| Age | Commit message (Collapse) | Author |
|---|
|
The greybus host device id can only be read by parsing the uevent if one
wants to identify a specific host device 'or' bus. This is 'lsgb' uses
today.
This change adds a bus_id attribute so libraries can identify multiple
host devices 'or' bus if they exist.
Testing Done:
Tested on Arche,
'cat /sys/bus/greybus/devices/greysbus1/bus_id'
Signed-off-by: Sandeep Patil <sspatil@google.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Add Greybus module abstraction that will be used to implement controlled
module removal (eject) and represent module geometry.
Greybus module devices correspond to physical modules and have one or
more interfaces. Modules have an id that is identical to the id of their
primary interface, which in turn is the interface with lowest numbered
id. The module name is constructed from the bus and module id:
<bus_id>-<module_id>
Interfaces, bundles, and control devices are consequently renamed as
<bus_id>-<module_id>.<interface_id>
<bus_id>-<module_id>.<interface_id>.<bundle_id>
<bus_id>-<module_id>.<interface_id>.ctrl
As before, interface ids (and therefore in a sense now also module ids)
correspond to physical interface positions on the frame.
Modules have the following attributes:
module_id
num_interfaces
where module_id is the id of the module and num_interface the number of
interfaces the module has.
Note that until SVC module-size detection has been implemented, all
interfaces are considered to be part of 1x2 modules. Specifically, the
two interfaces of a 2x2 module will be presented as two 1x2 modules for
now.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Move helper to remove all interfaces of a host-device to the svc code
and call it when removing the svc device as this needs to be coordinated
with flushing the SVC work queue.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Jeffrey Carlyle <jcarlyle@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Use dev_err and dev_warn where appropriate and remove now unused pr_fmt
defines.
Testing Done:
Tested on DB3.5 with the generic bridge firmware on APB2.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Make sure to tear down the svc and flush any on-going hotplug processing
before removing the remaining interfaces.
This fixes crashes due to host-device removal racing with svc
hotplug/unplug processing (e.g. at "UniPro restart").
Testing Done:
Verified that this fixes crashes reproducible on SDB when unloading the
host-device driver module while generating hotplug/unplug events.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Provide a new function, gb_hd_output() to send data to the apbridge.
This is useful for the camera and audio drivers that need to do this
type of messaging.
The camera driver is converted to use this new function, the audio
driver can use it when it gets merged later.
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Tested-by: Mark Greer <mgreer@animalcreek.com>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
|
|
Create svc device along with host-device and move the svc-connection to
the svc structure.
The svc connection is enabled when registering the host device, but as
the SVC protocol is currently driven by the SVC, we need to defer
registration of the svc device to the connection request handler.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Create the svc-connection as part of the host device, and destroy it in
the host-device destructor.
The svc-connection is enabled when registering the host device, and
disabled when the host device is deregistered.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Initialise the struct device last when creating the host device.
After device_initialize(), or rather dev_set_name(), we must use
put_device to release the host device. Initialising last will allow for
a simpler release callback.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Separate connection creation from enabling.
This will ultimately allow connection structures to be created while
parsing manifests, but the connections to not be enabled until a driver
is bound.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Remove the now unused endo and module code.
Note that the never-implemented serial and version attributes of the
endo can be implemented as svc attributes if needed.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Create the svc connection when registering the host-device and
remove the current svc connection hacks that "upgraded" the svc
connection once the endo id and ap interface id was known.
Note that the old implementation was partly based on a misunderstanding
as it was the remote interface id, rather than the local AP interface id,
that used to define a connection (but we also needed the endo_id).
The remote interface is no longer needed as static connections, such as
the svc connection, are now simply defined by the host-device and host
cport id.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Make the host device a proper device in the kernel device model.
Host devices will be our new greybus-bus root devices.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Fix off-by-one error when checking the number of cports a host-device
supports.
The CPORT_ID_MAX is the largest valid cport id so the maximum number of
cports a host-device can use is CPORT_ID_MAX + 1.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Fix host-device life time issues by separating host-device allocation
from registration.
This is needed both to make sure that all host-device resources are
available before registering the device and to prevent such resources
from being deallocated while the device is still in use during device
removal.
This specifically fixes the following warnings during es1 and es2
disconnect:
usb 1-1.1: No free CPort OUT urbs, having to dynamically allocate one!
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Rename the exported functions using the common gb_-prefix.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Rename host-driver structure to gb_hd_driver to more clearly separate it
from the host-device structure.
Also remove an outdated description of the struct.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Rename host-device structure gb_host_device to match our other
structures.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
|
Move everything host-device related to hd.c and hd.h.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
