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path: root/drivers/iio/adc
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2019-10-18iio: adc: cpcap-adc: Fix missing IRQF_ONESHOT as only threaded handler.Jonathan Cameron
Coccinelle noticed: CHECK drivers/iio/adc/cpcap-adc.c drivers/iio/adc/cpcap-adc.c:1009:9-34: ERROR: Threaded IRQ with no primary handler requested without IRQF_ONESHOT As far as I can see this is a simple case of it should be specified but isn't. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Tony Lindgren <tony@atomide.com>
2019-10-18iio: adc: meson_saradc: use devm_platform_ioremap_resourceJonathan Cameron
Avoid local boilerplate. Suggested by coccinelle via coccicheck. CHECK drivers/iio/adc/meson_saradc.c drivers/iio/adc/meson_saradc.c:1218:1-5: WARNING: Use devm_platform_ioremap_resource for base Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-18iio: adc: exynos: use devm_platform_ioremap_resourceJonathan Cameron
Reduce local boilerplate. Identified by coccinelle drivers/iio/adc/exynos_adc.c:792:1-11: WARNING: Use devm_platform_ioremap_resource for info -> regs Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
2019-10-18iio: adc: exynos: Drop a stray semicolonJonathan Cameron
Identified by coccinelle drivers/iio/adc/exynos_adc.c:654:2-3: Unneeded semicolon Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
2019-10-18iio: adc: stmpe-adc: Cleanup endian type of local variableJonathan Cameron
Nothing stops data being of type __be16, which fixes the warning: CHECK drivers/iio/adc/stmpe-adc.c drivers/iio/adc/stmpe-adc.c:202:29: warning: cast to restricted __be16 drivers/iio/adc/stmpe-adc.c:202:29: warning: cast to restricted __be16 drivers/iio/adc/stmpe-adc.c:202:29: warning: cast to restricted __be16 drivers/iio/adc/stmpe-adc.c:202:29: warning: cast to restricted __be16 Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: <philippe.schenker@toradex.com>
2019-10-18iio: adc: mcp320x: Tidy up endian types in type cast.Jonathan Cameron
Fixes the sparse warning: drivers/iio/adc/mcp320x.c:167:41: warning: incorrect type in argument 1 (different base types) drivers/iio/adc/mcp320x.c:167:41: expected restricted __be32 const [usertype] *p drivers/iio/adc/mcp320x.c:167:41: got unsigned int [usertype] *<noident> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lukas Wunner <lukas@wunner.de>
2019-10-18iio: adc: at91-sama5d2: Replace 0 with NULL when clearing some pointers.Jonathan Cameron
Cleans up the sparse warning: CHECK drivers/iio/adc/at91-sama5d2_adc.c drivers/iio/adc/at91-sama5d2_adc.c:1486:31: warning: Using plain integer as NULL pointer drivers/iio/adc/at91-sama5d2_adc.c:1509:31: warning: Using plain integer as NULL pointer Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Eugen Hristev <eugen.hristev@microchip.com>
2019-10-18Merge branch 'ib-ab8500-5.4-rc1' into HEADJonathan Cameron
Immutable branch as considerable overlap with mfd, power and hwmon.
