INTEL_PIPE_ENABLED
& INTEL_PIPE_ENABLED) != 0;
write32(pipeReg, read32(pipeReg) | INTEL_PIPE_ENABLED);
write32(pipeReg, read32(pipeReg) | INTEL_PIPE_ENABLED);
write32(pipeReg, read32(pipeReg) & ~INTEL_PIPE_ENABLED);