From 6bdab0e5b5c0aca6f5aba952df0e4c5934547681 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Roberto=20de=20Souza?= Date: Fri, 16 Jul 2021 18:12:26 -0700 Subject: [PATCH] drm/i915/display/psr2: Fix cursor updates using legacy apis MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The fast path only updates cursor register what will not cause any updates in the screen when using PSR2 selective fetch. The only option that we have is to go through the slow patch that will do full atomic commit, that will trigger the PSR2 selective fetch compute and programing calls. Without this patch is possible to see a mouse movement lag in Gnome when PSR2 selective fetch is enabled. Cc: Gwan-gyeong Mun Signed-off-by: José Roberto de Souza Reviewed-by: Anusha Srivatsa Link: https://patchwork.freedesktop.org/patch/msgid/20210717011227.204494-3-jose.souza@intel.com --- drivers/gpu/drm/i915/display/intel_cursor.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_cursor.c b/drivers/gpu/drm/i915/display/intel_cursor.c index f61a25fb87e9..c7618fef0143 100644 --- a/drivers/gpu/drm/i915/display/intel_cursor.c +++ b/drivers/gpu/drm/i915/display/intel_cursor.c @@ -629,12 +629,16 @@ intel_legacy_cursor_update(struct drm_plane *_plane, /* * When crtc is inactive or there is a modeset pending, - * wait for it to complete in the slowpath + * wait for it to complete in the slowpath. + * PSR2 selective fetch also requires the slow path as + * PSR2 plane and transcoder registers can only be updated during + * vblank. * * FIXME bigjoiner fastpath would be good */ if (!crtc_state->hw.active || intel_crtc_needs_modeset(crtc_state) || - crtc_state->update_pipe || crtc_state->bigjoiner) + crtc_state->update_pipe || crtc_state->bigjoiner || + crtc_state->enable_psr2_sel_fetch) goto slow; /* -- 2.11.0