1 /*
2  * (C) Copyright 2009 Intel Corporation
3  * Author: Jacob Pan (jacob.jun.pan@intel.com)
4  *
5  * Shared with ARM platforms, Jamie Iles, Picochip 2011
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  *
11  * Support for the Synopsys DesignWare APB Timers.
12  */
13 #ifndef __DW_APB_TIMER_H__
14 #define __DW_APB_TIMER_H__
15 
16 #include <linux/clockchips.h>
17 #include <linux/clocksource.h>
18 #include <linux/interrupt.h>
19 
20 #define APBTMRS_REG_SIZE       0x14
21 
22 struct dw_apb_timer {
23 	void __iomem				*base;
24 	unsigned long				freq;
25 	int					irq;
26 };
27 
28 struct dw_apb_clock_event_device {
29 	struct clock_event_device		ced;
30 	struct dw_apb_timer			timer;
31 	struct irqaction			irqaction;
32 	void					(*eoi)(struct dw_apb_timer *);
33 };
34 
35 struct dw_apb_clocksource {
36 	struct dw_apb_timer			timer;
37 	struct clocksource			cs;
38 };
39 
40 void dw_apb_clockevent_register(struct dw_apb_clock_event_device *dw_ced);
41 void dw_apb_clockevent_pause(struct dw_apb_clock_event_device *dw_ced);
42 void dw_apb_clockevent_resume(struct dw_apb_clock_event_device *dw_ced);
43 void dw_apb_clockevent_stop(struct dw_apb_clock_event_device *dw_ced);
44 
45 struct dw_apb_clock_event_device *
46 dw_apb_clockevent_init(int cpu, const char *name, unsigned rating,
47 		       void __iomem *base, int irq, unsigned long freq);
48 struct dw_apb_clocksource *
49 dw_apb_clocksource_init(unsigned rating, const char *name, void __iomem *base,
50 			unsigned long freq);
51 void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs);
52 void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
53 cycle_t dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
54 void dw_apb_clocksource_unregister(struct dw_apb_clocksource *dw_cs);
55 
56 #endif /* __DW_APB_TIMER_H__ */
57