[PATCH v4 11/13] 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 becdd98f3c40..feb4d3bae0cf 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -790,6 +790,18 @@ 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