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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc / IIO / other driver updates from Greg KH:
"Here is the big set of char/misc/iio and other smaller driver
subsystems for 6.17-rc1. It's a big set this time around, with the
huge majority being in the iio subsystem with new drivers and dts
files being added there.
Highlights include:
- IIO driver updates, additions, and changes making more code const
and cleaning up some init logic
- bus_type constant conversion changes
- misc device test functions added
- rust miscdevice minor fixup
- unused function removals for some drivers
- mei driver updates
- mhi driver updates
- interconnect driver updates
- Android binder updates and test infrastructure added
- small cdx driver updates
- small comedi fixes
- small nvmem driver updates
- small pps driver updates
- some acrn virt driver fixes for printk messages
- other small driver updates
All of these have been in linux-next with no reported issues"
* tag 'char-misc-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
binder: Use seq_buf in binder_alloc kunit tests
binder: Add copyright notice to new kunit files
misc: ti_fpc202: Switch to of_fwnode_handle()
bus: moxtet: Use dev_fwnode()
pc104: move PC104 option to drivers/Kconfig
drivers: virt: acrn: Don't use %pK through printk
comedi: fix race between polling and detaching
interconnect: qcom: Add Milos interconnect provider driver
dt-bindings: interconnect: document the RPMh Network-On-Chip Interconnect in Qualcomm Milos SoC
mei: more prints with client prefix
mei: bus: use cldev in prints
bus: mhi: host: pci_generic: Add Telit FN990B40 modem support
bus: mhi: host: Detect events pointing to unexpected TREs
bus: mhi: host: pci_generic: Add Foxconn T99W696 modem
bus: mhi: host: Use str_true_false() helper
bus: mhi: host: pci_generic: Add support for EM929x and set MRU to 32768 for better performance.
bus: mhi: host: Fix endianness of BHI vector table
bus: mhi: host: pci_generic: Disable runtime PM for QDU100
bus: mhi: host: pci_generic: Fix the modem name of Foxconn T99W640
dt-bindings: interconnect: qcom,msm8998-bwmon: Allow 'nonposted-mmio'
...
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Add chan parameter to iio_backend_oversampling_ratio_set() to allow
for contexts where the channel must be specified. Modify all
existing users.
Reviewed-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Pop Ioan Daniel <pop.ioan-daniel@analog.com>
Link: https://patch.msgid.link/20250605150948.3091827-3-pop.ioan-daniel@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add iio backend support for number of lanes to be enabled.
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250516082630.8236-4-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add backend support for staring the capture synchronization.
When activated, it initates a proccess that aligns the sample's most
significant bit (MSB) based solely on the captured data, without
considering any other external signals.
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250516082630.8236-3-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add backend support for digital filter type selection.
This setting can be adjusted within the IP cores interfacing devices.
The IP core can be configured based on the state of the actual
digital filter configuration of the part.
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250516082630.8236-2-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The buffer is set to 80 character. If a caller write more characters,
count is truncated to the max available space in "simple_write_to_buffer".
But afterwards a string terminator is written to the buffer at offset count
without boundary check. The zero termination is written OUT-OF-BOUND.
Add a check that the given buffer is smaller then the buffer to prevent.
Fixes: 035b4989211d ("iio: backend: make sure to NULL terminate stack buffer")
Signed-off-by: Markus Burri <markus.burri@mt.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20250508130612.82270-2-markus.burri@mt.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add backend support for getting the data source used.
The ad3552r HDL implements an internal ramp generator, so adding the
getter to allow data source get/set by debugfs.
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250409-wip-bl-ad3552r-fixes-v5-3-fb429c3a6515@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Make sure to NULL terminate the buffer in
iio_backend_debugfs_write_reg() before passing it to sscanf(). It is a
stack variable so we should not assume it will 0 initialized.
Fixes: cdf01e0809a4 ("iio: backend: add debugFs interface")
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250218-dev-iio-misc-v1-1-bf72b20a1eb8@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add backend support for setting oversampling ratio.
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250214131955.31973-4-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add backend support for setting the data size used.
This setting can be adjusted within the IP cores interfacing devices.
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250214131955.31973-3-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add backend support for obtaining the interface type used.
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250214131955.31973-2-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Clean up the existing export namespace code along the same lines of
commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo)
to __section("foo")") and for the same reason, it is not desired for the
namespace argument to be a macro expansion itself.
