FW_BLC_SELF
I915_WRITE(FW_BLC_SELF,
I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
was_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
I915_WRITE(FW_BLC_SELF, enable ? FW_BLC_SELF_EN : 0);
POSTING_READ(FW_BLC_SELF);
was_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
I915_WRITE(FW_BLC_SELF, val);
POSTING_READ(FW_BLC_SELF);
wm->cxsr = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;