On Mon Mar 9 15:01:54 2026 +0000, Ricardo Ribalda wrote:
> The UVC driver has two video streams, one for the frames and another one
> for the metadata. Both streams share most of the codebase, but only the
> data stream declares support for DMABUF transfer mode.
>
> I have tried the DMABUF transfer mode with CONFIG_DMABUF_HEAPS_SYSTEM
> and the frames looked correct.
>
> This patch announces the support for DMABUF for the metadata stream.
> This is useful for apps/HALs that only want to support DMABUF.
>
> Cc: [email protected]
> Fixes: 088ead2552458 ("media: uvcvideo: Add a metadata device node")
> Signed-off-by: Ricardo Ribalda <[email protected]>
> Reviewed-by: Laurent Pinchart <[email protected]>
> Reviewed-by: Hans de Goede <[email protected]>
> Link:
> https://patch.msgid.link/[email protected]
> Signed-off-by: Laurent Pinchart <[email protected]>
> Signed-off-by: Hans Verkuil <[email protected]>
Patch committed.
Thanks,
Hans Verkuil
drivers/media/usb/uvc/uvc_queue.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/drivers/media/usb/uvc/uvc_queue.c
b/drivers/media/usb/uvc/uvc_queue.c
index 8b8f44b4a045..0eddd4f872ca 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -243,7 +243,7 @@ int uvc_queue_init(struct uvc_video_queue *queue, enum
v4l2_buf_type type)
int ret;
queue->queue.type = type;
- queue->queue.io_modes = VB2_MMAP | VB2_USERPTR;
+ queue->queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
queue->queue.drv_priv = queue;
queue->queue.buf_struct_size = sizeof(struct uvc_buffer);
queue->queue.mem_ops = &vb2_vmalloc_memops;
@@ -256,7 +256,6 @@ int uvc_queue_init(struct uvc_video_queue *queue, enum
v4l2_buf_type type)
queue->queue.ops = &uvc_meta_queue_qops;
break;
default:
- queue->queue.io_modes |= VB2_DMABUF;
queue->queue.ops = &uvc_queue_qops;
break;
}
_______________________________________________
linuxtv-commits mailing list -- [email protected]
To unsubscribe send an email to [email protected]