2019-10-18iio: adc: New driver for the AB8500 GPADCLinus Walleij
This is a new driver for the ST-Ericsson AB8500 GPADC, which replaces the old driver in drivers/mfd/ab8500-gpadc.c and thus gets rid of another necessarily different custom driver from the times before IIO existed. The AB8500 GPADC can convert 10 different channels and these are used for monitoring voltages in the U8500 chipset, some are used for battery charging, some for temperature monitoring. As this is very core functionality that a lot of drivers depend on and was formerly compiled in with the AB8500 core driver, we deafault it to 'y' in Kconfig: it can be compiled out but it is really not advisible: the platform can for example overheat if we do. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-15iio: adc: intel_mrfld_adc: Add Basin Cove ADC driverVincent Pelletier
Exposes the ADC device present on, at least, Intel Merrifield platform. Based on work done by: Yang Bin <bin.yang@intel.com> Huiquan Zhong <huiquan.zhong@intel.com> Sumeet Pawnikar <sumeet.r.pawnikar@intel.com> Pavan Kumar S <pavan.kumar.s@intel.com> Though it has been heavily rewritten for upstream. Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-15iio: adc: max1027: Introduce 12-bit devices supportMiquel Raynal
Maxim's max12xx series is very similar to the max10xx series, with the difference of the measurements depth which is upgraded from 10 to 12 bits per channel. Everything else looks the same. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-15iio: adc: max1027: Prepare the introduction of different resolutionsMiquel Raynal
Maxim's max1027/29/31 series returns the measured voltages with a resolution of 10 bits. There is a very similar series, max1227/29/31 which works identically but uses a resolution of 12 bits. Prepare the support for these chips by turning the 'depth' into a macro parameter instead of hardcoding it everywhere. Also reorganize just a bit the macros at the top to avoid repeating tens of lines when adding support for a new chip. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-15iio: adc: max1027: Reset the device at probe timeMiquel Raynal
All the registers are configured by the driver, let's reset the chip at probe time, avoiding any conflict with a possible earlier configuration. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-15iio: adc: max1027: Make it optional to use interruptsMiquel Raynal
The chip has a 'start conversion' and a 'end of conversion' pair of pins. They can be used but this is absolutely not mandatory as regular polling of the value is totally fine with the current internal clocking setup. Turn the interrupts optional and do not error out if they are not inquired in the device tree. This has the effect to prevent triggered buffers use though. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-15iio: adc: max1027: Add debugfs register read supportMiquel Raynal
Until now, only write operations were supported. Force two bytes read operation when reading, which should fit most of the development purposes. Of course, extended operations like buffered reads on multiple channels or even temperature + voltage reads will not be read entirely. Usually, just starting a new operation will work but in any case a software reset (done through the debufs interface too) will return the device in a usable state. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-14Merge 5.4-rc3 into staging-nextGreg Kroah-Hartman
We want the staging driver fixes in here as well to build on and test with. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-13Merge tag 'iio-for-5.5a-take3' of ↵Greg Kroah-Hartman
https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: First set of IIO new device support, cleanups and features for the 5.5 cycle Third version with the adis rework set dropped as better to just have a fresh version of that at some future date. The usual mixed backs of new device support being added to drivers, long term reworks continuing and little per driver cleanups and features. Also a few trivial counter subsystem tidy ups on behalf of William. Core new feature * Device label support. A long requested feature no one got around to implementing before. Allows DT based provision of a 'label' that identifies a device uniquely within a system. This differs from existing 'name' which is meant to be the part number. New device support * ingenic-adc - Support for the JZ4770 SoC ADC including bindings. * inv_mpu6050 - Add support for magnetometer in MPU925x parts. Fiddly to do as this is actually a separate device sitting inside the package, but with the master device being able to schedule reads etc. Will only run if the auxiliary bus is not in use for any other devices. Features * ad7192 - Userspace calibration controls to do zero and full scale. * st_lsm6dsx - Enable latched interrupts by default for sensors events with related clear. - Motion events and related wakeup source. This needed quite a bit of refactoring as well. Cleanups and minor features * ad7192 - sysfs ABI docs * ad7949 - Remove code to readback configuration word as driver never actually enabled it. - Fix incorrect xfer length. Not actually known to cause problems other than wasted bus usage. * adis16080 - Replace core mlock usage with local lock with more appropriate scope. * adis16130 - Remove pointless mlock usage. * adis16240 - Remove include of gpio.h as no gpio usage. * atlas-ph-sensor - Improve logical ordering of buffer predisable / postenable functions. This is part of a longer term rework Alexandru is driving towards. * bh1750 - Fix up a static compiler warning and make the code more readable. - yaml conversion of binding + MAINTAINERS entry. * bmp280 - Drop a stray newline. * cm36651 - Drop a redundant assignment * itg3200 - Alignment cleanup. * max31856 - Add missing of_node and parent references, useful to identify the device. * sc27xx_adc - Use devm_hwspin_lock_request_specific rather than local rolled version. * stm32-lptimer counter - kernel-doc warning. * stm32-timer counter - kernel-doc warning. - Alignment cleanup. * sx9500 - Improve logical ordering of buffer predisable / postenable functions. This is part of a longer term rework Alexandru is driving towards. * tcs3414 - Improve logical ordering of buffer predisable / postenable functions. This is part of a longer term rework Alexandru is driving towards. * tag 'iio-for-5.5a-take3' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (41 commits) iio: pressure: bmp280: remove stray newline iio: adc: sc27xx: Use devm_hwspin_lock_request_specific() to simplify code iio: chemical: atlas-ph-sensor: fix iio_triggered_buffer_predisable() position iio: gyro: clean up indentation issue counter: stm32: clean up indentation issue iio: proximity: sx9500: fix iio_triggered_buffer_{predisable,postenable} positions iio: core: Add optional symbolic label to device attributes dt-binding: iio: Add optional label property iio: gyro: adis16080: replace mlock with own lock counter: stm32-lptimer-cnt: fix a kernel-doc warning counter: stm32-timer-cnt: fix a kernel-doc warning iio: gyro: adis16130: remove mlock usage MAINTAINERS: add entry for ROHM BH1750 driver dt-bindings: iio: light: bh1750: convert bindings to yaml iio: imu: st_lsm6dsx: add motion report function and call from interrupt iio: imu: st_lsm6dsx: always enter interrupt thread iio: imu: st_lsm6dsx: add wakeup-source option iio: imu: st_lsm6dsx: add motion events iio: imu: st_lsm6dsx: move interrupt thread to core iio: imu: inv_mpu6050: add fifo support for magnetometer data ...
