cmd/temperature.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 /*
   4  * Copyright (c) 2022 Sartura Ltd.
   5  * Written by Robert Marko <robert.marko@sartura.hr>
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <dm.h>
  11 #include <thermal.h>
  12
  13 #define LIMIT_DEVNAME   30
  14
  15 static int do_get(struct cmd_tbl *cmdtp, int flag, int argc,
  16                   char *const argv[])
  17 {
  18         struct udevice *dev;
  19         int ret, temp;
  20
  21         if (argc < 2) {
  22                 printf("thermal device not selected\n");
  23                 return CMD_RET_FAILURE;
  24         }
  25
  26         ret = uclass_get_device_by_name(UCLASS_THERMAL, argv[1], &dev);
  27         if (ret) {
  28                 printf("thermal device not found\n");
  29                 return CMD_RET_FAILURE;
  30         }
  31
  32         ret = thermal_get_temp(dev, &temp);
  33         if (ret)
  34                 return CMD_RET_FAILURE;
  35
  36         printf("%s: %d C\n", dev->name, temp);
  37
  38         return CMD_RET_SUCCESS;
  39 }
  40
  41 static int do_list(struct cmd_tbl *cmdtp, int flag, int argc,
  42                    char *const argv[])
  43 {
  44         struct udevice *dev;
  45
  46         printf("| %-*.*s| %-*.*s| %s\n",
  47                LIMIT_DEVNAME, LIMIT_DEVNAME, "Device",
  48                LIMIT_DEVNAME, LIMIT_DEVNAME, "Driver",
  49                "Parent");
  50
  51         uclass_foreach_dev_probe(UCLASS_THERMAL, dev) {
  52                 printf("| %-*.*s| %-*.*s| %s\n",
  53                        LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
  54                        LIMIT_DEVNAME, LIMIT_DEVNAME, dev->driver->name,
  55                        dev->parent->name);
  56         }
  57
  58         return CMD_RET_SUCCESS;
  59 }
  60
  61 static struct cmd_tbl temperature_subcmd[] = {
  62         U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
  63         U_BOOT_CMD_MKENT(get, 2, 1, do_get, "", ""),
  64 };
  65
  66 static int do_temperature(struct cmd_tbl *cmdtp, int flag, int argc,
  67                           char *const argv[])
  68 {
  69         struct cmd_tbl *cmd;
  70
  71         argc--;
  72         argv++;
  73
  74         cmd = find_cmd_tbl(argv[0], temperature_subcmd, ARRAY_SIZE(temperature_subcmd));
  75         if (!cmd || argc > cmd->maxargs)
  76                 return CMD_RET_USAGE;
  77
  78         return cmd->cmd(cmdtp, flag, argc, argv);
  79 }
  80
  81 U_BOOT_CMD(temperature, CONFIG_SYS_MAXARGS, 1, do_temperature,
  82            "thermal sensor temperature",
  83            "list\t\tshow list of temperature sensors\n"
  84            "get [thermal device name]\tprint temperature in degrees C"
  85 );