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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"The bulk of this is a series of fixes for the microchip-core driver
mostly originating from one of their customers, I also applied an
additional patch adding support for controlling the word size which
came along with it since it's still the merge window and clearly had a
bunch of fairly thorough testing.
We also have a fix for the compatible used to bind spidev to the
BH2228FV"
* tag 'spi-fix-v6.11-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: spidev: add correct compatible for Rohm BH2228FV
dt-bindings: trivial-devices: fix Rohm BH2228FV compatible string
spi: microchip-core: add support for word sizes of 1 to 32 bits
spi: microchip-core: ensure TX and RX FIFOs are empty at start of a transfer
spi: microchip-core: fix init function not setting the master and motorola modes
spi: microchip-core: only disable SPI controller when register value change requires it
spi: microchip-core: defer asserting chip select until just before write to TX FIFO
spi: microchip-core: fix the issues in the isr
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When Maxime originally added the BH2228FV to the spidev driver, he spelt
it incorrectly - the d should have been a b. Add the correctly spelt
compatible to the driver. Although the majority of users of this
compatible are abusers, there is at least one board that validly uses
the incorrect spelt compatible, so keep it in the driver to avoid
breaking the few real users it has.
Fixes: 8fad805bdc52 ("spi: spidev: Add Rohm DH2228FV DAC compatible string")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20240717-ventricle-strewn-a7678c509e85@spud
Signed-off-by: Mark Brown <broonie@kernel.org>
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The current implementation only supports a word size of 8 bits,
which limits the devices it can be used with. Add support for any
word size between 1 and 32 bits, as supported by the hardware.
Signed-off-by: Steve Wilkins <steve.wilkins@raymarine.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20240715-cogwheel-uniquely-0d4ef518b809@wendy
Signed-off-by: Mark Brown <broonie@kernel.org>
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While transmitting with rx_len == 0, the RX FIFO is not going to be
emptied in the interrupt handler. A subsequent transfer could then
read crap from the previous transfer out of the RX FIFO into the
start RX buffer. The core provides a register that will empty the RX and
TX FIFOs, so do that before each transfer.
Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
Signed-off-by: Steve Wilkins <steve.wilkins@raymarine.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20240715-flammable-provoke-459226d08e70@wendy
Signed-off-by: Mark Brown <broonie@kernel.org>
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mchp_corespi_init() reads the CONTROL register, sets the master and
motorola bits, but doesn't write the value back to the register. The
function also doesn't ensure the controller is disabled at the start,
which may present a problem if the controller was used by an
earlier boot stage as some settings (including the mode) can only be
modified while the controller is disabled.
Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
Signed-off-by: Steve Wilkins <steve.wilkins@raymarine.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20240715-designing-thus-05f7c26e1da7@wendy
Signed-off-by: Mark Brown <broonie@kernel.org>
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requires it
Setting up many of the registers for a new SPI transfer involves
unconditionally disabling the SPI controller, writing the register
value and re-enabling the controller. This is being done for registers
even when the value is unchanged and is also done for registers that
don't require the controller to be disabled for the change to take
effect. Make an effort to detect changes to the register values, and
only disables the controller if the new register value is different
and disabling the controller is required. This stops the controller
being repeated disabled and the bus going tristate before every
transfer.
Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
Signed-off-by: Steve Wilkins <steve.wilkins@raymarine.com>
Co-developed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20240715-depict-twirl-7e592eeabaad@wendy
Signed-off-by: Mark Brown <broonie@kernel.org>
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TX FIFO
Setting up many of the registers for a new SPI transfer requires the
SPI controller to be disabled after set_cs() has been called to assert
the chip select line. However, disabling the controller results in the
SCLK and MOSI output pins being tristate, which can cause clock
transitions to be seen by a slave device whilst SS is active. To fix
this, the CS is only set to inactive inline, whilst setting it active
is deferred until all registers are set up and the any controller
disables have been completed.
Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
Signed-off-by: Steve Wilkins <steve.wilkins@raymarine.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20240715-sanitizer-recant-dd96b7a97048@wendy
Signed-off-by: Mark Brown <broonie@kernel.org>
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It is possible for the TXDONE interrupt be raised if the tx FIFO becomes
temporarily empty while transmitting, resulting in recursive calls to
mchp_corespi_write_fifo() and therefore a garbage message might be
transmitted depending on when the interrupt is triggered. Moving all of
the tx FIFO writes out of the TXDONE portion of the interrupt handler
avoids this problem.
Most of rest of the TXDONE portion of the handler is problematic too.
