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2018-11-16iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbersHans de Goede9-19/+37
Before this commit sensor_hub_input_attr_get_raw_value() failed to take the signedness of 16 and 8 bit values into account, returning e.g. 65436 instead of -100 for the z-axis reading of an accelerometer. This commit adds a new is_signed parameter to the function and makes all callers pass the appropriate value for this. While at it, this commit also fixes up some neighboring lines where statements were needlessly split over 2 lines to improve readability. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-11-03iio:st_magn: Fix enable device after triggerMartin Kelly1-9/+3
Currently, we enable the device before we enable the device trigger. At high frequencies, this can cause interrupts that don't yet have a poll function associated with them and are thus treated as spurious. At high frequencies with level interrupts, this can even cause an interrupt storm of repeated spurious interrupts (~100,000 on my Beagleboard with the LSM9DS1 magnetometer). If these repeat too much, the interrupt will get disabled and the device will stop functioning. To prevent these problems, enable the device prior to enabling the device trigger, and disable the divec prior to disabling the trigger. This means there's no window of time during which the device creates interrupts but we have no trigger to answer them. Fixes: 90efe055629 ("iio: st_sensors: harden interrupt handling") Signed-off-by: Martin Kelly <martin@martingkelly.com> Tested-by: Denis Ciocca <denis.ciocca@st.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-10-29Merge tag 'staging-4.20-rc1' of ↵Linus Torvalds74-378/+3884
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging/IIO driver updates from Greg KH: "Here is the big staging and IIO driver pull request for 4.20-rc1. There are lots of things here, we ended up adding more lines than removing, thanks to a large influx of Comedi National Instrument device support. Someday soon we need to get comedi out of staging... Other than the comedi drivers, the "big" things here are: - new iio drivers - delete dgnc driver (no one used it and no one had the hardware anymore) - vbox driver updates and fixes - erofs fixes - tons and tons of tiny checkpatch fixes for almost all staging drivers All of these have been in linux-next, with the last few happening a bit "late" due to them getting stuck on my laptop during travel to the Mantainers summit" * tag 'staging-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (690 commits) staging: gasket: Fix sparse "incorrect type in assignment" warnings. staging: gasket: remove debug logs for callback invocation staging: gasket: remove debug logs in page table mapping calls staging: rtl8188eu: core: Use sizeof(*p) instead of sizeof(struct P) for memory allocation staging: ks7010: Remove extra blank line staging: gasket: Remove extra blank line staging: media: davinci_vpfe: Fix spelling mistake in enum staging: speakup: Add a pair of braces staging: wlan-ng: Replace long int with long staging: MAINTAINERS: remove obsolete IPX staging directory staging: MAINTAINERS: remove NCP filesystem entry staging: rtl8188eu: cleanup comparsions to false staging: gasket: Update device virtual address comment staging: gasket: sysfs: fix attribute release comment staging: gasket: apex: fix sysfs_show staging: gasket: page_table: simplify gasket_components_to_dev_address staging: gasket: page_table: fix comment in components_to_dev_address staging: gasket: page table: fixup error path allocating coherent mem staging: gasket: page_table: rearrange gasket_page_table_entry staging: gasket: page_table: remove unnecessary PTE status set to free ...
