summaryrefslogtreecommitdiff
path: root/drivers/iio/accel/bmc150-accel-core.c
AgeCommit message (Collapse)AuthorFilesLines
2022-04-10iio: core: Hide read accesses to iio_dev->currentmodeMiquel Raynal1-2/+2
In order to later move this variable within the opaque structure, let's create a helper for accessing it in read-only mode. This helper will be exposed to device drivers and kept accessible for the few that could need it. The write access to this variable however should be fully reserved to the core so in a second step we will hide this variable into the opaque structure. Cc: Eugen Hristev <eugen.hristev@microchip.com> Cc: Nicolas Ferre <nicolas.ferre@microchip.com> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/r/20220207143840.707510-11-miquel.raynal@bootlin.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-03-18Merge tag 'iio-for-5.18a' of ↵Greg Kroah-Hartman1-4/+4
https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next Jonathan writes: First set of new device support, fixes, cleanups and features for IIO in 5.18 This cycle we had quite a few series that applied similar changes to lots of drivers. To keep this description manageable I have called those out in their own section rather than per driver. Particularly pleased to see the long running AFE precision series going in this cycle. Series includes some late breaking fixes. New device support * adi,ada4250 amplifier - New driver and dt bindings for this programmable gain amplifier. * adi,admv1014 microwave down-converter - New driver, dt bindings and some device specific ABI that may be generalized as more drivers for devices similar to this are added. * adi,admv4420 K Band down-converter. - New driver and dt bindings. * adi,adxl367 accelerometer driver. - New driver, dt-bindings + some new IIO ABI definitions to support reference magnitude events where an estimate of the acceleration due to gravity has been removed. - A few fixes as follow up patches. * adi,ltc2688 DAC with toggle and dither modes. - New driver and bindings. Includes some new driver specific (for now) ABI for handling toggle mode and the addition of a dither waveform to the DAC output. * AFE (analog front end) add support for additional types of analog device in front of an ADC. - RTD temperature sensors with dt bindings. - Temperature transducers wit dt bindings. - Related cleanup and features listed in other sections below. * maxim,ds3502 potentiometer. - Add support to ds1803 driver which required significant rework. * mediatek,mt2701-auxadc driver - Add mediatek,mt8186-auxadc - id table and chip specific info only. * semtech,sx9324, semtech,ax9360 - Substantial refactoring of sx9310 to extract core logic for reuse into a separate module - New driver using this supporting sx9324 proximity sensors. - New driver using this supporting sx9360 proximity sensors. * silan,sc7a20 - Compatible with the st,lis2dh (or nearly anyway) so add ID and chip specific info to enable support. Also silan vendor ID added for dt-bindings. Staging graduation * adi,ad7280a monitoring ADC for stacked lithium-ion batteries in electric cars and similar. - Substantial rework of driver required to bring inline with current IIO best practice. An unusual device in IIO so some interesting features we may see more of in future. Multiple driver/core cleanup - Use sysfs_emit() in simple locations where there is no path to change to various core created attributes. - Trivial white space fixes around inconsistency between space after { and before } in id tables. - Introduce new handling for fractional types to avoid repeated similar implementations. Use this in 3 drivers. Note this is also targeted at future use in the AFE driver and was motivated by discussions around the precision related work on that driver. - of related header cleanups - drop of*.h and add mod_devicetable.h as appropriate. - Move a number of symbol exports into IIO_* namespaces. Two categories, 1) Library used by multiple drivers e.g. st_sensors 2) Core driver module exporting functions used by bus specific modules. A few related cleanups in this set. - Switch from CONFIG_PM_* guards to new DEFINE_SIMPLE_DEV_PM_OPS() and similar to simplify drivers and take advantage of these new macros allowing the compiler to do the job or removing unused code without the need for __maybe_unused markings. Conversion of other drivers to these new macros ongoing. Features * adi,adf4350 - Switch from of specific to generic device properties enabling use with other firmware types. * adi,adx345 - Switch from of specific to generic device properties. - Add ACPI ID ADS0345 - Related driver cleanup. * adi,hmc425a - Switch from of specific to generic device properties. * afe analog rescaler driver - Wider