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- /*
- * linux/arch/arm/mach-aaec2000/clock.c
- *
- * Copyright (C) 2005 Nicolas Bellido Y Ortega
- *
- * Based on linux/arch/arm/mach-integrator/clock.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/list.h>
- #include <linux/errno.h>
- #include <linux/err.h>
- #include <linux/string.h>
- #include <linux/clk.h>
- #include <linux/mutex.h>
- #include <asm/semaphore.h>
- #include "clock.h"
- static LIST_HEAD(clocks);
- static DEFINE_MUTEX(clocks_mutex);
- struct clk *clk_get(struct device *dev, const char *id)
- {
- struct clk *p, *clk = ERR_PTR(-ENOENT);
- mutex_lock(&clocks_mutex);
- list_for_each_entry(p, &clocks, node) {
- if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
- clk = p;
- break;
- }
- }
- mutex_unlock(&clocks_mutex);
- return clk;
- }
- EXPORT_SYMBOL(clk_get);
- void clk_put(struct clk *clk)
- {
- module_put(clk->owner);
- }
- EXPORT_SYMBOL(clk_put);
- int clk_enable(struct clk *clk)
- {
- return 0;
- }
- EXPORT_SYMBOL(clk_enable);
- void clk_disable(struct clk *clk)
- {
- }
- EXPORT_SYMBOL(clk_disable);
- unsigned long clk_get_rate(struct clk *clk)
- {
- return clk->rate;
- }
- EXPORT_SYMBOL(clk_get_rate);
- long clk_round_rate(struct clk *clk, unsigned long rate)
- {
- return rate;
- }
- EXPORT_SYMBOL(clk_round_rate);
- int clk_set_rate(struct clk *clk, unsigned long rate)
- {
- return 0;
- }
- EXPORT_SYMBOL(clk_set_rate);
- int clk_register(struct clk *clk)
- {
- mutex_lock(&clocks_mutex);
- list_add(&clk->node, &clocks);
- mutex_unlock(&clocks_mutex);
- return 0;
- }
- EXPORT_SYMBOL(clk_register);
- void clk_unregister(struct clk *clk)
- {
- mutex_lock(&clocks_mutex);
- list_del(&clk->node);
- mutex_unlock(&clocks_mutex);
- }
- EXPORT_SYMBOL(clk_unregister);
- static int __init clk_init(void)
- {
- return 0;
- }
- arch_initcall(clk_init);
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