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mei: bus: add and call callback on notify event

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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 <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Usyskin
2015-07-26 09:54:23 +03:00
committed by Greg Kroah-Hartman
parent 237092bf03
commit bb2ef9c39d
5 changed files with 55 additions and 5 deletions
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4
include/linux/mei_cl_bus.h
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@@ -28,6 +28,7 @@ typedef void (*mei_cl_event_cb_t)(struct mei_cl_device *device,
* @event_cb: Drivers register this callback to get asynchronous ME
* events (e.g. Rx buffer pending) notifications.
* @event_context: event callback run context
* @events_mask: Events bit mask requested by driver.
* @events: Events bitmask sent to the driver.
*
* @do_match: wheather device can be matched with a driver
@@ -46,6 +47,7 @@ struct mei_cl_device {
struct work_struct event_work;
mei_cl_event_cb_t event_cb;
void *event_context;
unsigned long events_mask;
unsigned long events;
unsigned int do_match:1;
@@ -76,10 +78,12 @@ ssize_t mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length);
ssize_t mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length);
int mei_cl_register_event_cb(struct mei_cl_device *device,
unsigned long event_mask,
mei_cl_event_cb_t read_cb, void *context);
#define MEI_CL_EVENT_RX 0
#define MEI_CL_EVENT_TX 1
#define MEI_CL_EVENT_NOTIF 2
void *mei_cl_get_drvdata(const struct mei_cl_device *device);
void mei_cl_set_drvdata(struct mei_cl_device *device, void *data);