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1,309,163 commits

Author SHA1 Message Date
Inochi Amaoto
d21fe1e9a6 pinctrl: pinconf-generic: Add support for "input-schmitt-microvolt" property
Add "input-schmitt-microvolt" property to generic options used for DT
parsing files. This enables drivers, which use generic pin configurations,
to get the value passed to this property.

Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
Link: https://lore.kernel.org/IA1PR20MB4953806785BA04E075DC4F03BBAC2@IA1PR20MB4953.namprd20.prod.outlook.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-08-04 00:54:49 +02:00
Inochi Amaoto
737df10956 dt-bindings: pincfg-node: Add "input-schmitt-microvolt" property
On Sophgo CV18XX platform, threshold strength of schmitt trigger can
be configured. As this standard property is already supported by the
common pinconf code. Add "input-schmitt-microvolt" property in
pincfg-node.yaml so that other platforms requiring such feature can
make use of this property.

Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/IA1PR20MB4953C71C87FD150D2E64FF41BBAC2@IA1PR20MB4953.namprd20.prod.outlook.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-08-04 00:54:49 +02:00
Théo Lebrun
41795aa1f5 pinctrl: eyeq5: add platform driver
Add the Mobileye EyeQ5 pin controller driver. It belongs to a syscon
region called OLB and gets spawned as auxiliary device to the platform
driver for clock.

Existing pins and their function live statically in the driver code
rather than in the devicetree, see compatible match data.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/20240730-mbly-pinctrl-v2-2-d470f64e0395@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-08-04 00:51:28 +02:00
Théo Lebrun
1451576eef Revert "dt-bindings: pinctrl: mobileye,eyeq5-pinctrl: add bindings"
Switch from one sub-node per functionality in the system-controller to a
single node representing the entire OLB instance. This is the
recommended approach for controllers handling many different
functionalities; it is a single controller and should be represented by
a single devicetree node.

The pinctrl bindings is removed and all properties will be described by:
soc/mobileye/mobileye,eyeq5-olb.yaml

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/20240730-mbly-pinctrl-v2-1-d470f64e0395@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-08-04 00:51:28 +02:00
Linus Torvalds
defaf1a211 SCSI fixes on 20240803
One core change that reverts the double message print patch in sd.c
 (it was causing regressions on embedded systems).  The rest are driver
 fixes in ufs, mpt3sas and mpi3mr.
 
 Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "One core change that reverts the double message print patch in sd.c
  (it was causing regressions on embedded systems).

  The rest are driver fixes in ufs, mpt3sas and mpi3mr"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ufs: exynos: Don't resume FMP when crypto support is disabled
  scsi: mpt3sas: Avoid IOMMU page faults on REPORT ZONES
  scsi: mpi3mr: Avoid IOMMU page faults on REPORT ZONES
  scsi: ufs: core: Do not set link to OFF state while waking up from hibernation
  scsi: Revert "scsi: sd: Do not repeat the starting disk message"
  scsi: ufs: core: Fix deadlock during RTC update
  scsi: ufs: core: Bypass quick recovery if force reset is needed
  scsi: ufs: core: Check LSDBS cap when !mcq
2024-08-03 15:12:56 -07:00
David S. Miller
83044bf90e Merge branch 'netns-init-cleanups' into main
Kuniyuki Iwashima says:

====================
net: Random cleanup for netns initialisation.

patch 1 & 2 suppress unwanted memory allocation for net->gen->ptr[].

patch 3 ~ 6 move part of netns initialisation to prenet_init() that
do not require pernet_ops_rwsem.

v2:
  patch 1 : Removed Fixes: tag
  patch 2 : Use XOR for WARN_ON()

v1: https://lore.kernel.org/netdev/20240729210801.16196-1-kuniyu@amazon.com/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2024-08-03 22:38:45 +01:00
Kuniyuki Iwashima
8eaf71f77c net: Initialise net.core sysctl defaults in preinit_net().
Commit 7c3f1875c6 ("net: move somaxconn init from sysctl code")
introduced net_defaults_ops to make sure that net.core sysctl knobs
are always initialised even if CONFIG_SYSCTL is disabled.

Such operations better fit preinit_net() added for a similar purpose
by commit 6e77a5a4af ("net: initialize net->notrefcnt_tracker earlier").

