target/linux/ubicom32/files/arch/ubicom32/include/asm/ubicom32input.h

   1 /*
   2  * arch/ubicom32/include/asm/ubicom32input.h
   3  *   Ubicom32 Input driver, based on gpio-keys
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  *
   7  * This file is part of the Ubicom32 Linux Kernel Port.
   8  *
   9  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  10  * it and/or modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation, either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  15  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  16  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  * the GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with the Ubicom32 Linux Kernel Port.  If not,
  21  * see <http://www.gnu.org/licenses/>.
  22  *
  23  * Ubicom32 implementation derived from (with many thanks):
  24  *   arch/m68knommu
  25  *   arch/blackfin
  26  *   arch/parisc
  27  *
  28  * TODO: add groups for inputs which can be sampled together
  29  */
  30
  31 #ifndef _ASM_UBICOM32_UBICOM32_INPUT_H
  32 #define _ASM_UBICOM32_UBICOM32_INPUT_H
  33
  34 struct ubicom32input_button {
  35         /*
  36          * Input event code (KEY_*, SW_*, etc)
  37          */
  38         int             code;
  39
  40         /*
  41          * Input event type (EV_KEY, EV_SW, etc)
  42          */
  43         int             type;
  44
  45         /*
  46          * GPIO to poll
  47          */
  48         int             gpio;
  49
  50         /*
  51          * 1 for active low, 0 for active high
  52          */
  53         int             active_low;
  54
  55         /*
  56          * Description, used for reserving GPIOs
  57          */
  58         const char      *desc;
  59 };
  60
  61 struct ubicom32input_platform_data {
  62         struct ubicom32input_button     *buttons;
  63         int                             nbuttons;
  64
  65         /*
  66          * Optional poll interval, in ms, defaults to 50ms
  67          */
  68         int                             poll_interval;
  69
  70         /*
  71          * Option Name of this driver
  72          */
  73         const char                      *name;
  74 };
  75
  76 #endif /* _ASM_UBICOM32_UBICOM32_INPUT_H */