V4L/DVB (11112): v4l2-subdev: add support for TRY_FMT, ENUM_FMT and G/S_PARM.

These ops are used by the ov7670 driver, so these need to be added.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/v4l2-subdev.c

@@ -98,6 +98,10 @@ int v4l2_subdev_command(struct v4l2_subdev *sd, unsigned cmd, void *arg)
 		return v4l2_subdev_call(sd, video, g_vbi_data, arg);
 	case VIDIOC_G_SLICED_VBI_CAP:
 		return v4l2_subdev_call(sd, video, g_sliced_vbi_cap, arg);
+	case VIDIOC_ENUM_FMT:
+		return v4l2_subdev_call(sd, video, enum_fmt, arg);
+	case VIDIOC_TRY_FMT:
+		return v4l2_subdev_call(sd, video, try_fmt, arg);
 	case VIDIOC_S_FMT:
 		return v4l2_subdev_call(sd, video, s_fmt, arg);
 	case VIDIOC_G_FMT:
@@ -112,6 +116,10 @@ int v4l2_subdev_command(struct v4l2_subdev *sd, unsigned cmd, void *arg)
 		return v4l2_subdev_call(sd, video, s_stream, 1);
 	case VIDIOC_STREAMOFF:
 		return v4l2_subdev_call(sd, video, s_stream, 0);
+	case VIDIOC_S_PARM:
+		return v4l2_subdev_call(sd, video, s_parm, arg);
+	case VIDIOC_G_PARM:
+		return v4l2_subdev_call(sd, video, g_parm, arg);
 
 	default:
 		return v4l2_subdev_call(sd, core, ioctl, cmd, arg);

include/media/v4l2-subdev.h

@@ -118,8 +118,12 @@ struct v4l2_subdev_video_ops {
 	int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std);
 	int (*g_input_status)(struct v4l2_subdev *sd, u32 *status);
 	int (*s_stream)(struct v4l2_subdev *sd, int enable);
-	int (*s_fmt)(struct v4l2_subdev *sd, struct v4l2_format *fmt);
+	int (*enum_fmt)(struct v4l2_subdev *sd, struct v4l2_fmtdesc *fmtdesc);
 	int (*g_fmt)(struct v4l2_subdev *sd, struct v4l2_format *fmt);
+	int (*try_fmt)(struct v4l2_subdev *sd, struct v4l2_format *fmt);
+	int (*s_fmt)(struct v4l2_subdev *sd, struct v4l2_format *fmt);
+	int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
+	int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
 };
 
 struct v4l2_subdev_ops {