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author | Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> | 2013-06-14 17:34:23 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-06-20 21:20:55 +0200 |
commit | 2fe4a860eb856a4b4218983497d30b4d5c356e98 (patch) | |
tree | edc1809fd5c59b83f07da61ed2a4a4094db57634 /drivers/of/base.c | |
parent | a0b6c0d00ac947686de03644d4521ecbc28fff0d (diff) | |
download | barebox-2fe4a860eb856a4b4218983497d30b4d5c356e98.tar.gz barebox-2fe4a860eb856a4b4218983497d30b4d5c356e98.tar.xz |
OF: base: import property iterators from Linux OF API
This imports of_prop_next_u32, of_prop_next_string, and the corresponding
for_property_for_each_ helpers from Linux OF API.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Diffstat (limited to 'drivers/of/base.c')
-rw-r--r-- | drivers/of/base.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index 478de9dd0c..2d53b14259 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -797,6 +797,47 @@ int of_property_count_strings(struct device_node *np, const char *propname) } EXPORT_SYMBOL_GPL(of_property_count_strings); +const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, + u32 *pu) +{ + const void *curv = cur; + + if (!prop) + return NULL; + + if (!cur) { + curv = prop->value; + goto out_val; + } + + curv += sizeof(*cur); + if (curv >= prop->value + prop->length) + return NULL; + +out_val: + *pu = be32_to_cpup(curv); + return curv; +} +EXPORT_SYMBOL_GPL(of_prop_next_u32); + +const char *of_prop_next_string(struct property *prop, const char *cur) +{ + const void *curv = cur; + + if (!prop) + return NULL; + + if (!cur) + return prop->value; + + curv += strlen(cur) + 1; + if (curv >= prop->value + prop->length) + return NULL; + + return curv; +} +EXPORT_SYMBOL_GPL(of_prop_next_string); + /** * of_property_write_bool - Create/Delete empty (bool) property. * |