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-rw-r--r--drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c21
-rw-r--r--drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c1
-rw-r--r--drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h2
3 files changed, 21 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index f96e142c4361..8a6e0718bc17 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -58,7 +58,7 @@
#define IDLE_SHORT_TIMEOUT 1
-#define MAX_VDISPLAY_SPLIT 1080
+#define MAX_HDISPLAY_SPLIT 1080
/* timeout in frames waiting for frame done */
#define DPU_ENCODER_FRAME_DONE_TIMEOUT_FRAMES 5
@@ -534,8 +534,23 @@ static struct msm_display_topology dpu_encoder_get_topology(
if (dpu_enc->phys_encs[i])
intf_count++;
- /* User split topology for width > 1080 */
- topology.num_lm = (mode->vdisplay > MAX_VDISPLAY_SPLIT) ? 2 : 1;
+ /* Datapath topology selection
+ *
+ * Dual display
+ * 2 LM, 2 INTF ( Split display using 2 interfaces)
+ *
+ * Single display
+ * 1 LM, 1 INTF
+ * 2 LM, 1 INTF (stream merge to support high resolution interfaces)
+ *
+ */
+ if (intf_count == 2)
+ topology.num_lm = 2;
+ else if (!dpu_kms->catalog->caps->has_3d_merge)
+ topology.num_lm = 1;
+ else
+ topology.num_lm = (mode->hdisplay > MAX_HDISPLAY_SPLIT) ? 2 : 1;
+
topology.num_enc = 0;
topology.num_intf = intf_count;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
index e4880a1c0b07..69de2c3e9650 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -67,6 +67,7 @@ static const struct dpu_caps sdm845_dpu_caps = {
.has_src_split = true,
.has_dim_layer = true,
.has_idle_pc = true,
+ .has_3d_merge = true,
};
static const struct dpu_caps sc7180_dpu_caps = {
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
index e052360689a5..8ff532a6f0cc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
@@ -287,6 +287,7 @@ struct dpu_qos_lut_tbl {
* @has_src_split source split feature status
* @has_dim_layer dim layer feature status
* @has_idle_pc indicate if idle power collapse feature is supported
+ * @has_3d_merge indicate if 3D merge is supported
*/
struct dpu_caps {
u32 max_mixer_width;
@@ -297,6 +298,7 @@ struct dpu_caps {
bool has_src_split;
bool has_dim_layer;
bool has_idle_pc;
+ bool has_3d_merge;
};
/**