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@xxxxxxxxx>
---
Cc: barebox@xxxxxxxxxxxxxxxxxxx
---
drivers/of/base.c | 41 +++++++++++++++++++++++++++++++++++++++++
include/of.h | 43 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 84 insertions(+), 0 deletions(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 4c6f2f4..489fa89 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.
*
diff --git a/include/of.h b/include/of.h
index 53a135a..0306742 100644
--- a/include/of.h
+++ b/include/of.h
@@ -205,6 +205,10 @@ extern int of_property_match_string(struct device_node *np,
extern int of_property_count_strings(struct device_node *np,
const char *propname);
+extern const __be32 *of_prop_next_u32(struct property *prop,
+ const __be32 *cur, u32 *pu);
+extern const char *of_prop_next_string(struct property *prop, const char *cur);
+
extern int of_property_write_bool(struct device_node *np,
const char *propname, const bool value);
extern int of_property_write_u8_array(struct device_node *np,
@@ -357,6 +361,18 @@ static inline int of_property_count_strings(struct device_node *np,
return -ENOSYS;
}
+static inline const __be32 *of_prop_next_u32(struct property *prop,
+ const __be32 *cur, u32 *pu)
+{
+ return 0;
+}
+
+static inline const char *of_prop_next_string(struct property *prop,
+ const char *cur)
+{
+ return NULL;
+}
+
static inline int of_property_write_bool(struct device_node *np,
const char *propname, const bool value)
{
@@ -536,6 +552,33 @@ static inline int of_property_read_u32(const struct device_node *np,
return of_property_read_u32_array(np, propname, out_value, 1);
}
+/*
+ * struct property *prop;
+ * const __be32 *p;
+ * u32 u;
+ *
+ * of_property_for_each_u32(np, "propname", prop, p, u)
+ * printk("U32 value: %x\n", u);
+ */
+#define of_property_for_each_u32(np, propname, prop, p, u) \
+ for (prop = of_find_property(np, propname, NULL), \
+ p = of_prop_next_u32(prop, NULL, &u); \
+ p; \
+ p = of_prop_next_u32(prop, p, &u))
+
+/*
+ * struct property *prop;
+ * const char *s;
+ *
+ * of_property_for_each_string(np, "propname", prop, s)
+ * printk("String value: %s\n", s);
+ */
+#define of_property_for_each_string(np, propname, prop, s) \
+ for (prop = of_find_property(np, propname, NULL), \
+ s = of_prop_next_string(prop, NULL); \
+ s; \
+ s = of_prop_next_string(prop, s))
+
static inline int of_property_write_u8(struct device_node *np,
const char *propname, u8 value)
{
--
1.7.2.5
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