/* ir-raw-event.c - handle IR Pulse/Space event * * Copyright (C) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <media/ir-core.h> #include <linux/spinlock.h> #include <linux/delay.h> /* Used to handle IR raw handler extensions */ static LIST_HEAD(rc_map_list); static DEFINE_SPINLOCK(rc_map_lock); static struct rc_keymap *seek_rc_map(const char *name) { struct rc_keymap *map = NULL; spin_lock(&rc_map_lock); list_for_each_entry(map, &rc_map_list, list) { if (!strcmp(name, map->map.name)) { spin_unlock(&rc_map_lock); return map; } } spin_unlock(&rc_map_lock); return NULL; } struct ir_scancode_table *get_rc_map(const char *name) { struct rc_keymap *map; map = seek_rc_map(name); #ifdef MODULE if (!map) { int rc = request_module(name); if (rc < 0) { printk(KERN_ERR "Couldn't load IR keymap %s\n", name); return NULL; } msleep(20); /* Give some time for IR to register */ map = seek_rc_map(name); } #endif if (!map) { printk(KERN_ERR "IR keymap %s not found\n", name); return NULL; } printk(KERN_INFO "Registered IR keymap %s\n", map->map.name); return &map->map; } EXPORT_SYMBOL_GPL(get_rc_map); int ir_register_map(struct rc_keymap *map) { spin_lock(&rc_map_lock); list_add_tail(&map->list, &rc_map_list); spin_unlock(&rc_map_lock); return 0; } EXPORT_SYMBOL_GPL(ir_register_map); void ir_unregister_map(struct rc_keymap *map) { spin_lock(&rc_map_lock); list_del(&map->list); spin_unlock(&rc_map_lock); } EXPORT_SYMBOL_GPL(ir_unregister_map); static struct ir_scancode empty[] = { { 0x2a, KEY_COFFEE }, }; static struct rc_keymap empty_map = { .map = { .scan = empty, .size = ARRAY_SIZE(empty), .ir_type = IR_TYPE_UNKNOWN, /* Legacy IR type */ .name = RC_MAP_EMPTY, } }; int ir_rcmap_init(void) { return ir_register_map(&empty_map); } void ir_rcmap_cleanup(void) { ir_unregister_map(&empty_map); }