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    Subject[PATCH v6 1/3] device property: Introduce fwnode_get_name()
    Date
    This helper returns the name of the node.

    Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
    ---
    drivers/base/property.c | 17 +++++++++++++++++
    include/linux/fwnode.h | 3 +++
    include/linux/property.h | 2 ++
    3 files changed, 22 insertions(+)

    diff --git a/drivers/base/property.c b/drivers/base/property.c
    index 240cd0f40605..51a32bb27551 100644
    --- a/drivers/base/property.c
    +++ b/drivers/base/property.c
    @@ -679,6 +679,23 @@ void fwnode_handle_put(struct fwnode_handle *fwnode)
    }
    EXPORT_SYMBOL_GPL(fwnode_handle_put);

    +/**
    + * fwnode_get_name - Copy the name of an fwnode to a buffer
    + * @fwnode: Pointer to the node
    + * @buf: Buffer where the name is copied to
    + * @len: Size of the buffer
    + *
    + * Copies the node name of @fwnode to @buf. NOTE: @buf must be large enough to
    + * accommodate the name and trailing '\0'.
    + *
    + * Returns 0 on success or errno in case of an error.
    + */
    +int fwnode_get_name(const struct fwnode_handle *fwnode, char *buf, size_t len)
    +{
    + return fwnode_call_int_op(fwnode, get_name, buf, len);
    +}
    +EXPORT_SYMBOL_GPL(fwnode_get_name);
    +
    /**
    * fwnode_device_is_available - check if a device is available for use
    * @fwnode: Pointer to the fwnode of the device.
    diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
    index faebf0ca0686..a211b55a5da1 100644
    --- a/include/linux/fwnode.h
    +++ b/include/linux/fwnode.h
    @@ -52,6 +52,7 @@ struct fwnode_reference_args {
    * struct fwnode_operations - Operations for fwnode interface
    * @get: Get a reference to an fwnode.
    * @put: Put a reference to an fwnode.
    + * @get_name: Get the name of an fwnode
    * @device_get_match_data: Return the device driver match data.
    * @property_present: Return true if a property is present.
    * @property_read_integer_array: Read an array of integer properties. Return
    @@ -72,6 +73,8 @@ struct fwnode_reference_args {
    struct fwnode_operations {
    struct fwnode_handle *(*get)(struct fwnode_handle *fwnode);
    void (*put)(struct fwnode_handle *fwnode);
    + int (*get_name)(const struct fwnode_handle *fwnode, char *buf,
    + size_t len);
    bool (*device_is_available)(const struct fwnode_handle *fwnode);
    const void *(*device_get_match_data)(const struct fwnode_handle *fwnode,
    const struct device *dev);
    diff --git a/include/linux/property.h b/include/linux/property.h
    index 3789ec755fb6..14369f36b0b1 100644
    --- a/include/linux/property.h
    +++ b/include/linux/property.h
    @@ -109,6 +109,8 @@ struct fwnode_handle *device_get_named_child_node(struct device *dev,
    struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
    void fwnode_handle_put(struct fwnode_handle *fwnode);

    +int fwnode_get_name(const struct fwnode_handle *fwnode, char *name, size_t len);
    +
    int fwnode_irq_get(struct fwnode_handle *fwnode, unsigned int index);

    unsigned int device_get_child_node_count(struct device *dev);
    --
    2.19.2
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