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From: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
To: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: barebox@lists.infradead.org
Subject: [PATCH v2 15/22] OF: base: import of_parse_phandle from Linux OF API
Date: Wed, 19 Jun 2013 11:09:44 +0200	[thread overview]
Message-ID: <1371632991-1504-16-git-send-email-sebastian.hesselbarth@gmail.com> (raw)
In-Reply-To: <1371576607-8090-1-git-send-email-sebastian.hesselbarth@gmail.com>

This imports of_parse_phandle from Linux OF API.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
---
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


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  parent reply	other threads:[~2013-06-19  9:10 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-18 17:29 [PATCH 00/22] Barebox OF API fixes, sync, and cleanup Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 01/22] lib: string: import case-insensitive string compare Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 02/22] OF: base: bail out early on missing matches for of_match_node Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 03/22] OF: base: also update property length on of_property_write_u32 Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 04/22] OF: base: export of_alias_scan Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 05/22] OF: base: convert strcmp to default string compare functions Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 06/22] OF: base: sync of_find_property with linux OF API Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 07/22] OF: base: sync of_find_node_by_path " Sebastian Hesselbarth
2013-06-18 20:13   ` Sascha Hauer
2013-06-18 20:19     ` Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 08/22] OF: base: rename of_node_disabled to of_device_is_available Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 09/22] OF: base: import of_find_node_by_name from Linux OF API Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 10/22] OF: base: import of_find_compatible_node " Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 11/22] OF: base: import of_find_matching_node_and_match " Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 12/22] OF: base: import of_find_node_with_property " Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 13/22] OF: base: import parent/child functions " Sebastian Hesselbarth
2013-06-18 20:18   ` Sascha Hauer
2013-06-18 20:29   ` Sascha Hauer
2013-06-18 20:34     ` Sebastian Hesselbarth
2013-06-18 17:29 ` [PATCH 14/22] OF: base: import of_property_read_* helpers " Sebastian Hesselbarth
2013-06-18 17:30 ` [PATCH 15/22] OF: base: import of_parse_phandle " Sebastian Hesselbarth
2013-06-18 17:30 ` [PATCH 16/22] OF: base: import parse phandle functions " Sebastian Hesselbarth
2013-06-18 17:30 ` [PATCH 17/22] OF: base: introduce property write for bool, u8, u16, and u64 Sebastian Hesselbarth
2013-06-18 17:30 ` [PATCH 18/22] OF: base: import property iterators from Linux OF API Sebastian Hesselbarth
2013-06-18 17:30 ` [PATCH 19/22] OF: base: remove of_tree_for_each_node from public API Sebastian Hesselbarth
2013-06-18 17:30 ` [PATCH 20/22] OF: base: remove of_find_child_by_name Sebastian Hesselbarth
2013-06-18 17:30 ` [PATCH 21/22] OF: base: convert and remove device_node_for_nach_child Sebastian Hesselbarth
2013-06-18 17:30 ` [PATCH 22/22] OF: base: cleanup base function include Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 00/22] Barebox OF API fixes, sync, and cleanup Sebastian Hesselbarth
2013-06-20  9:18   ` Sascha Hauer
2013-06-19  9:09 ` [PATCH v2 01/22] lib: string: import case-insensitive string compare Sebastian Hesselbarth
2013-06-20  9:04   ` Sascha Hauer
2013-06-19  9:09 ` [PATCH v2 02/22] OF: base: bail out early on missing matches for of_match_node Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 03/22] OF: base: also update property length on of_property_write_u32 Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 04/22] OF: base: export of_alias_scan Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 05/22] OF: base: convert strcmp to default string compare functions Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 06/22] OF: base: sync of_find_property with linux OF API Sebastian Hesselbarth
2013-06-20  8:57   ` Sascha Hauer
2013-06-19  9:09 ` [PATCH v2 07/22] OF: base: sync of_find_node_by_path " Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 08/22] OF: base: rename of_node_disabled to of_device_is_available Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 09/22] OF: base: import of_find_node_by_name from Linux OF API Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 10/22] OF: base: import of_find_compatible_node " Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 11/22] OF: base: import of_find_matching_node_and_match " Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 12/22] OF: base: import of_find_node_with_property " Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 13/22] OF: base: import parent/child functions " Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 14/22] OF: base: import of_property_read_* helpers " Sebastian Hesselbarth
2013-06-19  9:09 ` Sebastian Hesselbarth [this message]
2013-06-19  9:09 ` [PATCH v2 16/22] OF: base: import parse phandle functions " Sebastian Hesselbarth
2013-06-20  8:33   ` Sascha Hauer
2013-06-19  9:09 ` [PATCH v2 17/22] OF: base: introduce property write for bool, u8, u16, and u64 Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 18/22] OF: base: import property iterators from Linux OF API Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 19/22] OF: base: remove of_tree_for_each_node from public API Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 20/22] OF: base: remove of_find_child_by_name Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 21/22] OF: base: convert and remove device_node_for_nach_child Sebastian Hesselbarth
2013-06-19  9:09 ` [PATCH v2 22/22] OF: base: cleanup base function include Sebastian Hesselbarth

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