range of types supported for scale. - Support offset. - Kunit tests. * atlas,ezo-sensor - Convert from of to device properties. * fsl,mma8452 - Support mount matrix. * infineon,dps310: - Add ACPI ID IFX3100. * invensense,mpu6050 - Convert to generic device properties. * maxim,ds1803 - Add out_raw_available before supporting more devices. - Convert from of specific to device properties. * samsung,ssp_sensors - Convert from of specific to device properties. * st,stm32-timer trigger - Convert from of specific to device properties. * ti,hdc101x - Add ACPI ID TXNW1010. * ti,tsc2046: - Add read_raw support to enable use of iio_hwmon and similar. Fixes / cleanup. * mailmap - Update for Cai Huoqing * MAINTAINERS - Fix Analog Devices related links. - Add entry for ADRF6780 - Add entry for ADMV1013 - Add entry for AD7293 - Add entry for ADMV8818 - Update files listed for adis-lib * iio core: - Fix wrong comment about current_mode being something a driver should ever access. - Use struct_size() rather than open coding in industrialio-hw-consumer * adi,axl355 - Use units.h definitions instead of local versions. * adi,adis-lib - Simplify *updated_bits() macro - Whitespace cleanup. * afe - Note many of these fixes only apply to particular configurations so the problems have probably not been seen in the wild, but will be visible with new usecases enabled this cycle. - Fix application of consumer scale for IIO_VAL_INT. - Apply a scale of 1 when no scale is provided. - Make best effort to establish a valid offset value for fractional cases. - Use s64 for scale calculations where parameters may be signed. - Tidy up include order. - Improve accuracy for small fractional sales - Reduce risk of integer overflow. * ams,as3935 - Use devm_delayed_work_autocancel() to replace open coded equivalent. * aspeed,adc - Fix wrong use of divider flag. * atmel,sama5d2-adc - Relax atmel,trigger-edge-type to optional. - Drop Ludovic Desroches from listed maintainers of the dt-binding inline with previous MAINTAINERS entry update. * fsl,mma8452 - Fix probing when i2c_device_id used. - dev_get_drvdata() on the iio_dev->dev, no longer returns iio_dev. Use dev_to_iio_dev() instead. Note the original path in here worked more by luck than design. * invensense,mpu6050 - Drop ACPI_PTR() protection to avoid an unused warning. - Use fact ACPI_COMPANION() returns null when ACPI_HANDLE() does to simplify handling. * motorola,cpcap-adc - Drop unused assignment. * qcom,spmi-adc - Fix wrong example of 'reg' in binding document. * renesas,rzg2l-adc - Trivial typo fix. * semtech,sx9360 - Fix wrong register handling for event generation. * st_sensors - Allow manual disabling of I2C or SPI module if not needed for a particular board. Default is still to enable the bus specific module if appropriate bus is supported. * st,lsm6dsx - dev_get_drvdata() on the iio_dev->dev, no longer returns iio_dev. Use dev_to_iio_dev() instead. * ti,palmas-gpadc - Split the interrupt fields in the dt-binding example * ti,tsc2046 - Rework state machine to improve readability after recent debugging of an issue fixed elsewhere. - Add a sanity check to avoid very large memory allocations if a crazy delay is specified. * ti,twl6030 - Add error handling if devm_request_threaded_irq() fails. * xilinx,ams - Use devm_delayed_work_autocancel() instead of open coding equivalent. - Fix missing required clock entry in dt-binding. - Fix miss counting of channels resulting in ps channels not being enabled. - Fix incorrect values written to sequencer registers. - Fix sequence for single channel reading. * tag 'iio-for-5.18a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (245 commits) iio: adc: xilinx-ams: Fix single channel switching sequence iio: adc: xilinx-ams: Fixed wrong sequencer register settings iio: adc: xilinx-ams: Fixed missing PS channels dt-bindings: iio: adc: zynqmp_ams: Add clock entry iio: accel: mma8452: use the correct logic to get mma8452_data iio: adc: aspeed: Add divider flag to fix incorrect voltage reading. iio: imu: st_lsm6dsx: use dev_to_iio_dev() to get iio_dev struct dt-bindings: iio: Add ltc2688 documentation iio: ABI: add ABI file for the LTC2688 DAC iio: dac: add support for ltc2688 dt-bindings: iio: afe: add bindings for temperature transducers dt-bindings: iio: afe: add bindings for temperature-sense-rtd iio: afe: rescale: add temperature transducers iio: afe: rescale: add RTD temperature sensor support iio: test: add basic tests for the iio-rescale driver iio: afe: rescale: reduce risk of integer overflow iio: afe: rescale: fix accuracy for small fractional scales iio: afe: rescale: add offset support iio: afe: rescale: add INT_PLUS_{MICRO,NANO} support iio: afe: rescale: expose scale processing function ...