Only reading the rx FIFO (and finalising the transfer) when the TXDONE
interrupt is raised can cause the transfer to stall, if the final bytes
of rx data are not available in the rx FIFO when the final TXDONE
interrupt is raised. The transfer should be finalised regardless of
which interrupt is raised, provided that all tx data has been set and
all rx data received.
The first issue was encountered "in the wild", the second is
theoretical.
Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
Signed-off-by: Naga Sureshkumar Relli <nagasuresh.relli@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20240715-candied-deforest-585685ef3c8a@wendy
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the big set of driver core changes for 6.11-rc1.
Lots of stuff in here, with not a huge diffstat, but apis are evolving
which required lots of files to be touched. Highlights of the changes
in here are:
- platform remove callback api final fixups (Uwe took many releases
to get here, finally!)
- Rust bindings for basic firmware apis and initial driver-core
interactions.
It's not all that useful for a "write a whole driver in rust" type
of thing, but the firmware bindings do help out the phy rust
drivers, and the driver core bindings give a solid base on which
others can start their work.
There is still a long way to go here before we have a multitude of
rust drivers being added, but it's a great first step.
- driver core const api changes.
This reached across all bus types, and there are some fix-ups for
some not-common bus types that linux-next and 0-day testing shook
out.
This work is being done to help make the rust bindings more safe,
as well as the C code, moving toward the end-goal of allowing us to
put driver structures into read-only memory. We aren't there yet,
but are getting closer.
- minor devres cleanups and fixes found by code inspection
- arch_topology minor changes
- other minor driver core cleanups
All of these have been in linux-next for a very long time with no
reported problems"
* tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits)
ARM: sa1100: make match function take a const pointer
sysfs/cpu: Make crash_hotplug attribute world-readable
dio: Have dio_bus_match() callback take a const *
zorro: make match function take a const pointer
driver core: module: make module_[add|remove]_driver take a const *
driver core: make driver_find_device() take a const *
driver core: make driver_[create|remove]_file take a const *
firmware_loader: fix soundness issue in `request_internal`
firmware_loader: annotate doctests as `no_run`
devres: Correct code style for functions that return a pointer type
devres: Initialize an uninitialized struct member
devres: Fix memory leakage caused by driver API devm_free_percpu()
devres: Fix devm_krealloc() wasting memory
driver core: platform: Switch to use kmemdup_array()
driver core: have match() callback in struct bus_type take a const *
MAINTAINERS: add Rust device abstractions to DRIVER CORE
device: rust: improve safety comments
MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer
MAINTAINERS: add Rust FW abstractions to FIRMWARE LOADER
firmware: rust: improve safety comments
...
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In the match() callback, the struct device_driver * should not be
changed, so change the function callback to be a const *. This is one
step of many towards making the driver core safe to have struct
device_driver in read-only memory.
Because the match() callback is in all busses, all busses are modified
to handle this properly. This does entail switching some container_of()
calls to container_of_const() to properly handle the constant *.
For some busses, like PCI and USB and HV, the const * is cast away in
the match callback as those busses do want to modify those structures at
this point in time (they have a local lock in the driver structure.)
That will have to be changed in the future if they wish to have their
struct device * in read-only-memory.
Cc: Rafael J. Wysocki <rafael@kernel.org>
Reviewed-by: Alex Elder <elder@kernel.org>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lore.kernel.org/r/2024070136-wrongdoer-busily-01e8@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc and other driver updates from Greg KH:
"Here is the "big" set of char/misc and other driver subsystem changes
for 6.11-rc1. Nothing major in here, just loads of new drivers and
updates. Included in here are:
- IIO api updates and new drivers added
- wait_interruptable_timeout() api cleanups for some drivers
- MODULE_DESCRIPTION() additions for loads of drivers
- parport out-of-bounds fix
- interconnect driver updates and additions
- mhi driver updates and additions
- w1 driver fixes
- binder speedups and fixes
- eeprom driver updates
- coresight driver updates
- counter driver update
- new misc driver additions
- other minor api updates
All of these, EXCEPT for the final Kconfig build fix for 32bit
systems, have been in linux-next for a while with no reported issues.
