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staging/bcm2835-camera: Add support for DMABUFs

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DMABUFs are all handled by videobuf2, so there is no reason not
to enable support for them.

Note that this driver is still using the vmalloc allocator, so
the buffers it allocates will not be compatible with the codec
or ISP driver that require contiguous buffers. However this
driver should be able to import the buffers allocated by them.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2021-03-17 12:34:57 +00:00
committed by Dom Cobley
parent 6bd50a83e0
commit 01c8c6fbf8
1 changed files with 2 additions and 1 deletions
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3
drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
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@@ -1443,6 +1443,7 @@ static const struct v4l2_ioctl_ops camera0_ioctl_ops = {
.vidioc_querybuf = vb2_ioctl_querybuf, .vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf, .vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf, .vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_enum_framesizes = vidioc_enum_framesizes, .vidioc_enum_framesizes = vidioc_enum_framesizes,
.vidioc_enum_frameintervals = vidioc_enum_frameintervals, .vidioc_enum_frameintervals = vidioc_enum_frameintervals,
.vidioc_g_parm = vidioc_g_parm, .vidioc_g_parm = vidioc_g_parm,
@@ -1929,7 +1930,7 @@ static int bcm2835_mmal_probe(struct vchiq_device *device)
q = &dev->capture.vb_vidq; q = &dev->capture.vb_vidq;
memset(q, 0, sizeof(*q)); memset(q, 0, sizeof(*q));
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ | VB2_DMABUF;
q->drv_priv = dev; q->drv_priv = dev;
q->buf_struct_size = sizeof(struct vb2_mmal_buffer); q->buf_struct_size = sizeof(struct vb2_mmal_buffer);
q->ops = &bcm2835_mmal_video_qops; q->ops = &bcm2835_mmal_video_qops;