drivers/core/read.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2017 Google, Inc
   4  * Written by Simon Glass <sjg@chromium.org>
   5  */
   6
   7 #include <asm/types.h>
   8 #include <asm/io.h>
   9 #include <common.h>
  10 #include <dm.h>
  11 #include <mapmem.h>
  12 #include <dm/of_access.h>
  13
  14 int dev_read_u32(struct udevice *dev, const char *propname, u32 *outp)
  15 {
  16         return ofnode_read_u32(dev_ofnode(dev), propname, outp);
  17 }
  18
  19 int dev_read_u32_default(struct udevice *dev, const char *propname, int def)
  20 {
  21         return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  22 }
  23
  24 int dev_read_s32(struct udevice *dev, const char *propname, s32 *outp)
  25 {
  26         return ofnode_read_u32(dev_ofnode(dev), propname, (u32 *)outp);
  27 }
  28
  29 int dev_read_s32_default(struct udevice *dev, const char *propname, int def)
  30 {
  31         return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  32 }
  33
  34 int dev_read_u32u(struct udevice *dev, const char *propname, uint *outp)
  35 {
  36         u32 val;
  37         int ret;
  38
  39         ret = ofnode_read_u32(dev_ofnode(dev), propname, &val);
  40         if (ret)
  41                 return ret;
  42         *outp = val;
  43
  44         return 0;
  45 }
  46
  47 const char *dev_read_string(struct udevice *dev, const char *propname)
  48 {
  49         return ofnode_read_string(dev_ofnode(dev), propname);
  50 }
  51
  52 bool dev_read_bool(struct udevice *dev, const char *propname)
  53 {
  54         return ofnode_read_bool(dev_ofnode(dev), propname);
  55 }
  56
  57 ofnode dev_read_subnode(struct udevice *dev, const char *subnode_name)
  58 {
  59         return ofnode_find_subnode(dev_ofnode(dev), subnode_name);
  60 }
  61
  62 ofnode dev_read_first_subnode(struct udevice *dev)
  63 {
  64         return ofnode_first_subnode(dev_ofnode(dev));
  65 }
  66
  67 ofnode dev_read_next_subnode(ofnode node)
  68 {
  69         return ofnode_next_subnode(node);
  70 }
  71
  72 int dev_read_size(struct udevice *dev, const char *propname)
  73 {
  74         return ofnode_read_size(dev_ofnode(dev), propname);
  75 }
  76
  77 fdt_addr_t dev_read_addr_index(struct udevice *dev, int index)
  78 {
  79         if (ofnode_is_np(dev_ofnode(dev)))
  80                 return ofnode_get_addr_index(dev_ofnode(dev), index);
  81         else
  82                 return devfdt_get_addr_index(dev, index);
  83 }
  84
  85 void *dev_remap_addr_index(struct udevice *dev, int index)
  86 {
  87         fdt_addr_t addr = dev_read_addr_index(dev, index);
  88
  89         if (addr == FDT_ADDR_T_NONE)
  90                 return NULL;
  91
  92         return map_physmem(addr, 0, MAP_NOCACHE);
  93 }
  94
  95 fdt_addr_t dev_read_addr_name(struct udevice *dev, const char *name)
  96 {
  97         int index = dev_read_stringlist_search(dev, "reg-names", name);
  98
  99         if (index < 0)
 100                 return FDT_ADDR_T_NONE;
 101         else
 102                 return dev_read_addr_index(dev, index);
 103 }
 104
 105 void *dev_remap_addr_name(struct udevice *dev, const char *name)
 106 {
 107         fdt_addr_t addr = dev_read_addr_name(dev, name);
 108
 109         if (addr == FDT_ADDR_T_NONE)
 110                 return NULL;
 111
 112         return map_physmem(addr, 0, MAP_NOCACHE);
 113 }
 114
 115 fdt_addr_t dev_read_addr(struct udevice *dev)
 116 {
 117         return dev_read_addr_index(dev, 0);
 118 }
 119
 120 void *dev_read_addr_ptr(struct udevice *dev)
 121 {
 122         fdt_addr_t addr = dev_read_addr(dev);
 123
 124         return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0);
 125 }
 126
 127 void *dev_remap_addr(struct udevice *dev)
 128 {
 129         return dev_remap_addr_index(dev, 0);
 130 }
 131
 132 fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property,
 133                               fdt_size_t *sizep)
 134 {
 135         return ofnode_get_addr_size(dev_ofnode(dev), property, sizep);
 136 }
 137
 138 const char *dev_read_name(struct udevice *dev)
 139 {
 140         return ofnode_get_name(dev_ofnode(dev));
 141 }
 142
 143 int dev_read_stringlist_search(struct udevice *dev, const char *property,
 144                                const char *string)
 145 {
