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Commit | Line | Data |
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3f113e36 MCC |
1 | /* |
2 | * Remote Controller core raw events header | |
3 | * | |
37e59f87 | 4 | * Copyright (C) 2010 by Mauro Carvalho Chehab |
3f113e36 MCC |
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 | ||
829ba9fe DH |
16 | #ifndef _RC_CORE_PRIV |
17 | #define _RC_CORE_PRIV | |
3f113e36 | 18 | |
464254e5 HK |
19 | /* Define the max number of pulse/space transitions to buffer */ |
20 | #define MAX_IR_EVENT_SIZE 512 | |
21 | ||
3f113e36 | 22 | #include <linux/slab.h> |
6bda9644 | 23 | #include <media/rc-core.h> |
3f113e36 MCC |
24 | |
25 | struct ir_raw_handler { | |
26 | struct list_head list; | |
27 | ||
667c9ebe | 28 | u64 protocols; /* which are handled by this handler */ |
d8b4b582 | 29 | int (*decode)(struct rc_dev *dev, struct ir_raw_event event); |
3875233d JH |
30 | int (*encode)(enum rc_type protocol, u32 scancode, |
31 | struct ir_raw_event *events, unsigned int max); | |
c216369e DH |
32 | |
33 | /* These two should only be used by the lirc decoder */ | |
d8b4b582 DH |
34 | int (*raw_register)(struct rc_dev *dev); |
35 | int (*raw_unregister)(struct rc_dev *dev); | |
3f113e36 MCC |
36 | }; |
37 | ||
38 | struct ir_raw_event_ctrl { | |
c216369e | 39 | struct list_head list; /* to keep track of raw clients */ |
0d2cb1de | 40 | struct task_struct *thread; |
464254e5 HK |
41 | /* fifo for the pulse/space durations */ |
42 | DECLARE_KFIFO(kfifo, struct ir_raw_event, MAX_IR_EVENT_SIZE); | |
3f113e36 MCC |
43 | ktime_t last_event; /* when last event occurred */ |
44 | enum raw_event_type last_type; /* last event type */ | |
d8b4b582 | 45 | struct rc_dev *dev; /* pointer to the parent rc_dev */ |
c216369e DH |
46 | |
47 | /* raw decoder state follows */ | |
48 | struct ir_raw_event prev_ev; | |
4a702ebf | 49 | struct ir_raw_event this_ev; |
c216369e DH |
50 | struct nec_dec { |
51 | int state; | |
52 | unsigned count; | |
53 | u32 bits; | |
86ff071c ML |
54 | bool is_nec_x; |
55 | bool necx_repeat; | |
c216369e DH |
56 | } nec; |
57 | struct rc5_dec { | |
58 | int state; | |
59 | u32 bits; | |
60 | unsigned count; | |
e87b540b | 61 | bool is_rc5x; |
c216369e DH |
62 | } rc5; |
63 | struct rc6_dec { | |
64 | int state; | |
65 | u8 header; | |
66 | u32 body; | |
67 | bool toggle; | |
68 | unsigned count; | |
69 | unsigned wanted_bits; | |
70 | } rc6; | |
71 | struct sony_dec { | |
72 | int state; | |
73 | u32 bits; | |
74 | unsigned count; | |
75 | } sony; | |
76 | struct jvc_dec { | |
77 | int state; | |
78 | u16 bits; | |
79 | u16 old_bits; | |
80 | unsigned count; | |
81 | bool first; | |
82 | bool toggle; | |
83 | } jvc; | |
b32e7243 MCC |
84 | struct sanyo_dec { |
85 | int state; | |
86 | unsigned count; | |
87 | u64 bits; | |
88 | } sanyo; | |
1d184b0b JH |
89 | struct sharp_dec { |
90 | int state; | |
91 | unsigned count; | |
92 | u32 bits; | |
93 | unsigned int pulse_len; | |
94 | } sharp; | |
f5f2cc64 JW |
95 | struct mce_kbd_dec { |
96 | struct input_dev *idev; | |
97 | struct timer_list rx_timeout; | |
98 | char name[64]; | |
99 | char phys[64]; | |
100 | int state; | |
101 | u8 header; | |
102 | u32 body; | |
103 | unsigned count; | |
104 | unsigned wanted_bits; | |
105 | } mce_kbd; | |
ca414698 | 106 | struct lirc_codec { |
d8b4b582 | 107 | struct rc_dev *dev; |
ca414698 | 108 | struct lirc_driver *drv; |
