sd_probe_trigger(), when getting the irq_flags with irq_get_trigger_type() we are still using the spi device irq instead of the one used for devm_request_irq(). Fixes: 7b0c9f8fa3d2 ("iio: adc: ad_sigma_delta: Add optional irq selection") Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240806-dev-fix-ad-sigma-delta-v1-1-aa25b173c063@analog.com Cc: <stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: ads1119: Fix IRQ flagsFrancesco Dolcini1-1/+1
Remove IRQF_TRIGGER_FALLING flag from irq request, this should come from the platform firmware and should not be hard-coded into the driver. Add IRQF_ONESHOT flag to the irq request, the interrupt should not be re-activated in interrupt context, it should be done only after the device irq handler run. Fixes: a9306887eba4 ("iio: adc: ti-ads1119: Add driver") Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Reviwed-by: João Paulo Gonçalves <jpaulo.silvagoncalves@gmail.com> Link: https://patch.msgid.link/20240731140657.88265-1-francesco@dolcini.it Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: fix scale application in iio_convert_raw_to_processed_unlockedMatteo Martelli1-4/+4
When the scale_type is IIO_VAL_INT_PLUS_MICRO or IIO_VAL_INT_PLUS_NANO the scale passed as argument is only applied to the fractional part of the value. Fix it by also multiplying the integer part by the scale provided. Fixes: 48e44ce0f881 ("iio:inkern: Add function to read the processed value") Signed-off-by: Matteo Martelli <matteomartelli3@gmail.com> Link: https://patch.msgid.link/20240730-iio-fix-scale-v1-1-6246638c8daa@gmail.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: ad7124: set initial ADC mode to idleDumitru Ceclan1-0/+3
During setup the st->adc_control is 0, which corresponds to a continuous conversion mode. The reset value for channel 1 is to enable it. The combined effect of these two is that the ADC will start conversions for channel 1 without them being read. This is not neccessarily a problem, but it is an unexpected behavior. Set the ADC state to idle during setup to avoid this. Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240731-ad7124-fix-v1-4-46a76aa4b9be@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: ad7124: reduce the number of SPI transfersDumitru Ceclan1-19/+12
The ad7124_init_config_vref() function writes the AD7124_ADC_CONTROL register for each channel that is configured to use the internal reference. The ad7124_write_config()function performs 7 SPI transfers for configuring 2 registers: config_x and filter_x. Reduce the number of SPI transfers: -during the probe by only setting the st->adc_control value in ad7124_init_config_vref() and writing to the device only at the end of ad7124_setup(). -in ad7124_write_config() by grouping writes to the same register. Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240731-ad7124-fix-v1-3-46a76aa4b9be@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: ad7124: fix config comparisonDumitru Ceclan1-11/+15
The ad7124_find_similar_live_cfg() computes the compare size by substracting the address of the cfg struct from the address of the live field. Because the live field is the first field in the struct, the result is 0. Also, the memcmp() call is made from the start of the cfg struct, which includes the live and cfg_slot fields, which are not relevant for the comparison. Fix by grouping the relevant fields with struct_group() and use the size of the group to compute the compare size; make the memcmp() call from the address of the group. Fixes: 7b8d045e497a ("iio: adc: ad7124: allow more than 8 channels") Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240731-ad7124-fix-v1-2-46a76aa4b9be@analog.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: ad7124: fix chip ID mismatchDumitru Ceclan1-0/+1
The ad7124_soft_reset() function has the assumption that the chip will assert the "power-on reset" bit in the STATUS register after a software reset without any delay. The POR bit =0 is used to check if the chip initialization is done. A chip ID mismatch probe error appears intermittently when the probe continues too soon and the ID register does not contain the expected value. Fix by adding a 200us delay after the software reset command is issued. Fixes: b3af341bbd96 ("iio: adc: Add ad7124 support") Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240731-ad7124-fix-v1-1-46a76aa4b9be@analog.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: light: ltr390: Add configurable gain and resolutionAbhash Jha1-11/+125
Add support for configuring and reading the gain and resolution (integration time). Also provide the available values for gain and resoltion respectively via `read_avail` callback. Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com> Link: https://patch.msgid.link/20240731063706.25412-2-abhashkumarjha123@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: ad9467: add digital interface test to debugfsNuno Sa1-0/+188
