It might be good to understand why validate fails.
Signed-off-by: Harry Wentland <harry.wentland at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Harry Wentland <harry.wentland at amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
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 6fc4ded80b19..5590ef80e644 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2832,6 +2832,7 @@ 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))
@@ -2864,8 +2865,15 @@ 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);
--
2.14.1
