DPLL_DVO_2X_MODE
dpll |= DPLL_DVO_2X_MODE;
I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
dpll = (I915_READ(DPLL(pipe)) & DPLL_DVO_2X_MODE) |
I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
dpll |= DPLL_DVO_2X_MODE;
pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE;
I915_WRITE(DPLL(pipe), dpll[pipe] | DPLL_DVO_2X_MODE);