The dht11 driver uses a single gpio to make measurements. It was
using the older global gpio numberspace. The patch replaces the
old gpio api with the new gpio descriptor based api.
Removed header files "linux/gpio.h" and "linux/of_gpio.h"
Signed-off-by: Shobhit Kukreti <shobhitkukreti@gmail.com>
Acked-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
There is nothing being done after the `err_predisable` label, so just
remove it.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The ADL5240 is a high performance, digitally controlled variable gain
amplifier (VGA) operating from 100 MHz to 4000 MHz. The VGA integrates a
high performance, 20 dB gain, internally matched amplifier (AMP) with a
6-bit digital step attenuator (DSA) that has a gain control range of
31.5 dB in 0.5 dB steps with ±0.25 dB step accuracy.
Datasheet link:
https://www.analog.com/media/en/technical-documentation/data-sheets/adl5240.pdf
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This change adds support for the ADA4961 BiCMOS RF Digital Gain Amplifier,
(DGA), which is optimized for driving heavy loads out 2.0 GHz and beyond.
The device typically achieves -90 dBc IMD3 performance at 500 MHz and
-85 dBc at 1.5 GHz.
Datasheet link:
http://www.analog.com/media/en/technical-documentation/data-sheets/ADA4961.pdf
This change re-uses the existing ad8366 driver, as most logic is similar.
Also, this chip has a reset pin which is initialized during probe.
Signed-off-by: Paul Cercueil <paul.cercueil@analog.com>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The SPI gain amplifiers are simple devices, with 1 or 2 channels, to which
are read-from/written-to.
The gain computation in ad8366_write_raw() has been updated to compute gain
in dB for negative values.
This driver will be extended to support other chips as well.
To do that, this rework handles the AD8366 device as a special-case (via
switch-statements). This will make things easier when adding new chips.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This driver is still using iio_dev's mlock to guard against inconsistent
state. This has been discouraged for some time.
This change switches to using it's own mutex, defined on the state struct.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Use the new `SPDX-License-Identifier` tag to specify the license.
For ad8366, also update copyright years in the header part.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The iio_triggered_buffer_{predisable,postenable} functions attach/detach
the poll functions.
For the predisable hook, the disable code should occur before detaching
the poll func, and for the postenable hook, the poll func should be
attached before the enable code.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The ADF4371 is a frequency synthesizer with an integrated voltage
controlled oscillator (VCO) for phase-locked loops (PLLs). The ADF4371
has an integrated VCO with a fundamental output frequency ranging from
4000 MHz to 8000 MHz. In addition, the VCO frequency is connected to
divide by 1, 2, 4, 8, 16, 32, or 64 circuits that allows the user to
generate radio frequency (RF) output frequencies as low as 62.5 MHz at
RF8x. A frequency multiplier at RF16x generates from 8 GHz to 16 GHz. A
frequency quadrupler generates frequencies from 16 GHz to 32 GHz at RF32x.
RFAUX8x duplicates the frequency range of RF8x or permits direct access to
the VCO output.
The driver takes the reference input frequency from the device tree and
uses it to calculate and maximize the PFD frequency (frequency of the phase
frequency detector). The PFD frequency is further used to calculate the
timeouts: synthesizer lock, VCO band selection, automatic level
calibration (ALC) and PLL settling time.
This initial driver exposes the attributes for setting the frequency and
enabling/disabling the different adf4371 channels.
Datasheet:
Link: https://www.analog.com/media/en/technical-documentation/data-sheets/adf4371.pdf
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Introduce sensor name in st_lsm6dsx_sensor_settings table. This is
a preliminary patch to add I3C support to st_lsm6dsx since i3c_device_id
data structure does not contain a name field
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
average_en is always true, so there is not really need for
this structure member.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
All the parameters of devm_request_irq() can fit into a
single line, so place them all in a single line
for better readability.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Since the input clock is always 24MHz, there is no need for storing
this value into a variable.
