diff mbox series

[2/4] nvmem: core: add nvmem_dev_size() helper

Message ID 20231218133722.16150-2-zajec5@gmail.com
State New
Headers show
Series [1/4] dt-bindings: nvmem: layouts: add U-Boot environment variables layout | expand

Commit Message

Rafał Miłecki Dec. 18, 2023, 1:37 p.m. UTC 
From: Rafał Miłecki <rafal@milecki.pl>

This is required by layouts that need to read whole NVMEM content. It's
especially useful for NVMEM devices without hardcoded layout (like
U-Boot environment data block).

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

Comments

Miquel Raynal Dec. 18, 2023, 2:03 p.m. UTC | #1 
Hi Rafał,

zajec5@gmail.com wrote on Mon, 18 Dec 2023 14:37:20 +0100:

> From: Rafał Miłecki <rafal@milecki.pl>
> 
> This is required by layouts that need to read whole NVMEM content. It's
> especially useful for NVMEM devices without hardcoded layout (like
> U-Boot environment data block).

Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>

> 
> Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

Thanks,
Miquèl
diff mbox series

Patch

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index ba559e81f77f..1b08bb072f86 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -2176,6 +2176,19 @@  const char *nvmem_dev_name(struct nvmem_device *nvmem)
 }
 EXPORT_SYMBOL_GPL(nvmem_dev_name);
 
+/**
+ * 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);
+
 static int __init nvmem_init(void)
 {
 	int ret;
diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
index 2d306fa13b1a..34c0e58dfa26 100644
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -81,6 +81,7 @@  int nvmem_device_cell_write(struct nvmem_device *nvmem,
 			    struct nvmem_cell_info *info, void *buf);
 
 const char *nvmem_dev_name(struct nvmem_device *nvmem);
+size_t nvmem_dev_size(struct nvmem_device *nvmem);
 
 void nvmem_add_cell_lookups(struct nvmem_cell_lookup *entries,
 			    size_t nentries);