media: smiapp: Query the V4L2 endpoint for a specific bus type

Instead of opportunistically trying to gather some information from the
V4L2 endpoint, set the bus type and let the V4L2 fwnode framework figure
out the configuration.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/i2c/smiapp/smiapp-core.c

@@ -2771,7 +2771,13 @@ static struct smiapp_hwconfig *smiapp_get_hwconfig(struct device *dev)
 	if (!ep)
 		return NULL;
 
+	bus_cfg.bus_type = V4L2_MBUS_CSI2_DPHY;
 	rval = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
+	if (rval == -ENXIO) {
+		bus_cfg = (struct v4l2_fwnode_endpoint)
+			{ .bus_type = V4L2_MBUS_CCP2 };
+		rval = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
+	}
 	if (rval)
 		goto out_err;