Scripted using
git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file;
do
awk -i inplace '
/^#define EXPORT_SYMBOL_NS/ {
gsub(/__stringify\(ns\)/, "ns");
print;
next;
}
/^#define MODULE_IMPORT_NS/ {
gsub(/__stringify\(ns\)/, "ns");
print;
next;
}
/MODULE_IMPORT_NS/ {
$0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g");
}
/EXPORT_SYMBOL_NS/ {
if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) {
if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ &&
$0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ &&
$0 !~ /^my/) {
getline line;
gsub(/[[:space:]]*\\$/, "");
gsub(/[[:space:]]/, "", line);
$0 = $0 " " line;
}
$0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/,
"\\1(\\2, \"\\3\")", "g");
}
}
{ print }' $file;
done
Requested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc
Acked-by: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next
Jonathan writes:
IIO: 2nd set of new device support, features and cleanup for 6.13
Alongside new drivers and device support there are several large
cleanups going on across the IIO tree and we see part of some of those
in this pull request.
Merged char-misc-next at point of 6.12-rc6 merge to avoid a
conflict with a fix for the ad7380 merged earlier this cycle.
Note that I previously messed this merge up and had to reconstruct
it this morning so a coherent pull request was possible. The new
stuff is all the same as has been in linux-next for some time with
the exception of the kernel-doc related __private ordering fix
that went in yesterday.
New device support
==================
adi,ad7380
- Support for adaq4370-4 and adaq4370 quad channel ADCs.
adi,ad7606
- Various cleanups preceeding support of AD7607, AD7608 and AD7609 ADCs.
adi,ad7779
- New driver supproting AD7770, AD7771 and AD7779 ADCs.
allegro,als31300
- New driver for this 3D Linear Hall Effect sensor.
bosch,bmi270
- Add support BMI260 which is similar but requires a different firmware image.
bosch,smi240
- New driver for this IMU.
ti,opt3001
- Add support opt3002 light sensor which has a wider spectral range than
the opt3001.
vishay,veml3235
- New driver for this ambient light sensor.
Features
========
hid-sensors
- Add support Human Proximity Range and Attention detection (requiring
a new classification style channel type)
adi,ad3552r
- Add backend support and related platform driver to support use
with an FPGA IP to allow QSPI + DDR bus operation and much higher
data aquisition rates. (various rework preceeded this feature)
adi,ad7606
- Various cleanup prior to enabling use with an IIO Backend and PWM trigger
enabling much higher speed data capture.
bosch,bme680
- Support control of preheat current
- Support triggered buffer capture
- Add SCALE and RAW channels (needed to enable the buffered capture).
bosch,bmp280
- Enable sleeping to save power.
- Add interrupt support for bmp3xx and bmp5xx devices. Also update bmp085
to new approach.
- Enable data ready trigger.
bosch,bmi270
- Add triggered buffer support
- Add scale and sampling frequency control.
vishay,veml6070
- Support integration time via DT binding for an external resistor value.
Cleanup and minor fixes
=======================
core
- Fix a longstanding issue with event codes for differential channels.
Note that not all drivers are yet fixed, but macros have been added
to avoid potential repeats of this in future.
- Tidy up handling in iio_read_acpi_mount matrix.
- Mark iio_dev::priv with __private. Later move the marking before the
field name to avoid a kernel-doc issue.
treewide
- Drop some pointless default n entries in Kconfig.
- Add an iio_get_acpi_device_name_and_data() handler to replace some
commonly repeated code.
- simplify use of 'state' in write_event_config() callback as it is
effectively a boolean. Once done make it a boolean (lots of drivers
were updated to enable this)
- some more use of devm_regulator_get_enable_read_voltage( to replace
open coded versions. Where this enables it convert all of remove
handling to devm based and drop the remove callback.
- check returns from devm_mutex_init()
accel drivers
- Use aligned_s64 instead of s64 __aligned(8)
adi,ad5791
- Add some missing GPIOs and power supplies that presumably were always
hard wired on previous boards.
- Refactor to use chip_info in device id tables.
- Convert probe entirely to devm based simplify code and allowing remove()
callback to be dropped.
adi,ad7192
- Check return from spi_get_device_match_data()
adi,ad74413r
- Don't keep an unnecessary copy of the gpio after probe.
