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