v4l: xilinx: xcsi2rxss: Source pad has same format as sink pad

This IP doesn't do any color conversion. So sink and source pad should
have same color format. The format set on sink pad is set for source
pad.

Signed-off-by: Vishal Sagar <vishal.sagar@xilinx.com>
Reviewed-by: Hyun Kwon <hyun.kwon@xilinx.com>
State: pending

drivers/media/platform/xilinx/xilinx-csi2rxss.c

@@ -501,7 +501,7 @@ struct xcsi2rxss_state {
 	struct xcsi2rxss_core core;
 	struct v4l2_subdev subdev;
 	struct v4l2_ctrl_handler ctrl_handler;
-	struct v4l2_mbus_framefmt formats[2];
+	struct v4l2_mbus_framefmt formats;
 	struct v4l2_mbus_framefmt default_format;
 	const struct xvip_video_format *vip_format;
 	struct v4l2_event event;
@@ -1293,7 +1293,7 @@ __xcsi2rxss_get_pad_format(struct xcsi2rxss_state *xcsi2rxss,
 	case V4L2_SUBDEV_FORMAT_TRY:
 		return v4l2_subdev_get_try_format(&xcsi2rxss->subdev, cfg, pad);
 	case V4L2_SUBDEV_FORMAT_ACTIVE:
-		return &xcsi2rxss->formats[pad];
+		return &xcsi2rxss->formats;
 	default:
 		return NULL;
 	}
@@ -1358,6 +1358,15 @@ static int xcsi2rxss_set_format(struct v4l2_subdev *sd,
 	__format = __xcsi2rxss_get_pad_format(xcsi2rxss, cfg,
 						fmt->pad, fmt->which);
 
+	/*
+	 * If trying to set format on source pad, then
+	 * return the format set on sink pad
+	 */
+	if (fmt->pad == 0) {
+		fmt->format = *__format;
+		goto unlock_set_fmt;
+	}
+
 	/* Save the pad format code */
 	code = __format->code;
 
@@ -1400,6 +1409,7 @@ static int xcsi2rxss_set_format(struct v4l2_subdev *sd,
 		__format->height = fmt->format.height;
 	}
 
+unlock_set_fmt:
 	mutex_unlock(&xcsi2rxss->lock);
 
 	return 0;
@@ -1914,8 +1924,7 @@ static int xcsi2rxss_probe(struct platform_device *pdev)
 	xcsi2rxss->default_format.width = XCSI_DEFAULT_WIDTH;
 	xcsi2rxss->default_format.height = XCSI_DEFAULT_HEIGHT;
 
-	xcsi2rxss->formats[0] = xcsi2rxss->default_format;
-	xcsi2rxss->formats[1] = xcsi2rxss->default_format;
+	xcsi2rxss->formats = xcsi2rxss->default_format;
 
 	/* Initialize V4L2 subdevice and media entity */
 	subdev = &xcsi2rxss->subdev;