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drm/amd/display: Add HUBP surface flip interrupt handler

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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
This commit is contained in:
Rodrigo Siqueira 2022-10-31 14:58:12 -04:00 committed by Alex Deucher
parent 0d502ef889
commit 7af87fc1ba
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubp.c
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@ -87,6 +87,7 @@ static struct hubp_funcs dcn31_hubp_funcs = {
.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,
};