1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * TI DaVinci clocksource driver |
4 | * |
5 | * Copyright (C) 2019 Texas Instruments |
6 | * Author: Bartosz Golaszewski <bgolaszewski@baylibre.com> |
7 | */ |
8 | |
9 | #ifndef __TIMER_DAVINCI_H__ |
10 | #define __TIMER_DAVINCI_H__ |
11 | |
12 | #include <linux/clk.h> |
13 | #include <linux/ioport.h> |
14 | |
15 | enum { |
16 | DAVINCI_TIMER_CLOCKEVENT_IRQ, |
17 | DAVINCI_TIMER_CLOCKSOURCE_IRQ, |
18 | DAVINCI_TIMER_NUM_IRQS, |
19 | }; |
20 | |
21 | /** |
22 | * struct davinci_timer_cfg - davinci clocksource driver configuration struct |
23 | * @reg: register range resource |
24 | * @irq: clockevent and clocksource interrupt resources |
25 | * @cmp_off: if set - it specifies the compare register used for clockevent |
26 | * |
27 | * Note: if the compare register is specified, the driver will use the bottom |
28 | * clock half for both clocksource and clockevent and the compare register |
29 | * to generate event irqs. The user must supply the correct compare register |
30 | * interrupt number. |
31 | * |
32 | * This is only used by da830 the DSP of which uses the top half. The timer |
33 | * driver still configures the top half to run in free-run mode. |
34 | */ |
35 | struct davinci_timer_cfg { |
36 | struct resource reg; |
37 | struct resource irq[DAVINCI_TIMER_NUM_IRQS]; |
38 | unsigned int cmp_off; |
39 | }; |
40 | |
41 | int __init davinci_timer_register(struct clk *clk, |
42 | const struct davinci_timer_cfg *data); |
43 | |
44 | #endif /* __TIMER_DAVINCI_H__ */ |
45 | |