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