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 _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 23struct 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 34struct 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 unsigned wanted_bits; 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 rc5_sz_dec { 81 int state; 82 u32 bits; 83 unsigned count; 84 unsigned wanted_bits; 85 } rc5_sz; 86 struct sanyo_dec { 87 int state; 88 unsigned count; 89 u64 bits; 90 } sanyo; 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}; 114 115/* macros for IR decoders */ 116static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin) 117{ 118 return d1 > (d2 - margin); 119} 120 121static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin) 122{ 123 return ((d1 > (d2 - margin)) && (d1 < (d2 + margin))); 124} 125 126static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y) 127{ 128 return x->pulse != y->pulse; 129} 130 131static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration) 132{ 133 if (duration > ev->duration) 134 ev->duration = 0; 135 else 136 ev->duration -= duration; 137} 138 139/* Returns true if event is normal pulse/space event */ 140static inline bool is_timing_event(struct ir_raw_event ev) 141{ 142 return !ev.carrier_report && !ev.reset; 143} 144 145#define TO_US(duration) DIV_ROUND_CLOSEST((duration), 1000) 146#define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space") 147 148/* 149 * Routines from rc-raw.c to be used internally and by decoders 150 */ 151u64 ir_raw_get_allowed_protocols(void); 152int ir_raw_event_register(struct rc_dev *dev); 153void ir_raw_event_unregister(struct rc_dev *dev); 154int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler); 155void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler); 156void ir_raw_init(void); 157 158/* 159 * Decoder initialization code 160 * 161 * Those load logic are called during ir-core init, and automatically 162 * loads the compiled decoders for their usage with IR raw events 163 */ 164 165/* from ir-nec-decoder.c */ 166#ifdef CONFIG_IR_NEC_DECODER_MODULE 167#define load_nec_decode() request_module_nowait("ir-nec-decoder") 168#else 169static inline void load_nec_decode(void) { } 170#endif 171 172/* from ir-rc5-decoder.c */ 173#ifdef CONFIG_IR_RC5_DECODER_MODULE 174#define load_rc5_decode() request_module_nowait("ir-rc5-decoder") 175#else 176static inline void load_rc5_decode(void) { } 177#endif 178 179/* from ir-rc6-decoder.c */ 180#ifdef CONFIG_IR_RC6_DECODER_MODULE 181#define load_rc6_decode() request_module_nowait("ir-rc6-decoder") 182#else 183static inline void load_rc6_decode(void) { } 184#endif 185 186/* from ir-jvc-decoder.c */ 187#ifdef CONFIG_IR_JVC_DECODER_MODULE 188#define load_jvc_decode() request_module_nowait("ir-jvc-decoder") 189#else 190static inline void load_jvc_decode(void) { } 191#endif 192 193/* from ir-sony-decoder.c */ 194#ifdef CONFIG_IR_SONY_DECODER_MODULE 195#define load_sony_decode() request_module_nowait("ir-sony-decoder") 196#else 197static inline void load_sony_decode(void) { } 198#endif 199 200/* from ir-sanyo-decoder.c */ 201#ifdef CONFIG_IR_SANYO_DECODER_MODULE 202#define load_sanyo_decode() request_module_nowait("ir-sanyo-decoder") 203#else 204static inline void load_sanyo_decode(void) { } 205#endif 206 207/* from ir-mce_kbd-decoder.c */ 208#ifdef CONFIG_IR_MCE_KBD_DECODER_MODULE 209#define load_mce_kbd_decode() request_module_nowait("ir-mce_kbd-decoder") 210#else 211static inline void load_mce_kbd_decode(void) { } 212#endif 213 214/* from ir-lirc-codec.c */ 215#ifdef CONFIG_IR_LIRC_CODEC_MODULE 216#define load_lirc_codec() request_module_nowait("ir-lirc-codec") 217#else 218static inline void load_lirc_codec(void) { } 219#endif 220 221 222#endif /* _RC_CORE_PRIV */ 223