e589333f | 109 | int carrier_low; |
4651918a ML |
110 | |
111 | ktime_t gap_start; | |
112 | u64 gap_duration; | |
113 | bool gap; | |
114 | bool send_timeout_reports; | |
115 | ||
ca414698 | 116 | } lirc; |
1dee9b59 MM |
117 | struct xmp_dec { |
118 | int state; | |
119 | unsigned count; | |
120 | u32 durations[16]; | |
121 | } xmp; | |
3f113e36 MCC |
122 | }; |
123 | ||
124 | /* macros for IR decoders */ | |
384f23e8 MCC |
125 | static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin) |
126 | { | |
e40b1127 DH |
127 | return d1 > (d2 - margin); |
128 | } | |
129 | ||
384f23e8 MCC |
130 | static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin) |
131 | { | |
e40b1127 DH |
132 | return ((d1 > (d2 - margin)) && (d1 < (d2 + margin))); |
133 | } | |
134 | ||
384f23e8 MCC |
135 | static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y) |
136 | { | |
e40b1127 DH |
137 | return x->pulse != y->pulse; |
138 | } | |
139 | ||
384f23e8 MCC |
140 | static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration) |
141 | { | |
e40b1127 DH |
142 | if (duration > ev->duration) |
143 | ev->duration = 0; | |
144 | else | |
145 | ev->duration -= duration; | |
146 | } | |
147 | ||
4651918a ML |
148 | /* Returns true if event is normal pulse/space event */ |
149 | static inline bool is_timing_event(struct ir_raw_event ev) | |
150 | { | |
151 | return !ev.carrier_report && !ev.reset; | |
152 | } | |
153 | ||
510fcb70 | 154 | #define TO_US(duration) DIV_ROUND_CLOSEST((duration), 1000) |
e40b1127 | 155 | #define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space") |
3f113e36 | 156 | |
844a4f45 AS |
157 | /* functions for IR encoders */ |
158 | ||
159 | static inline void init_ir_raw_event_duration(struct ir_raw_event *ev, | |
160 | unsigned int pulse, | |
161 | u32 duration) | |
162 | { | |
163 | init_ir_raw_event(ev); | |
164 | ev->duration = duration; | |
165 | ev->pulse = pulse; | |
166 | } | |
167 | ||
168 | /** | |
169 | * struct ir_raw_timings_manchester - Manchester coding timings | |
170 | * @leader: duration of leader pulse (if any) 0 if continuing | |
171 | * existing signal (see @pulse_space_start) | |
172 | * @pulse_space_start: 1 for starting with pulse (0 for starting with space) | |
173 | * @clock: duration of each pulse/space in ns | |
174 | * @invert: if set clock logic is inverted | |
175 | * (0 = space + pulse, 1 = pulse + space) | |
176 | * @trailer_space: duration of trailer space in ns | |
177 | */ | |
178 | struct ir_raw_timings_manchester { | |
179 | unsigned int leader; | |
180 | unsigned int pulse_space_start:1; | |
181 | unsigned int clock; | |
182 | unsigned int invert:1; | |
183 | unsigned int trailer_space; | |
184 | }; | |
185 | ||
186 | int ir_raw_gen_manchester(struct ir_raw_event **ev, unsigned int max, | |
187 | const struct ir_raw_timings_manchester *timings, | |
b73bc16d | 188 | unsigned int n, u64 data); |
844a4f45 | 189 | |
caec0984 JH |
190 | /** |
191 | * ir_raw_gen_pulse_space() - generate pulse and space raw events. | |
192 | * @ev: Pointer to pointer to next free raw event. | |
193 | * Will be incremented for each raw event written. | |
194 | * @max: Pointer to number of raw events available in buffer. | |
195 | * Will be decremented for each raw event written. | |
196 | * @pulse_width: Width of pulse in ns. | |
197 | * @space_width: Width of space in ns. | |
198 | * | |
199 | * Returns: 0 on success. | |
