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Mark Rutland8a4da6e2012-11-12 14:33:44 +00001/*
2 * Copyright (C) 2012 ARM Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16#ifndef __CLKSOURCE_ARM_ARCH_TIMER_H
17#define __CLKSOURCE_ARM_ARCH_TIMER_H
18
19#include <linux/clocksource.h>
20#include <linux/types.h>
21
22#define ARCH_TIMER_CTRL_ENABLE (1 << 0)
23#define ARCH_TIMER_CTRL_IT_MASK (1 << 1)
24#define ARCH_TIMER_CTRL_IT_STAT (1 << 2)
25
26#define ARCH_TIMER_REG_CTRL 0
27#define ARCH_TIMER_REG_TVAL 1
28
29#define ARCH_TIMER_PHYS_ACCESS 0
30#define ARCH_TIMER_VIRT_ACCESS 1
31
32#ifdef CONFIG_ARM_ARCH_TIMER
33
Mark Rutland8a4da6e2012-11-12 14:33:44 +000034extern u32 arch_timer_get_rate(void);
Mark Rutland0d651e42013-01-30 17:51:26 +000035extern u64 arch_timer_read_counter(void);
Mark Rutland8a4da6e2012-11-12 14:33:44 +000036extern struct timecounter *arch_timer_get_timecounter(void);
37
38#else
39
Mark Rutland8a4da6e2012-11-12 14:33:44 +000040static inline u32 arch_timer_get_rate(void)
41{
42 return 0;
43}
44
45static inline u64 arch_timer_read_counter(void)
46{
47 return 0;
48}
49
Olof Johansson0582b052013-02-11 15:15:53 -080050static inline struct timecounter *arch_timer_get_timecounter(void)
Mark Rutland8a4da6e2012-11-12 14:33:44 +000051{
52 return NULL;
53}
54
55#endif
56
57#endif