linux/drivers/macintosh/via-pmu-event.c
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   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
  28static struct input_dev *pmu_input_dev;
  29
  30static 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
  59void 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
  80late_initcall(via_pmu_event_init);
  81
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