2019-10-13iio: adc: sc27xx: Use devm_hwspin_lock_request_specific() to simplify codeBaolin Wang
Change to use devm_hwspin_lock_request_specific() to help to simplify the cleanup code for drivers requesting one hwlock. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-10Merge tag 'iio-fixes-for-5.4a' of ↵Greg Kroah-Hartman
https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus Jonathan writes: First set of IIO fixes for the 5.4 cycle. * adis16400 - Make sure to free memory on a few failure paths. * adxl372 - Fix wrong fifo depth - Fix wrong indexing of data from the fifo. - Perform a reset at startup to avoid a problem with inconsistent state. * axp288 - This is a fix for a fix. The original fix made sure we kept the configuration from some firmwares to preserve a bias current. Unfortunately it appears the previous behaviour was working around a buggy firmware by overwriting the wrong value it had. Hence a regression was seen. * bmc150 - Fix the centre temperature. This was due to an error in one of the datasheets. * hx711 - Fix an issue where a badly timed interrupt could lead to a control line being high long enough to put the device into a low power state. * meson_sar_adc - Fix a case where the irq was enabled before everything it uses was allocated. * st_lsm6dsx - Ensure we don't set the sensor sensitivity to 0 as it will force all readings to 0. - Fix a wait time for the slave i2c controller when the accelerometer is not enabled. * stm32-adc - Precursor for fix. Move a set of register definitions to a header. - Fix a race when several ADCs are in use with some using interrupts to control the dataflow and some using DMA. * vcnl4000 - Fix a garbage of_match_table in which a string was passed instead of the intended enum. * tag 'iio-fixes-for-5.4a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: iio: Fix an undefied reference error in noa1305_probe iio: light: opt3001: fix mutex unlock race iio: adc: ad799x: fix probe error handling iio: light: add missing vcnl4040 of_compatible iio: light: fix vcnl4000 devicetree hooks iio: imu: st_lsm6dsx: fix waitime for st_lsm6dsx i2c controller iio: adc: axp288: Override TS pin bias current for some models iio: imu: adis16400: fix memory leak iio: imu: adis16400: release allocated memory on failure iio: adc: stm32-adc: fix a race when using several adcs with dma and irq iio: adc: stm32-adc: move registers definitions iio: accel: adxl372: Perform a reset at start up iio: accel: adxl372: Fix push to buffers lost samples iio: accel: adxl372: Fix/remove limitation for FIFO samples iio: adc: hx711: fix bug in sampling of data iio: fix center temperature of bmc150-accel-core iio: imu: st_lsm6dsx: forbid 0 sensor sensitivity iio: adc: meson_saradc: Fix memory allocation order
2019-10-09iio: adc: ad799x: fix probe error handlingMarco Felsch
Since commit 0f7ddcc1bff1 ("iio:adc:ad799x: Write default config on probe and reset alert status on probe") the error path is wrong since it leaves the vref regulator on. Fix this by disabling both regulators. Fixes: 0f7ddcc1bff1 ("iio:adc:ad799x: Write default config on probe and reset alert status on probe") Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-09iio: adc: axp288: Override TS pin bias current for some modelsHans de Goede
Since commit 9bcf15f75cac ("iio: adc: axp288: Fix TS-pin handling") we preserve the bias current set by the firmware at boot. This fixes issues we were seeing on various models, but it seems our old hardcoded 80ųA bias current was working around a firmware bug on at least one model laptop. In order to both have our cake and eat it, this commit adds a dmi based list of models where we need to override the firmware set bias current and adds the one model we now know needs this to it: The Lenovo Ideapad 100S (11 inch version). Fixes: 9bcf15f75cac ("iio: adc: axp288: Fix TS-pin handling") BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=203829 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-09iio: adc: stm32-adc: fix a race when using several adcs with dma and irqFabrice Gasnier
