David Härdeman | 829ba9f | 2010-11-19 20:43:27 -0300 | [diff] [blame] | 1 | /* ir-raw.c - handle IR pulse/space events |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 2 | * |
Mauro Carvalho Chehab | 37e59f8 | 2014-02-07 08:03:07 -0200 | [diff] [blame] | 3 | * Copyright (C) 2010 by Mauro Carvalho Chehab |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation version 2 of the License. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | */ |
| 14 | |
Paul Gortmaker | 35a2463 | 2011-08-01 15:26:38 -0400 | [diff] [blame] | 15 | #include <linux/export.h> |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 16 | #include <linux/kthread.h> |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 17 | #include <linux/mutex.h> |
Stephen Rothwell | dff65de | 2011-07-29 15:34:32 +1000 | [diff] [blame] | 18 | #include <linux/kmod.h> |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 19 | #include <linux/sched.h> |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 20 | #include <linux/freezer.h> |
Mauro Carvalho Chehab | f62de67 | 2010-11-09 23:09:57 -0300 | [diff] [blame] | 21 | #include "rc-core-priv.h" |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 22 | |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 23 | /* Define the max number of pulse/space transitions to buffer */ |
| 24 | #define MAX_IR_EVENT_SIZE 512 |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 25 | |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 26 | /* Used to keep track of IR raw clients, protected by ir_raw_handler_lock */ |
| 27 | static LIST_HEAD(ir_raw_client_list); |
| 28 | |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 29 | /* Used to handle IR raw handler extensions */ |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 30 | static DEFINE_MUTEX(ir_raw_handler_lock); |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 31 | static LIST_HEAD(ir_raw_handler_list); |
| 32 | static u64 available_protocols; |
Mauro Carvalho Chehab | 93c312f | 2010-03-25 21:13:43 -0300 | [diff] [blame] | 33 | |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 34 | static int ir_raw_event_thread(void *data) |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 35 | { |
David Härdeman | e40b112 | 2010-04-15 18:46:00 -0300 | [diff] [blame] | 36 | struct ir_raw_event ev; |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 37 | struct ir_raw_handler *handler; |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 38 | struct ir_raw_event_ctrl *raw = (struct ir_raw_event_ctrl *)data; |
Maxim Levitsky | c6ef1e7 | 2010-09-06 18:26:06 -0300 | [diff] [blame] | 39 | int retval; |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 40 | |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 41 | while (!kthread_should_stop()) { |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 42 | |
Maxim Levitsky | c6ef1e7 | 2010-09-06 18:26:06 -0300 | [diff] [blame] | 43 | spin_lock_irq(&raw->lock); |
Srinivas Kandagatla | 004ac38 | 2012-03-20 14:05:40 -0300 | [diff] [blame] | 44 | retval = kfifo_len(&raw->kfifo); |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 45 | |
Srinivas Kandagatla | 004ac38 | 2012-03-20 14:05:40 -0300 | [diff] [blame] | 46 | if (retval < sizeof(ev)) { |
Maxim Levitsky | c6ef1e7 | 2010-09-06 18:26:06 -0300 | [diff] [blame] | 47 | set_current_state(TASK_INTERRUPTIBLE); |
| 48 | |
| 49 | if (kthread_should_stop()) |
| 50 | set_current_state(TASK_RUNNING); |
| 51 | |
| 52 | spin_unlock_irq(&raw->lock); |
| 53 | schedule(); |
| 54 | continue; |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 55 | } |
| 56 | |
Srinivas Kandagatla | 004ac38 | 2012-03-20 14:05:40 -0300 | [diff] [blame] | 57 | retval = kfifo_out(&raw->kfifo, &ev, sizeof(ev)); |
Maxim Levitsky | c6ef1e7 | 2010-09-06 18:26:06 -0300 | [diff] [blame] | 58 | spin_unlock_irq(&raw->lock); |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 59 | |
Maxim Levitsky | c6ef1e7 | 2010-09-06 18:26:06 -0300 | [diff] [blame] | 60 | mutex_lock(&ir_raw_handler_lock); |
| 61 | list_for_each_entry(handler, &ir_raw_handler_list, list) |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 62 | handler->decode(raw->dev, ev); |
Maxim Levitsky | c6ef1e7 | 2010-09-06 18:26:06 -0300 | [diff] [blame] | 63 | raw->prev_ev = ev; |
| 64 | mutex_unlock(&ir_raw_handler_lock); |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 65 | } |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 66 | |
| 67 | return 0; |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 68 | } |
| 69 | |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 70 | /** |
| 71 | * ir_raw_event_store() - pass a pulse/space duration to the raw ir decoders |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 72 | * @dev: the struct rc_dev device descriptor |
David Härdeman | e40b112 | 2010-04-15 18:46:00 -0300 | [diff] [blame] | 73 | * @ev: the struct ir_raw_event descriptor of the pulse/space |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 74 | * |
