diff options
| author | Stylon Wang <[email protected]> | 2023-06-30 16:46:09 +0800 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2023-08-07 17:14:08 -0400 |
| commit | 7ce34cbfab26c04c969a32196fbba0f2c6191cb5 (patch) | |
| tree | b60a0b53d0cc80516b8318f0357a6d5b03b65fa3 | |
| parent | 71ba6b577a353fa880b2e5c85cdd780765c51fed (diff) | |
drm/amd/display: Enable DPIA trace with DC debug mask
[Why]
DPIA traces from DMUB is not enabled by default, which is
less convenient to debug DPIA related issues because we have
to resort to other means to enable DPIA trace.
[How]
Reuse existing DC debug mask to enable DPIA trace log from
kernel command line. This makes debugging DPIA issues easier
especially when system power state (suspend/reboot) is involved.
To turn on DPIA trace, simply add "amdgpu.dcdebugmask=0x80" to
kernel command line.
Reviewed-by: Aurabindo Pillai <[email protected]>
Acked-by: Tom Chung <[email protected]>
Signed-off-by: Stylon Wang <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index e3d3af0435ce..ae83275b6d5f 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1822,9 +1822,14 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) * It is expected that DMUB will resend any pending notifications at this point, for * example HPD from DPIA. */ - if (dc_is_dmub_outbox_supported(adev->dm.dc)) + if (dc_is_dmub_outbox_supported(adev->dm.dc)) { dc_enable_dmub_outbox(adev->dm.dc); + /* DPIA trace goes to dmesg logs only if outbox is enabled */ + if (amdgpu_dc_debug_mask & DC_ENABLE_DPIA_TRACE) + dc_dmub_srv_enable_dpia_trace(adev->dm.dc); + } + if (amdgpu_dm_initialize_drm_device(adev)) { DRM_ERROR( "amdgpu: failed to initialize sw for display support.\n"); |