kernel/linux.git/drivers/misc/mei/bus.c, branch linux-4.3.y

mei: bus: add and call callback on notify event

2015-08-04T00:30:00+00:00

Enable drivers on mei client bus to subscribe to asynchronous event notifications. Introduce events_mask to the existing callback infrastructure so it is possible to handle both RX and event notification. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: link client devices instead of host clients

2015-08-04T00:24:48+00:00

MEI bus was designed around nfc and was hard to extend. Instead of the hard coded way of adding the devices on the mei bus we scan the whole me client list and create a device for each eligible me client (mei_cl_bus_rescan); currently we support only clients with single connection and fixed address clients. NFC radio name detection is run as a fixup routine The patch replaces handling the device list based on struct me_cl to device list based on me_cl_devices. The creating a connection is pushed from the device creation time to device enablement. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: simplify how we build nfc bus name

2015-08-04T00:24:16+00:00

Remove the dependency on struct ndev from the nfc device name creation function so it is possible to use it in a fixup routine Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: enable running fixup routines before device registration

2015-08-04T00:24:16+00:00

Split the device registration into allocation and device struct initialization, device setup, and the final device registration. This why it is possible to run fixups and quirks during the setup stage on an initialized device. Each fixup routine effects do_match flag. If the flag is set to false at the end the device won't be registered on the bus. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: add me client device list infrastructure

2015-08-04T00:21:59+00:00

Instead of holding the list of host clients (me_cl) we want to keep the list me client devices (mei_cl_device) This way we can create host to me client connection only when needed. Add list head to mei_cl_device and cl_bus_lock Add bus_added flag to the me client (mei_me_client) to track if the appropriate mei_cl_device was already created and is_added flag to mei_cl_device to track if it was already added to the device list across the bus rescans Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: add reference to bus device in struct mei_cl_client

2015-08-04T00:21:59+00:00

Add reference to the bus device (mei_device) for easier access. To ensures that referencing cldev->bus is valid during cldev life time we increase the bus ref counter on a client device creation and drop it on the device release. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: revamp probe and remove functions

2015-08-04T00:21:58+00:00

Instead of generating device id on the fly during probing we find the matching id entry on the device id table. Get bus the module reference counter so it cannot be unloaded after the driver has bounded to the client device Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: revamp device matching

2015-08-04T00:21:58+00:00

mei_cl_device_match now calls mei_cl_device_find that returns the matching device id in the device id table. We will utilize the mei_cl_device_find during probing to locate the matching entry. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: report if event registration failed

2015-08-04T00:21:58+00:00

If event registeration has failed, the caller should know about it. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: don't enable events implicitly in device enable

2015-08-04T00:20:26+00:00

Do not enable events implicitly in mei_cl_enable_device, it should be done explicitly using mei_cl_register_event_cb so the events are enabled only when needed. The NFC drivers has been already using it that way so no need for further changes just remove the code from mei_cl_enable_device. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman