WM2_LP_ILK
I915_WRITE(WM2_LP_ILK, previous->wm_lp[1]);
I915_WRITE(WM2_LP_ILK, results->wm_lp[1]);
I915_WRITE(WM2_LP_ILK, I915_READ(WM2_LP_ILK) & ~WM1_LP_SR_EN);
hw->wm_lp[1] = I915_READ(WM2_LP_ILK);