Logitech Streamcam can be mounted in 'portrait mode' as well.
It reports the current roll (-90, 0, 90, 180) with
UVC_CT_ROLL_ABSOLUTE_CONTROL.
Map UVC_CT_ROLL_ABSOLUTE_CONTROL to V4L2_CID_ROLL_ABSOLUTE to
make it available to userspace.
Signed-off-by: Gergő Köteles <soyer@xxxxxx>
---
drivers/media/usb/uvc/uvc_ctrl.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 5e9d3da862dd..2801a1ee04a2 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -748,6 +748,15 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = {
.v4l2_type = V4L2_CTRL_TYPE_BOOLEAN,
.data_type = UVC_CTRL_DATA_TYPE_BOOLEAN,
},
+ {
+ .id = V4L2_CID_ROLL_ABSOLUTE,
+ .entity = UVC_GUID_UVC_CAMERA,
+ .selector = UVC_CT_ROLL_ABSOLUTE_CONTROL,
+ .size = 16,
+ .offset = 0,
+ .v4l2_type = V4L2_CTRL_TYPE_INTEGER,
+ .data_type = UVC_CTRL_DATA_TYPE_SIGNED,
+ },
};
const struct uvc_control_mapping uvc_ctrl_power_line_mapping_limited = {
--
2.41.0