Use a definition instead, which is more appropriate in this case.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
In case of ioremap failure, the core code will take care of printing
the error message, so there is no need for having a local error
message in the driver.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The stk3335 light/proximity sensor is similar to the stk3310 and stk3311
sensors and works with the stk3310 driver.
Signed-off-by: Martijn Braam <martijn@brixit.nl>
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The incorrect limit for the for_each_set_bit loop was noticed whilst fixing
this other case. Note that as we only have 3 possible entries a the moment
and the value was set to 4, the bug would not have any effect currently.
It will bite fairly soon though, so best fix it now.
See commit ef4b485659 ("iio:core: Fix bug in length of event info_mask and
catch unhandled bits set in masks.") for details.
Signed-off-by: Young Xiao <92siuyang@gmail.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
We have a dedicated pointer for that, so use it. Much easier to read and
less computation involved.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Because this driver will support multiple configurations for software,
the software configuration was made generic.
Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The device dependent options which are going to be different for devices
which will be supported in the future by this driver,
were moved in chip info for a more generic driver. This patch allows
supporting more devices by the driver. Also, it is an intermediate
step of adding support for ad7616 in software mode.
Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Some ultrabooks, like Teclast F6 Pro, use KIOX010A sensor on display
and KIOX020A sensor on keyboard base, to detect tablet mode or screen
orientation.
Signed-off-by: Luís Ferreira <luis@aurorafoss.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The DPS310 supports measurement of pressure, so support that in the
driver. Use background measurement like the temperature sensing and
default to lowest precision and lowest measurement rate.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add a manufacturer's suggested workaround to deal with early revisions
of chip that don't indicate correct temperature. Readings can be in the
~60C range when they should be in the ~20's.
Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The DPS310 is a temperature and pressure sensor. It can be accessed over
i2c and SPI, but this driver only supports polling over i2c.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
New device support
* mt6577
- add supprot for the mt6765 which requires a few minor additional
new features in the driver.
Yaml binding conversions
* adxl345
* isl29018
* tsl2583
* tsl2772
Minor features and improvements
* ad5758
- declare an of_device_id table rather than just relying on the spi
fallback which doesn't use the manufacturer id.
- drop a set but not used variable left from previous refactor.
* ad7816
- Add a bit more description to kconfig text.
* ad9523
- change calculation order to improve frequency accuracy.
* adxl372
- declare an of_device_id table
* adt7316
- white space.
* at91_adc
- Use dev_get_drvdata directly rather than boucing to the platform device
and back again.
* cros_ec
- add an id sysfs entry to bring in line with the other implementations.
* ds5522
- drop a check on the of_node existing as we don't actually use it for
anything.
* kxsd9
- declare an of_device_id table.
* maxim_thermocouple
- declare an of_device_id table.
* mt6577
- add dt binding entry for mt8183 which is also supported.
* rcar-gyroadc
- tidy up unnecessary error messages.
* stm32-dfsdm
- improved error handling.
* stmpe-adc
- drop an unnecessary variable assignment.
- add an of_device_id table.
- reinit completion on begin converstion to avoid a path in which
previous round had been interrupted, also switch to non interruptible
wait to avoid an issue with a user program using -pg
- simplify interrupt handling by just having them always enabled.
- reset all interrupts on startup and in the timeout handler to
avoid getting stuck.
* sun4i-gpadc
- SPDX
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Merge tag 'iio-for-5.3a' of 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 5.3 cycle
New device support
* mt6577
- add supprot for the mt6765 which requires a few minor additional
new features in the driver.
Yaml binding conversions
* adxl345
* isl29018
* tsl2583
* tsl2772
Minor features and improvements
* ad5758
- declare an of_device_id table rather than just relying on the spi
fallback which doesn't use the manufacturer id.
- drop a set but not used variable left from previous refactor.
* ad7816
- Add a bit more description to kconfig text.
