From: Ville Syrjälä Date: Fri, 26 Feb 2021 15:31:59 +0000 (+0200) Subject: drm/i915: Zero out SAGV wm when we don't have enough DDB for it X-Git-Tag: microblaze-v5.14~4^2~20^2~31 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=df4a50a35e2cae77b51ca5e39a19a61272055117;p=linux-2.6-microblaze.git drm/i915: Zero out SAGV wm when we don't have enough DDB for it Let's handle the SAGV WM0 more like the other wm levels and just totally zero it out when we don't have the DDB space to back it up. Cc: Stanislav Lisovskiy Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20210226153204.1270-3-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 2d0e3e7f11b8..c341fa957884 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3921,12 +3921,10 @@ static bool tgl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state) return true; for_each_plane_id_on_crtc(crtc, plane_id) { - const struct skl_ddb_entry *plane_alloc = - &crtc_state->wm.skl.plane_ddb_y[plane_id]; const struct skl_plane_wm *wm = &crtc_state->wm.skl.optimal.planes[plane_id]; - if (skl_ddb_entry_size(plane_alloc) < wm->sagv_wm0.min_ddb_alloc) + if (wm->wm[0].plane_en && !wm->sagv_wm0.plane_en) return false; } @@ -4957,8 +4955,8 @@ skl_allocate_plane_ddb(struct intel_atomic_state *state, } /* - * Go back and disable the transition watermark if it turns out we - * don't have enough DDB blocks for it. + * Go back and disable the transition and SAGV watermarks + * if it turns out we don't have enough DDB blocks for them. */ for_each_plane_id_on_crtc(crtc, plane_id) { struct skl_plane_wm *wm = @@ -4966,6 +4964,9 @@ skl_allocate_plane_ddb(struct intel_atomic_state *state, if (wm->trans_wm.plane_res_b >= total[plane_id]) memset(&wm->trans_wm, 0, sizeof(wm->trans_wm)); + + if (wm->sagv_wm0.plane_res_b >= total[plane_id]) + memset(&wm->sagv_wm0, 0, sizeof(wm->sagv_wm0)); } return 0;