bluetooth: hci_core: defer hci_unregister_sysfs()
[pv_ops_mirror.git] / arch / arm / mach-aaec2000 / clock.c
blob74aa7a39bb68d9d09c281dd7c97612c206291afd
1 /*
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>
21 #include <asm/semaphore.h>
23 #include "clock.h"
25 static LIST_HEAD(clocks);
26 static DEFINE_MUTEX(clocks_mutex);
28 struct clk *clk_get(struct device *dev, const char *id)
30 struct clk *p, *clk = ERR_PTR(-ENOENT);
32 mutex_lock(&clocks_mutex);
33 list_for_each_entry(p, &clocks, node) {
34 if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
35 clk = p;
36 break;
39 mutex_unlock(&clocks_mutex);
41 return clk;
43 EXPORT_SYMBOL(clk_get);
45 void clk_put(struct clk *clk)
47 module_put(clk->owner);
49 EXPORT_SYMBOL(clk_put);
51 int clk_enable(struct clk *clk)
53 return 0;
55 EXPORT_SYMBOL(clk_enable);
57 void clk_disable(struct clk *clk)
60 EXPORT_SYMBOL(clk_disable);
62 unsigned long clk_get_rate(struct clk *clk)
64 return clk->rate;
66 EXPORT_SYMBOL(clk_get_rate);
68 long clk_round_rate(struct clk *clk, unsigned long rate)
70 return rate;
72 EXPORT_SYMBOL(clk_round_rate);
74 int clk_set_rate(struct clk *clk, unsigned long rate)
76 return 0;
78 EXPORT_SYMBOL(clk_set_rate);
80 int clk_register(struct clk *clk)
82 mutex_lock(&clocks_mutex);
83 list_add(&clk->node, &clocks);
84 mutex_unlock(&clocks_mutex);
85 return 0;
87 EXPORT_SYMBOL(clk_register);
89 void clk_unregister(struct clk *clk)
91 mutex_lock(&clocks_mutex);
92 list_del(&clk->node);
93 mutex_unlock(&clocks_mutex);
95 EXPORT_SYMBOL(clk_unregister);
97 static int __init clk_init(void)
99 return 0;
101 arch_initcall(clk_init);