timer-goldfish.h 1007 B

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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. #ifndef _CLOCKSOURCE_TIMER_GOLDFISH_H
  7. #define _CLOCKSOURCE_TIMER_GOLDFISH_H
  8. /*
  9. * TIMER_TIME_LOW get low bits of current time and update TIMER_TIME_HIGH
  10. * TIMER_TIME_HIGH get high bits of time at last TIMER_TIME_LOW read
  11. * TIMER_ALARM_LOW set low bits of alarm and activate it
  12. * TIMER_ALARM_HIGH set high bits of next alarm
  13. * TIMER_IRQ_ENABLED enable alarm interrupt
  14. * TIMER_CLEAR_ALARM disarm an existing alarm
  15. * TIMER_ALARM_STATUS alarm status (running or not)
  16. * TIMER_CLEAR_INTERRUPT clear interrupt
  17. */
  18. #define TIMER_TIME_LOW 0x00
  19. #define TIMER_TIME_HIGH 0x04
  20. #define TIMER_ALARM_LOW 0x08
  21. #define TIMER_ALARM_HIGH 0x0c
  22. #define TIMER_IRQ_ENABLED 0x10
  23. #define TIMER_CLEAR_ALARM 0x14
  24. #define TIMER_ALARM_STATUS 0x18
  25. #define TIMER_CLEAR_INTERRUPT 0x1c
  26. extern int goldfish_timer_init(int irq, void __iomem *base);
  27. #endif /* _CLOCKSOURCE_TIMER_GOLDFISH_H */