uboot/drivers/core/read.c
<<
>>
Prefs
   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 <common.h>
   8#include <dm.h>
   9#include <dm/of_access.h>
  10#include <mapmem.h>
  11#include <asm/global_data.h>
  12#include <asm/types.h>
  13#include <asm/io.h>
  14#include <linux/ioport.h>
  15
  16int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp)
  17{
  18        return ofnode_read_u32(dev_ofnode(dev), propname, outp);
  19}
  20
  21int dev_read_u32_default(const struct udevice *dev, const char *propname,
  22                         int def)
  23{
  24        return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  25}
  26
  27int dev_read_u32_index(struct udevice *dev, const char *propname, int index,
  28                       u32 *outp)
  29{
  30        return ofnode_read_u32_index(dev_ofnode(dev), propname, index, outp);
  31}
  32
  33u32 dev_read_u32_index_default(struct udevice *dev, const char *propname,
  34                               int index, u32 def)
  35{
  36        return ofnode_read_u32_index_default(dev_ofnode(dev), propname, index,
  37                                             def);
  38}
  39
  40int dev_read_s32(const struct udevice *dev, const char *propname, s32 *outp)
  41{
  42        return ofnode_read_u32(dev_ofnode(dev), propname, (u32 *)outp);
  43}
  44
  45int dev_read_s32_default(const struct udevice *dev, const char *propname,
  46                         int def)
  47{
  48        return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  49}
  50
  51int dev_read_u32u(const struct udevice *dev, const char *propname, uint *outp)
  52{
  53        u32 val;
  54        int ret;
  55
  56        ret = ofnode_read_u32(dev_ofnode(dev), propname, &val);
  57        if (ret)
  58                return ret;
  59        *outp = val;
  60
  61        return 0;
  62}
  63
  64int dev_read_u64(const struct udevice *dev, const char *propname, u64 *outp)
  65{
  66        return ofnode_read_u64(dev_ofnode(dev), propname, outp);
  67}
  68
  69u64 dev_read_u64_default(const struct udevice *dev, const char *propname,
  70                         u64 def)
  71{
  72        return ofnode_read_u64_default(dev_ofnode(dev), propname, def);
  73}
  74
  75const char *dev_read_string(const struct udevice *dev, const char *propname)
  76{
  77        return ofnode_read_string(dev_ofnode(dev), propname);
  78}
  79
  80bool dev_read_bool(const struct udevice *dev, const char *propname)
  81{
  82        return ofnode_read_bool(dev_ofnode(dev), propname);
  83}
  84
  85ofnode dev_read_subnode(const struct udevice *dev, const char *subnode_name)
  86{
  87        return ofnode_find_subnode(dev_ofnode(dev), subnode_name);
  88}
  89
  90ofnode dev_read_first_subnode(const struct udevice *dev)
  91{
  92        return ofnode_first_subnode(dev_ofnode(dev));
  93}
  94
  95ofnode dev_read_next_subnode(ofnode node)
  96{
  97        return ofnode_next_subnode(node);
  98}
  99
 100int dev_read_size(const struct udevice *dev, const char *propname)
 101{
 102        return ofnode_read_size(dev_ofnode(dev), propname);
 103}
 104
 105fdt_addr_t dev_read_addr_index(const struct udevice *dev, int index)
 106{
 107        if (ofnode_is_np(dev_ofnode(dev)))
 108                return ofnode_get_addr_index(dev_ofnode(dev), index);
 109        else
 110                return devfdt_get_addr_index(dev, index);
 111}
 112
 113fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index,
 114                                    fdt_size_t *size)
 115{
 116        if (ofnode_is_np(dev_ofnode(dev)))
 117                return ofnode_get_addr_size_index(dev_ofnode(dev), index, size);
 118        else
 119                return devfdt_get_addr_size_index(dev, index, size);
 120}
 121
 122void *dev_remap_addr_index(const struct udevice *dev, int index)
 123{
 124        fdt_addr_t addr = dev_read_addr_index(dev, index);
 125
 126        if (addr == FDT_ADDR_T_NONE)
 127                return NULL;
 128
 129        return map_physmem(addr, 0, MAP_NOCACHE);
 130}
 131
 132fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name)
 133{
 134        int index = dev_read_stringlist_search(dev, "reg-names", name);
 135
 136        if (index < 0)
