diff options
| author | Greg Kroah-Hartman <greg@kroah.com> | 2014-12-21 14:10:26 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <greg@kroah.com> | 2014-12-23 15:30:00 -0800 |
| commit | df671553cbe286e885e61b61f8c126e034854a89 (patch) | |
| tree | 848b1069b3bece302dd1803174f019d017999811 /drivers/staging/greybus/interface.h | |
| parent | 4901175f282792450f899b86b2d5d0048d6c11b2 (diff) | |
greybus: add module support
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: Greg Kroah-Hartman <greg@kroah.com>
Diffstat (limited to 'drivers/staging/greybus/interface.h')
| -rw-r--r-- | drivers/staging/greybus/interface.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/staging/greybus/interface.h b/drivers/staging/greybus/interface.h index 5dd2c20dc286..fd5001e908bf 100644 --- a/drivers/staging/greybus/interface.h +++ b/drivers/staging/greybus/interface.h @@ -16,7 +16,7 @@ struct gb_interface { struct list_head bundles; struct list_head links; /* greybus_host_device->interfaces */ - u8 module_id; /* Physical location within the Endo */ + u8 interface_id; /* Physical location within the Endo */ /* Information taken from the manifest module descriptor */ u16 vendor; @@ -25,6 +25,7 @@ struct gb_interface { char *product_string; u64 unique_id; + struct gb_module *module; struct greybus_host_device *hd; }; #define to_gb_interface(d) container_of(d, struct gb_interface, dev) |