xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'robherring/for-next' from git://sources.calxeda.com/kernel/linux.git

Browse Source 
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Grant Likely
2013-02-08 09:23:33 +00:00
parent 12514aa0e6 eb7ccb8184
commit d2f4ec1026
2 changed files with 76 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

95
drivers/of/base.c
View File

@@ -147,16 +147,14 @@ void of_node_put(struct device_node *node)
EXPORT_SYMBOL(of_node_put);
#endif /* CONFIG_OF_DYNAMIC */
struct property *of_find_property(const struct device_node *np,
const char *name,
int *lenp)
static struct property *__of_find_property(const struct device_node *np,
const char *name, int *lenp)
{
struct property *pp;
if (!np)
return NULL;
read_lock(&devtree_lock);
for (pp = np->properties; pp; pp = pp->next) {
if (of_prop_cmp(pp->name, name) == 0) {
if (lenp)
@@ -164,6 +162,18 @@ struct property *of_find_property(const struct device_node *np,
break;
}
}
return pp;
}
struct property *of_find_property(const struct device_node *np,
const char *name,
int *lenp)
{
struct property *pp;
read_lock(&devtree_lock);
pp = __of_find_property(np, name, lenp);
read_unlock(&devtree_lock);
return pp;
@@ -193,12 +203,24 @@ struct device_node *of_find_all_nodes(struct device_node *prev)
}
EXPORT_SYMBOL(of_find_all_nodes);
/*
* Find a property with a given name for a given node
* and return the value.
*/
static const void *__of_get_property(const struct device_node *np,
const char *name, int *lenp)
{
struct property *pp = __of_find_property(np, name, lenp);
return pp ? pp->value : NULL;
}
/*
* Find a property with a given name for a given node
* and return the value.
*/
const void *of_get_property(const struct device_node *np, const char *name,
int *lenp)
int *lenp)
{
struct property *pp = of_find_property(np, name, lenp);
@@ -209,13 +231,13 @@ EXPORT_SYMBOL(of_get_property);
/** Checks if the given "compat" string matches one of the strings in
* the device's "compatible" property
*/
int of_device_is_compatible(const struct device_node *device,
const char *compat)
static int __of_device_is_compatible(const struct device_node *device,
const char *compat)
{
const char* cp;
int cplen, l;
cp = of_get_property(device, "compatible", &cplen);
cp = __of_get_property(device, "compatible", &cplen);
if (cp == NULL)
return 0;
while (cplen > 0) {
@@ -228,6 +250,20 @@ int of_device_is_compatible(const struct device_node *device,
return 0;
}
/** Checks if the given "compat" string matches one of the strings in
* the device's "compatible" property
*/
int of_device_is_compatible(const struct device_node *device,
const char *compat)
{
int res;
read_lock(&devtree_lock);
res = __of_device_is_compatible(device, compat);
read_unlock(&devtree_lock);
return res;
}
EXPORT_SYMBOL(of_device_is_compatible);
/**
@@ -501,7 +537,8 @@ struct device_node *of_find_compatible_node(struct device_node *from,
if (type
&& !(np->type && (of_node_cmp(np->type, type) == 0)))
continue;
if (of_device_is_compatible(np, compatible) && of_node_get(np))
if (__of_device_is_compatible(np, compatible) &&
of_node_get(np))
break;
}
of_node_put(from);
@@ -545,15 +582,9 @@ out:
}
EXPORT_SYMBOL(of_find_node_with_property);
/**
* of_match_node - Tell if an device_node has a matching of_match structure
* @matches: array of of device match structures to search in
* @node: the of device structure to match against
*
* Low level utility function used by device matching.
*/
const struct of_device_id *of_match_node(const struct of_device_id *matches,
const struct device_node *node)
static
const struct of_device_id *__of_match_node(const struct of_device_id *matches,
const struct device_node *node)
{
if (!matches)
return NULL;
@@ -567,14 +598,32 @@ const struct of_device_id *of_match_node(const struct of_device_id *matches,
match &= node->type
&& !strcmp(matches->type, node->type);
if (matches->compatible[0])
match &= of_device_is_compatible(node,
matches->compatible);
match &= __of_device_is_compatible(node,
matches->compatible);
if (match)
return matches;
matches++;
}
return NULL;
}
/**
* of_match_node - Tell if an device_node has a matching of_match structure
* @matches: array of of device match structures to search in
* @node: the of device structure to match against
*
* Low level utility function used by device matching.
*/
const struct of_device_id *of_match_node(const struct of_device_id *matches,
const struct device_node *node)
{
const struct of_device_id *match;
read_lock(&devtree_lock);
match = __of_match_node(matches, node);
read_unlock(&devtree_lock);
return match;
}
EXPORT_SYMBOL(of_match_node);
/**
@@ -595,6 +644,7 @@ struct device_node *of_find_matching_node_and_match(struct device_node *from,
const struct of_device_id **match)
{
struct device_node *np;
const struct of_device_id *m;
if (match)
*match = NULL;
@@ -602,9 +652,10 @@ struct device_node *of_find_matching_node_and_match(struct device_node *from,
read_lock(&devtree_lock);
np = from ? from->allnext : of_allnodes;
for (; np; np = np->allnext) {
if (of_match_node(matches, np) && of_node_get(np)) {
m = __of_match_node(matches, np);
if (m && of_node_get(np)) {
if (match)
*match = matches;
*match = m;
break;
}
}