intel_crtc_can_enable_sagv
if (intel_crtc_can_enable_sagv(old_crtc_state) ==
intel_crtc_can_enable_sagv(new_crtc_state))
if (intel_crtc_can_enable_sagv(new_crtc_state))
intel_crtc_can_enable_sagv(new_crtc_state);
bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state);