msm: camera: common: Optimize the name of some functions

Optimize the names of some functions and add declaration
for them in head file.

CRs-Fixed: 3164829
Change-Id: Ia10ab83e0b6164a82fdd21b351477294bf4bbe4b
Signed-off-by: mingpan <[email protected]>

drivers/cam_req_mgr/cam_mem_mgr.c

@@ -1860,7 +1860,7 @@ struct dma_buf *cam_mem_mgr_get_dma_buf(int fd)
 	return dmabuf;
 }
 
-int cam_presil_put_dmabuf_from_fd(uint64_t input_dmabuf)
+int cam_mem_mgr_put_dmabuf_from_fd(uint64_t input_dmabuf)
 {
 	struct dma_buf *dmabuf = (struct dma_buf *)(uint64_t)input_dmabuf;
 	int idx = 0;
@@ -1889,9 +1889,8 @@ int cam_presil_put_dmabuf_from_fd(uint64_t input_dmabuf)
 
 	return 0;
 }
-EXPORT_SYMBOL(cam_presil_put_dmabuf_from_fd);
 
-int cam_presil_get_fd_from_dmabuf(uint64_t input_dmabuf)
+int cam_mem_mgr_get_fd_from_dmabuf(uint64_t input_dmabuf)
 {
 	int fd_for_dmabuf = -1;
 	struct dma_buf *dmabuf = (struct dma_buf *)(uint64_t)input_dmabuf;
@@ -1942,7 +1941,6 @@ int cam_presil_get_fd_from_dmabuf(uint64_t input_dmabuf)
 
 	return (int)fd_for_dmabuf;
 }
-EXPORT_SYMBOL(cam_presil_get_fd_from_dmabuf);
 
 int cam_mem_mgr_send_buffer_to_presil(int32_t iommu_hdl, int32_t buf_handle)
 {

drivers/cam_req_mgr/cam_mem_mgr.h

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #ifndef _CAM_MEM_MGR_H_
@@ -181,6 +182,23 @@ int cam_mem_mgr_init(void);
  */
 void cam_mem_mgr_deinit(void);
 
+#ifdef CONFIG_CAM_PRESIL
+/**
+ * @brief: Put dma-buf for input dmabuf
+ *
+ * @return Status of operation. Negative in case of error. Zero otherwise.
+ */
+int cam_mem_mgr_put_dmabuf_from_fd(uint64_t input_dmabuf);
+
+/**
+ * @brief: Create a fd for dma-buf
+ *
+ * @return Status of operation. Negative in case of error. Zero or
+ *       Positive otherwise.
+ */
+int cam_mem_mgr_get_fd_from_dmabuf(uint64_t input_dmabuf);
+#endif /* ifdef CONFIG_CAM_PRESIL */
+
 /**
  * @brief: Copy buffer content to presil mem for all buffers of
  *       iommu handle