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, struct ofnode_phandle_args *out_args)
 104 {
 105         return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
 106                                               cells_name, cell_count, index,
 107                                               out_args);
 108 }
 109
 110 int dev_count_phandle_with_args(struct udevice *dev, const char *list_name,
 111                                 const char *cells_name)
 112 {
 113         return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
 114                                               cells_name);
 115 }
 116
 117 int dev_read_addr_cells(struct udevice *dev)
 118 {
 119         return ofnode_read_addr_cells(dev_ofnode(dev));
 120 }
 121
 122 int dev_read_size_cells(struct udevice *dev)
 123 {
 124         return ofnode_read_size_cells(dev_ofnode(dev));
 125 }
 126
 127 int dev_read_simple_addr_cells(struct udevice *dev)
 128 {
 129         return ofnode_read_simple_addr_cells(dev_ofnode(dev));
 130 }
 131
 132 int dev_read_simple_size_cells(struct udevice *dev)
 133 {
 134         return ofnode_read_simple_size_cells(dev_ofnode(dev));
 135 }
 136
 137 int dev_read_phandle(struct udevice *dev)
 138 {
 139         ofnode node = dev_ofnode(dev);
 140
 141         if (ofnode_is_np(node))
 142                 return ofnode_to_np(node)->phandle;
 143         else
 144                 return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
 145 }
 146
 147 const void *dev_read_prop(struct udevice *dev, const char *propname, int *lenp)
 148 {
 149         return ofnode_get_property(dev_ofnode(dev), propname, lenp);
 150 }
 151
 152 int dev_read_alias_seq(struct udevice *dev, int *devnump)
 153 {
 154         ofnode node = dev_ofnode(dev);
 155         const char *uc_name = dev->uclass->uc_drv->name;
 156         int ret;
 157
 158         if (ofnode_is_np(node)) {
 159                 ret = of_alias_get_id(ofnode_to_np(node), uc_name);
 160                 if (ret >= 0)
 161                         *devnump = ret;
 162         } else {
 163                 ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
 164                                            ofnode_to_offset(node), devnump);
 165         }
 166
 167         return ret;
 168 }
 169
 170 int dev_read_u32_array(struct udevice *dev, const char *propname,
 171                        u32 *out_values, size_t sz)
 172 {
 173         return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
 174 }
 175
 176 const uint8_t *dev_read_u8_array_ptr(struct udevice *dev, const char *propname,
 177                                      size_t sz)
 178 {
 179         return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
 180 }
 181
 182 int dev_read_enabled(struct udevice *dev)
 183 {
 184         ofnode node = dev_ofnode(dev);
 185
 186         if (ofnode_is_np(node))
 187                 return of_device_is_available(ofnode_to_np(node));
 188         else
 189                 return fdtdec_get_is_enabled(gd->fdt_blob,
 190                                              ofnode_to_offset(node));
 191 }
 192
 193 int dev_read_resource(struct udevice *dev, uint index, struct resource *res)
 194 {
 195         return ofnode_read_resource(dev_ofnode(dev), index, res);
 196 }
 197
 198 int dev_read_resource_byname(struct udevice *dev, const char *name,
 199                              struct resource *res)
 200 {
 201         return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
 202 }
 203
 204 u64 dev_translate_address(struct udevice *dev, const fdt32_t *in_addr)
 205 {
 206         return ofnode_translate_address(dev_ofnode(dev), in_addr);
 207 }