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 | |