[media] rcar-vin: move chip check for pixelformat support

The check for if the specific pixelformat is supported on the current
chip should happen in VIDIOC_S_FMT and VIDIOC_TRY_FMT and not when we
try to setup the hardware for streaming.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/rcar-vin/rcar-dma.c

@@ -225,11 +225,9 @@ static int rvin_setup(struct rvin_dev *vin)
 		dmr = 0;
 		break;
 	case V4L2_PIX_FMT_XBGR32:
-		if (vin->chip == RCAR_GEN2 || vin->chip == RCAR_H1) {
-			dmr = VNDMR_EXRGB;
-			break;
-		}
-		/* fall through */
+		/* Note: not supported on M1 */
+		dmr = VNDMR_EXRGB;
+		break;
 	default:
 		vin_err(vin, "Invalid pixelformat (0x%x)\n",
 			vin->format.pixelformat);

drivers/media/platform/rcar-vin/rcar-v4l2.c

@@ -192,6 +192,11 @@ static int __rvin_try_format(struct rvin_dev *vin,
 	pix->sizeimage = max_t(u32, pix->sizeimage,
 			       rvin_format_sizeimage(pix));
 
+	if (vin->chip == RCAR_M1 && pix->pixelformat == V4L2_PIX_FMT_XBGR32) {
+		vin_err(vin, "pixel format XBGR32 not supported on M1\n");
+		return -EINVAL;
+	}
+
 	vin_dbg(vin, "Requested %ux%u Got %ux%u bpl: %d size: %d\n",
 		rwidth, rheight, pix->width, pix->height,
 		pix->bytesperline, pix->sizeimage);