Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Andrew Murray |
236 |
92.91% |
1 |
20.00% |
| Paul Mundt |
11 |
4.33% |
2 |
40.00% |
| Magnus Damm |
5 |
1.97% |
1 |
20.00% |
| Kuninori Morimoto |
2 |
0.79% |
1 |
20.00% |
| Total |
254 |
|
5 |
|
// 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 & 0x0300) >> 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 & 0x0007;
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 & 0x0030) >> 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];
}