mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 07/37] of: Add of_set_property and of_create_node
Date: Mon,  4 Mar 2013 10:53:10 +0100	[thread overview]
Message-ID: <1362390820-10333-8-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1362390820-10333-1-git-send-email-s.hauer@pengutronix.de>

Add functions to create a new device node and to create/set
a new property based on the nodepath.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/of/base.c |   79 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/of.h      |    3 ++
 2 files changed, 82 insertions(+)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index ad278ad..11d17c6 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -663,6 +663,41 @@ void of_delete_property(struct property *pp)
 	free(pp);
 }
 
+/**
+ * of_set_property - create a property for a given node
+ * @node - the node
+ * @name - the name of the property
+ * @val - the value for the property
+ * @len - the length of the properties value
+ * @create - if true, the property is created if not existing already
+ */
+int of_set_property(struct device_node *np, const char *name, const void *val, int len,
+		int create)
+{
+	struct property *pp;
+
+	if (!np)
+		return -ENOENT;
+
+	pp = of_find_property(np, name);
+	if (pp) {
+		void *data;
+
+		free(pp->value);
+		data = xzalloc(len);
+		memcpy(data, val, len);
+		pp->value = data;
+		pp->length = len;
+	} else {
+		if (!create)
+			return -ENOENT;
+
+		pp = of_new_property(np, name, val, len);
+	}
+
+	return 0;
+}
+
 static struct device_d *add_of_amba_device(struct device_node *node)
 {
 	struct amba_device *dev;
@@ -942,6 +977,50 @@ struct device_node *of_find_child_by_name(struct device_node *node, const char *
 	return NULL;
 }
 
+/**
+ * of_create_node - create a new node including its parents
+ * @path - the nodepath to create
+ */
+struct device_node *of_create_node(struct device_node *root, const char *path)
+{
+	char *slash, *p, *freep;
+	struct device_node *tmp, *dn = root;
+
+	if (*path != '/')
+		return NULL;
+
+	path++;
+
+	p = freep = xstrdup(path);
+
+	while (1) {
+		if (!*p)
+			goto out;
+
+		slash = strchr(p, '/');
+		if (slash)
+			*slash = 0;
+
+		tmp = of_find_child_by_name(dn, p);
+		if (tmp)
+			dn = tmp;
+		else
+			dn = of_new_node(dn, p);
+
+		if (!dn)
+			goto out;
+
+		if (!slash)
+			goto out;
+
+		p = slash + 1;
+	}
+out:
+	free(freep);
+
+	return dn;
+}
+
 /*
  * Parse a flat device tree binary blob and store it in the barebox
  * internal tree format,
diff --git a/include/of.h b/include/of.h
index 8166273..3305f03 100644
--- a/include/of.h
+++ b/include/of.h
@@ -138,6 +138,9 @@ void of_delete_property(struct property *pp);
 
 int of_property_read_string(struct device_node *np, const char *propname,
 				const char **out_string);
+int of_set_property(struct device_node *node, const char *p, const void *val, int len,
+		int create);
+struct device_node *of_create_node(struct device_node *root, const char *path);
 
 #ifdef CONFIG_OFDEVICE
 int of_parse_partitions(const char *cdevname,
-- 
1.7.10.4


