linux/drivers/cpufreq/exynos-cpufreq.h
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   1/*
   2 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
   3 *              http://www.samsung.com
   4 *
   5 * EXYNOS - CPUFreq support
   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
  12enum cpufreq_level_index {
  13        L0, L1, L2, L3, L4,
  14        L5, L6, L7, L8, L9,
  15        L10, L11, L12, L13, L14,
  16        L15, L16, L17, L18, L19,
  17        L20,
  18};
  19
  20#define APLL_FREQ(f, a0, a1, a2, a3, a4, a5, a6, a7, b0, b1, b2, m, p, s) \
  21        { \
  22                .freq = (f) * 1000, \
  23                .clk_div_cpu0 = ((a0) | (a1) << 4 | (a2) << 8 | (a3) << 12 | \
  24                        (a4) << 16 | (a5) << 20 | (a6) << 24 | (a7) << 28), \
  25                .clk_div_cpu1 = (b0 << 0 | b1 << 4 | b2 << 8), \
  26                .mps = ((m) << 16 | (p) << 8 | (s)), \
  27        }
  28
  29struct apll_freq {
  30        unsigned int freq;
  31        u32 clk_div_cpu0;
  32        u32 clk_div_cpu1;
  33        u32 mps;
  34};
  35
  36struct exynos_dvfs_info {
  37        unsigned long   mpll_freq_khz;
  38        unsigned int    pll_safe_idx;
  39        struct clk      *cpu_clk;
  40        unsigned int    *volt_table;
  41        struct cpufreq_frequency_table  *freq_table;
  42        void (*set_freq)(unsigned int, unsigned int);
  43        bool (*need_apll_change)(unsigned int, unsigned int);
  44};
  45
  46#ifdef CONFIG_ARM_EXYNOS4210_CPUFREQ
  47extern int exynos4210_cpufreq_init(struct exynos_dvfs_info *);
  48#else
  49static inline int exynos4210_cpufreq_init(struct exynos_dvfs_info *info)
  50{
  51        return -EOPNOTSUPP;
  52}
  53#endif
  54#ifdef CONFIG_ARM_EXYNOS4X12_CPUFREQ
  55extern int exynos4x12_cpufreq_init(struct exynos_dvfs_info *);
  56#else
  57static inline int exynos4x12_cpufreq_init(struct exynos_dvfs_info *info)
  58{
  59        return -EOPNOTSUPP;
  60}
  61#endif
  62#ifdef CONFIG_ARM_EXYNOS5250_CPUFREQ
  63extern int exynos5250_cpufreq_init(struct exynos_dvfs_info *);
  64#else
  65static inline int exynos5250_cpufreq_init(struct exynos_dvfs_info *info)
  66{
  67        return -EOPNOTSUPP;
  68}
  69#endif
  70
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