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8ad68bbf CM |
1 | /* |
2 | * linux/arch/arm/mach-realview/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> | |
cf30fb4a | 13 | #include <linux/device.h> |
8ad68bbf CM |
14 | #include <linux/list.h> |
15 | #include <linux/errno.h> | |
16 | #include <linux/err.h> | |
cf30fb4a | 17 | #include <linux/string.h> |
f8ce2547 | 18 | #include <linux/clk.h> |
00431707 | 19 | #include <linux/mutex.h> |
8ad68bbf | 20 | |
8ad68bbf CM |
21 | #include <asm/hardware/icst307.h> |
22 | ||
23 | #include "clock.h" | |
24 | ||
8ad68bbf CM |
25 | int clk_enable(struct clk *clk) |
26 | { | |
27 | return 0; | |
28 | } | |
29 | EXPORT_SYMBOL(clk_enable); | |
30 | ||
31 | void clk_disable(struct clk *clk) | |
32 | { | |
33 | } | |
34 | EXPORT_SYMBOL(clk_disable); | |
35 | ||
8ad68bbf CM |
36 | unsigned long clk_get_rate(struct clk *clk) |
37 | { | |
38 | return clk->rate; | |
39 | } | |
40 | EXPORT_SYMBOL(clk_get_rate); | |
41 | ||
42 | long clk_round_rate(struct clk *clk, unsigned long rate) | |
43 | { | |
cf30fb4a RK |
44 | struct icst307_vco vco; |
45 | vco = icst307_khz_to_vco(clk->params, rate / 1000); | |
46 | return icst307_khz(clk->params, vco) * 1000; | |
8ad68bbf CM |
47 | } |
48 | EXPORT_SYMBOL(clk_round_rate); | |
49 | ||
50 | int clk_set_rate(struct clk *clk, unsigned long rate) | |
51 | { | |
52 | int ret = -EIO; | |
53 | ||
54 | if (clk->setvco) { | |
55 | struct icst307_vco vco; | |
56 | ||
57 | vco = icst307_khz_to_vco(clk->params, rate / 1000); | |
58 | clk->rate = icst307_khz(clk->params, vco) * 1000; | |
8ad68bbf CM |
59 | clk->setvco(clk, vco); |
60 | ret = 0; | |
61 | } | |
62 | return ret; | |
63 | } | |
64 | EXPORT_SYMBOL(clk_set_rate); |