 137                return FDT_ADDR_T_NONE;
 138        else
 139                return dev_read_addr_index(dev, index);
 140}
 141
 142fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
 143                                   fdt_size_t *size)
 144{
 145        int index = dev_read_stringlist_search(dev, "reg-names", name);
 146
 147        if (index < 0)
 148                return FDT_ADDR_T_NONE;
 149        else
 150                return dev_read_addr_size_index(dev, index, size);
 151}
 152
 153void *dev_remap_addr_name(const struct udevice *dev, const char *name)
 154{
 155        fdt_addr_t addr = dev_read_addr_name(dev, name);
 156
 157        if (addr == FDT_ADDR_T_NONE)
 158                return NULL;
 159
 160        return map_physmem(addr, 0, MAP_NOCACHE);
 161}
 162
 163fdt_addr_t dev_read_addr(const struct udevice *dev)
 164{
 165        return dev_read_addr_index(dev, 0);
 166}
 167
 168void *dev_read_addr_ptr(const struct udevice *dev)
 169{
 170        fdt_addr_t addr = dev_read_addr(dev);
 171
 172        return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
 173}
 174
 175void *dev_remap_addr(const struct udevice *dev)
 176{
 177        return dev_remap_addr_index(dev, 0);
 178}
 179
 180fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *property,
 181                              fdt_size_t *sizep)
 182{
 183        return ofnode_get_addr_size(dev_ofnode(dev), property, sizep);
 184}
 185
 186const char *dev_read_name(const struct udevice *dev)
 187{
 188        return ofnode_get_name(dev_ofnode(dev));
 189}
 190
 191int dev_read_stringlist_search(const struct udevice *dev, const char *property,
 192                               const char *string)
 193{
 194        return ofnode_stringlist_search(dev_ofnode(dev), property, string);
 195}
 196
 197int dev_read_string_index(const struct udevice *dev, const char *propname,
 198                          int index, const char **outp)
 199{
 200        return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
 201}
 202
 203int dev_read_string_count(const struct udevice *dev, const char *propname)
 204{
 205        return ofnode_read_string_count(dev_ofnode(dev), propname);
 206}
 207
 208int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name,
 209                               const char *cells_name, int cell_count,
 210                               int index, struct ofnode_phandle_args *out_args)
 211{
 212        return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
 213                                              cells_name, cell_count, index,
 214                                              out_args);
 215}
 216
 217int dev_count_phandle_with_args(const struct udevice *dev,
 218                                const char *list_name, const char *cells_name,
 219                                int cell_count)
 220{
 221        return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
 222                                              cells_name, cell_count);
 223}
 224
 225int dev_read_addr_cells(const struct udevice *dev)
 226{
 227        return ofnode_read_addr_cells(dev_ofnode(dev));
 228}
 229
 230int dev_read_size_cells(const struct udevice *dev)
 231{
 232        return ofnode_read_size_cells(dev_ofnode(dev));
 233}
 234
 235int dev_read_simple_addr_cells(const struct udevice *dev)
 236{
 237        return ofnode_read_simple_addr_cells(dev_ofnode(dev));
 238}
 239
 240int dev_read_simple_size_cells(const struct udevice *dev)
 241{
 242        return ofnode_read_simple_size_cells(dev_ofnode(dev));
 243}
 244
 245int dev_read_phandle(const struct udevice *dev)
 246{
 247        ofnode node = dev_ofnode(dev);
 248
 249        if (ofnode_is_np(node))
 250                return ofnode_to_np(node)->phandle;
 251        else
 252                return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
 253}
 254
 255const void *dev_read_prop(const struct udevice *dev, const char *propname,
 256                          int *lenp)
 257{
 258        return ofnode_get_property(dev_ofnode(dev), propname, lenp);
 259}
 260
 261int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop)
 262{
 263        return ofnode_get_first_property(dev_ofnode(dev), prop);
