Commit | Line | Data |
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6a438309 AB |
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 | ||
20 | unsigned int get_c0_compare_int(void) | |
21 | { | |
22 | return gic_get_c0_compare_int(); | |
23 | } | |
24 | ||
25 | int get_c0_perfcount_int(void) | |
26 | { | |
27 | return gic_get_c0_perfcount_int(); | |
28 | } | |
0cb0985f | 29 | EXPORT_SYMBOL_GPL(get_c0_perfcount_int); |
6a438309 | 30 | |
6b5e741e JH |
31 | int get_c0_fdc_int(void) |
32 | { | |
33 | return gic_get_c0_fdc_int(); | |
34 | } | |
35 | ||
6a438309 AB |
36 | void __init plat_time_init(void) |
37 | { | |
38 | struct device_node *np; | |
39 | struct clk *clk; | |
40 | ||
41 | of_clk_init(NULL); | |
3722ed23 | 42 | clocksource_probe(); |
6a438309 AB |
43 | |
44 | np = of_get_cpu_node(0, NULL); | |
45 | if (!np) { | |
46 | pr_err("Failed to get CPU node\n"); | |
47 | return; | |
48 | } | |
49 | ||
50 | clk = of_clk_get(np, 0); | |
51 | if (IS_ERR(clk)) { | |
52 | pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk)); | |
53 | return; | |
54 | } | |
55 | ||
56 | mips_hpt_frequency = clk_get_rate(clk) / 2; | |
57 | clk_put(clk); | |
58 | } |