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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
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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>
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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
...
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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>
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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>
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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
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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
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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
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`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>
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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>
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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>
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Delete the redundant word 'the'.
Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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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>
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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>
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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>
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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>
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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>
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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>
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Most AXPxxx-based reference designs place a 10k NTC thermistor on a
TS pin. When appropriately configured, AXP PMICs will inject fixed
current (80uA by default) into TS pin and measure the voltage across a
thermistor. The PMIC itself will by default compare this voltage with
predefined thresholds and disable battery charging whenever
the battery is too hot or too cold.
Alternatively, the TS pin can be configured as general-purpose
ADC input. This mode is not supported by the driver.
This patch allows reading the voltage on the TS pin. It can be then
either processed by userspace or used by kernel consumer like hwmon
ntc thermistor driver.
Signed-off-by: Evgeny Boger <boger@wirenboard.com>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Quentin Schulz <foss+kernel@0leil.net>
Link: https://lore.kernel.org/r/20211118141233.247907-2-boger@wirenboard.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The shared parameter should be configurable based on its usage, and not
constrained to IIO_SHARED_BY_TYPE.
This patch aims to improve the flexibility in using the
IIO_ENUM_AVAILABLE define and avoid redefining custom iio enums that
expose the shared parameter.
An example is the ad5766.c driver where IIO_ENUM_AVAILABLE_SHARED was
defined in order to achieve `shared` parameter customization.
The current state of the IIO_ENUM_AVAILABLE implementation will imply
similar redefinitions each time a driver will require access to the
`shared` parameter. An example would be admv1013 driver which will
require custom device attribute for the frequency translation modes:
Quadrature I/Q mode and Intermediate Frequency mode.
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20211119085627.6348-1-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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dev_err_probe() calls __device_set_deferred_probe_reason()
on -EPROBE_DEFER error. If device pointer to driver core
private structure is not initialized, an null pointer error occurs.
This pointer is set on iio_device_register() call for iio device.
dev_err_probe() must be called with the device which is probing.
Replace iio device by its parent device.
Fixes: 0e346b2cfa85 ("iio: adc: stm32-adc: add vrefint calibration support")
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.kernel.org/r/20211122143809.2332-1-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Use scan_type when processing raw data which also fixes that the sign
extension was from the wrong bit.
Use channel definition as root of trust and replace constant
when reading elements directly using the raw sysfs attributes.
Fixes: 6794e23fa3fe ("iio: adc: at91-sama5d2_adc: add support for oversampling resolution")
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Eugen Hristev <eugen.hristev@microchip.com>
Cc: <Stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211104082413.3681212-9-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Both the charging and discharging currents on AXP22x are stored as
12-bit integers, in accordance with the datasheet.
It's also confirmed by vendor BSP (axp20x_adc.c:axp22_icharge_to_mA).
The scale factor of 0.5 is never mentioned in datasheet, nor in the
vendor source code. I think it was here to compensate for
erroneous addition bit in register width.
Tested on custom A40i+AXP221s board with external ammeter as
a reference.
Fixes: 0e34d5de961d ("iio: adc: add support for X-Powers AXP20X and AXP22X PMICs ADCs")
Signed-off-by: Evgeny Boger <boger@wirenboard.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20211116213746.264378-1-boger@wirenboard.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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IIO trigger handlers must call iio_trigger_notify_done() when done. This
must be done even when an error occurred. Otherwise the trigger will be
seen as busy indefinitely and the trigger handler will never be called
again.
The ad7768-1 driver neglects to call iio_trigger_notify_done() when there
is an error reading the converter data. Fix this by making sure that
iio_trigger_notify_done() is included in the error exit path.
Fixes: a5f8c7da3dbe ("iio: adc: Add AD7768-1 ADC basic support")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211101144055.13858-2-lars@metafoo.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Commit 1e23dcaa1a9f ("iio: imx8qxp-adc: Add driver support for NXP IMX8QXP
ADC") adds the config IMX8QXP_ADC for this new driver, which depends on
the non-existing config ARCH_MXC_ARM64.
Hence, ./scripts/checkkconfigsymbols.py warns:
ARCH_MXC_ARM64
Referencing files: drivers/iio/adc/Kconfig
Probably, the existing config ARCH_MXC is intended to be referred here.
So, repair the dependency to refer to that config.
