clk-dfll.h
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/*
* clk-dfll.h - prototypes and macros for the Tegra DFLL clocksource driver
* Copyright (C) 2013 NVIDIA Corporation. All rights reserved.
*
* Aleksandr Frid <afrid@nvidia.com>
* Paul Walmsley <pwalmsley@nvidia.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#ifndef __DRIVERS_CLK_TEGRA_CLK_DFLL_H
#define __DRIVERS_CLK_TEGRA_CLK_DFLL_H
#include <linux/platform_device.h>
#include <linux/reset.h>
#include <linux/types.h>
/**
* struct tegra_dfll_soc_data - SoC-specific hooks/integration for the DFLL driver
* @opp_dev: struct device * that holds the OPP table for the DFLL
* @min_millivolts: minimum voltage (in mV) that the DFLL can operate
* @tune0_low: DFLL tuning register 0 (low voltage range)
* @tune0_high: DFLL tuning register 0 (high voltage range)
* @tune1: DFLL tuning register 1
* @assert_dvco_reset: fn ptr to place the DVCO in reset
* @deassert_dvco_reset: fn ptr to release the DVCO reset
* @set_clock_trimmers_high: fn ptr to tune clock trimmers for high voltage
* @set_clock_trimmers_low: fn ptr to tune clock trimmers for low voltage
*/
struct tegra_dfll_soc_data {
struct device *dev;
unsigned int min_millivolts;
u32 tune0_low;
u32 tune0_high;
u32 tune1;
void (*init_clock_trimmers)(void);
void (*set_clock_trimmers_high)(void);
void (*set_clock_trimmers_low)(void);
};
int tegra_dfll_register(struct platform_device *pdev,
struct tegra_dfll_soc_data *soc);
int tegra_dfll_unregister(struct platform_device *pdev);
int tegra_dfll_runtime_suspend(struct device *dev);
int tegra_dfll_runtime_resume(struct device *dev);
#endif /* __DRIVERS_CLK_TEGRA_CLK_DFLL_H */