| 75 | * This routine (which may be called from an interrupt context) stores a |
| 76 | * pulse/space duration for the raw ir decoding state machines. Pulses are |
| 77 | * signalled as positive values and spaces as negative values. A zero value |
| 78 | * will reset the decoding state machines. |
| 79 | */ |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 80 | int ir_raw_event_store(struct rc_dev *dev, struct ir_raw_event *ev) |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 81 | { |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 82 | if (!dev->raw) |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 83 | return -EINVAL; |
| 84 | |
Mauro Carvalho Chehab | 74c4792 | 2010-10-20 11:56:50 -0300 | [diff] [blame] | 85 | IR_dprintk(2, "sample: (%05dus %s)\n", |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 86 | TO_US(ev->duration), TO_STR(ev->pulse)); |
Maxim Levitsky | 510fcb7 | 2010-07-31 11:59:15 -0300 | [diff] [blame] | 87 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 88 | if (kfifo_in(&dev->raw->kfifo, ev, sizeof(*ev)) != sizeof(*ev)) |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 89 | return -ENOMEM; |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 90 | |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 91 | return 0; |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 92 | } |
| 93 | EXPORT_SYMBOL_GPL(ir_raw_event_store); |
| 94 | |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 95 | /** |
| 96 | * ir_raw_event_store_edge() - notify raw ir decoders of the start of a pulse/space |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 97 | * @dev: the struct rc_dev device descriptor |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 98 | * @type: the type of the event that has occurred |
| 99 | * |
| 100 | * This routine (which may be called from an interrupt context) is used to |
| 101 | * store the beginning of an ir pulse or space (or the start/end of ir |
| 102 | * reception) for the raw ir decoding state machines. This is used by |
| 103 | * hardware which does not provide durations directly but only interrupts |
| 104 | * (or similar events) on state change. |
| 105 | */ |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 106 | int ir_raw_event_store_edge(struct rc_dev *dev, enum raw_event_type type) |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 107 | { |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 108 | ktime_t now; |
| 109 | s64 delta; /* ns */ |
Mauro Carvalho Chehab | 8358783 | 2011-01-20 18:16:50 -0300 | [diff] [blame] | 110 | DEFINE_IR_RAW_EVENT(ev); |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 111 | int rc = 0; |
Jarod Wilson | 3f5c4c7 | 2011-06-16 16:18:37 -0300 | [diff] [blame] | 112 | int delay; |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 113 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 114 | if (!dev->raw) |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 115 | return -EINVAL; |
| 116 | |
| 117 | now = ktime_get(); |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 118 | delta = ktime_to_ns(ktime_sub(now, dev->raw->last_event)); |
Jarod Wilson | 3f5c4c7 | 2011-06-16 16:18:37 -0300 | [diff] [blame] | 119 | delay = MS_TO_NS(dev->input_dev->rep[REP_DELAY]); |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 120 | |
| 121 | /* Check for a long duration since last event or if we're |
| 122 | * being called for the first time, note that delta can't |
| 123 | * possibly be negative. |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 124 | */ |
Jarod Wilson | 3f5c4c7 | 2011-06-16 16:18:37 -0300 | [diff] [blame] | 125 | if (delta > delay || !dev->raw->last_type) |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 126 | type |= IR_START_EVENT; |
David Härdeman | e40b112 | 2010-04-15 18:46:00 -0300 | [diff] [blame] | 127 | else |
| 128 | ev.duration = delta; |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 129 | |
| 130 | if (type & IR_START_EVENT) |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 131 | ir_raw_event_reset(dev); |
| 132 | else if (dev->raw->last_type & IR_SPACE) { |
David Härdeman | e40b112 | 2010-04-15 18:46:00 -0300 | [diff] [blame] | 133 | ev.pulse = false; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 134 | rc = ir_raw_event_store(dev, &ev); |
| 135 | } else if (dev->raw->last_type & IR_PULSE) { |
David Härdeman | e40b112 | 2010-04-15 18:46:00 -0300 | [diff] [blame] | 136 | ev.pulse = true; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 137 | rc = ir_raw_event_store(dev, &ev); |
David Härdeman | e40b112 | 2010-04-15 18:46:00 -0300 | [diff] [blame] | 138 | } else |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 139 | return 0; |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 140 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 141 | dev->raw->last_event = now; |
