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/*
* Remote Controller core header
*
* Copyright (C) 2009-2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _IR_CORE
#define _IR_CORE
#include <linux/input.h>
#include <linux/spinlock.h>
#include <linux/kfifo.h>
#include <linux/time.h>
#include <linux/timer.h>
#include <media/rc-map.h>
extern int ir_core_debug;
#define IR_dprintk(level, fmt, arg...) if (ir_core_debug >= level) \
printk(KERN_DEBUG "%s: " fmt , __func__, ## arg)
#define IR_TYPE_UNKNOWN 0
#define IR_TYPE_RC5 (1 << 0) /* Philips RC5 protocol */
#define IR_TYPE_PD (1 << 1) /* Pulse distance encoded IR */
#define IR_TYPE_NEC (1 << 2)
#define IR_TYPE_OTHER (((u64)1) << 63l)
enum raw_event_type {
IR_SPACE = (1 << 0),
IR_PULSE = (1 << 1),
IR_START_EVENT = (1 << 2),
IR_STOP_EVENT = (1 << 3),
};
struct ir_scancode {
u16 scancode;
u32 keycode;
};
struct ir_scancode_table {
struct ir_scancode *scan;
unsigned int size; /* Max number of entries */
unsigned int len; /* Used number of entries */
unsigned int alloc; /* Size of *scan in bytes */
u64 ir_type;
char *name;
spinlock_t lock;
};
struct rc_keymap {
struct list_head list;
struct ir_scancode_table map;
};
struct ir_dev_props {
unsigned long allowed_protos;
void *priv;
int (*change_protocol)(void *priv, u64 ir_type);
int (*open)(void *priv);
void (*close)(void *priv);
};
struct ir_raw_event {
struct timespec delta; /* Time spent before event */
enum raw_event_type type; /* event type */
};
struct ir_raw_event_ctrl {
struct kfifo kfifo; /* fifo for the pulse/space events */
struct timespec last_event; /* when last event occurred */
};
struct ir_input_dev {
struct device dev; /* device */
char *driver_name; /* Name of the driver module */
struct ir_scancode_table rc_tab; /* scan/key table */
unsigned long devno; /* device number */
const struct ir_dev_props *props; /* Device properties */
struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */
struct input_dev *input_dev; /* the input device associated with this device */
/* key info - needed by IR keycode handlers */
spinlock_t keylock; /* protects the below members */
bool keypressed; /* current state */
unsigned long keyup_jiffies; /* when should the current keypress be released? */
struct timer_list timer_keyup; /* timer for releasing a keypress */
u32 last_keycode; /* keycode of last command */
u32 last_scancode; /* scancode of last command */
u8 last_toggle; /* toggle of last command */
};
struct ir_raw_handler {
struct list_head list;
int (*decode)(struct input_dev *input_dev,
struct ir_raw_event *evs,
int len);
int (*raw_register)(struct input_dev *input_dev);
int (*raw_unregister)(struct input_dev *input_dev);
};
#define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)
/* Routines from rc-map.c */
int ir_register_map(struct rc_keymap *map);
void ir_unregister_map(struct rc_keymap *map);
struct ir_scancode_table *get_rc_map(const char *name);
void rc_map_init(void);
/* Routines from ir-keytable.c */
u32 ir_g_keycode_from_table(struct input_dev *input_dev,
u32 scancode);
void ir_repeat(struct input_dev *dev);
void ir_keydown(struct input_dev *dev, int scancode, u8 toggle);
int __ir_input_register(struct input_dev *dev,
const struct ir_scancode_table *ir_codes,
const struct ir_dev_props *props,
const char *driver_name);
static inline int ir_input_register(struct input_dev *dev,
const char *map_name,
const struct ir_dev_props *props,
const char *driver_name) {
struct ir_scancode_table *ir_codes;
struct ir_input_dev *ir_dev;
int rc;
if (!map_name)
return -EINVAL;
ir_codes = get_rc_map(map_name);
if (!ir_codes)
return -EINVAL;
rc = __ir_input_register(dev, ir_codes, props, driver_name);
if (rc < 0)
return -EINVAL;
ir_dev = input_get_drvdata(dev);
if (!rc && ir_dev->props && ir_dev->props->change_protocol)
rc = ir_dev->props->change_protocol(ir_dev->props->priv,
ir_codes->ir_type);
return rc;
}
void ir_input_unregister(struct input_dev *input_dev);
/* Routines from ir-sysfs.c */
int ir_register_class(struct input_dev *input_dev);
void ir_unregister_class(struct input_dev *input_dev);
/* Routines from ir-raw-event.c */
int ir_raw_event_register(struct input_dev *input_dev);
void ir_raw_event_unregister(struct input_dev *input_dev);
int ir_raw_event_store(struct input_dev *input_dev, enum raw_event_type type);
int ir_raw_event_handle(struct input_dev *input_dev);
int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler);
void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler);
void ir_raw_init(void);
/* from ir-nec-decoder.c */
#ifdef CONFIG_IR_NEC_DECODER_MODULE
#define load_nec_decode() request_module("ir-nec-decoder")
#else
#define load_nec_decode() 0
#endif
#endif /* _IR_CORE */
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