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1 | /* |
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 | ||
34 | extern int arch_timer_init(void); | |
35 | extern u32 arch_timer_get_rate(void); | |
36 | extern u64 (*arch_timer_read_counter)(void); | |
37 | extern struct timecounter *arch_timer_get_timecounter(void); | |
38 | ||
39 | #else | |
40 | ||
41 | static inline int arch_timer_init(void) | |
42 | { | |
43 | return -ENXIO; | |
44 | } | |
45 | ||
46 | static inline u32 arch_timer_get_rate(void) | |
47 | { | |
48 | return 0; | |
49 | } | |
50 | ||
51 | static inline u64 arch_timer_read_counter(void) | |
52 | { | |
53 | return 0; | |
54 | } | |
55 | ||
56 | static struct timecounter *arch_timer_get_timecounter(void) | |
57 | { | |
58 | return NULL; | |
59 | } | |
60 | ||
61 | #endif | |
62 | ||
63 | #endif |