LXR linux/drivers/devfreq/exynos/exynos

   1/*
   2 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
   3 *              http://www.samsung.com/
   4 *
   5 * EXYNOS PPMU header
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10*/
  11
  12#ifndef __DEVFREQ_EXYNOS_PPMU_H
  13#define __DEVFREQ_EXYNOS_PPMU_H __FILE__
  14
  15#include <linux/ktime.h>
  16
  17/* For PPMU Control */
  18#define PPMU_ENABLE             BIT(0)
  19#define PPMU_DISABLE            0x0
  20#define PPMU_CYCLE_RESET        BIT(1)
  21#define PPMU_COUNTER_RESET      BIT(2)
  22
  23#define PPMU_ENABLE_COUNT0      BIT(0)
  24#define PPMU_ENABLE_COUNT1      BIT(1)
  25#define PPMU_ENABLE_COUNT2      BIT(2)
  26#define PPMU_ENABLE_COUNT3      BIT(3)
  27#define PPMU_ENABLE_CYCLE       BIT(31)
  28
  29#define PPMU_CNTENS             0x10
  30#define PPMU_FLAG               0x50
  31#define PPMU_CCNT_OVERFLOW      BIT(31)
  32#define PPMU_CCNT               0x100
  33
  34#define PPMU_PMCNT0             0x110
  35#define PPMU_PMCNT_OFFSET       0x10
  36#define PMCNT_OFFSET(x)         (PPMU_PMCNT0 + (PPMU_PMCNT_OFFSET * x))
  37
  38#define PPMU_BEVT0SEL           0x1000
  39#define PPMU_BEVTSEL_OFFSET     0x100
  40#define PPMU_BEVTSEL(x)         (PPMU_BEVT0SEL + (ch * PPMU_BEVTSEL_OFFSET))
  41
  42/* For Event Selection */
  43#define RD_DATA_COUNT           0x5
  44#define WR_DATA_COUNT           0x6
  45#define RDWR_DATA_COUNT         0x7
  46
  47enum ppmu_counter {
  48        PPMU_PMNCNT0,
  49        PPMU_PMCCNT1,
  50        PPMU_PMNCNT2,
  51        PPMU_PMNCNT3,
  52        PPMU_PMNCNT_MAX,
  53};
  54
  55struct bus_opp_table {
  56        unsigned int idx;
  57        unsigned long clk;
  58        unsigned long volt;
  59};
  60
  61struct exynos_ppmu {
  62        void __iomem *hw_base;
  63        unsigned int ccnt;
  64        unsigned int event[PPMU_PMNCNT_MAX];
  65        unsigned int count[PPMU_PMNCNT_MAX];
  66        unsigned long long ns;
  67        ktime_t reset_time;
  68        bool ccnt_overflow;
  69        bool count_overflow[PPMU_PMNCNT_MAX];
  70};
  71
  72void exynos_ppmu_reset(void __iomem *ppmu_base);
  73void exynos_ppmu_setevent(void __iomem *ppmu_base, unsigned int ch,
  74                        unsigned int evt);
  75void exynos_ppmu_start(void __iomem *ppmu_base);
  76void exynos_ppmu_stop(void __iomem *ppmu_base);
  77unsigned int exynos_ppmu_read(void __iomem *ppmu_base, unsigned int ch);
  78#endif /* __DEVFREQ_EXYNOS_PPMU_H */
  79