The Kconfig fixup went in 29 hours ago, so might have missed the
latest linux-next, but was acked by everyone involved"
* tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits)
misc: Kconfig: exclude mrvl-cn10k-dpi compilation for 32-bit systems
misc: delete Makefile.rej
binder: fix hang of unregistered readers
misc: Kconfig: add a new dependency for MARVELL_CN10K_DPI
virtio: add missing MODULE_DESCRIPTION() macro
agp: uninorth: add missing MODULE_DESCRIPTION() macro
spmi: add missing MODULE_DESCRIPTION() macros
dev/parport: fix the array out-of-bounds risk
samples: configfs: add missing MODULE_DESCRIPTION() macro
misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver
misc: keba: Fix missing AUXILIARY_BUS dependency
slimbus: Fix struct and documentation alignment in stream.c
MAINTAINERS: CC dri-devel list on Qualcomm FastRPC patches
misc: fastrpc: use coherent pool for untranslated Compute Banks
misc: fastrpc: support complete DMA pool access to the DSP
misc: fastrpc: add missing MODULE_DESCRIPTION() macro
misc: fastrpc: Add missing dev_err newlines
misc: fastrpc: Use memdup_user()
nvmem: core: Implement force_ro sysfs attribute
nvmem: Use sysfs_emit() for type attribute
...
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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 6.11
The big one here is we finally have Paul Cercueil's (and others)
DMA buffer support for IIO devices enabling high speed zero
copy transfer of data to and from sensors supported by IIO (and for
example USB). This should aid with upstream support of a range of
higher performance ADCs and DACs.
Two merges from other trees
- spi/spi_devm_optimize used for simplification in ad7944.
- dmaengine/topic_dma_vec to enable the DMABUF series.
One feature with impact outside IIO.
- Richer set of dev_err_probe() like helpers to cover ERR_PTR() cases.
New device support
==================
adi,ad7173
- Add support for AD4111, AD4112, AD4114, AD4115 and ADC4116 pseudo
differential ADCs. Major driver rework was needed to enabled these.
adi,ad7944
- Use devm_spi_optimize_message() to avoid a local devm cleanup
callback. This is the example case from the patch set, others will
follow.
mediatek,mt6359-auxadc
- New driver for this ADC IP found in MT6357, MT6358 and MT6359 PMICs.
st,accel
- Add support for the LIS2DS12 accelerometer
ti,ads1119
- New driver for this 16 bit 2-differential or 4-single ended channel
ADC.
Features
========
dt-bindings
- Introduce new common-mode-channel property to help handle pseudo
differential ADCs where we have something that looks like one side
of differential input, but which is only suited for use with a
slow moving reference.
adi,adf4350
- Support use as a clock provider.
iio-hmwon
- Support reading of labels from IIO devices by their consumers and
use this in the hwmon bridge.
Cleanup and minor fixes
=======================
Treewide
- Use regmap_clear_bits() / regmap_set_bits() to simplify open coded
equivalents.
- Use devm_regulator_get_enable_read_voltage() to replace equivalent
opencoded boilerplate. In some cases enabled complete conversion to
devm handling and removal of explicit remove() callbacks.
- Introduce dev_err_ptr_probe() and other variants and make use of
of them in a couple of examples driver cleanups. Will find use in
many more drivers soon.
adi,ad7192
- Introduce local struct device *dev and use dev_err_probe() to give
more readable code.
adi,adi-axi-adc/dac
- Improved consistency of messages using dev_err_probe()
adi,adis
- Split the trigger handling into cases that needed paging and those that
don't resulting in more readable code.
- Use cleanup.h to simplify error paths via scoped cleanup.
- Add adis specific lock helpers and make use of them in a number of drivers.
adi,ad7192
- Update maintainer (Alisa-Dariana Roman)
adi,ad7606
- dt-binding cleanup.
avago,apds9306
- Add a maintainer entry (Subhajit Ghosh)
linear,ltc2309
- Fix a wrong endian type.
st,stm32-dfsdm
- Fix a missing port property in the dt-binding.
st,sensors
- Relax whoami match failure to a warning print rather than probe failure.
This enables fallback compatibles to existing parts from those that don't
necessarily even exit yet.
