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drm/amd/display: add debug option for z9 disable interface

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[Why]
To help triage issues and coordinate driver/bios release dependency

[How]
Only enable the new Z9 interface when debug option is set, otherwise
treat Z10 only support case as Zstate disallowed.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Yang 2022-01-23 13:20:21 -05:00 committed by Alex Deucher
parent 85b8f62b56
commit b5d9a48368
3 changed files with 7 additions and 1 deletions
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6
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_smu.c
View File

@ -308,12 +308,16 @@ void dcn31_smu_transfer_wm_table_dram_2_smu(struct clk_mgr_internal *clk_mgr)
void dcn31_smu_set_zstate_support(struct clk_mgr_internal *clk_mgr, enum dcn_zstate_support_state support)
{
//TODO: Work with smu team to define optimization options.
unsigned int msg_id, param;
if (!clk_mgr->smu_present)
return;
if (!clk_mgr->base.ctx->dc->debug.enable_z9_disable_interface &&
(support == DCN_ZSTATE_SUPPORT_ALLOW_Z10_ONLY))
support = DCN_ZSTATE_SUPPORT_DISALLOW;
if (support == DCN_ZSTATE_SUPPORT_ALLOW_Z10_ONLY)
param = 1;
else

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

@ -703,6 +703,7 @@ struct dc_debug_options {
int crb_alloc_policy_min_disp_count;
#if defined(CONFIG_DRM_AMD_DC_DCN)
bool disable_z10;
bool enable_z9_disable_interface;
bool enable_sw_cntl_psr;
union dpia_debug_options dpia_debug;
#endif

1
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
View File

@ -1033,6 +1033,7 @@ static const struct dc_debug_options debug_defaults_drv = {
.optimize_edp_link_rate = true,
.enable_sw_cntl_psr = true,
.apply_vendor_specific_lttpr_wa = true,
.enable_z9_disable_interface = false
};
static const struct dc_debug_options debug_defaults_diags = {