diff options
| author | Harry Wentland <harry.wentland@amd.com> | 2017-12-07 14:09:15 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-19 14:17:26 -0500 |
| commit | a39438f0b9261a249da6d5957c03e1fab699f467 (patch) | |
| tree | d60f288ad1a691e05bff266a503936dc9d7b3be2 /drivers/gpu | |
| parent | 25292028d74b4b13ab512bcac60a5e02e2a48b90 (diff) | |
| download | lwn-a39438f0b9261a249da6d5957c03e1fab699f467.tar.gz lwn-a39438f0b9261a249da6d5957c03e1fab699f467.zip | |
drm/amd/display: Debug print when validate_stream fails
It might be good to understand why validate fails.
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 |
1 files changed, 9 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 da78ff495b53..a7d8634d2df3 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2801,6 +2801,7 @@ int amdgpu_dm_connector_mode_valid(struct drm_connector *connector, /* TODO: Unhardcode stream count */ struct dc_stream_state *stream; struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); + enum dc_status dc_result = DC_OK; if ((mode->flags & DRM_MODE_FLAG_INTERLACE) || (mode->flags & DRM_MODE_FLAG_DBLSCAN)) @@ -2833,8 +2834,15 @@ int amdgpu_dm_connector_mode_valid(struct drm_connector *connector, stream->src.height = mode->vdisplay; stream->dst = stream->src; - if (dc_validate_stream(adev->dm.dc, stream) == DC_OK) + dc_result = dc_validate_stream(adev->dm.dc, stream); + + if (dc_result == DC_OK) result = MODE_OK; + else + DRM_DEBUG_KMS("Mode %dx%d (clk %d) failed DC validation\n", + mode->vdisplay, + mode->hdisplay, + mode->clock); dc_stream_release(stream); |