* ad9523
- change calculation order to improve frequency accuracy.
* adxl372
- declare an of_device_id table
* adt7316
- white space.
* at91_adc
- Use dev_get_drvdata directly rather than boucing to the platform device
and back again.
* cros_ec
- add an id sysfs entry to bring in line with the other implementations.
* ds5522
- drop a check on the of_node existing as we don't actually use it for
anything.
* kxsd9
- declare an of_device_id table.
* maxim_thermocouple
- declare an of_device_id table.
* mt6577
- add dt binding entry for mt8183 which is also supported.
* rcar-gyroadc
- tidy up unnecessary error messages.
* stm32-dfsdm
- improved error handling.
* stmpe-adc
- drop an unnecessary variable assignment.
- add an of_device_id table.
- reinit completion on begin converstion to avoid a path in which
previous round had been interrupted, also switch to non interruptible
wait to avoid an issue with a user program using -pg
- simplify interrupt handling by just having them always enabled.
- reset all interrupts on startup and in the timeout handler to
avoid getting stuck.
* sun4i-gpadc
- SPDX
* tag 'iio-for-5.3a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (28 commits)
iio: adc: mediatek: mt6577-auxadc, add mt6765 support
dt-bindings: iio: adc: mediatek: Add document for mt6765
dt-bindings: iio: accel: adxl345: switch to YAML bindings
iio: adc: sun4i-gpadc-iio convert to SPDX license tags
iio: ad9523-1: Improve reported VCO frequency accuracy
iio: dac: ds4422/ds4424 drop of_node check
iio: stmpe-adc: Reset possible interrupts
iio: stmpe-adc: Use wait_for_completion_timeout
iio: stmpe-adc: Enable all stmpe-adc interrupts just once
iio: stmpe-adc: Reinit completion struct on begin conversion
iio: stmpe-adc: Add compatible name
iio: stmpe-adc: Remove unnecessary assignment
staging: iio: adc: Add paragraph to describe Kconfig symbol
staging: iio: adt7316: match parenthesis alignment
iio: adc: rcar-gyroadc: Remove devm_iio_device_alloc() error printing
dt-bindings: iio: isl29018: convert bindings to YAML format
dt-bindings: adc: mt8183: add binding document
iio: dac: ad5758: remove set but not used variable 'dc_dc_mode'
iio: cros_ec: add 'id' sysfs entry
iio: adc: stm32-dfsdm: missing error case during probe
...
1. Add calibrated sample data support
2. Use of_match_table to decide each platform's
feature set
Signed-off-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Updates license to use SPDX-License-Identifier.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To improve the accuracy of the reported VCO frequency perform all
multiplications before divisions. This reduces rounding errors and makes
sure the reported rates are accurate down to the last digit.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Core:
* Add over-current health state
* Add standard, adaptive and custom charge types
* Add new properties for start/end charge threshold
New Drivers / Hardware:
* UCS1002 Programmable USB Port Power Controller
* Ingenic JZ47xx Battery Fuel Gauge
* AXP20x USB Power: Add AXP813 support
* AT91 poweroff: Add SAM9X60 support
* OLPC battery: Add XO-1.5 and XO-1.75 support
Misc. Changes:
* syscon-reboot: support mask property
* AXP288 fuel gauge: Blacklist ACEPC T8/T11
- Looks like some vendor thought it's a good idea to
build a desktop system with a fuel gauge, that slowly
"discharges"...
* cpcap-battery: Fix calculation errors
* misc. fixes
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Merge tag 'for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
"Core:
- Add over-current health state
- Add standard, adaptive and custom charge types
- Add new properties for start/end charge threshold
New Drivers / Hardware:
- UCS1002 Programmable USB Port Power Controller
- Ingenic JZ47xx Battery Fuel Gauge
- AXP20x USB Power: Add AXP813 support
- AT91 poweroff: Add SAM9X60 support
- OLPC battery: Add XO-1.5 and XO-1.75 support
Misc Changes:
- syscon-reboot: support mask property
- AXP288 fuel gauge: Blacklist ACEPC T8/T11. Looks like some vendor
thought it's a good idea to build a desktop system with a fuel
gauge, that slowly "discharges"...
