msm: camera: common: Reinstate API to check memory types

Add back in check for ddr memory type to distinguish between DDR4/5
memory types.

CRs-fixed: 3136181
Change-Id: Ia152cde2786bf6e3da172d2b7046f9871d4f8e3c
Signed-off-by: Karthik Jayakumar <[email protected]>
Signed-off-by: Wasim Khan <[email protected]>

drivers/cam_utils/cam_compat.c

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2014-2021, The Linux Foundation. All rights reserved.
- * copyright (c) 2022, Qulacomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/dma-mapping.h>
@@ -364,14 +364,6 @@ void cam_compat_util_put_dmabuf_va(struct dma_buf *dmabuf, void *vaddr)
 
 	dma_buf_vunmap(dmabuf, &mapping);
 }
-
-int cam_get_ddr_type(void)
-{
-	/* We assume all chipsets running kernel version 5.15+
-	 * to be using only DDR5 based memory.
-	 */
-	return DDR_TYPE_LPDDR5;
-}
 #else
 void cam_smmu_util_iommu_custom(struct device *dev,
 	dma_addr_t discard_start, size_t discard_length)
@@ -410,9 +402,4 @@ void cam_compat_util_put_dmabuf_va(struct dma_buf *dmabuf, void *vaddr)
 {
 	dma_buf_vunmap(dmabuf, vaddr);
 }
-
-int cam_get_ddr_type(void)
-{
-	return of_fdt_get_ddrtype();
-}
 #endif

drivers/cam_utils/cam_compat.h

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (c) 2014-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #ifndef _CAM_COMPAT_H_
@@ -13,6 +14,7 @@
 #include <linux/qcom_scm.h>
 #include <linux/list_sort.h>
 #include <linux/dma-iommu.h>
+#include <soc/qcom/of_common.h>
 
 #include "cam_csiphy_dev.h"
 #include "cam_cpastop_hw.h"
@@ -47,7 +49,7 @@ int cam_csiphy_notify_secure_mode(struct csiphy_device *csiphy_dev,
 void cam_free_clear(const void *);
 void cam_check_iommu_faults(struct iommu_domain *domain,
 	struct cam_smmu_pf_info *pf_info);
-int cam_get_ddr_type(void);
+static inline int cam_get_ddr_type(void) { return of_fdt_get_ddrtype(); }
 int cam_compat_util_get_dmabuf_va(struct dma_buf *dmabuf, uintptr_t *vaddr);
 void cam_compat_util_put_dmabuf_va(struct dma_buf *dmabuf, void *vaddr);
 void cam_smmu_util_iommu_custom(struct device *dev,