src/apps/powerstatus/APMDriverInterface.cpp

   1 /*
   2  * Copyright 2009-2015, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Clemens Zeidler, haiku@clemens-zeidler.de
   7  */
   8
   9
  10 #include "APMDriverInterface.h"
  11
  12 #include <arch/x86/apm_defs.h>
  13 #include <generic_syscall_defs.h>
  14 #include <syscalls.h>
  15
  16
  17 const bigtime_t kUpdateInterval = 2000000;
  18                 // every two seconds
  19
  20
  21 APMDriverInterface::~APMDriverInterface()
  22 {
  23 }
  24
  25
  26 status_t
  27 APMDriverInterface::Connect()
  28 {
  29         uint32 version = 0;
  30         status_t status = _kern_generic_syscall(APM_SYSCALLS, B_SYSCALL_INFO,
  31                 &version, sizeof(version));
  32         if (status == B_OK) {
  33                 battery_info info;
  34                 status = _kern_generic_syscall(APM_SYSCALLS, APM_GET_BATTERY_INFO,
  35                         &info, sizeof(battery_info));
  36         }
  37
  38         return status;
  39 }
  40
  41
  42 status_t
  43 APMDriverInterface::GetBatteryInfo(int32 index, battery_info* info)
  44 {
  45         if (index != 0)
  46                 return B_BAD_VALUE;
  47
  48         info->current_rate = -1;
  49
  50         apm_battery_info apmInfo;
  51         status_t status = _kern_generic_syscall(APM_SYSCALLS, APM_GET_BATTERY_INFO,
  52                 &apmInfo, sizeof(apm_battery_info));
  53         if (status == B_OK) {
  54                 info->state = apmInfo.online ? BATTERY_CHARGING : BATTERY_DISCHARGING;
  55                 info->capacity = apmInfo.percent;
  56                 info->full_capacity = 100;
  57                 info->time_left = apmInfo.time_left;
  58         }
  59
  60         return status;
  61 }
  62
  63
  64 status_t
  65 APMDriverInterface::GetExtendedBatteryInfo(int32 index,
  66         acpi_extended_battery_info* info)
  67 {
  68         return B_NOT_SUPPORTED;
  69 }
  70
  71
  72 int32
  73 APMDriverInterface::GetBatteryCount()
  74 {
  75         return 1;
  76 }
  77
  78
  79 void
  80 APMDriverInterface::_WatchPowerStatus()
  81 {
  82         while (atomic_get(&fIsWatching) > 0) {
  83                 Broadcast(kMsgUpdate);
  84                 acquire_sem_etc(fWaitSem, 1, B_RELATIVE_TIMEOUT, kUpdateInterval);
  85         }
  86 }