drivers/macintosh/via-pmu-event.c

   1 /*
   2  * via-pmu event device for reporting some events that come through the PMU
   3  *
   4  * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  14  * NON INFRINGEMENT.  See the GNU General Public License for more
  15  * details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  20  *
  21  */
  22
  23 #include <linux/input.h>
  24 #include <linux/adb.h>
  25 #include <linux/pmu.h>
  26 #include "via-pmu-event.h"
  27
  28 static struct input_dev *pmu_input_dev;
  29
  30 static int __init via_pmu_event_init(void)
  31 {
  32         int err;
  33
  34         /* do other models report button/lid status? */
  35         if (pmu_get_model() != PMU_KEYLARGO_BASED)
  36                 return -ENODEV;
  37
  38         pmu_input_dev = input_allocate_device();
  39         if (!pmu_input_dev)
  40                 return -ENOMEM;
  41
  42         pmu_input_dev->name = "PMU";
  43         pmu_input_dev->id.bustype = BUS_HOST;
  44         pmu_input_dev->id.vendor = 0x0001;
  45         pmu_input_dev->id.product = 0x0001;
  46         pmu_input_dev->id.version = 0x0100;
  47
  48         set_bit(EV_KEY, pmu_input_dev->evbit);
  49         set_bit(EV_SW, pmu_input_dev->evbit);
  50         set_bit(KEY_POWER, pmu_input_dev->keybit);
  51         set_bit(SW_LID, pmu_input_dev->swbit);
  52
  53         err = input_register_device(pmu_input_dev);
  54         if (err)
  55                 input_free_device(pmu_input_dev);
  56         return err;
  57 }
  58
  59 void via_pmu_event(int key, int down)
  60 {
  61
  62         if (unlikely(!pmu_input_dev))
  63                 return;
  64
  65         switch (key) {
  66         case PMU_EVT_POWER:
  67                 input_report_key(pmu_input_dev, KEY_POWER, down);
  68                 break;
  69         case PMU_EVT_LID:
  70                 input_report_switch(pmu_input_dev, SW_LID, down);
  71                 break;
  72         default:
  73                 /* no such key handled */
  74                 return;
  75         }
  76
  77         input_sync(pmu_input_dev);
  78 }
  79
  80 late_initcall(via_pmu_event_init);