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drm/amd: Add debug mask for subviewport mclk switch

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[Why&How]
Expose a new dc debug mask enum to force a subviewport memory clock switch
to facilitate easy testing.

Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aurabindo Pillai 2022-06-28 17:26:35 -04:00 committed by Alex Deucher
parent c5da61cf5b
commit cfb979f717
2 changed files with 4 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -1560,6 +1560,9 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
if (amdgpu_dc_debug_mask & DC_DISABLE_CLOCK_GATING)
adev->dm.dc->debug.disable_clock_gate = true;
if (amdgpu_dc_debug_mask & DC_FORCE_SUBVP_MCLK_SWITCH)
adev->dm.dc->debug.force_subvp_mclk_switch = true;
r = dm_dmub_hw_init(adev);
if (r) {
DRM_ERROR("DMUB interface failed to initialize: status=%d\n", r);

1
drivers/gpu/drm/amd/include/amd_shared.h
View File

@ -248,6 +248,7 @@ enum DC_DEBUG_MASK {
DC_DISABLE_DSC = 0x4,
DC_DISABLE_CLOCK_GATING = 0x8,
DC_DISABLE_PSR = 0x10,
DC_FORCE_SUBVP_MCLK_SWITCH = 0x20,
};
enum amd_dpm_forced_level;