Fixes: 1e23dcaa1a9f ("iio: imx8qxp-adc: Add driver support for NXP IMX8QXP ADC")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20211111083954.6286-1-lukas.bulwahn@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Registering a trigger can fail and the return value of
devm_iio_trigger_register() must be checked. Otherwise undefined behavior
can occur when the trigger is used.
Fixes: 7c0299e879dd ("iio: adc: Add support for DLN2 ADC")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211101133043.6974-1-lars@metafoo.de
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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When reading the voltage:
$ cat /sys/bus/iio/devices/iio\:device0/in_voltage0_raw
Lockdep complains:
[ 153.910616] ======================================================
[ 153.916918] WARNING: possible circular locking dependency detected
[ 153.923221] 5.14.0+ #5 Not tainted
[ 153.926692] ------------------------------------------------------
[ 153.932992] cat/717 is trying to acquire lock:
[ 153.937525] c2585358 (&indio_dev->mlock){+.+.}-{3:3}, at: iio_device_claim_direct_mode+0x28/0x44
[ 153.946541]
but task is already holding lock:
[ 153.952487] c2585860 (&dln2->mutex){+.+.}-{3:3}, at: dln2_adc_read_raw+0x94/0x2bc [dln2_adc]
[ 153.961152]
which lock already depends on the new lock.
Fix this by not calling into the iio core underneath the dln2->mutex lock.
Fixes: 7c0299e879dd ("iio: adc: Add support for DLN2 ADC")
Cc: Jack Andersen <jackoalan@gmail.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://lore.kernel.org/r/20211018113731.25723-1-noralf@tronnes.org
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Some I/Os are connected to ADC input channels, when the corresponding bit
in PCSEL register are set on STM32H7 and STM32MP15. This is done in the
prepare routine of stm32-adc driver.
There are constraints here, as PCSEL shouldn't be set when VDDA supply
is disabled. Enabling/disabling of VDDA supply in done via stm32-adc-core
runtime PM routines (before/after ADC is enabled/disabled).
Currently, PCSEL remains set when disabling ADC. Later on, PM runtime
can disable the VDDA supply. This creates some conditions on I/Os that
can start to leak current.
So PCSEL needs to be cleared when disabling the ADC.
Fixes: 95e339b6e85d ("iio: adc: stm32: add support for STM32H7")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Olivier Moysan <olivier.moysan@foss.st.com>
Link: https://lore.kernel.org/r/1634905169-23762-1-git-send-email-fabrice.gasnier@foss.st.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The print function dev_err() is redundant because
platform_get_irq() already prints an error.
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211105015504.39226-1-vulab@iscas.ac.cn
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Minor cleanup: bit is already defined as chan->scan_type.realbits,
use bit when needed.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Link: https://lore.kernel.org/r/20211104082413.3681212-13-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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By using scan_type.realbits when processing raw data,
we use scan_type.shit only once, thus we don't need to define a local
variable for it anymore.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Link: https://lore.kernel.org/r/20211104082413.3681212-12-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Use channel definition as root of trust and replace constant
when reading elements directly using the raw sysfs attributes.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Link: https://lore.kernel.org/r/20211104082413.3681212-10-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Use channel definition as root of trust and replace constant
when reading elements directly using the raw sysfs attributes.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Link: https://lore.kernel.org/r/20211104082413.3681212-8-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Using `dev_get_drvdata()` in IIO sysfs callbacks to get a pointer to the
IIO device is a relic from the very early days of IIO. The IIO core as well
as most other drivers have switched over to using `dev_to_iio_dev()`
instead.
This driver is one of the last few drivers remaining that uses the outdated
idiom, update it. This will allow to eventually update the IIO core to no
longer set the drvdata for the IIO device and free it up for driver usage.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211019082929.30503-2-lars@metafoo.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The at91-sama5d2 driver calls `to_platform_device()` on a struct device
that is part of a IIO device. This is incorrect since
`to_platform_device()` must only be called on a struct device that is part
of a platform device.
The code still works by accident because non of the struct platform_device
specific fields are accessed.
Refactor the code a bit so that it behaves identically, but does not use
the incorrect cast. This avoids accidentally adding undefined behavior in
the future by assuming the `struct platform_device` is actually valid.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Eugen Hristev <eugen.hristev@microchip.com>
Link: https://lore.kernel.org/r/20211019082929.30503-1-lars@metafoo.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The IIO core handles a trigger ops with all NULL callbacks the
same as if the trigger ops itself was NULL.
