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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 <[email protected]>
Reviewed-by: Alex Elder <[email protected]>
Acked-by: Sumit Garg <[email protected]>
Link: https://lore.kernel.org/r/2024070136-wrongdoer-busily-01e8@gregkh
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver updates from Greg KH:
"Here is the big set of Staging driver cleanups for 6.9-rc1. Nothing
major in here, lots of small coding style cleanups for most drivers,
and the removal of some obsolete hardare (the emxx_udc and some
drivers/staging/board/ files).
All of these have been in linux-next for a long time with no reported
issues"
* tag 'staging-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (122 commits)
staging: greybus: Replaces directive __attribute__((packed)) by __packed as suggested by checkpatch
staging: greybus: Replace __attribute__((packed)) by __packed in various instances
Staging: rtl8192e: Rename function GetHalfNmodeSupportByAPsHandler()
Staging: rtl8192e: Rename function rtllib_FlushRxTsPendingPkts()
Staging: rtl8192e: Rename goto OnADDBARsp_Reject
Staging: rtl8192e: Rename goto OnADDBAReq_Fail
Staging: rtl8192e: Rename function rtllib_send_ADDBARsp()
Staging: rtl8192e: Rename function rtllib_send_ADDBAReq()
Staging: rtl8192e: Rename variable TxRxSelect
Staging: rtl8192e: Fix 5 chckpatch alignment warnings in rtl819x_BAProc.c
Staging: rtl8192e: Rename function MgntQuery_MgntFrameTxRate
Staging: rtl8192e: Rename boolean variable bHalfWirelessN24GMode
Staging: rtl8192e: Rename reference AllowAllDestAddrHandler
Staging: rtl8192e: Rename varoable asSta
Staging: rtl8192e: Rename varoable osCcxVerNum
Staging: rtl8192e: Rename variable CcxAironetBuf
Staging: rtl8192e: Rename variable osCcxAironetIE
Staging: rtl8192e: Rename variable AironetIeOui
Staging: rtl8192e: Rename variable asRsn
Staging: rtl8192e: Rename variable CcxVerNumBuf
...
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Since commit 43a7206b0963 ("driver core: class: make class_register() take
a const *"), the driver core allows for struct class to be in read-only
memory, so move the fieldbus_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.
Cc: Greg Kroah-Hartman <[email protected]>
Suggested-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: "Ricardo B. Marliere" <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Convert the i.MX Wireless External Interface Module binding to YAML.
Signed-off-by: Sebastian Reichel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Krzysztof Kozlowski <[email protected]>
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Now that the driver core can properly handle constant struct bus_type,
move the anybus_bus variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.
Suggested-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Ricardo B. Marliere <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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ida_alloc() and ida_free() should be preferred to the deprecated
ida_simple_get() and ida_simple_remove().
Note that the upper limit of ida_simple_get() is exclusive, but the one of
ida_alloc_max() is inclusive. So a -1 has been added when needed.
Signed-off-by: Christophe JAILLET <[email protected]>
Link: https://lore.kernel.org/r/d305b97b1064ba7e026232fb8c2a0783ba1b1098.1705227001.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Now that the driver core allows for struct class to be in read-only
memory, making all 'class' structures to be declared at build time
placing them into read-only memory, instead of having to be dynamically
allocated at load time.
Cc: Sven Van Asbroeck <[email protected]>
Link: https://lore.kernel.org/r/2023100552-entrench-dingbat-093a@gregkh
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The driver depends on CONFIG_OF, it is not necessary to use
of_match_ptr() here.
Signed-off-by: Ruan Jinjie <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Since platform_get_irq() never returned zero, so it need not to check
whether it returned zero, and we use the return error code of
platform_get_irq() to replace the current return error code, for that
platform_get_irq() may return -EINVAL or -ENXIO.
Signed-off-by: Zhu Wang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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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 large set of driver core changes for 6.4-rc1.
