LVDS_PORT_EN
bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
return val & LVDS_PORT_EN;
temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
I915_WRITE(lvds_encoder->reg, I915_READ(lvds_encoder->reg) | LVDS_PORT_EN);
I915_WRITE(lvds_encoder->reg, I915_READ(lvds_encoder->reg) & ~LVDS_PORT_EN);
if ((lvds & LVDS_PORT_EN) == 0) {