1 // SPDX-License-Identifier: GPL-2.0
11  * pseries_of_derive_parent - basically like dirname(1)
12  * @path:  the full_name of a node to be added to the tree
15  * described by path.  E.g., for path = "/foo/bar", returns
18 struct device_node *pseries_of_derive_parent(const char *path)  in pseries_of_derive_parent()  argument
25 	tail = kbasename(path) - 1;  in pseries_of_derive_parent()
27 	/* reject if path is "/" */  in pseries_of_derive_parent()
28 	if (!strcmp(path, "/"))  in pseries_of_derive_parent()
29 		return ERR_PTR(-EINVAL);  in pseries_of_derive_parent()
31 	if (tail > path) {  in pseries_of_derive_parent()
32 		parent_path = kstrndup(path, tail - path, GFP_KERNEL);  in pseries_of_derive_parent()
34 			return ERR_PTR(-ENOMEM);  in pseries_of_derive_parent()
39 	return parent ? parent : ERR_PTR(-EINVAL);  in pseries_of_derive_parent()
46 			struct of_drc_info *data)  in of_read_drc_info_cell()  argument
51 	if (!data)  in of_read_drc_info_cell()
52 		return -EINVAL;  in of_read_drc_info_cell()
54 	/* Get drc-type:encode-string */  in of_read_drc_info_cell()
55 	data->drc_type = (char *)p;  in of_read_drc_info_cell()
58 		return -EINVAL;  in of_read_drc_info_cell()
60 	/* Get drc-name-prefix:encode-string */  in of_read_drc_info_cell()
61 	data->drc_name_prefix = (char *)p;  in of_read_drc_info_cell()
64 		return -EINVAL;  in of_read_drc_info_cell()
66 	/* Get drc-index-start:encode-int */  in of_read_drc_info_cell()
68 	data->drc_index_start = be32_to_cpu(*p2);  in of_read_drc_info_cell()
70 	/* Get drc-name-suffix-start:encode-int */  in of_read_drc_info_cell()
71 	p2 = of_prop_next_u32(*prop, p2, &data->drc_name_suffix_start);  in of_read_drc_info_cell()
73 		return -EINVAL;  in of_read_drc_info_cell()
75 	/* Get number-sequential-elements:encode-int */  in of_read_drc_info_cell()
76 	p2 = of_prop_next_u32(*prop, p2, &data->num_sequential_elems);  in of_read_drc_info_cell()
78 		return -EINVAL;  in of_read_drc_info_cell()
80 	/* Get sequential-increment:encode-int */  in of_read_drc_info_cell()
81 	p2 = of_prop_next_u32(*prop, p2, &data->sequential_inc);  in of_read_drc_info_cell()
83 		return -EINVAL;  in of_read_drc_info_cell()
85 	/* Get drc-power-domain:encode-int */  in of_read_drc_info_cell()
86 	p2 = of_prop_next_u32(*prop, p2, &data->drc_power_domain);  in of_read_drc_info_cell()
88 		return -EINVAL;  in of_read_drc_info_cell()
92 	data->last_drc_index = data->drc_index_start +  in of_read_drc_info_cell()
93 		((data->num_sequential_elems - 1) * data->sequential_inc);  in of_read_drc_info_cell()