Remove the empty trigger ops from the interrupt trigger driver to slightly
reduce the boilerplate code. Object size of the driver module is also
slightly reduced.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211031142130.20791-3-lars@metafoo.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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get_task_struct/put_task_struct()
kthread_run() and kthread_stop() already do reference
counting of the task, so remove get_task_struct/put_task_struct()
to avoid double reference counting.
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Link: https://lore.kernel.org/r/20211021124254.3247-2-caihuoqing@baidu.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Repalce kthread_create/wake_up_process() with kthread_run()
to simplify the code.
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Link: https://lore.kernel.org/r/20211021124254.3247-1-caihuoqing@baidu.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The `imx7d_adc_enable()` and `imx7d_adc_disable()` functions are used as
the suspend and resume callbacks for the device. When called as
suspend/resume functions they are called with the platform_device's device
as their parameter.
In addition the functions are called on device probe and remove. In this
case they are passed the struct device of the IIO device that the driver
registers.
This works because in the `imx7d_adc_{enable,disable}()` functions the
passed struct device is only ever used as a parameter to `dev_get_drvdata()`
and `dev_get_drvdata()` returns the same value for the platform device and
the IIO device.
But for consistency we should pass the same struct device to the
`imx7d_adc_{enable,disable}()` in all cases. This will avoid accidental
breakage if the device is ever used for something more than
`dev_get_drvdata()`.
Another motivation is that `dev_get_drvdata()` on the IIO device relies on
the IIO core calling `dev_set_drvdata()`. Something we want to remove.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211020085754.16654-1-lars@metafoo.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Fix following coccicheck warning:
./drivers/iio/adc/stm32-adc.c:2014:1-33: WARNING: Function
for_each_available_child_of_node should have of_node_put() before return.
Early exits from for_each_available_child_of_node should decrement the
node reference counter. Replace return by goto here.
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Link: https://lore.kernel.org/r/20211021121826.6339-1-wanjiabing@vivo.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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In some setups the IRQ signal of the XADC might not be wired to the host
system. The driver currently requires that an interrupt is specified. Make
the interrupt optional so the driver can be used in such setups where the
interrupt is not connected.
Since both the internal triggers as well as events depend on the interrupt
being connected both are not available when the interrupt is not connected.
Buffered access is still supported even without an interrupt since an
external trigger can be used.
The IRQ is only optional when using the AXI interface, since the PCAP
interface needs the IRQ for reading and writing registers.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211021125950.28707-1-lars@metafoo.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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clk_get_rate() is not guaranteed to work if called before
clk_prepare_enable().
Reorder clk_get_rate(), so it's called after clk_prepare_enable() and
after devm_add_action_or_reset() of lpc18xx_clk_disable().
Not that this is not a problem on this particular device, but it is
good to remove a case that might get copied elsewhere.
Suggested-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: André Gustavo Nakagomi Lopez <andregnl@usp.br>
Link: https://lore.kernel.org/r/YXag5l4xBkGQH3tq@Andryuu.br
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"Removed Drivers:
- Remove support for TI TPS80031/TPS80032 PMICs
New Device Support:
- Add support for Magnetic Reader to TI AM335x
- Add support for DA9063_EA to Dialog DA9063
- Add support for SC2730 PMIC to Spreadtrum SC27xx
- Add support for MacBookPro16,2 ICL-N UART Intel LPSS PCI
- Add support for lots of new PMICS in QCom SPMI PMIC
