summaryrefslogtreecommitdiff
path: root/drivers/iio
AgeCommit message (Collapse)AuthorFilesLines
2022-02-11iio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTLMathias Krause1-3/+11
If we fail to copy the just created file descriptor to userland, we try to clean up by putting back 'fd' and freeing 'ib'. The code uses put_unused_fd() for the former which is wrong, as the file descriptor was already published by fd_install() which gets called internally by anon_inode_getfd(). This makes the error handling code leaving a half cleaned up file descriptor table around and a partially destructed 'file' object, allowing userland to play use-after-free tricks on us, by abusing the still usable fd and making the code operate on a dangling 'file->private_data' pointer. Instead of leaving the kernel in a partially corrupted state, don't attempt to explicitly clean up and leave this to the process exit path that'll release any still valid fds, including the one created by the previous call to anon_inode_getfd(). Simply return -EFAULT to indicate the error. Fixes: f73f7f4da581 ("iio: buffer: add ioctl() to support opening extra buffers for IIO device") Cc: stable@kernel.org Cc: Jonathan Cameron <jic23@kernel.org> Cc: Alexandru Ardelean <ardeleanalex@gmail.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Nuno Sa <Nuno.Sa@analog.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mathias Krause <minipli@grsecurity.net> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-23Merge tag 'bitmap-5.17-rc1' of git://github.com/norov/linuxLinus Torvalds1-1/+1
Pull bitmap updates from Yury Norov: - introduce for_each_set_bitrange() - use find_first_*_bit() instead of find_next_*_bit() where possible - unify for_each_bit() macros * tag 'bitmap-5.17-rc1' of git://github.com/norov/linux: vsprintf: rework bitmap_list_string lib: bitmap: add performance test for bitmap_print_to_pagebuf bitmap: unify find_bit operations mm/percpu: micro-optimize pcpu_is_populated() Replace for_each_*_bit_from() with for_each_*_bit() where appropriate find: micro-optimize for_each_{set,clear}_bit() include/linux: move for_each_bit() macros from bitops.h to find.h cpumask: replace cpumask_next_* with cpumask_first_* where appropriate tools: sync tools/bitmap with mother linux all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate cpumask: use find_first_and_bit() lib: add find_first_and_bit() arch: remove GENERIC_FIND_FIRST_BIT entirely include: move find.h from asm_generic to linux bitops: move find_bit_*_le functions from le.h to find.h bitops: protect find_first_{,zero}_bit properly
2022-01-18Merge tag 'pm-5.17-rc1-2' of ↵Linus Torvalds3-11/+4
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management updates from Rafael Wysocki: "This is a continuation of the rework of device power management macros used for declaring device power management callbacks (Paul Cercueil)" * tag 'pm-5.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: iio: pressure: bmp280: Use new PM macros PM: runtime: Add EXPORT[_GPL]_RUNTIME_DEV_PM_OPS macros PM: runtime: Add DEFINE_RUNTIME_DEV_PM_OPS() macro PM: core: Add EXPORT[_GPL]_SIMPLE_DEV_PM_OPS macros PM: core: Remove static qualifier in DEFINE_SIMPLE_DEV_PM_OPS macro PM: core: Remove DEFINE_UNIVERSAL_DEV_PM_OPS() macro
2022-01-15all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriateYury Norov1-1/+1
find_first{,_zero}_bit is a more effective analogue of 'next' version if start == 0. This patch replaces 'next' with 'first' where things look trivial. Signed-off-by: Yury Norov <yury.norov@gmail.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
2022-01-12iio: pressure: bmp280: Use new PM macrosPaul Cercueil3-11/+4
