HSYNC
MODE_STATUS(HSYNC),
I915_WRITE(HSYNC(pipe), (656 - 1) | ((752 - 1) << 16));
error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
I915_READ(HSYNC(cpu_transcoder)));
I915_WRITE(HSYNC(cpu_transcoder),
tmp = I915_READ(HSYNC(cpu_transcoder));