disp: msm: sde: make sid programming optional

This change makes the access to sid registers space optional
as for lahaina target hlos is not supposed to access these
registers. Mapping this register space will be done only if
the device tree entry indicates this support.

Change-Id: I4ecefec0fe02c993ca34b55da432612e25eb6783
Signed-off-by: Abhijit Kulkarni <[email protected]>

msm/sde/sde_kms.c

@@ -2886,7 +2886,8 @@ static void sde_kms_init_shared_hw(struct sde_kms *sde_kms)
 		sde_kms->hw_mdp->ops.reset_ubwc(sde_kms->hw_mdp,
 						sde_kms->catalog);
 
-	sde_hw_sid_rotator_set(sde_kms->hw_sid);
+	if (sde_kms->sid)
+		sde_hw_sid_rotator_set(sde_kms->hw_sid);
 }
 
 static void _sde_kms_set_lutdma_vbif_remap(struct sde_kms *sde_kms)
@@ -3137,17 +3138,16 @@ static int _sde_kms_hw_init_ioremap(struct sde_kms *sde_kms,
 	sde_kms->sid = msm_ioremap(platformdev, "sid_phys",
 							"sid_phys");
 	if (IS_ERR(sde_kms->sid)) {
-		rc = PTR_ERR(sde_kms->sid);
-		SDE_ERROR("sid register memory map failed: %d\n", rc);
+		SDE_DEBUG("sid register is not defined: %d\n", rc);
 		sde_kms->sid = NULL;
-		goto error;
+	} else {
+		sde_kms->sid_len = msm_iomap_size(platformdev, "sid_phys");
+		rc =  sde_dbg_reg_register_base("sid", sde_kms->sid,
+				sde_kms->sid_len);
+		if (rc)
+			SDE_ERROR("dbg base register sid failed: %d\n", rc);
 	}
 
-	sde_kms->sid_len = msm_iomap_size(platformdev, "sid_phys");
-	rc =  sde_dbg_reg_register_base("sid", sde_kms->sid, sde_kms->sid_len);
-	if (rc)
-		SDE_ERROR("dbg base register sid failed: %d\n", rc);
-
 error:
 	return rc;
 }
@@ -3317,12 +3317,15 @@ static int _sde_kms_hw_init_blocks(struct sde_kms *sde_kms,
 		sde_kms->hw_uidle = NULL;
 	}
 
-	sde_kms->hw_sid = sde_hw_sid_init(sde_kms->sid,
+	if (sde_kms->sid) {
+		sde_kms->hw_sid = sde_hw_sid_init(sde_kms->sid,
 				sde_kms->sid_len, sde_kms->catalog);
-	if (IS_ERR(sde_kms->hw_sid)) {
-		SDE_ERROR("failed to init sid %ld\n", PTR_ERR(sde_kms->hw_sid));
-		sde_kms->hw_sid = NULL;
-		goto power_error;
+		if (IS_ERR_OR_NULL(sde_kms->hw_sid)) {
+			rc = PTR_ERR(sde_kms->hw_sid);
+			SDE_ERROR("failed to init sid %ld\n", rc);
+			sde_kms->hw_sid = NULL;
+			goto power_error;
+		}
 	}
 
 	rc = sde_core_perf_init(&sde_kms->perf, dev, sde_kms->catalog,