Let's initialise the sysctl defaults in preinit_net().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-08-03 22:38:45 +01:00
Kuniyuki Iwashima
05be801259 net: Slim down setup_net().
Most initialisations in setup_net() do not require pernet_ops_rwsem
and can be moved to preinit_net().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-08-03 22:38:45 +01:00
Kuniyuki Iwashima
9302994918 net: Call preinit_net() without pernet_ops_rwsem.
When initialising the root netns, we call preinit_net() under
pernet_ops_rwsem.

However, the operations in preinit_net() do not require pernet_ops_rwsem.

Also, we don't hold it for preinit_net() when initialising non-root netns.

To be consistent, let's call preinit_net() without pernet_ops_rwsem in
net_ns_init().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-08-03 22:38:44 +01:00
Kuniyuki Iwashima
2b5afc1d5d net: Initialise net->passive once in preinit_net().
When initialising the root netns, we set net->passive in setup_net().

However, we do it twice for non-root netns in copy_net_ns() and
setup_net().

This is because we could bypass setup_net() in copy_net_ns() if
down_read_killable() fails.

preinit_net() is a better place to put such an operation.

Let's initialise net->passive in preinit_net().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-08-03 22:38:44 +01:00
Kuniyuki Iwashima
768e4bb6a7 net: Don't register pernet_operations if only one of id or size is specified.
We can allocate per-netns memory for struct pernet_operations by specifying
id and size.

register_pernet_operations() assigns an id to pernet_operations and later
ops_init() allocates the specified size of memory as net->gen->ptr[id].

If id is missing, no memory is allocated.  If size is not specified,
pernet_operations just wastes an entry of net->gen->ptr[] for every netns.

net_generic is available only when both id and size are specified, so let's
ensure that.

While we are at it, we add const to both fields.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-08-03 22:38:44 +01:00
Kuniyuki Iwashima
1ad001347f l2tp: Don't assign net->gen->ptr[] for pppol2tp_net_ops.
Commit fd558d186d ("l2tp: Split pppol2tp patch into separate l2tp and
ppp parts") converted net->gen->ptr[pppol2tp_net_id] in l2tp_ppp.c to
net->gen->ptr[l2tp_net_id] in l2tp_core.c.

Now the leftover wastes one entry of net->gen->ptr[] in each netns.

Let's avoid the unwanted allocation.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-08-03 22:38:44 +01:00
Linus Torvalds
d3426a6ed9 Bug fixes for 6.11-rc1:
* Fix memory leak when corruption is detected during scrubbing parent
     pointers.
   * Allow SECURE namespace xattrs to use reserved block pool to in order to
     prevent ENOSPC.
   * Save stack space by passing tracepoint's char array to file_path() instead
     of another stack variable.
   * Remove unused parameter in macro XFS_DQUOT_LOGRES.
   * Replace comma with semicolon in a couple of places.
 
 Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.11-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Chandan Babu:

 - Fix memory leak when corruption is detected during scrubbing parent
   pointers

 - Allow SECURE namespace xattrs to use reserved block pool to in order
   to prevent ENOSPC

 - Save stack space by passing tracepoint's char array to file_path()
   instead of another stack variable

 - Remove unused parameter in macro XFS_DQUOT_LOGRES

 - Replace comma with semicolon in a couple of places

* tag 'xfs-6.11-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: convert comma to semicolon
  xfs: convert comma to semicolon
  xfs: remove unused parameter in macro XFS_DQUOT_LOGRES
  xfs: fix file_path handling in tracepoints
  xfs: allow SECURE namespace xattrs to use reserved block pool
  xfs: fix a memory leak
2024-08-03 09:09:25 -07:00
Linus Torvalds
1dd950f288 parisc architecture fixes for kernel v6.11-rc2:
- fix unaligned memory accesses when calling BPF functions
 - adjust memory size constants to fix possible DMA corruptions
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Merge tag 'parisc-for-6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc architecture fixes from Helge Deller:

 - fix unaligned memory accesses when calling BPF functions

 - adjust memory size constants to fix possible DMA corruptions

* tag 'parisc-for-6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: fix a possible DMA corruption
  parisc: fix unaligned accesses in BPF
2024-08-03 09:03:21 -07:00
Francesco Dolcini
de80af5c2f iio: adc: ads1119: Fix IRQ flags
Remove IRQF_TRIGGER_FALLING flag from irq request, this should come from
the platform firmware and should not be hard-coded into the driver.

Add IRQF_ONESHOT flag to the irq request, the interrupt should not be
re-activated in interrupt context, it should be done only after the
device irq handler run.

