WM1_LP_ILK
intel_de_write(display, WM1_LP_ILK, previous->wm_lp[0]);
intel_de_write(display, WM1_LP_ILK, results->wm_lp[0]);
intel_de_rmw(display, WM1_LP_ILK, WM_LP_ENABLE, 0);
hw->wm_lp[0] = intel_de_read(display, WM1_LP_ILK);
sr_enabled = intel_de_read(display, WM1_LP_ILK) & WM_LP_ENABLE;
MMIO_D(WM1_LP_ILK);