* tag 'iio-for-6.11b' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (112 commits)
iio: adc: ad7173: Fix uninitialized symbol is_current_chan
iio: adc: Add support for MediaTek MT6357/8/9 Auxiliary ADC
math.h: Add unsigned 8 bits fractional numbers type
dt-bindings: iio: adc: Add MediaTek MT6359 PMIC AUXADC
iio: common: scmi_iio: convert to dev_err_probe()
iio: backend: make use of dev_err_cast_probe()
iio: temperature: ltc2983: convert to dev_err_probe()
dev_printk: add new dev_err_probe() helpers
iio: xilinx-ams: Add labels
iio: adc: ad7944: use devm_spi_optimize_message()
Documentation: iio: Document high-speed DMABUF based API
iio: buffer-dmaengine: Support new DMABUF based userspace API
iio: buffer-dma: Enable support for DMABUFs
iio: core: Add new DMABUF interface infrastructure
MAINTAINERS: Update AD7192 driver maintainer
iio: adc: ad7192: use devm_regulator_get_enable_read_voltage
iio: st_sensors: relax WhoAmI check in st_sensors_verify_id()
MAINTAINERS: Add AVAGO APDS9306
dt-bindings: iio: adc: adi,ad7606: comment and sort the compatible names
dt-bindings: iio: adc: adi,ad7606: add missing datasheet link
...
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'devmodel' hasn't actually been used since:
'commit 3275158fa52a ("parport: remove use of devmodel")'
and everyone now has it set to true and has been fixed up; remove
the flag.
(There are still comments all over about it)
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20240502154823.67235-4-linux@treblig.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"There's some quite exciting core work in this release, we've got the
beginnings of support for hardware initiated transfers which is itself
independently useful for optimising fast paths in existing drivers.
We also have a rework of the DMA mapping which allows finer grained
decisions about DMA mapping messages and also helps remove some bodges
that we'd had.
Otherwise it's a fairly quiet release, a few new drivers and features
for existing drivers, together with various cleanups and DT binding
conversions.
One regmap SPI fix made it's way in here too which I should probably
have sent as a regmap fix instead.
Summary:
- Support for pre-optimising messages, reducing the overhead for
messages that are repeatedly used (eg, reading the interrupt status
from a device). This will also be used for hardware initiated
transfers in future.
- A reworking of how DMA mapping is done, introducing a new helper
and allowing the DMA mapping decision to be done per transfer
instead of per message.
- Support for Atmel SAMA7D64, Freescale LX2160A DSPI and WCH CH341A"
* tag 'spi-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (72 commits)
spi: dt-bindings: at91: Add sama7d65 compatible string
spi: add ch341a usb2spi driver
spi: dt-bindings: fsl-dspi: add compatible string 'fsl,lx2160a-dspi'
spi: dt-bindings: fsl-dspi: add dmas and dma-names properties
spi: spi: Remove unnecessary ‘0’ values from status
spi: spi: Remove unnecessary ‘0’ values from rc
spi: xcomm: fix coding style
spi: xcomm: remove i2c_set_clientdata()
spi: xcomm: make use of devm_spi_alloc_host()
spi: xcomm: add gpiochip support
spi: dt-bindings: snps,dw-apb-ssi.yaml: update compatible property
spi: dt-bindings: fsl-dspi: Convert to yaml format
spi: fsl-dspi: use common proptery 'spi-cs-setup(hold)-delay-ns'
spi: axi-spi-engine: remove platform_set_drvdata()
spi: spi-fsl-lpspi: Pass pm_ptr()
spi: spi-imx: Pass pm_ptr()
spi: spi-fsl-lpspi: Switch to SYSTEM_SLEEP_PM_OPS()
spi: spi-imx: Switch to RUNTIME_PM_OPS/SYSTEM_SLEEP_PM_OPS()
spi: add EXPORT_SYMBOL_GPL(devm_spi_optimize_message)
spi: add devm_spi_optimize_message() helper
...
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Add a driver for the QiHeng Electronics ch341a USB-to-SPI adapter.
This driver is loosely based on the ch341a module from the flashrom project.
Signed-off-by: Johannes Thumshirn <jth@kernel.org>
Link: https://patch.msgid.link/20240708-spi-ch341a-v3-1-cf7f9b2c1e31@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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status is assigned first, so it does not need to initialize the assignment.
Signed-off-by: Li zeming <zeming@nfschina.com>
Link: https://patch.msgid.link/20240708041411.14424-1-zeming@nfschina.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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rc is assigned first, so it does not need to initialize the assignment.
Signed-off-by: Li zeming <zeming@nfschina.com>
Link: https://patch.msgid.link/20240708035320.14241-1-zeming@nfschina.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Just cosmetics. No functional change intended.
While at it, removed a couple of redundant else if() statements.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240705-dev-spi-xcomm-gpiochip-v2-4-b10842fc9636@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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i2c_get_clientdata() is not being called anywhere so that we do not need
to set clientdata.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240705-dev-spi-xcomm-gpiochip-v2-3-b10842fc9636@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use devm_spi_alloc_host() so that there's no need to call
spi_controller_put() in the error path.