- cpcap-battery: Fix calculation errors
- misc fixes"
* tag 'for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (54 commits)
power: supply: olpc_battery: force the le/be casts
power: supply: ucs1002: Fix build error without CONFIG_REGULATOR
power: supply: ucs1002: Fix wrong return value checking
power: supply: Add driver for Microchip UCS1002
dt-bindings: power: supply: Add bindings for Microchip UCS1002
power: supply: core: Add POWER_SUPPLY_HEALTH_OVERCURRENT constant
power: supply: core: fix clang -Wunsequenced
power: supply: core: Add missing documentation for CHARGE_CONTROL_* properties
power: supply: core: Add CHARGE_CONTROL_{START_THRESHOLD,END_THRESHOLD} properties
power: supply: core: Add Standard, Adaptive, and Custom charge types
power: supply: axp288_fuel_gauge: Add ACEPC T8 and T11 mini PCs to the blacklist
power: supply: bq27xxx_battery: Notify also about status changes
power: supply: olpc_battery: Have the framework register sysfs files for us
power: supply: olpc_battery: Add OLPC XO 1.75 support
power: supply: olpc_battery: Avoid using platform_info
power: supply: olpc_battery: Use devm_power_supply_register()
power: supply: olpc_battery: Move priv data to a struct
power: supply: olpc_battery: Use DT to get battery version
x86/platform/olpc: Use a correct version when making up a battery node
x86/platform/olpc: Trivial code move in DT fixup
...
The driver doesn't actually rely on any DT properties. Removing this
check makes it usable on ACPI based platforms.
Signed-off-by: Ruslan Babayev <ruslan@babayev.com>
Cc: xe-linux-external@cisco.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Clear any interrupt that still is on the device on every channel
this driver is activated for in probe and specific channels in
the timeout handler.
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Use wait_for_completion_timeout instead of
wait_for_completion_interuptible_timeout.
The interruptible variant gets constantly interrupted if a user
program is compiled with the -pg option.
The killable variant was not used due to the fact that a second
program, reading on this device, that gets killed is then also killing
that wait.
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit will enable the interrupts of all channels handled by this
driver only once in the probe function.
This will improve performance because one byte less has to be written over
i2c on each read out of the adc. On the fastest ADC mode this will improve
read out speed by 15%.
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
In some cases, the wait_completion got interrupted. This caused the
error-handling to mutex_unlock the function. The before turned on
interrupt then got called anyway. In the ISR then completion() was
called causing wrong adc-values returned in a following adc-readout.
Reinitialise completion struct to make sure the counter is zero
when beginning a new adc-conversion.
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add the compatible name to the driver so it gets loaded when the proper
node in DT is detected.
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Here is the big staging and iio driver update for 5.2-rc1.
Lots of tiny fixes all over the staging and IIO driver trees here, along
with some new IIO drivers.
Also we ended up deleting two drivers, making this pull request remove a
few hundred thousand lines of code, always a nice thing to see. Both of
the drivers removed have been replaced with "real" drivers in their
various subsystem directories, and they will be coming to you from those
locations during this merge window.
There are some core vt/selection changes in here, that was due to some
cleanups needed for the speakup fixes. Those have all been acked by the
various subsystem maintainers (i.e. me), so those are ok.
We also added a few new drivers, for some odd hardware, giving new
developers plenty to work on with basic coding style cleanups to come in
the near future.
Other than that, nothing unusual here.
All of these have been in linux-next for a while with no reported
issues, other than an odd gcc warning for one of the new drivers that
should be fixed up soon.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging / IIO driver updates from Greg KH:
"Here is the big staging and iio driver update for 5.2-rc1.