Fixes: a9306887eb ("iio: adc: ti-ads1119: Add driver")
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviwed-by: João Paulo Gonçalves <jpaulo.silvagoncalves@gmail.com>
Link: https://patch.msgid.link/20240731140657.88265-1-francesco@dolcini.it
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 16:47:13 +01:00
Linus Torvalds
b6547e5486 runtime constants: deal with old decrepit linkers
The runtime constants linker script depended on documented linker
behavior [1]:

 "If an output section’s name is the same as the input section’s name
  and is representable as a C identifier, then the linker will
  automatically PROVIDE two symbols: __start_SECNAME and __stop_SECNAME,
  where SECNAME is the name of the section. These indicate the start
  address and end address of the output section respectively"

to just automatically define the symbol names for the bounds of the
runtime constant arrays.

It turns out that this isn't actually something we can rely on, with old
linkers not generating these automatic symbols.  It looks to have been
introduced in binutils-2.29 back in 2017, and we still support building
with versions all the way back to binutils-2.25 (from 2015).

And yes, Oleg actually seems to be using such ancient versions of
binutils.

So instead of depending on the implicit symbols from "section names
match and are representable C identifiers", just do this all manually.
It's not like it causes us any extra pain, we already have to do that
for all the other sections that we use that often have special
characters in them.

Reported-and-tested-by: Oleg Nesterov <oleg@redhat.com>
Link: https://sourceware.org/binutils/docs/ld/Input-Section-Example.html [1]
Link: https://lore.kernel.org/all/20240802114518.GA20924@redhat.com/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-08-03 08:38:45 -07:00
Matteo Martelli
8a3dcc970d iio: fix scale application in iio_convert_raw_to_processed_unlocked
When the scale_type is IIO_VAL_INT_PLUS_MICRO or IIO_VAL_INT_PLUS_NANO
the scale passed as argument is only applied to the fractional part of
the value. Fix it by also multiplying the integer part by the scale
provided.

Fixes: 48e44ce0f8 ("iio:inkern: Add function to read the processed value")
Signed-off-by: Matteo Martelli <matteomartelli3@gmail.com>
Link: https://patch.msgid.link/20240730-iio-fix-scale-v1-1-6246638c8daa@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 16:29:32 +01:00
Dumitru Ceclan
6f055df6f6 iio: adc: ad7124: set initial ADC mode to idle
During setup the st->adc_control is 0, which corresponds to a continuous
conversion mode. The reset value for channel 1 is to enable it. The
combined effect of these two is that the ADC will start conversions for
channel 1 without them being read.
This is not neccessarily a problem, but it is an unexpected behavior.

Set the ADC state to idle during setup to avoid this.

Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240731-ad7124-fix-v1-4-46a76aa4b9be@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 16:05:53 +01:00
Dumitru Ceclan
b7eef979b7 iio: adc: ad7124: reduce the number of SPI transfers
The ad7124_init_config_vref() function writes the AD7124_ADC_CONTROL
register for each channel that is configured to use the internal
reference.

The ad7124_write_config()function performs 7 SPI transfers for
configuring 2 registers: config_x and filter_x.

Reduce the number of SPI transfers:
-during the probe by only setting the st->adc_control value in
 ad7124_init_config_vref() and writing to the device only at the end of
 ad7124_setup().
-in ad7124_write_config() by grouping writes to the same register.

Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240731-ad7124-fix-v1-3-46a76aa4b9be@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 16:05:15 +01:00
Dumitru Ceclan
2f6b92d0f6 iio: adc: ad7124: fix config comparison
The ad7124_find_similar_live_cfg() computes the compare size by
substracting the address of the cfg struct from the address of the live
field. Because the live field is the first field in the struct, the
result is 0.

Also, the memcmp() call is made from the start of the cfg struct, which
includes the live and cfg_slot fields, which are not relevant for the
comparison.

Fix by grouping the relevant fields with struct_group() and use the
size of the group to compute the compare size; make the memcmp() call
from the address of the group.

Fixes: 7b8d045e49 ("iio: adc: ad7124: allow more than 8 channels")
Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240731-ad7124-fix-v1-2-46a76aa4b9be@analog.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 16:02:55 +01:00
Dumitru Ceclan
96f9ab0d59 iio: adc: ad7124: fix chip ID mismatch
The ad7124_soft_reset() function has the assumption that the chip will
assert the "power-on reset" bit in the STATUS register after a software
reset without any delay. The POR bit =0 is used to check if the chip
initialization is done.

