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