Use the new EXPORT_RUNTIME_DEV_PM_OPS() macro. It allows the underlying dev_pm_ops struct as well as the suspend/resume callbacks to be detected as dead code in the case where CONFIG_PM is disabled, without having to wrap everything inside #ifdef CONFIG_PM guards. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-12-28iio: chemical: sunrise_co2: set val parameter only on successTom Rix1-2/+2
Clang static analysis reports this representative warning sunrise_co2.c:410:9: warning: Assigned value is garbage or undefined *val = value; ^ ~~~~~ The ealier call to sunrise_read_word can fail without setting value. So defer setting val until we know the read was successful. Fixes: c397894e24f1 ("iio: chemical: Add Senseair Sunrise 006-0-007 driver") Signed-off-by: Tom Rix <trix@redhat.com> Link: https://lore.kernel.org/r/20211224150833.3278236-1-trix@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-23iio: frequency: admv1013: add support for ADMV1013Antoniu Miclaus3-0/+667
The ADMV1013 is a wideband, microwave upconverter optimized for point to point microwave radio designs operating in the 24 GHz to 44 GHz radio frequency (RF) range. Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADMV1013.pdf Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20211221112206.97066-1-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-22Merge tag 'iio-for-5.17a' of ↵Greg Kroah-Hartman103-347/+6400
https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next Jonathan writes: 1st set of IIO new device support, features and cleanup for 5.17 Includes some fixes that were either late breaking, low priority or complex enough to not be good to rush in late in the cycle. Tree rebased today to fix up some trivial issues + pull in a fix that was previously on the fixes-togreg branch. Vast majority have been in linux-next for some time now. New device support * adi,ad7293 - New driver and bindings for this Power Amplifier drain current controller. A complex device with various related monitoring functions. * adi,ad75513R - New driver and bindings for this combined ADC and DAC device. - A few follow up fixes. * adi,admv8818 - New driver (and type) for this 2-18GHz filter device. Includes bindings and ABI documentation to allow clk_notifier based auto adjustment of the filters in appropriate applications. * liteon,ltr501 - Support for the ltr303. ID and chip specific info table. * xilinx,ams - New generic firmware function fwnode_iomap() as used in this driver. - New driver and bindings for this ADC and on-chip sensors as found in various Xilinx devices. Core * Introduced IIO_VAL_INT_64 which uses val and val2 in IIO callbacks to form a 64 bit integer when higher precision needed. * Allow IIO_ENUM_AVAILABLE to be used with different shared values. * Fix a long term issue with scheduling whilst atomic when iio_trig_poll() is called but no trigger consumers are actually enabled and hence the trigger may be reenabled from the interrupt handler. Seen in the wild on the tsc2046. * Mark iio_device_type const. * buffer: Use a separate index variable to simplify code. * buffer-dma: Clear out unused struct iio_buffer_block * buffer-dmaengine: Switch to cheaper round_down() as power of 2 values. Tests/tools * format_value - Check against NULL returns from allocations in tests. - Add IIO_VAL_INT_64 test case. * event_monitor - Flush the output after event to given more consistent latency when tool output piped to other programs. Driver Features * axp20x - Add support for NTC thermistor channel and document TS pin binding. * arm,scmi - Add reading of raw channel values (using IIO_VAL_INT_64) * liteon,ltr501 - Add proximity-near-level support and dt-binding. Tree wide cleanup * Remove no-op trigger ops from multiple drivers. * Stop using dev_get_drvdata() on the iio_dev->dev in various drivers and then stop assigning it to allow this to be used for other purposes. We can always get to the indio_dev using dev_to_iio_dev() which is a container_of() based approach. Also cleanup up some related unnecessary convoluted cases. - atmel,at91-sam5d2 - nxp,imx7d - meas,ms5611 - st,st_sensors * Where available (or easy to introduce) use the scan_type.