media: omap3isp: configure entity functions

For the various subdevices, set the function field.

This fixes v4l2-compliance errors:

$ v4l2-compliance -M0
v4l2-compliance 1.33.0-5410, 32 bits, 64-bit time_t
v4l2-compliance SHA: c12c89c5bd70 2025-10-05 09:58:42

Compliance test for omap3isp device /dev/media0:

Media Driver Info:
Driver name : omap3isp
Model : TI OMAP3 ISP
Serial :
Bus info : platform:480bc000.isp
Media version : 6.17.0
Hardware revision: 0x000000f0 (240)
Driver version : 6.17.0

Required ioctls:
test MEDIA_IOC_DEVICE_INFO: OK
test invalid ioctls: OK

Allow for multiple opens:
test second /dev/media0 open: OK
test MEDIA_IOC_DEVICE_INFO: OK
test for unlimited opens: OK

Media Controller ioctls:
fail: v4l2-test-media.cpp(108): function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN
fail: v4l2-test-media.cpp(196): checkFunction(ent.function, true)
test MEDIA_IOC_G_TOPOLOGY: FAIL
fail: v4l2-test-media.cpp(398): num_data_links != num_links
test MEDIA_IOC_ENUM_ENTITIES/LINKS: FAIL
test MEDIA_IOC_SETUP_LINK: OK

Total for omap3isp device /dev/media0: 8, Succeeded: 6, Failed: 2, Warnings: 0

Signed-off-by: Hans Verkuil <[e-mail]>
Acked-by: Sakari Ailus <[e-mail]>

drivers/media/platform/ti/omap3isp/ispccdc.c

···
 	pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE;
 
 	me->ops = &ccdc_media_ops;
+	me->function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV;
 	ret = media_entity_pads_init(me, CCDC_PADS_NUM, pads);
 	if (ret < 0)
 		return ret;

drivers/media/platform/ti/omap3isp/ispccp2.c

···
 	pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
 
 	me->ops = &ccp2_media_ops;
+	me->function = MEDIA_ENT_F_VID_IF_BRIDGE;
 	ret = media_entity_pads_init(me, CCP2_PADS_NUM, pads);
 	if (ret < 0)
 		return ret;

drivers/media/platform/ti/omap3isp/ispcsi2.c

···
 				    | MEDIA_PAD_FL_MUST_CONNECT;
 
 	me->ops = &csi2_media_ops;
+	me->function = MEDIA_ENT_F_VID_IF_BRIDGE;
 	ret = media_entity_pads_init(me, CSI2_PADS_NUM, pads);
 	if (ret < 0)
 		return ret;

drivers/media/platform/ti/omap3isp/isppreview.c

···
 	pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
 
 	me->ops = &preview_media_ops;
+	me->function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
 	ret = media_entity_pads_init(me, PREV_PADS_NUM, pads);
 	if (ret < 0)
 		goto error_handler_free;

drivers/media/platform/ti/omap3isp/ispresizer.c

···
 	pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
 
 	me->ops = &resizer_media_ops;
+	me->function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
 	ret = media_entity_pads_init(me, RESZ_PADS_NUM, pads);
 	if (ret < 0)
 		return ret;

drivers/media/platform/ti/omap3isp/ispstat.c

···
 
 	stat->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT;
 	me->ops = NULL;
+	me->function = MEDIA_ENT_F_PROC_VIDEO_STATISTICS;
 
 	return media_entity_pads_init(me, 1, &stat->pad);
 }