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

  parent reply	other threads:[~2013-03-04  9:53 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-04  9:53 [PATCH v2] remove libfdt Sascha Hauer
2013-03-04  9:53 ` [PATCH 01/37] of: unflatten: allocate root node explicitly Sascha Hauer
2013-03-04  9:53 ` [PATCH 02/37] of: export of_find_child Sascha Hauer
2013-03-04  9:53 ` [PATCH 03/37] of: removed unused variables Sascha Hauer
2013-03-04  9:53 ` [PATCH 04/37] of: Let of_find_node_by_path iterate over tree Sascha Hauer
2013-03-04  9:53 ` [PATCH 05/37] of: remove allnodes list Sascha Hauer
2013-03-04  9:53 ` [PATCH 06/37] ARM bootm: Use of_get_fixed_tree Sascha Hauer
2013-03-04  9:53 ` Sascha Hauer [this message]
2013-03-04  9:53 ` [PATCH 08/37] of_node command: use of_create_node Sascha Hauer
2013-03-04  9:53 ` [PATCH 09/37] of: Add missing prototype for of_device_is_compatible Sascha Hauer
2013-03-04  9:53 ` [PATCH 10/37] of: let of_unflatten_dtb return the unflattened tree Sascha Hauer
2013-03-04  9:53 ` [PATCH 11/37] of: Add root node argument to of_find_node_by_path Sascha Hauer
2013-03-04  9:53 ` [PATCH 12/37] of: Add of_write_number helper Sascha Hauer
2013-03-04  9:53 ` [PATCH 13/37] of: Add initrd helper Sascha Hauer
2013-03-04 12:01   ` Alexander Aring
2013-03-04  9:53 ` [PATCH 14/37] of: make unflatten independent of libfdt Sascha Hauer
2013-03-04  9:53 ` [PATCH 15/37] of: make flatten " Sascha Hauer
2013-03-04  9:53 ` [PATCH 16/37] of/fdt: use optimized endianess conversion Sascha Hauer
2013-03-04  9:53 ` [PATCH 17/37] oftree command: Use of_print_nodes Sascha Hauer
2013-03-04  9:53 ` [PATCH 18/37] of: move OFTREE Kconfig option to drivers/of/ Sascha Hauer
2013-03-04  9:53 ` [PATCH 19/37] of: make OFDEVICE a user selectable option Sascha Hauer
2013-03-04  9:53 ` [PATCH 20/37] oftree command: retire CMD_OFTREE_PROBE Kconfig option Sascha Hauer
2013-03-04  9:53 ` [PATCH 21/37] of: move oftree Kconfig to the top of the drivers menu Sascha Hauer
2013-03-04  9:53 ` [PATCH 22/37] of: Pass barebox internal format devicetree to of_get_fixed_tree Sascha Hauer
2013-03-04  9:53 ` [PATCH 23/37] bootm: Use of_print_nodes instead of fdt_print Sascha Hauer
2013-03-04  9:53 ` [PATCH 24/37] of: move flat devicetree functions to separate file Sascha Hauer
2013-03-04  9:53 ` [PATCH 25/37] of: Add of property write functions for u32 Sascha Hauer
2013-03-04  9:53 ` [PATCH 26/37] of: make value of property in of_new_property optional Sascha Hauer
2013-03-04  9:53 ` [PATCH 27/37] of: Add missing prototype for size/address counting functions Sascha Hauer
2013-03-04  9:53 ` [PATCH 28/37] of: fixup unflattened devicetree Sascha Hauer
2013-03-04  9:53 ` [PATCH 29/37] of_* commands: print usage when insufficient arguments are given Sascha Hauer
2013-03-04  9:53 ` [PATCH 30/37] of_property command: Fix crash with empty property value Sascha Hauer
2013-03-04  9:53 ` [PATCH 31/37] ARM: bootm: rework concatenated oftree Sascha Hauer
2013-03-04  9:53 ` [PATCH 32/37] of: memory: Use of_write_number Sascha Hauer
2013-03-04  9:53 ` [PATCH 33/37] of: Add reservemap handling Sascha Hauer
2013-03-04  9:53 ` [PATCH 34/37] bootm: Pass unflattened devicetree to handlers Sascha Hauer
2013-03-04  9:53 ` [PATCH 35/37] ARM bootm: Switch initrd support to unflattened tree Sascha Hauer
2013-03-04  9:53 ` [PATCH 36/37] of: remove unused libfdt Sascha Hauer
2013-03-04  9:53 ` [PATCH 37/37] of: make locally used functions static Sascha Hauer

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1362390820-10333-8-git-send-email-s.hauer@pengutronix.de \
    --to=s.hauer@pengutronix.de \
    --cc=barebox@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox