MIPI_DSI_FUNC_PRG
u32 tmp = I915_READ(MIPI_DSI_FUNC_PRG(port));
fmt = I915_READ(MIPI_DSI_FUNC_PRG(port)) & VID_MODE_FORMAT_MASK;
I915_WRITE(MIPI_DSI_FUNC_PRG(port), val);
val = I915_READ(MIPI_DSI_FUNC_PRG(port));
I915_WRITE(MIPI_DSI_FUNC_PRG(port), val);