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240705-dev-spi-xcomm-gpiochip-v2-2-b10842fc9636@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The hardware can expose one pin as a GPO. Hence, register a simple
gpiochip to support it.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Co-developed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240705-dev-spi-xcomm-gpiochip-v2-1-b10842fc9636@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Use SPI common DT binding properties 'spi-cs-setup-delay-ns' and
'spi-cs-hold-delay-ns'. If these properties do not exist, fall back to
legacy 'fsl,spi-cs-sck-delay' and 'fsl,spi-sck-cs-delay'.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://patch.msgid.link/20240624-ls_qspi-v4-1-3d1c6f5005bf@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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platform_get_drvdata() is never called in the AXI SPI Engine driver, so
platform_set_drvdata() is not needed. Remove it. This also lets us
avoid the final error check in the probe function.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240626-spi-axi-spi-engine-remove-drvdata-v1-1-1752e372dd5d@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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After coverting to SYSTEM_SLEEP_PM_OPS, it is necessary to pass pm_ptr()
to the PM operations.
Fix it accordingly.
Fixes: 6765e859fac9 ("spi: spi-fsl-lpspi: Switch to SYSTEM_SLEEP_PM_OPS()")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Link: https://patch.msgid.link/20240625183919.368770-2-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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After coverting to RUNTIME_PM_OPS/SYSTEM_SLEEP_PM_OPS, it is necessary
to pass pm_ptr() to the PM operations.
Fix it accordingly.
Fixes: a93f089ccf82 ("spi: spi-imx: Switch to RUNTIME_PM_OPS/SYSTEM_SLEEP_PM_OPS()")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Link: https://patch.msgid.link/20240625183919.368770-1-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from David Lechner <dlechner@baylibre.com>:
In the IIO subsystem, we are finding that it is common to call
spi_optimize_message() during driver probe since the SPI message
doesn't change for the lifetime of the driver. This patch adds a
devm_spi_optimize_message() helper to simplify this common pattern.
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devm_spi_optimize_message() is a public function and needs
EXPORT_SYMBOL_GPL.
Reported-by: Jonathan Cameron <jic23@kernel.org>
Closes: https://lore.kernel.org/linux-iio/20240624204424.6a91a5e4@jic23-huawei/
Fixes: d4a0055fdc22 ("spi: add devm_spi_optimize_message() helper")
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240624-devm_spi_optimize_message-v2-1-58155c0180c2@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Replace SET_SYSTEM_SLEEP_PM_OPS with its modern SYSTEM_SLEEP_PM_OPS()
alternative.
The combined usage of pm_ptr() and SYSTEM_SLEEP_PM_OPS()
allows the compiler to evaluate if the runtime suspend/resume() functions
are used at build time or are simply dead code.
This allows removing the __maybe_unused notation from the runtime
suspend/resume() functions.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Link: https://patch.msgid.link/20240625002023.228235-2-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Replace SET_RUNTIME_PM_OPS()/SET SYSTEM_SLEEP_PM_OPS() with their modern
RUNTIME_PM_OPS() and SYSTEM_SLEEP_PM_OPS() alternatives.
The combined usage of pm_ptr() and RUNTIME_PM_OPS/SYSTEM_SLEEP_PM_OPS()
allows the compiler to evaluate if the runtime suspend/resume() functions
are used at build time or are simply dead code.
This allows removing the __maybe_unused notation from the runtime
suspend/resume() functions.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Link: https://patch.msgid.link/20240625002023.228235-1-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from David Lechner <dlechner@baylibre.com>:
In the IIO subsystem, we are finding that it is common to call
spi_optimize_message() during driver probe since the SPI message
doesn't change for the lifetime of the driver. This patch adds a
devm_spi_optimize_message() helper to simplify this common pattern.
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This adds a new helper function devm_spi_optimize_message() that
automatically registers spi_unoptimize_message() to be called
when the device is removed.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240621-devm_spi_optimize_message-v1-2-3f9dcba6e95e@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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While in commit 2dd33f9cec90 ("spi: imx: support DMA for imx35") it was
claimed that DMA works on i.MX25, i.MX31 and i.MX35 the respective
device trees don't add DMA channels. The Reference manuals of i.MX31 and
i.MX25 also don't mention the CSPI core being DMA capable. (I didn't
check the others.)
