drivers/cpufreq/exynos-cpufreq.h

   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
  12 enum 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
  29 struct apll_freq {
  30         unsigned int freq;
  31         u32 clk_div_cpu0;
  32         u32 clk_div_cpu1;
  33         u32 mps;
  34 };
  35
  36 struct 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
  47 extern int exynos4210_cpufreq_init(struct exynos_dvfs_info *);
  48 #else
  49 static inline int exynos4210_cpufreq_init(struct exynos_dvfs_info *info)
  50 {
  51         return -EOPNOTSUPP;
  52 }
  53 #endif
  54 #ifdef CONFIG_ARM_EXYNOS4X12_CPUFREQ
  55 extern int exynos4x12_cpufreq_init(struct exynos_dvfs_info *);
  56 #else
  57 static inline int exynos4x12_cpufreq_init(struct exynos_dvfs_info *info)
  58 {
  59         return -EOPNOTSUPP;
  60 }
  61 #endif
  62 #ifdef CONFIG_ARM_EXYNOS5250_CPUFREQ
  63 extern int exynos5250_cpufreq_init(struct exynos_dvfs_info *);
  64 #else
  65 static inline int exynos5250_cpufreq_init(struct exynos_dvfs_info *info)
  66 {
  67         return -EOPNOTSUPP;
  68 }
  69 #endif