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 fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property,
  61                                 fdt_size_t *sizep)
  62 {
  63         return ofnode_get_addr_size(dev_ofnode(dev), property, sizep);
  64 }
  65
  66 const char *dev_read_name(struct udevice *dev)
  67 {
  68         return ofnode_get_name(dev_ofnode(dev));
  69 }
  70
  71 int dev_read_stringlist_search(struct udevice *dev, const char *property,
  72                           const char *string)
  73 {
  74         return ofnode_stringlist_search(dev_ofnode(dev), property, string);
  75 }
  76
  77 int dev_read_phandle_with_args(struct udevice *dev, const char *list_name,
  78                                 const char *cells_name, int cell_count,
  79                                 int index,
  80                                 struct ofnode_phandle_args *out_args)
  81 {
  82         return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
  83                                               cells_name, cell_count, index,
  84                                               out_args);
  85 }
  86
  87 int dev_read_addr_cells(struct udevice *dev)
  88 {
  89         return ofnode_read_addr_cells(dev_ofnode(dev));
  90 }
  91
  92 int dev_read_size_cells(struct udevice *dev)
  93 {
  94         return ofnode_read_size_cells(dev_ofnode(dev));
  95 }
  96
  97 int dev_read_simple_addr_cells(struct udevice *dev)
  98 {
  99         return ofnode_read_simple_addr_cells(dev_ofnode(dev));
 100 }
 101
 102 int dev_read_simple_size_cells(struct udevice *dev)
 103 {
 104         return ofnode_read_simple_size_cells(dev_ofnode(dev));
 105 }
 106
 107 int dev_read_phandle(struct udevice *dev)
 108 {
 109         ofnode node = dev_ofnode(dev);
 110
 111         if (ofnode_is_np(node))
 112                 return ofnode_to_np(node)->phandle;
 113         else
 114                 return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
 115 }
 116
 117 const u32 *dev_read_prop(struct udevice *dev, const char *propname, int *lenp)
 118 {
 119         return ofnode_get_property(dev_ofnode(dev), propname, lenp);
 120 }
 121
 122 int dev_read_alias_seq(struct udevice *dev, int *devnump)
 123 {
 124         ofnode node = dev_ofnode(dev);
 125         const char *uc_name = dev->uclass->uc_drv->name;
 126         int ret;
 127
 128         if (ofnode_is_np(node)) {
 129                 ret = of_alias_get_id(ofnode_to_np(node), uc_name);
 130                 if (ret >= 0)
 131                         *devnump = ret;
 132         } else {
 133                 ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
 134                                            ofnode_to_offset(node), devnump);
 135         }
 136
 137         return ret;
 138 }
 139
 140 int dev_read_u32_array(struct udevice *dev, const char *propname,
 141                        u32 *out_values, size_t sz)
 142 {
 143         return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
 144 }
 145
 146 const uint8_t *dev_read_u8_array_ptr(struct udevice *dev, const char *propname,
 147                                      size_t sz)
 148 {
 149         return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
 150 }
 151
 152 int dev_read_enabled(struct udevice *dev)
 153 {
 154         ofnode node = dev_ofnode(dev);
 155
 156         if (ofnode_is_np(node))
 157                 return of_device_is_available(ofnode_to_np(node));
 158         else
 159                 return fdtdec_get_is_enabled(gd->fdt_blob,
 160                                              ofnode_to_offset(node));
 161 }