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/*
* Copyright (C) 2009 ST-Ericsson
* heavily based on realview platform
*
* 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/clk.h>
#include <linux/mutex.h>
#include <asm/clkdev.h>
/* currently the clk structure
* just supports rate. This would
* be extended as and when new devices are
* added - TODO
*/
struct clk {
unsigned long rate;
};
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)
{
/*TODO*/
return rate;
}
EXPORT_SYMBOL(clk_round_rate);
int clk_set_rate(struct clk *clk, unsigned long rate)
{
clk->rate = rate;
return 0;
}
EXPORT_SYMBOL(clk_set_rate);
/* ssp clock */
static struct clk ssp_clk = {
.rate = 48000000,
};
/* fixed clock */
static struct clk f38_clk = {
.rate = 38400000,
};
static struct clk_lookup lookups[] = {
{
/* UART0 */
.dev_id = "uart0",
.clk = &f38_clk,
}, { /* UART1 */
.dev_id = "uart1",
.clk = &f38_clk,
}, { /* UART2 */
.dev_id = "uart2",
.clk = &f38_clk,
}, { /* SSP */
.dev_id = "pl022",
.clk = &ssp_clk,
}
};
static int __init clk_init(void)
{
int i;
/* register the clock lookups */
for (i = 0; i < ARRAY_SIZE(lookups); i++)
clkdev_add(&lookups[i]);
return 0;
}
arch_initcall(clk_init);
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