End of conversion may be handled by using IRQ or DMA. There may be a race when two conversions complete at the same time on several ADCs. EOC can be read as 'set' for several ADCs, with: - an ADC configured to use IRQs. EOCIE bit is set. The handler is normally called in this case. - an ADC configured to use DMA. EOCIE bit isn't set. EOC triggers the DMA request instead. It's then automatically cleared by DMA read. But the handler gets called due to status bit is temporarily set (IRQ triggered by the other ADC). So both EOC status bit in CSR and EOCIE control bit must be checked before invoking the interrupt handler (e.g. call ISR only for IRQ-enabled ADCs). Fixes: 2763ea0585c9 ("iio: adc: stm32: add optional dma support") Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-09iio: adc: stm32-adc: move registers definitionsFabrice Gasnier
Move STM32 ADC registers definitions to common header. This is precursor patch to: - iio: adc: stm32-adc: fix a race when using several adcs with dma and irq It keeps registers definitions as a whole block, to ease readability and allow simple access path to EOC bits (readl) in stm32-adc-core driver. Fixes: 2763ea0585c9 ("iio: adc: stm32: add optional dma support") Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-10-09iio: adc: hx711: fix bug in sampling of dataAndreas Klinger
Fix bug in sampling function hx711_cycle() when interrupt occures while PD_SCK is high. If PD_SCK is high for at least 60 us power down mode of the sensor is entered which in turn leads to a wrong measurement. Switch off interrupts during a PD_SCK high period and move query of DOUT to the latest point of time which is at the end of PD_SCK low period. This bug exists in the driver since it's initial addition. The more interrupts on the system the higher is the probability that it happens. Fixes: c3b2fdd0ea7e ("iio: adc: hx711: Add IIO driver for AVIA HX711") Signed-off-by: Andreas Klinger <ak@it-klinger.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-09-21iio: ad7949: fix incorrect SPI xfer lenAndrea Merello
This driver supports 14-bits and 16-bits devices. All of them have a 14-bit configuration registers. All SPI trasfers, for reading AD conversion results and for writing the configuration register, fit in two bytes. The driver always uses 4-bytes xfers which seems at least pointless (maybe even harmful). This patch trims the SPI xfer len and the buffer size to two bytes. Signed-off-by: Andrea Merello <andrea.merello@gmail.com> Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-09-18Merge tag 'staging-5.4-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging and IIO driver updates from Greg KH: "Here is the big staging/iio driver update for 5.4-rc1. Lots of churn here, with a few driver/filesystems moving out of staging finally: - erofs moved out of staging - greybus core code moved out of staging Along with that, a new filesytem has been added: - extfat to provide support for those devices requiring that filesystem (i.e. transfer devices to/from windows systems or printers) Other than that, there a number of new IIO drivers, and lots and lots and lots of staging driver cleanups and minor fixes as people continue to dig into those for easy changes. All of these have been in linux-next for a while with no reported issues" * tag 'staging-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (453 commits) Staging: gasket: Use temporaries to reduce line length. Staging: octeon: Avoid several usecases of strcpy staging: vhciq_core: replace snprintf with scnprintf staging: wilc1000: avoid twice IRQ handler execution for each single interrupt staging: wilc1000: remove unused interrupt status handling code staging: fbtft: make several arrays static const, makes object smaller staging: rtl8188eu: make two arrays static const, makes object smaller staging: rtl8723bs: core: Remove Macro "IS_MAC_ADDRESS_BROADCAST" dt-bindings: anybus-controller: move to staging/ tree staging: emxx_udc: remove local TRUE/FALSE definition staging: wilc1000: look for rtc_clk clock staging: dt-bindings: wilc1000: add optional rtc_clk property staging: nvec: make use of devm_platform_ioremap_resource staging: exfat: drop unused function parameter Staging: exfat: Avoid use of strcpy staging: exfat: use integer constants staging: exfat: cleanup spacing for casts staging: exfat: cleanup spacing for operators staging: rtl8723bs: hal: remove redundant variable n staging: pi433: Fix typo in documentation ...
