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Similar to existing use of guard() in this driver,
iio_device_claim_direct_scoped() will ensure that scope based cleanup
occurs.
Reviewed-by: Nuno Sa <nuno.a@analog.com>
Link: https://lore.kernel.org/r/20240128150537.44592-5-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Switching to the iio_device_claim_direct_scoped() for state
and to guard() based unlocking of mutexes simplifies error handling
by allowing direct returns when an error is encountered.
Reviewed-by: Nuno Sa <nuno.a@analog.com>
Link: https://lore.kernel.org/r/20240128150537.44592-4-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Given we now have iio_device_claim_direct_scoped() to perform automatic
releasing of direct mode at exit from the scope that follows it, this can
be used in conjunction with guard(mutex) etc remove a lot of special case
handling.
Note that in this particular example code, there is no real reason you can't
read channels via sysfs at the same time as filling the software buffer.
To make it look more like a real driver constrain raw and processed
channel reads from occurring whilst the buffer is in use.
Reviewed-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sa <nuno.a@analog.com>
Link: https://lore.kernel.org/r/20240128150537.44592-3-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Allows use of:
iio_device_claim_direct_scoped(return -EBUSY, indio_dev) {
}
to automatically call iio_device_release_direct_mode() based on scope.
Typically seen in combination with local device specific locks which
are already have automated cleanup options via guard(mutex)(&st->lock)
and scoped_guard(). Using both together allows most error handling to
be automated.
Reviewed-by: Nuno Sa <nuno.a@analog.com>
Link: https://lore.kernel.org/r/20240128150537.44592-2-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
We're doing some needless string copies when trying to assign the proper
`prop` string. We can make `prop` a const char* and simply assign to
string literals.
For the case where a format string is used, let's extract the parsing
logic out into sx9324_parse_phase_prop(). We no longer need to create
copies or allocate new memory.
sx9324_parse_phase_prop() will simply return the default def value if it
fails.
This also cleans up some deprecated strncpy() uses [1].
Furthermore, let's clean up this code further by removing some unused
defines:
| #define SX9324_PIN_DEF "semtech,ph0-pin"
| #define SX9324_RESOLUTION_DEF "semtech,ph01-resolution"
| #define SX9324_PROXRAW_DEF "semtech,ph01-proxraw-strength"
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://github.com/KSPP/linux/issues/90
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20240201-strncpy-drivers-iio-proximity-sx9324-c-v5-1-78dde23553bc@google.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Dual microwave down converter module with input RF and LO frequency
ranges from 0.5 to 32 GHz and an output IF frequency range from 0.1 to
8 GHz. It consists of a LNA, mixer, IF filter, DSA, and IF amplifier
for each down conversion path.
Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com>
Link: https://lore.kernel.org/r/20240123081059.5746-2-kimseer.paller@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Dual microwave down converter module with input RF and LO frequency
ranges from 0.5 to 32 GHz and an output IF frequency range from 0.1 to
8 GHz. It consists of a LNA, mixer, IF filter, DSA, and IF amplifier
for each down conversion path.
Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240123081059.5746-1-kimseer.paller@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Use a device lifecycle managed IIO helper functions. This helps prevent
mistakes like unregistering and freeing out of order in cleanup functions
and forgetting to unregister and free on error paths.
Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240123140918.215818-4-afd@ti.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Use a device lifecycle managed action for regulator disable function.
This helps prevent mistakes like unregistering out of order in cleanup
functions and forgetting to unregister on error paths.
Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240123140918.215818-3-afd@ti.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Use a device lifecycle managed IIO helper functions. This helps prevent
mistakes like unregistering and freeing out of order in cleanup functions
and forgetting to unregister and free on error paths.
Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240123140918.215818-2-afd@ti.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Use a device lifecycle managed action for regulator disable function.
This helps prevent mistakes like unregistering out of order in cleanup
functions and forgetting to unregister on error paths.
Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240123140918.215818-1-afd@ti.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Some light sensors can adjust both the HW-gain and integration time.