| 142 | dev->raw->last_type = type; |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 143 | return rc; |
| 144 | } |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 145 | EXPORT_SYMBOL_GPL(ir_raw_event_store_edge); |
| 146 | |
| 147 | /** |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 148 | * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 149 | * @dev: the struct rc_dev device descriptor |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 150 | * @type: the type of the event that has occurred |
| 151 | * |
| 152 | * This routine (which may be called from an interrupt context) works |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 153 | * in similar manner to ir_raw_event_store_edge. |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 154 | * This routine is intended for devices with limited internal buffer |
Sean Young | b83bfd1 | 2012-08-13 08:59:47 -0300 | [diff] [blame] | 155 | * It automerges samples of same type, and handles timeouts. Returns non-zero |
| 156 | * if the event was added, and zero if the event was ignored due to idle |
| 157 | * processing. |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 158 | */ |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 159 | int ir_raw_event_store_with_filter(struct rc_dev *dev, struct ir_raw_event *ev) |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 160 | { |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 161 | if (!dev->raw) |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 162 | return -EINVAL; |
| 163 | |
| 164 | /* Ignore spaces in idle mode */ |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 165 | if (dev->idle && !ev->pulse) |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 166 | return 0; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 167 | else if (dev->idle) |
| 168 | ir_raw_event_set_idle(dev, false); |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 169 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 170 | if (!dev->raw->this_ev.duration) |
| 171 | dev->raw->this_ev = *ev; |
| 172 | else if (ev->pulse == dev->raw->this_ev.pulse) |
| 173 | dev->raw->this_ev.duration += ev->duration; |
| 174 | else { |
| 175 | ir_raw_event_store(dev, &dev->raw->this_ev); |
| 176 | dev->raw->this_ev = *ev; |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | /* Enter idle mode if nessesary */ |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 180 | if (!ev->pulse && dev->timeout && |
| 181 | dev->raw->this_ev.duration >= dev->timeout) |
| 182 | ir_raw_event_set_idle(dev, true); |
| 183 | |
Sean Young | b83bfd1 | 2012-08-13 08:59:47 -0300 | [diff] [blame] | 184 | return 1; |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 185 | } |
| 186 | EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter); |
| 187 | |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 188 | /** |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 189 | * ir_raw_event_set_idle() - provide hint to rc-core when the device is idle or not |
| 190 | * @dev: the struct rc_dev device descriptor |
| 191 | * @idle: whether the device is idle or not |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 192 | */ |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 193 | void ir_raw_event_set_idle(struct rc_dev *dev, bool idle) |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 194 | { |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 195 | if (!dev->raw) |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 196 | return; |
| 197 | |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 198 | IR_dprintk(2, "%s idle mode\n", idle ? "enter" : "leave"); |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 199 | |
| 200 | if (idle) { |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 201 | dev->raw->this_ev.timeout = true; |
| 202 | ir_raw_event_store(dev, &dev->raw->this_ev); |
| 203 | init_ir_raw_event(&dev->raw->this_ev); |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 204 | } |
Maxim Levitsky | 4651918 | 2010-10-16 19:56:28 -0300 | [diff] [blame] | 205 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 206 | if (dev->s_idle) |
| 207 | dev->s_idle(dev, idle); |
| 208 | |
| 209 | dev->idle = idle; |
Maxim Levitsky | 4a702eb | 2010-07-31 11:59:22 -0300 | [diff] [blame] | 210 | } |
| 211 | EXPORT_SYMBOL_GPL(ir_raw_event_set_idle); |
| 212 | |
| 213 | /** |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 214 | * ir_raw_event_handle() - schedules the decoding of stored ir data |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 215 | * @dev: the struct rc_dev device descriptor |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 216 | * |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 217 | * This routine will tell rc-core to start decoding stored ir data. |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 218 | */ |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 219 | void ir_raw_event_handle(struct rc_dev *dev) |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 220 | { |
