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8#ifndef _RC_CORE_PRIV
9#define _RC_CORE_PRIV
10
11#define RC_DEV_MAX 256
12
13#define MAX_IR_EVENT_SIZE 512
14
15#include <linux/slab.h>
16#include <uapi/linux/bpf.h>
17#include <media/rc-core.h>
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24int rc_open(struct rc_dev *rdev);
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31void rc_close(struct rc_dev *rdev);
32
33struct ir_raw_handler {
34 struct list_head list;
35
36 u64 protocols;
37 int (*decode)(struct rc_dev *dev, struct ir_raw_event event);
38 int (*encode)(enum rc_proto protocol, u32 scancode,
39 struct ir_raw_event *events, unsigned int max);
40 u32 carrier;
41 u32 min_timeout;
42
43
44 int (*raw_register)(struct rc_dev *dev);
45 int (*raw_unregister)(struct rc_dev *dev);
46};
47
48struct ir_raw_event_ctrl {
49 struct list_head list;
50 struct task_struct *thread;
51
52 DECLARE_KFIFO(kfifo, struct ir_raw_event, MAX_IR_EVENT_SIZE);
53 ktime_t last_event;
54 struct rc_dev *dev;
55
56 spinlock_t edge_spinlock;
57 struct timer_list edge_handle;
58
59
60 struct ir_raw_event prev_ev;
61 struct ir_raw_event this_ev;
62
63#ifdef CONFIG_BPF_LIRC_MODE2
64 u32 bpf_sample;
65 struct bpf_prog_array __rcu *progs;
66#endif
67#if IS_ENABLED(CONFIG_IR_NEC_DECODER)
68 struct nec_dec {
69 int state;
70 unsigned count;
71 u32 bits;
72 bool is_nec_x;
73 bool necx_repeat;
74 } nec;
75#endif
76#if IS_ENABLED(CONFIG_IR_RC5_DECODER)
77 struct rc5_dec {
78 int state;
79 u32 bits;
80 unsigned count;
81 bool is_rc5x;
82 } rc5;
83#endif
84#if IS_ENABLED(CONFIG_IR_RC6_DECODER)
85 struct rc6_dec {
86 int state;
87 u8 header;
88 u32 body;
89 bool toggle;
90 unsigned count;
91 unsigned wanted_bits;
92 } rc6;
93#endif
94#if IS_ENABLED(CONFIG_IR_SONY_DECODER)
95 struct sony_dec {
96 int state;
97 u32 bits;
98 unsigned count;
99 } sony;
100#endif
101#if IS_ENABLED(CONFIG_IR_JVC_DECODER)
102 struct jvc_dec {
103 int state;
104 u16 bits;
105 u16 old_bits;
106 unsigned count;
107 bool first;
108 bool toggle;
109 } jvc;
110#endif
111#if IS_ENABLED(CONFIG_IR_SANYO_DECODER)
112 struct sanyo_dec {
113 int state;
114 unsigned count;
115 u64 bits;
116 } sanyo;
117#endif
118#if IS_ENABLED(CONFIG_IR_SHARP_DECODER)
119 struct sharp_dec {
120 int state;
121 unsigned count;
122 u32 bits;
123 unsigned int pulse_len;
124 } sharp;
125#endif
126#if IS_ENABLED(CONFIG_IR_MCE_KBD_DECODER)
127 struct mce_kbd_dec {
128
129 spinlock_t keylock;
130 struct timer_list rx_timeout;
131 int state;
132 u8 header;
133 u32 body;
134 unsigned count;
135 unsigned wanted_bits;
136 } mce_kbd;
137#endif
138#if IS_ENABLED(CONFIG_IR_XMP_DECODER)
139 struct xmp_dec {
140 int state;
141 unsigned count;
142 u32 durations[16];
143 } xmp;
144#endif
145#if IS_ENABLED(CONFIG_IR_IMON_DECODER)
146 struct imon_dec {
147 int state;
148 int count;
149 int last_chk;
150 unsigned int bits;
151 bool stick_keyboard;
152 } imon;
153#endif
154#if IS_ENABLED(CONFIG_IR_RCMM_DECODER)
155 struct rcmm_dec {
156 int state;
157 unsigned int count;
158 u32 bits;
159 } rcmm;
160#endif
161};
162
163
164extern struct mutex ir_raw_handler_lock;
165
166
167static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin)
168{
169 return d1 > (d2 - margin);
170}
171
172static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin)
173{
174 return ((d1 > (d2 - margin)) && (d1 < (d2 + margin)));
175}
176
177static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y)
178{
179 return x->pulse != y->pulse;
180}
181
182static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration)
183{
184 if (duration > ev->duration)
185 ev->duration = 0;
186 else
187 ev->duration -= duration;
188}
189
190
191static inline bool is_timing_event(struct ir_raw_event ev)
192{
193 return !ev.carrier_report && !ev.reset;