2019-09-15iio: ad7949: kill pointless "readback"-handling codeAndrea Merello
The device could be configured to spit out also the configuration word while reading the AD result value (in the same SPI xfer) - this is called "readback" in the device datasheet. The driver checks if readback is enabled and it eventually adjusts the SPI xfer length and it applies proper shifts to still get the data, discarding the configuration word. The readback option is actually never enabled (the driver disables it), so the said checks do not serve for any purpose. Since enabling the readback option seems not to provide any advantage (the driver entirely sets the configuration word without relying on any default value), just kill the said, unused, code. Signed-off-by: Andrea Merello <andrea.merello@gmail.com> Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-09-08IIO: Ingenic JZ47xx: Add support for JZ4770 SoC ADC.Artur Rojek
Add support for the ADC hardware present on Ingenic JZ4770 SoC. Signed-off-by: Artur Rojek <contact@artur-rojek.eu> Tested-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-09-08iio: adc: meson_saradc: Fix memory allocation orderRemi Pommarel
meson_saradc's irq handler uses priv->regmap so make sure that it is allocated before the irq get enabled. This also fixes crash when CONFIG_DEBUG_SHIRQ is enabled, as device managed resources are freed in the inverted order they had been allocated, priv->regmap was freed before the spurious fake irq that CONFIG_DEBUG_SHIRQ adds called the handler. Fixes: 3af109131b7eb8 ("iio: adc: meson-saradc: switch from polling to interrupt mode") Reported-by: Elie Roudninski <xademax@gmail.com> Signed-off-by: Remi Pommarel <repk@triplefau.lt> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Tested-by: Elie ROUDNINSKI <xademax@gmail.com> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-09-08iio: adc: ad_sigma_delta: Export ad_sd_calibrateMircea Caprioru
This patch exports the ad_sd_calibrate function in order to be able to call it from outside ad_sigma_delta. There are cases where the option to calibrate one channel at a time is necessary (ex. system calibration for zero scale and full scale). Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-09-03Merge tag 'iio-for-5.4b-take3' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: Second set of new device support, cleanups and features for IIO in the 5.4 cycle Revised pull request to fix up a missing Signed-off-by and roll in a fix in the lsm9ds1 support after I broke it when applying. Revised again because the fix changed a hash meaning a fix that previously followed it now had the wrong fixes tag. A few fixes in here that could have gone a faster path but aren't quite worth the rush for 5.3. New device support * ad7606 - Support the ad7606b which adds a software controlled mode alongside the pin controlled only approach of the ad7606. Including dt-bindings. * lsm6dsx - Add support for the gyro and accelerometer part of the lsm9ds1 which is a compound device also including a magnetometer (st_sensors driver). Includes bindings and precursor rework of the driver. Features * ad7192 - Add support for low pass filter control. - DT binding docs. Cleanups and minor fixes * MAINTAINERS - Fix a typo in a path. - Add entry for ad7606 * ad5380 - Fix a failure to dereference a pointer before atempting to assign the value. * ad7192 - Drop platform data as not used in mainline and we now have full DT bindings. * ad7606 - YAML conversion for dt-bindings. * adis16240 - Rework write_raw to make it more readable using GENMASK. * adis16460 - Fix and issue with an unsigned variable holding potential negatives. * cros_ec - Fix missing default of calibration vector so that we get 'something' before calibration is complete on a given axis. * hid-sensors - Use int_pow instead of opencoding. * isl29501 - rename dt-binding docs to include renesas inline with other renesas parts and general current convention. * kxcjk1013 - Improve comments on the 'unusual' ACPI ids used to identify which sensor is which in certain laptops. * lsm6dsx - Add one bit to the fifo status masks for a number of parts. - Drop a reserved entry from the sensitivity values to tidy up interface. - Use core conversion macro from G to m/s^2 for lsm9ds1 to make it easier to relate to the datasheet and consistent with other parts supported. * max1027 - Use device managed APIs to avoid manual error handling and cleanup. * rfd77402 - Typo in Kconfig help. * sc27xx - Switch to polling mode from interrupts as interrupt handling typically to slow for very short sleeps. * st-sensors - Fix some missing selects for regmap. * tools - Add a .gitignore containing the binary outputs. * tag 'iio-for-5.4b-take3' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (27 commits) iio: imu: st_lsm6dsx: rely on IIO_G_TO_M_S_2 for gain definition for LSM9DS1 iio: imu: st_lsm6dsx: remove invalid gain value for LSM9DS1 iio: cros_ec: set calibscale for 3d MEMS to unit vector iio: dac: ad5380: fix incorrect assignment to val iio: imu: st_lsm6dsx: Fix FIFO diff mask for tagged fifo dt-bindings: iio: imu: st_lsm6dsx: add lsm9ds1 device bindings iio: imu: st_lsm6dsx: add support for accel/gyro unit of lsm9ds1 iio: imu: st_lsm6dsx: move register definitions to sensor_settings struct iio: imu: st_lsm6dsx: introduce update_fifo function pointer dt-bindings: iio: light: isl29501: Rename bindings documentation file Kconfig: Fix the reference to the RFD77402 ToF sensor in the 'help' section iio: st_sensors: Fix build error dt-bindings: iio: adc: Add AD7606B ADC documentation dt-bindings: iio: adc: Migrate AD7606 documentation to yaml MAINTAINERS: Add Beniamin Bia for AD7606 driver iio: adc: ad7606: Add support for AD7606B ADC tools: iio: add .gitignore iio: adc: sc27xx: Change to polling mode to read data iio: hid-sensor-attributes: Convert to use int_pow() iio: adc: max1027: Use device-managed APIs ...
