PIPE_WM_LINETIME
I915_WRITE(PIPE_WM_LINETIME(PIPE_A), results->wm_linetime[0]);
I915_WRITE(PIPE_WM_LINETIME(PIPE_B), results->wm_linetime[1]);
I915_WRITE(PIPE_WM_LINETIME(PIPE_C), results->wm_linetime[2]);
I915_WRITE(PIPE_WM_LINETIME(pipe), pipe_wm->linetime);
out->linetime = I915_READ(PIPE_WM_LINETIME(pipe));
hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe));