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(struct udevice *dev, const char *propname, u32 *outp)
  14 {
  15         return ofnode_read_u32(dev_ofnode(dev), propname, outp);
  16 }
  17
  18 int dev_read_u32_default(struct udevice *dev, const char *propname, int def)
  19 {
  20         return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  21 }
  22
  23 const char *dev_read_string(struct udevice *dev, const char *propname)
  24 {
  25         return ofnode_read_string(dev_ofnode(dev), propname);
  26 }
  27
  28 bool dev_read_bool(struct udevice *dev, const char *propname)
  29 {
  30         return ofnode_read_bool(dev_ofnode(dev), propname);
  31 }
  32
  33 ofnode dev_read_subnode(struct udevice *dev, const char *subnode_name)
  34 {
  35         return ofnode_find_subnode(dev_ofnode(dev), subnode_name);
  36 }
  37
  38 ofnode dev_read_first_subnode(struct udevice *dev)
  39 {
  40         return ofnode_first_subnode(dev_ofnode(dev));
  41 }
  42
  43 ofnode dev_read_next_subnode(ofnode node)
  44 {
  45         return ofnode_next_subnode(node);
  46 }
  47
  48 int dev_read_size(struct udevice *dev, const char *propname)
  49 {
  50         return ofnode_read_size(dev_ofnode(dev), propname);
  51 }
  52
  53 fdt_addr_t dev_read_addr_index(struct udevice *dev, int index)
  54 {
  55         if (ofnode_is_np(dev_ofnode(dev)))
  56                 return ofnode_get_addr_index(dev_ofnode(dev), index);
  57         else
  58                 return devfdt_get_addr_index(dev, index);
  59 }
  60
  61 fdt_addr_t dev_read_addr(struct udevice *dev)
  62 {
  63         return dev_read_addr_index(dev, 0);
  64 }
  65
  66 void *dev_read_addr_ptr(struct udevice *dev)
  67 {
  68         fdt_addr_t addr = dev_read_addr(dev);
  69
  70         return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0);
  71 }
  72
  73 fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property,
  74                                 fdt_size_t *sizep)
  75 {
  76         return ofnode_get_addr_size(dev_ofnode(dev), property, sizep);
  77 }
  78
  79 const char *dev_read_name(struct udevice *dev)
  80 {
  81         return ofnode_get_name(dev_ofnode(dev));
  82 }
  83
  84 int dev_read_stringlist_search(struct udevice *dev, const char *property,
  85                           const char *string)
  86 {
  87         return ofnode_stringlist_search(dev_ofnode(dev), property, string);
  88 }
  89
  90 int dev_read_string_index(struct udevice *dev, const char *propname, int index,
  91                           const char **outp)
  92 {
  93         return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
  94 }
  95
  96 int dev_read_string_count(struct udevice *dev, const char *propname)
  97 {
  98         return ofnode_read_string_count(dev_ofnode(dev), propname);
  99 }
 100
 101 int dev_read_phandle_with_args(struct udevice *dev, const char *list_name,
 102                                 const char *cells_name, int cell_count,
 103                                 int index,
 104                                 struct ofnode_phandle_args *out_args)
 105 {
 106         return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
 107                                               cells_name, cell_count, index,
 108                                               out_args);
 109 }
 110
 111 int dev_count_phandle_with_args(struct udevice *dev, const char *list_name,
 112                                 const char *cells_name)
 113 {
 114         return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
 115                                               cells_name);
 116 }
 117
 118 int dev_read_addr_cells(struct udevice *dev)
 119 {
 120         return ofnode_read_addr_cells(dev_ofnode(dev));
 121 }
 122
 123 int dev_read_size_cells(struct udevice *dev)
 124 {
 125         return ofnode_read_size_cells(dev_ofnode(dev));
 126 }
 127
 128 int dev_read_simple_addr_cells(struct udevice *dev)
 129 {
 130         return ofnode_read_simple_addr_cells(dev_ofnode(dev));
 131 }
 132
 133 int dev_read_simple_size_cells(struct udevice *dev)
 134 {
 135         return ofnode_read_simple_size_cells(dev_ofnode(dev));
 136 }
 137
 138 int dev_read_phandle(struct udevice *dev)
 139 {
 140         ofnode node = dev_ofnode(dev);
 141
 142         if (ofnode_is_np(node))
 143                 return ofnode_to_np(node)->phandle;
 144         else
 145                 return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
 146 }
 147
 148 const void *dev_read_prop(struct udevice *dev, const char *propname, int *lenp)
 149 {
 150         return ofnode_get_property(dev_ofnode(dev), propname, lenp);
 151 }
 152
 153 int dev_read_alias_seq(struct udevice *dev, int *devnump)
 154 {
 155         ofnode node = dev_ofnode(dev);
 156         const char *uc_name = dev->uclass->uc_drv->name;
 157         int ret;
 158
 159         if (ofnode_is_np(node)) {
 160                 ret = of_alias_get_id(ofnode_to_np(node), uc_name);
 161                 if (ret >= 0)
 162                         *devnump = ret;
 163         } else {
 164                 ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
 165                                            ofnode_to_offset(node), devnump);
 166         }
 167
 168         return ret;
 169 }
 170
 171 int dev_read_u32_array(struct udevice *dev, const char *propname,
 172                        u32 *out_values, size_t sz)
 173 {
 174         return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
 175 }
 176
 177 const uint8_t *dev_read_u8_array_ptr(struct udevice *dev, const char *propname,
 178                                      size_t sz)
 179 {
 180         return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
 181 }
 182
 183 int dev_read_enabled(struct udevice *dev)
 184 {
 185         ofnode node = dev_ofnode(dev);
 186
 187         if (ofnode_is_np(node))
 188                 return of_device_is_available(ofnode_to_np(node));
 189         else
 190                 return fdtdec_get_is_enabled(gd->fdt_blob,
 191                                              ofnode_to_offset(node));
 192 }
 193
 194 int dev_read_resource(struct udevice *dev, uint index, struct resource *res)
 195 {
 196         return ofnode_read_resource(dev_ofnode(dev), index, res);
 197 }
 198
 199 int dev_read_resource_byname(struct udevice *dev, const char *name,
 200                              struct resource *res)
 201 {
 202         return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
 203 }