eaw/u-boot
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

core: Add functions to set properties in live-tree

Browse Source 
Implement a set of functions to manipulate properties in a live device
tree:

* ofnode_write_prop() to set generic properties of a node
* ofnode_write_string() to set string properties of a node
* ofnode_set_enabled() to either enable or disable a node

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Mario Six
2018-06-26 08:46:48 +02:00
committed by Simon Glass
parent 163ed6c342
commit e369e58df7
2 changed files with 116 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
include/dm/ofnode.h
View File

@@ -764,4 +764,50 @@ u64 ofnode_translate_address(ofnode node, const fdt32_t *in_addr);
* @return true if OK, false if the compatible is not found
*/
int ofnode_device_is_compatible(ofnode node, const char *compat);
/**
* ofnode_write_prop() - Set a property of a ofnode
*
* Note that the value passed to the function is *not* allocated by the
* function itself, but must be allocated by the caller if necessary.
*
* @node: The node for whose property should be set
* @propname: The name of the property to set
* @len: The length of the new value of the property
* @value: The new value of the property (must be valid prior to calling
* the function)
* @return 0 if successful, -ve on error
*/
int ofnode_write_prop(ofnode node, const char *propname, int len,
const void *value);
/**
* ofnode_write_string() - Set a string property of a ofnode
*
* Note that the value passed to the function is *not* allocated by the
* function itself, but must be allocated by the caller if necessary.
*
* @node: The node for whose string property should be set
* @propname: The name of the string property to set
* @value: The new value of the string property (must be valid prior to
* calling the function)
* @return 0 if successful, -ve on error
*/
int ofnode_write_string(ofnode node, const char *propname, const char *value);
/**
* ofnode_set_enabled() - Enable or disable a device tree node given by its
* ofnode
*
* This function effectively sets the node's "status" property to either "okay"
* or "disable", hence making it available for driver model initialization or
* not.
*
* @node: The node to enable
* @value: Flag that tells the function to either disable or enable the
* node
* @return 0 if successful, -ve on error
*/
int ofnode_set_enabled(ofnode node, bool value);
#endif