Release 4.11 arch/arm/mach-mmp/clock.c
/*
* linux/arch/arm/mach-mmp/clock.c
*
* 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/spinlock.h>
#include <linux/clk.h>
#include <linux/io.h>
#include "regs-apbc.h"
#include "clock.h"
static void apbc_clk_enable(struct clk *clk)
{
uint32_t clk_rst;
clk_rst = APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(clk->fnclksel);
__raw_writel(clk_rst, clk->clk_rst);
}
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static void apbc_clk_disable(struct clk *clk)
{
__raw_writel(0, clk->clk_rst);
}
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struct clkops apbc_clk_ops = {
.enable = apbc_clk_enable,
.disable = apbc_clk_disable,
};
static void apmu_clk_enable(struct clk *clk)
{
__raw_writel(clk->enable_val, clk->clk_rst);
}
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static void apmu_clk_disable(struct clk *clk)
{
__raw_writel(0, clk->clk_rst);
}
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struct clkops apmu_clk_ops = {
.enable = apmu_clk_enable,
.disable = apmu_clk_disable,
};
static DEFINE_SPINLOCK(clocks_lock);
int clk_enable(struct clk *clk)
{
unsigned long flags;
spin_lock_irqsave(&clocks_lock, flags);
if (clk->enabled++ == 0)
clk->ops->enable(clk);
spin_unlock_irqrestore(&clocks_lock, flags);
return 0;
}
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EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
unsigned long flags;
WARN_ON(clk->enabled == 0);
spin_lock_irqsave(&clocks_lock, flags);
if (--clk->enabled == 0)
clk->ops->disable(clk);
spin_unlock_irqrestore(&clocks_lock, flags);
}
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EXPORT_SYMBOL(clk_disable);
unsigned long clk_get_rate(struct clk *clk)
{
unsigned long rate;
if (clk->ops->getrate)
rate = clk->ops->getrate(clk);
else
rate = clk->rate;
return rate;
}
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EXPORT_SYMBOL(clk_get_rate);
int clk_set_rate(struct clk *clk, unsigned long rate)
{
unsigned long flags;
int ret = -EINVAL;
if (clk->ops->setrate) {
spin_lock_irqsave(&clocks_lock, flags);
ret = clk->ops->setrate(clk, rate);
spin_unlock_irqrestore(&clocks_lock, flags);
}
return ret;
}
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| Total | 66 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL(clk_set_rate);
Overall Contributors
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| Eric Miao | 269 | 67.42% | 1 | 25.00% |
| Haojian Zhuang | 129 | 32.33% | 2 | 50.00% |
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| Total | 399 | 100.00% | 4 | 100.00% |
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