[PATCH 7/8] soc: qcom: mdt_loader: remove qcom_mdt_load()

[Mukesh Ojha]

All callers have been migrated to qcom_mdt_pas_load(), which takes an
explicit qcom_pas_context instead of a raw pas_id and delegates memory
setup to the context.  Remove the now-unused qcom_mdt_load() wrapper
along with its EXPORT_SYMBOL_GPL and header declaration.

Signed-off-by: Mukesh Ojha <mukesh.ojha@xxxxxxxxxxxxxxxx>
---
 drivers/soc/qcom/mdt_loader.c       | 59 ++++++++++-------------------
 include/linux/soc/qcom/mdt_loader.h | 12 ------
 2 files changed, 19 insertions(+), 52 deletions(-)

diff --git a/drivers/soc/qcom/mdt_loader.c b/drivers/soc/qcom/mdt_loader.c
index 002100fe2d32..1c7b5906f6ae 100644
--- a/drivers/soc/qcom/mdt_loader.c
+++ b/drivers/soc/qcom/mdt_loader.c
@@ -326,7 +326,8 @@ static bool qcom_mdt_bins_are_split(const struct firmware *fw)
  * @dev:	device handle to associate resources with
  * @fw:		firmware object for the mdt file
  * @fw_name:	name of the firmware, for construction of segment file names
- * @mem_region:	allocated memory region to load firmware into
+ * @mem_region:	virtual address of the memory region to load firmware into,
+ *		or NULL to have the region mapped internally with ioremap_wc()
  * @mem_phys:	physical address of allocated memory region
  * @mem_size:	size of the allocated memory region
  * @reloc_base:	adjusted physical address after relocation
@@ -341,6 +342,7 @@ int qcom_mdt_load_no_init(struct device *dev, const struct firmware *fw,
 	const struct elf32_phdr *phdrs;
 	const struct elf32_phdr *phdr;
 	const struct elf32_hdr *ehdr;
+	void __iomem *mapped = NULL;
 	phys_addr_t mem_reloc;
 	phys_addr_t min_addr = PHYS_ADDR_MAX;
 	ssize_t offset;
@@ -350,12 +352,22 @@ int qcom_mdt_load_no_init(struct device *dev, const struct firmware *fw,
 	int ret = 0;
 	int i;
 
-	if (!fw || !mem_region || !mem_phys || !mem_size)
+	if (!fw || !mem_phys || !mem_size)
 		return -EINVAL;
 
 	if (!mdt_header_valid(fw))
 		return -EINVAL;
 
+	if (!mem_region) {
+		mapped = ioremap_wc(mem_phys, mem_size);
+		if (!mapped) {
+			dev_err(dev, "unable to map memory region: %pa+%zx\n",
+				&mem_phys, mem_size);
+			return -ENOMEM;
+		}
+		mem_region = (__force void *)mapped;
+	}
+
 	is_split = qcom_mdt_bins_are_split(fw);
 	ehdr = (struct elf32_hdr *)fw->data;
 	phdrs = (struct elf32_phdr *)(fw->data + ehdr->e_phoff);
@@ -434,39 +446,13 @@ int qcom_mdt_load_no_init(struct device *dev, const struct firmware *fw,
 	if (reloc_base)
 		*reloc_base = mem_reloc;
 
+	if (mapped)
+		iounmap(mapped);
+
 	return ret;
 }
 EXPORT_SYMBOL_GPL(qcom_mdt_load_no_init);
 
-/**
- * qcom_mdt_load() - load the firmware which header is loaded as fw
- * @dev:	device handle to associate resources with
- * @fw:		firmware object for the mdt file
- * @fw_name:	name of the firmware, for construction of segment file names
- * @pas_id:	PAS identifier
- * @mem_region:	allocated memory region to load firmware into
- * @mem_phys:	physical address of allocated memory region
- * @mem_size:	size of the allocated memory region
- * @reloc_base:	adjusted physical address after relocation
- *
- * Returns 0 on success, negative errno otherwise.
- */
-int qcom_mdt_load(struct device *dev, const struct firmware *fw,
-		  const char *fw_name, int pas_id, void *mem_region,
-		  phys_addr_t mem_phys, size_t mem_size,
-		  phys_addr_t *reloc_base)
-{
-	int ret;
-
-	ret = __qcom_mdt_pas_init(dev, fw, fw_name, pas_id, mem_phys, NULL);
-	if (ret)
-		return ret;
-
-	return qcom_mdt_load_no_init(dev, fw, fw_name, mem_region, mem_phys,
-				     mem_size, reloc_base);
-}
-EXPORT_SYMBOL_GPL(qcom_mdt_load);
-
 /**
  * qcom_mdt_pas_load - Loads and authenticates the metadata of the firmware
  * (typically contained in the .mdt file), followed by loading the actual
@@ -486,21 +472,14 @@ EXPORT_SYMBOL_GPL(qcom_mdt_load);
 int qcom_mdt_pas_load(struct qcom_pas_context *ctx, const struct firmware *fw,
 		      const char *firmware, phys_addr_t *reloc_base)
 {
-	void __iomem *mem_region;
 	int ret;
 
 	ret = __qcom_mdt_pas_init(ctx->dev, fw, firmware, ctx->pas_id, ctx->mem_phys, ctx);
 	if (ret)
 		return ret;
 
-	mem_region = qcom_pas_ctx_map(ctx);
-	if (!mem_region)
-		return -ENOMEM;
-
-	ret = qcom_mdt_load_no_init(ctx->dev, fw, firmware, (__force void *)mem_region,
-				    ctx->mem_phys, ctx->mem_size, reloc_base);
-	iounmap(mem_region);
-	return ret;
+	return qcom_mdt_load_no_init(ctx->dev, fw, firmware, NULL,
+				     ctx->mem_phys, ctx->mem_size, reloc_base);
 }
 EXPORT_SYMBOL_GPL(qcom_mdt_pas_load);
 
diff --git a/include/linux/soc/qcom/mdt_loader.h b/include/linux/soc/qcom/mdt_loader.h
index 74886f772d46..f49de7b388bc 100644
--- a/include/linux/soc/qcom/mdt_loader.h
+++ b/include/linux/soc/qcom/mdt_loader.h
@@ -15,10 +15,6 @@ struct qcom_pas_context;
 #if IS_ENABLED(CONFIG_QCOM_MDT_LOADER)
 
 ssize_t qcom_mdt_get_size(const struct firmware *fw);
-int qcom_mdt_load(struct device *dev, const struct firmware *fw,
-		  const char *fw_name, int pas_id, void *mem_region,
-		  phys_addr_t mem_phys, size_t mem_size,
-		  phys_addr_t *reloc_base);
 
 int qcom_mdt_pas_load(struct qcom_pas_context *ctx, const struct firmware *fw,
 		      const char *firmware, phys_addr_t *reloc_base);
@@ -37,14 +33,6 @@ static inline ssize_t qcom_mdt_get_size(const struct firmware *fw)
 	return -ENODEV;
 }
 
-static inline int qcom_mdt_load(struct device *dev, const struct firmware *fw,
-				const char *fw_name, int pas_id,
-				void *mem_region, phys_addr_t mem_phys,
-				size_t mem_size, phys_addr_t *reloc_base)
-{
-	return -ENODEV;
-}
-
 static inline int qcom_mdt_pas_load(struct qcom_pas_context *ctx,
 				    const struct firmware *fw, const char *firmware,
 				    phys_addr_t *reloc_base)
-- 
2.55.0