media: imx-mipi-csis: Implement .init_cfg() using .set_fmt()

The .set_fmt() handler is responsible for adjusting the requested format
based on the device limitations. Implement .init_cfg() as a wrapper of
.set_fmt(), to ensure that the initial configuration always matches the
rules implemented in .set_fmt(), should they ever change.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Adam Ford <aford173@gmail.com> #imx8mn-beacon
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/nxp/imx-mipi-csis.c

@@ -989,32 +989,6 @@ static int mipi_csis_s_stream(struct v4l2_subdev *sd, int enable)
 	return ret;
 }
 
-static int mipi_csis_init_cfg(struct v4l2_subdev *sd,
-			      struct v4l2_subdev_state *sd_state)
-{
-	struct v4l2_mbus_framefmt *fmt_sink;
-	struct v4l2_mbus_framefmt *fmt_source;
-
-	fmt_sink = v4l2_subdev_get_pad_format(sd, sd_state, CSIS_PAD_SINK);
-	fmt_source = v4l2_subdev_get_pad_format(sd, sd_state, CSIS_PAD_SOURCE);
-
-	fmt_sink->code = MEDIA_BUS_FMT_UYVY8_1X16;
-	fmt_sink->width = MIPI_CSIS_DEF_PIX_WIDTH;
-	fmt_sink->height = MIPI_CSIS_DEF_PIX_HEIGHT;
-	fmt_sink->field = V4L2_FIELD_NONE;
-
-	fmt_sink->colorspace = V4L2_COLORSPACE_SMPTE170M;
-	fmt_sink->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt_sink->colorspace);
-	fmt_sink->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt_sink->colorspace);
-	fmt_sink->quantization =
-		V4L2_MAP_QUANTIZATION_DEFAULT(false, fmt_sink->colorspace,
-					      fmt_sink->ycbcr_enc);
-
-	*fmt_source = *fmt_sink;
-
-	return 0;
-}
-
 static int mipi_csis_enum_mbus_code(struct v4l2_subdev *sd,
 				    struct v4l2_subdev_state *sd_state,
 				    struct v4l2_subdev_mbus_code_enum *code)
@@ -1101,6 +1075,7 @@ static int mipi_csis_set_fmt(struct v4l2_subdev *sd,
 	fmt->code = csis_fmt->code;
 	fmt->width = sdformat->format.width;
 	fmt->height = sdformat->format.height;
+	fmt->field = V4L2_FIELD_NONE;
 	fmt->colorspace = sdformat->format.colorspace;
 	fmt->quantization = sdformat->format.quantization;
 	fmt->xfer_func = sdformat->format.xfer_func;
@@ -1147,6 +1122,27 @@ static int mipi_csis_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
 	return 0;
 }
 
+static int mipi_csis_init_cfg(struct v4l2_subdev *sd,
+			      struct v4l2_subdev_state *sd_state)
+{
+	struct v4l2_subdev_format fmt = {
+		.pad = CSIS_PAD_SINK,
+	};
+
+	fmt.format.code = mipi_csis_formats[0].code;
+	fmt.format.width = MIPI_CSIS_DEF_PIX_WIDTH;
+	fmt.format.height = MIPI_CSIS_DEF_PIX_HEIGHT;
+
+	fmt.format.colorspace = V4L2_COLORSPACE_SMPTE170M;
+	fmt.format.xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt.format.colorspace);
+	fmt.format.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt.format.colorspace);
+	fmt.format.quantization =
+		V4L2_MAP_QUANTIZATION_DEFAULT(false, fmt.format.colorspace,
+					      fmt.format.ycbcr_enc);
+
+	return mipi_csis_set_fmt(sd, sd_state, &fmt);
+}
+
 static int mipi_csis_log_status(struct v4l2_subdev *sd)
 {
 	struct mipi_csis_device *csis = sd_to_mipi_csis_device(sd);