Once again, a busy development cycle, with lots of changes happening
in the driver core in the quest to be able to move "struct bus" and
"struct class" into read-only memory, a task now complete with these
changes.
This will make the future rust interactions with the driver core more
"provably correct" as well as providing more obvious lifetime rules
for all busses and classes in the kernel.
The changes required for this did touch many individual classes and
busses as many callbacks were changed to take const * parameters
instead. All of these changes have been submitted to the various
subsystem maintainers, giving them plenty of time to review, and most
of them actually did so.
Other than those changes, included in here are a small set of other
things:
- kobject logging improvements
- cacheinfo improvements and updates
- obligatory fw_devlink updates and fixes
- documentation updates
- device property cleanups and const * changes
- firwmare loader dependency fixes.
All of these have been in linux-next for a while with no reported
problems"
* tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (120 commits)
device property: make device_property functions take const device *
driver core: update comments in device_rename()
driver core: Don't require dynamic_debug for initcall_debug probe timing
firmware_loader: rework crypto dependencies
firmware_loader: Strip off \n from customized path
zram: fix up permission for the hot_add sysfs file
cacheinfo: Add use_arch[|_cache]_info field/function
arch_topology: Remove early cacheinfo error message if -ENOENT
cacheinfo: Check cache properties are present in DT
cacheinfo: Check sib_leaf in cache_leaves_are_shared()
cacheinfo: Allow early level detection when DT/ACPI info is missing/broken
cacheinfo: Add arm64 early level initializer implementation
cacheinfo: Add arch specific early level initializer
tty: make tty_class a static const structure
driver core: class: remove struct class_interface * from callbacks
driver core: class: mark the struct class in struct class_interface constant
driver core: class: make class_register() take a const *
driver core: class: mark class_release() as taking a const *
driver core: remove incorrect comment for device_create*
MIPS: vpe-cmp: remove module owner pointer from struct class usage.
...
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returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The module pointer in class_create() never actually did anything, and it
shouldn't have been requred to be set as a parameter even if it did
something. So just remove it and fix up all callers of the function in
the kernel tree at the same time.
Cc: "Rafael J. Wysocki" <[email protected]>
Acked-by: Benjamin Tissoires <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There is no need to manually set the owner of a struct class, as the
registering function does it automatically, so remove all of the
explicit settings from various drivers that did so as it is unneeded.
This allows us to remove this pointer entirely from this structure going
forward.
Cc: "Rafael J. Wysocki" <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The show() methods should only use sysfs_emit() when formatting values
to be returned to the user space.
Ref: Documentation/filesystems/sysfs.rst
Issue identified by coccicheck.
Signed-off-by: Deepak R Varma <[email protected]>
Link: https://lore.kernel.org/r/Y2uEIzebbM/Fs5Jz@qemulion
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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If device_register() fails, device_unregister() should not be called
because it will free some resources that are not allocated.
put_device() should be used instead.
Fixes: 308ee87a2f1e ("staging: fieldbus: anybus-s: support HMS Anybus-S bus")
Signed-off-by: Christophe JAILLET <[email protected]>
Link: https://lore.kernel.org/r/5401a519608d6e1a4e7435c20f4f20b0c5c36c23.1650610082.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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host.c file comment produce warning with checkpatch as below:
WARNING: Possible repeated word: 'interrupt'
Reframe the comment into bullet points or steps avoid this warning.
Signed-off-by: Ajith P V <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The driver core ignores the return value of this callback because there
is only little it can do when a device disappears.
This is the final bit of a long lasting cleanup quest where several
buses were converted to also return void from their remove callback.
Additionally some resource leaks were fixed that were caused by drivers
returning an error code in the expectation that the driver won't go
away.
With struct bus_type::remove returning void it's prevented that newly
implemented buses return an ignored error code and so don't anticipate
wrong expectations for driver authors.
