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