DPLL_MD
I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
POSTING_READ(DPLL_MD(pipe));
I915_WRITE(DPLL_MD(PIPE_B), pipe_config->dpll_hw_state.dpll_md);
I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
POSTING_READ(DPLL_MD(pipe));
I915_WRITE(DPLL_MD(crtc->pipe),
tmp = I915_READ(DPLL_MD(crtc->pipe));