- Use devm_regulator_get_enable_read_voltage() instead of open coding.
- Apply cleanup.h approach to reduce complexity.
adi,dac8460
- Fix a wrong compaitble ID due to a stray space.
- Add an spi_device_id table.
bosch,bmc150
- Drop some likely false ACPI IDs.
- Drop left over unused ACPI specific code.
bosch,bme680
- Add mising regmap.h include.
- Reduce excessive sleep on startup.
- Drop some cammelcase usage.
- Use fsleep
- Generalize read functions to allow for reuse.
- Use s16 variable to avoid some incorrect casting
bosch,bmg150
- Drop some likely false ACPI IDs.
bosch,bmi270
- Drop unused FREQUENCY and SCALE attributes that always returned an
error (they wil be back impelmented correctly).
- Factor out the chip specific data into a structure to enable simple
support for additional devices.
isil,isl29018
- Drop ACPI_PTR() and CONFIG_ACPI guards as not worth the trouble for very
minor saving.
invensense,mpu6050
- Use much simpler test for ACPI firmware.
kionix,kxcjk-1013
- Drop unnecessary ACPI entry in the i2c_device_id table.
- Drop support KX022-1020 to fix a bug that was introduced with that change.
Hopefully a fixed version will replace it soon.
- Drop CONFIG guards for PM in favor of pm_ptr() and the compiler removing
dead code.
- Switch from enum to chip_info structure and add ODR times to that structure.
- Deduplicate one of those ODR structures
- Drop ACPI_PTR() and move ID table out of config guards.
- Minor additional cleanup.
liteon,ltr401
- Drop some likely false ACPI Ids and add LTER0303 which is know to be in use.
microchip,pac1934
- Use much simpler test for ACPI firmware.
vishay,veml6070
- Use unsigned int instead of just unsigned.
- Use FIELD_PREP to make setting of field value explicit.
Various other minor fixes to documentation
* tag 'iio-for-6.13b' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (153 commits)
iio: Move __private marking before struct element priv in struct iio_dev
docs: iio: ad7380: add adaq4370-4 and adaq4380-4
iio: adc: ad7380: add support for adaq4370-4 and adaq4380-4
iio: adc: ad7380: use local dev variable to shorten long lines
iio: adc: ad7380: fix oversampling formula
dt-bindings: iio: adc: ad7380: add adaq4370-4 and adaq4380-4 compatible parts
iio: chemical: bme680: Add support for preheat current
iio: chemical: bme680: Add triggered buffer support
iio: chemical: bme680: Add SCALE and RAW channels
iio: chemical: bme680: refactorize set_mode() mode
iio: events: make IIO_EVENT_CODE macro private
iio: accel: mma9553: use specialized event code macros
iio: dummy: use specialized event code macros
iio: adc: ad7280a: use IIO_DIFF_EVENT_CODE macro helper
iio: events.h: add event identifier macros for differential channel
iio: magnetometer: add Allegro MicroSystems ALS31300 3-D Linear Hall Effect driver
dt-bindings: iio: magnetometer: document the Allegro MicroSystems ALS31300 3-D Linear Hall Effect Sensor
dt-bindings: vendor-prefixes: Add Allegro MicroSystems, Inc
iio: light: apds9960: remove useless return
iio: light: apds9960: convert als_int and pxs_int to bool
...
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Extend backend features with new calls needed later on this
patchset from axi version of ad3552r.
The follwoing calls are added:
iio_backend_ddr_enable()
enable ddr bus transfer
iio_backend_ddr_disable()
disable ddr bus transfer
iio_backend_data_stream_enable()
enable data stream over bus interface
iio_backend_data_stream_disable()
disable data stream over bus interface
iio_backend_data_transfer_addr()
define the target register address where the DAC sample
will be written.
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241028-wip-bl-ad3552r-axi-v0-iio-testing-v9-3-f6960b4f9719@kernel-space.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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It should be fwnode_back passed to IS_ERR().
Fixes: c464cc610f51 ("iio: add child nodes support in iio backend framework")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://patch.msgid.link/20241028135215.1549-1-yangyingliang@huaweicloud.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The debugfs_create_dir() function returns error pointers.
It never returns NULL. So use IS_ERR() to check it.