A chip ID mismatch probe error appears intermittently when the probe
continues too soon and the ID register does not contain the expected
value.

Fix by adding a 200us delay after the software reset command is issued.

Fixes: b3af341bbd ("iio: adc: Add ad7124 support")
Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240731-ad7124-fix-v1-1-46a76aa4b9be@analog.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 16:01:47 +01:00
Abhash Jha
13fad2607d iio: light: ltr390: Add configurable gain and resolution
Add support for configuring and reading the gain and resolution
(integration time). Also provide the available values for gain and
resoltion respectively via `read_avail` callback.

Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240731063706.25412-2-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 15:01:11 +01:00
Nuno Sa
d6b133a664 iio: adc: ad9467: add digital interface test to debugfs
One useful thing to do (in case of problems) in this high speed devices
with digital interfaces is to try different test patterns to see if the
interface is working properly (and properly calibrated). Hence add this
to debugfs.

On top of this, for some test patterns, the backend may have a matching
validator block which can be helpful in identifying possible issues. For
the other patterns some test equipment must be used so one can look into
the signal and see how it looks like.

Hence, we also add the backend debugfs interface with
iio_backend_debugfs_add().

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-8-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 14:36:45 +01:00
Nuno Sa
5b30937b0b iio: adc: ad9467: add backend test mode helpers
Group the backend configurations to be done in preparing and stopping
calibration in two new helpers analogous to ad9467_testmode_set(). This
is in preparation for adding support for debugFS test_mode where
we need similar configurations as in the calibration process.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-7-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 14:36:45 +01:00
Nuno Sa
c031fee042 iio: adc: adi-axi-adc: implement backend debugfs interface
Implement debugfs options to read/write registers and print the channel
status into a buffer (so we may know better the cause for errors) .

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-6-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 14:36:45 +01:00
Nuno Sa
232cca61cf iio: adc: adi-axi-adc: split axi_adc_chan_status()
Add a new axi_adc_read_chan_status() helper so we get the raw register
value out of it.

This is in preparation of a future change where we really want to look
into dedicated bits of the register.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-5-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 14:36:45 +01:00
Nuno Sa
53d7a77dac iio: adc: adi-axi-adc: support modified prbs23
Add support for configuring the prbs23 sequence.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-4-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 14:36:45 +01:00
Nuno Sa
b001635a7c iio: backend: add a modified prbs23 support
Support ADI specific prb23 sequence that can be used both for
calibrating or debugging digital interfaces.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240802-dev-iio-backend-add-debugfs-v2-3-4cb62852f0d0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 14:36:45 +01:00
Nuno Sa
cdf01e0809 iio: backend: add debugFs interface
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>
2024-08-03 14:36:45 +01:00
Nuno Sa
2256f37e24 iio: backend: introduce struct iio_backend_info
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>
2024-08-03 14:36:45 +01:00
Rob Herring (Arm)
958000dfa3 iio: adc: aspeed: Use of_property_present()
Use of_property_present() to test for property presence rather than
of_find_property(). This is part of a larger effort to remove callers
of of_find_property() and similar functions. of_find_property() leaks
the DT struct property and data pointers which is a problem for
dynamically allocated nodes which may be freed.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Link: https://patch.msgid.link/20240731191312.1710417-5-robh@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 12:19:03 +01:00
Kyle Swenson
c4b28e5699 net: pse-pd: tps23881: Fix the device ID check
The DEVID register contains two pieces of information: the device ID in
the upper nibble, and the silicon revision number in the lower nibble.
The driver should work fine with any silicon revision, so let's mask
that out in the device ID check.

Fixes: 20e6d190ff ("net: pse-pd: Add TI TPS23881 PSE controller driver")
Signed-off-by: Kyle Swenson <kyle.swenson@est.tech>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-08-03 12:17:06 +01:00
Javier Carrasco
72c80a9320 iio: adc: ad7768-1: use device_* to iterate over device child nodes
Drop the manual access to the fwnode of the device to iterate over its
child nodes. `device_for_each_child_node` macro provides direct access
to the child nodes, and given that they are only required within the
loop, the scoped variant of the macro can be used.

Use the `device_for_each_child_node_scoped` macro to iterate over the
direct child nodes of the device.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240801-device_child_node_access-v1-2-ddfa21bef6f2@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 12:12:55 +01:00
Julien Stephan
1ca99efa17 docs: iio: ad7380: add support for single-ended parts
The AD7380 family has some compatible single-ended chips: AD7386/7/8(-4).
These single-ended chips have a  2:1 multiplexer in front of each ADC.
They also include additional configuration registers that allow for either
manual selection or automatic switching (sequencer mode), of the
multiplexer inputs. Add a section to describe this.

