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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* | |
3 | * goldfish-timer clocksource | |
4 | * Registers definition for the goldfish-timer device | |
5 | */ | |
6 | ||
7 | #ifndef _CLOCKSOURCE_TIMER_GOLDFISH_H | |
8 | #define _CLOCKSOURCE_TIMER_GOLDFISH_H | |
9 | ||
10 | /* | |
11 | * TIMER_TIME_LOW get low bits of current time and update TIMER_TIME_HIGH | |
12 | * TIMER_TIME_HIGH get high bits of time at last TIMER_TIME_LOW read | |
13 | * TIMER_ALARM_LOW set low bits of alarm and activate it | |
14 | * TIMER_ALARM_HIGH set high bits of next alarm | |
15 | * TIMER_IRQ_ENABLED enable alarm interrupt | |
16 | * TIMER_CLEAR_ALARM disarm an existing alarm | |
17 | * TIMER_ALARM_STATUS alarm status (running or not) | |
18 | * TIMER_CLEAR_INTERRUPT clear interrupt | |
19 | */ | |
20 | #define TIMER_TIME_LOW 0x00 | |
21 | #define TIMER_TIME_HIGH 0x04 | |
22 | #define TIMER_ALARM_LOW 0x08 | |
23 | #define TIMER_ALARM_HIGH 0x0c | |
24 | #define TIMER_IRQ_ENABLED 0x10 | |
25 | #define TIMER_CLEAR_ALARM 0x14 | |
26 | #define TIMER_ALARM_STATUS 0x18 | |
27 | #define TIMER_CLEAR_INTERRUPT 0x1c | |
28 | ||
29 | extern int goldfish_timer_init(int irq, void __iomem *base); | |
30 | ||
31 | #endif /* _CLOCKSOURCE_TIMER_GOLDFISH_H */ |