 264}
 265
 266int dev_read_next_prop(struct ofprop *prop)
 267{
 268        return ofnode_get_next_property(prop);
 269}
 270
 271const void *dev_read_prop_by_prop(struct ofprop *prop,
 272                                  const char **propname, int *lenp)
 273{
 274        return ofnode_get_property_by_prop(prop, propname, lenp);
 275}
 276
 277int dev_read_alias_seq(const struct udevice *dev, int *devnump)
 278{
 279        ofnode node = dev_ofnode(dev);
 280        const char *uc_name = dev->uclass->uc_drv->name;
 281        int ret = -ENOTSUPP;
 282
 283        if (ofnode_is_np(node)) {
 284                ret = of_alias_get_id(ofnode_to_np(node), uc_name);
 285                if (ret >= 0) {
 286                        *devnump = ret;
 287                        ret = 0;
 288                }
 289        } else {
 290#if CONFIG_IS_ENABLED(OF_CONTROL)
 291                ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
 292                                           ofnode_to_offset(node), devnump);
 293#endif
 294        }
 295
 296        return ret;
 297}
 298
 299int dev_read_u32_array(const struct udevice *dev, const char *propname,
 300                       u32 *out_values, size_t sz)
 301{
 302        return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
 303}
 304
 305const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
 306                                     const char *propname, size_t sz)
 307{
 308        return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
 309}
 310
 311int dev_read_enabled(const struct udevice *dev)
 312{
 313        ofnode node = dev_ofnode(dev);
 314
 315        if (ofnode_is_np(node))
 316                return of_device_is_available(ofnode_to_np(node));
 317        else
 318                return fdtdec_get_is_enabled(gd->fdt_blob,
 319                                             ofnode_to_offset(node));
 320}
 321
 322int dev_read_resource(const struct udevice *dev, uint index,
 323                      struct resource *res)
 324{
 325        return ofnode_read_resource(dev_ofnode(dev), index, res);
 326}
 327
 328int dev_read_resource_byname(const struct udevice *dev, const char *name,
 329                             struct resource *res)
 330{
 331        return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
 332}
 333
 334u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr)
 335{
 336        return ofnode_translate_address(dev_ofnode(dev), in_addr);
 337}
 338
 339u64 dev_translate_dma_address(const struct udevice *dev, const fdt32_t *in_addr)
 340{
 341        return ofnode_translate_dma_address(dev_ofnode(dev), in_addr);
 342}
 343
 344int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu,
 345                      dma_addr_t *bus, u64 *size)
 346{
 347        return ofnode_get_dma_range(dev_ofnode(dev), cpu, bus, size);
 348}
 349
 350int dev_read_alias_highest_id(const char *stem)
 351{
 352        if (of_live_active())
 353                return of_alias_get_highest_id(stem);
 354
 355        return fdtdec_get_alias_highest_id(gd->fdt_blob, stem);
 356}
 357
 358fdt_addr_t dev_read_addr_pci(const struct udevice *dev)
 359{
 360        ulong addr;
 361
 362        addr = dev_read_addr(dev);
 363        if (addr == FDT_ADDR_T_NONE && !of_live_active())
 364                addr = devfdt_get_addr_pci(dev);
 365
 366        return addr;
 367}
 368
 369int dev_get_child_count(const struct udevice *dev)
 370{
 371        return ofnode_get_child_count(dev_ofnode(dev));
 372}
 373
 374int dev_read_pci_bus_range(const struct udevice *dev,
 375                           struct resource *res)
 376{
 377        const u32 *values;
 378        int len;
 379
 380        values = dev_read_prop(dev, "bus-range", &len);
 381        if (!values || len < sizeof(*values) * 2)
 382                return -EINVAL;
 383
 384        res->start = *values++;
 385        res->end = *values;
 386
 387        return 0;
 388}
 389
 390int dev_decode_display_timing(const struct udevice *dev, int index,
 391                              struct display_timing *config)
 392{
 393        return ofnode_decode_display_timing(dev_ofnode(dev), index, config);
 394}
 395