From: Rodrigo Siqueira Rodrigo.Siqueira@amd.com
commit 7af87fc1ba136143314c870059b8f60180247cbd upstream.
On IGT, there is a test named amd_hotplug, and when the subtest basic is executed on DCN31, we get the following error:
[drm] *ERROR* [CRTC:71:crtc-0] flip_done timed out [drm] *ERROR* flip_done timed out [drm] *ERROR* [CRTC:71:crtc-0] commit wait timed out [drm] *ERROR* flip_done timed out [drm] *ERROR* [CONNECTOR:88:DP-1] commit wait timed out [drm] *ERROR* flip_done timed out [drm] *ERROR* [PLANE:59:plane-3] commit wait timed out
After enable the page flip log with the below command:
echo -n 'format "[PFLIP]" +p' > /sys/kernel/debug/dynamic_debug/control
It is possible to see that the flip was submitted, but DC never replied back, which generates time-out issues. This is an indication that the HUBP surface flip is missing. This commit fixes this issue by adding hubp1_set_flip_int to DCN31.
Reviewed-by: Nicholas Kazlauskas Nicholas.Kazlauskas@amd.com Acked-by: Tom Chung chiahsuan.chung@amd.com Signed-off-by: Rodrigo Siqueira Rodrigo.Siqueira@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubp.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubp.c @@ -87,6 +87,7 @@ static struct hubp_funcs dcn31_hubp_func .hubp_init = hubp3_init, .set_unbounded_requesting = hubp31_set_unbounded_requesting, .hubp_soft_reset = hubp31_soft_reset, + .hubp_set_flip_int = hubp1_set_flip_int, .hubp_in_blank = hubp1_in_blank, .program_extended_blank = hubp31_program_extended_blank, };