common/cmd_demo.c

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