Reviewed-by: Tom Rix <[email protected]> (For fpga)
Reviewed-by: Mathieu Poirier <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]> (For drivers/s390 and drivers/vfio)
Acked-by: Russell King (Oracle) <[email protected]> (For ARM, Amba and related parts)
Acked-by: Mark Brown <[email protected]>
Acked-by: Chen-Yu Tsai <[email protected]> (for sunxi-rsb)
Acked-by: Pali Rohár <[email protected]>
Acked-by: Mauro Carvalho Chehab <[email protected]> (for media)
Acked-by: Hans de Goede <[email protected]> (For drivers/platform)
Acked-by: Alexandre Belloni <[email protected]>
Acked-By: Vinod Koul <[email protected]>
Acked-by: Juergen Gross <[email protected]> (For xen)
Acked-by: Lee Jones <[email protected]> (For mfd)
Acked-by: Johannes Thumshirn <[email protected]> (For mcb)
Acked-by: Johan Hovold <[email protected]>
Acked-by: Srinivas Kandagatla <[email protected]> (For slimbus)
Acked-by: Kirti Wankhede <[email protected]> (For vfio)
Acked-by: Maximilian Luz <[email protected]>
Acked-by: Heikki Krogerus <[email protected]> (For ulpi and typec)
Acked-by: Samuel Iglesias Gonsálvez <[email protected]> (For ipack)
Acked-by: Geoff Levand <[email protected]> (For ps3)
Acked-by: Yehezkel Bernat <[email protected]> (For thunderbolt)
Acked-by: Alexander Shishkin <[email protected]> (For intel_th)
Acked-by: Dominik Brodowski <[email protected]> (For pcmcia)
Acked-by: Rafael J. Wysocki <[email protected]> (For ACPI)
Acked-by: Bjorn Andersson <[email protected]> (rpmsg and apr)
Acked-by: Srinivas Pandruvada <[email protected]> (For intel-ish-hid)
Acked-by: Dan Williams <[email protected]> (For CXL, DAX, and NVDIMM)
Acked-by: William Breathitt Gray <[email protected]> (For isa)
Acked-by: Stefan Richter <[email protected]> (For firewire)
Acked-by: Benjamin Tissoires <[email protected]> (For hid)
Acked-by: Thorsten Scherer <[email protected]> (For siox)
Acked-by: Sven Van Asbroeck <[email protected]> (For anybuss)
Acked-by: Ulf Hansson <[email protected]> (For MMC)
Acked-by: Wolfram Sang <[email protected]> # for I2C
Acked-by: Sudeep Holla <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Acked-by: Dmitry Torokhov <[email protected]>
Acked-by: Finn Thain <[email protected]>
Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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A driver without .probe() callback could never bind to a device because
anybus_bus_probe() returned an error for such a driver. So refuse to
register such a useless driver.
Reviewed-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The driver core ignores the return value of struct bus_type::remove()
because there is only little that can be done. To simplify the quest to
make this function return void, let struct
anybuss_client_driver::remove() return void, too. All users already
unconditionally return 0, this commit makes it obvious that returning an
error code is a bad idea.
Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Use devm_add_action_or_reset() instead of devres_alloc() and
devres_add(), which works the same. This will simplify the
code. There is no functional changes.
Signed-off-by: Tian Tao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Constify two static structs which are never modified, to allow the
compiler to put them in read-only memory.
The only usage of controller_attribute_group is to put its address in an
array of pointers to const struct attribute_group, and the only usage of
can_power_ops is to assign its address to the 'ops' field in the
regulator_desc struct, which is a pointer to const struct regulator_ops.
Reviewed-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Rikard Falkeborn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Use kobj_to_dev() instead of container_of()
Signed-off-by: Ding Xiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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We need the staging fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Convert to %pM instead of using custom code.
Signed-off-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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In current code, controller_probe() misses to call ida_simple_remove()
in an error path. Jump to correct label to fix it.
