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Commit c710f591 authored by Kazunori Kobayashi's avatar Kazunori Kobayashi Committed by Mauro Carvalho Chehab
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[media] soc_camera: Support VIDIOC_EXPBUF ioctl 



This patch allows for exporting a dmabuf descriptor from soc_camera drivers.

Signed-off-by: default avatarKazunori Kobayashi <kkobayas@igel.co.jp>
Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 5d6de11c

drivers/media/platform/soc_camera/soc_camera.c

+17 −0
Original line number Diff line number Diff line
@@ -437,6 +437,22 @@ static int soc_camera_prepare_buf(struct file *file, void *priv, 
		return vb2_prepare_buf(&icd->vb2_vidq, b);

}



static int soc_camera_expbuf(struct file *file, void *priv,

			     struct v4l2_exportbuffer *p)

{

	struct soc_camera_device *icd = file->private_data;

	struct soc_camera_host *ici = to_soc_camera_host(icd->parent);



	if (icd->streamer != file)

		return -EBUSY;



	/* videobuf2 only */

	if (ici->ops->init_videobuf)

		return -EINVAL;

	else

		return vb2_expbuf(&icd->vb2_vidq, p);

}



/* Always entered with .host_lock held */

static int soc_camera_init_user_formats(struct soc_camera_device *icd)

{
@@ -2083,6 +2099,7 @@ static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { 
	.vidioc_dqbuf		 = soc_camera_dqbuf,

	.vidioc_create_bufs	 = soc_camera_create_bufs,

	.vidioc_prepare_buf	 = soc_camera_prepare_buf,

	.vidioc_expbuf		 = soc_camera_expbuf,

	.vidioc_streamon	 = soc_camera_streamon,

	.vidioc_streamoff	 = soc_camera_streamoff,

	.vidioc_cropcap		 = soc_camera_cropcap,