WM_LP_ENABLE
results->wm_lp[wm_lp - 1] |= WM_LP_ENABLE;
if (dirty & WM_DIRTY_LP(3) && previous->wm_lp[2] & WM_LP_ENABLE) {
previous->wm_lp[2] &= ~WM_LP_ENABLE;
if (dirty & WM_DIRTY_LP(2) && previous->wm_lp[1] & WM_LP_ENABLE) {
previous->wm_lp[1] &= ~WM_LP_ENABLE;
if (dirty & WM_DIRTY_LP(1) && previous->wm_lp[0] & WM_LP_ENABLE) {
previous->wm_lp[0] &= ~WM_LP_ENABLE;
intel_de_rmw(display, WM3_LP_ILK, WM_LP_ENABLE, 0);
intel_de_rmw(display, WM2_LP_ILK, WM_LP_ENABLE, 0);
intel_de_rmw(display, WM1_LP_ILK, WM_LP_ENABLE, 0);
sr_enabled = intel_de_read(display, WM1_LP_ILK) & WM_LP_ENABLE;