FDI_TX_ENABLE
cur_state = !!(val & FDI_TX_ENABLE);
I915_WRITE(reg, temp | FDI_TX_ENABLE);
I915_WRITE(reg, temp | FDI_TX_ENABLE);
temp &= ~FDI_TX_ENABLE;
I915_WRITE(reg, temp | FDI_TX_ENABLE);
I915_WRITE(reg, temp & ~FDI_TX_ENABLE);