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/*
* gk20a clock scaling profile
*
* Copyright (c) 2013-2016, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GK20A_SCALE_H
#define GK20A_SCALE_H
#include <linux/devfreq.h>
struct clk;
struct gk20a_scale_profile {
struct device *dev;
ktime_t last_event_time;
struct devfreq_dev_profile devfreq_profile;
struct devfreq_dev_status dev_stat;
struct notifier_block qos_notify_block;
unsigned long qos_min_freq;
unsigned long qos_max_freq;
void *private_data;
};
/* Initialization and de-initialization for module */
void gk20a_scale_init(struct device *);
void gk20a_scale_exit(struct device *);
void gk20a_scale_hw_init(struct device *dev);
#if defined(CONFIG_GK20A_DEVFREQ)
/*
* call when performing submit to notify scaling mechanism that the module is
* in use
*/
void gk20a_scale_notify_busy(struct device *);
void gk20a_scale_notify_idle(struct device *);
void gk20a_scale_suspend(struct device *);
void gk20a_scale_resume(struct device *);
int gk20a_scale_qos_notify(struct notifier_block *nb,
unsigned long n, void *p);
#else
static inline void gk20a_scale_notify_busy(struct device *dev) {}
static inline void gk20a_scale_notify_idle(struct device *dev) {}
static inline void gk20a_scale_suspend(struct device *dev) {}
static inline void gk20a_scale_resume(struct device *dev) {}
static inline int gk20a_scale_qos_notify(struct notifier_block *nb,
unsigned long n, void *p)
{
return -ENOSYS;
}
#endif
#endif
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