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drm/amd/display: Add DC Debug mask to disable features for bringup

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[Why]
At bringup we want to be able to disable various power features.

[How]
These features are already exposed as dc_debug_options and exercised
on other OSes. Create a new dc_debug_mask module parameter and expose
relevant bits, in particular
 * DC_DISABLE_PIPE_SPLIT
 * DC_DISABLE_STUTTER
 * DC_DISABLE_DSC
 * DC_DISABLE_CLOCK_GATING

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry Wentland
2020-05-01 14:23:37 -04:00
committed by Alex Deucher
vanhempi 9f76f7e878
commit 8a791dabea
4 muutettua tiedostoa jossa 30 lisäystä ja 0 poistoa
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14
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -918,6 +918,20 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
goto error;
}
if (amdgpu_dc_debug_mask & DC_DISABLE_PIPE_SPLIT) {
adev->dm.dc->debug.force_single_disp_pipe_split = false;
adev->dm.dc->debug.pipe_split_policy = MPC_SPLIT_AVOID;
}
if (amdgpu_dc_debug_mask & DC_DISABLE_STUTTER)
adev->dm.dc->debug.disable_stutter = true;
if (amdgpu_dc_debug_mask & DC_DISABLE_DSC)
adev->dm.dc->debug.disable_dsc = true;
if (amdgpu_dc_debug_mask & DC_DISABLE_CLOCK_GATING)
adev->dm.dc->debug.disable_clock_gate = true;
r = dm_dmub_hw_init(adev);
if (r) {
DRM_ERROR("DMUB interface failed to initialize: status=%d\n", r);