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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-versatile/clock.c | |
3 | * | |
4 | * Copyright (C) 2004 ARM Limited. | |
5 | * Written by Deep Blue Solutions Limited. | |
6 | * | |
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. | |
10 | */ | |
11 | #include <linux/module.h> | |
12 | #include <linux/kernel.h> | |
71a06da0 | 13 | #include <linux/device.h> |
1da177e4 LT |
14 | #include <linux/list.h> |
15 | #include <linux/errno.h> | |
16 | #include <linux/err.h> | |
4e57b681 | 17 | #include <linux/string.h> |
f8ce2547 | 18 | #include <linux/clk.h> |
00431707 | 19 | #include <linux/mutex.h> |
1da177e4 | 20 | |
71a06da0 | 21 | #include <asm/clkdev.h> |
1da177e4 LT |
22 | #include <asm/hardware/icst307.h> |
23 | ||
24 | #include "clock.h" | |
25 | ||
1da177e4 LT |
26 | int clk_enable(struct clk *clk) |
27 | { | |
28 | return 0; | |
29 | } | |
30 | EXPORT_SYMBOL(clk_enable); | |
31 | ||
32 | void clk_disable(struct clk *clk) | |
33 | { | |
34 | } | |
35 | EXPORT_SYMBOL(clk_disable); | |
36 | ||
1da177e4 LT |
37 | unsigned long clk_get_rate(struct clk *clk) |
38 | { | |
39 | return clk->rate; | |
40 | } | |
41 | EXPORT_SYMBOL(clk_get_rate); | |
42 | ||
43 | long clk_round_rate(struct clk *clk, unsigned long rate) | |
44 | { | |
71a06da0 RK |
45 | struct icst307_vco vco; |
46 | vco = icst307_khz_to_vco(clk->params, rate / 1000); | |
47 | return icst307_khz(clk->params, vco) * 1000; | |
1da177e4 LT |
48 | } |
49 | EXPORT_SYMBOL(clk_round_rate); | |
50 | ||
51 | int clk_set_rate(struct clk *clk, unsigned long rate) | |
52 | { | |
53 | int ret = -EIO; | |
54 | ||
55 | if (clk->setvco) { | |
56 | struct icst307_vco vco; | |
57 | ||
58 | vco = icst307_khz_to_vco(clk->params, rate / 1000); | |
59 | clk->rate = icst307_khz(clk->params, vco) * 1000; | |
1da177e4 LT |
60 | clk->setvco(clk, vco); |
61 | ret = 0; | |
62 | } | |
63 | return ret; | |
64 | } | |
65 | EXPORT_SYMBOL(clk_set_rate); |