2 * (C) Copyright 2009 Intel Corporation
3 * Author: Jacob Pan (jacob.jun.pan@intel.com)
5 * Shared with ARM platforms, Jamie Iles, Picochip 2011
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.
11 * Support for the Synopsys DesignWare APB Timers.
13 #ifndef __DW_APB_TIMER_H__
14 #define __DW_APB_TIMER_H__
16 #include <linux/clockchips.h>
17 #include <linux/clocksource.h>
18 #include <linux/interrupt.h>
20 #define APBTMR_N_LOAD_COUNT 0x00
21 #define APBTMR_N_CURRENT_VALUE 0x04
22 #define APBTMR_N_CONTROL 0x08
23 #define APBTMR_N_EOI 0x0c
24 #define APBTMR_N_INT_STATUS 0x10
26 #define APBTMRS_REG_SIZE 0x14
34 struct dw_apb_clock_event_device {
35 struct clock_event_device ced;
36 struct dw_apb_timer timer;
37 struct irqaction irqaction;
38 void (*eoi)(struct dw_apb_timer *);
41 struct dw_apb_clocksource {
42 struct dw_apb_timer timer;
43 struct clocksource cs;
46 void dw_apb_clockevent_register(struct dw_apb_clock_event_device *dw_ced);
47 void dw_apb_clockevent_pause(struct dw_apb_clock_event_device *dw_ced);
48 void dw_apb_clockevent_resume(struct dw_apb_clock_event_device *dw_ced);
49 void dw_apb_clockevent_stop(struct dw_apb_clock_event_device *dw_ced);
51 struct dw_apb_clock_event_device *
52 dw_apb_clockevent_init(int cpu, const char *name, unsigned rating,
53 void __iomem *base, int irq, unsigned long freq);
54 struct dw_apb_clocksource *
55 dw_apb_clocksource_init(unsigned rating, const char *name, void __iomem *base,
57 void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs);
58 void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
59 cycle_t dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
61 extern void dw_apb_timer_init(void);
62 #endif /* __DW_APB_TIMER_H__ */