diff options
Diffstat (limited to 'pvr-source/services4/system/omap4/sgxfreq_cool.c')
-rw-r--r-- | pvr-source/services4/system/omap4/sgxfreq_cool.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/pvr-source/services4/system/omap4/sgxfreq_cool.c b/pvr-source/services4/system/omap4/sgxfreq_cool.c new file mode 100644 index 0000000..9233def --- /dev/null +++ b/pvr-source/services4/system/omap4/sgxfreq_cool.c @@ -0,0 +1,104 @@ +/* + * 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; +} |