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drm/amd/display: Add debug option to skip PSR CRTC disable

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[ Upstream commit 00812bfc7bcb02faf127ee05f6ac27a5581eb701 ]

[Why]
It's currently tied to Z10 support, and is required for Z10, but
we can still support Z10 display off without PSR.

We currently need to skip the PSR CRTC disable to prevent stuttering
and underflow from occuring during PSR-SU.

[How]
Add a debug option to allow specifying this separately.

Reviewed-by: Robin Chen <robin.chen@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Stable-dep-of: d893f39320e1 ("drm/amd/display: Lowering min Z8 residency time")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Nicholas Kazlauskas 2022-11-25 11:30:38 -05:00 committed by Greg Kroah-Hartman
parent bcde2c8779
commit 1822513408
3 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@ -3381,7 +3381,7 @@ bool dc_link_setup_psr(struct dc_link *link,
case FAMILY_YELLOW_CARP:
case AMDGPU_FAMILY_GC_10_3_6:
case AMDGPU_FAMILY_GC_11_0_1:
if (dc->debug.disable_z10)
if (dc->debug.disable_z10 || dc->debug.psr_skip_crtc_disable)
psr_context->psr_level.bits.SKIP_CRTC_DISABLE = true;
break;
default:

1
drivers/gpu/drm/amd/display/dc/dc.h
View File

@ -829,6 +829,7 @@ struct dc_debug_options {
int crb_alloc_policy_min_disp_count;
bool disable_z10;
bool enable_z9_disable_interface;
bool psr_skip_crtc_disable;
union dpia_debug_options dpia_debug;
bool disable_fixed_vs_aux_timeout_wa;
bool force_disable_subvp;

1
drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
View File

@ -884,6 +884,7 @@ static const struct dc_plane_cap plane_cap = {
static const struct dc_debug_options debug_defaults_drv = {
.disable_z10 = false,
.enable_z9_disable_interface = true,
.psr_skip_crtc_disable = true,
.disable_dmcu = true,
.force_abm_enable = false,
.timing_trace = false,