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GuEe-GUI
e280f213bf
1. Support DVFS and finsh cmd, there are 6 governors: - conservative - freedom - performance - powersave - schedutil 2. Support DVFS for SCMI. 3. Port the Cooling device for DVFS. 4. Port the PM with DVFS. Signed-off-by: GuEe-GUI <2991707448@qq.com>
108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-11-21 GuEe-GUI first version
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <rtdevice.h>
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#define DBG_TAG "dvfs.pm"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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rt_err_t rt_dvfs_scaling_pm_suspend(struct rt_device_pm *device_pm, rt_uint8_t mode)
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{
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struct rt_dvfs_scaling *dvfs = device_pm->device->dvfs_scaling;
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if (!dvfs)
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{
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return RT_EOK;
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}
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return rt_dvfs_scaling_suspend(dvfs);
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}
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rt_err_t rt_dvfs_scaling_pm_resume(struct rt_device_pm *device_pm, rt_uint8_t mode)
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{
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struct rt_dvfs_scaling *dvfs = device_pm->device->dvfs_scaling;
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if (!dvfs)
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{
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return RT_EOK;
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}
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return rt_dvfs_scaling_resume(dvfs);
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}
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rt_err_t rt_dvfs_scaling_pm_frequency_change(struct rt_device_pm *device_pm, rt_uint8_t mode)
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{
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rt_uint32_t governor_type = RT_DVFS_GOVERNOR_TYPE_ONDEMAND;
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struct rt_dvfs_scaling *dvfs = device_pm->device->dvfs_scaling;
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if (!dvfs)
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{
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return RT_EOK;
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}
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rt_dvfs_scaling_enter(dvfs);
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if (dvfs->gov)
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{
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governor_type = dvfs->gov->type;
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}
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rt_dvfs_scaling_leave(dvfs);
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if (governor_type == RT_DVFS_GOVERNOR_TYPE_FREEDOM)
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{
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switch (mode)
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{
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case PM_RUN_MODE_HIGH_SPEED:
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return rt_dvfs_scaling_set_frequency(dvfs, dvfs->max_freq);
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case PM_RUN_MODE_NORMAL_SPEED:
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/*
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* It's not a good idea, but the OPP doesn't seem to have defaults.
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*/
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return rt_dvfs_scaling_set_frequency(dvfs, (dvfs->max_freq + dvfs->min_freq) / 2);
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case PM_RUN_MODE_MEDIUM_SPEED:
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return rt_dvfs_scaling_set_frequency(dvfs, dvfs->suspend_freq);
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case PM_RUN_MODE_LOW_SPEED:
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return rt_dvfs_scaling_set_frequency(dvfs, dvfs->min_freq);
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default:
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break;
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}
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}
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else
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{
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switch (mode)
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{
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case PM_RUN_MODE_HIGH_SPEED:
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return rt_dvfs_scaling_set_governor(dvfs, RT_DVFS_GOVERNOR_TYPE_PERFORMANCE);
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case PM_RUN_MODE_NORMAL_SPEED:
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return rt_dvfs_scaling_set_governor(dvfs, RT_DVFS_GOVERNOR_TYPE_ONDEMAND);
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case PM_RUN_MODE_MEDIUM_SPEED:
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return rt_dvfs_scaling_set_governor(dvfs, RT_DVFS_GOVERNOR_TYPE_CONSERVATIVE);
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case PM_RUN_MODE_LOW_SPEED:
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return rt_dvfs_scaling_set_governor(dvfs, RT_DVFS_GOVERNOR_TYPE_POWERSAVE);
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default:
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break;
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}
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}
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return -RT_EINVAL;
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}
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