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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 | ||
e40b1127 | 25 | int (*decode)(struct input_dev *input_dev, struct ir_raw_event event); |
3f113e36 MCC |
26 | int (*raw_register)(struct input_dev *input_dev); |
27 | int (*raw_unregister)(struct input_dev *input_dev); | |
28 | }; | |
29 | ||
30 | struct ir_raw_event_ctrl { | |
31 | struct work_struct rx_work; /* for the rx decoding workqueue */ | |
32 | struct kfifo kfifo; /* fifo for the pulse/space durations */ | |
33 | ktime_t last_event; /* when last event occurred */ | |
34 | enum raw_event_type last_type; /* last event type */ | |
35 | struct input_dev *input_dev; /* pointer to the parent input_dev */ | |
36 | }; | |
37 | ||
38 | /* macros for IR decoders */ | |
384f23e8 MCC |
39 | static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin) |
40 | { | |
e40b1127 DH |
41 | return d1 > (d2 - margin); |
42 | } | |
43 | ||
384f23e8 MCC |
44 | static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin) |
45 | { | |
e40b1127 DH |
46 | return ((d1 > (d2 - margin)) && (d1 < (d2 + margin))); |
47 | } | |
48 | ||
384f23e8 MCC |
49 | static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y) |
50 | { | |
e40b1127 DH |
51 | return x->pulse != y->pulse; |
52 | } | |
53 | ||
384f23e8 MCC |
54 | static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration) |
55 | { | |
e40b1127 DH |
56 | if (duration > ev->duration) |
57 | ev->duration = 0; | |
58 | else | |
59 | ev->duration -= duration; | |
60 | } | |
61 | ||
62 | #define TO_US(duration) (((duration) + 500) / 1000) | |
63 | #define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space") | |
64 | #define IS_RESET(ev) (ev.duration == 0) | |
3f113e36 | 65 | |
3f113e36 MCC |
66 | /* |
67 | * Routines from ir-sysfs.c - Meant to be called only internally inside | |
68 | * ir-core | |
69 | */ | |
70 | ||
71 | int ir_register_class(struct input_dev *input_dev); | |
72 | void ir_unregister_class(struct input_dev *input_dev); | |
73 | ||
74 | /* | |
75 | * Routines from ir-raw-event.c to be used internally and by decoders | |
76 | */ | |
77 | int ir_raw_event_register(struct input_dev *input_dev); | |
78 | void ir_raw_event_unregister(struct input_dev *input_dev); | |
3f113e36 MCC |
79 | int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler); |
80 | void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler); | |
81 | void ir_raw_init(void); | |
82 | ||
83 | ||
84 | /* | |
85 | * Decoder initialization code | |
86 | * | |
87 | * Those load logic are called during ir-core init, and automatically | |
88 | * loads the compiled decoders for their usage with IR raw events | |
89 | */ | |
90 | ||
91 | /* from ir-nec-decoder.c */ | |
92 | #ifdef CONFIG_IR_NEC_DECODER_MODULE | |
93 | #define load_nec_decode() request_module("ir-nec-decoder") | |
94 | #else | |
95 | #define load_nec_decode() 0 | |
96 | #endif | |
97 | ||
98 | /* from ir-rc5-decoder.c */ | |
99 | #ifdef CONFIG_IR_RC5_DECODER_MODULE | |
100 | #define load_rc5_decode() request_module("ir-rc5-decoder") | |
101 | #else | |
102 | #define load_rc5_decode() 0 | |
103 | #endif | |
104 | ||
784a4931 | 105 | /* from ir-rc6-decoder.c */ |
f35473e6 | 106 | #ifdef CONFIG_IR_RC6_DECODER_MODULE |
784a4931 DH |
107 | #define load_rc6_decode() request_module("ir-rc6-decoder") |
108 | #else | |
109 | #define load_rc6_decode() 0 | |
110 | #endif | |
111 | ||
bf670f64 DH |
112 | /* from ir-jvc-decoder.c */ |
113 | #ifdef CONFIG_IR_JVC_DECODER_MODULE | |
114 | #define load_jvc_decode() request_module("ir-jvc-decoder") | |
115 | #else | |
116 | #define load_jvc_decode() 0 | |
117 | #endif | |
118 | ||
3f113e36 | 119 | #endif /* _IR_RAW_EVENT */ |