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dw_apb_timer.h

dw_apb_timer.h 1.8 KB
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  1. /*
    2. 

  2.  * (C) Copyright 2009 Intel Corporation
    3. 

  3.  * Author: Jacob Pan (jacob.jun.pan@intel.com)
    4. 

  4.  *
    5. 

  5.  * Shared with ARM platforms, Jamie Iles, Picochip 2011
    6. 

  6.  *
    7. 

  7.  * This program is free software; you can redistribute it and/or modify
    8. 

  8.  * it under the terms of the GNU General Public License version 2 as
    9. 

  9.  * published by the Free Software Foundation.
    10. 

  10.  *
    11. 

  11.  * Support for the Synopsys DesignWare APB Timers.
    12. 

  12.  */
    13. 

  13. #ifndef __DW_APB_TIMER_H__
    14. 

  14. #define __DW_APB_TIMER_H__
    15. 

  15. 

  16. #include <linux/clockchips.h>
    17. 

  17. #include <linux/clocksource.h>
    18. 

  18. #include <linux/interrupt.h>
    19. 

  19. 

  20. #define APBTMRS_REG_SIZE       0x14
    21. 

  21. 

  22. struct dw_apb_timer {
    23. 

  23. 	void __iomem				*base;
    24. 

  24. 	unsigned long				freq;
    25. 

  25. 	int					irq;
    26. 

  26. };
    27. 

  27. 

  28. struct dw_apb_clock_event_device {
    29. 

  29. 	struct clock_event_device		ced;
    30. 

  30. 	struct dw_apb_timer			timer;
    31. 

  31. 	struct irqaction			irqaction;
    32. 

  32. 	void					(*eoi)(struct dw_apb_timer *);
    33. 

  33. };
    34. 

  34. 

  35. struct dw_apb_clocksource {
    36. 

  36. 	struct dw_apb_timer			timer;
    37. 

  37. 	struct clocksource			cs;
    38. 

  38. };
    39. 

  39. 

  40. void dw_apb_clockevent_register(struct dw_apb_clock_event_device *dw_ced);
    41. 

  41. void dw_apb_clockevent_pause(struct dw_apb_clock_event_device *dw_ced);
    42. 

  42. void dw_apb_clockevent_resume(struct dw_apb_clock_event_device *dw_ced);
    43. 

  43. void dw_apb_clockevent_stop(struct dw_apb_clock_event_device *dw_ced);
    44. 

  44. 

  45. struct dw_apb_clock_event_device *
    46. 

  46. dw_apb_clockevent_init(int cpu, const char *name, unsigned rating,
    47. 

  47. 		       void __iomem *base, int irq, unsigned long freq);
    48. 

  48. struct dw_apb_clocksource *
    49. 

  49. dw_apb_clocksource_init(unsigned rating, const char *name, void __iomem *base,
    50. 

  50. 			unsigned long freq);
    51. 

  51. void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs);
    52. 

  52. void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
    53. 

  53. cycle_t dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
    54. 

  54. void dw_apb_clocksource_unregister(struct dw_apb_clocksource *dw_cs);
    55. 

  55. 

  56. #endif /* __DW_APB_TIMER_H__ */
    57. 

  57.