2018-10-25Merge tag 'mfd-next-4.20' of ↵Linus Torvalds1-8/+4
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "New Drivers - Add support for USART SPI to AT91* New Functionality - Add support for Audio CODECs to motorola-cpcap Fix-ups - DT documentation fix-ups; atmel-usart - Staticise functions/structs; spi-at91-usart, arizona-core - Constify; ti-lmu - Fix memory leaks; menelaus - Change device 'wake-up' status; ti_am335x_tscadc, max8997 - Power Management (suspend/resume) semantic changes; ti_am335x_adc, cros_ec, max8997 - SPDX churn; sec-core (+ headers), max* (+ headers), intel* (+ headers), - Trivial (whitespace, email addresses, alphabetisise); Kconfig, adp5520, intel_soc_pmic_* - Build as module; sec-irq - Use new %pOFn printk format for device_node.name; max77620 - Remove unused code; madera - Use generic MACROs; intel_msic, intel_soc_pmic_crc - Move to GPIOD; ti-lmu - Use managed resources; ti-lmu Bug Fixes - Add missing headers; at91-usart - Prevent device from entering low-power mode; arizona-core - Poll for BOOT_DONE to avoid still-booting NACK; madera-core - Prevent ADC read from shutting down device; mc13xxx-core" * tag 'mfd-next-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (45 commits) mfd: cros_ec: Avoid unneeded internal declaration warning mfd: ti-lmu: Use of_device_get_match_data() helper mfd: ti-lmu: Use managed resource for everything mfd: ti-lmu: Switch to GPIOD mfd: ti-lmu: constify mfd_cell tables mfd: max8997: Disable interrupt handling for suspend/resume cycle mfd: max8997: Enale irq-wakeup unconditionally mfd: arizona: Make array mclk_name static, shrinks object size MAINTAINERS: Add myself as designated reviewer of Intel MFD PMIC mfd: Convert Intel PMIC drivers to use SPDX identifier 1;5201;0c Reduce size of duplicated comments by switching to use SPDX identifier. mfd: Sort headers alphabetically for Intel PMIC drivers mfd: intel_soc_pmic_bxtwc: Chain power button IRQs as well mfd: intel_soc_pmic_crc: Use REGMAP_IRQ_REG() macro mfd: intel_soc_pmic_crc: Use DEFINE_RES_IRQ_NAMED() macro mfd: intel_msic: Use DEFINE_RES_IRQ() macro mfd: motorola-cpcap: Add audio-codec support mfd: mc13xxx-core: Fix PMIC shutdown when reading ADC values mfd: madera: Remove unused forward reference mfd: max77620: Convert to using %pOFn instead of device_node.name mfd: madera: Don't use regmap_read_poll_timeout to poll for BOOT_DONE ...
2018-10-21Merge remote-tracking branches 'regmap/topic/noinc' and ↵Mark Brown3-13/+16
'regmap/topic/single-rw' into regmap-next
2018-10-09iio: adc: ti_am335x_adc: Disable ADC during suspend unconditionallyVignesh R1-8/+4
Parent MFD device takes care of enabling ADC interface whenever touchscreen is marked wakeup capable. Therefore, unconditionally disable ADC interface during system suspend to save power in case of system with just ADC and no TSC. Signed-off-by: Vignesh R <vigneshr@ti.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-10-01Merge tag 'iio-for-4.20b' of ↵Greg Kroah-Hartman10-74/+304
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: Second set of IIO new device support features and cleanup for the 4.20 cycle. One merge commit in here to bring in the SPI_CS_WORD flag patches that are also going via the SPI tree. There are a few more fixes than normal for a pull targetting the next merge window. These are all long term issues and as we are late in the cycle, they can wait. New device support * ad7606 - Add support fo the ad7605-4 driver. This driver is still in staging but is heading in the right direction to graduate, motivated partly by the requirement for this device support. * ST VL53L0X ToF ranging sensor - New minimal driver. Interrupt support to follow. New features * SPI_CS_WORD optimization allows long transfers with the chip select toggled every 16bits. There is a software fallback as well to let drivers not care about whether the hardware supports it. * bh1750 - Device tree support and bindings. * ti-ads7950 - Use the SPI_CS_WORD optmization to save lots of cpu cycles (assuming the hardware supports it) Fixes and cleanups * ad5064 - Fix some long incorrect regulator error handling that preventing enabling the internal regulator. * ad7606 - The ad7606 doesn't actually have a 2.5V range and the values provided for scale have always been wrong. Fix them. - Drop some wrong kernel-doc (things that don't exist) - Add missing kernel-doc * at91-adc - Fixing missing ack of dataready on sysfs channel reads to avoid spurious interrupts. - Fix a wrong channel numbers in triggered_buffer_mode * hmc5843 - Fix incorrect part number in a comment. * imx25-gcq - Fix a device_node leak in an error path. * meson-saradc - Drop an unused and pointless define. - Use of_device_get_match_data instead of opencoding - Tidy up how meson_sar_adc_param is accessed. - Rework prior to adding some temperature sensor support. * tag 'iio-for-4.20b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: iio: ad5064: Fix regulator handling iio: adc: meson-saradc: use the address attribute from iio_chan_spec iio: adc: meson-saradc: do not use meson_sar_adc_iio_channels directly iio: adc: at91: fix wrong channel number in triggered buffer mode iio: adc: at91: fix acking DRDY irq on simple conversions iio: adc: meson-saradc: simplify access to meson_sar_adc_param iio: adc: meson-saradc: use of_device_get_match_data iio: adc: meson-saradc: remove #define MESON_SAR_ADC_DELTA_10_TS_C_SHIFT iio: light: bh1750: Add device tree support dt-bindings: iio: light: bh1750: Add device tree binding documentation staging:iio:ad7606: Add support for the ad7605-4 iio: proximity: Add driver support for ST's VL53L0X ToF ranging sensor. staging:iio:ad7606: update structs with doc annotations iio: magnetometer: hmc5843: Fixed a comment error. iio: adc: imx25-gcq: Fix leak of device_node in mx25_gcq_setup_cfgs() iio: adc: ti-ads7950: use SPI_CS_WORD to reduce CPU usage spi: add software implementation for SPI_CS_WORD spi: add new SPI_CS_WORD flag staging:iio:ad7606: Remove incorrect kernel doc annotations staging:iio:ad7606: fix voltage scales
2018-09-29iio: ad5064: Fix regulator handlingLars-Peter Clausen1-15/+38
The correct way to handle errors returned by regualtor_get() and friends is to propagate the error since that means that an regulator was specified, but something went wrong when requesting it. For handling optional regulators, e.g. when the device has an internal vref, regulator_get_optional() should be used to avoid getting the dummy regulator that the regulator core otherwise provides. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-29iio: adc: meson-saradc: use the address attribute from iio_chan_specMartin Blumenstingl1-14/+15
Until now the "channel" number is identical to how the channel is identified inside the (FIFO) registers. In our case we have eight channels and the hardware also has eight inputs. However, there are two special inputs: - channel 6 can select between the SAR_ADC_CH6 pad and the chip's internal temperature sensor - channel 7 can select between SAR_ADC_CH7 and VSS, VDD / 4, VDD / 2, VDD * 3 / 4 and VDD. When programming the registers to read for example the temperature sensor we have to select FIFO channel 6, set the correct bit which muxes channel 6 to the temperature sensor and then start the ADC measurement for channel 6 as usual. When we add support for the temperature sensor the driver has to know about that it has to use FIFO channel 6 to measure using the chip's internal temperature sensor. However, in that case the iio_chan_spec channel will not be 6 because this is already used for the SAR_ADC_CH6 pad input. Thus we use iio_chan_spec's address field to store the FIFO channel number for each channel. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-29iio: adc: meson-saradc: do not use meson_sar_adc_iio_channels directlyMartin Blumenstingl1-2/+2
In the future we may support two different channel sets: - one which includes the voltage pads and the temperature sensor output (for Meson8, Meson8b and Meson8m2) - one which only includes the voltage pads (GXBB, GXL, GXM and AXG) Channel 7 has a special function on all of these platforms. However, since we will have different channel array definitions we want our code to always use whatever channels struct iio_dev uses. No functional changes for now. This is the preparation for adding temperature sensor support to this driver. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-29iio: adc: at91: fix wrong channel number in triggered buffer modeEugen Hristev1-1/+3
When channels are registered, the hardware channel number is not the actual iio channel number. This is because the driver is probed with a certain number of accessible channels. Some pins are routed and some not, depending on the description of the board in the DT. Because of that, channels 0,1,2,3 can correspond to hardware channels 2,3,4,5 for example. In the buffered triggered case, we need to do the translation accordingly. Fixed the channel number to stop reading the wrong channel. Fixes: 0e589d5fb ("ARM: AT91: IIO: Add AT91 ADC driver.") Cc: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-29iio: adc: at91: fix acking DRDY irq on simple conversionsEugen Hristev1-0/+2
