media: v4l2-subdev: Drop .set_mbus_config() operation

The .set_mbus_config() operation is deprecated, and nothing in the
kernel uses it. Drop it.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/v4l2-core/v4l2-subdev.c

@@ -318,13 +318,6 @@ static int call_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad,
 	       sd->ops->pad->get_mbus_config(sd, pad, config);
 }
 
-static int call_set_mbus_config(struct v4l2_subdev *sd, unsigned int pad,
-				struct v4l2_mbus_config *config)
-{
-	return check_pad(sd, pad) ? :
-	       sd->ops->pad->get_mbus_config(sd, pad, config);
-}
-
 static const struct v4l2_subdev_pad_ops v4l2_subdev_call_pad_wrappers = {
 	.get_fmt		= call_get_fmt,
 	.set_fmt		= call_set_fmt,
@@ -338,7 +331,6 @@ static const struct v4l2_subdev_pad_ops v4l2_subdev_call_pad_wrappers = {
 	.dv_timings_cap		= call_dv_timings_cap,
 	.enum_dv_timings	= call_enum_dv_timings,
 	.get_mbus_config	= call_get_mbus_config,
-	.set_mbus_config	= call_set_mbus_config,
 };
 
 static const struct v4l2_subdev_video_ops v4l2_subdev_call_video_wrappers = {

include/media/v4l2-mediabus.h

@@ -15,15 +15,14 @@
  * How to use the V4L2_MBUS_* flags:
  * Flags are defined for each of the possible states and values of a media
  * bus configuration parameter. One and only one bit of each group of flags
- * shall be set by the users of the v4l2_subdev_pad_ops.get_mbus_config and
- * v4l2_subdev_pad_ops.set_mbus_config operations to ensure that no
- * conflicting settings are specified when reporting and setting the media bus
- * configuration with the two operations respectively. For example, it is
- * invalid to set or clear both the V4L2_MBUS_HSYNC_ACTIVE_HIGH and the
+ * shall be set by the users of the v4l2_subdev_pad_ops.get_mbus_config
+ * operation to ensure that no conflicting settings are specified when
+ * reporting the media bus configuration. For example, it is invalid to set or
+ * clear both the V4L2_MBUS_HSYNC_ACTIVE_HIGH and the
  * V4L2_MBUS_HSYNC_ACTIVE_LOW flag at the same time. Instead either flag
- * V4L2_MBUS_HSYNC_ACTIVE_HIGH or flag V4L2_MBUS_HSYNC_ACTIVE_LOW shall be
- * set. The same is true for the V4L2_MBUS_CSI2_1/2/3/4_LANE flags group: only
- * one of these four bits shall be set.
+ * V4L2_MBUS_HSYNC_ACTIVE_HIGH or flag V4L2_MBUS_HSYNC_ACTIVE_LOW shall be set.
+ * The same is true for the V4L2_MBUS_CSI2_1/2/3/4_LANE flags group: only one
+ * of these four bits shall be set.
  *
  * TODO: replace the existing V4L2_MBUS_* flags with structures of fields
  * to avoid conflicting settings.

include/media/v4l2-subdev.h

@@ -715,17 +715,6 @@ struct v4l2_subdev_state {
  *		     this operation as close as possible to stream on time. The
  *		     operation shall fail if the pad index it has been called on
  *		     is not valid or in case of unrecoverable failures.
- *
- * @set_mbus_config: set the media bus configuration of a remote sub-device.
- *		     This operations is intended to allow, in combination with
- *		     the get_mbus_config operation, the negotiation of media bus
- *		     configuration parameters between media sub-devices. The
- *		     operation shall not fail if the requested configuration is
- *		     not supported, but the driver shall update the content of
- *		     the %config argument to reflect what has been actually
- *		     applied to the hardware. The operation shall fail if the
- *		     pad index it has been called on is not valid or in case of
- *		     unrecoverable failures.
  */
 struct v4l2_subdev_pad_ops {
 	int (*init_cfg)(struct v4l2_subdev *sd,
@@ -768,8 +757,6 @@ struct v4l2_subdev_pad_ops {
 			      struct v4l2_mbus_frame_desc *fd);
 	int (*get_mbus_config)(struct v4l2_subdev *sd, unsigned int pad,
 			       struct v4l2_mbus_config *config);
-	int (*set_mbus_config)(struct v4l2_subdev *sd, unsigned int pad,
-			       struct v4l2_mbus_config *config);
 };
 
 /**