V4L/DVB: mx2_camera: remove emma limitation for RGB565

In the current source status the emma has no limitation for any PIXFMT
since the data is parsed raw and unprocessed into the memory.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/mx2_camera.c

@@ -716,8 +716,11 @@ static void mx27_camera_emma_buf_init(struct soc_camera_device *icd,
 	/*
 	 * We only use the EMMA engine to get rid of the broken
 	 * DMA Engine. No color space consversion at the moment.
-	 * We adjust incoming and outgoing pixelformat to rgb16
-	 * and adjust the bytesperline accordingly.
+	 * We set the incomming and outgoing pixelformat to an
+	 * 16 Bit wide format and adjust the bytesperline
+	 * accordingly. With this configuration the inputdata
+	 * will not be changed by the emma and could be any type
+	 * of 16 Bit Pixelformat.
 	 */
 	writel(PRP_CNTL_CH1EN |
 			PRP_CNTL_CSIEN |
@@ -903,10 +906,6 @@ static int mx2_camera_set_fmt(struct soc_camera_device *icd,
 		return -EINVAL;
 	}
 
-	/* eMMA can only do RGB565 */
-	if (mx27_camera_emma(pcdev) && pix->pixelformat != V4L2_PIX_FMT_RGB565)
-		return -EINVAL;
-
 	mf.width	= pix->width;
 	mf.height	= pix->height;
 	mf.field	= pix->field;
@@ -950,10 +949,6 @@ static int mx2_camera_try_fmt(struct soc_camera_device *icd,
 
 	/* FIXME: implement MX27 limits */
 
-	/* eMMA can only do RGB565 */
-	if (mx27_camera_emma(pcdev) && pixfmt != V4L2_PIX_FMT_RGB565)
-		return -EINVAL;
-
 	/* limit to MX25 hardware capabilities */
 	if (cpu_is_mx25()) {
 		if (xlate->host_fmt->bits_per_sample <= 8)