* values in place of a second copy for read_raw and similar paths. - adi,ad7266 - bosch,bma220 - fsl,mac3110 - fsl,mma7455 - fsl,mpl3115 - kionix,kcjk-1013 - sensortek,stk8ba50 - sensortek,stk8312 - ti,adc12138 - ti,ads1015 - vti,sca3000 - xilinx,xadc-core * Switch drives over to generic firmware properties including appropriate header changes to avoid including of.h - Various DACs had false CONFIG_OF dependencies. - dpot-dac - envelope-detector - adi,ad5755 - adi,ad5758 - capella,cm3605 - maxim,max9611 - microchip,mcp41010 - microchip,mcp3911 - ti,adc12138 * Trivial clang warning fixes for W=1 warnings. Driver specific cleanup and minor fixes * adi,ad7606 - Comment fixes. * ams,ad3935 - Drop pointless cast to the same type. * atmel,at91-sama5d2 - Fix wrong cast of iio_dev->dev to platform_device that happened to be harmless. * fsl,mma7660 - Stop i2c remove() function returning an error code. Part of a rework to eventually stop returning anything from these. * fsl,mma8452 - Use correct type for local irqreturn_t. * nxp,imx8mq - Maintainer email address update. * nxp,lpc18xx_adc - Ensure clk_prepare_enable() called before clk_get_rate(). - Switch of.h for mod_devicetable.h to reflect no of specific functions, just the id table. * renesas,rzg2l - Drop a dev_err() that just duplicates error printed in platform_get_irq() * sgx,vz89x - Drop pointless cast. * st,lsm6dsx - Make it possible to disable the sensorhub from DT to avoid a corner case where the address of a slave device many be accidentally modified. * st,stm32-adc - Stop leaking an of_node in an error path. * st,stmp2 - Avoid wrong sized type for bit field which could result in over-reading (harmless). Precursor to enabling -Warray-bounds. * ti,adc081c - Put back some ACPI support for non standards compliant ADC081C ID because it is known to be in the wild on some Aaeon boards. * ti,ads8688 - Cleanup redundant local ret variable assignment. * ti,ina2xx-adc - Use helper macro kthread_run() to replace some boilerplate. - Avoid double reference counting. - Drop pointless cast. * xilinx,xadc - Make the IRQ optional as not always wired to the host system. * tag 'iio-for-5.17a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (103 commits) iio: adc: ti-adc081c: Partial revert of removal of ACPI IDs iio:addac:ad74413r: Fix uninitialized ret in a path that won't be hit. MAINTAINERS: Add maintainer for xilinx-ams dt-bindings: iio: adc: Add Xilinx AMS binding documentation iio: adc: Add Xilinx AMS driver device property: Add fwnode_iomap() iio:accel:kxcjk-1013: Mark struct __maybe_unused to avoid warning. iio:accel:bmc150: Mark structure __maybe_unused as only needed with for pm ops. iio:dummy: Drop set but unused variable len. iio:magn:ak8975: Suppress clang W=1 warning about pointer to enum conversion. iio:imu:inv_mpu6050: Suppress clang W=1 warning about pointer to enum conversion. iio:imu:inv_icm42600: Suppress clang W=1 warning about pointer to enum conversion. iio:dac:mcp4725: Suppress clang W=1 warning about pointer to enum conversion. iio:amplifiers:hmc425a: Suppress clang W=1 warning about pointer to enum conversion. iio:adc:ti-ads1015: Suppress clang W=1 warning about pointer to enum conversion. iio:adc:rcar: Suppress clang W=1 warning about pointer to enum conversion. iio:adc:ina2xx-adc: Suppress clang W=1 warning about pointer to enum conversion. iio:accel:bma180: Suppress clang W=1 warning about pointer to enum conversion. drivers:iio:dac: Add AD3552R driver support dt-bindings: iio: dac: Add adi,ad3552r.yaml ...
