/**
* fwnode_property_present - check if a property of a firmware node is present
* @fwnode: Firmware node whose property to check
* @propname: Name of the property
*/
bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname)
{
if (is_of_node(fwnode))
return of_property_read_bool(to_of_node(fwnode), propname);
else if (is_acpi_node(fwnode))
return !acpi_dev_prop_get(to_acpi_node(fwnode), propname, NULL);
return !!pset_prop_get(to_pset(fwnode), propname);
}
static int pset_prop_count_elems_of_size(struct property_set *pset,
const char *propname, size_t length)
{
struct property_entry *prop;
prop = pset_prop_get(pset, propname);
if (!prop)
return -EINVAL;
return prop->length / length;
}
static void *pset_prop_find(struct property_set *pset, const char *propname,
size_t length)
{
struct property_entry *prop;
void *pointer;
prop = pset_prop_get(pset, propname);
if (!prop)
return ERR_PTR(-EINVAL);
if (prop->is_array)
pointer = prop->pointer.raw_data;
else
pointer = &prop->value.raw_data;
if (!pointer)
return ERR_PTR(-ENODATA);
if (length > prop->length)
return ERR_PTR(-EOVERFLOW);
return pointer;
}
static int pset_prop_read_array(struct property_set *pset, const char *name,
enum dev_prop_type type, void *val, size_t nval)
{
struct property_entry *prop;
unsigned int item_size;
prop = pset_prop_get(pset, name);
if (!prop)
return -ENODATA;
if (prop->type != type)
return -EPROTO;
if (!val)
return prop->nval;
if (prop->nval < nval)
return -EOVERFLOW;
switch (type) {
case DEV_PROP_U8:
item_size = sizeof(u8);
break;
case DEV_PROP_U16:
item_size = sizeof(u16);
break;
case DEV_PROP_U32:
item_size = sizeof(u32);
break;
case DEV_PROP_U64:
item_size = sizeof(u64);
break;
case DEV_PROP_STRING:
item_size = sizeof(const char *);
break;
default:
return -EINVAL;
}
memcpy(val, prop->value.raw_data, nval * item_size);
return 0;
}
static int pset_prop_read_string(struct property_set *pset,
const char *propname, const char **strings)
{
struct property_entry *prop;
const char **pointer;
prop = pset_prop_get(pset, propname);
if (!prop)
return -EINVAL;
if (!prop->is_string)
return -EILSEQ;
if (prop->is_array) {
pointer = prop->pointer.str;
if (!pointer)
return -ENODATA;
} else {
pointer = &prop->value.str;
if (*pointer && strnlen(*pointer, prop->length) >= prop->length)
return -EILSEQ;
}
*strings = *pointer;
return 0;
}