Fixes: 17614978ed34 ("staging: fieldbus: anybus-s: support the Arcx anybus controller")
Reviewed-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Jing Xiangfeng <[email protected]>
Cc: stable <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Use devm_platform_ioremap_resource helper which wraps
platform_get_resource() and devm_ioremap_resource() together. Issue
found by coccicheck.
Signed-off-by: Cristiane Naves <[email protected]>
Link: https://lore.kernel.org/r/20191026235214.GA11702@cristiane-Inspiron-5420
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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anybus-s cards use the "offline mode" property to determine if
process memory should be clear, set, or frozen when the card
is offline.
Move this property to the fieldbus core, so that it can become
part of the future fieldbus config interface.
Signed-off-by: Sven Van Asbroeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Remove two unused static const strings - a leftover from
a previous stage. Interestingly, neither gcc nor sparse
warned about their presence.
Signed-off-by: Sven Van Asbroeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The devicetree bindings for anybus-controller were mistakenly
merged into the main Linux tree. Its driver resides in
staging/, so the bindings belong in staging/ too.
Cc: Greg Kroah-Hartman <[email protected]>
Fixes: 20a980e957bf ("dt-bindings: anybus-controller: document devicetree binding")
Signed-off-by: Sven Van Asbroeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO driver updates from Greg KH:
"Here is the big Staging and IIO driver update for 5.3-rc1.
Lots of new IIO drivers are in here, along with loads of tiny staging
driver cleanups and fixes. Overall we almost break even with the same
lines added as removed.
Full details are in the shortlog, they are too large to list here.
All of these changes have been in linux-next for a while with no
reported issues"
* tag 'staging-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (608 commits)
staging: kpc2000: simplify comparison to NULL in fileops.c
staging: kpc2000: simplify comparison to NULL in dma.c
staging: kpc2000: simplify comparison to NULL in kpc2000_spi.c
staging: rtl8723bs: hal: remove redundant assignment to packetType
staging: rtl8723bs: Change return type of hal_btcoex_IsBtDisabled()
staging: rtl8723bs: Remove rtw_btcoex_DisplayBtCoexInfo()
staging: rtl8723bs: Remove function rtw_btcoex_GetDBG()
staging: rtl8723bs: Remove function rtw_btcoex_SetDBG()
staging: rtl8723bs: Remove rtw_btcoex_IsBTCoexCtrlAMPDUSize()
staging: rtl8723bs: Remove rtw_btcoex_BtInfoNotify()
staging: rtl8723bs: Remove rtw_btcoex_ScanNotify()
staging: rtl8723bs: Remove rtw_btcoex_SetSingleAntPath()
staging: rtl8723bs: Remove rtw_btcoex_SetPGAntNum()
staging: rtl8192e: remove redundant initialization of rtstatus
staging: rtl8723bs: Remove rtw_btcoex_GetRaMask()
staging: rtl8723bs: Remove rtw_btcoex_SetChipType()
staging: rtl8723bs: Remove rtw_btcoex_ConnectNotify()
staging: rtl8723bs: Remove rtw_btcoex_SetBTCoexist()
staging: rtl8723bs: Remove rtw_btcoex_IsBtDisabled()
staging: rtl8723bs: Remove rtw_btcoex_IsBtControlLps()
...
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We need to pick up post-rc1 changes to various document files so they don't
get lost in Mauro's massive RST conversion push.
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Fix gcc build error while CONFIG_REGMAP_MMIO is not set
drivers/staging/fieldbus/anybuss/arcx-anybus.o: In function `controller_probe':
arcx-anybus.c: undefined reference to `__devm_regmap_init_mmio_clk'
Select REGMAP_MMIO to fix it.
Reported-by: Hulk Robot <[email protected]>
Fixes: 2411a336c8ce ("staging: fieldbus: arcx-anybus: change custom -> mmio regmap")
Signed-off-by: YueHaibing <[email protected]>
Reviewed-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Mostly due to x86 and acpi conversion, several documentation
links are still pointing to the old file. Fix them.
