msm: camera: smmu: Move to ioremap APIs for using FW memory

When loading the camera FW, use the appropriate APIs
depending on the kernel version to map the FW region.

CRs-Fixed: 2564857
Change-Id: I2104b63b54bce799c8e44f36c49042de86f78c7e
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
Signed-off-by: Karthik Jayakumar <kjayakum@codeaurora.org>

drivers/cam_utils/cam_compat.h

@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2014-2019, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _CAM_COMPAT_H_
+#define _CAM_COMPAT_H_
+
+#include <linux/version.h>
+
+#if KERNEL_VERSION(5, 4, 0) >= LINUX_VERSION_CODE
+
+#include <linux/msm_ion.h>
+#include <linux/ion.h>
+
+#else
+
+#include <linux/msm_ion.h>
+#include <linux/ion_kernel.h>
+
+#endif
+
+struct cam_fw_alloc_info {
+	struct device *fw_dev;
+	void          *fw_kva;
+	uint64_t       fw_hdl;
+};
+
+int cam_reserve_icp_fw(struct cam_fw_alloc_info *icp_fw, size_t fw_length);
+void cam_unreserve_icp_fw(struct cam_fw_alloc_info *icp_fw, size_t fw_length);
+
+#endif /* _CAM_COMPAT_H_ */