From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-bk0-x231.google.com ([2a00:1450:4008:c01::231]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UpEPa-0008L2-FU for barebox@lists.infradead.org; Wed, 19 Jun 2013 09:10:44 +0000 Received: by mail-bk0-f49.google.com with SMTP id mz10so2211705bkb.8 for ; Wed, 19 Jun 2013 02:10:08 -0700 (PDT) From: Sebastian Hesselbarth Date: Wed, 19 Jun 2013 11:09:44 +0200 Message-Id: <1371632991-1504-16-git-send-email-sebastian.hesselbarth@gmail.com> In-Reply-To: <1371576607-8090-1-git-send-email-sebastian.hesselbarth@gmail.com> References: <1371576607-8090-1-git-send-email-sebastian.hesselbarth@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH v2 15/22] OF: base: import of_parse_phandle from Linux OF API To: Sebastian Hesselbarth Cc: barebox@lists.infradead.org This imports of_parse_phandle from Linux OF API. Signed-off-by: Sebastian Hesselbarth --- Cc: barebox@lists.infradead.org --- drivers/of/base.c | 23 +++++++++++++++++++++++ include/of.h | 10 ++++++++++ 2 files changed, 33 insertions(+), 0 deletions(-) diff --git a/drivers/of/base.c b/drivers/of/base.c index d58ba4d..486758b 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -839,6 +839,29 @@ int of_property_write_u32_array(struct device_node *np, } /** + * of_parse_phandle - Resolve a phandle property to a device_node pointer + * @np: Pointer to device node holding phandle property + * @phandle_name: Name of property holding a phandle value + * @index: For properties holding a table of phandles, this is the index into + * the table + * + * Returns the device_node pointer found or NULL. + */ +struct device_node *of_parse_phandle(const struct device_node *np, + const char *phandle_name, int index) +{ + const __be32 *phandle; + int size; + + phandle = of_get_property(np, phandle_name, &size); + if ((!phandle) || (size < sizeof(*phandle) * (index + 1))) + return NULL; + + return of_find_node_by_phandle(be32_to_cpup(phandle + index)); +} +EXPORT_SYMBOL(of_parse_phandle); + +/** * of_parse_phandles_with_args - Find a node pointed by phandle in a list * @np: pointer to a device tree node containing a list * @list_name: property name that contains a list diff --git a/include/of.h b/include/of.h index d94527d..4f5470a 100644 --- a/include/of.h +++ b/include/of.h @@ -216,6 +216,10 @@ extern int of_property_match_string(struct device_node *np, extern int of_property_count_strings(struct device_node *np, const char *propname); +extern struct device_node *of_parse_phandle(const struct device_node *np, + const char *phandle_name, + int index); + extern void of_alias_scan(void); extern int of_alias_get_id(struct device_node *np, const char *stem); extern const char *of_alias_get(struct device_node *np); @@ -348,6 +352,12 @@ static inline int of_property_count_strings(struct device_node *np, return -ENOSYS; } +static inline struct device_node *of_parse_phandle(const struct device_node *np, + const char *phandle_name, int index) +{ + return NULL; +} + static inline struct device_node *of_find_node_by_path_from( struct device_node *from, const char *path) { -- 1.7.2.5 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox