V4L/DVB (10231): v4l2-subdev: add v4l2_ext_controls support

The saa6752hs module needs this.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/v4l2-subdev.c

@@ -33,6 +33,12 @@ int v4l2_subdev_command(struct v4l2_subdev *sd, unsigned cmd, void *arg)
 		return v4l2_subdev_call(sd, core, g_ctrl, arg);
 	case VIDIOC_S_CTRL:
 		return v4l2_subdev_call(sd, core, s_ctrl, arg);
+	case VIDIOC_G_EXT_CTRLS:
+		return v4l2_subdev_call(sd, core, g_ext_ctrls, arg);
+	case VIDIOC_S_EXT_CTRLS:
+		return v4l2_subdev_call(sd, core, s_ext_ctrls, arg);
+	case VIDIOC_TRY_EXT_CTRLS:
+		return v4l2_subdev_call(sd, core, try_ext_ctrls, arg);
 	case VIDIOC_QUERYMENU:
 		return v4l2_subdev_call(sd, core, querymenu, arg);
 	case VIDIOC_LOG_STATUS:

include/media/v4l2-subdev.h

@@ -78,6 +78,9 @@ struct v4l2_subdev_core_ops {
 	int (*queryctrl)(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc);
 	int (*g_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl);
 	int (*s_ctrl)(struct v4l2_subdev *sd, struct v4l2_control *ctrl);
+	int (*g_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
+	int (*s_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
+	int (*try_ext_ctrls)(struct v4l2_subdev *sd, struct v4l2_ext_controls *ctrls);
 	int (*querymenu)(struct v4l2_subdev *sd, struct v4l2_querymenu *qm);
 	long (*ioctl)(struct v4l2_subdev *sd, unsigned int cmd, void *arg);
 #ifdef CONFIG_VIDEO_ADV_DEBUG