Since commit e267a5b3ec59 ("spi: spi-imx: Use dev_err_probe for failed
DMA channel requests") this results in an error message
spi_imx 43fa4000.spi: error -ENODEV: can't get the TX DMA channel!
during boot. However that isn't fatal and the driver gets loaded just
fine, just without using DMA.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://patch.msgid.link/20240508095610.2146640-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
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OEMs can connect a number of types of speakers to the sidecar cs35l56
amplifiers and a different speaker requires a different firmware
configuration.
When the cs42l43 ACPI includes a property indicating a particular type
of speaker has been installed this should be passed to the cs35l56
driver instances as a device property.
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20240619121703.3411989-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Refactor accessing the SDCA extension properties to make it easier to
access multiple properties to assist with future features. Return the
node itself and allow the caller to read the actual properties.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20240619121703.3411989-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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We need the fixes to apply new changes to the Cirrus drivers.
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When spi-cadence is configured as a slave, it requires the SPI refclk to
detect the synchronization start condition while communicating with the
master. However, the spi-cadence driver never enables the SPI refclk in
slave mode, causing the refclk to remain disabled if the
"clk_ignore_unused" kernel parameter is not passed through bootargs.
As a result, the slave cannot detect data sent by the master, leading to
communication failure. Update driver to enable the SPI refclk in both
master and slave configurations.
Fixes: b1b90514eaa3 ("spi: spi-cadence: Add support for Slave mode")
Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com>
Link: https://msgid.link/r/20240617153837.29861-1-amit.kumar-mahapatra@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Refactor accessing the SDCA extension properties to make it easier to
access multiple properties to assist with future features. Return the
node itself and allow the caller to read the actual properties.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://msgid.link/r/20240611132556.1557075-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add spicc loopback mode for debugging convenience.
Signed-off-by: Sunny Luo <sunny.luo@amlogic.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240612-spi_lbc-v1-1-d52e8c8011bd@amlogic.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Merge series from Andy Shevchenko <andriy.shevchenko@linux.intel.com>:
The first part of the series (patches 1 to 7) is an introduction
of a new helper followed by the user conversion.
This consolidates the same code and also makes patch 8 (last one)
be localised to the SPI core part.
The last patch is the main rework to get rid of a recently introduced
hack with a dummy SG list and move to the transfer-based DMA mapped
flag.
That said, the patches 1 to 7 may be applied right away since they
have no functional change intended, while the last one needs more
testing and reviewing.
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The granularity of DMA mappings is transfer and moreover,
the direction is also important as it can be unidirect.
The current cur_msg_mapped flag doesn't fit well the DMA mapping
and syncing calls and we have tons of checks around on top of it.
So, instead of doing that rework the code to use per transfer per
direction flag to show if it's DMA mapped or not.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240531194723.1761567-9-andriy.shevchenko@linux.intel.com
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Replace a few lines of code by calling a spi_xfer_is_dma_mapped() helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240531194723.1761567-8-andriy.shevchenko@linux.intel.com
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Replace a few lines of code by calling a spi_xfer_is_dma_mapped() helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240531194723.1761567-7-andriy.shevchenko@linux.intel.com
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Replace a few lines of code by calling a spi_xfer_is_dma_mapped() helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240531194723.1761567-6-andriy.shevchenko@linux.intel.com
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Replace a few lines of code by calling a spi_xfer_is_dma_mapped() helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240531194723.1761567-5-andriy.shevchenko@linux.intel.com
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Replace a few lines of code by calling a spi_xfer_is_dma_mapped() helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240531194723.1761567-4-andriy.shevchenko@linux.intel.com
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Replace a few lines of code by calling a spi_xfer_is_dma_mapped() helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240531194723.1761567-3-andriy.shevchenko@linux.intel.com
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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There are few drivers that use the same pattern to check if the transfer
is DMA mapped or not. Provide a helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Link: https://lore.kernel.org/r/20240531194723.1761567-2-andriy.shevchenko@linux.intel.com
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/spi/spi-altera-core.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/spi/spi-fsl-lib.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/spi/spi-omap2-mcspi.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/spi/spi-qup.o
Add the missing invocations of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240609-md-drivers-spi-v1-1-1c7444f53cde@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add SPI clock flag CLK_SET_RATE_PARENT for using pclk as parent clock.
This gives SPI more flexibility in frequency selection.
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Signed-off-by: Sunny Luo <sunny.luo@amlogic.com>
Link: https://lore.kernel.org/r/20240524-spi_pclk_setparent-v1-1-99e0ce70b66f@amlogic.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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PCI driver has an additional device layer for enumeration.
Remove that layer and use spi-pxa2xx code directly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://msgid.link/r/20240530151117.1130792-12-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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