drivers/board/sandbox.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2018
   4  * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <board.h>
  10
  11 #include "sandbox.h"
  12
  13 struct board_sandbox_priv {
  14         bool called_detect;
  15         int test_i1;
  16         int test_i2;
  17 };
  18
  19 char vacation_spots[][64] = {"R'lyeh", "Dreamlands", "Plateau of Leng",
  20                              "Carcosa", "Yuggoth", "The Nameless City"};
  21
  22 int board_sandbox_detect(struct udevice *dev)
  23 {
  24         struct board_sandbox_priv *priv = dev_get_priv(dev);
  25
  26         priv->called_detect = true;
  27         priv->test_i2 = 100;
  28
  29         return 0;
  30 }
  31
  32 int board_sandbox_get_bool(struct udevice *dev, int id, bool *val)
  33 {
  34         struct board_sandbox_priv *priv = dev_get_priv(dev);
  35
  36         switch (id) {
  37         case BOOL_CALLED_DETECT:
  38                 /* Checks if the dectect method has been called */
  39                 *val = priv->called_detect;
  40                 return 0;
  41         }
  42
  43         return -ENOENT;
  44 }
  45
  46 int board_sandbox_get_int(struct udevice *dev, int id, int *val)
  47 {
  48         struct board_sandbox_priv *priv = dev_get_priv(dev);
  49
  50         switch (id) {
  51         case INT_TEST1:
  52                 *val = priv->test_i1;
  53                 /* Increments with every call */
  54                 priv->test_i1++;
  55                 return 0;
  56         case INT_TEST2:
  57                 *val = priv->test_i2;
  58                 /* Decrements with every call */
  59                 priv->test_i2--;
  60                 return 0;
  61         }
  62
  63         return -ENOENT;
  64 }
  65
  66 int board_sandbox_get_str(struct udevice *dev, int id, size_t size, char *val)
  67 {
  68         struct board_sandbox_priv *priv = dev_get_priv(dev);
  69         int i1 = priv->test_i1;
  70         int i2 = priv->test_i2;
  71         int index = (i1 * i2) % ARRAY_SIZE(vacation_spots);
  72
  73         switch (id) {
  74         case STR_VACATIONSPOT:
  75                 /* Picks a vacation spot depending on i1 and i2 */
  76                 snprintf(val, size, vacation_spots[index]);
  77                 return 0;
  78         }
  79
  80         return -ENOENT;
  81 }
  82
  83 static const struct udevice_id board_sandbox_ids[] = {
  84         { .compatible = "sandbox,board_sandbox" },
  85         { /* sentinel */ }
  86 };
  87
  88 static const struct board_ops board_sandbox_ops = {
  89         .detect = board_sandbox_detect,
  90         .get_bool = board_sandbox_get_bool,
  91         .get_int = board_sandbox_get_int,
  92         .get_str = board_sandbox_get_str,
  93 };
  94
  95 int board_sandbox_probe(struct udevice *dev)
  96 {
  97         return 0;
  98 }
  99
 100 U_BOOT_DRIVER(board_sandbox) = {
 101         .name           = "board_sandbox",
 102         .id             = UCLASS_BOARD,
 103         .of_match       = board_sandbox_ids,
 104         .ops            = &board_sandbox_ops,
 105         .priv_auto_alloc_size = sizeof(struct board_sandbox_priv),
 106         .probe          = board_sandbox_probe,
 107 };