VLV_EMR
emr = intel_de_read(display, VLV_EMR);
intel_de_write(display, VLV_EMR, 0xffffffff);
intel_de_write(display, VLV_EMR, emr);
#define VLV_ERROR_REGS INTEL_ERROR_REGS(VLV_EMR, VLV_EIR)