msm: camera: smmu: Moves custom smmu API's to cam_compat

Moves custom smmu API's to cam_compat as some of them are legacy and
will not be supported in newer kernel versions.

CRs-Fixed: 3048249
Change-Id: Ic9db5d9d295eb02e8bd2d593721b65e30d605f72
Signed-off-by: Karthik Jayakumar <kjayakum@codeaurora.org>

drivers/cam_utils/cam_compat.c

@@ -294,6 +294,12 @@ static int inline cam_subdev_list_cmp(struct cam_subdev *entry_1, struct cam_sub
 }
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0)
+void cam_smmu_util_iommu_custom(struct device *dev,
+	dma_addr_t discard_start, size_t discard_length)
+{
+	return;
+}
+
 int cam_req_mgr_ordered_list_cmp(void *priv,
 	const struct list_head *head_1, const struct list_head *head_2)
 {
@@ -323,6 +329,17 @@ int cam_get_ddr_type(void)
 	return DDR_TYPE_LPDDR5;
 }
 #else
+void cam_smmu_util_iommu_custom(struct device *dev,
+	dma_addr_t discard_start, size_t discard_length)
+{
+	iommu_dma_enable_best_fit_algo(dev);
+
+	if (discard_start)
+		iommu_dma_reserve_iova(dev, discard_start, discard_length);
+
+	return;
+}
+
 int cam_req_mgr_ordered_list_cmp(void *priv,
 	struct list_head *head_1, struct list_head *head_2)
 {