- Add support for ADC to Diolan DLN2
New Functionality:
- Add support for Power Off to Rockchip RK817
Fix-ups:
- Simplify Regmap passing to child devices in hi6421-spmi-pmic
- SPDX licensing updates in ti_am335x_tscadc
- Improve error handling in ti_am335x_tscadc
- Expedite clock search in ti_am335x_tscadc
- Generic simplifications in ti_am335x_tscadc
- Use generic macros/defines in ti_am335x_tscadc
- Remove unused code in ti_am335x_tscadc, cros_ec_dev
- Convert to GPIOD in wcd934x
- Add namespacing in ti_am335x_tscadc
- Restrict compilation to relevant arches in intel_pmt
- Provide better description/documentation in exynos_lpass
- Add SPI device ID table in altera-a10sr, motorola-cpcap,
sprd-sc27xx-spi
- Change IRQ handling in qcom-pm8xxx
- Split out I2C and SPI code in arizona
- Explicitly include used headers in altera-a10sr
- Convert sysfs show() function to in sysfs_emit
- Standardise *_exit() and *_remove() return values in mc13xxx,
stmpe, tps65912
- Trivial (style/spelling/whitespace) fixups in ti_am335x_tscadc,
qcom-spmi-pmic, max77686-private
- Device Tree fix-ups in ti,am3359-tscadc, samsung,s2mps11,
samsung,s2mpa01, samsung,s5m8767, brcm,misc, brcm,cru, syscon,
qcom,tcsr, xylon,logicvc, max77686, x-powers,ac100,
x-powers,axp152, x-powers,axp209-gpio, syscon, qcom,spmi-pmic
Bug Fixes:
- Balance refcounting (get/put) in ti_am335x_tscadc, mfd-core
- Fix IRQ trigger type in sec-irq, max77693, max14577
- Repair off-by-one in altera-sysmgr
- Add explicit 'select MFD_CORE' to MFD_SIMPLE_MFD_I2C"
* tag 'mfd-next-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (95 commits)
mfd: simple-mfd-i2c: Select MFD_CORE to fix build error
mfd: tps80031: Remove driver
mfd: max77686: Correct tab-based alignment of register addresses
mfd: wcd934x: Replace legacy gpio interface for gpiod
dt-bindings: mfd: qcom: pm8xxx: Add pm8018 compatible
mfd: dln2: Add cell for initializing DLN2 ADC
mfd: qcom-spmi-pmic: Add missing PMICs supported by socinfo
mfd: qcom-spmi-pmic: Document ten more PMICs in the binding
mfd: qcom-spmi-pmic: Sort compatibles in the driver
mfd: qcom-spmi-pmic: Sort the compatibles in the binding
mfd: janz-cmoio: Replace snprintf in show functions with sysfs_emit
mfd: altera-a10sr: Include linux/module.h
mfd: tps65912: Make tps65912_device_exit() return void
mfd: stmpe: Make stmpe_remove() return void
mfd: mc13xxx: Make mc13xxx_common_exit() return void
dt-bindings: mfd: syscon: Add samsung,exynosautov9-sysreg compatible
mfd: altera-sysmgr: Fix a mistake caused by resource_size conversion
dt-bindings: gpio: Convert X-Powers AXP209 GPIO binding to a schema
dt-bindings: mfd: syscon: Add rk3368 QoS register compatible
mfd: arizona: Split of_match table into I2C and SPI versions
...
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https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next
Jonathan writes:
2nd set of IIO new driver, cleanups and features for the 5.16 cycle
New device support
* adrf6780 microwave upconverter.
- New driver for this interesting device including bindings.
Features
* lite-on ltr501
- Add dt-bindings including vendor ID and of_device_id table.
- Add regulator support.
* sensiron,scd4x
- Add reporting of channel scale.
Cleanups including fixes for things in this cycle
* Tree wide: Another set of dev_err_probe() introductions to reduce
noise in logs when deferred probing is needed and provide more debug
info. Devices included this time:
- amlogic,meson_saradc
- capella,cm3605
- fsl,imx7d
- maxim,max1118
- maxim,max1241
- nxp,lpc18xx
- qcom,pm8xxxx-xoadc
- rockchip,saradc
- sharp,gp2ap002
- sterricson,ab8500
- ti,ads7950
* core - iio:buffer
- Fix a path where a ret value is not intialized.
* channel-mux
- Add support to mux core subsystem for a settling delay and use
it in the iio-channel-mux driver.
- Fix a few dt binding warnings.
* nxp,lpc18xx
- Convert to devm_ functions for all of probe and drop remove()
* st,lsm6dsx
- Suppress a warning due to lack of handling of an enum *_MAX entry
that is just there to get the size.
* st,stm32-adc
- Add generic channel binding, deprecating the old approach.
- Add nvmem support to get calibration data for the vrefint channel and
use it to perform such calibration.
- Add a binding for sample-time to the generic channel description as it
can be per channel.
