DC_HPD1_CONTROL
#define DC_HPDx_CONTROL(x) (DC_HPD1_CONTROL + (x * 0xc))
WREG32(DC_HPD1_CONTROL, 0);
WREG32(DC_HPD1_CONTROL, tmp);
#define DC_HPDx_CONTROL(x) (DC_HPD1_CONTROL + (x * 0xc))