There are cases where adjusting the integration time has similar impact
to the scale of the reported values as gain setting has.
IIO users do typically expect to handle scale by a single writable 'scale'
entry. Driver should then adjust the gain/time accordingly.
It however is difficult for a driver to know whether it should change
gain or integration time to meet the requested scale. Usually it is
preferred to have longer integration time which usually improves
accuracy, but there may be use-cases where long measurement times can be
an issue. Thus it can be preferable to allow also changing the
integration time - but mitigate the scale impact by also changing the gain
underneath. Eg, if integration time change doubles the measured values,
the driver can reduce the HW-gain to half.
The theory of the computations of gain-time-scale is simple. However,
some people (undersigned) got that implemented wrong for more than once.
Hence some gain-time-scale helpers were introduced.
Add some simple tests to verify the most hairy functions.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/0f7505b43f91394dc3bb636369489c897b7e01a7.1705328293.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The vcnl4040/vcnl4200 proximity sensor defaults to 12 bit data
resolution, but the chip also supports 16 bit data resolution, which is
called proximity high definition (PS_HD).
Make the vcnl4040/vcnl4200 proximity sensor use the high definition for
all data readings. Please note that in order to preserve the 12 bit
integer part of the in_proximity_raw output, the format is changed from
integer to fixed point.
Signed-off-by: Mårten Lindahl <marten.lindahl@axis.com>
Link: https://lore.kernel.org/r/20231221-vcnl4000-ps-hd-v3-1-6dcc889372be@axis.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Make sure we can specify the IRQ trigger type from firmware and drivers
won't ignore it. In fact, this how it should be done but since someone
might be already depending on the driver to hardcode the trigger type
(and not specifying it in firmware), let's do it like this so there's
no possible breakage.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240117-dev_sigma_delta_no_irq_flags-v1-2-db39261592cf@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
There's no need to call both irq_get_irq_data() and
irqd_get_trigger_type() as we already have an helper for that. This
allows for code simplification.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240117-adis-improv-v1-3-7f90e9fad200@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
There's no need to call both irq_get_irq_data() and
irqd_get_trigger_type() as we already have an helper for that. This
allows for code simplification.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240117-adis-improv-v1-2-7f90e9fad200@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Drop kernel-doc comments for struct fields that were removed to
prevent kernel-doc warnings:
iio_dummy_evgen.c:43: warning: Excess struct member 'irq_sim' description in 'iio_dummy_eventgen'
iio_dummy_evgen.c:43: warning: Excess struct member 'base' description in 'iio_dummy_eventgen'
Fixes: 337cbeb2c13e ("genirq/irq_sim: Simplify the API")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20240121055005.20042-1-rdunlap@infradead.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
RTQ6053 and RTQ6059 are the same series of RTQ6056.
The respective differences with RTQ6056 are listed below
RTQ6053
- chip package type
RTQ6059
- Reduce the pinout for vbus sensing pin
- Some internal ADC scaling change
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/3541207c4727e3a76b9a3caf88ef812a4d47b764.1704676198.git.cy_huang@richtek.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Respect the @dev argument in devm_iio_dmaengine_buffer_setup() and bind the
IIO DMA buffer lifetime to that device.
For the only user of this function, the IIO parent device is the
struct device being passed to the API so no real fix in here (just
consistency with other IIO APIs).
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240109-dmaengine_use_device-v1-1-1cbdb7fe9f29@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This replaces use of individual buffer mode flags with
INDIO_ALL_BUFFER_MODES in the iio_buffer_enabled() function.
This simplifies the code and makes it robust in case of the addition of
new buffer modes.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240108200647.3916681-1-dlechner@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
File entry has driver/iio/adc two times. Fix the file entry
Found by ./scripts/get_maintainer.pl --self-test=patterns
Signed-off-by: Amit Dhingra <mechanicalamit@gmail.com>
Reviewed-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Link: https://lore.kernel.org/r/CAO=gReEUr4B+E2mQsSrncHf41f0A915SuoWgA522_2Ts-dZbSg@mail.gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Replace seekdir() with rewinddir() in order to fix a localized glibc bug.
