PCH_TRANSCONF
#define LPT_TRANSCONF PCH_TRANSCONF(PIPE_A) /* lpt has only one transcoder */
val = I915_READ(PCH_TRANSCONF(pipe));
reg = PCH_TRANSCONF(pipe);
reg = PCH_TRANSCONF(pipe);
if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {