EDP_PSR2_ENABLE
u32 val = EDP_PSR2_ENABLE;
intel_de_read(display, EDP_PSR2_CTL(display, cpu_transcoder)) & EDP_PSR2_ENABLE);
drm_WARN_ON(display->drm, val & EDP_PSR2_ENABLE);
EDP_PSR2_ENABLE, 0);
drm_WARN_ON(display->drm, !(val & EDP_PSR2_ENABLE));
enabled = val & EDP_PSR2_ENABLE;