Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Yoshinori Sato |
222 |
74.75% |
1 |
12.50% |
| Paul Mundt |
65 |
21.89% |
4 |
50.00% |
| Magnus Damm |
6 |
2.02% |
1 |
12.50% |
| Tobias Klauser |
2 |
0.67% |
1 |
12.50% |
| Kuninori Morimoto |
2 |
0.67% |
1 |
12.50% |
| Total |
297 |
|
8 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* arch/sh/kernel/cpu/sh2/clock-sh7619.c
*
* SH7619 support for the clock framework
*
* Copyright (C) 2006 Yoshinori Sato
*
* Based on clock-sh4.c
* Copyright (C) 2005 Paul Mundt
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <asm/clock.h>
#include <asm/freq.h>
#include <asm/processor.h>
static const int pll1rate[] = {1,2};
static const int pfc_divisors[] = {1,2,0,4};
static unsigned int pll2_mult;
static void master_clk_init(struct clk *clk)
{
clk->rate *= pll2_mult * pll1rate[(__raw_readw(FREQCR) >> 8) & 7];
}
static struct sh_clk_ops sh7619_master_clk_ops = {
.init = master_clk_init,
};
static unsigned long module_clk_recalc(struct clk *clk)
{
int idx = (__raw_readw(FREQCR) & 0x0007);
return clk->parent->rate / pfc_divisors[idx];
}
static struct sh_clk_ops sh7619_module_clk_ops = {
.recalc = module_clk_recalc,
};
static unsigned long bus_clk_recalc(struct clk *clk)
{
return clk->parent->rate / pll1rate[(__raw_readw(FREQCR) >> 8) & 7];
}
static struct sh_clk_ops sh7619_bus_clk_ops = {
.recalc = bus_clk_recalc,
};
static struct sh_clk_ops sh7619_cpu_clk_ops = {
.recalc = followparent_recalc,
};
static struct sh_clk_ops *sh7619_clk_ops[] = {
&sh7619_master_clk_ops,
&sh7619_module_clk_ops,
&sh7619_bus_clk_ops,
&sh7619_cpu_clk_ops,
};
void __init arch_init_clk_ops(struct sh_clk_ops **ops, int idx)
{
if (test_mode_pin(MODE_PIN2 | MODE_PIN0) ||
test_mode_pin(MODE_PIN2 | MODE_PIN1))
pll2_mult = 2;
else if (test_mode_pin(MODE_PIN0) || test_mode_pin(MODE_PIN1))
pll2_mult = 4;
BUG_ON(!pll2_mult);
if (idx < ARRAY_SIZE(sh7619_clk_ops))
*ops = sh7619_clk_ops[idx];
}