1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * ARM timer implementation, found in Integrator, Versatile and Realview
4 * platforms.  Not all platforms support all registers and bits in these
5 * registers, so we mark them with A for Integrator AP, C for Integrator
6 * CP, V for Versatile and R for Realview.
7 *
8 * Integrator AP has 16-bit timers, Integrator CP, Versatile and Realview
9 * can have 16-bit or 32-bit selectable via a bit in the control register.
10 *
11 * Every SP804 contains two identical timers.
12 */
13#define NR_TIMERS	2
14#define TIMER_1_BASE	0x00
15#define TIMER_2_BASE	0x20
16
17#define TIMER_LOAD	0x00			/* ACVR rw */
18#define TIMER_VALUE	0x04			/* ACVR ro */
19#define TIMER_CTRL	0x08			/* ACVR rw */
20#define TIMER_CTRL_ONESHOT	(1 << 0)	/*  CVR */
21#define TIMER_CTRL_32BIT	(1 << 1)	/*  CVR */
22#define TIMER_CTRL_DIV1		(0 << 2)	/* ACVR */
23#define TIMER_CTRL_DIV16	(1 << 2)	/* ACVR */
24#define TIMER_CTRL_DIV256	(2 << 2)	/* ACVR */
25#define TIMER_CTRL_IE		(1 << 5)	/*   VR */
26#define TIMER_CTRL_PERIODIC	(1 << 6)	/* ACVR */
27#define TIMER_CTRL_ENABLE	(1 << 7)	/* ACVR */
28
29#define TIMER_INTCLR	0x0c			/* ACVR wo */
30#define TIMER_RIS	0x10			/*  CVR ro */
31#define TIMER_MIS	0x14			/*  CVR ro */
32#define TIMER_BGLOAD	0x18			/*  CVR rw */
33
34struct sp804_timer {
35	int load;
36	int load_h;
37	int value;
38	int value_h;
39	int ctrl;
40	int intclr;
41	int ris;
42	int mis;
43	int bgload;
44	int bgload_h;
45	int timer_base[NR_TIMERS];
46	int width;
47};
48
49struct sp804_clkevt {
50	void __iomem *base;
51	void __iomem *load;
52	void __iomem *load_h;
53	void __iomem *value;
54	void __iomem *value_h;
55	void __iomem *ctrl;
56	void __iomem *intclr;
57	void __iomem *ris;
58	void __iomem *mis;
59	void __iomem *bgload;
60	void __iomem *bgload_h;
61	unsigned long reload;
62	int width;
63};
64