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yaml
---
r: 360066
b: refs/heads/master
c: 3f0a06b
h: refs/heads/master
v: v3
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John Crispin committed Feb 17, 2013
1 parent d942ada commit 9c34e55
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 7e47cefa69c8ed2c889522ce29fcce73ce8cf08e
refs/heads/master: 3f0a06b0368d25608841843e9d65a7289ad9f14a
72 changes: 72 additions & 0 deletions trunk/arch/mips/ralink/clk.c
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/*
* 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.
*
* Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2013 John Crispin <blogic@openwrt.org>
*/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/clkdev.h>
#include <linux/clk.h>

#include <asm/time.h>

#include "common.h"

struct clk {
struct clk_lookup cl;
unsigned long rate;
};

void ralink_clk_add(const char *dev, unsigned long rate)
{
struct clk *clk = kzalloc(sizeof(struct clk), GFP_KERNEL);

if (!clk)
panic("failed to add clock\n");

clk->cl.dev_id = dev;
clk->cl.clk = clk;

clk->rate = rate;

clkdev_add(&clk->cl);
}

/*
* Linux clock API
*/
int clk_enable(struct clk *clk)
{
return 0;
}
EXPORT_SYMBOL_GPL(clk_enable);

void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL_GPL(clk_disable);

unsigned long clk_get_rate(struct clk *clk)
{
return clk->rate;
}
EXPORT_SYMBOL_GPL(clk_get_rate);

void __init plat_time_init(void)
{
struct clk *clk;

ralink_of_remap();

ralink_clk_init();
clk = clk_get_sys("cpu", NULL);
if (IS_ERR(clk))
panic("unable to get CPU clock, err=%ld", PTR_ERR(clk));
pr_info("CPU Clock: %ldMHz\n", clk_get_rate(clk) / 1000000);
mips_hpt_frequency = clk_get_rate(clk) / 2;
clk_put(clk);
}

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