Merge branch 'devel-stable' into devel
[linux-3.10.git] / arch / arm / mach-integrator / clock.c
1 /*
2  *  linux/arch/arm/mach-integrator/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>
13 #include <linux/errno.h>
14 #include <linux/clk.h>
15 #include <linux/mutex.h>
16
17 #include <asm/clkdev.h>
18 #include <mach/clkdev.h>
19
20 int clk_enable(struct clk *clk)
21 {
22         return 0;
23 }
24 EXPORT_SYMBOL(clk_enable);
25
26 void clk_disable(struct clk *clk)
27 {
28 }
29 EXPORT_SYMBOL(clk_disable);
30
31 unsigned long clk_get_rate(struct clk *clk)
32 {
33         return clk->rate;
34 }
35 EXPORT_SYMBOL(clk_get_rate);
36
37 long clk_round_rate(struct clk *clk, unsigned long rate)
38 {
39         struct icst525_vco vco;
40         vco = icst525_khz_to_vco(clk->params, rate / 1000);
41         return icst525_khz(clk->params, vco) * 1000;
42 }
43 EXPORT_SYMBOL(clk_round_rate);
44
45 int clk_set_rate(struct clk *clk, unsigned long rate)
46 {
47         int ret = -EIO;
48
49         if (clk->setvco) {
50                 struct icst525_vco vco;
51
52                 vco = icst525_khz_to_vco(clk->params, rate / 1000);
53                 clk->rate = icst525_khz(clk->params, vco) * 1000;
54                 clk->setvco(clk, vco);
55                 ret = 0;
56         }
57         return ret;
58 }
59 EXPORT_SYMBOL(clk_set_rate);