git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 256154fb AD |
1 | /* |
| 2 | * linux/drivers/video/fb_notify.c | |
| 3 | * | |
| 4 | * Copyright (C) 2006 Antonino Daplas <adaplas@pol.net> | |
| 5 | * | |
| 6 | * 2001 - Documented with DocBook | |
| 7 | * - Brad Douglas <brad@neruo.com> | |
| 8 | * | |
| 9 | * This file is subject to the terms and conditions of the GNU General Public | |
| 10 | * License. See the file COPYING in the main directory of this archive | |
| 11 | * for more details. | |
| 12 | */ | |
| 13 | #include <linux/fb.h> | |
| 14 | #include <linux/notifier.h> | |
| 15 | ||
| 16 | static BLOCKING_NOTIFIER_HEAD(fb_notifier_list); | |
| 17 | ||
| 18 | /** | |
| 19 | * fb_register_client - register a client notifier | |
| 20 | * @nb: notifier block to callback on events | |
| 21 | */ | |
| 22 | int fb_register_client(struct notifier_block *nb) | |
| 23 | { | |
| 24 | return blocking_notifier_chain_register(&fb_notifier_list, nb); | |
| 25 | } | |
| 26 | EXPORT_SYMBOL(fb_register_client); | |
| 27 | ||
| 28 | /** | |
| 29 | * fb_unregister_client - unregister a client notifier | |
| 30 | * @nb: notifier block to callback on events | |
| 31 | */ | |
| 32 | int fb_unregister_client(struct notifier_block *nb) | |
| 33 | { | |
| 34 | return blocking_notifier_chain_unregister(&fb_notifier_list, nb); | |
| 35 | } | |
| 36 | EXPORT_SYMBOL(fb_unregister_client); | |
| 37 | ||
| 38 | /** | |
| 39 | * fb_notifier_call_chain - notify clients of fb_events | |
| 40 | * | |
| 41 | */ | |
| 42 | int fb_notifier_call_chain(unsigned long val, void *v) | |
| 43 | { | |
| 44 | return blocking_notifier_call_chain(&fb_notifier_list, val, v); | |
| 45 | } | |
| 46 | EXPORT_SYMBOL_GPL(fb_notifier_call_chain); |