784a493168
This patch adds an RC6 decoder (modes 0 and 6A) to ir-core. Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
119 lines
3.5 KiB
C
119 lines
3.5 KiB
C
/*
|
|
* Remote Controller core raw events header
|
|
*
|
|
* Copyright (C) 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_RAW_EVENT
|
|
#define _IR_RAW_EVENT
|
|
|
|
#include <linux/slab.h>
|
|
#include <media/ir-core.h>
|
|
|
|
struct ir_raw_handler {
|
|
struct list_head list;
|
|
|
|
int (*decode)(struct input_dev *input_dev, s64 duration);
|
|
int (*raw_register)(struct input_dev *input_dev);
|
|
int (*raw_unregister)(struct input_dev *input_dev);
|
|
};
|
|
|
|
struct ir_raw_event_ctrl {
|
|
struct work_struct rx_work; /* for the rx decoding workqueue */
|
|
struct kfifo kfifo; /* fifo for the pulse/space durations */
|
|
ktime_t last_event; /* when last event occurred */
|
|
enum raw_event_type last_type; /* last event type */
|
|
struct input_dev *input_dev; /* pointer to the parent input_dev */
|
|
};
|
|
|
|
/* macros for IR decoders */
|
|
#define PULSE(units) ((units))
|
|
#define SPACE(units) (-(units))
|
|
#define IS_RESET(duration) ((duration) == 0)
|
|
#define IS_PULSE(duration) ((duration) > 0)
|
|
#define IS_SPACE(duration) ((duration) < 0)
|
|
#define DURATION(duration) (abs((duration)))
|
|
#define IS_TRANSITION(x, y) ((x) * (y) < 0)
|
|
#define DECREASE_DURATION(duration, amount) \
|
|
do { \
|
|
if (IS_SPACE(duration)) \
|
|
duration += (amount); \
|
|
else if (IS_PULSE(duration)) \
|
|
duration -= (amount); \
|
|
} while (0)
|
|
|
|
#define TO_UNITS(duration, unit_len) \
|
|
((int)((duration) > 0 ? \
|
|
DIV_ROUND_CLOSEST(abs((duration)), (unit_len)) :\
|
|
-DIV_ROUND_CLOSEST(abs((duration)), (unit_len))))
|
|
#define TO_US(duration) ((int)TO_UNITS(duration, 1000))
|
|
|
|
/*
|
|
* Routines from ir-keytable.c to be used internally on ir-core and decoders
|
|
*/
|
|
|
|
u32 ir_g_keycode_from_table(struct input_dev *input_dev,
|
|
u32 scancode);
|
|
|
|
/*
|
|
* Routines from ir-sysfs.c - Meant to be called only internally inside
|
|
* ir-core
|
|
*/
|
|
|
|
int ir_register_class(struct input_dev *input_dev);
|
|
void ir_unregister_class(struct input_dev *input_dev);
|
|
|
|
/*
|
|
* Routines from ir-raw-event.c to be used internally and by decoders
|
|
*/
|
|
int ir_raw_event_register(struct input_dev *input_dev);
|
|
void ir_raw_event_unregister(struct input_dev *input_dev);
|
|
static inline void ir_raw_event_reset(struct input_dev *input_dev)
|
|
{
|
|
ir_raw_event_store(input_dev, 0);
|
|
ir_raw_event_handle(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);
|
|
|
|
|
|
/*
|
|
* Decoder initialization code
|
|
*
|
|
* Those load logic are called during ir-core init, and automatically
|
|
* loads the compiled decoders for their usage with IR raw events
|
|
*/
|
|
|
|
/* 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
|
|
|
|
/* from ir-rc5-decoder.c */
|
|
#ifdef CONFIG_IR_RC5_DECODER_MODULE
|
|
#define load_rc5_decode() request_module("ir-rc5-decoder")
|
|
#else
|
|
#define load_rc5_decode() 0
|
|
#endif
|
|
|
|
/* from ir-rc6-decoder.c */
|
|
#ifdef CONFIG_IR_RC5_DECODER_MODULE
|
|
#define load_rc6_decode() request_module("ir-rc6-decoder")
|
|
#else
|
|
#define load_rc6_decode() 0
|
|
#endif
|
|
|
|
#endif /* _IR_RAW_EVENT */
|