// SPDX-License-Identifier: GPL-2.0
/*
* arch / sh / kernel / cpu / sh3 / clock - sh7712 . c
*
* SH7712 support for the clock framework
*
* Copyright ( C ) 2007 Andrew Murray < amurray @ mpc - data . co . uk >
*
* Based on arch / sh / kernel / cpu / sh3 / clock - sh3 . c
* Copyright ( C ) 2005 Paul Mundt
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <asm /clock.h>
#include <asm /freq.h>
#include <asm /io.h>
static int multipliers[] = { 1 , 2 , 3 };
static int divisors[] = { 1 , 2 , 3 , 4 , 6 };
static void master_clk_init(struct clk *clk)
{
int frqcr = __raw_readw(FRQCR);
int idx = (frqcr & 0 x0300) >> 8 ;
clk->rate *= multipliers[idx];
}
static struct sh_clk_ops sh7712_master_clk_ops = {
.init = master_clk_init,
};
static unsigned long module_clk_recalc(struct clk *clk)
{
int frqcr = __raw_readw(FRQCR);
int idx = frqcr & 0 x0007;
return clk->parent->rate / divisors[idx];
}
static struct sh_clk_ops sh7712_module_clk_ops = {
.recalc = module_clk_recalc,
};
static unsigned long cpu_clk_recalc(struct clk *clk)
{
int frqcr = __raw_readw(FRQCR);
int idx = (frqcr & 0 x0030) >> 4 ;
return clk->parent->rate / divisors[idx];
}
static struct sh_clk_ops sh7712_cpu_clk_ops = {
.recalc = cpu_clk_recalc,
};
static struct sh_clk_ops *sh7712_clk_ops[] = {
&sh7712_master_clk_ops,
&sh7712_module_clk_ops,
&sh7712_cpu_clk_ops,
};
void __init arch_init_clk_ops(struct sh_clk_ops **ops, int idx)
{
if (idx < ARRAY_SIZE(sh7712_clk_ops))
*ops = sh7712_clk_ops[idx];
}
Messung V0.5 in Prozent C=98 H=85 G=91
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-01)
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