diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/property.c | 109 |
1 files changed, 78 insertions, 31 deletions
diff --git a/drivers/base/property.c b/drivers/base/property.c index a3538cbdff7e..ebcbe342a77b 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -214,12 +214,8 @@ bool device_property_present(struct device *dev, const char *propname) } EXPORT_SYMBOL_GPL(device_property_present); -/** - * 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) +static 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); @@ -229,6 +225,21 @@ bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname) return !!pset_prop_get(to_pset_node(fwnode), propname); return false; } + +/** + * 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) +{ + bool ret; + + ret = __fwnode_property_present(fwnode, propname); + if (ret == false && fwnode->secondary) + ret = __fwnode_property_present(fwnode->secondary, propname); + return ret; +} EXPORT_SYMBOL_GPL(fwnode_property_present); /** @@ -408,7 +419,7 @@ EXPORT_SYMBOL_GPL(device_property_match_string); (val) ? pset_prop_read_##type##_array((node), (propname), (val), (nval)) \ : pset_prop_count_elems_of_size((node), (propname), sizeof(type)) -#define FWNODE_PROP_READ_ARRAY(_fwnode_, _propname_, _type_, _proptype_, _val_, _nval_) \ +#define FWNODE_PROP_READ(_fwnode_, _propname_, _type_, _proptype_, _val_, _nval_) \ ({ \ int _ret_; \ if (is_of_node(_fwnode_)) \ @@ -425,6 +436,17 @@ EXPORT_SYMBOL_GPL(device_property_match_string); _ret_; \ }) +#define FWNODE_PROP_READ_ARRAY(_fwnode_, _propname_, _type_, _proptype_, _val_, _nval_) \ +({ \ + int _ret_; \ + _ret_ = FWNODE_PROP_READ(_fwnode_, _propname_, _type_, _proptype_, \ + _val_, _nval_); \ + if (_ret_ == -EINVAL && _fwnode_->secondary) \ + _ret_ = FWNODE_PROP_READ(_fwnode_->secondary, _propname_, _type_, \ + _proptype_, _val_, _nval_); \ + _ret_; \ +}) + /** * fwnode_property_read_u8_array - return a u8 array property of firmware node * @fwnode: Firmware node to get the property of @@ -529,6 +551,41 @@ int fwnode_property_read_u64_array(struct fwnode_handle *fwnode, } EXPORT_SYMBOL_GPL(fwnode_property_read_u64_array); +static int __fwnode_property_read_string_array(struct fwnode_handle *fwnode, + const char *propname, + const char **val, size_t nval) +{ + if (is_of_node(fwnode)) + return val ? + of_property_read_string_array(to_of_node(fwnode), + propname, val, nval) : + of_property_count_strings(to_of_node(fwnode), propname); + else if (is_acpi_node(fwnode)) + return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING, + val, nval); + else if (is_pset_node(fwnode)) + return val ? + pset_prop_read_string_array(to_pset_node(fwnode), + propname, val, nval) : + pset_prop_count_elems_of_size(to_pset_node(fwnode), + propname, + sizeof(const char *)); + return -ENXIO; +} + +static int __fwnode_property_read_string(struct fwnode_handle *fwnode, + const char *propname, const char **val) +{ + if (is_of_node(fwnode)) + return of_property_read_string(to_of_node(fwnode), propname, val); + else if (is_acpi_node(fwnode)) + return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING, + val, 1); + else if (is_pset_node(fwnode)) + return pset_prop_read_string(to_pset_node(fwnode), propname, val); + return -ENXIO; +} + /** * fwnode_property_read_string_array - return string array property of a node * @fwnode: Firmware node to get the property of @@ -551,22 +608,13 @@ int fwnode_property_read_string_array(struct fwnode_handle *fwnode, const char *propname, const char **val, size_t nval) { - if (is_of_node(fwnode)) - return val ? - of_property_read_string_array(to_of_node(fwnode), - propname, val, nval) : - of_property_count_strings(to_of_node(fwnode), propname); - else if (is_acpi_node(fwnode)) - return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING, - val, nval); - else if (is_pset_node(fwnode)) - return val ? - pset_prop_read_string_array(to_pset_node(fwnode), - propname, val, nval) : - pset_prop_count_elems_of_size(to_pset_node(fwnode), - propname, - sizeof(const char *)); - return -ENXIO; + int ret; + + ret = __fwnode_property_read_string_array(fwnode, propname, val, nval); + if (ret == -EINVAL && fwnode->secondary) + ret = __fwnode_property_read_string_array(fwnode->secondary, + propname, val, nval); + return ret; } EXPORT_SYMBOL_GPL(fwnode_property_read_string_array); @@ -588,14 +636,13 @@ EXPORT_SYMBOL_GPL(fwnode_property_read_string_array); int fwnode_property_read_string(struct fwnode_handle *fwnode, const char *propname, const char **val) { - if (is_of_node(fwnode)) - return of_property_read_string(to_of_node(fwnode), propname, val); - else if (is_acpi_node(fwnode)) - return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING, - val, 1); - else if (is_pset_node(fwnode)) - return pset_prop_read_string(to_pset_node(fwnode), propname, val); - return -ENXIO; + int ret; + + ret = __fwnode_property_read_string(fwnode, propname, val); + if (ret == -EINVAL && fwnode->secondary) + ret = __fwnode_property_read_string(fwnode->secondary, + propname, val); + return ret; } EXPORT_SYMBOL_GPL(fwnode_property_read_string); |