[PATCH v3 10/12] drm/msm/dpu: create additional virtual planes

[Dmitry Baryshkov]

Since we have enabled sharing of SSPP blocks between two planes, it is
now possible to use twice as much planes as there are hardware SSPP
blocks. Create additional overlay planes.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 5106abe366a3..a6cd1346b298 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -792,6 +792,18 @@ static int _dpu_kms_drm_obj_init(struct dpu_kms *dpu_kms)
 			primary_planes[primary_planes_idx++] = plane;
 	}
 
+	if (dpu_use_virtual_planes) {
+		for (i = 0; i < catalog->sspp_count; i++) {
+			plane = dpu_plane_init_virtual(dev, DRM_PLANE_TYPE_OVERLAY,
+						       (1UL << max_crtc_count) - 1);
+			if (IS_ERR(plane)) {
+				DPU_ERROR("dpu_plane_init failed\n");
+				ret = PTR_ERR(plane);
+				return ret;
+			}
+		}
+	}
+
 	max_crtc_count = min(max_crtc_count, primary_planes_idx);
 
 	/* Create one CRTC per encoder */
-- 
2.39.2