- 15 Aug, 2022 40 commits
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Jakob Hauser authored
The raw temperature value is a number of counts from a certain starting point. The resolution of the temperature counts is different for the YAS variants. Temperature compensation for YAS532 version AC seems to be handled differently. It uses the deviation from 20 degree Celsius [1] whereas YAS530 and older versions of YAS532 apply solely the t value as a multiplier [2][3]. In funtion yas5xx_read_raw(), add case IIO_CHAN_INFO_PROCESSED. Remove scale of temperature as this isn't applied. Additionally correct sign of temperature channel in iio_chan_spec. It's already defined that way in the yas5xx_get_measure() function. [1] https://github.com/msm8916-mainline/android_kernel_qcom_msm8916/blob/GT-I9195I/drivers/iio/magnetometer/yas_mag_drv-yas532.c#L442 [2] https://github.com/NovaFusion/android_kernel_samsung_golden/blob/cm-12.1/drivers/sensor/compass/yas_mag_driver-yas530.c#L881-L883 [3] https://github.com/LineageOS/android_kernel_samsung_msm8930-common/blob/lineage-18.1/drivers/sensors/geomagnetic/yas_mag_driver-yas53x.c#L856-L858Signed-off-by:
Jakob Hauser <jahau@rocketmail.com> Reviewed-by:
Linus Walleij <linus.walleij@linaro.org> Reviewed-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/eb45f328c7a81eb622c6a8cfc5c468ea58bbdace.1660337264.git.jahau@rocketmail.comSigned-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Jakob Hauser authored
Looks like YAS530 raw values return picotesla and YAS532 nanotesla. Adapt comments and scaling. Signed-off-by:
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Jakob Hauser authored
In function yas5xx_volatile_reg(), register "YAS5XX_MEASURE_DATA + 8" shouldn't be volatile as we count from 0 to 7 here. Instead of lowering the number from 8 to 7, the operator "<=" is replaced by "<". The size of the measure data array is 8, therefore it's more natural to use 8 as a constant. This change is of low importance as the "+ 8" register isn't called. Signed-off-by:
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Jakob Hauser authored
The "hard_offsets" are currently unsigned u8 but they should be signed as they can get negative. They are signed in function yas5xx_meaure_offsets() and in the Yamaha drivers [1][2]. [1] https://github.com/NovaFusion/android_kernel_samsung_golden/blob/cm-12.1/drivers/sensor/compass/yas.h#L156 [2] https://github.com/msm8916-mainline/android_kernel_qcom_msm8916/blob/GT-I9195I/drivers/iio/magnetometer/yas_mag_drv-yas532.c#L91 Fixes: de8860b1 ("iio: magnetometer: Add driver for Yamaha YAS530") Signed-off-by:
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Crt Mori authored
Document the newly added vdd supply option. Signed-off-by:
Crt Mori <cmo@melexis.com> Acked-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220808144936.1559158-1-cmo@melexis.comSigned-off-by:
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Crt Mori authored
Provide possibility to toggle power supply to the sensor so that user can optimize their setup and not have the sensor constantly powered. Signed-off-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20220808204740.307667-13-u.kleine-koenig@pengutronix.deSigned-off-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_prepared() to replace some code that effectively open codes this new function. Reviewed-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
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Uwe Kleine-König authored
Make use of devm_clk_get_enabled() to replace some code that effectively open codes this new function. Reviewed-by:
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Jonathan Cameron authored
Having this structure defined static in the header lead to unnecessary duplication and required additional symbol exports. Use the EXPORT_NS_SIMPLE_DEV_PM_OPS() to clean this up in the same fashion as many other drivers do this. Signed-off-by:
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Jonathan Cameron authored
This formatting is odd, so fix it to be more standard. Signed-off-by:
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Jonathan Cameron authored
Given the struct platform_driver has one of it's elements assigned to point to the of_device_id table, it is never going to be unused. Drop the marking. Signed-off-by:
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Jonathan Cameron authored
____cacheline_aligned is an insufficient guarantee for non-coherent DMA on platforms with 128 byte cachelines above L1. Switch to the updated IIO_DMA_MINALIGN definition. As the tx[] an rx[] buffers are only used in the same SPI exchanges, we should be safe with them on the same cacheline. Hence only mark the first one __aligned(IIO_DMA_MINALIGN). Signed-off-by:
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Jonathan Cameron authored
____cacheline_aligned is an insufficient guarantee for non-coherent DMA on platforms with 128 byte cachelines above L1. Switch to the updated IIO_DMA_MINALIGN definition. Signed-off-by:
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Jonathan Cameron authored
____cacheline_aligned is an insufficient guarantee for non-coherent DMA on platforms with 128 byte cachelines above L1. Switch to the updated IIO_DMA_MINALIGN definition. Signed-off-by:
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Jonathan Cameron authored
