- 16 Apr, 2019 6 commits
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Nicholas Mc Guire authored
usleep_range() is called in non-atomic context so there is little point in setting min==max as the jitter of hrtimer is determined by interruptions anyway. usleep_range can only perform the intended coalescence if some room for placing the hrtimer is provided. Given the range of milliseconds the delay will be 2+ anyway - so make it 2-2.5 ms which gives hrtimers space to optimize without negatively impacting performance. Signed-off-by:
Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tetsuo Handa authored
Since wilc_set_multicast_list() is called with dev->addr_list_lock spinlock held, we can't use GFP_KERNEL memory allocation. Signed-off-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Fixes: e624c58c ("staging: wilc1000: refactor code to avoid use of wilc_set_multicast_list global") Cc: Ajay Singh <ajay.kathat@microchip.com> Reviewed-by:
Adham Abozaeid <adham.abozaeid@microchip.com> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Nicholas Mc Guire authored
As the expression evaluates to a boolean anyway (relational and logical operators) conversion with the ternary operator is not needed here as coccinelle notes (boolconv.cocci) Signed-off-by:
Julian Calaby <julian.calaby@gmail.com> Signed-off-by:
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Colin Ian King authored
There is a spelling mistake in a dev_error message. Fix it. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Reviewed-by:
Mukesh Ojha <mojha@codeaurora.org> Reviewed-by:
Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
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Hariprasad Kelam authored
changes interupts --> interrupts to fix warning reported by checkpatch tool Signed-off-by:
Hariprasad Kelam <hariprasad.kelam@gmail.com> Reviewed-by:
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YueHaibing authored
Fixes gcc '-Wunused-but-set-variable' warning: drivers/staging/comedi/drivers/dyna_pci10xx.c: In function 'dyna_pci10xx_insn_write_ao': drivers/staging/comedi/drivers/dyna_pci10xx.c:109:21: warning: variable 'range' set but not used [-Wunused-but-set-variable] unsigned int chan, range; drivers/staging/comedi/drivers/dyna_pci10xx.c:109:15: warning: variable 'chan' set but not used [-Wunused-but-set-variable] unsigned int chan, range; They are never used since introduction in commit 16a7373a ("Staging: comedi: add dyna_pci10xx driver") Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Reviewed-by:
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- 04 Apr, 2019 34 commits
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Greg Kroah-Hartman authored
Merge tag 'iio-for-5.2a-2' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next 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 ...
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Lars-Peter Clausen authored
For devices from the SigmaDelta family we need to keep CS low when doing a conversion, since the device will use the MISO line as a interrupt to indicate that the conversion is complete. This is why the driver locks the SPI bus and when the SPI bus is locked keeps as long as a conversion is going on. The current implementation gets one small detail wrong though. CS is only de-asserted after the SPI bus is unlocked. This means it is possible for a different SPI device on the same bus to send a message which would be wrongfully be addressed to the SigmaDelta device as well. Make sure that the last SPI transfer that is done while holding the SPI bus lock de-asserts the CS signal. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Alexandru Ardelean <Alexandru.Ardelean@analog.com> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Fabrice Gasnier authored
Add PM and runtime PM support to STM32 DFSDM drivers: - stm32-dfsdm-core: manage clocks. - stm32-dfsdm-adc: restore channels configuration upon resume. Also stop restart everything in case of buffer mode. Signed-off-by:
Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by:
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Fabrice Gasnier authored
The sample frequency is driven using the oversampling ratio depending on the SPI bus frequency. Currently, oversampling ratio is computed by an entire division: - spi_freq / sample_freq. This may result in inaccurate value. Using DIV_ROUND_CLOSEST improves resulting sample frequency, which is useful for audio that requests fixed rates (such as: 8, 16 or 32 kHz). BTW, introduce new routine to re-factor sample frequency setting, and move frequency accuracy message from warning to debug level. Signed-off-by:
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Cristian Sicilia authored
Aligned some parameters. Signed-off-by:
Cristian Sicilia <sicilia.cristian@gmail.com> Signed-off-by:
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Stefan Popa authored
The devicetree bindings documentation for ad7606 should also include the vendor prefix: ad7606.txt -> adi,ad7606.txt Fixes: 6e33a125 ("dt-bindings: iio: adc: Add docs for AD7606 ADC") Signed-off-by:
Stefan Popa <stefan.popa@analog.com> Reviewed-by:
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Paresh Chaudhary authored
This patch adds support for Maxim MAX31856 thermocouple temperature sensor support. More information can be found in: https://www.maximintegrated.com/en/ds/MAX31856.pdf NOTE: Driver support only Comparator Mode. Signed-off-by:
Paresh Chaudhary <paresh.chaudhary@rockwellcollins.com> Signed-off-by:
Matt Weber <matthew.weber@rockwellcollins.com> Signed-off-by:
