Currently, the connection between the host and a module
can only be created after the module has been detected or
during the interface create. For some controller, we don't
have the choice because they only have a stream that need
to open before any other operation.
But some controller (e.g. TPC/IP) can use more than one stream.
Add connection_create() and connection_destroy() callbacks to
let that kind of controller create more than one connection.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

The event is mainly used for module detection.
The controller create a thread to run the loop and generate
the hotplug and hot unpulg events.
But an event loop may prevent the application to exit,
because it use methods that prevent thread to be cancelled.
Add a new callback that will be called before to cancel the
thread to put the event loop in a cancellable state.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

Explain what is GBridge and,
speak a litle about the architecture.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

The bluetooth controller only support one HCI controller.
It continuously scan devices and automatically add any device
with GREYBUS in its name.
Currently, the controller doesn't support hot remove.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

Add the controller HAL in order to add support of Greybus
to different type of device such as bluetooth or Wi-Fi.
SVC and Greybus (through Netlink) use interface and cport,
and the controller HAL will convert it in some way to be
compatible with bluetooth, Wi-Fi, etc.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

The TAILQ_FOREACH_SAFE () macro doesn't seems
to be always present.
Define it if it is not already defined.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

Add a limited implementation of SVC protocol.
Most of the code has been generated and is obviously incomplete.
But it's enough to register the SVC and respond to ping.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

Add the method pr_dump to dump greybus operations.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

Netlink is used to communicate with the greybus kernel.
Add a preliminary support of netlink.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

This application connects to greybus netlink host device.
The main is goal is to give a way to resgister
a host device driver in user space.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>