diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index a78b16fe20fd8..2bf0c3cd23ddd 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -4907,6 +4907,28 @@ static bool needs_scaling(const struct intel_plane_state *state) return (src_w != dst_w || src_h != dst_h); } +static bool intel_plane_do_async_flip(struct intel_plane *plane, + const struct intel_crtc_state *old_crtc_state, + const struct intel_crtc_state *new_crtc_state) +{ + struct drm_i915_private *i915 = to_i915(plane->base.dev); + + if (!plane->async_flip) + return false; + + if (!new_crtc_state->uapi.async_flip) + return false; + + /* + * In platforms after DISPLAY13, we might need to override + * first async flip in order to change watermark levels + * as part of optimization. + * So for those, we are checking if this is a first async flip. + * For platforms earlier than DISPLAY13 we always do async flip. + */ + return DISPLAY_VER(i915) < 13 || old_crtc_state->uapi.async_flip; +} + int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_state, struct intel_crtc_state *new_crtc_state, const struct intel_plane_state *old_plane_state, @@ -5026,7 +5048,7 @@ int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_stat needs_scaling(new_plane_state)))) new_crtc_state->disable_lp_wm = true; - if (new_crtc_state->uapi.async_flip && plane->async_flip) + if (intel_plane_do_async_flip(plane, old_crtc_state, new_crtc_state)) new_plane_state->do_async_flip = true; return 0; diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index f7cd936e7be0a..467e89dafe37a 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4906,6 +4906,17 @@ static u8 skl_compute_dbuf_slices(struct intel_crtc *crtc, u8 active_pipes) return active_pipes & BIT(pipe) ? BIT(DBUF_S1) : 0; } +static bool +use_minimal_wm0_only(const struct intel_crtc_state *crtc_state, + struct intel_plane *plane) +{ + struct drm_i915_private *i915 = to_i915(plane->base.dev); + + return DISPLAY_VER(i915) >= 13 && + crtc_state->uapi.async_flip && + plane->async_flip; +} + static u64 skl_plane_relative_data_rate(const struct intel_crtc_state *crtc_state, const struct intel_plane_state *plane_state, @@ -5510,7 +5521,8 @@ static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state, uint_fixed_16_16_t selected_result; u32 blocks, lines, min_ddb_alloc = 0; - if (latency == 0) { + if (latency == 0 || + (use_minimal_wm0_only(crtc_state, plane) && level > 0)) { /* reject it */ result->min_ddb_alloc = U16_MAX; return;