linux-dev/drivers/staging/iio/impedance-analyzer, branch master

iio: core: Simplify the registration of kfifo buffers

2022-04-10T15:25:46Z

Among all the users of the kfifo buffers, no one uses the INDIO_BUFFER_HARDWARE mode. So let's take this as a general rule and simplify a little bit the internals - overall the documentation - by eliminating unused specific cases. Use the INDIO_BUFFER_SOFTWARE mode by default with kfifo buffers, which will basically mimic what all the "non direct" modes do. Cc: Benson Leung Cc: Guenter Roeck Cc: Jyoti Bhayana Cc: Jean-Baptiste Maneyrol Cc: Lorenzo Bianconi Cc: Michael Hennerich Cc: Greg Kroah-Hartman Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/r/20220207143840.707510-13-miquel.raynal@bootlin.com Signed-off-by: Jonathan Cameron

iio: make use of devm_iio_kfifo_buffer_setup() helper

2021-03-11T20:47:01Z

All drivers that already call devm_iio_kfifo_allocate() & iio_device_attach_buffer() are simple to convert to iio_device_attach_kfifo_buffer() in a single go. This change does that; the unwind order is preserved. What is important, is that the devm_iio_kfifo_buffer_setup() be called after the indio_dev->modes is assigned, to make sure that INDIO_BUFFER_SOFTWARE flag is set and not overridden by the assignment to indio_dev->modes. Also, the INDIO_BUFFER_SOFTWARE has been removed from the assignments of 'indio_dev->modes' because it is set by devm_iio_kfifo_buffer_setup(). Signed-off-by: Alexandru Ardelean Reviewed-by: Gwendal Grignou Reviewed-by: Matt Ranostay x Link: https://lore.kernel.org/r/20210215104043.91251-4-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron

iio: remove explicit IIO device parent assignment

2020-06-14T10:49:59Z

This patch applies the semantic patch: @@ expression I, P, SP; @@ I = devm_iio_device_alloc(P, SP); ... - I->dev.parent = P; It updates 302 files and does 307 deletions. This semantic patch also removes some comments like '/* Establish that the iio_dev is a child of the i2c device */' But this is is only done in case where the block is left empty. The patch does not seem to cover all cases. It looks like in some cases a different variable is used in some cases to assign the parent, but it points to the same reference. In other cases, the block covered by ... may be just too big to be covered by the semantic patch. However, this looks pretty good as well, as it does cover a big bulk of the drivers that should remove the parent assignment. Signed-off-by: Alexandru Ardelean Signed-off-by: Jonathan Cameron

staging: iio: ad5933: attach life-cycle of kfifo buffer to parent device and use managed calls throughout

2020-05-11T19:19:19Z

This change makes the use of devm_iio_kfifo_allocate() to attach the life-cycle of the kfifo buffer to the parent (client->dev) object. This removes the need to explicitly free 'indio_dev->buffer' via iio_kfifo_free(), which is the main intent. Having done this, it is straight forward to move to devm_ calls throughout and drop the remove function. Signed-off-by: Alexandru Ardelean Signed-off-by: Jonathan Cameron