194}
195
196#define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space")
197
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199bool rc_validate_scancode(enum rc_proto proto, u32 scancode);
200
201static inline void init_ir_raw_event_duration(struct ir_raw_event *ev,
202 unsigned int pulse,
203 u32 duration)
204{
205 *ev = (struct ir_raw_event) {
206 .duration = duration,
207 .pulse = pulse
208 };
209}
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221struct ir_raw_timings_manchester {
222 unsigned int leader_pulse;
223 unsigned int leader_space;
224 unsigned int clock;
225 unsigned int invert:1;
226 unsigned int trailer_space;
227};
228
229int ir_raw_gen_manchester(struct ir_raw_event **ev, unsigned int max,
230 const struct ir_raw_timings_manchester *timings,
231 unsigned int n, u64 data);
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246static inline int ir_raw_gen_pulse_space(struct ir_raw_event **ev,
247 unsigned int *max,
248 unsigned int pulse_width,
249 unsigned int space_width)
250{
251 if (!*max)
252 return -ENOBUFS;
253 init_ir_raw_event_duration((*ev)++, 1, pulse_width);
254 if (!--*max)
255 return -ENOBUFS;
256 init_ir_raw_event_duration((*ev)++, 0, space_width);
257 --*max;
258 return 0;
259}
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271struct ir_raw_timings_pd {
272 unsigned int header_pulse;
273 unsigned int header_space;
274 unsigned int bit_pulse;
275 unsigned int bit_space[2];
276 unsigned int trailer_pulse;
277 unsigned int trailer_space;
278 unsigned int msb_first:1;
279};
280
281int ir_raw_gen_pd(struct ir_raw_event **ev, unsigned int max,
282 const struct ir_raw_timings_pd *timings,
283 unsigned int n, u64 data);
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293struct ir_raw_timings_pl {
294 unsigned int header_pulse;
295 unsigned int bit_space;
296 unsigned int bit_pulse[2];
297 unsigned int trailer_space;
298 unsigned int msb_first:1;
299};
300
301int ir_raw_gen_pl(struct ir_raw_event **ev, unsigned int max,
302 const struct ir_raw_timings_pl *timings,
303 unsigned int n, u64 data);
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308u64 ir_raw_get_allowed_protocols(void);
309int ir_raw_event_prepare(struct rc_dev *dev);
310int ir_raw_event_register(struct rc_dev *dev);
311void ir_raw_event_free(struct rc_dev *dev);
312void ir_raw_event_unregister(struct rc_dev *dev);
313int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler);
314void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler);
315void ir_raw_load_modules(u64 *protocols);
316void ir_raw_init(void);
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320
321#ifdef CONFIG_LIRC
322int lirc_dev_init(void);
323void lirc_dev_exit(void);
324void lirc_raw_event(struct rc_dev *dev, struct ir_raw_event ev);
325void lirc_scancode_event(struct rc_dev *dev, struct lirc_scancode *lsc);
326int lirc_register(struct rc_dev *dev);
327void lirc_unregister(struct rc_dev *dev);
328struct rc_dev *rc_dev_get_from_fd(int fd);
329#else
330static inline int lirc_dev_init(void) { return 0; }
331static inline void lirc_dev_exit(void) {}
332static inline void lirc_raw_event(struct rc_dev *dev,
333 struct ir_raw_event ev) { }
334static inline void lirc_scancode_event(struct rc_dev *dev,
335 struct lirc_scancode *lsc) { }
336static inline int lirc_register(struct rc_dev *dev) { return 0; }
337static inline void lirc_unregister(struct rc_dev *dev) { }
338#endif
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342
343#ifdef CONFIG_BPF_LIRC_MODE2
344void lirc_bpf_free(struct rc_dev *dev);
345void lirc_bpf_run(struct rc_dev *dev, u32 sample);
346#else
347static inline void lirc_bpf_free(struct rc_dev *dev) { }
348static inline void lirc_bpf_run(struct rc_dev *dev, u32 sample) { }
349#endif
350
351#endif
352