200 | * -ENOBUFS if there isn't enough buffer space to write both raw | |
201 | * events. In this case @max events will have been written. | |
202 | */ | |
203 | static inline int ir_raw_gen_pulse_space(struct ir_raw_event **ev, | |
204 | unsigned int *max, | |
205 | unsigned int pulse_width, | |
206 | unsigned int space_width) | |
207 | { | |
208 | if (!*max) | |
209 | return -ENOBUFS; | |
210 | init_ir_raw_event_duration((*ev)++, 1, pulse_width); | |
211 | if (!--*max) | |
212 | return -ENOBUFS; | |
213 | init_ir_raw_event_duration((*ev)++, 0, space_width); | |
214 | --*max; | |
215 | return 0; | |
216 | } | |
217 | ||
218 | /** | |
219 | * struct ir_raw_timings_pd - pulse-distance modulation timings | |
220 | * @header_pulse: duration of header pulse in ns (0 for none) | |
221 | * @header_space: duration of header space in ns | |
222 | * @bit_pulse: duration of bit pulse in ns | |
223 | * @bit_space: duration of bit space (for logic 0 and 1) in ns | |
224 | * @trailer_pulse: duration of trailer pulse in ns | |
225 | * @trailer_space: duration of trailer space in ns | |
226 | * @msb_first: 1 if most significant bit is sent first | |
227 | */ | |
228 | struct ir_raw_timings_pd { | |
229 | unsigned int header_pulse; | |
230 | unsigned int header_space; | |
231 | unsigned int bit_pulse; | |
232 | unsigned int bit_space[2]; | |
233 | unsigned int trailer_pulse; | |
234 | unsigned int trailer_space; | |
235 | unsigned int msb_first:1; | |
236 | }; | |
237 | ||
238 | int ir_raw_gen_pd(struct ir_raw_event **ev, unsigned int max, | |
239 | const struct ir_raw_timings_pd *timings, | |
240 | unsigned int n, u64 data); | |
241 | ||
103293be SY |
242 | /** |
243 | * struct ir_raw_timings_pl - pulse-length modulation timings | |
244 | * @header_pulse: duration of header pulse in ns (0 for none) | |
245 | * @bit_space: duration of bit space in ns | |
246 | * @bit_pulse: duration of bit pulse (for logic 0 and 1) in ns | |
247 | * @trailer_space: duration of trailer space in ns | |
248 | * @msb_first: 1 if most significant bit is sent first | |
249 | */ | |
250 | struct ir_raw_timings_pl { | |
251 | unsigned int header_pulse; | |
252 | unsigned int bit_space; | |
253 | unsigned int bit_pulse[2]; | |
254 | unsigned int trailer_space; | |
255 | unsigned int msb_first:1; | |
256 | }; | |
257 | ||
258 | int ir_raw_gen_pl(struct ir_raw_event **ev, unsigned int max, | |
259 | const struct ir_raw_timings_pl *timings, | |
260 | unsigned int n, u64 data); | |
261 | ||
3f113e36 | 262 | /* |
d8b4b582 | 263 | * Routines from rc-raw.c to be used internally and by decoders |
3f113e36 | 264 | */ |
667c9ebe | 265 | u64 ir_raw_get_allowed_protocols(void); |
f56928ab | 266 | int ir_raw_event_prepare(struct rc_dev *dev); |
d8b4b582 | 267 | int ir_raw_event_register(struct rc_dev *dev); |
f56928ab | 268 | void ir_raw_event_free(struct rc_dev *dev); |
d8b4b582 | 269 | void ir_raw_event_unregister(struct rc_dev *dev); |
3f113e36 MCC |
270 | int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler); |
271 | void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler); | |
272 | void ir_raw_init(void); | |
273 | ||
3f113e36 MCC |
274 | /* |
275 | * Decoder initialization code | |
276 | * | |
277 | * Those load logic are called during ir-core init, and automatically | |
278 | * loads the compiled decoders for their usage with IR raw events | |
279 | */ | |
280 | ||
829ba9fe | 281 | #endif /* _RC_CORE_PRIV */ |