1/*
2 * Pistachio clocksource/timer setup
3 *
4 * Copyright (C) 2014 Google, Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 */
10
11#include <linux/clk.h>
12#include <linux/clk-provider.h>
13#include <linux/clocksource.h>
14#include <linux/init.h>
15#include <linux/irqchip/mips-gic.h>
16#include <linux/of.h>
17
18#include <asm/time.h>
19
20unsigned int get_c0_compare_int(void)
21{
22	return gic_get_c0_compare_int();
23}
24
25int get_c0_perfcount_int(void)
26{
27	return gic_get_c0_perfcount_int();
28}
29EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
30
31void __init plat_time_init(void)
32{
33	struct device_node *np;
34	struct clk *clk;
35
36	of_clk_init(NULL);
37	clocksource_of_init();
38
39	np = of_get_cpu_node(0, NULL);
40	if (!np) {
41		pr_err("Failed to get CPU node\n");
42		return;
43	}
44
45	clk = of_clk_get(np, 0);
46	if (IS_ERR(clk)) {
47		pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk));
48		return;
49	}
50
51	mips_hpt_frequency = clk_get_rate(clk) / 2;
52	clk_put(clk);
53}
54