drivers/core/read.c

   1 /*
   2  * Copyright (c) 2017 Google, Inc
   3  * Written by Simon Glass <sjg@chromium.org>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <dm.h>
  10 #include <mapmem.h>
  11 #include <dm/of_access.h>
  12
  13 int dev_read_u32_default(struct udevice *dev, const char *propname, int def)
  14 {
  15         return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  16 }
  17
  18 const char *dev_read_string(struct udevice *dev, const char *propname)
  19 {
  20         return ofnode_read_string(dev_ofnode(dev), propname);
  21 }
  22
  23 bool dev_read_bool(struct udevice *dev, const char *propname)
  24 {
  25         return ofnode_read_bool(dev_ofnode(dev), propname);
  26 }
  27
  28 ofnode dev_read_subnode(struct udevice *dev, const char *subnode_name)
  29 {
  30         return ofnode_find_subnode(dev_ofnode(dev), subnode_name);
  31 }
  32
  33 ofnode dev_read_first_subnode(struct udevice *dev)
  34 {
  35         return ofnode_first_subnode(dev_ofnode(dev));
  36 }
  37
  38 ofnode dev_read_next_subnode(ofnode node)
  39 {
  40         return ofnode_next_subnode(node);
  41 }
  42
  43 int dev_read_size(struct udevice *dev, const char *propname)
  44 {
  45         return ofnode_read_size(dev_ofnode(dev), propname);
  46 }
  47
  48 fdt_addr_t dev_read_addr_index(struct udevice *dev, int index)
  49 {
  50         if (ofnode_is_np(dev_ofnode(dev)))
  51                 return ofnode_get_addr_index(dev_ofnode(dev), index);
  52         else
  53                 return devfdt_get_addr_index(dev, index);
  54 }
  55
  56 fdt_addr_t dev_read_addr(struct udevice *dev)
  57 {
  58         return dev_read_addr_index(dev, 0);
  59 }
  60
  61 void *dev_read_addr_ptr(struct udevice *dev)
  62 {
  63         fdt_addr_t addr = dev_read_addr(dev);
  64
  65         return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0);
  66 }
  67
  68 fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property,
  69                                 fdt_size_t *sizep)
  70 {
  71         return ofnode_get_addr_size(dev_ofnode(dev), property, sizep);
  72 }
  73
  74 const char *dev_read_name(struct udevice *dev)
  75 {
  76         return ofnode_get_name(dev_ofnode(dev));
  77 }
  78
  79 int dev_read_stringlist_search(struct udevice *dev, const char *property,
  80                           const char *string)
  81 {
  82         return ofnode_stringlist_search(dev_ofnode(dev), property, string);
  83 }
  84
  85 int dev_read_string_index(struct udevice *dev, const char *propname, int index,
  86                           const char **outp)
  87 {
  88         return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
  89 }
  90
  91 int dev_read_string_count(struct udevice *dev, const char *propname)
  92 {
  93         return ofnode_read_string_count(dev_ofnode(dev), propname);
  94 }
  95
  96 int dev_read_phandle_with_args(struct udevice *dev, const char *list_name,
  97                                 const char *cells_name, int cell_count,
  98                                 int index,
  99                                 struct ofnode_phandle_args *out_args)
 100 {
 101         return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
 102                                               cells_name, cell_count, index,
 103                                               out_args);
 104 }
 105
 106 int dev_count_phandle_with_args(struct udevice *dev, const char *list_name,
 107                                 const char *cells_name)
 108 {
 109         return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
 110                                               cells_name);
 111 }
 112
 113 int dev_read_addr_cells(struct udevice *dev)
 114 {
 115         return ofnode_read_addr_cells(dev_ofnode(dev));
 116 }
 117
 118 int dev_read_size_cells(struct udevice *dev)
 119 {
 120         return ofnode_read_size_cells(dev_ofnode(dev));
 121 }
 122
 123 int dev_read_simple_addr_cells(struct udevice *dev)
 124 {
 125         return ofnode_read_simple_addr_cells(dev_ofnode(dev));
 126 }
 127
 128 int dev_read_simple_size_cells(struct udevice *dev)
 129 {
 130         return ofnode_read_simple_size_cells(dev_ofnode(dev));
 131 }
 132
 133 int dev_read_phandle(struct udevice *dev)
 134 {
 135         ofnode node = dev_ofnode(dev);
 136
 137         if (ofnode_is_np(node))
 138                 return ofnode_to_np(node)->phandle;
 139         else
 140                 return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
 141 }
 142
 143 const void *dev_read_prop(struct udevice *dev, const char *propname, int *lenp)
 144 {
 145         return ofnode_get_property(dev_ofnode(dev), propname, lenp);
 146 }
 147
 148 int dev_read_alias_seq(struct udevice *dev, int *devnump)
 149 {
 150         ofnode node = dev_ofnode(dev);
 151         const char *uc_name = dev->uclass->uc_drv->name;
 152         int ret;
 153
 154         if (ofnode_is_np(node)) {
 155                 ret = of_alias_get_id(ofnode_to_np(node), uc_name);
 156                 if (ret >= 0)
 157                         *devnump = ret;
 158         } else {
 159                 ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
 160                                            ofnode_to_offset(node), devnump);
 161         }
 162
 163         return ret;
 164 }
 165
 166 int dev_read_u32_array(struct udevice *dev, const char *propname,
 167                        u32 *out_values, size_t sz)
 168 {
 169         return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
 170 }
 171
 172 const uint8_t *dev_read_u8_array_ptr(struct udevice *dev, const char *propname,
 173                                      size_t sz)
 174 {
 175         return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
 176 }
 177
 178 int dev_read_enabled(struct udevice *dev)
 179 {
 180         ofnode node = dev_ofnode(dev);
 181
 182         if (ofnode_is_np(node))
 183                 return of_device_is_available(ofnode_to_np(node));
 184         else
 185                 return fdtdec_get_is_enabled(gd->fdt_blob,
 186                                              ofnode_to_offset(node));
 187 }
 188
 189 int dev_read_resource(struct udevice *dev, uint index, struct resource *res)
 190 {
 191         return ofnode_read_resource(dev_ofnode(dev), index, res);
 192 }
 193
 194 int dev_read_resource_byname(struct udevice *dev, const char *name,
 195                              struct resource *res)
 196 {
 197         return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
 198 }