Patrick Havelange <patrick.havelange@essensium.com> Signed-off-by:
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Paresh Chaudhary authored
This patch added device tree binding info for MAX31856 driver. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Patrick Havelange authored
This patch introduces common thermocouple types used by various temperature sensors. Also a brief documentation explaining this "thermocouple-type" property. Signed-off-by:
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Andreas Klinger authored
devantech-srf04.yaml: yaml devicetree binding for iio ultrasonic proximity driver of devantech srf04 use devantech-srf04.txt, transform binding into yaml and remove the outdated DT documentation Signed-off-by:
Andreas Klinger <ak@it-klinger.de> Reviewed-by:
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Lars-Peter Clausen authored
Replace diff_{m1,m2} with div_{m1,m2} since they are dividers and not a differential settings. Signed-off-by: -
Andy Shevchenko authored
If we put headers alphabetically sorted in the IIO driver, the compilation will abort because of unknown type to handle. Simple add a forward declaration of opaque struct iio_dev. Suggested-by:
Jonathan Cameron <jic23@kernel.org> Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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H. Nikolaus Schaller authored
Define bindings for "bosch,bmg160" and "bosch,bmi055_gyro". Signed-off-by:
H. Nikolaus Schaller <hns@goldelico.com> Reviewed-by:
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H. Nikolaus Schaller authored
Add of_match_table. Signed-off-by:
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Mircea Caprioru authored
This patch removes the in_voltage-voltage_scale_available and in_voltage_scale_available attributes. These are replaced with available attributes added in info_mask_shared_by_type_available. With this modification the iio core will be responsible with naming the attributes thus removing the checkpatch warning related to in_voltage-voltage_scale_available naming. Signed-off-by:
Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by:
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Angus Ainslie (Purism) authored
Document the vishay VCNL4040 devicetree bindings. Signed-off-by:
Angus Ainslie (Purism) <angus@akkea.ca> Reviewed-by:
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Angus Ainslie (Purism) authored
The VCNL4040 is almost identical to the VCNL4200 as far as register layout goes but just need to check a different ID register location. Signed-off-by:
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Angus Ainslie (Purism) authored
Document the vishay VCNL4000 devicetree bindings. Signed-off-by:
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Angus Ainslie (Purism) authored
Add an of_match table for devicetree probing. Signed-off-by:
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Angus Ainslie (Purism) authored
The VCNL4200 datasheet says that word read and writes should be used to access the registers. Signed-off-by:
Tomas Novotny <tomas@novotny.cz> Signed-off-by:
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Fabrice Gasnier authored
Claim direct mode to ensure no buffer mode is in use for: - single conversion - sample rate setting (must be set when filter isn't enabled). - oversampling ratio (must be set when filter isn't enabled). Signed-off-by:
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Fabrice Gasnier authored
DFSDM conversions can be launched continuously, or using various triggers: - by software - hardware triggers (e.g. like in stm32-adc: TIM, LPTIM, EXTI) - synchronously with DFSDM filter 0. e.g. for filters 1, 2 Launching conversions can be done using two methods: a - injected: - scan mode can be used to convert several channels each time a trigger occurs. - When not is scan mode, channels are converted in sequence, one upon each trigger. b - regular: - supports software triggers or synchronous with filter 0 - single or continuous conversions This patch finalizes DFSDM operating modes using IIO buffer modes: - INDIO_BUFFER_SOFTWARE: regular continuous conversions (no trigger) but limited to 1 channel. Users must set sampling frequency in this case. For filters > 1, conversions can be started synchronously with filter 0. - INDIO_BUFFER_TRIGGERED: triggered conversions uses injected mode for launching conversions. DFSDM can use hardware triggers (e.g. STM32 timer or lptimer), so add INDIO_HARDWARE_TRIGGERED to supported modes. - INDIO_DIRECT_MODE: Only support DMA-based buffer modes. In case no DMA is available, only support single conversions. From userland perspective, to summarize various use cases: 1 - single conversion on any filter: $ cd iio:deviceX $ cat in_voltageY_raw This uses regular a conversion (not continuous) 2 - Using sampling frequency without trigger (single channel, buffer) $ cd iio:deviceX $ echo 100 > sampling_frequency $ echo "" > trigger/current_trigger $ echo 1 > scan_elements/in_voltageY_en $ echo 1 > buffer/enable This uses regular conversion in continuous mode (Frequency is achieved by tuning filter parameters) 3 - sync mode with filter 0: other filters can be converted when using "st,filter0-sync" dt property. The conversions will get started at the same time as filter 0. So for any filters > 1: $ cd iio:deviceX $ echo 100 > sampling_frequency $ echo "" > trigger/current_trigger $ echo 1 > scan_elements/in_voltageY_en $ echo 1 > buffer/enable Then start filter 0 as in 2 above. 4 - Using a hardware trigger (with one channel): - check trigger, configure it: $ cat /sys/bus/iio/devices/trigger1/name tim6_trgo $ echo 100 > /sys/bus/iio/devices/trigger1/sampling_frequency - go to any filter: $ echo 1 > scan_elements/in_voltageY_en $ echo tim6_trgo > trigger/current_trigger $ echo 1 > buffer/enable This uses injected conversion as it uses a hardware trigger (without scan) 5 - Using a hardware trigger (with 2+ channel): Same as in 4/ above, but enable two or more channels in scan_elements. This uses injected conversion as it uses a hardware trigger (with scan mode) Signed-off-by: -
Fabrice Gasnier authored
In order to support multiple channels in buffer mode, add support for scan mode. This is precursor patch to ease support of triggered buffer mode. Currently, only audio uses buffer mode: Regular continuous conversions with a single channel (per filter). DFSDM hardware supports scan mode (only) with injected conversions. Conversions can be launched by software (JSWSTART), trigger or synchronously with filter 0 (e.g. JSYNC). Continuous conversion mode isn't available for injected. Signed-off-by:
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Fabrice Gasnier authored
Optionally enable IIO hw consumer, when provided (e.g. for DFSDM_IIO type). This is precursor patch to introduce buffer modes. Signed-off-by:
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Fabrice Gasnier authored
Move DMA slave configuration to start routine: depending on regular or injected mode is in use, DMA needs to read resp. RDATAR or JDATAR. This is precursor patch to introduce injected mode (used for scan). Signed-off-by:
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Fabrice Gasnier authored
Move DMA enable (e.g. set RDMAEN bit) away from start_conv() that is used for both buffer and single conversions. Thus, single conv rely on interrupt, not dma. Note: take care to prepare all DMA stuff and set RDMAEN before starting filter (can be set only when DFEN=0). This is precursor patch to ease support of triggered buffer mode. Signed-off-by:
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Fabrice Gasnier authored
DFSDM regular continuous mode usage depends on current mode (not DMA): - for single conversion, RCONT doesn't need to be set. - for buffer mode, RCONT has to be set (e.g. INDIO_BUFFER_SOFTWARE used by audio currently). This is related to filter configuration, move it to relevant routine. This is precursor patch to ease support of triggered buffer mode. Signed-off-by:
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Fabrice Gasnier authored
Current ckout divider may be set to a value that makes ckout to exceed spi-max-frequency. Rather use lower value (e.g. round up divider when ckout isn't accurate). Also when the SPI clock isn't accurate, 'spi_master_freq' is filled in with expected frequency. Use computed value instead to be more accurate: - e.g. source clock / (CKOUTDIV + 1) Enforce checks on the divider: ckoutdiv range can be from 1-255 to provide divider of 2-256. Signed-off-by:
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Marcelo Schmitt authored
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 <marcelo.schmitt1@gmail.com> Signed-off-by:
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Vladimir Petrigo authored
- Fix CHECK Macro argument 'wordsize' may be better as '(wordsize)' to avoid precedence issues Slightly modified by Jonathan to take into account the staging graduation and a copy and paste version of the same item on the following line. Signed-off-by:
Vladimir Petrigo <vladimir.petrigo@gmail.com> Signed-off-by:
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Alexandru Ardelean authored
Final part of the re-organization. Move the `adis16400.h` into `adis16400.c` since it no longer needs to be shared among other files. Signed-off-by:
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Alexandru Ardelean authored
This change does a simple 1-to-1 rename of the adis16400_core.c file. Now that the `adis16400_buffer.c` file was removed, everything can be moved into a single driver file. But first, this rename. Signed-off-by:
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Alexandru Ardelean authored
This change has been done separately, so that it's easier to visualize the changed logic in the adis_scan_update() function. Most of the function in this `adis16400_update_scan_mode()` that deals with burst-mode will be re-used in the ADIS16480, but with different parameters. Signed-off-by:
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Alexandru Ardelean authored
Some variants in the ADIS16400 family support burst mode. This mechanism is implemented in the `adis16400_buffer.c` file. Some variants in ADIS16480 are also adding burst mode, which is functionally similar to ADIS16400, but with different parameters. To get there, a `adis_burst` struct is added to parametrize certain bits of the SPI communication to setup: the register that triggers burst-mode, and the extra-data-length that needs be accounted for when building the bust-length buffer. The trigger handler cannot be made generic, since it's very specific to each ADIS164XX family. A future enhancement of this `adis_burst` mode will be the possibility to enable/disable burst-mode. For the ADIS16400 family it's hard-coded to on by default. But for ADIS16480 there will be a need to disable this. When that will be implemented, both ADIS16400 & ADIS16480 will have the burst-mode enable-able/disable-able. Signed-off-by:
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