drivers/clk/tegra/clk-dfll.h

   1 /*
   2  * clk-dfll.h - prototypes and macros for the Tegra DFLL clocksource driver
   3  * Copyright (C) 2013 NVIDIA Corporation.  All rights reserved.
   4  *
   5  * Aleksandr Frid <afrid@nvidia.com>
   6  * Paul Walmsley <pwalmsley@nvidia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  */
  17
  18 #ifndef __DRIVERS_CLK_TEGRA_CLK_DFLL_H
  19 #define __DRIVERS_CLK_TEGRA_CLK_DFLL_H
  20
  21 #include <linux/platform_device.h>
  22 #include <linux/reset.h>
  23 #include <linux/types.h>
  24
  25 /**
  26  * struct tegra_dfll_soc_data - SoC-specific hooks/integration for the DFLL driver
  27  * @dev: struct device * that holds the OPP table for the DFLL
  28  * @max_freq: maximum frequency supported on this SoC
  29  * @cvb: CPU frequency table for this SoC
  30  * @init_clock_trimmers: callback to initialize clock trimmers
  31  * @set_clock_trimmers_high: callback to tune clock trimmers for high voltage
  32  * @set_clock_trimmers_low: callback to tune clock trimmers for low voltage
  33  */
  34 struct tegra_dfll_soc_data {
  35         struct device *dev;
  36         unsigned long max_freq;
  37         const struct cvb_table *cvb;
  38
  39         void (*init_clock_trimmers)(void);
  40         void (*set_clock_trimmers_high)(void);
  41         void (*set_clock_trimmers_low)(void);
  42 };
  43
  44 int tegra_dfll_register(struct platform_device *pdev,
  45                         struct tegra_dfll_soc_data *soc);
  46 struct tegra_dfll_soc_data *tegra_dfll_unregister(struct platform_device *pdev);
  47 int tegra_dfll_runtime_suspend(struct device *dev);
  48 int tegra_dfll_runtime_resume(struct device *dev);
  49
  50 #endif /* __DRIVERS_CLK_TEGRA_CLK_DFLL_H */