2021-12-21iio: adc: ti-adc081c: Partial revert of removal of ACPI IDsJonathan Cameron1-5/+17
Unfortuanately a non standards compliant ACPI ID is known to be in the wild on some AAEON boards. Partly revert the removal of these IDs so that ADC081C will again work + add a comment to that affect for future reference. Whilst here use generic firmware properties rather than the ACPI specific handling previously found in this driver. Reported-by: Kunyang Fan <Kunyang_Fan@aaeon.com.tw> Fixes: c458b7ca3fd0 ("iio:adc:ti-adc081c: Drop ACPI ids that seem very unlikely to be official.") Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Tested-by: Kunyang Fan <Kunyang_Fan@aaeon.com.tw> #UP-extremei11 Link: https://lore.kernel.org/r/20211205172728.2826512-1-jic23@kernel.org Cc: <Stable@vger.kernel.org>
2021-12-21iio:addac:ad74413r: Fix uninitialized ret in a path that won't be hit.Jonathan Cameron1-1/+1
I don't believe it's possible to hit this, because we drop out of __iio_update_buffers() earlier in the event of an empty list. However, that is not visible to the compiler so lets return an error if we do hit the loop with an empty bitmask. Fixes: 5d97d9e9a703 ("iio: addac: ad74413r: fix off by one in ad74413r_parse_channel_config()") Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Cosmin Tanislav <cosmin.tanislav@analog.com> Link: https://lore.kernel.org/r/20211220164726.3136307-1-jic23@kernel.org
2021-12-21iio: adc: Add Xilinx AMS driverAnand Ashok Dumbre3-0/+1467
The AMS includes an ADC as well as on-chip sensors that can be used to sample external voltages and monitor on-die operating conditions, such as temperature and supply voltage levels. The AMS has two SYSMON blocks. PL-SYSMON block is capable of monitoring off chip voltage and temperature. PL-SYSMON block has DRP, JTAG and I2C interface to enable monitoring from an external master. Out of these interfaces currently only DRP is supported. Other block PS-SYSMON is memory mapped to PS. The AMS can use internal channels to monitor voltage and temperature as well as one primary and up to 16 auxiliary channels for measuring external voltages. The voltage and temperature monitoring channels also have event capability which allows to generate an interrupt when their value falls below or raises above a set threshold. Co-developed-by: Manish Narani <manish.narani@xilinx.com> Signed-off-by: Manish Narani <manish.narani@xilinx.com> Signed-off-by: Anand Ashok Dumbre <anand.ashok.dumbre@xilinx.com> Link: https://lore.kernel.org/r/20211203212358.31444-4-anand.ashok.dumbre@xilinx.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-21iio:accel:kxcjk-1013: Mark struct __maybe_unused to avoid warning.Jonathan Cameron1-1/+1
This structure is only used in PM ops, so may not be used depending on build configuration. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-13-jic23@kernel.org
2021-12-21iio:accel:bmc150: Mark structure __maybe_unused as only needed with for pm ops.Jonathan Cameron1-1/+1
If CONFIG_PM not set then clang warns this structure is unused. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-12-jic23@kernel.org
2021-12-21iio:dummy: Drop set but unused variable len.Jonathan Cameron1-2/+0
Not sure what the thinking was here, as lost to history, but the variable is clearly not used so get rid of it. Warning seen with clang W=1 tests (may be present with other compilers and build options). Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-11-jic23@kernel.org
2021-12-21iio:magn:ak8975: Suppress clang W=1 warning about pointer to enum conversion.Jonathan Cameron1-1/+1
Cast to a uintptr_t rather than directly to the enum. As per the discussion in below linked media patch. Link: https://lore.kernel.org/linux-media/CAK8P3a2ez6nEw4d+Mqa3XXAz0RFTZHunqqRj6sCt7Y_Eqqs0rw@mail.gmail.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Cc: Jonathan Albrieux <jonathan.albrieux@gmail.com> Cc: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-10-jic23@kernel.org
2021-12-21iio:imu:inv_mpu6050: Suppress clang W=1 warning about pointer to enum ↵Jonathan Cameron2-2/+2
conversion. Cast to a uintptr_t rather than directly to the enum. As per the discussion in below linked media patch. Link: https://lore.kernel.org/linux-media/CAK8P3a2ez6nEw4d+Mqa3XXAz0RFTZHunqqRj6sCt7Y_Eqqs0rw@mail.gmail.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Cc: Baptiste Mansuy <bmansuy@invensense.com> Cc: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com> Cc: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-9-jic23@kernel.org
