| Message ID | 1348219298-23273-1-git-send-email-federico.vaga@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri September 21 2012 11:21:35 Federico Vaga wrote: > This patch adds support for prepare/finish callbacks in VB2 allocators. > These callback are used for buffer flushing. > > Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> > Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Acked-by: Federico Vaga <federico.vaga@gmail.com> > --- > drivers/media/v4l2-core/videobuf2-core.c | 11 +++++++++++ > include/media/videobuf2-core.h | 7 +++++++ > 2 file modificati, 18 inserzioni(+) > > diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c > index 4da3df6..079fa79 100644 > --- a/drivers/media/v4l2-core/videobuf2-core.c > +++ b/drivers/media/v4l2-core/videobuf2-core.c > @@ -790,6 +790,7 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) > { > struct vb2_queue *q = vb->vb2_queue; > unsigned long flags; > + unsigned int plane; > > if (vb->state != VB2_BUF_STATE_ACTIVE) > return; > @@ -800,6 +801,10 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) > dprintk(4, "Done processing on buffer %d, state: %d\n", > vb->v4l2_buf.index, vb->state); > > + /* sync buffers */ > + for (plane = 0; plane < vb->num_planes; ++plane) > + call_memop(q, finish, vb->planes[plane].mem_priv); > + > /* Add the buffer to the done buffers list */ > spin_lock_irqsave(&q->done_lock, flags); > vb->state = state; > @@ -975,9 +980,15 @@ static int __qbuf_mmap(struct vb2_buffer *vb, const struct v4l2_buffer *b) > static void __enqueue_in_driver(struct vb2_buffer *vb) > { > struct vb2_queue *q = vb->vb2_queue; > + unsigned int plane; > > vb->state = VB2_BUF_STATE_ACTIVE; > atomic_inc(&q->queued_count); > + > + /* sync buffers */ > + for (plane = 0; plane < vb->num_planes; ++plane) > + call_memop(q, prepare, vb->planes[plane].mem_priv); > + > q->ops->buf_queue(vb); > } > > diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h > index 8dd9b6c..f374f99 100644 > --- a/include/media/videobuf2-core.h > +++ b/include/media/videobuf2-core.h > @@ -41,6 +41,10 @@ struct vb2_fileio_data; > * argument to other ops in this structure > * @put_userptr: inform the allocator that a USERPTR buffer will no longer > * be used > + * @prepare: called everytime the buffer is passed from userspace to the nitpick: everytime -> every time > + * driver, usefull for cache synchronisation, optional > + * @finish: called everytime the buffer is passed back from the driver ditto. > + * to the userspace, also optional > * @vaddr: return a kernel virtual address to a given memory buffer > * associated with the passed private structure or NULL if no > * such mapping exists > @@ -65,6 +69,9 @@ struct vb2_mem_ops { > unsigned long size, int write); > void (*put_userptr)(void *buf_priv); > > + void (*prepare)(void *buf_priv); > + void (*finish)(void *buf_priv); > + > void *(*vaddr)(void *buf_priv); > void *(*cookie)(void *buf_priv); > > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
> > > > + * @prepare: called everytime the buffer is passed from userspace > > to the > nitpick: everytime -> every time > > > + * driver, usefull for cache synchronisation, optional > > + * @finish: called everytime the buffer is passed back from the > > driver > ditto. > This patch come from here: https://patchwork.kernel.org/patch/1323411/ I send it with my patch set because my work require this patch but it is not in the next tree. I think it is convenient to fix the original patch, probably it will be integrated in the kernel before this one; so this patch will be useless. Anyway, I will apply this comment fix.
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 4da3df6..079fa79 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -790,6 +790,7 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) { struct vb2_queue *q = vb->vb2_queue; unsigned long flags; + unsigned int plane; if (vb->state != VB2_BUF_STATE_ACTIVE) return; @@ -800,6 +801,10 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) dprintk(4, "Done processing on buffer %d, state: %d\n", vb->v4l2_buf.index, vb->state); + /* sync buffers */ + for (plane = 0; plane < vb->num_planes; ++plane) + call_memop(q, finish, vb->planes[plane].mem_priv); + /* Add the buffer to the done buffers list */ spin_lock_irqsave(&q->done_lock, flags); vb->state = state; @@ -975,9 +980,15 @@ static int __qbuf_mmap(struct vb2_buffer *vb, const struct v4l2_buffer *b) static void __enqueue_in_driver(struct vb2_buffer *vb) { struct vb2_queue *q = vb->vb2_queue; + unsigned int plane; vb->state = VB2_BUF_STATE_ACTIVE; atomic_inc(&q->queued_count); + + /* sync buffers */ + for (plane = 0; plane < vb->num_planes; ++plane) + call_memop(q, prepare, vb->planes[plane].mem_priv); + q->ops->buf_queue(vb); } diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 8dd9b6c..f374f99 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -41,6 +41,10 @@ struct vb2_fileio_data; * argument to other ops in this structure * @put_userptr: inform the allocator that a USERPTR buffer will no longer * be used + * @prepare: called everytime the buffer is passed from userspace to the + * driver, usefull for cache synchronisation, optional + * @finish: called everytime the buffer is passed back from the driver + * to the userspace, also optional * @vaddr: return a kernel virtual address to a given memory buffer * associated with the passed private structure or NULL if no * such mapping exists @@ -65,6 +69,9 @@ struct vb2_mem_ops { unsigned long size, int write); void (*put_userptr)(void *buf_priv); + void (*prepare)(void *buf_priv); + void (*finish)(void *buf_priv); + void *(*vaddr)(void *buf_priv); void *(*cookie)(void *buf_priv);