2022-02-18iio:accel:bmc150: Move exports into IIO_BMC150 namespaceJonathan Cameron1-4/+4
To avoid unnecessary pollution of the global symbol namespace move the driver core exports into their own namespace and import that into the two bus modules. For more info see https://lwn.net/Articles/760045/ Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20220116180535.2367780-10-jic23@kernel.org
2022-01-30iio: Fix error handling for PMMiaoqian Lin1-1/+4
The pm_runtime_enable will increase power disable depth. If the probe fails, we should use pm_runtime_disable() to balance pm_runtime_enable(). In the PM Runtime docs: Drivers in ->remove() callback should undo the runtime PM changes done in ->probe(). Usually this means calling pm_runtime_disable(), pm_runtime_dont_use_autosuspend() etc. We should do this in error handling. Fix this problem for the following drivers: bmc150, bmg160, kmx61, kxcj-1013, mma9551, mma9553. Fixes: 7d0ead5c3f00 ("iio: Reconcile operation order between iio_register/unregister and pm functions") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20220106112309.16879-1-linmq006@gmail.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-21iio:accel:bmc150: Mark structure __maybe_unused as only needed with for pm ops.Jonathan Cameron1-1/+1
If CONFIG_PM not set then clang warns this structure is unused. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-12-jic23@kernel.org
2021-10-19iio: accel: bmc150: Make bmc150_accel_core_remove() return voidUwe Kleine-König1-3/+1
Up to now bmc150_accel_core_remove() returns zero unconditionally. Make it return void instead which makes it easier to see in the callers that there is no error to handle. Also the return value of i2c and spi remove callbacks is ignored anyway. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com> Link: https://lore.kernel.org/r/20211013203223.2694577-3-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-10-19iio: triggered-buffer: extend support to configure output buffersAlexandru Ardelean1-0/+1
Now that output (kfifo) buffers are supported, we need to extend the {devm_}iio_triggered_buffer_setup_ext() parameter list to take a direction parameter. This allows us to attach an output triggered buffer to a DAC device. Unfortunately it's a bit difficult to add another macro to avoid changing 5 drivers where {devm_}iio_triggered_buffer_setup_ext() is used. Well, it's doable, but may not be worth the trouble vs just updating all these 5 drivers. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Mihail Chindris <mihail.chindris@analog.com> Link: https://lore.kernel.org/r/20211007080035.2531-4-mihail.chindris@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-08-08iio: accel: bmc150: Add support for BMC156Stephan Gerhold1-3/+6
BMC156 is another accelerometer that works just fine with the bmc150-accel driver. It's very similar to BMC150 (also a accelerometer + magnetometer combo) but with only one accelerometer interrupt pin. It would make sense if only INT1 was exposed but someone at Bosch decided to only have an INT2 pin. Try to deal with this by making use of the INT2 support introduced in the previous commit and force using INT2 for BMC156. To detect that we need to bring up a simplified version of the previous type IDs. Note that unlike the type IDs removed in commit c06a6aba6835 ("iio: accel: bmc150: Drop misleading/duplicate chip identifiers") here I only add one for the special case of BMC156. Everything else still happens by reading the CHIP_ID register since the chip type information often is not accurate in ACPI tables. Tested-by: Nikita Travkin <nikita@trvn.ru> # BMC156 Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20210802155657.102766-5-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-08-08iio: accel: bmc150: Make it possible to configure INT2 instead of INT1Stephan Gerhold1-12/+59
Some Bosch accelerometers have two interrupt pins (INT1 and INT2). At the moment, the driver uses only the first one, which is fine for most situations. However, some boards might only have INT2 connected for some reason. Add the necessary bits and configuration to set up INT2. Then try to detect this situation at least for device tree setups by checking if the first interrupt (the one picked by the I2C/SPI core) is actually named "INT2" using the interrupt-names property. of_irq_get_byname() returns either 0 or some error code in case the driver probed without device tree, so in all other cases we fall back to configuring INT1 as before. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20210802155657.102766-4-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-16iio: accel: bmc150: Use more consistent and accurate scale valuesStephan Gerhold1-22/+24
It is quite strange that BMA222 and BMA222E have very close, yet subtly different values in their scale tables. Comparing the datasheets this is simply because the "Resolution" for the different measurement ranges are documented with different precision. For example, for +-2g the BMA222 datasheet [1] suggests a resolution of 15.6 mg/LSB, while the BMA222E datasheet [2] suggests 15.63 mg/LSB. Actually, there is no need to rely on the resolution given by the Bosch datasheets. The resolution and scale can be calculated more consistently and accurately using the range (e.g. +-2g) and the channel size (e.g. 8 bits). Distributing 4g (-2g to 2g) over 8 bits results in an exact resolution of (4g / 2^8) = 15.625 mg/LSB which is the same value as in both datasheets, just slightly more accurate. Multiplying g = 9.80665 m/s^2 we get a more accurate value for the IIO scale table. Generalizing this we can calculate the scale tables more accurately using (range / 2^bits) * g * 10^6 (because of IIO_VAL_INT_PLUS_MICRO). Document this and make the scale tables more consistent and accurate for all the variants using that formula. Now the scale tables for BMA222 and BMA222E are consistent and probably slightly more accurate. [1]: https://media.digikey.com/pdf/Data%20Sheets/Bosch/BMA222.pdf [2]: https://www.mouser.com/datasheet/2/783/BST-BMA222E-DS004-06-1021076.pdf Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Andy Shevchenko <andy.shevchenko@gnail.com> Link: https://lore.kernel.org/r/20210611182442.1971-1-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-13iio: accel: bma180/bmc150: Move BMA254 to bmc150-accel driverStephan Gerhold1-1/+1