2019-09-03hwmon: Remove ads1015 driverGuenter Roeck
A driver for ADS1015 with more functionality is available in the iio subsystem. Remove the hwmon driver as duplicate. If the chip is used for hardware monitoring, the iio->hwmon bridge should be used. Cc: Dirk Eibach <eibach@gdsys.de> Link: https://lore.kernel.org/r/1562004758-13025-1-git-send-email-linux@roeck-us.net Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-08-25iio: adc: ad7606: Add support for AD7606B ADCStefan Popa
The AD7606B is a 16-bit ADC that supports simultaneous sampling of 8 channels. It is pin compatible to AD7606, but adds extra modes by writing to the register map. The AD7606B can be configured to work in software mode by setting all oversampling pins to high. This mode is selected by default. The oversampling ratio is configured from the OS_MODE register (address 0x08) with the addition of OS=128 and OS=256 that were not available in hardware mode. The device is configured to output data on a single spi channel, but this configuration must be done right after restart. That is why the delay was removed for devices which doesn't require it. Moreover, in software mode, the range gpio has no longer its function. Instead, the scale can be configured individually for each channel from the RANGE_CH registers (address 0x03 to 0x06). Besides the already supported ±10 V and ±5 V ranges, software mode can also accommodate the ±2.5 V range. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Co-developed-by: Beniamin Bia <beniamin.bia@analog.com> Signed-off-by: Beniamin Bia <beniamin.bia@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-08-19Merge 5.3-rc5 into staging-nextGreg Kroah-Hartman
We need the staging fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-18iio: adc: sc27xx: Change to polling mode to read dataFreeman Liu
On Spreadtrum platform, the headphone will read one ADC channel multiple times to identify the headphone type, and the headphone identification is sensitive of the ADC reading time. And we found it will take longer time to reading ADC data by using interrupt mode comparing with the polling mode, thus we should change to polling mode to improve the efficiency of reading data, which can identify the headphone type successfully. Signed-off-by: Freeman Liu <freeman.liu@unisoc.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-08-18iio: adc: max1027: Use device-managed APIsChuhong Yuan
Use device-managed APIs to simplify the code. Signed-off-by: Chuhong Yuan <hslester96@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-08-12Merge tag 'iio-for-5.4a' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: First set of new device support, features and cleanups for IIO in the 5.4 cycle Note includes a merge from i3c tree to get support needed for stm_lsm6dsx driver support for l3c devices. Done from immutable branch. A counter subsystem patche in here as well. Alongside the new device support (which is always good), Chuhong's work on using devres managed APIs has cleaned up a number of drivers. New device support * adis16460 - New driver based on ADIS framework which needed addition of support for cs_change_delay. Includes device tree binding. * cros_ec - Support fo the veyron-minnie which uses an older interface. * lsm6dsx - Support for LSM6DSTR-C gyro + magnetometer sensor (new IDs mainly) - Support for ISM330DHCX acc + gyro sensor (extensive rework needed!) * Maxim 5432 - New driver support MAX5432-MAX5435 family of potentiometers. * noa1305 - New driver for this ON Semiconductor Ambient light sensor. Features and cleanups * tree wide - Drop error prints after platform_get_irq as already prints errors internally if any occur. * docs - Document mounting matrix. - Fix a missing newline at end of file. * ad2s1210 - Switch to device managed APIs for all of probe and drop explicit remove. * ad7192 - Add of_device_id array to explicity handling DT bindings. * ad7606 - Lots of rework leading to support for software configure modes in ad7616 parts. - Debugfs register access support. * am2315 - Switch to device managed APIs for all of probe and drop explicit