One useful thing to do (in case of problems) in this high speed devices with digital interfaces is to try different test patterns to see if the interface is working properly (and properly calibrated). Hence add this to debugfs. On top of this, for some test patterns, the backend may have a matching validator block which can be helpful in identifying possible issues. For the other patterns some test equipment must be used so one can look into the signal and see how it looks like. Hence, we also add the backend debugfs interface with iio_backend_debugfs_add(). Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-8-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: ad9467: add backend test mode helpersNuno Sa1-25/+42
Group the backend configurations to be done in preparing and stopping calibration in two new helpers analogous to ad9467_testmode_set(). This is in preparation for adding support for debugFS test_mode where we need similar configurations as in the calibration process. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-7-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: adi-axi-adc: implement backend debugfs interfaceNuno Sa1-0/+41
Implement debugfs options to read/write registers and print the channel status into a buffer (so we may know better the cause for errors) . Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-6-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: adi-axi-adc: split axi_adc_chan_status()Nuno Sa1-5/+14
Add a new axi_adc_read_chan_status() helper so we get the raw register value out of it. This is in preparation of a future change where we really want to look into dedicated bits of the register. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-5-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: adi-axi-adc: support modified prbs23Nuno Sa1-0/+4
Add support for configuring the prbs23 sequence. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-4-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: backend: add debugFs interfaceNuno Sa1-0/+145
This adds a basic debugfs interface for backends. Two new ops are being added: * debugfs_reg_access: Analogous to the core IIO one but for backend devices. * debugfs_print_chan_status: One useful usecase for this one is for testing test tones in a digital interface and "ask" the backend to dump more details on why a test tone might have errors. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-2-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: backend: introduce struct iio_backend_infoNuno Sa3-7/+17
Instead of only passing the backend ops when calling devm_iio_backend_register(), pass an info like structure that will contains the ops and additional information. Fow now, the backend name is being added as that will be used by the debugFS interface introduced in a later patch. It also opens the door for further customizations passed by backends. All users of devm_iio_backend_register() were updated accordingly. Signed-off-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-1-4cb62852f0d0@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: aspeed: Use of_property_present()Rob Herring (Arm)1-2/+1
Use of_property_present() to test for property presence rather than of_find_property(). This is part of a larger effort to remove callers of of_find_property() and similar functions. of_find_property() leaks the DT struct property and data pointers which is a problem for dynamically allocated nodes which may be freed. Signed-off-by: Rob Herring (Arm) <robh@kernel.org> Acked-by: Andrew Jeffery <andrew@codeconstruct.com.au> Link: https://patch.msgid.link/20240731191312.1710417-5-robh@kernel.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: ad7768-1: use device_* to iterate over device child nodesJavier Carrasco1-4/+1
Drop the manual access to the fwnode of the device to iterate over its child nodes. `device_for_each_child_node` macro provides direct access to the child nodes, and given that they are only required within the loop, the scoped variant of the macro can be used. Use the `device_for_each_child_node_scoped` macro to iterate over the direct child nodes of the device. Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://patch.msgid.link/20240801-device_child_node_access-v1-2-ddfa21bef6f2@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03iio: adc: ad7380: enable sequencer for single-ended partsJulien Stephan1-45/+130
ad7386/7/8(-4) single-ended parts have a 2:1 mux in front of each ADC. >From an IIO point of view, all inputs are exported, i.e ad7386/7/8 export 4 channels and ad7386-4/7-4/8-4 export 8 channels. First inputs of muxes correspond to the first half of IIO channels (i.e 0-1 or 0-3) and second inputs correspond to second half (i.e 2-3 or 4-7) Currently, the driver supports only sampling first half OR second half of the IIO channels. To enable sampling all channels simultaneously, these parts have an internal sequencer that automatically cycles through the mux entries. When enabled, the maximum throughput is divided by two. Moreover, the ADCs need additional settling time, so we add an extra CS toggle to correctly propagate setting, and an additional spi transfer to read the second half. Signed-off-by: Julien Stephan <jstephan@baylibre.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-6-cd63bf05744c@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
generated by cgit v1.2.3 (git 2.39.0) at 2026-05-19 11:47:19 +0300