Lots of tiny fixes all over the staging and IIO driver trees here,
along with some new IIO drivers.
The "counter" subsystem was added in here as well, as it is needed by
the IIO drivers and subsystem.
Also we ended up deleting two drivers, making this pull request remove
a few hundred thousand lines of code, always a nice thing to see. Both
of the drivers removed have been replaced with "real" drivers in their
various subsystem directories, and they will be coming to you from
those locations during this merge window.
There are some core vt/selection changes in here, that was due to some
cleanups needed for the speakup fixes. Those have all been acked by
the various subsystem maintainers (i.e. me), so those are ok.
We also added a few new drivers, for some odd hardware, giving new
developers plenty to work on with basic coding style cleanups to come
in the near future.
Other than that, nothing unusual here.
All of these have been in linux-next for a while with no reported
issues, other than an odd gcc warning for one of the new drivers that
should be fixed up soon"
[ I fixed up the warning myself - Linus ]
* tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (663 commits)
staging: kpc2000: kpc_spi: Fix build error for {read,write}q
Staging: rtl8192e: Remove extra space before break statement
Staging: rtl8192u: ieee80211: Fix if-else indentation warning
Staging: rtl8192u: ieee80211: Fix indentation errors by removing extra spaces
staging: most: cdev: fix chrdev_region leak in mod_exit
staging: wlan-ng: Fix improper SPDX comment style
staging: rtl8192u: ieee80211: Resolve ERROR reported by checkpatch
staging: vc04_services: bcm2835-camera: Compress two lines into one line
staging: rtl8723bs: core: Use !x in place of NULL comparison.
staging: rtl8723bs: core: Prefer using the BIT Macro.
staging: fieldbus: anybus-s: fix wait_for_completion_timeout return handling
staging: kpc2000: fix up build problems with readq()
staging: rtlwifi: move remaining phydm .h files
staging: rtlwifi: strip down phydm .h files
staging: rtlwifi: delete the staging driver
staging: fieldbus: anybus-s: rename bus id field to avoid confusion
staging: fieldbus: anybus-s: keep device bus id in bus endianness
Staging: sm750fb: Change *array into *const array
staging: rtl8192u: ieee80211: Fix spelling mistake
staging: rtl8192u: ieee80211: Replace bit shifting with BIT macro
...
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Merge tag 'pidfd-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull pidfd updates from Christian Brauner:
"This patchset makes it possible to retrieve pidfds at process creation
time by introducing the new flag CLONE_PIDFD to the clone() system
call. Linus originally suggested to implement this as a new flag to
clone() instead of making it a separate system call.
After a thorough review from Oleg CLONE_PIDFD returns pidfds in the
parent_tidptr argument. This means we can give back the associated pid
and the pidfd at the same time. Access to process metadata information
thus becomes rather trivial.
As has been agreed, CLONE_PIDFD creates file descriptors based on
anonymous inodes similar to the new mount api. They are made
unconditional by this patchset as they are now needed by core kernel
code (vfs, pidfd) even more than they already were before (timerfd,
signalfd, io_uring, epoll etc.). The core patchset is rather small.
The bulky looking changelist is caused by David's very simple changes
to Kconfig to make anon inodes unconditional.
A pidfd comes with additional information in fdinfo if the kernel
supports procfs. The fdinfo file contains the pid of the process in
the callers pid namespace in the same format as the procfs status
file, i.e. "Pid:\t%d".
To remove worries about missing metadata access this patchset comes
with a sample/test program that illustrates how a combination of
CLONE_PIDFD and pidfd_send_signal() can be used to gain race-free
access to process metadata through /proc/<pid>.
