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 
34 struct 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 
44 void emu10k1_timer_install(struct emu10k1_card *, struct emu_timer *, u16);
45 void emu10k1_timer_uninstall(struct emu10k1_card *, struct emu_timer *);
46 void emu10k1_timer_enable(struct emu10k1_card *, struct emu_timer *);
47 void 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 */
55