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 #define IR_TYPE_UNKNOWN 0
  25 #define IR_TYPE_RC5     (1  << 0)       /* Philips RC5 protocol */
  26 #define IR_TYPE_PD      (1  << 1)       /* Pulse distance encoded IR */
  27 #define IR_TYPE_NEC     (1  << 2)
  28 #define IR_TYPE_OTHER   (((u64)1) << 63l)
  29
  30 struct ir_scancode {
  31         u16     scancode;
  32         u32     keycode;
  33 };
  34
  35 struct ir_scancode_table {
  36         struct ir_scancode      *scan;
  37         int                     size;
  38         u64             ir_type;
  39         spinlock_t              lock;
  40 };
  41
  42 struct ir_dev_props {
  43         unsigned long allowed_protos;
  44         void            *priv;
  45         int (*change_protocol)(void *priv, u64 ir_type);
  46 };
  47
  48
  49 struct ir_input_dev {
  50         struct input_dev                *dev;           /* Input device*/
  51         struct ir_scancode_table        rc_tab;         /* scan/key table */
  52         unsigned long                   devno;          /* device number */
  53         struct attribute_group          attr;           /* IR attributes */
  54         struct device                   *class_dev;     /* virtual class dev */
  55         const struct ir_dev_props       *props;         /* Device properties */
  56 };
  57 #define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)
  58
  59 /* Routines from ir-keytable.c */
  60
  61 u32 ir_g_keycode_from_table(struct input_dev *input_dev,
  62                             u32 scancode);
  63
  64 int ir_input_register(struct input_dev *dev,
  65                       const struct ir_scancode_table *ir_codes,
  66                       const struct ir_dev_props *props);
  67 void ir_input_unregister(struct input_dev *input_dev);
  68
  69 /* Routines from ir-sysfs.c */
  70
  71 int ir_register_class(struct input_dev *input_dev);
  72 void ir_unregister_class(struct input_dev *input_dev);
  73
  74 #endif