mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 04:40:55 +07:00
00431707be
The arm clock semaphores are strict mutexes, convert them to the new mutex implementation Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
102 lines
1.9 KiB
C
102 lines
1.9 KiB
C
/*
|
|
* 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);
|