Hello.
On 05/28/2014 11:38 AM, Michael Grzeschik wrote:
This patch adds ENUM_FMT as possible ioctl to the uvc v4l2 device.
That makes userspace applications with a generic IOCTL calling
convention make also use of it.
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
---
drivers/usb/gadget/uvc_v4l2.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/usb/gadget/uvc_v4l2.c b/drivers/usb/gadget/uvc_v4l2.c
index 3223b90..abe0e79 100644
--- a/drivers/usb/gadget/uvc_v4l2.c
+++ b/drivers/usb/gadget/uvc_v4l2.c
@@ -185,6 +185,30 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
break;
}
+ case VIDIOC_ENUM_FMT:
+ {
+ struct v4l2_fmtdesc *f = arg;
+
+ switch (f->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ switch (f->index) {
+ case 0:
+ strcpy(f->description, "YUV 4:2:2");
+ f->pixelformat = V4L2_PIX_FMT_YUYV;
+ break;
+ case 1:
+ strcpy(f->description, "MJPEG");
+ f->pixelformat = V4L2_PIX_FMT_MJPEG;
+ break;
+ default:
+ return -EINVAL;
+ }
+ default:
*case*/*default* should be at the same level of indentation as the
*switch*. scripts/checkpatch.pl should have complained here...
+ break;
+ }
+ break;
+ }
+
/* Get & Set format */
case VIDIOC_G_FMT:
{
WBR, Sergei
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