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-rw-r--r--sound/oss/emu10k1/timer.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/sound/oss/emu10k1/timer.h b/sound/oss/emu10k1/timer.h
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1/*
2 **********************************************************************
3 * timer.h
4 * Copyright (C) 1999, 2000 Creative Labs, Inc.
5 *
6 **********************************************************************
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public
19 * License along with this program; if not, write to the Free
20 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
21 * USA.
22 *
23 **********************************************************************
24 */
25
26
27#ifndef _TIMER_H
28#define _TIMER_H
29
30#include <linux/sched.h>
31#include <linux/interrupt.h>
32#include "hwaccess.h"
33
34struct emu_timer
35{
36 struct list_head list;
37 struct tasklet_struct tasklet;
38 u8 state;
39 u16 count; /* current number of interrupts */
40 u16 count_max; /* number of interrupts needed to schedule the bh */
41 u16 delay; /* timer delay */
42};
43
44void emu10k1_timer_install(struct emu10k1_card *, struct emu_timer *, u16);
45void emu10k1_timer_uninstall(struct emu10k1_card *, struct emu_timer *);
46void emu10k1_timer_enable(struct emu10k1_card *, struct emu_timer *);
47void emu10k1_timer_disable(struct emu10k1_card *, struct emu_timer *);
48
49#define TIMER_STOPPED 0xffff
50#define TIMER_STATE_INSTALLED 0x01
51#define TIMER_STATE_ACTIVE 0x02
52#define TIMER_STATE_UNINSTALLED 0x04
53
54#endif /* _TIMER_H */