1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * (C) Copyright 2009 Intel Corporation
4 * Author: Jacob Pan (jacob.jun.pan@intel.com)
5 *
6 * Shared with ARM platforms, Jamie Iles, Picochip 2011
7 *
8 * Support for the Synopsys DesignWare APB Timers.
9 */
10 #ifndef __DW_APB_TIMER_H__
11 #define __DW_APB_TIMER_H__
12
13 #include <linux/clockchips.h>
14 #include <linux/clocksource.h>
15 #include <linux/interrupt.h>
16
17 #define APBTMRS_REG_SIZE 0x14
18
19 struct dw_apb_timer {
20 void __iomem *base;
21 unsigned long freq;
22 int irq;
23 };
24
25 struct dw_apb_clock_event_device {
26 struct clock_event_device ced;
27 struct dw_apb_timer timer;
28 void (*eoi)(struct dw_apb_timer *);
29 };
30
31 struct dw_apb_clocksource {
32 struct dw_apb_timer timer;
33 struct clocksource cs;
34 };
35
36 void dw_apb_clockevent_register(struct dw_apb_clock_event_device *dw_ced);
37 void dw_apb_clockevent_pause(struct dw_apb_clock_event_device *dw_ced);
38 void dw_apb_clockevent_resume(struct dw_apb_clock_event_device *dw_ced);
39 void dw_apb_clockevent_stop(struct dw_apb_clock_event_device *dw_ced);
40
41 struct dw_apb_clock_event_device *
42 dw_apb_clockevent_init(int cpu, const char *name, unsigned rating,
43 void __iomem *base, int irq, unsigned long freq);
44 struct dw_apb_clocksource *
45 dw_apb_clocksource_init(unsigned rating, const char *name, void __iomem *base,
46 unsigned long freq);
47 void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs);
48 void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
49 u64 dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
50
51 #endif /* __DW_APB_TIMER_H__ */
52
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