From: Ville Syrjälä Date: Fri, 5 Mar 2021 15:36:08 +0000 (+0200) Subject: drm/i915: Calculate min_ddb_alloc for trans_wm X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=18ffd6de8c50fdbb925e421f70ea0d1a60f81528;p=kernel.git drm/i915: Calculate min_ddb_alloc for trans_wm Let's make all the "do we have enough DDB for this WM level?" checks use min_ddb_alloc. To achieve that we need to populate this for the transition watermarks as well. Cc: Stanislav Lisovskiy Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20210305153610.12177-5-ville.syrjala@linux.intel.com Reviewed-by: Stanislav Lisovskiy --- diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 986ef5eff3744..ee11447f50aa8 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4986,13 +4986,13 @@ skl_allocate_plane_ddb(struct intel_atomic_state *state, struct skl_plane_wm *wm = &crtc_state->wm.skl.optimal.planes[plane_id]; - if (wm->trans_wm.plane_res_b >= total[plane_id]) + if (wm->trans_wm.min_ddb_alloc > total[plane_id]) memset(&wm->trans_wm, 0, sizeof(wm->trans_wm)); if (wm->sagv.wm0.min_ddb_alloc > total[plane_id]) memset(&wm->sagv.wm0, 0, sizeof(wm->sagv.wm0)); - if (wm->sagv.trans_wm.plane_res_b >= total[plane_id]) + if (wm->sagv.trans_wm.min_ddb_alloc > total[plane_id]) memset(&wm->sagv.trans_wm, 0, sizeof(wm->sagv.trans_wm)); } @@ -5404,13 +5404,15 @@ static void skl_compute_transition_wm(struct drm_i915_private *dev_priv, } else { res_blocks = wm0_sel_res_b + trans_offset_b; } + res_blocks++; /* * Just assume we can enable the transition watermark. After * computing the DDB we'll come back and disable it if that * assumption turns out to be false. */ - trans_wm->plane_res_b = res_blocks + 1; + trans_wm->plane_res_b = res_blocks; + trans_wm->min_ddb_alloc = max_t(u16, wm0->min_ddb_alloc, res_blocks + 1); trans_wm->plane_en = true; }