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/*
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* EXYNOS - PPMU support
*
* 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/kernel.h>
#include <linux/types.h>
#include <linux/io.h>
#include "exynos_ppmu.h"
void exynos_ppmu_reset(void __iomem *ppmu_base)
{
__raw_writel(PPMU_CYCLE_RESET | PPMU_COUNTER_RESET, ppmu_base);
__raw_writel(PPMU_ENABLE_CYCLE |
PPMU_ENABLE_COUNT0 |
PPMU_ENABLE_COUNT1 |
PPMU_ENABLE_COUNT2 |
PPMU_ENABLE_COUNT3,
ppmu_base + PPMU_CNTENS);
}
void exynos_ppmu_setevent(void __iomem *ppmu_base, unsigned int ch,
unsigned int evt)
{
__raw_writel(evt, ppmu_base + PPMU_BEVTSEL(ch));
}
void exynos_ppmu_start(void __iomem *ppmu_base)
{
__raw_writel(PPMU_ENABLE, ppmu_base);
}
void exynos_ppmu_stop(void __iomem *ppmu_base)
{
__raw_writel(PPMU_DISABLE, ppmu_base);
}
unsigned int exynos_ppmu_read(void __iomem *ppmu_base, unsigned int ch)
{
unsigned int total;
if (ch == PPMU_PMNCNT3)
total = ((__raw_readl(ppmu_base + PMCNT_OFFSET(ch)) << 8) |
__raw_readl(ppmu_base + PMCNT_OFFSET(ch + 1)));
else
total = __raw_readl(ppmu_base + PMCNT_OFFSET(ch));
return total;
}
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