Commit c1d1c4a62db5 ("iio: accel: bma180: BMA254 support") added BMA254 support to the bma180 driver and changed some naming to BMA25x to make it easier to add support for BMA253 and BMA255. Unfortunately, there is quite some overlap between the bma180 driver and the bmc150-accel driver. Back when the commit was made, the bmc150-accel driver actually already had support for BMA255, and adding support for BMA254 would have been as simple as adding a new compatible to bmc150-accel. The bmc150-accel driver is a bit better for BMA254 since it also supports the motion trigger/interrupt functionality. Fortunately, moving BMA254 support over to bmc150-accel is fairly simple because the drivers have compatible device tree bindings. Revert most of the changes for BMA254 support in bma180 and move BMA254 over to bmc150-accel. This has the following advantages: - Support for motion trigger/interrupt - Fix incorrect scale values (BMA254 currently uses the same as BMA250 but actually they're different because of 10 vs 12 bits data size) - Less code than before :) BMA250 could be potentially also moved but it's more complicated because its chip_id conflicts with the one for BMA222 in bmc150-accel. Perhaps there are also other register differences, I did not investigate further yet (and I have no way to test it). Cc: Peter Meerwald <pmeerw@pmeerw.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20210611080903.14384-11-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-13iio: accel: bmc150: Add device IDs for BMA253Stephan Gerhold1-1/+1
BMA253 is mostly like BMA255 and has exactly the same register layout as used by the bmc150-accel driver as far I can tell. Making it work is as simple as adding new device IDs for it since it has the same chip_id = 0xFA (250) as BMA255 and others. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20210611080903.14384-8-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-13iio: accel: bmc150: Sort all chip names alphabetically / by chip IDStephan Gerhold1-20/+20
Right now all the device IDs are listed in seemingly random order, make this consistent by ordering those alphabetically. Also, order bmc150_accel_chip_info_tbl by chip ID for the same reason. Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20210611080903.14384-6-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-13iio: accel: bmc150: Drop duplicated documentation of supported chipsStephan Gerhold1-9/+1
The chips supported by the bmc150-accel driver are clearly documented in Kconfig, in the bmc150_accel_chip_info_tbl as well as in all the device ID tables in the I2C/SPI drivers. It's easy to forget to update the lists in the file header. Drop those entirely to reduce the amount of changes required to add new chip variants. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20210611080903.14384-5-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-13iio: accel: bmc150: Drop misleading/duplicate chip identifiersStephan Gerhold1-27/+7
Commit 0ad4bf370176 ("iio:accel:bmc150-accel: Use the chip ID to detect sensor variant") stopped using the I2C/ACPI match data to look up the bmc150_accel_chip_info. However, the bmc150_accel_chip_info_tbl remained as-is, with multiple entries with the same chip_id (e.g. 0xFA for BMC150/BMI055/BMA255). This is redundant now because actually the driver will always select the first entry with a matching chip_id. So even if a device probes e.g. with BMA0255 it will end up using the chip_info for BMC150. And in general that's fine for now, the entries for BMC150/BMI055/BMA255 were exactly the same anyway (except for the name, which is replaced with the more accurate one later). But in this case it's misleading because it suggests that one should add even more entries with the same chip_id when adding support for new variants. Let's make that more clear by removing the enum with the chip identifiers entirely and instead have only one entry per chip_id. Note that we may need to bring back some mechanism to differentiate between different chips with the same chip_id in the future. For example, BMA250 (currently supported by the bma180 driver) has the same chip_id = 0x03 as BMA222 even though they have different channel sizes (8 bits vs 10 bits). But in any case, that mechanism would need to look quite different from what we have right now. Cc: Bastien Nocera <hadess@hadess.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20210611080903.14384-4-stephan@gerhold.net Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-13iio: accel: bmc150: Fix bma222 scale unitStephan Gerhold1-4/+5
According to sysfs-bus-iio documentation the unit for accelerometer values after applying scale/offset should be m/s^2, not g, which explains why the scale values for the other variants in bmc150-accel do not match exactly the values given in the datasheet. To get the correct values, we need to multiply the BMA222 scale values by g = 9.80665 m/s^2. Fixes: a1a210bf29a1 ("iio: accel: bmc150-accel: Add support for BMA222") Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20210611080903.14384-2-stephan@gerhold.net Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-09iio: accel: bmc150: Set label based on accel-location for ACPI DUAL250E fwnodesHans de Goede1-0/+16
Some Yoga laptops with 1 accelerometer in the display and 1 in the base, use an ACPI HID of DUAL250E instead of BOSC0200. Set the iio-device's label for DUAL250E devices to a value indicating which sensor is which, mirroring how we do this for BOSC0200 dual sensor devices. Note the DUAL250E fwnode unfortunately does not include a mount-matrix. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20210523170103.176958-10-hdegoede@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-09iio: accel: bmc150: Refactor bmc150_apply_acpi_orientation()Hans de Goede1-5/+13
