On 15.11.24 12:57, Ahmad Fatoum wrote:
> The existing of_find_device and of_find_path helpers require that
> barebox has already probed devices. For use in code where this
> assumption doesn't always hold true, let's add helpers that return
> the alias if it exists.
>
> Signed-off-by: Ahmad Fatoum <[email protected]>
Please dismiss. Forgot to squash fixups :/
> ---
> drivers/of/base.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++
> include/of.h | 32 ++++++++++++++++++++++++++
> 2 files changed, 89 insertions(+)
>
> diff --git a/drivers/of/base.c b/drivers/of/base.c
> index 960a9327aed2..0d04bd3ce25b 100644
> --- a/drivers/of/base.c
> +++ b/drivers/of/base.c
> @@ -318,6 +318,63 @@ const char *of_alias_get(struct device_node *np)
> }
> EXPORT_SYMBOL_GPL(of_alias_get);
>
> +static const char *of_get_partition_device_alias(struct device_node *np)
> +{
> + const char *alias;
> +
> + alias = of_alias_get(np);
> + if (alias)
> + return alias;
> +
> + np = of_get_parent(np);
> + if (np && of_device_is_compatible(np, "fixed-partitions"))
> + np = of_get_parent(np);
> +
> + return of_alias_get(np);
> +}
> +
> +const char *of_property_get_alias_from(struct device_node *root,
> + const char *np_name, const char
> *propname,
> + int index)
> +{
> + struct device_node *node, *rnode;
> + const char *path;
> + int ret;
> +
> + node = of_find_node_by_path_or_alias(root, np_name);
> + if (!node)
> + return NULL;
> +
> + ret = of_property_read_string_index(root, propname, index, &path);
> + if (ret < 0)
> + return NULL;
> +
> + rnode = of_find_node_by_path(path);
> + if (!rnode)
> + return NULL;
> +
> + return of_get_partition_device_alias(rnode);
> +}
> +EXPORT_SYMBOL_GPL(of_property_get_alias_from);
> +
> +const char *of_parse_phandle_and_get_alias_from(struct device_node *root,
> + const char *np_name, const char
> *phandle_name,
> + int index)
> +{
> + struct device_node *node, *rnode;
> +
> + node = of_find_node_by_path_or_alias(root, np_name);
> + if (!node)
> + return NULL;
> +
> + rnode = of_parse_phandle_from(node, root, phandle_name, index);
> + if (!node)
> + return NULL;
> +
> + return of_get_partition_device_alias(rnode);
> +}
> +EXPORT_SYMBOL_GPL(of_parse_phandle_and_get_alias_from);
> +
> /*
> * of_find_node_by_alias - Find a node given an alias name
> * @root: the root node of the tree. If NULL, use internal tree
> diff --git a/include/of.h b/include/of.h
> index 3f5e5f9b04bb..e93b1bbf2f0a 100644
> --- a/include/of.h
> +++ b/include/of.h
> @@ -314,6 +314,14 @@ extern int of_alias_get_id_from(struct device_node
> *root, struct device_node *np
> extern const char *of_alias_get(struct device_node *np);
> extern int of_modalias_node(struct device_node *node, char *modalias, int
> len);
>
> +extern const char *of_property_get_alias_from(struct device_node *root,
> + const char *np_name, const char
> *propname,
> + int index);
> +
> +extern const char *of_parse_phandle_and_get_alias_from(struct device_node
> *root,
> + const char *np_name,
> const char *phandle_name,
> + int index);
> +
> extern struct device_node *of_get_root_node(void);
> extern int of_set_root_node(struct device_node *node);
> extern int barebox_register_of(struct device_node *root);
> @@ -944,6 +952,20 @@ static inline int of_modalias_node(struct device_node
> *node, char *modalias,
> return -ENOSYS;
> }
>
> +static inline const char *of_property_get_alias_from(struct device_node
> *root,
> + const char *np_name, const
> char *propname,
> + int index)
> +{
> + return NULL;
> +}
> +
> +static inline const char *of_parse_phandle_and_get_alias_from(struct
> device_node *root,
> + const char
> *np_name, const char *phandle_name,
> + int index)
> +{
> + return NULL;
> +}
> +
> static inline int of_platform_populate(struct device_node *root,
> const struct of_device_id *matches,
> struct device *parent)
> @@ -1275,6 +1297,16 @@ static inline void of_delete_property_by_name(struct
> device_node *np, const char
> of_delete_property(of_find_property(np, name, NULL));
> }
>
> +static inline const char *of_property_get_alias(const char *np_name, const
> char *propname)
> +{
> + return of_property_get_alias_from(NULL, np_name, propname, 0);
> +}
> +
> +static inline const char *of_parse_phandle_and_get_alias(const char
> *np_name, const char *phandle_name)
> +{
> + return of_parse_phandle_and_get_alias_from(NULL, np_name, phandle_name,
> 0);
> +}
> +
> extern const struct of_device_id of_default_bus_match_table[];
>
> int of_device_enable(struct device_node *node);
--
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