Signed-off-by: Yang Ruibin <11162571@vivo.com>
Link: https://patch.msgid.link/20240821083911.3411-1-11162571@vivo.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add an API to support IIO generic channels binding:
http://devicetree.org/schemas/iio/adc/adc.yaml#
This new API is needed, as generic channel DT node isn't populated as a
device.
Add devm_iio_backend_fwnode_get() to allow an IIO device backend
consumer to reference backend phandles in its child nodes.
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240730084640.1307938-4-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add iio_backend_disable() and iio_backend_enable() APIs to allow
IIO backend consumer to request backend disabling and enabling.
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240730084640.1307938-3-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add iio_backend_read_scale() and iio_backend_read_offset() services
to read channel scale and offset from an IIO backbend device.
Also add a read_raw callback which replicates the read_raw callback of
the IIO framework, and is intended to request miscellaneous channel
attributes from the backend device.
Both scale and offset helpers use this callback.
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240730084640.1307938-2-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This adds a basic debugfs interface for backends. Two new ops are being
added:
* debugfs_reg_access: Analogous to the core IIO one but for backend
devices.
* debugfs_print_chan_status: One useful usecase for this one is for
testing test tones in a digital interface and "ask" the backend to
dump more details on why a test tone might have errors.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-2-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Instead of only passing the backend ops when calling
devm_iio_backend_register(), pass an info like structure that will
contains the ops and additional information. Fow now, the backend name
is being added as that will be used by the debugFS interface introduced
in a later patch.
It also opens the door for further customizations passed by backends.
All users of devm_iio_backend_register() were updated accordingly.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-1-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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For APIs that have a return value, -EOPNOTSUPP is returned in case the
backend does not support the functionality. However, for APIs that do
not have a return value we are left in silence. Hence, at least print a
debug message in case the callback is not implemented by the backend.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240709-dev-iio-backend-add-debugfs-v1-2-fb4b8f2373c7@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Indio_dev was not being used in iio_backend_extend_chan_spec() so remove
it.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240709-dev-iio-backend-add-debugfs-v1-1-fb4b8f2373c7@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Using dev_err_cast_probe() to simplify the code.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240606-dev-add_dev_errp_probe-v3-3-51bb229edd79@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This is in preparation for supporting interface tuning in one for the
devices using the axi-adc backend. The new added interfaces are all
needed for that calibration:
* iio_backend_test_pattern_set();
* iio_backend_chan_status();
* iio_backend_iodelay_set();
* iio_backend_data_sample_trigger().
Interface tuning is the process of going through a set of known points
(typically by the frontend), change some clk or data delays (or both)
and send/receive some known signal (so called test patterns in this
change). The receiving end (either frontend or the backend) is
responsible for validating the signal and see if it's good or not. The
goal for all of this is to come up with ideal delays at the data
interface level so we can have a proper, more reliable data transfer.
Also note that for some devices we can change the sampling rate
(which typically means changing some reference clock) and that can
affect the data interface. In that case, it's import to run the tuning
algorithm again as the values we had before may no longer be the best (or
even valid) ones.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240426-ad9467-new-features-v2-2-6361fc3ba1cc@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Using tabs and maintaining the start of the docs aligned is a pain and
may lead to lot's of unrelated changes when adding new members. Hence,
let#s change things now and just have a simple space after the member
name.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240426-ad9467-new-features-v2-1-6361fc3ba1cc@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This adds the needed backend ops for supporting a backend inerfacing
with an high speed dac. The new ops are:
* data_source_set();
* set_sampling_freq();
* extend_chan_spec();
* ext_info_set();
* ext_info_get().
Also to note the new helpers that are meant to be used by the backends
when extending an IIO channel (adding extended info):
* iio_backend_ext_info_set();
* iio_backend_ext_info_get().
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240419-iio-backend-axi-dac-v4-8-5ca45b4de294@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This is a Framework to handle complex IIO aggregate devices.
The typical architecture is to have one device as the frontend device which
can be "linked" against one or multiple backend devices. All the IIO and
userspace interface is expected to be registers/managed by the frontend
device which will callback into the backends when needed (to get/set
some configuration that it does not directly control).
The basic framework interface is pretty simple:
- Backends should register themselves with @devm_iio_backend_register()
- Frontend devices should get backends with @devm_iio_backend_get()
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240210-iio-backend-v11-5-f5242a5fb42a@analog.com
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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