2 * linux/arch/arm/mach-aaec2000/clock.c
4 * Copyright (C) 2005 Nicolas Bellido Y Ortega
6 * Based on linux/arch/arm/mach-integrator/clock.c
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/list.h>
15 #include <linux/errno.h>
16 #include <linux/err.h>
17 #include <linux/string.h>
18 #include <linux/clk.h>
19 #include <linux/mutex.h>
23 static LIST_HEAD(clocks);
24 static DEFINE_MUTEX(clocks_mutex);
26 struct clk *clk_get(struct device *dev, const char *id)
28 struct clk *p, *clk = ERR_PTR(-ENOENT);
30 mutex_lock(&clocks_mutex);
31 list_for_each_entry(p, &clocks, node) {
32 if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
37 mutex_unlock(&clocks_mutex);
41 EXPORT_SYMBOL(clk_get);
43 void clk_put(struct clk *clk)
45 module_put(clk->owner);
47 EXPORT_SYMBOL(clk_put);
49 int clk_enable(struct clk *clk)
53 EXPORT_SYMBOL(clk_enable);
55 void clk_disable(struct clk *clk)
58 EXPORT_SYMBOL(clk_disable);
60 unsigned long clk_get_rate(struct clk *clk)
64 EXPORT_SYMBOL(clk_get_rate);
66 long clk_round_rate(struct clk *clk, unsigned long rate)
70 EXPORT_SYMBOL(clk_round_rate);
72 int clk_set_rate(struct clk *clk, unsigned long rate)
76 EXPORT_SYMBOL(clk_set_rate);
78 int clk_register(struct clk *clk)
80 mutex_lock(&clocks_mutex);
81 list_add(&clk->node, &clocks);
82 mutex_unlock(&clocks_mutex);
85 EXPORT_SYMBOL(clk_register);
87 void clk_unregister(struct clk *clk)
89 mutex_lock(&clocks_mutex);
91 mutex_unlock(&clocks_mutex);
93 EXPORT_SYMBOL(clk_unregister);
95 static int __init clk_init(void)
99 arch_initcall(clk_init);