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drm/amd/display: Add minimum Z8 residency debug option

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[ Upstream commit 0db13eae41fcc67f408dbb3dfda59633c4fa03fb ]

[Why]
Allows finer control and tuning for debug and profiling.

[How]
Add the debug option into DC. The default remains the same as before
for now.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@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 2023-02-17 11:17:50 -05:00 committed by Greg Kroah-Hartman
parent 97b3d8eed0
commit 25f6036242
3 changed files with 4 additions and 1 deletions
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1
drivers/gpu/drm/amd/display/dc/dc.h
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@ -781,6 +781,7 @@ struct dc_debug_options {
unsigned int force_odm_combine; //bit vector based on otg inst
unsigned int seamless_boot_odm_combine;
unsigned int force_odm_combine_4to1; //bit vector based on otg inst
int minimum_z8_residency_time;
bool disable_z9_mpc;
unsigned int force_fclk_khz;
bool enable_tri_buf;

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,
.minimum_z8_residency_time = 1000,
.psr_skip_crtc_disable = true,
.disable_dmcu = true,
.force_abm_enable = false,

3
drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
View File

@ -973,7 +973,8 @@ static enum dcn_zstate_support_state decide_zstate_support(struct dc *dc, struc
else if (context->stream_count == 1 && context->streams[0]->signal == SIGNAL_TYPE_EDP) {
struct dc_link *link = context->streams[0]->sink->link;
struct dc_stream_status *stream_status = &context->stream_status[0];
bool allow_z8 = context->bw_ctx.dml.vba.StutterPeriod > 1000.0;
int minmum_z8_residency = dc->debug.minimum_z8_residency_time > 0 ? dc->debug.minimum_z8_residency_time : 1000;
bool allow_z8 = context->bw_ctx.dml.vba.StutterPeriod > (double)minmum_z8_residency;
bool is_pwrseq0 = link->link_index == 0;
if (dc_extended_blank_supported(dc)) {