* ti,adc128s052
- Use devm_ managed functions and drop remove()
* vti,sca3000
- Use sign_extend32() rather than opencoding.
* xilinx,xadc
- Drop irq field from state structure as now just used in probe.
* tag 'iio-for-5.16b' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (36 commits)
dt-bindings: iio: frequency: add adrf6780 doc
iio: frequency: adrf6780: add support for ADRF6780
iio: chemical: scd4x: Add a scale for the co2 concentration reading
dt-bindings: iio: io-channel-mux: allow duplicate channel, labels
dt-bindings: iio: io-channel-mux: add optional #io-channel-cells
iio: adc: adc128s052: Simplify adc128_probe()
iio: multiplexer: iio-mux: Support settle-time-us property
dt-bindings: iio: io-channel-mux: Add property for settle time
mux: add support for delay after muxing
iio: adc: stm32-adc: use generic binding for sample-time
iio: adc: stm32-adc: add vrefint calibration support
iio: adc: stm32-adc: add support of internal channels
iio: adc: stm32-adc: add support of generic channels binding
iio: adc: stm32-adc: split channel init into several routines
dt-bindings: iio: stm32-adc: add nvmem support for vrefint internal channel
dt-bindings: iio: stm32-adc: add generic channel binding
iio: accel: sca3000: Use sign_extend32() instead of opencoding sign extension.
iio: xilinx-xadc: Remove `irq` field from state struct
iio: imu: st_lsm6dsx: Avoid potential array overflow in st_lsm6dsx_set_odr()
iio: light: gp2ap002: Make use of the helper function dev_err_probe()
...
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https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next
Jonathan writes:
First set of IIO fixes for the 5.16 cycle
As these are very late in the 5.15 cycle and non are particularly urgent,
they can wait for the merge window.
Key element in this set is Yang Yingliang has identified a number of
issues in error paths introduced recently when we added multiple
buffer support.
Other fixes:
* adi,ad5662
- Fix handling of i2c_master_send() return value.
* adi,ad5766
- Fix a wrong dt-property name that indicated wrong units and
did not mach the bindings.
- Associated 'fix' of the bindings example to have a possible scale.
* st,pressure-spi
- Add some missing entries to the spi_device_id table to ensure
auto-loading works.
* ti,tsc2046
- Fix a backwards comparison leading to a false dev_warn
* tag 'iio-fixes-for-5.16a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
iio: buffer: Fix memory leak in iio_buffers_alloc_sysfs_and_mask()
iio: adc: tsc2046: fix scan interval warning
iio: core: fix double free in iio_device_unregister_sysfs()
iio: core: check return value when calling dev_set_name()
iio: buffer: Fix memory leak in iio_buffer_register_legacy_sysfs_groups()
iio: buffer: Fix double-free in iio_buffers_alloc_sysfs_and_mask()
iio: buffer: Fix memory leak in __iio_buffer_alloc_sysfs_and_mask()
iio: buffer: check return value of kstrdup_const()
iio: dac: ad5446: Fix ad5622_write() return value
Documentation:devicetree:bindings:iio:dac: Fix val
drivers: iio: dac: ad5766: Fix dt property name
iio: st_pressure_spi: Add missing entries SPI to device ID table
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Turn 'adc128_probe()' into a full resource managed function to simplify the
code.
This way, the .remove function can be removed.
Doing so, the only 'spi_get_drvdata()' call is removed and the
corresponding 'spi_set_drvdata()' can be removed as well.
Suggested-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/4fa7fcc59c40e27af0569138d656c698a53dbd44.1630002770.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This driver supports both the legacy controller (am33xx) and the
extended one (am437x), so let's add a new compatible.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211015081506.933180-46-miquel.raynal@bootlin.com
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Without the scale, the values returned to the user are just a picture of
the input voltage against the full scale range of the ADC. We need to
provide the actual conversion factor to get milli-Volts values.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211015081506.933180-45-miquel.raynal@bootlin.com
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The lack of unit in the macro name kind of tricked me when I was
troubleshooting an issue. Physical constants should always get a unit.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211015081506.933180-44-miquel.raynal@bootlin.com
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Move the checks over the delays provided in the device tree to the
location where these values are read to clarify where they come from.
There are no functional changes besides the device structure used to
display the warnings: let's use the ADC instead of the MFD device.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211015081506.933180-43-miquel.raynal@bootlin.com
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