drivers/clk/tegra/cvb.h

   1 /*
   2  * Utility functions for parsing Tegra CVB voltage tables
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  */
  14
  15 #ifndef __DRIVERS_CLK_TEGRA_CVB_H
  16 #define __DRIVERS_CLK_TEGRA_CVB_H
  17
  18 #include <linux/types.h>
  19
  20 struct device;
  21
  22 #define MAX_DVFS_FREQS  40
  23
  24 struct rail_alignment {
  25         int offset_uv;
  26         int step_uv;
  27 };
  28
  29 struct cvb_coefficients {
  30         int c0;
  31         int c1;
  32         int c2;
  33 };
  34
  35 struct cvb_table_freq_entry {
  36         unsigned long freq;
  37         struct cvb_coefficients coefficients;
  38 };
  39
  40 struct cvb_cpu_dfll_data {
  41         u32 tune0_low;
  42         u32 tune0_high;
  43         u32 tune1;
  44 };
  45
  46 struct cvb_table {
  47         int speedo_id;
  48         int process_id;
  49
  50         int min_millivolts;
  51         int max_millivolts;
  52         struct rail_alignment alignment;
  53
  54         int speedo_scale;
  55         int voltage_scale;
  56         struct cvb_table_freq_entry cvb_table[MAX_DVFS_FREQS];
  57         struct cvb_cpu_dfll_data cpu_dfll_data;
  58 };
  59
  60 const struct cvb_table *tegra_cvb_build_opp_table(
  61                 const struct cvb_table *cvb_tables,
  62                 size_t sz, int process_id,
  63                 int speedo_id, int speedo_value,
  64                 unsigned long max_rate,
  65                 struct device *opp_dev);
  66
  67 #endif