Only accessed from the local file. Warning: drivers/iio/light/cm32181.c:508:1: warning: symbol 'cm32181_pm_ops' was not declared. Should it be static? Fixes: 68c1b3dd ("iio: light: cm32181: Add PM support") Signed-off-by:
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Jonathan Cameron authored
Warning cleanup: drivers/iio/test/iio-test-rescale.c:32:30: warning: symbol 'scale_cases' was not declared. Should it be static? drivers/iio/test/iio-test-rescale.c:480:30: warning: symbol 'offset_cases' was not declared. Should it be static? Signed-off-by:
Liam Beguin <liambeguin@gmail.com> Reviewed-by:
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Francesco Dolcini authored
STMPE driver does not require a specific node name anymore, only the compatible is checked, update binding according to this. Signed-off-by:
Francesco Dolcini <francesco.dolcini@toradex.com> Acked-by:
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Jonathan Cameron authored
All known major issues with this driver resolved so time to move it out of staging. This also allows us to remove the now empty staging/iio/cdc directory and build files. Note this cleanup work was done using the roadtest framework. https://lore.kernel.org/all/20220311162445.346685-1-vincent.whitchurch@axis.com/Signed-off-by:
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Jonathan Cameron authored
The datasheet description of offset calibration is complex, so for that on just refer the reader to the device datasheet. Signed-off-by:
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Jonathan Cameron authored
Tidy up some trivial whitespace issues. Signed-off-by:
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Jonathan Cameron authored
Switch over to the IIO core handling for _available attributes making them available for in kernel users and enforcing correct naming etc automatically. Signed-off-by:
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Jonathan Cameron authored
As this offset is applied equally to both lines of the differential pair, _ofset should not be used. Use the new ABI _zeropoint instead to avoid userspace software applying this value when calculating real value = (_raw + _offset) * _scale Also add a comment to explain why an offset of 0x800000 is applied within the driver rather than exposed to userspace. Signed-off-by:
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Jonathan Cameron authored
Address an ABI gap for device where the offset of both lines in a differential pair may be controlled so as to allow a wider range of inputs, but without having any direct effect of the differential measurement. _offset cannot be used as to remain in line with existing usage, userspace would be expected to apply it as (_raw + _offset) * _scale whereas _zeropoint is not. i.e. If we were computing the differential in software it would be. ((postive_raw + _zeropoint) - (negative_raw + zeropoint) + _offset) * _scale = ((postive_raw - negative_raw) + _offset) * _scale = (differential_raw + _offset) * _scale Similarly calibbias is expected to tweak the measurement seen, not the adjust the two lines of the differential pair. Needed for in_capacitanceX-capacitanceY_zeropoint for the AD7746 CDC driver. Signed-off-by:
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Jonathan Cameron authored
Performing the maths to rescale a 24 bit raw reading within the driver was resulting in precision losses. So make that userspace's problem by exporting the scale and letting the maths be done in userspace with appropriate precision. Issue identified using roadtester testing framework. Signed-off-by:
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Jonathan Cameron authored
As the comment states, this was only used in remove() and now there is no explicit remove() function to make use of it. Signed-off-by:
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Jonathan Cameron authored
Instead of encoding several different fields into chan->address use an indirection to a separate per channel structure where the various fields can be expressed in a more readable form. This also allows the register values to be constructed at runtime using FIELD_PREP(). Drop the now redundant _SHIFT macros. Signed-off-by:
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Jonathan Cameron authored
Not all paths require any locking at all. So to simplify the removal of such locking push the locks down into the individual case statements. Signed-off-by:
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Jonathan Cameron authored
Reduce deep indenting and simplify the locking cleanup that follows. Signed-off-by:
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Jonathan Cameron authored
I2C does not require DMA safe buffers so there is no need to ensure the buffers are in their own cacheline. Hence simplify things by using a local variable instead of embedding the buffer in the chip info structure. Includes a trivial whitespace cleanup to drop a line between function and error handling. Signed-off-by:
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Jonathan Cameron authored
The supply voltage is attenuated by 6 before being fed to the ADC. Handle this explicitly rather than pre-multiplying the _raw value by 6. Signed-off-by:
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Jonathan Cameron authored
Chance from fiddly local implementation of be24 to cpu endian conversion by reading into a 3 byte buffer and using get_unaligned_be24() Signed-off-by:
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