Lines Matching defs:rotation
333 * the "rotation" binding from a device tree node
337 * Looks up the rotation of a panel in the device tree. The orientation of the
338 * panel is expressed as a property name "rotation" in the device tree. The
339 * rotation in the device tree is counter clockwise.
341 * Return: 0 when a valid rotation value (0, 90, 180, or 270) is read or the
342 * rotation property doesn't exist. Return a negative error code on failure.
347 int rotation, ret;
349 ret = of_property_read_u32(np, "rotation", &rotation);
351 /* Don't return an error if there's no rotation property. */
359 if (rotation == 0)
361 else if (rotation == 90)
363 else if (rotation == 180)
365 else if (rotation == 270)