MG_DP_MODE
ln0 = I915_READ(MG_DP_MODE(port, 0));
ln1 = I915_READ(MG_DP_MODE(port, 1));
I915_WRITE(MG_DP_MODE(port, 0), ln0);
I915_WRITE(MG_DP_MODE(port, 1), ln1);
i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) };
i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) };