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-7-cd63bf05744c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 11:33:35 +01:00
Julien Stephan
d4c6ff182d iio: adc: ad7380: enable sequencer for single-ended parts
ad7386/7/8(-4) single-ended parts have a 2:1 mux in front of each ADC.

>From an IIO point of view, all inputs are exported, i.e ad7386/7/8
export 4 channels and ad7386-4/7-4/8-4 export 8 channels. First inputs
of muxes correspond to the first half of IIO channels (i.e 0-1 or 0-3)
and second inputs correspond to second half (i.e 2-3 or 4-7)

Currently, the driver supports only sampling first half OR second half of
the IIO channels. To enable sampling all channels simultaneously, these
parts have an internal sequencer that automatically cycles through the
mux entries.

When enabled, the maximum throughput is divided by two. Moreover, the ADCs
need additional settling time, so we add an extra CS toggle to correctly
propagate setting, and an additional spi transfer to read the second
half.

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-6-cd63bf05744c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 11:33:35 +01:00
Julien Stephan
ae20f31d3d iio: adc: ad7380: add support for single-ended parts
Adding ad7386/7/8 (16/14/12 bits) unsigned, dual simultaneous sampling,
single-ended compatible parts, and the corresponding ad7386-4/7-4/8-4
4 channels.

These parts have a 2:1 multiplexer in front of each ADC. They also include
additional configuration registers that allow for either manual selection
or automatic switching (sequencer mode), of the multiplexer inputs.
This commit focus on integrating manual selection. Sequencer mode will
be implemented later.

>From an IIO point of view, all inputs are exported, i.e ad7386/7/8
export 4 channels and ad7386-4/7-4/8-4 export 8 channels.

Inputs AinX0 of multiplexers correspond to the first half of IIO channels
(i.e 0-1 or 0-3) and inputs AinX1 correspond to second half (i.e 2-3 or
4-7). Example for AD7386/7/8 (2 channels parts):

          IIO   | AD7386/7/8
                |         +----------------------------
                |         |     _____        ______
                |         |    |     |      |      |
       voltage0 | AinA0 --|--->|     |      |      |
                |         |    | mux |----->| ADCA |---
       voltage2 | AinA1 --|--->|     |      |      |
                |         |    |_____|      |_____ |
                |         |     _____        ______
                |         |    |     |      |      |
       voltage1 | AinB0 --|--->|     |      |      |
                |         |    | mux |----->| ADCB |---
       voltage3 | AinB1 --|--->|     |      |      |
                |         |    |_____|      |______|
                |         |
                |         +----------------------------

When switching channel, the ADC require an additional settling time.
According to the datasheet, data is valid on the third CS low. We already
have an extra toggle before each read (either direct reads or buffered
reads) to sample correct data, so we just add a single CS toggle at the
end of the register write.

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-5-cd63bf05744c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 11:33:35 +01:00
Julien Stephan
d4d7e29778 iio: adc: ad7380: prepare driver for single-ended parts support
ad738x family contains single-ended parts that have a 2:1 mux in front
of ADC, so the number of IIO channels is different from the number of
simultaneous channels that can be sampled.

To prepare the support for single-ended parts, introduce a new
num_simultaneous_channels variable. For currently supported parts,
num_simultaneous_channels is equal to num_channels minus 1 (the
timestamps channel)

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-4-cd63bf05744c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 11:33:34 +01:00
Julien Stephan
65c89a5ac6 iio: adc: ad7380: add missing trailing commas
Add missing trailing commas in iio_scan_type structures

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-3-cd63bf05744c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 11:33:34 +01:00
Julien Stephan
d092b68698 iio: core: add function to retrieve active_scan_mask index
Add a function to retrieve the index of the active scan mask inside the
available scan masks array.

As in iio_scan_mask_match and iio_sanity_check_avail_scan_masks,
this function does not handle multi-long masks correctly.
It only checks the first long to be zero, and will use such mask
as a terminator even if there was bits set after the first long.

This should be fine since the available_scan_mask has already been
sanity tested using iio_sanity_check_avail_scan_masks.

