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/*
* Copyright (C) 2012 Texas Instruments, Inc
*
* 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.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/thermal_framework.h>
static int cool_device(struct thermal_dev *dev, int cooling_level);
static struct cool_data {
int freq_cnt;
unsigned long *freq_list;
} cd;
static struct thermal_dev_ops cool_dev_ops = {
.cool_device = cool_device,
};
static struct thermal_dev cool_dev = {
.name = "gpu_cooling.0",
.domain_name = "gpu",
.dev_ops = &cool_dev_ops,
};
static struct thermal_dev case_cool_dev = {
.name = "gpu_cooling.1",
.domain_name = "case",
.dev_ops = &cool_dev_ops,
};
static unsigned int gpu_cooling_level;
#if defined(CONFIG_CASE_TEMP_GOVERNOR)
static unsigned int case_cooling_level;
#endif
int cool_init(void)
{
int ret;
cd.freq_cnt = sgxfreq_get_freq_list(&cd.freq_list);
if (!cd.freq_cnt || !cd.freq_list)
return -EINVAL;
ret = thermal_cooling_dev_register(&cool_dev);
if (ret)
return ret;
return thermal_cooling_dev_register(&case_cool_dev);
}
void cool_deinit(void)
{
thermal_cooling_dev_unregister(&cool_dev);
thermal_cooling_dev_unregister(&case_cool_dev);
}
static int cool_device(struct thermal_dev *dev, int cooling_level)
{
int freq_max_index, freq_limit_index;
#if defined(CONFIG_CASE_TEMP_GOVERNOR)
if (!strcmp(dev->domain_name, "case"))
{
int tmp = 0;
tmp = cooling_level - case_subzone_number;
if (tmp < 0)
tmp = 0;
case_cooling_level = tmp;
}
else
#endif
{
gpu_cooling_level = cooling_level;
}
freq_max_index = cd.freq_cnt - 1;
#if defined(CONFIG_CASE_TEMP_GOVERNOR)
if (case_cooling_level > gpu_cooling_level)
{
freq_limit_index = freq_max_index - case_cooling_level;
}
else
#endif
{
freq_limit_index = freq_max_index - gpu_cooling_level;
}
if (freq_limit_index < 0)
freq_limit_index = 0;
sgxfreq_set_freq_limit(cd.freq_list[freq_limit_index]);
return 0;
}
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