diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 3501c33e75a8..8375054ba27d 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5120,8 +5120,7 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state, { struct drm_device *dev = crtc_state->uapi.crtc->dev; const struct drm_i915_private *dev_priv = to_i915(dev); - u16 trans_min, trans_y_tile_min; - const u16 trans_amount = 10; /* This is configurable amount */ + u16 trans_min, trans_amount, trans_y_tile_min; u16 wm0_sel_res_b, trans_offset_b, res_blocks; /* Transition WM don't make any sense if ipc is disabled */ @@ -5135,9 +5134,16 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state, if (IS_GEN9_BC(dev_priv) || IS_BROXTON(dev_priv)) return; - trans_min = 14; if (INTEL_GEN(dev_priv) >= 11) trans_min = 4; + else + trans_min = 14; + + /* Display WA #1140: glk,cnl */ + if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv)) + trans_amount = 0; + else + trans_amount = 10; /* This is configurable amount */ trans_offset_b = trans_min + trans_amount; @@ -5164,7 +5170,6 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state, /* WA BUG:1938466 add one block for non y-tile planes */ if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_A0)) res_blocks += 1; - } /*