See iio_scan_mask_match and iio_sanity_check_avail_scan_masks for
more details

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-2-cd63bf05744c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 11:33:34 +01:00
Julien Stephan
2043594d64 dt-bindings: iio: adc: ad7380: add single-ended compatible parts
Adding ad7386/7/8 single-ended compatible parts, and the corresponding
ad7386-4/7-4/8-4 4 channels.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-1-cd63bf05744c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 11:33:10 +01:00
Marcelo Schmitt
dfcc937a00 Documentation: Add AD4000 documentation
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Tested-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/aeee5fd9deccf85beadecf58c9b938b97a3aeba5.1720810545.git.marcelo.schmitt@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 10:55:34 +01:00
Marcelo Schmitt
938fd562b9 iio: adc: Add support for AD4000
Add support for AD4000 series of low noise, low power, high speed,
successive approximation register (SAR) ADCs.

Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Link: https://patch.msgid.link/356109ac61182f16f2379d5d0cadccfe017f505b.1720810545.git.marcelo.schmitt@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 10:53:54 +01:00
Jonathan Cameron
b71fdd65ca spi: Support MOSI idle configuration
Add support for configuring the idle state of the MOSI signal in
 controllers.
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Merge tag 'spi-mosi-config' into togreg

spi: Support MOSI idle configuration

Add support for configuring the idle state of the MOSI signal in
controllers.
2024-08-03 10:52:08 +01:00
Antoniu Miclaus
6140a92cd0 iio: frequency: adf4377: add adf4378 support
Add separate handling for adf4378 within the driver.

The main difference between adf4377 and adf4378 is that adf4378 has only
one output which is handled by only one gpio.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20240729095047.25040-3-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 10:13:45 +01:00
Antoniu Miclaus
87bcd0f949 dt-bindings: iio: adf4377: add adf4378 support
The adf4378 provides only one output channel. Therefore there is only
one gpio available to enable the output. Reflect that into the bindings
using property conditions.

Add product link for the adf4378.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20240729095047.25040-2-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 10:13:44 +01:00
Kaustabh Chakraborty
f38d4650b5 dt-bindings: iio: light: stk33xx: add compatible for stk3013
STK3013 is a proximity sensor by Sensortek, bearing chipid of 0x31. Despite
being marketed as a proximity sensor, it also appears to have ambient
light sensing capabilities.

The part is fully compatible with the existing implementation of the
device driver. Add the compatible string of stk3013 to the existing
list, with a fallback of stk3310.

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20240727-stk3310-v4-3-02497b1407ba@disroot.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 10:13:44 +01:00
Kaustabh Chakraborty
a50f537002 iio: light: stk3310: add support for stk3013
Add support for Sensortek's STK3013 in the driver. The part bears the
product ID 0x31.

As seen in [1], Sensortek lists STK3013 as a proximity sensor. But it
has been experimentally observed that they do have ambient light sensing
capabilities. Furthermore, [2] implements a proximity and ambient light
sensor driver for STK3x1x devices, which is also indicative of the fact
that these parts are also ambient light sensors.

[1] https://www.sensortek.com.tw/index.php/en/products/optical-sensor/
[2] https://android.googlesource.com/kernel/msm.git/+/e6dfa4641d88201e8019be19ff557e5d2cf4572f

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Link: https://patch.msgid.link/20240727-stk3310-v4-2-02497b1407ba@disroot.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 10:13:44 +01:00
Kaustabh Chakraborty
b3508a2ba5 iio: light: stk3310: relax chipid check warning
In order to allow newer devices which are compatible with existing
sensors, issuing a warning for an unknown chipid indicates that
something has gone wrong with the init process, which isn't ideal.
Swap it with a friendlier info message to get things right.

Suggested-by: Conor Dooley <conor@kernel.org>
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Link: https://patch.msgid.link/20240727-stk3310-v4-1-02497b1407ba@disroot.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 10:13:44 +01:00
David Lechner
02e0a02c56 iio: adc: ti-tsc2046: use devm_regulator_get_enable_read_voltage()
Use devm_regulator_get_enable_read_voltage() to replace
tsc2046_adc_configure_regulator() which does the same thing.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240725-iio-regulator-refactor-round-4-v1-1-55e9dc1de325@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 10:13:44 +01:00
Petar Stoykov
f7578fd467 MAINTAINERS: Add Sensirion SDP500
Add myself as a maintainer for Sensirion SDP500 pressure sensor driver

Signed-off-by: Petar Stoykov <pd.pstoykov@gmail.com>
Link: https://patch.msgid.link/20240725-mainline_sdp500-v4-3-ea2f5b189958@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-08-03 10:13:44 +01:00