1 /* 2 * Remote Controller core raw events header 3 * 4 * Copyright (C) 2010 by Mauro Carvalho Chehab 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 _RC_CORE_PRIV 17 #define _RC_CORE_PRIV 18 19 #include <linux/slab.h> 20 #include <linux/spinlock.h> 21 #include <media/rc-core.h> 22 23 struct ir_raw_handler { 24 struct list_head list; 25 26 u64 protocols; /* which are handled by this handler */ 27 int (*decode)(struct rc_dev *dev, struct ir_raw_event event); 28 29 /* These two should only be used by the lirc decoder */ 30 int (*raw_register)(struct rc_dev *dev); 31 int (*raw_unregister)(struct rc_dev *dev); 32 }; 33 34 struct ir_raw_event_ctrl { 35 struct list_head list; /* to keep track of raw clients */ 36 struct task_struct *thread; 37 spinlock_t lock; 38 struct kfifo_rec_ptr_1 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 rc_dev *dev; /* pointer to the parent rc_dev */ 42 43 /* raw decoder state follows */ 44 struct ir_raw_event prev_ev; 45 struct ir_raw_event this_ev; 46 struct nec_dec { 47 int state; 48 unsigned count; 49 u32 bits; 50 bool is_nec_x; 51 bool necx_repeat; 52 } nec; 53 struct rc5_dec { 54 int state; 55 u32 bits; 56 unsigned count; 57 bool is_rc5x; 58 } rc5; 59 struct rc6_dec { 60 int state; 61 u8 header; 62 u32 body; 63 bool toggle; 64 unsigned count; 65 unsigned wanted_bits; 66 } rc6; 67 struct sony_dec { 68 int state; 69 u32 bits; 70 unsigned count; 71 } sony; 72 struct jvc_dec { 73 int state; 74 u16 bits; 75 u16 old_bits; 76 unsigned count; 77 bool first; 78 bool toggle; 79 } jvc; 80 struct sanyo_dec { 81 int state; 82 unsigned count; 83 u64 bits; 84 } sanyo; 85 struct sharp_dec { 86 int state; 87 unsigned count; 88 u32 bits; 89 unsigned int pulse_len; 90 } sharp; 91 struct mce_kbd_dec { 92 struct input_dev *idev; 93 struct timer_list rx_timeout; 94 char name[64]; 95 char phys[64]; 96 int state; 97 u8 header; 98 u32 body; 99 unsigned count; 100 unsigned wanted_bits; 101 } mce_kbd; 102 struct lirc_codec { 103 struct rc_dev *dev; 104 struct lirc_driver *drv; 105 int carrier_low; 106 107 ktime_t gap_start; 108 u64 gap_duration; 109 bool gap; 110 bool send_timeout_reports; 111 112 } lirc; 113 struct xmp_dec { 114 int state; 115 unsigned count; 116 u32 durations[16]; 117 } xmp; 118 }; 119 120 /* macros for IR decoders */ 121 static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin) 122 { 123 return d1 > (d2 - margin); 124 } 125 126 static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin) 127 { 128 return ((d1 > (d2 - margin)) && (d1 < (d2 + margin))); 129 } 130 131 static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y) 132 { 133 return x->pulse != y->pulse; 134 } 135 136 static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration) 137 { 138 if (duration > ev->duration) 139 ev->duration = 0; 140 else 141 ev->duration -= duration; 142 } 143 144 /* Returns true if event is normal pulse/space event */ 145 static inline bool is_timing_event(struct ir_raw_event ev) 146 { 147 return !ev.carrier_report && !ev.reset; 148 } 149 150 #define TO_US(duration) DIV_ROUND_CLOSEST((duration), 1000) 151 #define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space") 152 153 /* 154 * Routines from rc-raw.c to be used internally and by decoders 155 */ 156 u64 ir_raw_get_allowed_protocols(void); 157 int ir_raw_event_register(struct rc_dev *dev); 158 void ir_raw_event_unregister(struct rc_dev *dev); 159 int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler); 160 void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler); 161 void ir_raw_init(void); 162 163 /* 164 * Decoder initialization code 165 * 166 * Those load logic are called during ir-core init, and automatically 167 * loads the compiled decoders for their usage with IR raw events 168 */ 169 170 /* from ir-nec-decoder.c */ 171 #ifdef CONFIG_IR_NEC_DECODER_MODULE 172 #define load_nec_decode() request_module_nowait("ir-nec-decoder") 173 #else 174 static inline void load_nec_decode(void) { } 175 #endif 176 177 /* from ir-rc5-decoder.c */ 178 #ifdef CONFIG_IR_RC5_DECODER_MODULE 179 #define load_rc5_decode() request_module_nowait("ir-rc5-decoder") 180 #else 181 static inline void load_rc5_decode(void) { } 182 #endif 183 184 /* from ir-rc6-decoder.c */ 185 #ifdef CONFIG_IR_RC6_DECODER_MODULE 186 #define load_rc6_decode() request_module_nowait("ir-rc6-decoder") 187 #else 188 static inline void load_rc6_decode(void) { } 189 #endif 190 191 /* from ir-jvc-decoder.c */ 192 #ifdef CONFIG_IR_JVC_DECODER_MODULE 193 #define load_jvc_decode() request_module_nowait("ir-jvc-decoder") 194 #else 195 static inline void load_jvc_decode(void) { } 196 #endif 197 198 /* from ir-sony-decoder.c */ 199 #ifdef CONFIG_IR_SONY_DECODER_MODULE 200 #define load_sony_decode() request_module_nowait("ir-sony-decoder") 201 #else 202 static inline void load_sony_decode(void) { } 203 #endif 204 205 /* from ir-sanyo-decoder.c */ 206 #ifdef CONFIG_IR_SANYO_DECODER_MODULE 207 #define load_sanyo_decode() request_module_nowait("ir-sanyo-decoder") 208 #else 209 static inline void load_sanyo_decode(void) { } 210 #endif 211 212 /* from ir-sharp-decoder.c */ 213 #ifdef CONFIG_IR_SHARP_DECODER_MODULE 214 #define load_sharp_decode() request_module_nowait("ir-sharp-decoder") 215 #else 216 static inline void load_sharp_decode(void) { } 217 #endif 218 219 /* from ir-mce_kbd-decoder.c */ 220 #ifdef CONFIG_IR_MCE_KBD_DECODER_MODULE 221 #define load_mce_kbd_decode() request_module_nowait("ir-mce_kbd-decoder") 222 #else 223 static inline void load_mce_kbd_decode(void) { } 224 #endif 225 226 /* from ir-lirc-codec.c */ 227 #ifdef CONFIG_IR_LIRC_CODEC_MODULE 228 #define load_lirc_codec() request_module_nowait("ir-lirc-codec") 229 #else 230 static inline void load_lirc_codec(void) { } 231 #endif 232 233 /* from ir-xmp-decoder.c */ 234 #ifdef CONFIG_IR_XMP_DECODER_MODULE 235 #define load_xmp_decode() request_module_nowait("ir-xmp-decoder") 236 #else 237 static inline void load_xmp_decode(void) { } 238 #endif 239 240 241 #endif /* _RC_CORE_PRIV */ 242