We cannot support both CWB and CDM simultaneously as this would require
2 CDM blocks and currently our hardware only supports 1 CDM block at
most.
Thus return an error if both CWB and CDM are enabled.
Signed-off-by: Jessica Zhang <quic_jessz...@quicinc.com>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index
9bb920d28bae2706b3892c167fe2bec3fd8857f4..a6372eee916e8aba702bbefc3615d8882ddcaad9
100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1261,6 +1261,10 @@ static int dpu_crtc_assign_resources(struct drm_crtc
*crtc, struct drm_crtc_stat
return 0;
topology = dpu_crtc_get_topology(crtc, dpu_kms, crtc_state);
+
+ if (topology.cwb_enabled && topology.needs_cdm)
+ return -EINVAL;
+
ret = dpu_rm_reserve(&dpu_kms->rm, global_state,
crtc, &topology);
if (ret)
--
2.34.1
