[PATCH V3 1/6] nvmem: core: add nvmem_dev_size() helper

Rafał Miłecki
2023-01-27T12:57:24Z

This is required by layouts that need to read whole NVMEM space. It
applies to NVMEM devices without hardcoded layout (like U-Boot
environment data block).

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
V2: Drop "const" from "const size_t"
---
drivers/nvmem/core.c | 13 +++++++++++++
include/linux/nvmem-consumer.h | 1 +
2 files changed, 14 insertions(+)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 38a5728bc65c..9e77af0164aa 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -2063,6 +2063,19 @@ void nvmem_del_cell_lookups(struct nvmem_cell_lookup *entries, size_t nentries)
}
EXPORT_SYMBOL_GPL(nvmem_del_cell_lookups);

+/**
+ * nvmem_dev_size() - Get the size of a given nvmem device.
+ *
+ * @nvmem: nvmem device.
+ *
+ * Return: size of the nvmem device.
+ */
+size_t nvmem_dev_size(struct nvmem_device *nvmem)
+{
+ return nvmem->size;
+}
+EXPORT_SYMBOL_GPL(nvmem_dev_size);
+
/**
* nvmem_dev_name() - Get the name of a given nvmem device.
*
diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
index fa030d93b768..c3005ab6cc4f 100644
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -78,6 +78,7 @@ ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem,
int nvmem_device_cell_write(struct nvmem_device *nvmem,
struct nvmem_cell_info *info, void *buf);

+size_t nvmem_dev_size(struct nvmem_device *nvmem);
const char *nvmem_dev_name(struct nvmem_device *nvmem);

void nvmem_add_cell_lookups(struct nvmem_cell_lookup *entries,
--
2.34.1