Factor the BOSC0200 ACPI HID handling out into a new bmc150_apply_bosc0200_acpi_orientation() function and make bmc150_apply_acpi_orientation() call that when dealing with a BOSC0200 ACPI device (and make it return false otherwise). This is a preparation patch for adding special handling for other ACPI HIDs (the "DUAL250E" HID). Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20210523170103.176958-9-hdegoede@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-09iio: accel: bmc150: Add support for DUAL250E ACPI DSM for setting the hinge ↵Hans de Goede1-0/+3
angle Some 360 degree hinges (yoga) style 2-in-1 devices use 2 bmc150 accels to allow the OS to determine the angle between the display and the base of the device, so that the OS can determine if the 2-in-1 is in laptop or in tablet-mode. On Windows both accelerometers are read (polled) by a special service and this service calls the DSM (Device Specific Method), which in turn translates the angles to one of laptop/tablet/tent/stand mode and then notifies the EC about the new mode and the EC then enables or disables the builtin keyboard and touchpad based in the mode. When the 2-in-1 is powered-on or resumed folded in tablet mode the EC senses this independent of the DSM by using a HALL effect sensor which senses that the keyboard has been folded away behind the display. At power-on or resume the EC disables the keyboard based on this and the only way to get the keyboard to work after this is to call the DSM to re-enable it. Call the DSM on probe() and resume() to fix the keyboard not working when powered-on / resumed in tablet-mode. This patch was developed and tested on a Lenovo Yoga 300-IBR. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20210523170103.176958-8-hdegoede@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-09iio: accel: bmc150: Remove bmc150_set/get_second_device() accessor functionsHans de Goede1-16/+0
Now that the definition of the bmc150_accel_data struct is no longer private to bmc150-accel-core.c, bmc150-accel-i2c.c can simply directly access the second_dev member and the accessor functions are no longer necessary. Note if the i2c_acpi_new_device() for the second-client now fails, an ERR_PTR gets stored in data->second_dev this is fine since it is only ever passed to i2c_unregister_device() which has an IS_ERR_OR_NULL() check. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20210523170103.176958-7-hdegoede@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-09iio: accel: bmc150: Move struct bmc150_accel_data definition to bmc150-accel.hHans de Goede1-53/+0
Further patches to bmc150-accel-i2c.c need to store some extra info (on top of the second_dev pointer) in the bmc150_accel_data struct, rather then adding yet more accessor functions for this lets just move the struct bmc150_accel_data definition to bmc150-accel.h. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20210523170103.176958-6-hdegoede@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-09iio: accel: bmc150: Don't make the remove function of the second ↵Hans de Goede1-2/+2
accelerometer unregister itself On machines with dual accelerometers described in a single ACPI fwnode, the bmc150_accel_probe() instantiates a second i2c-client for the second accelerometer. A pointer to this manually instantiated second i2c-client is stored inside the iio_dev's private-data through bmc150_set_second_device(), so that the i2c-client can be unregistered from bmc150_accel_remove(). Before this commit bmc150_set_second_device() took only 1 argument so it would store the pointer in private-data of the iio_dev belonging to the manually instantiated i2c-client, leading to the bmc150_accel_remove() call for the second_dev trying to unregister *itself* while it was being removed, leading to a deadlock and rmmod hanging. Change bmc150_set_second_device() to take 2 arguments: 1. The i2c-client which is instantiating the second i2c-client for the 2nd accelerometer and 2. The second-device pointer itself (which also is an i2c-client). This will store the second_device pointer in the private data of the iio_dev belonging to the (ACPI instantiated) i2c-client for the first accelerometer and will make bmc150_accel_remove() unregister the second_device i2c-client when called for the first client, avoiding the deadlock. Fixes: 5bfb3a4bd8f6 ("iio: accel: bmc150: Check for a second ACPI device for BOSC0200") Cc: Jeremy Cline <jeremy@jcline.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-09iio: accel: bmc150: Fix dereferencing the wrong pointer in ↵Hans de Goede1-7/+3
bmc150_get/set_second_device The drvdata for iio-parent devices points to the struct iio_dev for the iio-device. So by directly casting the return from i2c_get_clientdata() to struct bmc150_accel_data * the code was ending up storing the second_dev pointer in (and retrieving it from) some semi-random offset inside struct iio_dev, rather then storing it in the second_dev member of the bmc150_accel_data struct. Fix the code to get the struct bmc150_accel_data * pointer to call iio_priv() on the struct iio_dev * returned by i2c_get_clientdata(), so that the correct pointer gets dereferenced. This fixes the following oops on rmmod, caused by trying to dereference the wrong return of bmc150_get_second_device(): [ 238.980737] BUG: unable to handle page fault for address: 0000000000004710 [ 238.980755] #PF: supervisor read access in kernel mode [ 238.980760] #PF: error_code(0x0000) - not-present page ... [ 238.980841] i2c_unregister_device.part.0+0x19/0x60 [ 238.980856] 0xffffffffc0815016 [ 238.980863] i2c_device_remove+0x25/0xb0 [ 238.980869] __device_release_driver+0x180/0x240 [ 238.980876] driver_detach+0xd4/0x120 [ 238.980882] bus_remove_driver+0x5b/0xd0 [ 238.980888] i2c_del_driver+0x44/0x70 While at it also remove the now no longer sensible checks for data being NULL, iio_priv never returns NULL for an iio_dev with non 0 sized private-data. Fixes: 5bfb3a4bd8f6 ("iio: accel: bmc150: Check for a second ACPI device for BOSC0200") Cc: Jeremy Cline <jeremy@jcline.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-06-03iio: Drop Duplicated "mount-matrix" parameterAndy Shevchenko1-2/+1