When doing simple conversions, the driver did not acknowledge the DRDY irq. If this irq status is not acked, it will be left pending, and as soon as a trigger is enabled, the irq handler will be called, it doesn't know why this status has occurred because no channel is pending, and then it will go int a irq loop and board will hang. To avoid this situation, read the LCDR after a raw conversion is done. Fixes: 0e589d5fb ("ARM: AT91: IIO: Add AT91 ADC driver.") Cc: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-29iio: adc: meson-saradc: simplify access to meson_sar_adc_paramMartin Blumenstingl1-14/+14
Commit 053ffe3c8cfe31 ("iio: adc: meson-saradc: squash and share the common adc platform data") put all the data which is needed at runtime from struct meson_sar_adc_data to a new struct meson_sar_adc_param so we can re-use the platform specific configuration without having to duplicate everything just to change the name. The only place where struct meson_sar_adc_data is now needed is the _probe function which has to pass the name to the iio_dev. All other functions only need access to struct meson_sar_adc_param. This means we can simplify struct meson_sar_adc_priv. The goal of this patch is to make the code a bit easier to read since this removes one level of nesting. No functional changes intended. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-29iio: adc: meson-saradc: use of_device_get_match_dataMartin Blumenstingl1-5/+5
This simplifies our _probe function by using of_device_get_match_data instead of open-coding it. No functional changes. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-29iio: adc: meson-saradc: remove #define MESON_SAR_ADC_DELTA_10_TS_C_SHIFTMartin Blumenstingl1-1/+0
This define is of no use because the driver is avoiding shifting bits by itself but using FIELD_GET/FIELD_PREP (which are using bit masks) instead. There is already a MESON_SAR_ADC_DELTA_10_TS_C_MASK bit mask so MESON_SAR_ADC_DELTA_10_TS_C_SHIFT was redundant. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-29iio: light: bh1750: Add device tree supportryang1-0/+11
Add device tree support for ROHM BH1750 series ambient light sensors. Signed-off-by: ryang <decatf@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-22iio: proximity: Add driver support for ST's VL53L0X ToF ranging sensor.Song Qiang3-0/+177
This driver was originally written by ST in 2016 as a misc input device driver, and hasn't been maintained for a long time. I grabbed some code from it's API and reformed it into an iio proximity device driver. This version of driver uses i2c bus to talk to the sensor and polling for measuring completes, so no irq line is needed. It can be tested with reading from /sys/bus/iio/devices/iio:deviceX/in_distance_input Signed-off-by: Song Qiang <songqiang1304521@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-22iio: magnetometer: hmc5843: Fixed a comment error.Song Qiang1-1/+1
Replace 'hcm5843' with 'hmc5843'. Signed-off-by: Song Qiang <songqiang1304521@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-22iio: adc: imx25-gcq: Fix leak of device_node in mx25_gcq_setup_cfgs()Alexey Khoroshilov1-0/+6
Leaving for_each_child_of_node loop we should release child device node, if it is not stored for future use. Found by Linux Driver Verification project (linuxtesting.org). JC: I'm not sending this as a quick fix as it's been wrong for years, but good to pick up for stable after the merge window. Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Fixes: 6df2e98c3ea56 ("iio: adc: Add imx25-gcq ADC driver") Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-22iio: adc: ti-ads7950: use SPI_CS_WORD to reduce CPU usageDavid Lechner1-22/+31
This changes how the SPI message for the triggered buffer is setup in the TI ADS7950 A/DC driver. By using the SPI_CS_WORD flag, we can read multiple samples in a single SPI transfer. If the SPI controller supports DMA transfers, we can see a significant reduction in CPU usage. For example, on an ARM9 system running at 456MHz reading just 4 channels at 100Hz: before this change, top shows the CPU usage of the IRQ thread of this driver to be ~7.7%. After this change, the CPU usage drops to ~3.8%. The use of big-endian for the raw data was cargo culted from another driver when this driver was originally written. It used an SPI word size of 8 bits and big-endian byte ordering to effectively emulate 16 bit words. Now, in order to inject a CS toggle between each word, we need to use the correct word size, otherwise we would get a CS toggle half way through each word 16-bit. The SPI subsystem uses CPU byte ordering for multi-byte words. So, the data we get back from the SPI is going to be CPU endian now no matter what. Converting that to big endian will just add overhead on little endian systems so we opt to change the raw data format from big endian to CPU endian. There is a small risk that this could break some lazy userspace programs that use the raw data without checking the data format. We can address this if/when it actually comes up. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-16Merge 4.19-rc4 into staging-nextGreg Kroah-Hartman2-8/+6
Handle the merge issues and take the iio and staging driver fixes. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-14Merge tag 'iio-for-4.20a' of ↵Greg Kroah-Hartman65-304/+3580
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: 1st round of IIO new device support, features and cleanups in the 4.20 cycle. There is a merge commit in here to pull in regmap support for repeatedly reading the same register (to read out FIFOs). Used by the adxl372 driver. This will find uses elsewhere once we tidy up various drivers that are effectively doing this and relying on not enabling regcache. New device support * Analog devices ADXL372 accelerometer - new driver for this accelerometer including fifo and and interrupt support. Follow up patches enforce trigger validation, add sampling frequency control and filter bandwidth control. A later series added i2c support to the existing SPI support. * ST lsm6dsx - rework and add support fo the LSM6DSO 6 axis mems sensor. * Linear LTC 1660 DAC - new driver supporting the LTC 1660 and LTC 1665 SPI DACs. * Microchip mcp3911 ADC. - new driver for this integrated analog front end and ADC. * Qualcomm SPMI PMIC5 adc driver - using the spmi framework, new driver and bindings for this ADC. Follow up patch adds some missing channels. Features * ad5758 - support hard reset using a gpio (if provided). * mpu6050 - Regulator support * qcom-spmi-adc5 - Sanity check the channel numbers provided by DT to make sure the driver actually knows about them. * sc27xx - give raw data for channel 20 as it's used on all known boards for the headset which needs a custom converstion function. If it turns out someone builds a board where this isn't true we will deal with it when it happens. - add ADC scale calibration. * tsl2772 - support device tree binding to set the proximity led settings. - regulator supprot. - binding for apds9930 - trivial addition as register compatible with tsl2772. Cleanups / Minor fixes * adxl345 - supress a static checker warning but explicitly checking if the id object is null. * bh1750 - avoid CONFIG_PM_SLEEP checks. - SPDX. * bme680 - spelling mistake - use clamp rather than open coding. - white space and other similar fixes. - rename MSK to MASK for clarifty and use GENMASK to specify them. - use the FIELD_GET macro rather than a very odd accessor of dividing by 16 to get the shift. - rework to share handing for oversampling of the various channels in a unified way. - check explicitly for val2 in write_raw function to ensure it is 0. - drop some field defines that don't add anything. * dpot-adc - SPDX * envelope detector - SPDX * isl29501 - fix an ancient compiler warning mostly because it results in much nicer code. * max30102 - mark switch fall throughs. * max44000 - drop an unused variable. * max512 - avoid CONFIG_PM_SLEEP checks. * max5481 - use of_device_get_match_data rather than open coding it. * max5821 - avoid CONFIG_PM_SLEEP checks. * max9611 - explicity cast an enum to an integer to make it totally clear that this is intended. * mcp4018 - fix an inconsistent MODULE_LICENSE. - use of_device_get_match_data rather than open coding it. * mcp4531 - use of_device_get_match_data rather than open coding it. - SPDX * mcp4725 - avoid CONFIG_PM_SLEEP checks. * mcp4922 - Fix error handling and prevent writing a negative to when setting the output voltage. * ms5611 - drop deprecated compatible strings without manufacturer from being explicitly listed. They are handled anyway. - SPDX * multiplexer - SPDX * qcom-vadc - fix inconsistent documentation for reg. * ti-dac5571 - provide and of_match_table. * treewide - update Michael Hennerich's email address. - Use %pOFn rather than device_node.name. * documentation. - tidy up a wrong kernel version for the introduction of the position_relative ABI.
