cmd/demo.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2013 Google, Inc
   4  *
   5  * (C) Copyright 2012
   6  * Pavel Herrmann <morpheus.ibis@gmail.com>
   7  */
   8
   9 #include <common.h>
  10 #include <command.h>
  11 #include <dm.h>
  12 #include <dm-demo.h>
  13 #include <mapmem.h>
  14 #include <asm/io.h>
  15
  16 struct udevice *demo_dev;
  17
  18 static int do_demo_hello(struct cmd_tbl *cmdtp, int flag, int argc,
  19                          char *const argv[])
  20 {
  21         int ch = 0;
  22
  23         if (argc)
  24                 ch = *argv[0];
  25
  26         return demo_hello(demo_dev, ch);
  27 }
  28
  29 static int do_demo_status(struct cmd_tbl *cmdtp, int flag, int argc,
  30                           char *const argv[])
  31 {
  32         int status;
  33         int ret;
  34
  35         ret = demo_status(demo_dev, &status);
  36         if (ret)
  37                 return ret;
  38
  39         printf("Status: %d\n", status);
  40
  41         return 0;
  42 }
  43
  44 static int do_demo_light(struct cmd_tbl *cmdtp, int flag, int argc,
  45                          char *const argv[])
  46 {
  47         int light;
  48         int ret;
  49
  50         if (argc) {
  51                 light = hextoul(argv[0], NULL);
  52                 ret = demo_set_light(demo_dev, light);
  53         } else {
  54                 ret = demo_get_light(demo_dev);
  55                 if (ret >= 0) {
  56                         printf("Light: %x\n", ret);
  57                         ret = 0;
  58                 }
  59         }
  60
  61         return ret;
  62 }
  63
  64 int do_demo_list(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
  65 {
  66         struct udevice *dev;
  67         int i, ret, err = 0;
  68
  69         puts("Demo uclass entries:\n");
  70
  71         for (i = 0, ret = uclass_first_device_check(UCLASS_DEMO, &dev);
  72              dev;
  73              ret = uclass_next_device_check(&dev)) {
  74                 printf("entry %d - instance %08x, ops %08x, plat %08x, status %i\n",
  75                        i++, (uint)map_to_sysmem(dev),
  76                        (uint)map_to_sysmem(dev->driver->ops),
  77                        (uint)map_to_sysmem(dev_get_plat(dev)),
  78                        ret);
  79                 if (ret)
  80                         err = ret;
  81         }
  82
  83         return cmd_process_error(cmdtp, err);
  84 }
  85
  86 static struct cmd_tbl demo_commands[] = {
  87         U_BOOT_CMD_MKENT(list, 0, 1, do_demo_list, "", ""),
  88         U_BOOT_CMD_MKENT(hello, 2, 1, do_demo_hello, "", ""),
  89         U_BOOT_CMD_MKENT(light, 2, 1, do_demo_light, "", ""),
  90         U_BOOT_CMD_MKENT(status, 1, 1, do_demo_status, "", ""),
  91 };
  92
  93 static int do_demo(struct cmd_tbl *cmdtp, int flag, int argc,
  94                    char *const argv[])
  95 {
  96         struct cmd_tbl *demo_cmd;
  97         int devnum = 0;
  98         int ret;
  99
 100         if (argc < 2)
 101                 return CMD_RET_USAGE;
 102         demo_cmd = find_cmd_tbl(argv[1], demo_commands,
 103                                 ARRAY_SIZE(demo_commands));
 104         argc -= 2;
 105         argv += 2;
 106
 107         if ((!demo_cmd || argc > demo_cmd->maxargs) ||
 108             ((demo_cmd->name[0] != 'l') && (argc < 1)))
 109                 return CMD_RET_USAGE;
 110
 111         if (argc) {
 112                 devnum = dectoul(argv[0], NULL);
 113                 ret = uclass_get_device(UCLASS_DEMO, devnum, &demo_dev);
 114                 if (ret)
 115                         return cmd_process_error(cmdtp, ret);
 116                 argc--;
 117                 argv++;
 118         } else {
 119                 demo_dev = NULL;
 120                 if (demo_cmd->cmd != do_demo_list)
 121                         return CMD_RET_USAGE;
 122         }
 123
 124         ret = demo_cmd->cmd(demo_cmd, flag, argc, argv);
 125
 126         return cmd_process_error(demo_cmd, ret);
 127 }
 128
 129 U_BOOT_CMD(
 130         demo,   4,      1,      do_demo,
 131         "Driver model (dm) demo operations",
 132         "list                     List available demo devices\n"
 133         "demo hello <num> [<char>]     Say hello\n"
 134         "demo light [<num>]            Set or get the lights\n"
 135         "demo status <num>             Get demo device status\n"
 136 );