- 24 Dec, 2014 5 commits
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Greg Kroah-Hartman authored
This splits the i2c-gb protocol into a stand-alone kernel module. It's not going to stay in this fashion for long, this was done to test the "can a protcol be loaded later" logic. Future refactoring is going to move the gpbridge protocols to a separate kernel module, where this protocol is going to live. But for now, split it out, it is good to test with, and shows a bug in gbsim at the moment. Reviewed-by:
Alex Elder <elder@linaro.org> Signed-off-by:
Greg Kroah-Hartman <greg@kroah.com>
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Greg Kroah-Hartman authored
When adding a new protocol to the system, walk all bundles and try to hook up any connections that do not have a protocol already. This sets the stage to allow for protocols to be loaded at any time, not just before the device is seen in the system. Reviewed-by:
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Greg Kroah-Hartman authored
Protocol handlers need some greybus symbols, so export them so that they can be built outside of the greybus core. Reviewed-by:
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Greg Kroah-Hartman authored
We will want to return this value as a return value for module_init() and bool does not play well with module_init(). So make it a "real" error value and return int and fix up all callers of the function. Reviewed-by:
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Greg Kroah-Hartman authored
The list was global and had no locking. It's not like we were ever parsing more than one manifest at the same time right now, but we might in the future. And we really want this to be local to the interface itself, for future work redoing how to bind protocols to bundles, so move the list to the interface structure. Reviewed-by:
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- 23 Dec, 2014 1 commit
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Greg Kroah-Hartman authored
Modules in the greybus system sit above the interface, so insert them early in the sysfs tree. We dynamically create them when we have an interface that references a module, as we don't get a "module create" message directly. They also dynamically go away when the last interface associated with a module is removed. Naming scheme for modules/interfaces/bundles/connections is bumped up by one ':', and now looks like the following: /sys/bus/greybus $ tree . ├── devices │ ├── 7 -> ../../../devices/pci0000:00/0000:00:14.0/usb1/1-1/7 │ ├── 7:7 -> ../../../devices/pci0000:00/0000:00:14.0/usb1/1-1/7/7:7 │ ├── 7:7:0 -> ../../../devices/pci0000:00/0000:00:14.0/usb1/1-1/7/7:7/7:7:0 │ └── 7:7:0:1 -> ../../../devices/pci0000:00/0000:00:14.0/usb1/1-1/7/7:7/7:7:0/7:7:0:1 ├── drivers ├── drivers_autoprobe ├── drivers_probe └── uevent 6 directories, 3 files /sys/bus/greybus $ grep . devices/*/uevent devices/7/uevent:DEVTYPE=greybus_module devices/7:7/uevent:DEVTYPE=greybus_interface devices/7:7:0/uevent:DEVTYPE=greybus_bundle devices/7:7:0:1/uevent:DEVTYPE=greybus_connection We still have some "confusion" about interface ids and module ids, which will be cleaned up later when the svc control protocol changes die down, right now we just name a module after the interface as we don't have any modules that have multiple interfaces in our systems. This has been tested with gbsim. Signed-off-by:
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- 19 Dec, 2014 9 commits
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Greg Kroah-Hartman authored
It's a local interface lock, not a modules lock, so rename it. Reviewed-by:
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Greg Kroah-Hartman authored
This is really a list of interfaces, not modules, so rename it so that we don't get confused when we really do add modules to the whole system later on. Reviewed-by:
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Greg Kroah-Hartman authored
rename gb_add_module -> gb_add_interface rename gb_remove_modules -> gb_remove_interfaces rename gb_remove_module -> gb_remove_interface And move the function prototypes to interface.h, where they belong. Reviewed-by:
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Greg Kroah-Hartman authored
Align up the BIT() #defines and properly comment the include block define. Reviewed-by:
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Greg Kroah-Hartman authored
MAX_CPORTS_PER_MODULE and MAX_STRINGS_PER_MODULE are not used anywhere anymore, so remove them lest someone thing we have limits. Signed-off-by:
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Greg Kroah-Hartman authored
This moves the id structure name to not have "block" in it, as that doesn't make sense anymore with the renaming of the gb_interface structure. Reviewed-by:
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Greg Kroah-Hartman authored
Rename struct gb_interface_block to struct gb_interface Lots of renaming, and variable renames as well (gb_ib->intf), but all should be sane with regards to the new naming scheme we are using. Reviewed-by:
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Greg Kroah-Hartman authored
Interface_block is being renamed to interface, so move the file first. Reviewed-by:
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Greg Kroah-Hartman authored
Alex pointed out one rename I missed previously, this fixes up the interface_block list of bundles name. Reviewed-by:
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- 13 Dec, 2014 3 commits
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Greg Kroah-Hartman authored
Rename struct gb_interface to struct gb_bundle It's a lot of renaming, some structures got renamed and also some fields, but the goal was to rename things to make sense with the new naming of how the system is put together in the 'driver model' view. Reviewed-by:
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Greg Kroah-Hartman authored
-EPROTO happens when devices are starting to go away in a system, or there is something wrong on the USB connection. Either way, it's safe to resubmit the urb for this error, don't complain to userspace about this, as the user will see this for every device removed, which looks scary, but means nothing. Signed-off-by:
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Greg Kroah-Hartman authored
We are renameing the "interface" term to "bundle" so rename the files before we start changing structure names to make it easier for people to see what really is happening in the changes. Signed-off-by:
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- 12 Dec, 2014 13 commits
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Alex Elder authored
I was asked to add a Linaro copyright to all Greybus source files that anyone at Linaro has modified. This patch does that. Signed-off-by:
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Greg Kroah-Hartman authored
Because of this, rename greybus_module_id to greybus_interface_block_id. We still need to add a way for a "class" driver to be bound to an interface, but for now, all we really need is the vendor/product pair as the GP Bridge interface block is going to be our main user. Reviewed-by:
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Greg Kroah-Hartman authored
