2 * Remote Controller core raw events header
4 * Copyright (C) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <media/ir-core.h>
23 struct ir_raw_handler
{
24 struct list_head list
;
26 u64 protocols
; /* which are handled by this handler */
27 int (*decode
)(struct input_dev
*input_dev
, struct ir_raw_event event
);
29 /* These two should only be used by the lirc decoder */
30 int (*raw_register
)(struct input_dev
*input_dev
);
31 int (*raw_unregister
)(struct input_dev
*input_dev
);
34 struct ir_raw_event_ctrl
{
35 struct list_head list
; /* to keep track of raw clients */
36 struct task_struct
*thread
;
38 struct kfifo kfifo
; /* fifo for the pulse/space durations */
39 ktime_t last_event
; /* when last event occurred */
40 enum raw_event_type last_type
; /* last event type */
41 struct input_dev
*input_dev
; /* pointer to the parent input_dev */
42 u64 enabled_protocols
; /* enabled raw protocol decoders */
44 /* raw decoder state follows */
45 struct ir_raw_event prev_ev
;
46 struct ir_raw_event this_ev
;
88 struct ir_input_dev
*ir_dev
;
89 struct lirc_driver
*drv
;
95 bool send_timeout_reports
;
100 /* macros for IR decoders */
101 static inline bool geq_margin(unsigned d1
, unsigned d2
, unsigned margin
)
103 return d1
> (d2
- margin
);
106 static inline bool eq_margin(unsigned d1
, unsigned d2
, unsigned margin
)
108 return ((d1
> (d2
- margin
)) && (d1
< (d2
+ margin
)));
111 static inline bool is_transition(struct ir_raw_event
*x
, struct ir_raw_event
*y
)
113 return x
->pulse
!= y
->pulse
;
116 static inline void decrease_duration(struct ir_raw_event
*ev
, unsigned duration
)
118 if (duration
> ev
->duration
)
121 ev
->duration
-= duration
;
124 /* Returns true if event is normal pulse/space event */
125 static inline bool is_timing_event(struct ir_raw_event ev
)
127 return !ev
.carrier_report
&& !ev
.reset
;
130 #define TO_US(duration) DIV_ROUND_CLOSEST((duration), 1000)
131 #define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space")
133 * Routines from ir-sysfs.c - Meant to be called only internally inside
136 int ir_register_input(struct input_dev
*input_dev
);
138 int ir_register_class(struct input_dev
*input_dev
);
139 void ir_unregister_class(struct input_dev
*input_dev
);
142 * Routines from ir-raw-event.c to be used internally and by decoders
144 u64
ir_raw_get_allowed_protocols(void);
145 int ir_raw_event_register(struct input_dev
*input_dev
);
146 void ir_raw_event_unregister(struct input_dev
*input_dev
);
147 int ir_raw_handler_register(struct ir_raw_handler
*ir_raw_handler
);
148 void ir_raw_handler_unregister(struct ir_raw_handler
*ir_raw_handler
);
149 void ir_raw_init(void);
151 int ir_rcmap_init(void);
152 void ir_rcmap_cleanup(void);
154 * Decoder initialization code
156 * Those load logic are called during ir-core init, and automatically
157 * loads the compiled decoders for their usage with IR raw events
160 /* from ir-nec-decoder.c */
161 #ifdef CONFIG_IR_NEC_DECODER_MODULE
162 #define load_nec_decode() request_module("ir-nec-decoder")
164 #define load_nec_decode() 0
167 /* from ir-rc5-decoder.c */
168 #ifdef CONFIG_IR_RC5_DECODER_MODULE
169 #define load_rc5_decode() request_module("ir-rc5-decoder")
171 #define load_rc5_decode() 0
174 /* from ir-rc6-decoder.c */
175 #ifdef CONFIG_IR_RC6_DECODER_MODULE
176 #define load_rc6_decode() request_module("ir-rc6-decoder")
178 #define load_rc6_decode() 0
181 /* from ir-jvc-decoder.c */
182 #ifdef CONFIG_IR_JVC_DECODER_MODULE
183 #define load_jvc_decode() request_module("ir-jvc-decoder")
185 #define load_jvc_decode() 0
188 /* from ir-sony-decoder.c */
189 #ifdef CONFIG_IR_SONY_DECODER_MODULE
190 #define load_sony_decode() request_module("ir-sony-decoder")
192 #define load_sony_decode() 0
195 /* from ir-lirc-codec.c */
196 #ifdef CONFIG_IR_LIRC_CODEC_MODULE
197 #define load_lirc_codec() request_module("ir-lirc-codec")
199 #define load_lirc_codec() 0
203 #endif /* _IR_RAW_EVENT */
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