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sh: shared mstp32 clock code

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Add shared 32-bit module stop bit clock support.

Processor specific code can use SH_CLK_MSTP32()
to initialize module stop bit clocks, and then
use sh_clk_mstp32() for registration.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm
2009-05-28 12:52:29 +00:00
committed by Paul Mundt
parent 98fbe45bea
commit 6881e8bf3d
2 changed files with 48 additions and 0 deletions
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35
arch/sh/kernel/cpu/clock-cpg.c
View File

@ -1,7 +1,42 @@
#include <linux/clk.h>
#include <linux/compiler.h>
#include <linux/io.h>
#include <asm/clock.h>
static int sh_clk_mstp32_enable(struct clk *clk)
{
__raw_writel(__raw_readl(clk->enable_reg) & ~(1 << clk->enable_bit),
clk->enable_reg);
return 0;
}
static void sh_clk_mstp32_disable(struct clk *clk)
{
__raw_writel(__raw_readl(clk->enable_reg) | (1 << clk->enable_bit),
clk->enable_reg);
}
static struct clk_ops sh_clk_mstp32_clk_ops = {
.enable = sh_clk_mstp32_enable,
.disable = sh_clk_mstp32_disable,
.recalc = followparent_recalc,
};
int __init sh_clk_mstp32_register(struct clk *clks, int nr)
{
struct clk *clkp;
int ret = 0;
int k;
for (k = 0; !ret && (k < nr); k++) {
clkp = clks + k;
clkp->ops = &sh_clk_mstp32_clk_ops;
ret |= clk_register(clkp);
}
return ret;
}
#ifdef CONFIG_SH_CLK_CPG_LEGACY
static struct clk master_clk = {
.name = "master_clk",