[media] exynos4-is: Add missing entity function initialization

Suppresses following warnings:

s5p-fimc-md camera: Entity type for entity FIMC.0 was not initialized!
s5p-fimc-md camera: Entity type for entity FIMC.1 was not initialized!
s5p-fimc-md camera: Entity type for entity s5p-mipi-csis.0 was not initialized!
s5p-fimc-md camera: Entity type for entity s5p-mipi-csis.1 was not initialized!
s5p-fimc-md camera: Entity type for entity FIMC-LITE.0 was not initialized!
s5p-fimc-md camera: Entity type for entity FIMC-LITE.1 was not initialized!
s5p-fimc-md camera: Entity type for entity FIMC-IS-ISP was not initialized!
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/exynos4-is/fimc-capture.c

@@ -1796,6 +1796,7 @@ static int fimc_register_capture_device(struct fimc_dev *fimc,
 	vid_cap->wb_fmt.code = fmt->mbus_code;
 
 	vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
+	vfd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
 	ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad);
 	if (ret)
 		goto err_free_ctx;

drivers/media/platform/exynos4-is/fimc-isp.c

@@ -705,6 +705,7 @@ int fimc_isp_subdev_create(struct fimc_isp *isp)
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	snprintf(sd->name, sizeof(sd->name), "FIMC-IS-ISP");
 
+	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
 	isp->subdev_pads[FIMC_ISP_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
 	isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_FIFO].flags = MEDIA_PAD_FL_SOURCE;
 	isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_DMA].flags = MEDIA_PAD_FL_SOURCE;

drivers/media/platform/exynos4-is/fimc-lite.c

@@ -1432,6 +1432,7 @@ static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
 
 	sd->ctrl_handler = handler;
 	sd->internal_ops = &fimc_lite_subdev_internal_ops;
+	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
 	sd->entity.ops = &fimc_lite_subdev_media_ops;
 	sd->owner = THIS_MODULE;
 	v4l2_set_subdevdata(sd, fimc);

drivers/media/platform/exynos4-is/mipi-csis.c

@@ -853,6 +853,7 @@ static int s5pcsis_probe(struct platform_device *pdev)
 	state->format.width = S5PCSIS_DEF_PIX_WIDTH;
 	state->format.height = S5PCSIS_DEF_PIX_HEIGHT;
 
+	state->sd.entity.function = MEDIA_ENT_F_IO_V4L;
 	state->pads[CSIS_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
 	state->pads[CSIS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
 	ret = media_entity_pads_init(&state->sd.entity,