media: camss: Collect information about a number of lite VFEs

VFE lite IPs are found on CAMSS with TITAN_TOP power domains, and in
some aspects these types of VFEs are different, in particular there
is no need to enable VFE power domains to operate over VFE lite IPs.

Signed-off-by: Vladimir Zapolskiy <[e-mail]>
Reviewed-by: Robert Foss <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/qcom/camss/camss.c

···
 	}
 
 	/* note: SM8250 requires VFE to be initialized before CSID */
-	for (i = 0; i < camss->vfe_num; i++) {
+	for (i = 0; i < camss->vfe_num + camss->vfe_lite_num; i++) {
 		ret = msm_vfe_subdev_init(camss, &camss->vfe[i],
 					  &vfe_res[i], i);
 		if (ret < 0) {
···
 		goto err_reg_ispif;
 	}
 
-	for (i = 0; i < camss->vfe_num; i++) {
+	for (i = 0; i < camss->vfe_num + camss->vfe_lite_num; i++) {
 		ret = msm_vfe_register_entities(&camss->vfe[i],
 						&camss->v4l2_dev);
 		if (ret < 0) {
···
 				}
 	} else {
 		for (i = 0; i < camss->csid_num; i++)
-			for (k = 0; k < camss->vfe_num; k++)
+			for (k = 0; k < camss->vfe_num + camss->vfe_lite_num; k++)
 				for (j = 0; j < camss->vfe[k].line_num; j++) {
 					struct v4l2_subdev *csid = &camss->csid[i].subdev;
 					struct v4l2_subdev *vfe = &camss->vfe[k].line[j].subdev;
···
 	return 0;
 
 err_link:
-	i = camss->vfe_num;
+	i = camss->vfe_num + camss->vfe_lite_num;
 err_reg_vfe:
 	for (i--; i >= 0; i--)
 		msm_vfe_unregister_entities(&camss->vfe[i]);
···
 
 	msm_ispif_unregister_entities(camss->ispif);
 
-	for (i = 0; i < camss->vfe_num; i++)
+	for (i = 0; i < camss->vfe_num + camss->vfe_lite_num; i++)
 		msm_vfe_unregister_entities(&camss->vfe[i]);
 }
 
···
 		camss->version = CAMSS_845;
 		camss->csiphy_num = 4;
 		camss->csid_num = 3;
-		camss->vfe_num = 3;
+		camss->vfe_num = 2;
+		camss->vfe_lite_num = 1;
 	} else if (of_device_is_compatible(dev->of_node,
 					   "qcom,sm8250-camss")) {
 		camss->version = CAMSS_8250;
 		camss->csiphy_num = 6;
 		camss->csid_num = 4;
-		camss->vfe_num = 4;
+		camss->vfe_num = 2;
+		camss->vfe_lite_num = 2;
 	} else {
 		return -EINVAL;
 	}
···
 			return -ENOMEM;
 	}
 
-	camss->vfe = devm_kcalloc(dev, camss->vfe_num, sizeof(*camss->vfe),
-				  GFP_KERNEL);
+	camss->vfe = devm_kcalloc(dev, camss->vfe_num + camss->vfe_lite_num,
+				  sizeof(*camss->vfe), GFP_KERNEL);
 	if (!camss->vfe)
 		return -ENOMEM;
 

drivers/media/platform/qcom/camss/camss.h

···
 	struct csid_device *csid;
 	struct ispif_device *ispif;
 	int vfe_num;
+	int vfe_lite_num;
 	struct vfe_device *vfe;
 	atomic_t ref_count;
 	int genpd_num;