All of the users of iio_read_mount_matrix() are using the very same property name. Moreover, the property name is hard coded in the API documentation. Make this clear and avoid duplication now and in the future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Sean Nyekjaer <sean@geanix.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20210518112546.44592-1-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-05-17iio: accel: bmc150-accel: Balanced runtime pm + use pm_runtime_resume_and_get()Jonathan Cameron1-5/+1
A call to pm_runtime_put_noidle() doesn't match any call that would result in a get(). It is safe because runtime pm core protects against the reference counter going 0, but it makes it harder to understand the code. Whilst here use pm_runtime_resume_and_get() to tidy things up. The Coccinelle script didn't get this one due to more complex code structure. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/20210509113354.660190-5-jic23@kernel.org
2021-05-17iio: core: move @id from struct iio_dev to struct iio_dev_opaqueJonathan Cameron1-2/+2
Continuing from Alexandru Ardelean's introduction of the split between driver modifiable fields and those that should only be set by the core. This could have been done in two steps to make the actual move after introducing iio_device_id() but there seemed limited point to that given how mechanical the majority of the patch is. Includes fixup from Alex for missing mxs-lradc-adc conversion. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com> Link: https://lore.kernel.org/r/20210426174911.397061-2-jic23@kernel.org
2021-03-25iio: fix devm_iio_trigger_alloc with parent.cocciGwendal Grignou1-1/+0
Use cocci semantic patch: @@ expression trigger, P; @@ trigger = devm_iio_trigger_alloc(P, ...); ... - trigger->dev.parent = P; To remove trigger->dev.parent, since it is set by default. Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20210309193620.2176163-3-gwendal@chromium.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-03-11iio: accel: bmc150: Set label based on accel-location on 2-accel yoga-style ↵Hans de Goede1-6/+12
2-in-1s Some 2-in-1 laptops / convertibles with 360° (yoga-style) hinges, use 2 bmc150 accelerometers, defined by a single BOSC0200 ACPI device node (1 in their base and 1 in their display). Since in this case we know the location of each accelerometer, set the label for the accelerometers to the standardized "accel-display" resp. "accel-base" labels. This way userspace can use the labels to get the location. This was tested on a Lenovo ThinkPad Yoga 11e 4th gen (N3450 CPU). Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210207160901.110643-3-hdegoede@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-12-03iio: accel: bmc150: Get mount-matrix from ACPIHans de Goede1-4/+104
bmc150 accelerometers with an ACPI hardware-id of BOSC0200 have an ACPI method providing their mount-matrix, add support for retrieving this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20201130141954.339805-3-hdegoede@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-12-03iio: accel: bmc150: Check for a second ACPI device for BOSC0200Jeremy Cline1-0/+21
Some BOSC0200 acpi_device-s describe two accelerometers in a single ACPI device. Normally we would handle this by letting the special drivers/platform/x86/i2c-multi-instantiate.c driver handle the BOSC0200 ACPI id and let it instantiate 2 bmc150_accel type i2c_client-s for us. But doing so changes the modalias for the first accelerometer (which is already supported and used on many devices) from acpi:BOSC0200 to i2c:bmc150_accel. The modalias is not only used to load the driver, but is also used by hwdb matches in /lib/udev/hwdb.d/60-sensor.hwdb which provide a mountmatrix to userspace by setting the ACCEL_MOUNT_MATRIX udev property. Switching the handling of the BOSC0200 over to i2c-multi-instantiate.c will break the hwdb matches causing the ACCEL_MOUNT_MATRIX udev prop to no longer be set. So switching over to i2c-multi-instantiate.c is not an option. Changes by Hans de Goede: -Add explanation to the commit message why i2c-multi-instantiate.c cannot be used -Also set the dev_name, fwnode and irq i2c_board_info struct members for the 2nd client Signed-off-by: Jeremy Cline <jeremy@jcline.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20201130141954.339805-2-hdegoede@redhat.com BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=198671 Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-12-03iio: accel: bmc150: Removed unused bmc150_accel_dat irq memberHans de Goede1-5/+2
The bmc150_accel_dat struct irq member is only ever used inside bmc150_accel_core_probe, drop it and just use the function argument directly. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20201130141954.339805-1-hdegoede@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-12-03iio:trigger: rename try_reenable() to reenable() plus return voidJonathan Cameron1-8/+4
As we no longer support a try again if we cannot reenable the trigger rename the function to reflect this. Also we don't do anything with the value returned so stop it returning anything. For the few drivers that didn't already print an error message in this patch, add such a print. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Christian Oder <me@myself5.de> Cc: Eugen Hristev <eugen.hristev@microchip.com> Cc: Nishant Malpani <nish.malpani25@gmail.com> Cc: Daniel Baluta <daniel.baluta@oss.nxp.com> Link: https://lore.kernel.org/r/20200920132548.196452-3-jic23@kernel.org
