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/*
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 _CLKMCLK_H_
#define _CLKMCLK_H_
#include <linux/mutex.h>
enum gk20a_mclk_speed {
gk20a_mclk_low_speed,
gk20a_mclk_mid_speed,
gk20a_mclk_high_speed,
};
#define DEFAULT_BOOT_MCLK_SPEED gk20a_mclk_high_speed
#define MCLK_LOW_SPEED_LIMIT 405
#define MCLK_MID_SPEED_LIMIT 810
struct clk_mclk_state {
enum gk20a_mclk_speed speed;
struct mutex mclk_mutex;
void *vreg_buf;
bool init;
/* function pointers */
int (*change)(struct gk20a *g, enum gk20a_mclk_speed speed);
#ifdef CONFIG_DEBUG_FS
s64 switch_max;
s64 switch_min;
u64 switch_num;
s64 switch_avg;
s64 switch_std;
bool debugfs_set;
#endif
};
int clk_mclkseq_init_mclk_gddr5(struct gk20a *g);
int clk_mclkseq_change_mclk_gddr5(struct gk20a *g,
enum gk20a_mclk_speed speed);
#endif
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