2018-09-09Merge tag 'iio-fixes-4.19a' of ↵Greg Kroah-Hartman2-8/+6
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus Jonathan writes: First set of IIO fixes for the 4.19 cycle. * ad9523 - sysfs write should return the number of characters used or an error, not 0 which could result in an infinite loop in userspace. * lsm6dsx - Fix computation of length when updating the watermark to include timestamps avoiding the watermark being set earlier than intended. * maxim_thermocouple - Revert a patch adding the max31856 as it's not actually compatible with the register set that this driver supports. * si1133 - Fix an impossible value check so we don't always error out whether the passed in value is good or bad.
2018-09-08iio: light: bh1750: simplify setting PM opsTomasz Duszynski1-7/+2
Relying on CONFIG_PM_SLEEP to set PM ops is not necessary since core will handle everything internally. One have to only make sure that functions that can go unused are marked with __maybe_unused. Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-08iio: adxl372: Add support for I2C communicationStefan Popa5-1/+75
The adxl372 is designed to communicate in either SPI or I2C protocol. It autodetects the format being used, requiring no configuration control to select the format. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-08iio: adxl372: Refactor the driverStefan Popa5-51/+101
This patch restructures the existing adxl372 driver by adding a module for SPI and a header file, while the baseline module deals with the chip-logic. This is a necessary step, as this driver should support in the future a similar device which differs only in the type of interface used (I2C instead of SPI). Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-08iio: pressure: ms5611: switch to SPDX identifierTomasz Duszynski4-16/+4
Drop boilerplate license text and use SPDX identifier instead. Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-08iio: light: bh1750: switch to SPDX identifierTomasz Duszynski1-4/+1
Drop boilerplate license text and use SPDX identifier instead. Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-07regmap: split up regmap_config.use_single_rwDavid Frey3-13/+16
Split regmap_config.use_single_rw into use_single_read and use_single_write. This change enables drivers of devices which only support bulk operations in one direction to use the regmap_bulk_*() functions for both directions and have their bulk operation split into single operations only when necessary. Update all struct regmap_config instances where use_single_rw==true to instead set both use_single_read and use_single_write. No attempt was made to evaluate whether it is possible to set only one of use_single_read or use_single_write. Signed-off-by: David Frey <dpfrey@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-02iio: imu: st_lsm6dsx: add support to LSM6DSOLorenzo Bianconi6-8/+205
Add support to STM LSM6DSO 6-axis (acc + gyro) Mems sensor https://www.st.com/resource/en/datasheet/lsm6dso.pdf Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: imu: st_lsm6dsx: add addr/max_word_len to st_lsm6dsx_read_block()Lorenzo Bianconi1-7/+9
Add reg addr and max_word_len parameters to st_lsm6dsx_read_block since LSM6DSO will use a different register address to read samples from the FIFO and a different sample len Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: imu: st_lsm6dsx: make st_lsm6dsx_check_odr() non-staticLorenzo Bianconi2-2/+2
Remove static qualifier from st_lsm6dsx_check_odr() definition in order to use it for the support of new devices Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: imu: st_lsm6dsx: add read_fifo callback to fifo_opsLorenzo Bianconi3-3/+11
Remove static qualifier from st_lsm6dsx_read_fifo definition and introduce read_fifo function pointer in fifo_ops data structure in order to run the proper read_fifo routine since other compliant devices will use a different FIFO queueing scheme. Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: imu: st_lsm6dsx: take into account ts samples in wm configurationLorenzo Bianconi1-7/+6