remove. * apds9960 - Typo in module description. * cm36651 - Convert to i2c_new_dummy_device. - Swithc to device managed APIs for all of probe adn drop explicit remove. * cros_ec - Calibscale support for accel, gyro and magnetometer. - Tidy up some error codes to return the error from the stack rather than -EIO. - Determine protocol version. - Add a sign vector to the core to fix sensor rotation if necessary. Cannot just be done with mount matrix as already in use in many devices. - Tidy up INFO_SCALE being in both the separate and shared lists. - Drop a lot of dplicate code from the cros-ec-accel-legacy driver and use the core provided code instead. - Make frequency range available to userspace. * counter / ftm-quaddec - Switch to device managed APIs for all of probe adn drop explicit remove. * hdc100x - Switch to device managed APIs for all of probe and drop explicit remove. * hi8435 - Use gpiod_set_value_cansleep as we don't care here and there is a board out there where it needs to sleep. - Switch to device managed APIs for all of probe and drop explict remove. * hp03 - Convert to i2c_new_dummy_device. * maxim thermocouple - Switch to device managed APIs for all of probe and drop explicit remove. * mmc35240 - Fix typo in constant naming. * mpu6050 - Use devm_add_action_or_reset in place of explicit error handling. - Make text in Kconfig more explicit about which parts are supported. * mxc4005 - Switch to device managed APIs for all of probe and drop explicit remove. * pms7003 - Convert device tree bindings to yaml. - Add a MAINTAINERS entry * sc27xx - Introduce a local struct device *dev pointer to avoid lots of deref. - Use devm_add_action_or_reset in place of explicit error handling. * sca3000 - Typo fix in naming. * si1145 - Switch to device managed APIs for all of probe and drop explicit remove. * st_sensors - Lots of rework to enable switch to regmap. - Regmap conversion at the end. - Tidy up some inconsistencies in buffer setup ops. - Tidy up an oddity by dropping get_irq_data_ready function in favour of direct access. - Stop allocating buffer in buffer enable in favour of just embedding a large enough constant size buffer in the iio_priv accessed structure. * st_lsm6dsx - l3c device support (LSM6DSO and LSM6DSR) - tidy up irq return logic which was strangely written. - fix up an ABI quirk where this driver used separate scale attributes, even though they were always shared by type. * stk33xx - Device tree bindings include manufacturer ID. * stm32-adc - Add control for supply to analog switches including DT bindings. * stm32 timer - Drop the quadrature mode support. Believed there were no users so take this opportunity to drop this unwanted ABI. * tsl2772 - Switch to device mangage APIs for all of probe and drop explicit remove. - Use regulator_bulk_* APIs to reduce repitition. * veml6070 - Convert to i2c_new_dummy_device. * tag 'iio-for-5.4a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (84 commits) iio: hi8435: Drop hi8435_remove() by using devres for remaining elements iio: hi8435: Use gpiod_set_value_cansleep() iio:st_sensors: remove buffer allocation at each buffer enable iio: imu: inv_mpu6050: be more explicit on supported chips iio: light: noa1305: Add support for NOA1305 dt-bindings: Add binding document for NOA1305 iio: remove get_irq_data_ready() function pointer and use IRQ number directly iio: imu: st_lsm6dsx: make IIO_CHAN_INFO_SCALE shared by type iio: tsl2772: Use regulator_bulk_() APIs iio: tsl2772: Use devm_iio_device_register iio: tsl2772: Use devm_add_action_or_reset for tsl2772_chip_off iio: tsl2772: Use devm_add_action_or_reset iio: Remove dev_err() usage after platform_get_irq() iio: light: si1145: Use device-managed APIs iio:pressure: preenable/postenable/predisable fixup for ST press buffer iio:magn: preenable/postenable/predisable fixup for ST magn buffer iio:gyro: preenable/postenable/predisable fixup for ST gyro buffer iio:accel: preenable/postenable/predisable fixup for ST accel buffer dt-bindings: iio: imu: st_lsm6dsx: add ism330dhcx device bindings iio: imu: st_lsm6dsx: add support to ISM330DHCX ...
