Make vb2 core aware of requests. Drivers can specify whether a given
queue accepts requests or not.
Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxxxx>
---
drivers/media/common/videobuf2/videobuf2-core.c | 3 +++
include/media/videobuf2-core.h | 4 ++++
2 files changed, 7 insertions(+)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index debe35fc66b4..355fe7dc99d7 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -930,6 +930,9 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state)
vb->state = state;
}
atomic_dec(&q->owned_by_drv_count);
+
+ vb->request = NULL;
+
spin_unlock_irqrestore(&q->done_lock, flags);
trace_vb2_buf_done(q, vb);
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 5b6c541e4e1b..6e9e814886e7 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -238,6 +238,7 @@ struct vb2_queue;
* @num_planes: number of planes in the buffer
* on an internal driver queue.
* @timestamp: frame timestamp in ns.
+ * @request: request the buffer belongs to, if any.
*/
struct vb2_buffer {
struct vb2_queue *vb2_queue;
@@ -246,6 +247,7 @@ struct vb2_buffer {
unsigned int memory;
unsigned int num_planes;
u64 timestamp;
+ struct media_request *request;
/* private: internal use only
*
@@ -446,6 +448,7 @@ struct vb2_buf_ops {
* @quirk_poll_must_check_waiting_for_buffers: Return %EPOLLERR at poll when QBUF
* has not been called. This is a vb1 idiom that has been adopted
* also by vb2.
+ * @allow_requests: whether requests are supported on this queue.
* @lock: pointer to a mutex that protects the &struct vb2_queue. The
* driver can set this to a mutex to let the v4l2 core serialize
* the queuing ioctls. If the driver wants to handle locking
@@ -513,6 +516,7 @@ struct vb2_queue {
unsigned fileio_write_immediately:1;
unsigned allow_zero_bytesused:1;
unsigned quirk_poll_must_check_waiting_for_buffers:1;
+ unsigned allow_requests:1;
struct mutex *lock;
void *owner;
--
2.16.1.291.g4437f3f132-goog