One of the glibc patches that stable Gentoo is using causes an improper
directory stream positioning bug on 32bit arm. That in turn ends up as a
floating point exception in iio_generic_buffer.
The attached patch provides a fix by using an equivalent function which
should not cause trouble for other distros and is easier to reason about
in general as it obviously always goes back to to the start.
https://sourceware.org/bugzilla/show_bug.cgi?id=31212
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Link: https://lore.kernel.org/r/20240108103224.3986-1-petre.rodan@subdimension.ro
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The variable period is being initialized with a value that is never
read, it is being re-assigned a new value later on before it is read.
The initialization is redundant and can be removed.
Cleans up clang scan build warning:
Value stored to 'period' during its initialization is never
read [deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://lore.kernel.org/r/20240106153202.54861-1-colin.i.king@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The complexity of config guards needed for ACPI_PTR() is not worthwhile
for the small amount of saved data. This example was doing it correctly
but I am proposing dropping this so as to reduce chance of cut and paste
where it is done wrong.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-25-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The complexity of config guards needed for ACPI_PTR() is not worthwhile
for the small amount of saved data. This example was doing it correctly
but I am proposing dropping this so as to reduce chance of cut and paste
where it is done wrong. Also drop now unneeded linux/acpi.h include and
added linux/mod_devicetable.h for struct acpi_device_id definition.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-24-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The complexity of config guards needed for ACPI_PTR() is not worthwhile
for the small amount of saved data. This example was doing it correctly
but I am proposing dropping this so as to reduce chance of cut and paste
where it is done wrong. Also drop now unneeded linux/acpi.h include and
added linux/mod_devicetable.h for struct acpi_device_id definition.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-23-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The complexity of config guards needed for ACPI_PTR() is not worthwhile
for the small amount of saved data. This example was doing it correctly
but I am proposing dropping this so as to reduce chance of cut and paste
where it is done wrong. Also drop now unneeded linux/acpi.h include.
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Denis CIOCCA <denis.ciocca@st.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-22-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Switch include from acpi.h to mod_devicetable.h which includes the
definition of struct acpi_device_id.
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-21-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Switch include from acpi.h to mod_devicetable.h which includes the
definition of struct acpi_device_id.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-20-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Switch include from acpi.h to mod_devicetable.h which includes the
definition of struct acpi_device_id.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311190738.gldzuIXo-lkp@intel.com/
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-18-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Switch include from acpi.h to mod_devicetable.h which includes the
definition of struct acpi_device_id.
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-17-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Switch include from acpi.h to mod_devicetable.h which includes the
definition of struct acpi_device_id.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-16-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Include linux/mod_devicetable.h which includes the definition of
struct acpi_device_id (hence somewhat related to the main change)
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-15-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Switch include from acpi.h to mod_devicetable.h which includes the
definition of struct acpi_device_id.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-14-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-13-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Switch include to mod_devicetable.h as that contains the only
ACPI specific definitions needed in this driver.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-11-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Switch include to mod_devicetable.h as that contains the only
ACPI specific definitions needed in this driver.
Cc: Mike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-10-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
In general the complexity of avoiding maybe unused variable warnings is
not worth dealing with for the small amount of data saved. In thie
case, the i2c driver does include some other code under a CONFIG_ACPI
guard but remove the ACPI_PTR() usage anyway to bring keep it inline
with the spi driver.
Drop include of linux/acpi.h in the spi driver that doesn't need
it as struct acpi_device_id is defined in mod_devicetable.h which
is already included.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-9-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Avoiding unused variable warnings when using this macro adds
complexity that in simple cases like this one is not justified
for the small saving in data.
Switch include to mod_devicetable.h as that contains the only
ACPI specific definitions needed in this driver.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20231231183514.566609-8-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
