include/media/ir-core.h

   1 /*
   2  * Remote Controller core header
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation version 2 of the License.
   7  *
   8  *  This program is distributed in the hope that it will be useful,
   9  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *  GNU General Public License for more details.
  12  */
  13
  14 #ifndef _IR_CORE
  15 #define _IR_CORE
  16
  17 #include <linux/input.h>
  18 #include <linux/spinlock.h>
  19
  20 extern int ir_core_debug;
  21 #define IR_dprintk(level, fmt, arg...)  if (ir_core_debug >= level) \
  22         printk(KERN_DEBUG "%s: " fmt , __func__, ## arg)
  23
  24 enum ir_type {
  25         IR_TYPE_UNKNOWN = 0,
  26         IR_TYPE_RC5     = 1,
  27         IR_TYPE_PD      = 2,             /* Pulse distance encoded IR */
  28         IR_TYPE_NEC     = 3,
  29         IR_TYPE_OTHER   = 99,
  30 };
  31
  32 struct ir_scancode {
  33         u16     scancode;
  34         u32     keycode;
  35 };
  36
  37 struct ir_scancode_table {
  38         struct ir_scancode      *scan;
  39         int                     size;
  40         enum                    ir_type ir_type;
  41         spinlock_t              lock;
  42 };
  43
  44 struct ir_input_dev {
  45         struct input_dev                *dev;
  46         struct ir_scancode_table        rc_tab;
  47 };
  48
  49 /* Routines from ir-keytable.c */
  50
  51 u32 ir_g_keycode_from_table(struct input_dev *input_dev,
  52                             u32 scancode);
  53
  54 int ir_set_keycode_table(struct input_dev *input_dev,
  55                          struct ir_scancode_table *rc_tab);
  56
  57 int ir_roundup_tablesize(int n_elems);
  58 int ir_input_register(struct input_dev *dev,
  59                       struct ir_scancode_table *ir_codes);
  60 void ir_input_unregister(struct input_dev *input_dev);
  61
  62 #endif