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3f113e36 MCC |
1 | /* |
2 | * Remote Controller core raw events header | |
3 | * | |
4 | * Copyright (C) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com> | |
5 | * | |
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. | |
9 | * | |
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. | |
14 | */ | |
15 | ||
16 | #ifndef _IR_RAW_EVENT | |
17 | #define _IR_RAW_EVENT | |
18 | ||
19 | #include <linux/slab.h> | |
20 | #include <media/ir-core.h> | |
21 | ||
22 | struct ir_raw_handler { | |
23 | struct list_head list; | |
24 | ||
667c9ebe | 25 | u64 protocols; /* which are handled by this handler */ |
e40b1127 | 26 | int (*decode)(struct input_dev *input_dev, struct ir_raw_event event); |
c216369e DH |
27 | |
28 | /* These two should only be used by the lirc decoder */ | |
3f113e36 MCC |
29 | int (*raw_register)(struct input_dev *input_dev); |
30 | int (*raw_unregister)(struct input_dev *input_dev); | |
31 | }; | |
32 | ||
33 | struct ir_raw_event_ctrl { | |
c216369e | 34 | struct list_head list; /* to keep track of raw clients */ |
3f113e36 MCC |
35 | struct work_struct rx_work; /* for the rx decoding workqueue */ |
36 | struct kfifo kfifo; /* fifo for the pulse/space durations */ | |
37 | ktime_t last_event; /* when last event occurred */ | |
38 | enum raw_event_type last_type; /* last event type */ | |
39 | struct input_dev *input_dev; /* pointer to the parent input_dev */ | |
667c9ebe | 40 | u64 enabled_protocols; /* enabled raw protocol decoders */ |
c216369e DH |
41 | |
42 | /* raw decoder state follows */ | |
43 | struct ir_raw_event prev_ev; | |
44 | struct nec_dec { | |
45 | int state; | |
46 | unsigned count; | |
47 | u32 bits; | |
48 | } nec; | |
49 | struct rc5_dec { | |
50 | int state; | |
51 | u32 bits; | |
52 | unsigned count; | |
53 | unsigned wanted_bits; | |
54 | } rc5; | |
55 | struct rc6_dec { | |
56 | int state; | |
57 | u8 header; | |
58 | u32 body; | |
59 | bool toggle; | |
60 | unsigned count; | |
61 | unsigned wanted_bits; | |
62 | } rc6; | |
63 | struct sony_dec { | |
64 | int state; | |
65 | u32 bits; | |
66 | unsigned count; | |
67 | } sony; | |
68 | struct jvc_dec { | |
69 | int state; | |
70 | u16 bits; | |
71 | u16 old_bits; | |
72 | unsigned count; | |
73 | bool first; | |
74 | bool toggle; | |
75 | } jvc; | |
ca414698 JW |
76 | struct lirc_codec { |
77 | struct ir_input_dev *ir_dev; | |
78 | struct lirc_driver *drv; | |
ca414698 | 79 | } lirc; |
3f113e36 MCC |
80 | }; |
81 | ||
82 | /* macros for IR decoders */ | |
384f23e8 MCC |
83 | static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin) |
84 | { | |
e40b1127 DH |
85 | return d1 > (d2 - margin); |
86 | } | |
87 | ||
384f23e8 MCC |
88 | static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin) |
89 | { | |
e40b1127 DH |
90 | return ((d1 > (d2 - margin)) && (d1 < (d2 + margin))); |
91 | } | |
92 | ||
384f23e8 MCC |
93 | static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y) |
94 | { | |
e40b1127 DH |
95 | return x->pulse != y->pulse; |
96 | } | |
97 | ||
384f23e8 MCC |
98 | static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration) |
99 | { | |
e40b1127 DH |
100 | if (duration > ev->duration) |
101 | ev->duration = 0; | |
102 | else | |
103 | ev->duration -= duration; | |
104 | } | |
105 | ||
510fcb70 | 106 | #define TO_US(duration) DIV_ROUND_CLOSEST((duration), 1000) |
e40b1127 DH |
107 | #define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space") |
108 | #define IS_RESET(ev) (ev.duration == 0) | |
3f113e36 MCC |
109 | /* |
110 | * Routines from ir-sysfs.c - Meant to be called only internally inside | |
111 | * ir-core | |
112 | */ | |
113 | ||
114 | int ir_register_class(struct input_dev *input_dev); | |
115 | void ir_unregister_class(struct input_dev *input_dev); | |
116 | ||
117 | /* | |
118 | * Routines from ir-raw-event.c to be used internally and by decoders | |
119 | */ | |
667c9ebe | 120 | u64 ir_raw_get_allowed_protocols(void); |
3f113e36 MCC |
121 | int ir_raw_event_register(struct input_dev *input_dev); |
122 | void ir_raw_event_unregister(struct input_dev *input_dev); | |
3f113e36 MCC |
123 | int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler); |
124 | void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler); | |
125 | void ir_raw_init(void); | |
126 | ||
127 | ||
128 | /* | |
129 | * Decoder initialization code | |
130 | * | |
131 | * Those load logic are called during ir-core init, and automatically | |
132 | * loads the compiled decoders for their usage with IR raw events | |
133 | */ | |
134 | ||
135 | /* from ir-nec-decoder.c */ | |
136 | #ifdef CONFIG_IR_NEC_DECODER_MODULE | |
137 | #define load_nec_decode() request_module("ir-nec-decoder") | |
138 | #else | |
139 | #define load_nec_decode() 0 | |
140 | #endif | |
141 | ||
142 | /* from ir-rc5-decoder.c */ | |
143 | #ifdef CONFIG_IR_RC5_DECODER_MODULE | |
144 | #define load_rc5_decode() request_module("ir-rc5-decoder") | |
145 | #else | |
146 | #define load_rc5_decode() 0 | |
147 | #endif | |
148 | ||
784a4931 | 149 | /* from ir-rc6-decoder.c */ |
f35473e6 | 150 | #ifdef CONFIG_IR_RC6_DECODER_MODULE |
784a4931 DH |
151 | #define load_rc6_decode() request_module("ir-rc6-decoder") |
152 | #else | |
153 | #define load_rc6_decode() 0 | |
154 | #endif | |
155 | ||
bf670f64 DH |
156 | /* from ir-jvc-decoder.c */ |
157 | #ifdef CONFIG_IR_JVC_DECODER_MODULE | |
158 | #define load_jvc_decode() request_module("ir-jvc-decoder") | |
159 | #else | |
160 | #define load_jvc_decode() 0 | |
161 | #endif | |
162 | ||
3fe29c89 DH |
163 | /* from ir-sony-decoder.c */ |
164 | #ifdef CONFIG_IR_SONY_DECODER_MODULE | |
165 | #define load_sony_decode() request_module("ir-sony-decoder") | |
166 | #else | |
167 | #define load_sony_decode() 0 | |
168 | #endif | |
169 | ||
ca414698 JW |
170 | /* from ir-lirc-codec.c */ |
171 | #ifdef CONFIG_IR_LIRC_CODEC_MODULE | |
172 | #define load_lirc_codec() request_module("ir-lirc-codec") | |
173 | #else | |
174 | #define load_lirc_codec() 0 | |
175 | #endif | |
176 | ||
177 | ||
3f113e36 | 178 | #endif /* _IR_RAW_EVENT */ |