remoteproc: introduce rproc_add_carveout function

This patch introduces a new API to allow platform driver to register
platform specific carveout regions.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/remoteproc/remoteproc_core.c

@@ -747,7 +747,7 @@ static int rproc_handle_carveout(struct rproc *rproc,
 	if (!carveout)
 		goto free_carv;
 
-	list_add_tail(&carveout->node, &rproc->carveouts);
+	rproc_add_carveout(rproc, carveout);
 
 	return 0;
 
@@ -760,6 +760,20 @@ dma_free:
 	return ret;
 }
 
+/**
+ * rproc_add_carveout() - register an allocated carveout region
+ * @rproc: rproc handle
+ * @mem: memory entry to register
+ *
+ * This function registers specified memory entry in @rproc carveouts list.
+ * Specified carveout should have been allocated before registering.
+ */
+void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem)
+{
+	list_add_tail(&mem->node, &rproc->carveouts);
+}
+EXPORT_SYMBOL(rproc_add_carveout);
+
 /**
  * rproc_mem_entry_init() - allocate and initialize rproc_mem_entry struct
  * @dev: pointer on device struct

include/linux/remoteproc.h

@@ -559,6 +559,8 @@ int rproc_add(struct rproc *rproc);
 int rproc_del(struct rproc *rproc);
 void rproc_free(struct rproc *rproc);
 
+void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem);
+
 struct rproc_mem_entry *
 rproc_mem_entry_init(struct device *dev,
 		     void *va, dma_addr_t dma, int len, u32 da,