Yes, an interface has a device id sysfs file, so we need to document it. Reviewed-by:
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Greg Kroah-Hartman authored
Document what the sysfs files are for connections, so that people have a chance to understand what they can be used for. Reviewed-by:
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Greg Kroah-Hartman authored
No need to keep these out in sysfs.c, move them into the interface_block.c file so that we can see them easier, and remove some variable definitions by taking advantage of the attribute group macro. Reviewed-by:
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Greg Kroah-Hartman authored
Documentation, what, really? Yes. Reviewed-by:
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Greg Kroah-Hartman authored
The sysfs files for an interface block should not have 'module' in them. This was a hold-over from when we thought we were going to have all attributes of a "module" in one directory. Remove the prefix as it's not needed, and is confusing considering modules can not have strings or any of these attributes. Reviewed-by:
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Greg Kroah-Hartman authored
Rename struct gb_module to struct gb_interface_block It's a complex rename, some functions got their name changed where needed, but primarily this change is focused on the structure and where it is used. Future changes will clean up the remaining usages of the term "module" in individual changes, this one spanned the whole subsystem so do it all at once. Reviewed-by:
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Greg Kroah-Hartman authored
"modules" in the driver model here, are really "interface blocks" as that is what they are physically tied to. So rename the files before we start changing the code to make it obvious what is going on. Reviewed-by:
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Greg Kroah-Hartman authored
We aren't using this anymore, so remove gb_tty from struct gb_module. Reviewed-by:
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Greg Kroah-Hartman authored
We removed the module version from the spec, so remove them from the code as well. It's still in the manifest as we need to sync with gbsim / firmware when we do that, which will happen sometime in the next weeks. Reviewed-by:
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Greg Kroah-Hartman authored
No need to specifically include the greybus module.h here, greybus.h already does so and we will be renaming it soon. Reviewed-by:
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Alex Elder authored
In talking with Perry today I learned that the CPort id expected to supplied over the HSIC interface to the APB is different from the way I understood it. My understanding was that the CPort id to supply always specified the CPort id on the other end of a connection. However, Perry says the mapping between local CPort id and remote CPort id (and device id) is done by the host UniPro interface. So whether sending or receiving data, the CPort id that the Greybus code should supply to the AP Bridge is the one representing the AP side of a connection. This patch fixes this. The receive side already used that CPort id; it's only the sending code that needed to be changed. Signed-off-by:
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- 10 Dec, 2014 2 commits
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Alex Elder authored
When probing for i2c devices, a read transfer operation can be used. In this case, it is expected that some devices will not be found, so ENODEV is an expected failure. Don't issue a warning if the return value is -ENODEV. Note: I anticipate we might have to be more precise in identifying this specific case, but for now this eliminates a bogus warning when probing i2c devices. Signed-off-by:
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Alex Elder authored
The i2c protocol needs a way to indicate an i2c device doesn't exist (which is not necessarily an error). Define GB_OP_NONEXISTENT to indicate this, and updating the status<->errno mapping functions accordingly. Signed-off-by:
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- 09 Dec, 2014 1 commit
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Greg Kroah-Hartman authored
The version field is going to go away, but after the demo, not before. Note that in the header file. Signed-off-by:
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- 08 Dec, 2014 1 commit
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Greg Kroah-Hartman authored
Signed-off-by:
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- 03 Dec, 2014 5 commits
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Alex Elder authored
I've gone back and forth on this, but now that I'm looking at asynchronous operations I know that the asynchronous callback will want to know what type of operation it is handling, and right now that's only available in the message header. So record an operation's type in the operation structure, and use it in a few spots where the header type was being used previously. Pass the type to gb_operation_create_incoming() so it can fill it in after the operation has been created. Clean up the crap comments above the definition of the operation structure. Signed-off-by:
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Alex Elder authored
Currently message->payload always points to the address immediately following the header in a message. If the payload length is 0, this is not a valid pointer. Change the code to assign a null pointer to the payload in this case. I have verified that no code dereferences the payload pointer unless the payload is known to have non-zero size. Signed-off-by:
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Alex Elder authored
An asynchronous operation will want to know how big the response message it receives is. Rather than require the sender to record that information, expose a new field "payload_size" available to the protocol code for this purpose. An operation message consists of a header and a payload. The size of the message can be derived from the size of the payload, so record only the payload size and not the size of the whole message. Reorder the fields in a message structure. Update the description of the message header structure. Signed-off-by:
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Alex Elder authored
This is in preparation for an upcoming patch, which makes the payload pointer be NULL when a message has zero bytes of payload. It ensures a null payload pointer never gets dereferenced. To do this we pass the response structure to gb_i2c_transfer_response() rather than just its data, and if it's null, returning immediately. Rearrange the logic in gb_i2c_transfer_operation() a bit. Signed-off-by:
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Alex Elder authored
The connection->private pointer should refer to a protocol-specific data structure. Change two protocol drivers (USB and vibrator) so they now set this. In addition, because the setup routine may need access to the data structure, the private pointer should be set early--as early as possible. Make the UART, i2c, and GPIO protocol drivers set the private pointer earlier. Signed-off-by:
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