intel_freq_opcode
int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
val = intel_freq_opcode(dev_priv, val);
val = intel_freq_opcode(dev_priv, val);
val = intel_freq_opcode(dev_priv, val);
intel_freq_opcode(dev_priv, 450));