HSW_AUD_M_CTS_ENABLE
tmp = I915_READ(HSW_AUD_M_CTS_ENABLE(pipe));
I915_WRITE(HSW_AUD_M_CTS_ENABLE(pipe), tmp);
tmp = I915_READ(HSW_AUD_M_CTS_ENABLE(pipe));
I915_WRITE(HSW_AUD_M_CTS_ENABLE(pipe), tmp);