GEN3_SDVOB
#define GEN4_HDMIB GEN3_SDVOB
if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
found = intel_sdvo_init(dev_priv, GEN3_SDVOB, PORT_B);
if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
bval = I915_READ(GEN3_SDVOB);
I915_WRITE(GEN3_SDVOB, bval);
POSTING_READ(GEN3_SDVOB);