From e8cb7a4dd9dffff72172d94dcea4577219426106 Mon Sep 17 00:00:00 2001 From: Aric Cyr <aric.cyr@amd.com> Date: Fri, 21 Aug 2020 11:26:51 -0400 Subject: [PATCH] drm/amd/display: Flip pending check timeout due to disabled hubp [Why] When pipe locks are being taken we wait for flip pending to clear first. In some cases the pipe mapping is changed and the pending we're checking for will never clear. [How] Don't check disabled pipes for flip pending. Signed-off-by: Aric Cyr <aric.cyr@amd.com> Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c | 3 +++ drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c index cedf359a00f5c..db5615a51fea8 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubp.c @@ -734,6 +734,9 @@ bool hubp1_is_flip_pending(struct hubp *hubp) struct dcn10_hubp *hubp1 = TO_DCN10_HUBP(hubp); struct dc_plane_address earliest_inuse_address; + if (hubp && hubp->power_gated) + return false; + REG_GET(DCSURF_FLIP_CONTROL, SURFACE_FLIP_PENDING, &flip_pending); diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c index bb920d0e0b892..368818d2dfc63 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c @@ -908,6 +908,9 @@ bool hubp2_is_flip_pending(struct hubp *hubp) struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp); struct dc_plane_address earliest_inuse_address; + if (hubp && hubp->power_gated) + return false; + REG_GET(DCSURF_FLIP_CONTROL, SURFACE_FLIP_PENDING, &flip_pending); -- 2.30.2