2020-12-03iio: accel: bmc150-accel: Add rudimentary regulator supportLinus Walleij1-2/+33
These Bosch accelerometers have two supplies, VDD and VDDIO. Add some rudimentary support to obtain and enable these regulators during probe() and disable them during remove() or on the errorpath. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20201115205745.618455-3-linus.walleij@linaro.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-12-03iio: accel: bmc150-accel: Add support for BMA222Linus Walleij1-0/+15
This adds support for the BMA222 version of this sensor, found in for example the Samsung GT-I9070 mobile phone. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20201115205745.618455-2-linus.walleij@linaro.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-11-21iio: accel: bmc150: use iio_triggered_buffer_setup_ext()Alexandru Ardelean1-11/+14
This change switches to the new iio_triggered_buffer_setup_ext() function and removes the iio_buffer_set_attrs() call, for assigning the HW FIFO attributes to the buffer. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20200929125949.69934-6-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-08-22iio:accel:bmc150-accel: Fix timestamp alignment and prevent data leak.Jonathan Cameron1-3/+12
One of a class of bugs pointed out by Lars in a recent review. iio_push_to_buffers_with_timestamp assumes the buffer used is aligned to the size of the timestamp (8 bytes). This is not guaranteed in this driver which uses a 16 byte array of smaller elements on the stack. As Lars also noted this anti pattern can involve a leak of data to userspace and that indeed can happen here. We close both issues by moving to a suitable structure in the iio_priv() data with alignment ensured by use of an explicit c structure. This data is allocated with kzalloc so no data can leak appart from previous readings. Fixes tag is beyond some major refactoring so likely manual backporting would be needed to get that far back. Whilst the force alignment of the ts is not strictly necessary, it does make the code less fragile. Fixes: 3bbec9773389 ("iio: bmc150_accel: add support for hardware fifo") Reported-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: <Stable@vger.kernel.org>
2020-06-20iio: Move attach/detach of the poll func to the coreLars-Peter Clausen1-2/+2
All devices using a triggered buffer need to attach and detach the trigger to the device in order to properly work. Instead of doing this in each and every driver by hand move this into the core. At this point in time, all drivers should have been resolved to attach/detach the poll-function in the same order. This patch removes all explicit calls of iio_triggered_buffer_postenable() & iio_triggered_buffer_predisable() in all drivers, since the core handles now the pollfunc attach/detach. The more peculiar change is for the 'at91-sama5d2_adc' driver, since it's not immediately obvious that removing the hooks doesn't break anything. Eugen was able to test on at91-sama5d2-adc driver, sama5d2-xplained board. All seems to be fine. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Tested-by: Eugen Hristev <eugen.hristev@microchip.com> #for at91-sama5d2-adc Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-06-14iio: remove explicit IIO device parent assignmentAlexandru Ardelean1-1/+0
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 <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-09-08iio: fix center temperature of bmc150-accel-corePascal Bouwmann1-1/+1
The center temperature of the supported devices stored in the constant BMC150_ACCEL_TEMP_CENTER_VAL is not 24 degrees but 23 degrees. It seems that some datasheets were inconsistent on this value leading to the error. For most usecases will only make minor difference so not queued for stable. Signed-off-by: Pascal Bouwmann <bouwmann@tau-tec.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288Thomas Gleixner1-9/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 263 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.208660670@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-22iio:accel:Switch hardcoded function name with a reference to __func__ making ↵Mohan Kumar1-1/+1
the code more maintainable It fixes the following checkpatch.pl warning: WARNING: Prefer using '"%s...", __func__' to using function's name, in a string Signed-off-by: Mohan Kumar <mohankumar718@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-04-04iio: accel: bmc150: add mount matrix supportH. Nikolaus Schaller1-0/+21
This patch allows to read a mount-matrix device tree property and report to user-space or in-kernel iio clients. Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-04-28iio: accel: bcm150: Remove handling for regmap raw_read_maxCharles Keepax1-20/+3
The regmap core now handles splitting up transactions according to max_raw_read, so this code is no longer required in client drivers. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-02-24iio: accel: bmc150: Remove redundant __func__ in dev_dbg()Andy Shevchenko1-5/+1
Dynamic debug has a run time knob to enable function name printing. Remove this from dev_dbg() calls. Furthermore, functional tracing when enabled can show what function is called, therefore remove empty dev_dbg() calls. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-08-22iio:accel: drop assign iio_info.driver_module and iio_trigger_ops.ownerJonathan Cameron1-3/+0
The equivalent of both of these are now done via macro magic when the relevant register calls are made. The actual structure elements will shortly go away. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
2017-07-17iio: accel: bmc150: Always restore device to normal mode after suspend-resumeHans de Goede1-8/+1