2021-12-21iio:imu:inv_icm42600: Suppress clang W=1 warning about pointer to enum ↵Jonathan Cameron2-2/+2
conversion. Cast to a uintptr_t rather than directly to the enum. As per the discussion in below linked media patch. Link: https://lore.kernel.org/linux-media/CAK8P3a2ez6nEw4d+Mqa3XXAz0RFTZHunqqRj6sCt7Y_Eqqs0rw@mail.gmail.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Cc: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-8-jic23@kernel.org
2021-12-21iio:dac:mcp4725: Suppress clang W=1 warning about pointer to enum conversion.Jonathan Cameron1-1/+1
Cast to a uintptr_t rather than directly to the enum. As per the discussion in below linked media patch. Link: https://lore.kernel.org/linux-media/CAK8P3a2ez6nEw4d+Mqa3XXAz0RFTZHunqqRj6sCt7Y_Eqqs0rw@mail.gmail.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-7-jic23@kernel.org
2021-12-21iio:amplifiers:hmc425a: Suppress clang W=1 warning about pointer to enum ↵Jonathan Cameron1-1/+1
conversion. Cast to a uintptr_t rather than directly to the enum. As per the discussion in below linked media patch. Link: https://lore.kernel.org/linux-media/CAK8P3a2ez6nEw4d+Mqa3XXAz0RFTZHunqqRj6sCt7Y_Eqqs0rw@mail.gmail.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-6-jic23@kernel.org
2021-12-21iio:adc:ti-ads1015: Suppress clang W=1 warning about pointer to enum conversion.Jonathan Cameron1-1/+1
Cast to a uintptr_t rather than directly to the enum. As per the discussion in below linked media patch. Link: https://lore.kernel.org/linux-media/CAK8P3a2ez6nEw4d+Mqa3XXAz0RFTZHunqqRj6sCt7Y_Eqqs0rw@mail.gmail.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-5-jic23@kernel.org
2021-12-21iio:adc:rcar: Suppress clang W=1 warning about pointer to enum conversion.Jonathan Cameron1-2/+1
Cast to a uintptr_t rather than directly to the enum. As per the discussion in below linked media patch. Link: https://lore.kernel.org/linux-media/CAK8P3a2ez6nEw4d+Mqa3XXAz0RFTZHunqqRj6sCt7Y_Eqqs0rw@mail.gmail.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-4-jic23@kernel.org
2021-12-21iio:adc:ina2xx-adc: Suppress clang W=1 warning about pointer to enum conversion.Jonathan Cameron1-1/+1
Cast to a uintptr_t rather than directly to the enum. As per the discussion in below linked media patch. Link: https://lore.kernel.org/linux-media/CAK8P3a2ez6nEw4d+Mqa3XXAz0RFTZHunqqRj6sCt7Y_Eqqs0rw@mail.gmail.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-3-jic23@kernel.org
2021-12-16iio:accel:bma180: Suppress clang W=1 warning about pointer to enum conversion.Jonathan Cameron1-1/+1
Cast to a uintptr_t rather than directly to the enum. As per the discussion in below linked media patch. Link: https://lore.kernel.org/linux-media/CAK8P3a2ez6nEw4d+Mqa3XXAz0RFTZHunqqRj6sCt7Y_Eqqs0rw@mail.gmail.com/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Cc: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211128172445.2616166-2-jic23@kernel.org
2021-12-16drivers:iio:dac: Add AD3552R driver supportMihail Chindris3-0/+1149
The AD3552R-16 is a low drift ultrafast, 16-bit accuracy, current output digital-to-analog converter (DAC) designed to generate multiple output voltage span ranges. The AD3552R-16 operates with a fixed 2.5V reference. Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ad3552r.pdf Signed-off-by: Mihail Chindris <mihail.chindris@analog.com> Link: https://lore.kernel.org/r/20211213110825.244347-3-mihail.chindris@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio:filter:admv8818: add support for ADMV8818Antoniu Miclaus3-0/+676
The ADMV8818-EP is a fully monolithic microwave integrated circuit (MMIC) that features a digitally selectable frequency of operation. The device features four independently controlled high- pass filters (HPFs) and four independently controlled low-pass filters (LPFs) that span the 2 GHz to 18 GHz frequency range. Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/admv8818-ep.pdf Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio: add filter subfolderAntoniu Miclaus4-0/+16
Add filter subfolder for IIO devices that handle filter functionality. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio: vz89x: Remove unnecessary castLars-Peter Clausen1-1/+1
The case to u8 * is unnecessary here since the expression is already of type u8 *. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio: in2xx-adc: Remove unnecessary castLars-Peter Clausen1-1/+1
