media: smiapp: Support the "rotation" property

Use the "rotation" property to tell that the sensor is mounted upside
down. This reverses the behaviour of the VFLIP and HFLIP controls as well
as the pixel order.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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

@@ -2764,6 +2764,7 @@ static struct smiapp_hwconfig *smiapp_get_hwconfig(struct device *dev)
 	struct v4l2_fwnode_endpoint *bus_cfg;
 	struct fwnode_handle *ep;
 	struct fwnode_handle *fwnode = dev_fwnode(dev);
+	u32 rotation;
 	int i;
 	int rval;
 
@@ -2800,6 +2801,21 @@ static struct smiapp_hwconfig *smiapp_get_hwconfig(struct device *dev)
 
 	dev_dbg(dev, "lanes %u\n", hwcfg->lanes);
 
+	rval = fwnode_property_read_u32(fwnode, "rotation", &rotation);
+	if (!rval) {
+		switch (rotation) {
+		case 180:
+			hwcfg->module_board_orient =
+				SMIAPP_MODULE_BOARD_ORIENT_180;
+			/* Fall through */
+		case 0:
+			break;
+		default:
+			dev_err(dev, "invalid rotation %u\n", rotation);
+			goto out_err;
+		}
+	}
+
 	/* NVM size is not mandatory */
 	fwnode_property_read_u32(fwnode, "nokia,nvm-size", &hwcfg->nvm_size);