After probe we would put the device in normal mode, after a runtime suspend-resume we would put it back in normal mode. But for a regular suspend-resume we would only put it back in normal mode if triggers or events have been requested. This is not consistent and breaks reading raw values after a suspend-resume. This commit changes the regular resume path to also unconditionally put the device back in normal mode, fixing reading of raw values not working after a regular suspend-resume cycle. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-01-10iio:buffer: Introduced a function to assign the buffer specific attrs.Jonathan Cameron1-1/+2
This is a necessary step in taking the buffer implementation opaque. Signed-off-by: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
2016-09-03iio: accel: bmc150: reset chip at init timeOlof Johansson1-0/+11
In at least one known setup, the chip comes up in a state where reading the chip ID returns garbage unless it's been reset, due to noise on the wires during system boot. All supported chips have the same reset method, and based on the datasheets they all need 1.3 or 1.8ms to recover after reset. So, do the conservative thing here and always reset the chip. Signed-off-by: Olof Johansson <olof@lixom.net> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-30iio:core: timestamping clock selection supportGregor Boirie1-2/+2
Adds a new per-device sysfs attribute "current_timestamp_clock" to allow userspace to select a particular POSIX clock for buffered samples and events timestamping. Following clocks, as listed in clock_gettime(2), are supported: CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_MONOTONIC_RAW, CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE, CLOCK_BOOTTIME and CLOCK_TAI. Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com> Acked-by: Sanchayan Maity <maitysanchayan@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-27Merge tag 'iio-for-4.7b' of ↵Greg Kroah-Hartman1-45/+54
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-testing Jonathan writes: 2nd set of new device support, features and cleanup for IIO in the 4.7 cycle. Bit of a bumper set for new drivers but plenty of other stuff here as well! New device support * ad5592R ADC/DAC - new driver supporting ad5592r and ad5593r combined ADC/DAC and gpio chips. * Aosong am2315 relative humidity - new driver with triggered buffer support in follow up patch. * bmi160 imu - new driver * bmp280 - bmp180 support - note there is support in the misc/bmp085 driver. Intent is to remove that driver long term. * invensense mpu6050 - cleanup leading to explicit support of mpu9150 with a good few cleanups along the way. * Hope RF hp03 pressure and temperature sensor. - new driver * maxim DS1803 potentiometer - new driver * maxim max44000 light and proximity sensor - new driver built in a series of steps to support pretty much everything. * ROHM BH1780 light sensor - new driver. There is an existing driver in misc that this is pretty much intended to replace. The discussion on whether to support the non standard interface of that driver is some way is continuing. * st-gyro - lsm9ds0-gyro. The accel/magn side of this will take a while longer as extensions to the st library are needed for cases where two types of sensor share a single i2c address. * ti-adc081c - support the adc101c and adc121c * Vishay VEML6070 UV sensor - new driver. New features * core - devm_ APIs for channel_get and channel_get_all. The first user of these is the generic ADC based thermal driver. As it is going through the thermal tree these will be picked up as a patch to that next cycle as that is how the author preferred to do it. - mounting matrix support. This new core support allows devices to provide to userspace (typically from the device tree) allowing compensation for how the sensor is mounted on the device. First examples are on UAVs but it has a more mundane use on typical phone where the chip may be on the front or the back of the circuit board and soldered at any angle. Includes support for this ABI in ak8975 (which has an older interface, now deprecated) and mpu6050. * tools - add a -a option to enable all available channels in generic_buffer sample. Makes it somewhat easier to use. * adis library and drivers - support manual self test flag clearing. This has technically been broken for a very long time - result is an offset on readings as the applied field is on all the time. * ak8975 - triggered buffer support * bmc150 - spi support (including splitting the driver into core and i2c parts) * bmp280 - oversampling support. * dht11 - improved logging - useful to debug timing issues on this quirky device. * st-sensors - read each channel invidivually as not all support the optimization of reading in bulk. This is technically a fix, but will need to be backported if desired. - support open drain and shared interrupts. * ti-adc081c - triggered buffer support. Cleanups * inkern - white space fix. * ad7606 - use the iio_device_claim_direct_mode call rather than open coding equiv. * ad799x - white space fix. * ad9523 - unsigned -> unsigned int * apds9660 - brace location tidying up. - silence an uninitialized variable warning. * ak8975 - else and brace on same line fix. * at91_adc - white space fixes. * bmc150 - use regmap stored copy of the device pointer rather than having an additional copy. * bmg160 - use regmap stored copy of the device pointer rather than having an additional copy. * hid-sensors - white space fixes. * mcp3422 - white space fix. * mma7455 - use regmap to retrieve the device struct rather than carrying another copy in the private data. * ms_sensors - white space fix. * mxs-lradc - move current bindings out of staging - some will be shortly deprecated but the reality is that we have device trees out there using them so they will need to be supported for some time. They accidentally got left behind when the driver graduated from staging. - white space cleanup. - set INPUT_PROP_DIRECT. - move ts config into a better function. - move the STMP reset out of the ADC init. * vf610_adc - case label indenting fix.