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Reviewed-by: Wolfram Sang <[email protected]>
Reviewed-by: Sven Van Asbroeck <[email protected]>
Reviewed-by: Bhupesh Sharma <[email protected]>
Acked-by: Mark Brown <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>
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We need the staging fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The arcx-anybus's registers are accessed via a memory-mapped
IO region. A regmap associated with this region is created
using custom reg_read() / reg_write() callbacks.
However, an abstraction which creates a memory-mapped IO
region backed regmap already exists: devm_regmap_init_mmio().
Replace the custom regmap with the existing kernel abstraction.
As a pleasant side-effect, sparse warnings now disappear.
Signed-off-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These changes solve a warning realated to an incorrect type inilizer in the function
fieldbus_poll.
Signed-off-by: Oscar Gomez Fuente <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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wait_for_completion_timeout() returns unsigned long (0 on timeout or
remaining jiffies) not int. Assigning this return value to int may
theoretically overflow (though not in this case where TIMEOUT is
only HZ*2).
Fix this inconsistency by wrapping the wait_for_completion_timeout
into the if().
Signed-off-by: Nicholas Mc Guire <[email protected]>
Reviewed-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Rename the anybus-s bus id from fieldbus_type to anybus_id, to
avoid confusion with an identically named variable in the
fieldbus_dev framework.
Although this value is called fieldbus_type in the anybus-s docs,
it acts like a bus id, so the name change is appropriate.
Signed-off-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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"Normal" bus structures such as USB or PCI keep device bus ids
in bus endinanness, and driver bus ids in host endianness.
Endianness conversion happens each time bus_match() is called.
Modify anybus-s to conform to this pattern. As a pleasant side-
effect, sparse warnings will now disappear.
This was suggested by Al Viro.
Link: https://lkml.org/lkml/2019/4/30/834
Signed-off-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Add a TODO file which describes what needs to be done in order to
get the fieldbus_dev subsystem out of staging.
Signed-off-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The Anybus-S PROFINET IRT communication module provides instant integration
to any Ethernet based LAN via SMTP, FTP, HTTP as well as PROFINET and
Modbus-TCP. Additional protocols can be implemented on top of TCP/IP
or UDP using the transparent socket interface.
Official documentation:
https://www.anybus.com/docs/librariesprovider7/default-document-library
/manuals-design-guides/hms-hmsi-168-52.pdf
This implementation is an Anybus-S client driver, designed to be
instantiated by the Anybus-S bus driver when it discovers the Profinet
card.
If loaded successfully, the driver registers itself as a fieldbus_dev,
and userspace can access it through the fieldbus_dev interface.
Signed-off-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Add a driver for the Arcx anybus controller.
This device implements two Anybus-S hosts (buses),
and connects to the SoC via a parallel memory bus.
There is also a CAN power readout, unrelated to the Anybus,
modelled as a regulator.
Signed-off-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The Anybus-S/Anybus-M is a series of interchangeable fieldbus communication
modules featuring on board memory and processing power. All software and
hardware functionality required to communicate on the fieldbus is
incorporated in the module itself, allowing the application to focus on
other tasks.
Typical applications are frequency inverters, HMI and visualization
devices, instruments, scales, robotics, PLC’s and intelligent measuring
devices.
Official documentation:
https://www.anybus.com/docs/librariesprovider7/default-document-library/
manuals-design-guides/hms-hmsi-27-275.pdf
Signed-off-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Fieldbus device (client) adapters allow data exchange with a PLC aka.
"Fieldbus Controller" over a fieldbus (Profinet, FLNet, etc.)
They are typically used when a Linux device wants to expose itself
as an actuator, motor, console light, switch, etc. over the fieldbus.
This framework is designed to provide a generic interface to Fieldbus
Devices from both the Linux Kernel and the userspace.
Signed-off-by: Sven Van Asbroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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