drivers/gpu/arm/mali400/mali/platform/rk30/mali_dvfs.h

   1 /*
   2  * Rockchip SoC Mali-450 DVFS driver
   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 #include <linux/workqueue.h>
   9 #include <linux/types.h>
  10 #include <linux/device.h>
  11
  12 #ifndef _MALI_DVFS_H_
  13 #define _MALI_DVFS_H_
  14
  15
  16 /**
  17  * mali_dvfs_context_t, context of mali_dvfs_facility.
  18  */
  19 struct mali_dvfs {
  20         /**
  21          * work_to_handle_mali_utilization_event.
  22          */
  23         struct work_struct work;
  24         /**
  25          * current_mali_utilization.
  26          */
  27         unsigned int utilisation;
  28         /**
  29          * index_of_current_dvfs_level.
  30          * current_dvfs_level 在 available_dvfs_level_list 中的 index.
  31          */
  32         unsigned int current_level;
  33
  34         /**
  35          * mali_dvfs_facility 是否被使能.
  36          */
  37         bool enabled;
  38
  39         /**
  40          * count_of_continuous_requests_to_jump_up_in_dvfs_level_table.
  41          * 对 "连续" 的 requests_to_jump_up_in_dvfs_level_table 计数.
  42          */
  43         unsigned int m_count_of_requests_to_jump_up;
  44
  45         /**
  46          * count_of_continuous_requests_to_jump_down_in_dvfs_level_table.
  47          * 对 "连续" 的 requests_to_jump_down_in_dvfs_level_table 计数.
  48          */
  49         unsigned int m_count_of_requests_to_jump_down;
  50 };
  51
  52 int mali_dvfs_init(struct device *dev);
  53
  54 void mali_dvfs_term(struct device *dev);
  55
  56 bool mali_dvfs_is_enabled(struct device *dev);
  57
  58 void mali_dvfs_enable(struct device *dev);
  59
  60 void mali_dvfs_disable(struct device *dev);
  61
  62 unsigned int mali_dvfs_utilisation(struct device *dev);
  63
  64 int mali_dvfs_event(struct device *dev, u32 utilisation);
  65
  66 #endif          /*_MALI_DVFS_H_*/