From 642346ae269c3c5c54cf7e15c426c42f4df031da Mon Sep 17 00:00:00 2001 From: Patrice Chotard Date: Tue, 18 Jul 2017 11:57:08 +0200 Subject: dm: core: add ofnode_count_phandle_with_args() This function is usefull to get phandle number contained in a property list. For example, this allows to allocate the right amount of memory to keep clock's reference contained into the "clocks" property. To implement it, either of_count_phandle_with_args() or fdtdec_parse_phandle_with_args() are used respectively for live tree and flat tree. By passing index = -1, these 2 functions returns the number of phandle contained into the property list. Add also the dev_count_phandle_with_args() based on ofnode_count_phandle_with_args() Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass --- drivers/core/of_access.c | 7 +++++++ drivers/core/ofnode.c | 12 ++++++++++++ 2 files changed, 19 insertions(+) (limited to 'drivers/core') diff --git a/drivers/core/of_access.c b/drivers/core/of_access.c index 2bb23eef88..c31cba7fd6 100644 --- a/drivers/core/of_access.c +++ b/drivers/core/of_access.c @@ -665,6 +665,13 @@ int of_parse_phandle_with_args(const struct device_node *np, index, out_args); } +int of_count_phandle_with_args(const struct device_node *np, + const char *list_name, const char *cells_name) +{ + return __of_parse_phandle_with_args(np, list_name, cells_name, 0, + -1, NULL); +} + static void of_alias_add(struct alias_prop *ap, struct device_node *np, int id, const char *stem, int stem_len) { diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index fd068b06ef..5fc77c52a0 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -313,6 +313,18 @@ int ofnode_parse_phandle_with_args(ofnode node, const char *list_name, return 0; } +int ofnode_count_phandle_with_args(ofnode node, const char *list_name, + const char *cells_name) +{ + if (ofnode_is_np(node)) + return of_count_phandle_with_args(ofnode_to_np(node), + list_name, cells_name); + else + return fdtdec_parse_phandle_with_args(gd->fdt_blob, + ofnode_to_offset(node), list_name, cells_name, + 0, -1, NULL); +} + ofnode ofnode_path(const char *path) { if (of_live_active()) -- cgit v1.2.3