`buf` is cast to a const char *, but `buf` is already a const char *, so the case is unnecessary. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio: as3935: Remove unnecessary castLars-Peter Clausen1-1/+1
`buf` is cast to a const char *, but `buf` is already a const char *, so the case is unnecessary. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio: stmpe-adc: Use correctly sized arguments for bit fieldKees Cook1-2/+3
The find.h APIs are designed to be used only on unsigned long arguments. This can technically result in a over-read, but it is harmless in this case. Regardless, fix it to avoid the warning seen under -Warray-bounds, which we'd like to enable globally: In file included from ./include/linux/bitmap.h:9, from ./include/linux/cpumask.h:12, from ./arch/x86/include/asm/cpumask.h:5, from ./arch/x86/include/asm/msr.h:11, from ./arch/x86/include/asm/processor.h:22, from ./arch/x86/include/asm/cpufeature.h:5, from ./arch/x86/include/asm/thread_info.h:53, from ./include/linux/thread_info.h:60, from ./arch/x86/include/asm/preempt.h:7, from ./include/linux/preempt.h:78, from ./include/linux/spinlock.h:55, from ./include/linux/swait.h:7, from ./include/linux/completion.h:12, from drivers/iio/adc/stmpe-adc.c:10: drivers/iio/adc/stmpe-adc.c: In function 'stmpe_adc_probe': ./include/linux/find.h:98:23: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'u32[1]' {aka 'unsigned int[1]'} [-Warray-bounds] 98 | val = *addr | ~GENMASK(size - 1, offset); | ^~~~~ drivers/iio/adc/stmpe-adc.c:258:13: note: while referencing 'norequest_mask' 258 | u32 norequest_mask = 0; | ^~~~~~~~~~~~~~ Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio:adc:ti-ads8688:: remove redundant ret variableMinghao Chi1-3/+1
Return value from ads8688_prog_write() directly instead of taking this in another redundant variable. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio: addac: ad74413r: fix off by one in ad74413r_parse_channel_config()Dan Carpenter1-1/+1
The > needs to be >= to prevent accessing one element beyond the end of the st->channel_configs[] array. Fixes: fea251b6a5db ("iio: addac: add AD74413R driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Cosmin Tanislav <cosmin.tanislav@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio: adc: ad7606: Fix syntax errors in commentsXiang wangx1-1/+1
Delete the redundant word 'the'. Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-16iio: iio_device_alloc(): Remove unnecessary self drvdataLars-Peter Clausen1-1/+0
Drvdata is typically used by drivers to attach driver specific data to a device. It is used to retrieve driver specific information when only the device to which the data is attached is available. In the IIO core in the `iio_device_alloc()` function we call `iio_device_set_drvdata(indio_dev, indio_dev)`. This sets the drvdata of the IIO device to itself. This is rather unnecessary since if we have a pointer to the IIO device to call `iio_device_get_drvdata()` on it we don't need to call the function since we already have the pointer. If we only have a pointer to the `struct device` we can use `dev_to_iio_dev()` to get the IIO device from it. Furthermore the drvdata is supposed to be reserved for drivers, so it should not be used by the IIO core in the first place. The `set_drvdata()` has been around from the very beginning of the IIO framework and back then it was used in the IIO device sysfs attribute handling code. But that was subsequently replaced with a `dev_to_iio_dev()` in commit e53f5ac52ec1 ("iio: Use dev_to_iio_dev()") and other cleanups. The self `set_drvdata()` is now no longer needed and can be removed. Verified that there no longer any users by checking for potential users using the following two coccinelle scripts and reviewing that none of the matches are problematic code. <smpl> @@ struct iio_dev *iio_dev; expression dev; identifier fn !~ "(remove|resume|suspend)"; @@ fn(...) { ... *iio_dev = dev_get_drvdata(dev) ... } </smpl> <smpl> @r1@ position p; struct iio_dev *indio_dev; identifier dev_fn =~ "^dev_"; identifier devm_fn =~ "^devm_"; @@ ( dev_fn | devm_fn ) (&indio_dev@p->dev, ...) @@ struct iio_dev *indio_dev; position p != r1.p; @@ *&indio_dev@p->dev</smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-12iio:adc/dac:Kconfig: Update to drop OF dependencies.Jonathan Cameron2-3/+2
We could probably drop a lot more of these, but for now this removes unnecessary restrictions on stand alone ADC devices. For these 3 drivers the false dependency seems to date all the way back to their initial introduction. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2021-12-12iio:adc:ti-ads124s08: Drop dependency on OF.Jonathan Cameron2-3/+2