2019-08-11iio: hi8435: Drop hi8435_remove() by using devres for remaining elementsAndrey Smirnov
Convert the remainder of hi8435_probe() to use devres and get rid of hi8435_remove(). Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Chris Healy <cphealy@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-08-11iio: hi8435: Use gpiod_set_value_cansleep()Andrey Smirnov
Use gpiod_set_value_cansleep() instead of gpiod_set_value() to support the case when reset pin is connected to a GPIO expander. See ZII VF610 SCU4 AIB for one such example. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: linux-iio@vger.kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Cc: Chris Healy <cphealy@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-08-05iio: adc: max9611: Fix temperature reading in probeJacopo Mondi
The max9611 driver reads the die temperature at probe time to validate the communication channel. Use the actual read value to perform the test instead of the read function return value, which was mistakenly used so far. The temperature reading test was only successful because the 0 return value is in the range of supported temperatures. Fixes: 69780a3bbc0b ("iio: adc: Add Maxim max9611 ADC driver") Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-08-05iio: Remove dev_err() usage after platform_get_irq()Stephen Boyd
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Jonathan Cameron <jic23@kernel.org> Cc: Hartmut Knaack <knaack.h@gmx.de> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net> Cc: linux-iio@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-28iio: adc: ad7606: Add debug mode for ad7616Beniamin Bia
Support for register access was added for devices which have software mode. Signed-off-by: Beniamin Bia <beniamin.bia@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-28iio: adc: ad7606: Add support for software mode for ad7616Beniamin Bia
Support for ad7616 running in software was added. In order to activate the software mode, HW_RNGSEL pins must be pulled low. Oversampling and input ranges are now configured in corresponding registers. Ad7616 has multiple scale options when it is configured in software mode. Also, in order to support multiple devices in software mode, the spi calculation of registers address must be generic. Because the length of address and bit which specifies the read/write operation is different for every device, calculation of address was made generic. Signed-off-by: Beniamin Bia <beniamin.bia@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-28iio: adc: ad7606: Allow reconfigration after resetBeniamin Bia
According to datasheet, ad7616 require at least 15ms after a restart to fully reconfigure and being able to receive new commands via spi. Signed-off-by: Beniamin Bia <beniamin.bia@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-28iio: adc: ad7606: Move spi dependent features to spi fileBeniamin Bia
Because software mode and register access are only available in spi, they were moved in spi file and are accessbile via bops structure. The write_os/scale will be overwritten by sw_mode_config function. This patch was made in order to support devices in software mode without making the driver dependent to spi and increase the abstraction of the core. Signed-off-by: Beniamin Bia <beniamin.bia@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-28iio: adc: ad7606: Move common channel definition to headerBeniamin Bia
The common channel definition which are going to be used by both core file but also spi file, were moved in header file. Some devices have different channel definitions when are used in software mode, feature available only with spi, and those definitions will be added in spi file. Signed-off-by: Beniamin Bia <beniamin.bia@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-27iio: adc: gyroadc: fix uninitialized return codeArnd Bergmann
gcc-9 complains about a blatant uninitialized variable use that all earlier compiler versions missed: drivers/iio/adc/rcar-gyroadc.c:510:5: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized] Return -EINVAL instead here and a few lines above it where we accidentally return 0 on failure. Cc: stable@vger.kernel.org Fixes: 059c53b32329 ("iio: adc: Add Renesas GyroADC driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-27iio: adc: stm32-adc: add analog switches supply controlFabrice Gasnier
On stm32h7 and stm32mp1, the ADC inputs are multiplexed with analog switches which have reduced performances when their supply is below 2.7V (vdda by default): - 3.3V embedded booster can be used, to get full ADC performances (increases power consumption). - vdd supply can be selected if above 2.7V by setting ANASWVDD syscfg bit, on STM32MP1 only. Make this optional, since this is a trade-off between analog performance and power consumption. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-27iio: adc: sc27xx: Replace devm_add_action() followed by failure action with ↵Fuqian Huang
devm_add_action_or_reset() devm_add_action_or_reset() is introduced as a helper function which internally calls devm_add_action(). If devm_add_action() fails then it will execute the action mentioned and return the error code. This reduce source code size (avoid writing the action twice) and reduce the likelyhood of bugs. Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2019-07-27iio: adc: sc27xx: Introduce local variable 'struct device *dev'Fuqian Huang
Introduce local variable 'struct device *dev' and use it instead of dereferencing it repeatly. Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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