Mauro Carvalho Chehab | 3f113e3 | 2010-04-08 15:10:27 -0300 | [diff] [blame] | 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 | |
| 25 | int (*decode)(struct input_dev *input_dev, s64 duration); |
| 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 */ |
| 39 | #define PULSE(units) ((units)) |
| 40 | #define SPACE(units) (-(units)) |
| 41 | #define IS_RESET(duration) ((duration) == 0) |
| 42 | #define IS_PULSE(duration) ((duration) > 0) |
| 43 | #define IS_SPACE(duration) ((duration) < 0) |
| 44 | #define DURATION(duration) (abs((duration))) |
| 45 | #define IS_TRANSITION(x, y) ((x) * (y) < 0) |
| 46 | #define DECREASE_DURATION(duration, amount) \ |
| 47 | do { \ |
| 48 | if (IS_SPACE(duration)) \ |
| 49 | duration += (amount); \ |
| 50 | else if (IS_PULSE(duration)) \ |
| 51 | duration -= (amount); \ |
| 52 | } while (0) |
| 53 | |
| 54 | #define TO_UNITS(duration, unit_len) \ |
| 55 | ((int)((duration) > 0 ? \ |
| 56 | DIV_ROUND_CLOSEST(abs((duration)), (unit_len)) :\ |
| 57 | -DIV_ROUND_CLOSEST(abs((duration)), (unit_len)))) |
| 58 | #define TO_US(duration) ((int)TO_UNITS(duration, 1000)) |
| 59 | |
| 60 | /* |
| 61 | * Routines from ir-keytable.c to be used internally on ir-core and decoders |
| 62 | */ |
| 63 | |
| 64 | u32 ir_g_keycode_from_table(struct input_dev *input_dev, |
| 65 | u32 scancode); |
| 66 | |
| 67 | /* |
| 68 | * Routines from ir-sysfs.c - Meant to be called only internally inside |
| 69 | * ir-core |
| 70 | */ |
| 71 | |
| 72 | int ir_register_class(struct input_dev *input_dev); |
| 73 | void ir_unregister_class(struct input_dev *input_dev); |
| 74 | |
| 75 | /* |
| 76 | * Routines from ir-raw-event.c to be used internally and by decoders |
| 77 | */ |
| 78 | int ir_raw_event_register(struct input_dev *input_dev); |
| 79 | void ir_raw_event_unregister(struct input_dev *input_dev); |
| 80 | static inline void ir_raw_event_reset(struct input_dev *input_dev) |
| 81 | { |
| 82 | ir_raw_event_store(input_dev, 0); |
| 83 | ir_raw_event_handle(input_dev); |
| 84 | } |
| 85 | int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler); |
| 86 | void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler); |
| 87 | void ir_raw_init(void); |
| 88 | |
| 89 | |
| 90 | /* |
| 91 | * Decoder initialization code |
| 92 | * |
| 93 | * Those load logic are called during ir-core init, and automatically |
| 94 | * loads the compiled decoders for their usage with IR raw events |
| 95 | */ |
| 96 | |
| 97 | /* from ir-nec-decoder.c */ |
| 98 | #ifdef CONFIG_IR_NEC_DECODER_MODULE |
| 99 | #define load_nec_decode() request_module("ir-nec-decoder") |
| 100 | #else |
| 101 | #define load_nec_decode() 0 |
| 102 | #endif |
| 103 | |
| 104 | /* from ir-rc5-decoder.c */ |
| 105 | #ifdef CONFIG_IR_RC5_DECODER_MODULE |
| 106 | #define load_rc5_decode() request_module("ir-rc5-decoder") |
| 107 | #else |
| 108 | #define load_rc5_decode() 0 |
| 109 | #endif |
| 110 | |
David Härdeman | 784a493 | 2010-04-08 20:04:40 -0300 | [diff] [blame^] | 111 | /* from ir-rc6-decoder.c */ |
| 112 | #ifdef CONFIG_IR_RC5_DECODER_MODULE |
| 113 | #define load_rc6_decode() request_module("ir-rc6-decoder") |
| 114 | #else |
| 115 | #define load_rc6_decode() 0 |
| 116 | #endif |
| 117 | |
Mauro Carvalho Chehab | 3f113e3 | 2010-04-08 15:10:27 -0300 | [diff] [blame] | 118 | #endif /* _IR_RAW_EVENT */ |