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drm/amd/display: Add feature flags to disable LTTPR

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[Why]
Allow for disabling non transparent mode of LTTPR for running tests.

[How]
Add a feature flag and set them during init sequence. The flags are
already being used in DC.

Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aurabindo Pillai 2021-12-07 12:14:40 -05:00 committed by Alex Deucher
parent 655ff3538e
commit 1232027449
2 changed files with 9 additions and 0 deletions
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7
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -1453,6 +1453,13 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
if (amdgpu_dc_feature_mask & DC_EDP_NO_POWER_SEQUENCING)
init_data.flags.edp_no_power_sequencing = true;
#ifdef CONFIG_DRM_AMD_DC_DCN
if (amdgpu_dc_feature_mask & DC_DISABLE_LTTPR_DP1_4A)
init_data.flags.allow_lttpr_non_transparent_mode.bits.DP1_4A = true;
if (amdgpu_dc_feature_mask & DC_DISABLE_LTTPR_DP2_0)
init_data.flags.allow_lttpr_non_transparent_mode.bits.DP2_0 = true;
#endif
init_data.flags.power_down_display_on_boot = true;
if (check_seamless_boot_capability(adev)) {

2
drivers/gpu/drm/amd/include/amd_shared.h
View File

@ -231,6 +231,8 @@ enum DC_FEATURE_MASK {
DC_DISABLE_FRACTIONAL_PWM_MASK = (1 << 2), //0x4, disabled by default
DC_PSR_MASK = (1 << 3), //0x8, disabled by default for dcn < 3.1
DC_EDP_NO_POWER_SEQUENCING = (1 << 4), //0x10, disabled by default
DC_DISABLE_LTTPR_DP1_4A = (1 << 5), //0x20, disabled by default
DC_DISABLE_LTTPR_DP2_0 = (1 << 6), //0x40, disabled by default
};
enum DC_DEBUG_MASK {