lunaix-os/kernel/time/clock.c

   1 #include <lunaix/clock.h>
   2 #include <lunaix/device.h>
   3 #include <lunaix/fs/twifs.h>
   4 #include <lunaix/spike.h>
   5
   6 #include <klibc/string.h>
   7
   8 void
   9 __clock_read_systime(struct twimap* map)
  10 {
  11     ticks_t sys_time = clock_systime();
  12     twimap_printf(map, "%u", sys_time);
  13 }
  14
  15 void
  16 __clock_read_datetime(struct twimap* map)
  17 {
  18     datetime_t dt;
  19     clock_walltime(&dt);
  20     twimap_printf(map,
  21                   "%.4d-%.2d-%.2d %.2d:%.2d:%.2d",
  22                   dt.year,
  23                   dt.month,
  24                   dt.day,
  25                   dt.hour,
  26                   dt.minute,
  27                   dt.second);
  28 }
  29
  30 void
  31 __clock_read_unix(struct twimap* map)
  32 {
  33     twimap_printf(map, "%u", clock_unixtime());
  34 }
  35
  36 void
  37 clock_build_mapping()
  38 {
  39     struct twifs_node* root = twifs_dir_node(NULL, "clock");
  40     struct twimap* map;
  41
  42     map = twifs_mapping(root, NULL, "systime");
  43     map->read = __clock_read_systime;
  44
  45     map = twifs_mapping(root, NULL, "unix");
  46     map->read = __clock_read_unix;
  47
  48     map = twifs_mapping(root, NULL, "datetime");
  49     map->read = __clock_read_datetime;
  50 }
  51 EXPORT_TWIFS_PLUGIN(sys_clock, clock_build_mapping);
  52
  53 time_t
  54 clock_unixtime()
  55 {
  56     datetime_t dt;
  57     hwrtc_walltime(&dt);
  58     return datetime_tounix(&dt);
  59 }
  60
  61 time_t
  62 clock_systime()
  63 {
  64     if (!systimer) {
  65         return 0;
  66     }
  67
  68     ticks_t t = hwtimer_current_systicks();
  69     ticks_t tu = systimer->running_freq / 1000;
  70     return t / (tu + 1);
  71 }
  72
  73 void
  74 clock_walltime(datetime_t* datetime)
  75 {
  76     sysrtc->get_walltime(sysrtc, datetime);
  77 }
  78
  79 void
  80 clock_init()
  81 {
  82     int idx = 0;
  83     struct device_def* pos;
  84     foreach_exported_device_of(load_timedev, idx, pos)
  85     {
  86         if (pos->class.device != DEV_RTC) {
  87             continue;
  88         }
  89
  90         pos->init(pos);
  91     }
  92 }