Maxim Levitsky | c6ef1e7 | 2010-09-06 18:26:06 -0300 | [diff] [blame] | 221 | unsigned long flags; |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 222 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 223 | if (!dev->raw) |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 224 | return; |
| 225 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 226 | spin_lock_irqsave(&dev->raw->lock, flags); |
| 227 | wake_up_process(dev->raw->thread); |
| 228 | spin_unlock_irqrestore(&dev->raw->lock, flags); |
David Härdeman | 724e249 | 2010-04-08 13:10:00 -0300 | [diff] [blame] | 229 | } |
Mauro Carvalho Chehab | a3572c3 | 2010-03-20 20:59:44 -0300 | [diff] [blame] | 230 | EXPORT_SYMBOL_GPL(ir_raw_event_handle); |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 231 | |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 232 | /* used internally by the sysfs interface */ |
| 233 | u64 |
Randy Dunlap | 2dbd61b | 2011-01-09 00:53:53 -0300 | [diff] [blame] | 234 | ir_raw_get_allowed_protocols(void) |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 235 | { |
| 236 | u64 protocols; |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 237 | mutex_lock(&ir_raw_handler_lock); |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 238 | protocols = available_protocols; |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 239 | mutex_unlock(&ir_raw_handler_lock); |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 240 | return protocols; |
| 241 | } |
| 242 | |
David Härdeman | da6e162 | 2014-04-03 20:32:16 -0300 | [diff] [blame^] | 243 | static int change_protocol(struct rc_dev *dev, u64 *rc_type) |
| 244 | { |
| 245 | /* the caller will update dev->enabled_protocols */ |
| 246 | return 0; |
| 247 | } |
| 248 | |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 249 | /* |
| 250 | * Used to (un)register raw event clients |
| 251 | */ |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 252 | int ir_raw_event_register(struct rc_dev *dev) |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 253 | { |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 254 | int rc; |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 255 | struct ir_raw_handler *handler; |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 256 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 257 | if (!dev) |
| 258 | return -EINVAL; |
| 259 | |
| 260 | dev->raw = kzalloc(sizeof(*dev->raw), GFP_KERNEL); |
| 261 | if (!dev->raw) |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 262 | return -ENOMEM; |
| 263 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 264 | dev->raw->dev = dev; |
James Hogan | 1a1934f | 2014-02-28 20:17:03 -0300 | [diff] [blame] | 265 | rc_set_enabled_protocols(dev, ~0); |
David Härdeman | da6e162 | 2014-04-03 20:32:16 -0300 | [diff] [blame^] | 266 | dev->change_protocol = change_protocol; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 267 | rc = kfifo_alloc(&dev->raw->kfifo, |
| 268 | sizeof(struct ir_raw_event) * MAX_IR_EVENT_SIZE, |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 269 | GFP_KERNEL); |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 270 | if (rc < 0) |
| 271 | goto out; |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 272 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 273 | spin_lock_init(&dev->raw->lock); |
| 274 | dev->raw->thread = kthread_run(ir_raw_event_thread, dev->raw, |
| 275 | "rc%ld", dev->devno); |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 276 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 277 | if (IS_ERR(dev->raw->thread)) { |
| 278 | rc = PTR_ERR(dev->raw->thread); |
| 279 | goto out; |
Maxim Levitsky | 0d2cb1d | 2010-07-31 11:59:17 -0300 | [diff] [blame] | 280 | } |
| 281 | |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 282 | mutex_lock(&ir_raw_handler_lock); |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 283 | list_add_tail(&dev->raw->list, &ir_raw_client_list); |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 284 | list_for_each_entry(handler, &ir_raw_handler_list, list) |
| 285 | if (handler->raw_register) |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 286 | handler->raw_register(dev); |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 287 | mutex_unlock(&ir_raw_handler_lock); |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 288 | |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 289 | return 0; |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 290 | |
| 291 | out: |
| 292 | kfree(dev->raw); |
| 293 | dev->raw = NULL; |
| 294 | return rc; |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 295 | } |