Take into account hw timer samples in pattern length computation done in st_lsm6dsx_update_watermark routine for watermark configuration. Moreover use samples in pattern (sip) already computed in st_lsm6dsx_update_decimators routine Fixes: 213451076bd3 ("iio: imu: st_lsm6dsx: add hw timestamp support") Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: dac: ad5758: Add support for hard resetStefan Popa1-2/+24
The ad5758 has a hardware reset active low input pin. This patch adds a devicetree entry for a reset GPIO and a new ad5758_reset() function. During initialization, it is checked if the reset property is specified and the the GPIO is being asserted, therefore the device will become active. When the reset function is called, if the gpio_reset var is set, then the GPIO will be toggled, otherwise a software reset is performed. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: Convert to using %pOFn instead of device_node.nameRob Herring3-9/+9
In preparation to remove the node name pointer from struct device_node, convert printf users to use the %pOFn format specifier. Cc: Jonathan Cameron <jic23@kernel.org> Cc: Hartmut Knaack <knaack.h@gmx.de> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: linux-iio@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: adc: qcom-spmi-adc5: Verify channel numbers from DTMatthias Kaehlcke1-1/+2
The driver only defines a subset of all possible ADC channels. Channel numbers read from the device tree are accepted as long as they don't exceed a max value, even when no channel definition exists. Add a check to abort initialization in this case. Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02Revert "iio: temperature: maxim_thermocouple: add MAX31856 part"Matt Ranostay1-1/+0
This reverts commit 535fba29b3e1afef4ba201b3c69a6992583ec0bd. Seems the submitter (er me, hang head in shame) didn't look at the datasheet enough to see that the registers are quite different. This needs to be reverted because a) would never work b) to open it be added to a Maxim RTDs (Resistance Temperature Detectors) under development by author Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: light: isl29501: Simplify code to kill compiler warningGeert Uytterhoeven1-10/+2
With gcc 4.1.2: drivers/iio/proximity/isl29501.c: In function ‘isl29501_register_write’: drivers/iio/proximity/isl29501.c:235: warning: ‘msb’ may be used uninitialized in this function While this is a false positive, it can easily be avoided by removing the "msb" intermediate variable. Remove the "lsb" intermediate variable for consistency. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: adc: sc27xx: Add ADC scale calibrationBaolin Wang1-3/+71
This patch adds support to read calibration values from the eFuse controller to calibrate the ADC channel scales, which can make ADC sample data more accurate. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-09-02iio: adc: sc27xx: Add raw data supportBaolin Wang1-35/+45
The headset device will use channel 20 of ADC controller to detect events, but it needs the raw ADC data to do conversion according to its own formula. Thus we should configure the channel mask separately and configure channel 20 as IIO_CHAN_INFO_RAW, as well as adding raw data read support. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-08-25iio: dac: ti-dac5571: provide of_match_table to driverMarcus Folkesson1-0/+1
Use the created list of of_device_id's as a match table. Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-08-25iio: dac: mcp4922: fix error handling in mcp4922_write_rawMarcus Folkesson1-3/+8
Do not try to write negative values and make sure that the write goes well. Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-08-25iio: dac: add support for ltc1660Marcus Folkesson3-0/+261
LTC1665/LTC1660 is a 8/10-bit Digital-to-Analog Converter (DAC) with eight individual channels. Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-08-25iio:adxl372: Add filter bandwidth supportStefan Popa1-2/+36
This patch adds the option for the user to select the filter bandwidth. The user can also read the available bandwidths which are always adjusted to be at most half of the sampling frequency. Furthermore, the currently selected bandwidth can be read via the read_raw function, while the write_raw sets a new bandwidth value. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-08-25iio:adxl372: Add sampling frequency supportStefan Popa1-1/+73