Nothing in this driver depends on OF firmware so drop the dependency and update the headers to remove the false impression such a dependency exists. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2021-12-12iio:adc:envelope-detector: Switch from of headers to mod_devicetable.hJonathan Cameron1-2/+1
There is nothing directly using of specific interfaces in this driver, so lets not include the headers. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Peter Rosin <peda@axentia.se> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2021-12-12iio:adc:ti-adc12138: Switch to generic firmware properties and drop of_match_ptrJonathan Cameron1-7/+4
This enables using the driver with other firmware types such as ACPI via PRP0001. Also part of a general attempt to move IIO drivers over to generic properties to avoid opportunities for cut and paste. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2021-12-12iio:adc:mcp3911: Switch to generic firmware properties.Jonathan Cameron1-3/+6
This allows use of the driver with other types of firmware such as ACPI PRP0001 based probing. Also part of a general attempt to remove direct use of of_ specific accessors from IIO. Added an include for mod_devicetable.h whilst here to cover the struct of_device_id definition. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Kent Gustavsson <kent@minoris.se> Reviewed-by: Marcus Folkesson <marcus.folkesson@gmail.com>
2021-12-12iio:adc:max9611: Switch to generic firmware properties.Jonathan Cameron1-11/+9
Note the handling of the device tree node in this driver was somewhat unusual. I have cleaned that up whilst also moving over to generic properties. Part of a general attempt to move all IIO drivers over to generic firmware properties both as a general improvement and to avoid sources of cut and paste into future drivers. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2021-12-12iio:light:cm3605: Switch to generic firmware properties.Jonathan Cameron1-3/+3
This enables use of other firmware types with minimal driver changes. Part of an ongoing effort to move all IIO drivers over to generic accessors in order to reduce the chance of of_* versions being copied into new drivers. Also updated the headers to reflect this change including using mod_devicetable.h for struct of_device_id definition rather than going via of.h Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2021-12-12iio:pot:mcp41010: Switch to generic firmware properties.Jonathan Cameron1-3/+3
In this case it was only of_device_get_match_data() + header update. This enables use of other firmware types with no other changes, such as ACPI via the PRP0001 route. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Chris Coffey <cmc@babblebit.net>
2021-12-12iio:dac:lpc18xx_dac: Swap from of* to mod_devicetable.hJonathan Cameron1-2/+1
This driver never used anything from the of specific headers. mod_devicetable.h provides the struct of_device_id definition. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2021-12-12iio:dac:dpot-dac: Swap of.h for mod_devicetable.hJonathan Cameron1-1/+1
This driver never used anything in the of specific header. It just wants the struct of_device_id from mod_devicetable.h. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Peter Rosin <peda@axentia.se>
2021-12-12iio:dac:ad5758: Drop unused of specific headers.Jonathan Cameron1-2/+1
These have never been used in this driver. What is used is in mod_devicetable.h so add that include (struct of_device_id) Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Daniel Gomez <dagmcr@gmail.com>
2021-12-12iio:dac:ad5755: Switch to generic firmware properties and drop pdataJonathan Cameron1-36/+116
Lars pointed out that platform data can also be supported via the generic properties interface, so there is no point in continuing to support it separately. Hence squish the linux/platform_data/ad5755.h header into the c file and drop accessing the platform data directly. Done by inspection only. Mostly completely mechanical with the exception of a few places where default value handling is cleaner done by first setting the value, then calling the firmware reading function but and not checking the return value, as opposed to reading firmware then setting the default if an error occurs. Part of general attempt to move all of IIO over to generic device properties, both to enable other firmware types and to remove drivers that can be the source of of_ specific behaviour in new drivers. Suggested-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2021-12-12iio: trigger: Fix a scheduling whilst atomic issue seen on tsc2046Jonathan Cameron1-1/+35