| 296 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 297 | void ir_raw_event_unregister(struct rc_dev *dev) |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 298 | { |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 299 | struct ir_raw_handler *handler; |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 300 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 301 | if (!dev || !dev->raw) |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 302 | return; |
| 303 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 304 | kthread_stop(dev->raw->thread); |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 305 | |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 306 | mutex_lock(&ir_raw_handler_lock); |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 307 | list_del(&dev->raw->list); |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 308 | list_for_each_entry(handler, &ir_raw_handler_list, list) |
| 309 | if (handler->raw_unregister) |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 310 | handler->raw_unregister(dev); |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 311 | mutex_unlock(&ir_raw_handler_lock); |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 312 | |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 313 | kfifo_free(&dev->raw->kfifo); |
| 314 | kfree(dev->raw); |
| 315 | dev->raw = NULL; |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 316 | } |
| 317 | |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 318 | /* |
| 319 | * Extension interface - used to register the IR decoders |
| 320 | */ |
| 321 | |
| 322 | int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler) |
| 323 | { |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 324 | struct ir_raw_event_ctrl *raw; |
| 325 | |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 326 | mutex_lock(&ir_raw_handler_lock); |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 327 | list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list); |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 328 | if (ir_raw_handler->raw_register) |
| 329 | list_for_each_entry(raw, &ir_raw_client_list, list) |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 330 | ir_raw_handler->raw_register(raw->dev); |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 331 | available_protocols |= ir_raw_handler->protocols; |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 332 | mutex_unlock(&ir_raw_handler_lock); |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 333 | |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 334 | return 0; |
| 335 | } |
| 336 | EXPORT_SYMBOL(ir_raw_handler_register); |
| 337 | |
| 338 | void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler) |
| 339 | { |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 340 | struct ir_raw_event_ctrl *raw; |
| 341 | |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 342 | mutex_lock(&ir_raw_handler_lock); |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 343 | list_del(&ir_raw_handler->list); |
David Härdeman | c216369 | 2010-06-13 17:29:36 -0300 | [diff] [blame] | 344 | if (ir_raw_handler->raw_unregister) |
| 345 | list_for_each_entry(raw, &ir_raw_client_list, list) |
David Härdeman | d8b4b58 | 2010-10-29 16:08:23 -0300 | [diff] [blame] | 346 | ir_raw_handler->raw_unregister(raw->dev); |
David Härdeman | 667c9eb | 2010-06-13 17:29:31 -0300 | [diff] [blame] | 347 | available_protocols &= ~ir_raw_handler->protocols; |
Maxim Levitsky | 45a568f | 2010-07-31 11:59:16 -0300 | [diff] [blame] | 348 | mutex_unlock(&ir_raw_handler_lock); |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 349 | } |
| 350 | EXPORT_SYMBOL(ir_raw_handler_unregister); |
| 351 | |
Konstantin Khlebnikov | a4bb6f3 | 2012-12-14 07:02:48 -0300 | [diff] [blame] | 352 | void ir_raw_init(void) |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 353 | { |
| 354 | /* Load the decoder modules */ |
| 355 | |
| 356 | load_nec_decode(); |
Mauro Carvalho Chehab | db1423a | 2010-04-04 10:27:20 -0300 | [diff] [blame] | 357 | load_rc5_decode(); |
David Härdeman | 784a493 | 2010-04-08 20:04:40 -0300 | [diff] [blame] | 358 | load_rc6_decode(); |
David Härdeman | bf670f6 | 2010-04-15 18:46:05 -0300 | [diff] [blame] | 359 | load_jvc_decode(); |
David Härdeman | 3fe29c8 | 2010-04-15 18:46:10 -0300 | [diff] [blame] | 360 | load_sony_decode(); |
Mauro Carvalho Chehab | b32e724 | 2011-11-23 12:04:08 -0300 | [diff] [blame] | 361 | load_sanyo_decode(); |
James Hogan | 324a667 | 2014-02-05 19:15:16 -0300 | [diff] [blame] | 362 | load_sharp_decode(); |
Jarod Wilson | f5f2cc6 | 2011-07-13 18:09:48 -0300 | [diff] [blame] | 363 | load_mce_kbd_decode(); |
Jarod Wilson | ca41469 | 2010-07-03 01:07:53 -0300 | [diff] [blame] | 364 | load_lirc_codec(); |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 365 | |
| 366 | /* If needed, we may later add some init code. In this case, |
Mauro Carvalho Chehab | 6bda964 | 2010-11-17 13:28:38 -0300 | [diff] [blame] | 367 | it is needed to change the CONFIG_MODULE test at rc-core.h |
Mauro Carvalho Chehab | 995187b | 2010-03-24 20:47:53 -0300 | [diff] [blame] | 368 | */ |
| 369 | } |