This patch adds the option for the user to select the sampling frequency. Also, the user can read the available frequencies and read the currently set frequency via the read_raw function. The frequency can be set via the write_raw function. When the frequency is set, the bandwidth is also checked and ensured that it is constrained to at most half of the sampling frequency. Also, the activity and inactivity timers have to be updated because they depend on the selected ODR. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-08-25iio: adxl372: Provide validate_trigger and validate_device callbacksStefan Popa1-0/+13
This patch provides a validate_device callback for the trigger which makes sure that other devices are rejected. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-08-25iio: chemical: bme680: Remove field value definesDavid Frey2-4/+3
Remove BME680_RUN_GAS_EN_BIT and BME680_NB_CONV_0_VAL field value definitions because the fields are simply boolean and integer respectively. Signed-off-by: David Frey <dpfrey@gmail.com> Reviewed-by: Himanshu Jha <himanshujha199640@gmail.com> Tested-by: Himanshu Jha <himanshujha199640@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-08-23treewide: convert ISO_8859-1 text comments to utf-8Arnd Bergmann1-1/+1
Almost all files in the kernel are either plain text or UTF-8 encoded. A couple however are ISO_8859-1, usually just a few characters in a C comments, for historic reasons. This converts them all to UTF-8 for consistency. Link: http://lkml.kernel.org/r/20180724111600.4158975-1-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Simon Horman <horms@verge.net.au> [IPVS portion] Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> [IIO] Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Acked-by: Rob Herring <robh@kernel.org> Cc: Joe Perches <joe@perches.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Rob Herring <robh+dt@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-21Merge branch 'i2c/for-4.19' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - the core has now a lockless variant of i2c_smbus_xfer. Some open coded versions of this got removed in drivers. This also enables proper SCCB support in regmap. - locking got a more precise naming. i2c_{un}lock_adapter() had to go, and we know use i2c_lock_bus() consistently with flags like I2C_LOCK_ROOT_ADAPTER and I2C_LOCK_SEGMENT to avoid ambiguity. - the gpio fault injector got a new delicate testcase - the bus recovery procedure got fixed to handle the new testcase correctly - a new quirk flag for controllers not able to handle zero length messages together with driver updates to use it - new drivers: FSI bus attached I2C masters, GENI I2C controller, Owl family S900 - and a good set of driver improvements and bugfixes * 'i2c/for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (77 commits) i2c: rcar: implement STOP and REP_START according to docs i2c: rcar: refactor private flags i2c: core: ACPI: Make acpi_gsb_i2c_read_bytes() check i2c_transfer return value i2c: core: ACPI: Properly set status byte to 0 for multi-byte writes dt-bindings: i2c: rcar: Add r8a774a1 support dt-bindings: i2c: sh_mobile: Add r8a774a1 support i2c: imx: Simplify stopped state tracking i2c: imx: Fix race condition in dma read i2c: pasemi: remove hardcoded bus numbers on smbus i2c: designware: Add SPDX license tag i2c: designware: Convert to use struct i2c_timings i2c: core: Parse SDA hold time from firmware i2c: designware-pcidrv: Mark expected switch fall-through i2c: amd8111: Mark expected switch fall-through i2c: sh_mobile: use core to detect 'no zero length read' quirk i2c: xlr: use core to detect 'no zero length' quirk i2c: rcar: use core to detect 'no zero length' quirk i2c: stu300: use core to detect 'no zero length' quirk i2c: pmcmsp: use core to detect 'no zero length' quirk i2c: mxs: use core to detect 'no zero length' quirk ...
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