Merge tag 'iio-for-5.2a-2' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

2019-04-04T20:25:29Z

Jonathan writes: First set of new device support, features and fixes for IIO in the 5.2 cycle Staging graduations * ad7780 - Move this ADC driver out of staging. Included adding some new features along the way (see below). Also added DT bindings. New device support * adis16480 - Support the ADIS16495 and ADIS16497 IMU devices making heavy use of refactoring of various aspects of the driver in precursor patches. * lsm6dsx - Support for the ASM330LHH 6-axis (accelerometer + gyro) sensor. - Support for the LSM6DS0X * matbotix mb1232 - New driver for this ultrasound ranging device family. Including bindings. - Supports mb1202, mb1212, mb1222, mb1232, mb1242, mb7040 and mb7137. * max31856 - New driver for this thermocouple temperature sensor. * meson saradc - Support the Meson-G12A (ID addition only). * stmpe-adc - New driver supporting generic ADC alongside touchscreen support which previously existed. Includes DT bindings. * vcnl4000 - Support for the vcln4040 proximity and light sensor, including adding DT bindings for this and parts previously supported. Features * core - Allow reading of mount matrices from ACPI in addition to DT. - Common binding for theromcouple types. * ad5933 - Add ABI docs as there are a few 'unsual' elements about this device - perhaps because it's our only impedance analyser. * ad7780 - Add gain and filter gpio support + readback of current gain and filter. * adis16480 - Allow selection fo the dataready pin to be used. - Device tree ID table and binding documentation. - Support external clock modes, including new bindings. * bma180 - Mount matrix support. * bmc150 - Mount matrix support. * bmg160 - Mount matrix support. - DT id table and bindings doc. * bmp280 - Put calibration data into the entropy pool. * hmc5843 - Mount matrix support. * itg3200 - Mount matrix support. * kxcjk1013 - Device tree id table, and binding docs. * lpc32xx - Add scale when regulator specified including DT docs for regulator. * pms7003 - Add device IDs for all supported parts to driver and binding. * stm32-dfsdm - Enable hw consumer support, scan mode control and a complex set of triggered buffer modes. - Power management. * stm32-lptimer-counter - power management. - Document the pinctrl sleep state binding. * ti-ads7950 - GPIO pin support. Cleanups, minor fixes * core - Use bitmap_zalloc to make it explicit that is what we are doing. - Tidy up all the Kconfig files (which had slowly gotten messy) - Fix a forwards definition missing issue in iio/driver.h * ad sigma delta core - Improve handling of SPI bus locking vs CS assertion. This has been wrong a long time so not rushing this in. * ad5064 - Mlock to local lock. * ad5933 (staging cleanup) - Multiline comment fixes. - Include ordering. - SPDX. - Tidy up Kconfig help which was a bit missleading. - Change some non standard attributes to ABI defined ones. * ad7124 - White space fix. * ad7192 - White space. - Use DT clock binding. - Improve error reporting. - Platform data to DT conversion. - Use read_avail callback, mostly to avoid the endless series of patches from new contributors trying to falsely put spaces around the negative sign. * ad7280a - Add brackets to macros to avoid potential precedence isseus. - Add temp vars for event codes to reduce indent and improved readability. - Clean out som CamelCase notation. - White space. * ad7606 - Fix broken file naming in MAINTAINERS. * ad7780 - Missing switch defaults to supress warnings and harden the code slightly. - Set pattern masks more directly. - Add ID values and masks for all supported chips. - SPDX + add Renato as a copyright holder as he has done a lot of work on this driver. - Add brackets to macros to avoid potential precedence issues. * ad7923 - White space fixes. - Use BIT macro to improve readability. - Add brackets to macros to avoid potential precedence issues. - Tidy up a null comparisom. * ad9523 - Fix a typo in naming of variables. * adis16400 - Combine trigger file into main code as no advantage in separate files. Rename core file to just adis16400. - Squash the header into the c file now there is only one file. - Generalize burst mode to support new variants. * ak8975 - Local variable to improve readability around mount matrix support. * as3935 - Avoid potential race by ensuring remove does exact opposite of probe rather than a slightly different order. * cross_ec - Drop some unnecessary includes. - Fix some warning and the slightly 'unusual' code. - Add some docs for non obvious function. - SPDX * hmc5843 - Potential unhandled error case. * iio trigger core - Print an error if there is no available irq due to max consumers per trigger being set to low. * iio loop trigger - Drop an unlikely on IS_ERR as IS_ERR already has the annotation. * ingenic-adc - Drop a redundant dev_err call as devm_ioremap_resource reports the same internally. * lmp91000 - Drop some unncessary parentheses and white space tidy up. - Invert and if statement to improve readability. - Fix a wrong error message. * lpc32xx - Header sorting + drop some unused ones. * mma8542 - Mark a switch fallthrough. * mpu6050 - Add a local variable to improve code readability around mount matrix support. * mxs-lradc-adc - Handle devm_iio_trigger_alloc failure. * sps30 - Fix up a kernel version in the ABI docs. * srf04 - DT binding doc converted to yaml. * ssp_sensors - Supress a clang build warning due to lack of visibility of conditional within a iio_push_to_buffers_with_timestamp. (reasonable false warning!) * st_accel - Drop pointless less than 0 comparisom of unsigned int. * stm32-dfsdm - Improve accuracy of spi_master_frequency calculation. - Improve calculation fo sampling frequency. - Rework various internals to simplify adding triggered buffer support. - Claim direct mode to avoid racing around read_raw and being in buffered mode. * stmpe - Fix a clang false positive warning. * ti-ads7950 - Use local lock rather than using the core mlock when not locking around the device mode. * vcnl4000 - Use word writes instead of byte writes. It seems byte writes are fine for some parts (undocument) but not others that the driver will shortly support. Other * mailmap - Add email address change for Sean Nyekjaer. Update in relevant drivers * tag 'iio-for-5.2a-2' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (129 commits) iio: ad_sigma_delta: Properly handle SPI bus locking vs CS assertion iio: adc: stm32-dfsdm: add PM support iio: adc: stm32-dfsdm: improve sampling frequency accuracy staging: iio: adc: ad7280a: Tab alignment MAINTAINERS: Fix the link to ad7606 dt-bindings iio:temperature: Add MAX31856 thermocouple support iio:temperature:max31856:Add device tree bind info dt-bindings: iio/temperature: Add thermocouple types (and doc) devantech-srf04.yaml: transform DT binding to YAML iio: frequency: ad9523: Fix typo in ad9523_platform_data iio: Make possible to include driver.h first dt-bindings: iio: add Bosch BMG160 gyroscope sensor iio: gyro: bmg160: add device tree compatibility table staging: iio: adc: ad7192: Use read_avail for available attributes dt-bindings: iio: light: add vcnl4040 devicetree bindings iio: light: vcnl4000 add support for the VCNL4040 proximity and light sensor dt-bindings: iio: light: add vcnl4000 devicetree bindings iio: light: vcnl4000 add devicetree hooks iio: light: vcnl4000 use word writes instead of byte writes iio: adc: stm32-dfsdm: claim direct mode for raw read and settings ...

staging: iio: ad5933: change attributes to match ABI

2019-04-04T19:20:31Z

Change device attributes' names to match ABI documentation. Names were chosen such that they tend to be similar to existing ABI so it should be easier to standardize them when necessary. Signed-off-by: Marcelo Schmitt Signed-off-by: Jonathan Cameron

staging: iio: ad5933: change help rule message

2019-04-04T19:20:12Z

Remove the previous comment about direct access via sysfs which would lead one think ad5933 driver has limitations it actually doesn't. Signed-off-by: Marcelo Schmitt Signed-off-by: Jonathan Cameron

staging: iio: ad5933: add SPDX identifier

2019-04-04T19:20:11Z

Add SPDX identifier of GPL-2.0 for the ad5933 driver. Signed-off-by: Marcelo Schmitt Signed-off-by: Jonathan Cameron

staging: iio: ad5933: organize includes

2019-04-04T19:20:09Z

Organize includes to list them in lexicographic order. Signed-off-by: Marcelo Schmitt Signed-off-by: Jonathan Cameron

staging: iio: ad5933: change multi-line comment style

2019-04-04T19:20:08Z

Make multi-line comments compliant with the preferred code style. Signed-off-by: Marcelo Schmitt Signed-off-by: Jonathan Cameron