Further work based on this patchset has been done by Joel. His work
makes pidfds pollable. It finished too late for this merge window. I
would prefer to have it sitting in linux-next for a while and send it
for inclusion during the 5.3 merge window"
* tag 'pidfd-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
samples: show race-free pidfd metadata access
signal: support CLONE_PIDFD with pidfd_send_signal
clone: add CLONE_PIDFD
Make anon_inodes unconditional
Remove unnecessary assignment. This could potentially cause an issue, if
the wait function runs into a timeout. Furthermore is this assignment also
not there in stmpe_read_temp()
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
devm_iio_device_alloc() can only fail due to a memory or IDA allocation
failure. Hence there is no need to print a message, as the memory
allocation or IIO core code already takes care of that.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/iio/dac/ad5758.c: In function ad5758_write_powerdown:
drivers/iio/dac/ad5758.c:585:15: warning: variable dc_dc_mode set but not used [-Wunused-but-set-variable]
It is not used any more since
commit edde945257 ("iio: dac: ad5758: Modifications for new revision")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This new sysfs entry is used to interpret ring buffer information,
mainly by Android sensor HAL.
It expand to all sensors, the documentation about 'id' we can found
in Documentation/ABI/testing/sysfs-bus-iio-cros-ec.
Also fix typo in docs, I replace 'Septembre' by 'September'.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
During probe, check the devm_ioremap_resource() error value.
Also return the devm_clk_get() error value instead of -EINVAL.
Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add missing <of_device_id> table for SPI driver relying on SPI
device match since compatible is in a DT binding or in a DTS.
Before this patch:
modinfo drivers/iio/dac/ad5758.ko | grep alias
alias: spi:ad5758
After this patch:
modinfo drivers/iio/dac/ad5758.ko | grep alias
alias: spi:ad5758
alias: of:N*T*Cadi,ad5758C*
alias: of:N*T*Cadi,ad5758
Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add missing <of_device_id> table for SPI driver relying on SPI
device match since compatible is in a DT binding or in a DTS.
Before this patch:
modinfo drivers/iio/accel/adxl372_spi.ko | grep alias
After this patch:
modinfo drivers/iio/accel/adxl372_spi.ko | grep alias
alias: spi:adxl372
alias: of:N*T*Cadi,adxl372C*
alias: of:N*T*Cadi,adxl372
Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add missing <of_device_id> table for SPI driver relying on SPI
device match since compatible is in a DT binding or in a DTS.
Before this patch:
modinfo drivers/iio/accel/kxsd9-spi.ko | grep alias
alias: spi:kxsd9
After this patch:
modinfo drivers/iio/accel/kxsd9-spi.ko | grep alias
alias: spi:kxsd9
alias: of:N*T*Ckionix,kxsd9C*
alias: of:N*T*Ckionix,kxsd9
Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add missing <of_device_id> table for SPI driver relying on SPI
device match since compatible is in a DT binding or in a DTS.
Before this patch:
modinfo drivers/iio/temperature/maxim_thermocouple.ko | grep alias
alias: spi:max31855
alias: spi:max6675
After this patch:
modinfo drivers/iio/temperature/maxim_thermocouple.ko | grep alias
alias: spi:max31855
alias: spi:max6675
alias: of:N*T*Cmaxim,max31855C*
alias: of:N*T*Cmaxim,max31855
alias: of:N*T*Cmaxim,max6675C*
alias: of:N*T*Cmaxim,max6675
Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Daniel Gomez <dagmcr@gmail.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add support for new counter device to stm32-lptimer.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds support for the Generic Counter interface to the
104-QUAD-8 driver. The existing 104-QUAD-8 device interface should not
be affected by this patch; all changes are intended as supplemental
additions as perceived by the user.
Generic Counter Counts are created for the eight quadrature channel
counts, as well as their respective quadrature A and B Signals (which
are associated via respective Synapse structures) and respective index
Signals.
The new Generic Counter interface sysfs attributes are intended to
expose the same functionality and data available via the existing
104-QUAD-8 IIO device interface; the Generic Counter interface serves
to provide the respective functionality and data in a standard way
expected of counter devices.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