IIO triggers are software IRQ chips that split an incoming IRQ into separate IRQs routed to all devices using the trigger. When all consumers are done then a trigger callback reenable() is called. There are a few circumstances under which this can happen in atomic context. 1) A single user of the trigger that calls the iio_trigger_done() function from interrupt context. 2) A race between disconnecting the last device from a trigger and the trigger itself sucessfully being disabled. To avoid a resulting scheduling whilst atomic, close this second corner by using schedule_work() to ensure the reenable is not done in atomic context. Note that drivers must be careful to manage the interaction of set_state() and reenable() callbacks to ensure appropriate reference counting if they are relying on the same hardware controls. Deliberately taking this the slow path rather than via a fixes tree because the error has hard to hit and I would like it to soak for a while before hitting a release kernel. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Tested-by: Oleksij Rempel <o.rempel@pengutronix.de> Cc: <Stable@vger.kernel.org> Link: https://lore.kernel.org/r/20211017172209.112387-1-jic23@kernel.org
2021-12-12iio: addac: add AD74413R driverCosmin Tanislav3-0/+1488
The AD74412R and AD74413R are quad-channel, software configurable, input/output solutions for building and process control applications. They contain functionality for analog output, analog input, digital input, resistance temperature detector, and thermocouple measurements integrated into a single chip solution with an SPI interface. The devices feature a 16-bit ADC and four configurable 13-bit DACs to provide four configurable input/output channels and a suite of diagnostic functions. The AD74413R differentiates itself from the AD74412R by being HART-compatible. When configured with channel 0 as voltage output, channel 1 as current output, channel 2 as voltage input and channel 3 as current input, the following structure is created under the corresponding IIO device. . ├── in_current0_offset ├── in_current0_raw ├── in_current0_sampling_frequency ├── in_current0_sampling_frequency_available ├── in_current0_scale ├── in_voltage1_offset ├── in_voltage1_raw ├── in_voltage1_sampling_frequency ├── in_voltage1_sampling_frequency_available ├── in_voltage1_scale ├── in_voltage2_offset ├── in_voltage2_raw ├── in_voltage2_sampling_frequency ├── in_voltage2_sampling_frequency_available ├── in_voltage2_scale ├── in_current3_offset ├── in_current3_raw ├── in_current3_sampling_frequency ├── in_current3_sampling_frequency_available ├── in_current3_scale ├── out_voltage0_raw ├── out_voltage0_scale ├── out_current1_raw ├── out_current1_scale ├── name ├── buffer │   ├── data_available │   ├── enable │   ├── length │   └── watermark └── scan_elements    ├── in_current0_en    ├── in_current0_index    ├── in_current0_type    ├── in_voltage1_en    ├── in_voltage1_index    ├── in_voltage1_type    ├── in_voltage2_en    ├── in_voltage2_index    ├── in_voltage2_type    ├── in_current3_en    ├── in_current3_index    └── in_current3_type Signed-off-by: Cosmin Tanislav <cosmin.tanislav@analog.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20211205114045.173612-4-cosmin.tanislav@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-12iio: add addac subdirectoryCosmin Tanislav4-0/+16
For IIO devices that expose both ADC and DAC functionality. Signed-off-by: Cosmin Tanislav <cosmin.tanislav@analog.com> Link: https://lore.kernel.org/r/20211205114045.173612-2-cosmin.tanislav@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-12-04iio:dac:ad7293: add support for AD7293Antoniu Miclaus3-0/+946
The AD7293 is a Power Amplifier drain current controller containing functionality for general-purpose monitoring and control of current, voltage, and temperature, integrated into a single chip solution with an SPI-compatible interface. Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/AD7293.pdf Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Reviewed-by: Cai Huoqing <cai.huoqing@linux.dev> Link: https://lore.kernel.org/r/20211202150819.24832-1-antoniu.miclaus@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-28 04:29:15 +0300