 146         return ofnode_stringlist_search(dev_ofnode(dev), property, string);
 147 }
 148
 149 int dev_read_string_index(struct udevice *dev, const char *propname, int index,
 150                           const char **outp)
 151 {
 152         return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
 153 }
 154
 155 int dev_read_string_count(struct udevice *dev, const char *propname)
 156 {
 157         return ofnode_read_string_count(dev_ofnode(dev), propname);
 158 }
 159
 160 int dev_read_phandle_with_args(struct udevice *dev, const char *list_name,
 161                                const char *cells_name, int cell_count,
 162                                int index, struct ofnode_phandle_args *out_args)
 163 {
 164         return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
 165                                               cells_name, cell_count, index,
 166                                               out_args);
 167 }
 168
 169 int dev_count_phandle_with_args(struct udevice *dev, const char *list_name,
 170                                 const char *cells_name)
 171 {
 172         return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
 173                                               cells_name);
 174 }
 175
 176 int dev_read_addr_cells(struct udevice *dev)
 177 {
 178         return ofnode_read_addr_cells(dev_ofnode(dev));
 179 }
 180
 181 int dev_read_size_cells(struct udevice *dev)
 182 {
 183         return ofnode_read_size_cells(dev_ofnode(dev));
 184 }
 185
 186 int dev_read_simple_addr_cells(struct udevice *dev)
 187 {
 188         return ofnode_read_simple_addr_cells(dev_ofnode(dev));
 189 }
 190
 191 int dev_read_simple_size_cells(struct udevice *dev)
 192 {
 193         return ofnode_read_simple_size_cells(dev_ofnode(dev));
 194 }
 195
 196 int dev_read_phandle(struct udevice *dev)
 197 {
 198         ofnode node = dev_ofnode(dev);
 199
 200         if (ofnode_is_np(node))
 201                 return ofnode_to_np(node)->phandle;
 202         else
 203                 return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
 204 }
 205
 206 const void *dev_read_prop(struct udevice *dev, const char *propname, int *lenp)
 207 {
 208         return ofnode_get_property(dev_ofnode(dev), propname, lenp);
 209 }
 210
 211 int dev_read_alias_seq(struct udevice *dev, int *devnump)
 212 {
 213         ofnode node = dev_ofnode(dev);
 214         const char *uc_name = dev->uclass->uc_drv->name;
 215         int ret;
 216
 217         if (ofnode_is_np(node)) {
 218                 ret = of_alias_get_id(ofnode_to_np(node), uc_name);
 219                 if (ret >= 0)
 220                         *devnump = ret;
 221         } else {
 222                 ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
 223                                            ofnode_to_offset(node), devnump);
 224         }
 225
 226         return ret;
 227 }
 228
 229 int dev_read_u32_array(struct udevice *dev, const char *propname,
 230                        u32 *out_values, size_t sz)
 231 {
 232         return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
 233 }
 234
 235 const uint8_t *dev_read_u8_array_ptr(struct udevice *dev, const char *propname,
 236                                      size_t sz)
 237 {
 238         return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
 239 }
 240
 241 int dev_read_enabled(struct udevice *dev)
 242 {
 243         ofnode node = dev_ofnode(dev);
 244
 245         if (ofnode_is_np(node))
 246                 return of_device_is_available(ofnode_to_np(node));
 247         else
 248                 return fdtdec_get_is_enabled(gd->fdt_blob,
 249                                              ofnode_to_offset(node));
 250 }
 251
 252 int dev_read_resource(struct udevice *dev, uint index, struct resource *res)
 253 {
 254         return ofnode_read_resource(dev_ofnode(dev), index, res);
 255 }
 256
 257 int dev_read_resource_byname(struct udevice *dev, const char *name,
 258                              struct resource *res)
 259 {
 260         return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
 261 }
 262
 263 u64 dev_translate_address(struct udevice *dev, const fdt32_t *in_addr)
 264 {
 265         return ofnode_translate_address(dev_ofnode(dev), in_addr);
 266 }